Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1 | /* |
Michael Roth | 42074a9 | 2012-01-19 22:19:27 -0600 | [diff] [blame] | 2 | * QEMU Guest Agent POSIX-specific command implementations |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 3 | * |
| 4 | * Copyright IBM Corp. 2011 |
| 5 | * |
| 6 | * Authors: |
| 7 | * Michael Roth <mdroth@linux.vnet.ibm.com> |
Michal Privoznik | 3424fc9 | 2012-02-29 17:02:23 +0100 | [diff] [blame] | 8 | * Michal Privoznik <mprivozn@redhat.com> |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 9 | * |
| 10 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 11 | * See the COPYING file in the top-level directory. |
| 12 | */ |
| 13 | |
Peter Maydell | 4459bf3 | 2016-01-29 17:49:58 +0000 | [diff] [blame] | 14 | #include "qemu/osdep.h" |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 15 | #include <sys/ioctl.h> |
Luiz Capitulino | 2c02cbf | 2012-05-23 15:48:05 -0300 | [diff] [blame] | 16 | #include <sys/wait.h> |
Tomoki Sekiyama | 46d4c57 | 2014-06-30 17:51:34 -0400 | [diff] [blame] | 17 | #include <dirent.h> |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 18 | #include "qga/guest-agent-core.h" |
| 19 | #include "qga-qmp-commands.h" |
Paolo Bonzini | 7b1b5d1 | 2012-12-17 18:19:43 +0100 | [diff] [blame] | 20 | #include "qapi/qmp/qerror.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 21 | #include "qemu/queue.h" |
| 22 | #include "qemu/host-utils.h" |
Denis V. Lunev | 1250539 | 2015-10-28 18:13:55 +0300 | [diff] [blame] | 23 | #include "qemu/sockets.h" |
Daniel P. Berrange | 920639c | 2015-11-23 15:37:07 +0000 | [diff] [blame] | 24 | #include "qemu/base64.h" |
Veronia Bahaa | f348b6d | 2016-03-20 19:16:19 +0200 | [diff] [blame] | 25 | #include "qemu/cutils.h" |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 26 | |
Tomáš Golembiovský | 05eb057 | 2017-07-17 15:58:33 +0200 | [diff] [blame] | 27 | #ifdef HAVE_UTMPX |
| 28 | #include <utmpx.h> |
| 29 | #endif |
| 30 | |
Luiz Capitulino | 2c02cbf | 2012-05-23 15:48:05 -0300 | [diff] [blame] | 31 | #ifndef CONFIG_HAS_ENVIRON |
Andreas Färber | eecae14 | 2012-05-27 17:02:20 +0200 | [diff] [blame] | 32 | #ifdef __APPLE__ |
| 33 | #include <crt_externs.h> |
| 34 | #define environ (*_NSGetEnviron()) |
| 35 | #else |
Luiz Capitulino | 2c02cbf | 2012-05-23 15:48:05 -0300 | [diff] [blame] | 36 | extern char **environ; |
| 37 | #endif |
Andreas Färber | eecae14 | 2012-05-27 17:02:20 +0200 | [diff] [blame] | 38 | #endif |
Luiz Capitulino | 2c02cbf | 2012-05-23 15:48:05 -0300 | [diff] [blame] | 39 | |
Michael Roth | e72c3f2 | 2012-03-25 13:59:41 -0500 | [diff] [blame] | 40 | #if defined(__linux__) |
| 41 | #include <mntent.h> |
| 42 | #include <linux/fs.h> |
| 43 | #include <ifaddrs.h> |
| 44 | #include <arpa/inet.h> |
| 45 | #include <sys/socket.h> |
| 46 | #include <net/if.h> |
Michael Roth | e72c3f2 | 2012-03-25 13:59:41 -0500 | [diff] [blame] | 47 | |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 48 | #ifdef FIFREEZE |
Michael Roth | e72c3f2 | 2012-03-25 13:59:41 -0500 | [diff] [blame] | 49 | #define CONFIG_FSFREEZE |
| 50 | #endif |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 51 | #ifdef FITRIM |
| 52 | #define CONFIG_FSTRIM |
| 53 | #endif |
Michael Roth | e72c3f2 | 2012-03-25 13:59:41 -0500 | [diff] [blame] | 54 | #endif |
| 55 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 56 | static void ga_wait_child(pid_t pid, int *status, Error **errp) |
Luiz Capitulino | d220a6d | 2012-11-27 11:01:58 -0200 | [diff] [blame] | 57 | { |
| 58 | pid_t rpid; |
| 59 | |
| 60 | *status = 0; |
| 61 | |
| 62 | do { |
| 63 | rpid = waitpid(pid, status, 0); |
| 64 | } while (rpid == -1 && errno == EINTR); |
| 65 | |
| 66 | if (rpid == -1) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 67 | error_setg_errno(errp, errno, "failed to wait for child (pid: %d)", |
| 68 | pid); |
Luiz Capitulino | d220a6d | 2012-11-27 11:01:58 -0200 | [diff] [blame] | 69 | return; |
| 70 | } |
| 71 | |
| 72 | g_assert(rpid == pid); |
| 73 | } |
| 74 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 75 | void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp) |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 76 | { |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 77 | const char *shutdown_flag; |
Luiz Capitulino | d220a6d | 2012-11-27 11:01:58 -0200 | [diff] [blame] | 78 | Error *local_err = NULL; |
| 79 | pid_t pid; |
Luiz Capitulino | 3674838 | 2012-05-14 15:25:20 -0300 | [diff] [blame] | 80 | int status; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 81 | |
| 82 | slog("guest-shutdown called, mode: %s", mode); |
| 83 | if (!has_mode || strcmp(mode, "powerdown") == 0) { |
| 84 | shutdown_flag = "-P"; |
| 85 | } else if (strcmp(mode, "halt") == 0) { |
| 86 | shutdown_flag = "-H"; |
| 87 | } else if (strcmp(mode, "reboot") == 0) { |
| 88 | shutdown_flag = "-r"; |
| 89 | } else { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 90 | error_setg(errp, |
Luiz Capitulino | d220a6d | 2012-11-27 11:01:58 -0200 | [diff] [blame] | 91 | "mode is invalid (valid values are: halt|powerdown|reboot"); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 92 | return; |
| 93 | } |
| 94 | |
Luiz Capitulino | d5dd349 | 2012-05-11 16:19:47 -0300 | [diff] [blame] | 95 | pid = fork(); |
| 96 | if (pid == 0) { |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 97 | /* child, start the shutdown */ |
| 98 | setsid(); |
Luiz Capitulino | 3674838 | 2012-05-14 15:25:20 -0300 | [diff] [blame] | 99 | reopen_fd_to_null(0); |
| 100 | reopen_fd_to_null(1); |
| 101 | reopen_fd_to_null(2); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 102 | |
whitearchey | 485e741 | 2013-11-06 10:54:04 +0900 | [diff] [blame] | 103 | execle("/sbin/shutdown", "shutdown", "-h", shutdown_flag, "+0", |
Luiz Capitulino | 3674838 | 2012-05-14 15:25:20 -0300 | [diff] [blame] | 104 | "hypervisor initiated shutdown", (char*)NULL, environ); |
| 105 | _exit(EXIT_FAILURE); |
Luiz Capitulino | d5dd349 | 2012-05-11 16:19:47 -0300 | [diff] [blame] | 106 | } else if (pid < 0) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 107 | error_setg_errno(errp, errno, "failed to create child process"); |
Luiz Capitulino | d5dd349 | 2012-05-11 16:19:47 -0300 | [diff] [blame] | 108 | return; |
| 109 | } |
| 110 | |
Luiz Capitulino | d220a6d | 2012-11-27 11:01:58 -0200 | [diff] [blame] | 111 | ga_wait_child(pid, &status, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 112 | if (local_err) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 113 | error_propagate(errp, local_err); |
Luiz Capitulino | d220a6d | 2012-11-27 11:01:58 -0200 | [diff] [blame] | 114 | return; |
| 115 | } |
| 116 | |
| 117 | if (!WIFEXITED(status)) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 118 | error_setg(errp, "child process has terminated abnormally"); |
Luiz Capitulino | d220a6d | 2012-11-27 11:01:58 -0200 | [diff] [blame] | 119 | return; |
| 120 | } |
| 121 | |
| 122 | if (WEXITSTATUS(status)) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 123 | error_setg(errp, "child process has failed to shutdown"); |
Luiz Capitulino | d220a6d | 2012-11-27 11:01:58 -0200 | [diff] [blame] | 124 | return; |
| 125 | } |
| 126 | |
Peter Maydell | 085d813 | 2013-03-18 17:20:07 +0000 | [diff] [blame] | 127 | /* succeeded */ |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 128 | } |
| 129 | |
Lei Li | 6912e6a | 2013-03-05 17:39:11 +0800 | [diff] [blame] | 130 | int64_t qmp_guest_get_time(Error **errp) |
| 131 | { |
| 132 | int ret; |
| 133 | qemu_timeval tq; |
Lei Li | 6912e6a | 2013-03-05 17:39:11 +0800 | [diff] [blame] | 134 | |
| 135 | ret = qemu_gettimeofday(&tq); |
| 136 | if (ret < 0) { |
| 137 | error_setg_errno(errp, errno, "Failed to get time"); |
| 138 | return -1; |
| 139 | } |
| 140 | |
Eduardo Habkost | 9be3859 | 2016-06-13 18:57:58 -0300 | [diff] [blame] | 141 | return tq.tv_sec * 1000000000LL + tq.tv_usec * 1000; |
Lei Li | 6912e6a | 2013-03-05 17:39:11 +0800 | [diff] [blame] | 142 | } |
| 143 | |
Michal Privoznik | 2c95892 | 2014-01-31 11:29:51 +0100 | [diff] [blame] | 144 | void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp) |
Lei Li | a1bca57 | 2013-03-05 17:39:12 +0800 | [diff] [blame] | 145 | { |
| 146 | int ret; |
| 147 | int status; |
| 148 | pid_t pid; |
| 149 | Error *local_err = NULL; |
| 150 | struct timeval tv; |
| 151 | |
Michal Privoznik | 2c95892 | 2014-01-31 11:29:51 +0100 | [diff] [blame] | 152 | /* If user has passed a time, validate and set it. */ |
| 153 | if (has_time) { |
Marc-André Lureau | 00d2f37 | 2015-07-05 16:28:58 +0200 | [diff] [blame] | 154 | GDate date = { 0, }; |
| 155 | |
Michal Privoznik | 2c95892 | 2014-01-31 11:29:51 +0100 | [diff] [blame] | 156 | /* year-2038 will overflow in case time_t is 32bit */ |
| 157 | if (time_ns / 1000000000 != (time_t)(time_ns / 1000000000)) { |
| 158 | error_setg(errp, "Time %" PRId64 " is too large", time_ns); |
| 159 | return; |
| 160 | } |
| 161 | |
| 162 | tv.tv_sec = time_ns / 1000000000; |
| 163 | tv.tv_usec = (time_ns % 1000000000) / 1000; |
Marc-André Lureau | 00d2f37 | 2015-07-05 16:28:58 +0200 | [diff] [blame] | 164 | g_date_set_time_t(&date, tv.tv_sec); |
| 165 | if (date.year < 1970 || date.year >= 2070) { |
| 166 | error_setg_errno(errp, errno, "Invalid time"); |
| 167 | return; |
| 168 | } |
Michal Privoznik | 2c95892 | 2014-01-31 11:29:51 +0100 | [diff] [blame] | 169 | |
| 170 | ret = settimeofday(&tv, NULL); |
| 171 | if (ret < 0) { |
| 172 | error_setg_errno(errp, errno, "Failed to set time to guest"); |
| 173 | return; |
| 174 | } |
Lei Li | a1bca57 | 2013-03-05 17:39:12 +0800 | [diff] [blame] | 175 | } |
| 176 | |
Michal Privoznik | 2c95892 | 2014-01-31 11:29:51 +0100 | [diff] [blame] | 177 | /* Now, if user has passed a time to set and the system time is set, we |
| 178 | * just need to synchronize the hardware clock. However, if no time was |
| 179 | * passed, user is requesting the opposite: set the system time from the |
Amos Kong | 1634df5 | 2014-04-04 23:25:02 +0800 | [diff] [blame] | 180 | * hardware clock (RTC). */ |
Lei Li | a1bca57 | 2013-03-05 17:39:12 +0800 | [diff] [blame] | 181 | pid = fork(); |
| 182 | if (pid == 0) { |
| 183 | setsid(); |
| 184 | reopen_fd_to_null(0); |
| 185 | reopen_fd_to_null(1); |
| 186 | reopen_fd_to_null(2); |
| 187 | |
Michal Privoznik | 2c95892 | 2014-01-31 11:29:51 +0100 | [diff] [blame] | 188 | /* Use '/sbin/hwclock -w' to set RTC from the system time, |
| 189 | * or '/sbin/hwclock -s' to set the system time from RTC. */ |
| 190 | execle("/sbin/hwclock", "hwclock", has_time ? "-w" : "-s", |
| 191 | NULL, environ); |
Lei Li | a1bca57 | 2013-03-05 17:39:12 +0800 | [diff] [blame] | 192 | _exit(EXIT_FAILURE); |
| 193 | } else if (pid < 0) { |
| 194 | error_setg_errno(errp, errno, "failed to create child process"); |
| 195 | return; |
| 196 | } |
| 197 | |
| 198 | ga_wait_child(pid, &status, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 199 | if (local_err) { |
Lei Li | a1bca57 | 2013-03-05 17:39:12 +0800 | [diff] [blame] | 200 | error_propagate(errp, local_err); |
| 201 | return; |
| 202 | } |
| 203 | |
| 204 | if (!WIFEXITED(status)) { |
| 205 | error_setg(errp, "child process has terminated abnormally"); |
| 206 | return; |
| 207 | } |
| 208 | |
| 209 | if (WEXITSTATUS(status)) { |
| 210 | error_setg(errp, "hwclock failed to set hardware clock to system time"); |
| 211 | return; |
| 212 | } |
| 213 | } |
| 214 | |
Marc-André Lureau | 895b00f | 2015-11-25 13:59:11 +0100 | [diff] [blame] | 215 | typedef enum { |
| 216 | RW_STATE_NEW, |
| 217 | RW_STATE_READING, |
| 218 | RW_STATE_WRITING, |
| 219 | } RwState; |
| 220 | |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 221 | typedef struct GuestFileHandle { |
| 222 | uint64_t id; |
| 223 | FILE *fh; |
Marc-André Lureau | 895b00f | 2015-11-25 13:59:11 +0100 | [diff] [blame] | 224 | RwState state; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 225 | QTAILQ_ENTRY(GuestFileHandle) next; |
| 226 | } GuestFileHandle; |
| 227 | |
| 228 | static struct { |
| 229 | QTAILQ_HEAD(, GuestFileHandle) filehandles; |
Denis V. Lunev | b4fe97c | 2015-10-13 18:41:19 +0300 | [diff] [blame] | 230 | } guest_file_state = { |
| 231 | .filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles), |
| 232 | }; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 233 | |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 234 | static int64_t guest_file_handle_add(FILE *fh, Error **errp) |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 235 | { |
| 236 | GuestFileHandle *gfh; |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 237 | int64_t handle; |
| 238 | |
| 239 | handle = ga_get_fd_handle(ga_state, errp); |
Markus Armbruster | a903f40 | 2014-05-02 13:26:33 +0200 | [diff] [blame] | 240 | if (handle < 0) { |
| 241 | return -1; |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 242 | } |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 243 | |
Markus Armbruster | f3a0640 | 2015-09-14 13:50:44 +0200 | [diff] [blame] | 244 | gfh = g_new0(GuestFileHandle, 1); |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 245 | gfh->id = handle; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 246 | gfh->fh = fh; |
| 247 | QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next); |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 248 | |
| 249 | return handle; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 250 | } |
| 251 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 252 | static GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp) |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 253 | { |
| 254 | GuestFileHandle *gfh; |
| 255 | |
| 256 | QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) |
| 257 | { |
| 258 | if (gfh->id == id) { |
| 259 | return gfh; |
| 260 | } |
| 261 | } |
| 262 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 263 | error_setg(errp, "handle '%" PRId64 "' has not been found", id); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 264 | return NULL; |
| 265 | } |
| 266 | |
Laszlo Ersek | c689b4f | 2013-04-24 13:13:18 +0200 | [diff] [blame] | 267 | typedef const char * const ccpc; |
| 268 | |
Laszlo Ersek | 8fe6bbc | 2013-05-08 17:31:35 +0200 | [diff] [blame] | 269 | #ifndef O_BINARY |
| 270 | #define O_BINARY 0 |
| 271 | #endif |
| 272 | |
Laszlo Ersek | c689b4f | 2013-04-24 13:13:18 +0200 | [diff] [blame] | 273 | /* http://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html */ |
| 274 | static const struct { |
| 275 | ccpc *forms; |
| 276 | int oflag_base; |
| 277 | } guest_file_open_modes[] = { |
Laszlo Ersek | 8fe6bbc | 2013-05-08 17:31:35 +0200 | [diff] [blame] | 278 | { (ccpc[]){ "r", NULL }, O_RDONLY }, |
| 279 | { (ccpc[]){ "rb", NULL }, O_RDONLY | O_BINARY }, |
| 280 | { (ccpc[]){ "w", NULL }, O_WRONLY | O_CREAT | O_TRUNC }, |
| 281 | { (ccpc[]){ "wb", NULL }, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY }, |
| 282 | { (ccpc[]){ "a", NULL }, O_WRONLY | O_CREAT | O_APPEND }, |
| 283 | { (ccpc[]){ "ab", NULL }, O_WRONLY | O_CREAT | O_APPEND | O_BINARY }, |
| 284 | { (ccpc[]){ "r+", NULL }, O_RDWR }, |
| 285 | { (ccpc[]){ "rb+", "r+b", NULL }, O_RDWR | O_BINARY }, |
| 286 | { (ccpc[]){ "w+", NULL }, O_RDWR | O_CREAT | O_TRUNC }, |
| 287 | { (ccpc[]){ "wb+", "w+b", NULL }, O_RDWR | O_CREAT | O_TRUNC | O_BINARY }, |
| 288 | { (ccpc[]){ "a+", NULL }, O_RDWR | O_CREAT | O_APPEND }, |
| 289 | { (ccpc[]){ "ab+", "a+b", NULL }, O_RDWR | O_CREAT | O_APPEND | O_BINARY } |
Laszlo Ersek | c689b4f | 2013-04-24 13:13:18 +0200 | [diff] [blame] | 290 | }; |
| 291 | |
| 292 | static int |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 293 | find_open_flag(const char *mode_str, Error **errp) |
Laszlo Ersek | c689b4f | 2013-04-24 13:13:18 +0200 | [diff] [blame] | 294 | { |
| 295 | unsigned mode; |
| 296 | |
| 297 | for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) { |
| 298 | ccpc *form; |
| 299 | |
| 300 | form = guest_file_open_modes[mode].forms; |
| 301 | while (*form != NULL && strcmp(*form, mode_str) != 0) { |
| 302 | ++form; |
| 303 | } |
| 304 | if (*form != NULL) { |
| 305 | break; |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | if (mode == ARRAY_SIZE(guest_file_open_modes)) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 310 | error_setg(errp, "invalid file open mode '%s'", mode_str); |
Laszlo Ersek | c689b4f | 2013-04-24 13:13:18 +0200 | [diff] [blame] | 311 | return -1; |
| 312 | } |
| 313 | return guest_file_open_modes[mode].oflag_base | O_NOCTTY | O_NONBLOCK; |
| 314 | } |
| 315 | |
| 316 | #define DEFAULT_NEW_FILE_MODE (S_IRUSR | S_IWUSR | \ |
| 317 | S_IRGRP | S_IWGRP | \ |
| 318 | S_IROTH | S_IWOTH) |
| 319 | |
| 320 | static FILE * |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 321 | safe_open_or_create(const char *path, const char *mode, Error **errp) |
Laszlo Ersek | c689b4f | 2013-04-24 13:13:18 +0200 | [diff] [blame] | 322 | { |
| 323 | Error *local_err = NULL; |
| 324 | int oflag; |
| 325 | |
| 326 | oflag = find_open_flag(mode, &local_err); |
| 327 | if (local_err == NULL) { |
| 328 | int fd; |
| 329 | |
| 330 | /* If the caller wants / allows creation of a new file, we implement it |
| 331 | * with a two step process: open() + (open() / fchmod()). |
| 332 | * |
| 333 | * First we insist on creating the file exclusively as a new file. If |
| 334 | * that succeeds, we're free to set any file-mode bits on it. (The |
| 335 | * motivation is that we want to set those file-mode bits independently |
| 336 | * of the current umask.) |
| 337 | * |
| 338 | * If the exclusive creation fails because the file already exists |
| 339 | * (EEXIST is not possible for any other reason), we just attempt to |
| 340 | * open the file, but in this case we won't be allowed to change the |
| 341 | * file-mode bits on the preexistent file. |
| 342 | * |
| 343 | * The pathname should never disappear between the two open()s in |
| 344 | * practice. If it happens, then someone very likely tried to race us. |
| 345 | * In this case just go ahead and report the ENOENT from the second |
| 346 | * open() to the caller. |
| 347 | * |
| 348 | * If the caller wants to open a preexistent file, then the first |
| 349 | * open() is decisive and its third argument is ignored, and the second |
| 350 | * open() and the fchmod() are never called. |
| 351 | */ |
| 352 | fd = open(path, oflag | ((oflag & O_CREAT) ? O_EXCL : 0), 0); |
| 353 | if (fd == -1 && errno == EEXIST) { |
| 354 | oflag &= ~(unsigned)O_CREAT; |
| 355 | fd = open(path, oflag); |
| 356 | } |
| 357 | |
| 358 | if (fd == -1) { |
| 359 | error_setg_errno(&local_err, errno, "failed to open file '%s' " |
| 360 | "(mode: '%s')", path, mode); |
| 361 | } else { |
| 362 | qemu_set_cloexec(fd); |
| 363 | |
| 364 | if ((oflag & O_CREAT) && fchmod(fd, DEFAULT_NEW_FILE_MODE) == -1) { |
| 365 | error_setg_errno(&local_err, errno, "failed to set permission " |
| 366 | "0%03o on new file '%s' (mode: '%s')", |
| 367 | (unsigned)DEFAULT_NEW_FILE_MODE, path, mode); |
| 368 | } else { |
| 369 | FILE *f; |
| 370 | |
| 371 | f = fdopen(fd, mode); |
| 372 | if (f == NULL) { |
| 373 | error_setg_errno(&local_err, errno, "failed to associate " |
| 374 | "stdio stream with file descriptor %d, " |
| 375 | "file '%s' (mode: '%s')", fd, path, mode); |
| 376 | } else { |
| 377 | return f; |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | close(fd); |
Laszlo Ersek | 2b72001 | 2013-05-08 17:31:36 +0200 | [diff] [blame] | 382 | if (oflag & O_CREAT) { |
| 383 | unlink(path); |
| 384 | } |
Laszlo Ersek | c689b4f | 2013-04-24 13:13:18 +0200 | [diff] [blame] | 385 | } |
| 386 | } |
| 387 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 388 | error_propagate(errp, local_err); |
Laszlo Ersek | c689b4f | 2013-04-24 13:13:18 +0200 | [diff] [blame] | 389 | return NULL; |
| 390 | } |
| 391 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 392 | int64_t qmp_guest_file_open(const char *path, bool has_mode, const char *mode, |
| 393 | Error **errp) |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 394 | { |
| 395 | FILE *fh; |
Laszlo Ersek | c689b4f | 2013-04-24 13:13:18 +0200 | [diff] [blame] | 396 | Error *local_err = NULL; |
Simon Zolin | 85b6f6f | 2015-02-06 20:59:54 +0300 | [diff] [blame] | 397 | int64_t handle; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 398 | |
| 399 | if (!has_mode) { |
| 400 | mode = "r"; |
| 401 | } |
| 402 | slog("guest-file-open called, filepath: %s, mode: %s", path, mode); |
Laszlo Ersek | c689b4f | 2013-04-24 13:13:18 +0200 | [diff] [blame] | 403 | fh = safe_open_or_create(path, mode, &local_err); |
| 404 | if (local_err != NULL) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 405 | error_propagate(errp, local_err); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 406 | return -1; |
| 407 | } |
| 408 | |
| 409 | /* set fd non-blocking to avoid common use cases (like reading from a |
| 410 | * named pipe) from hanging the agent |
| 411 | */ |
Denis V. Lunev | 1250539 | 2015-10-28 18:13:55 +0300 | [diff] [blame] | 412 | qemu_set_nonblock(fileno(fh)); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 413 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 414 | handle = guest_file_handle_add(fh, errp); |
Markus Armbruster | a903f40 | 2014-05-02 13:26:33 +0200 | [diff] [blame] | 415 | if (handle < 0) { |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 416 | fclose(fh); |
| 417 | return -1; |
| 418 | } |
| 419 | |
Stefan Weil | d607a52 | 2013-11-17 19:19:52 +0100 | [diff] [blame] | 420 | slog("guest-file-open, handle: %" PRId64, handle); |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 421 | return handle; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 422 | } |
| 423 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 424 | void qmp_guest_file_close(int64_t handle, Error **errp) |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 425 | { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 426 | GuestFileHandle *gfh = guest_file_handle_find(handle, errp); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 427 | int ret; |
| 428 | |
Stefan Weil | d607a52 | 2013-11-17 19:19:52 +0100 | [diff] [blame] | 429 | slog("guest-file-close called, handle: %" PRId64, handle); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 430 | if (!gfh) { |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 431 | return; |
| 432 | } |
| 433 | |
| 434 | ret = fclose(gfh->fh); |
Luiz Capitulino | 3ac4b7c | 2012-11-27 11:01:56 -0200 | [diff] [blame] | 435 | if (ret == EOF) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 436 | error_setg_errno(errp, errno, "failed to close handle"); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 437 | return; |
| 438 | } |
| 439 | |
| 440 | QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 441 | g_free(gfh); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 442 | } |
| 443 | |
| 444 | struct GuestFileRead *qmp_guest_file_read(int64_t handle, bool has_count, |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 445 | int64_t count, Error **errp) |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 446 | { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 447 | GuestFileHandle *gfh = guest_file_handle_find(handle, errp); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 448 | GuestFileRead *read_data = NULL; |
| 449 | guchar *buf; |
| 450 | FILE *fh; |
| 451 | size_t read_count; |
| 452 | |
| 453 | if (!gfh) { |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 454 | return NULL; |
| 455 | } |
| 456 | |
| 457 | if (!has_count) { |
| 458 | count = QGA_READ_COUNT_DEFAULT; |
| 459 | } else if (count < 0) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 460 | error_setg(errp, "value '%" PRId64 "' is invalid for argument count", |
Luiz Capitulino | db3edb6 | 2012-11-27 11:01:57 -0200 | [diff] [blame] | 461 | count); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 462 | return NULL; |
| 463 | } |
| 464 | |
| 465 | fh = gfh->fh; |
Marc-André Lureau | 895b00f | 2015-11-25 13:59:11 +0100 | [diff] [blame] | 466 | |
| 467 | /* explicitly flush when switching from writing to reading */ |
| 468 | if (gfh->state == RW_STATE_WRITING) { |
| 469 | int ret = fflush(fh); |
| 470 | if (ret == EOF) { |
| 471 | error_setg_errno(errp, errno, "failed to flush file"); |
| 472 | return NULL; |
| 473 | } |
| 474 | gfh->state = RW_STATE_NEW; |
| 475 | } |
| 476 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 477 | buf = g_malloc0(count+1); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 478 | read_count = fread(buf, 1, count, fh); |
| 479 | if (ferror(fh)) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 480 | error_setg_errno(errp, errno, "failed to read file"); |
Stefan Weil | d607a52 | 2013-11-17 19:19:52 +0100 | [diff] [blame] | 481 | slog("guest-file-read failed, handle: %" PRId64, handle); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 482 | } else { |
| 483 | buf[read_count] = 0; |
Markus Armbruster | f3a0640 | 2015-09-14 13:50:44 +0200 | [diff] [blame] | 484 | read_data = g_new0(GuestFileRead, 1); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 485 | read_data->count = read_count; |
| 486 | read_data->eof = feof(fh); |
| 487 | if (read_count) { |
| 488 | read_data->buf_b64 = g_base64_encode(buf, read_count); |
| 489 | } |
Marc-André Lureau | 895b00f | 2015-11-25 13:59:11 +0100 | [diff] [blame] | 490 | gfh->state = RW_STATE_READING; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 491 | } |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 492 | g_free(buf); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 493 | clearerr(fh); |
| 494 | |
| 495 | return read_data; |
| 496 | } |
| 497 | |
| 498 | GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64, |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 499 | bool has_count, int64_t count, |
| 500 | Error **errp) |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 501 | { |
| 502 | GuestFileWrite *write_data = NULL; |
| 503 | guchar *buf; |
| 504 | gsize buf_len; |
| 505 | int write_count; |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 506 | GuestFileHandle *gfh = guest_file_handle_find(handle, errp); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 507 | FILE *fh; |
| 508 | |
| 509 | if (!gfh) { |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 510 | return NULL; |
| 511 | } |
| 512 | |
| 513 | fh = gfh->fh; |
Marc-André Lureau | 895b00f | 2015-11-25 13:59:11 +0100 | [diff] [blame] | 514 | |
| 515 | if (gfh->state == RW_STATE_READING) { |
| 516 | int ret = fseek(fh, 0, SEEK_CUR); |
| 517 | if (ret == -1) { |
| 518 | error_setg_errno(errp, errno, "failed to seek file"); |
| 519 | return NULL; |
| 520 | } |
| 521 | gfh->state = RW_STATE_NEW; |
| 522 | } |
| 523 | |
Daniel P. Berrange | 920639c | 2015-11-23 15:37:07 +0000 | [diff] [blame] | 524 | buf = qbase64_decode(buf_b64, -1, &buf_len, errp); |
| 525 | if (!buf) { |
| 526 | return NULL; |
| 527 | } |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 528 | |
| 529 | if (!has_count) { |
| 530 | count = buf_len; |
| 531 | } else if (count < 0 || count > buf_len) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 532 | error_setg(errp, "value '%" PRId64 "' is invalid for argument count", |
Luiz Capitulino | db3edb6 | 2012-11-27 11:01:57 -0200 | [diff] [blame] | 533 | count); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 534 | g_free(buf); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 535 | return NULL; |
| 536 | } |
| 537 | |
| 538 | write_count = fwrite(buf, 1, count, fh); |
| 539 | if (ferror(fh)) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 540 | error_setg_errno(errp, errno, "failed to write to file"); |
Stefan Weil | d607a52 | 2013-11-17 19:19:52 +0100 | [diff] [blame] | 541 | slog("guest-file-write failed, handle: %" PRId64, handle); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 542 | } else { |
Markus Armbruster | f3a0640 | 2015-09-14 13:50:44 +0200 | [diff] [blame] | 543 | write_data = g_new0(GuestFileWrite, 1); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 544 | write_data->count = write_count; |
| 545 | write_data->eof = feof(fh); |
Marc-André Lureau | 895b00f | 2015-11-25 13:59:11 +0100 | [diff] [blame] | 546 | gfh->state = RW_STATE_WRITING; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 547 | } |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 548 | g_free(buf); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 549 | clearerr(fh); |
| 550 | |
| 551 | return write_data; |
| 552 | } |
| 553 | |
| 554 | struct GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset, |
Eric Blake | 0b4b493 | 2016-02-09 14:27:16 -0700 | [diff] [blame] | 555 | GuestFileWhence *whence_code, |
| 556 | Error **errp) |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 557 | { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 558 | GuestFileHandle *gfh = guest_file_handle_find(handle, errp); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 559 | GuestFileSeek *seek_data = NULL; |
| 560 | FILE *fh; |
| 561 | int ret; |
Eric Blake | 0a982b1 | 2015-11-25 10:37:15 -0700 | [diff] [blame] | 562 | int whence; |
Eric Blake | 0b4b493 | 2016-02-09 14:27:16 -0700 | [diff] [blame] | 563 | Error *err = NULL; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 564 | |
| 565 | if (!gfh) { |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 566 | return NULL; |
| 567 | } |
| 568 | |
Eric Blake | 0a982b1 | 2015-11-25 10:37:15 -0700 | [diff] [blame] | 569 | /* We stupidly exposed 'whence':'int' in our qapi */ |
Eric Blake | 0b4b493 | 2016-02-09 14:27:16 -0700 | [diff] [blame] | 570 | whence = ga_parse_whence(whence_code, &err); |
| 571 | if (err) { |
| 572 | error_propagate(errp, err); |
Eric Blake | 0a982b1 | 2015-11-25 10:37:15 -0700 | [diff] [blame] | 573 | return NULL; |
| 574 | } |
| 575 | |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 576 | fh = gfh->fh; |
| 577 | ret = fseek(fh, offset, whence); |
| 578 | if (ret == -1) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 579 | error_setg_errno(errp, errno, "failed to seek file"); |
Marc-André Lureau | 895b00f | 2015-11-25 13:59:11 +0100 | [diff] [blame] | 580 | if (errno == ESPIPE) { |
| 581 | /* file is non-seekable, stdio shouldn't be buffering anyways */ |
| 582 | gfh->state = RW_STATE_NEW; |
| 583 | } |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 584 | } else { |
Markus Armbruster | 10b7c5d | 2014-02-21 13:36:49 +0100 | [diff] [blame] | 585 | seek_data = g_new0(GuestFileSeek, 1); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 586 | seek_data->position = ftell(fh); |
| 587 | seek_data->eof = feof(fh); |
Marc-André Lureau | 895b00f | 2015-11-25 13:59:11 +0100 | [diff] [blame] | 588 | gfh->state = RW_STATE_NEW; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 589 | } |
| 590 | clearerr(fh); |
| 591 | |
| 592 | return seek_data; |
| 593 | } |
| 594 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 595 | void qmp_guest_file_flush(int64_t handle, Error **errp) |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 596 | { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 597 | GuestFileHandle *gfh = guest_file_handle_find(handle, errp); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 598 | FILE *fh; |
| 599 | int ret; |
| 600 | |
| 601 | if (!gfh) { |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 602 | return; |
| 603 | } |
| 604 | |
| 605 | fh = gfh->fh; |
| 606 | ret = fflush(fh); |
| 607 | if (ret == EOF) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 608 | error_setg_errno(errp, errno, "failed to flush file"); |
Marc-André Lureau | 895b00f | 2015-11-25 13:59:11 +0100 | [diff] [blame] | 609 | } else { |
| 610 | gfh->state = RW_STATE_NEW; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 611 | } |
| 612 | } |
| 613 | |
Michael Roth | e72c3f2 | 2012-03-25 13:59:41 -0500 | [diff] [blame] | 614 | /* linux-specific implementations. avoid this if at all possible. */ |
| 615 | #if defined(__linux__) |
| 616 | |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 617 | #if defined(CONFIG_FSFREEZE) || defined(CONFIG_FSTRIM) |
Paolo Bonzini | af02203 | 2012-06-13 07:41:27 +0200 | [diff] [blame] | 618 | typedef struct FsMount { |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 619 | char *dirname; |
| 620 | char *devtype; |
Tomoki Sekiyama | 46d4c57 | 2014-06-30 17:51:34 -0400 | [diff] [blame] | 621 | unsigned int devmajor, devminor; |
Paolo Bonzini | af02203 | 2012-06-13 07:41:27 +0200 | [diff] [blame] | 622 | QTAILQ_ENTRY(FsMount) next; |
| 623 | } FsMount; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 624 | |
Tomoki Sekiyama | e5d9adb | 2013-10-01 17:09:53 -0400 | [diff] [blame] | 625 | typedef QTAILQ_HEAD(FsMountList, FsMount) FsMountList; |
Michael Roth | 9e8aded43 | 2012-04-16 19:52:17 -0500 | [diff] [blame] | 626 | |
Paolo Bonzini | af02203 | 2012-06-13 07:41:27 +0200 | [diff] [blame] | 627 | static void free_fs_mount_list(FsMountList *mounts) |
Michael Roth | 9e8aded43 | 2012-04-16 19:52:17 -0500 | [diff] [blame] | 628 | { |
Paolo Bonzini | af02203 | 2012-06-13 07:41:27 +0200 | [diff] [blame] | 629 | FsMount *mount, *temp; |
Michael Roth | 9e8aded43 | 2012-04-16 19:52:17 -0500 | [diff] [blame] | 630 | |
| 631 | if (!mounts) { |
| 632 | return; |
| 633 | } |
| 634 | |
| 635 | QTAILQ_FOREACH_SAFE(mount, mounts, next, temp) { |
| 636 | QTAILQ_REMOVE(mounts, mount, next); |
| 637 | g_free(mount->dirname); |
| 638 | g_free(mount->devtype); |
| 639 | g_free(mount); |
| 640 | } |
| 641 | } |
| 642 | |
Tomoki Sekiyama | 46d4c57 | 2014-06-30 17:51:34 -0400 | [diff] [blame] | 643 | static int dev_major_minor(const char *devpath, |
| 644 | unsigned int *devmajor, unsigned int *devminor) |
| 645 | { |
| 646 | struct stat st; |
| 647 | |
| 648 | *devmajor = 0; |
| 649 | *devminor = 0; |
| 650 | |
| 651 | if (stat(devpath, &st) < 0) { |
| 652 | slog("failed to stat device file '%s': %s", devpath, strerror(errno)); |
| 653 | return -1; |
| 654 | } |
| 655 | if (S_ISDIR(st.st_mode)) { |
| 656 | /* It is bind mount */ |
| 657 | return -2; |
| 658 | } |
| 659 | if (S_ISBLK(st.st_mode)) { |
| 660 | *devmajor = major(st.st_rdev); |
| 661 | *devminor = minor(st.st_rdev); |
| 662 | return 0; |
| 663 | } |
| 664 | return -1; |
| 665 | } |
| 666 | |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 667 | /* |
| 668 | * Walk the mount table and build a list of local file systems |
| 669 | */ |
Tomoki Sekiyama | 46d4c57 | 2014-06-30 17:51:34 -0400 | [diff] [blame] | 670 | static void build_fs_mount_list_from_mtab(FsMountList *mounts, Error **errp) |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 671 | { |
| 672 | struct mntent *ment; |
Paolo Bonzini | af02203 | 2012-06-13 07:41:27 +0200 | [diff] [blame] | 673 | FsMount *mount; |
Michael Roth | 9e2fa41 | 2012-05-29 10:08:50 -0500 | [diff] [blame] | 674 | char const *mtab = "/proc/self/mounts"; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 675 | FILE *fp; |
Tomoki Sekiyama | 46d4c57 | 2014-06-30 17:51:34 -0400 | [diff] [blame] | 676 | unsigned int devmajor, devminor; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 677 | |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 678 | fp = setmntent(mtab, "r"); |
| 679 | if (!fp) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 680 | error_setg(errp, "failed to open mtab file: '%s'", mtab); |
Luiz Capitulino | 261551d | 2012-11-29 15:29:11 -0200 | [diff] [blame] | 681 | return; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 682 | } |
| 683 | |
| 684 | while ((ment = getmntent(fp))) { |
| 685 | /* |
| 686 | * An entry which device name doesn't start with a '/' is |
| 687 | * either a dummy file system or a network file system. |
| 688 | * Add special handling for smbfs and cifs as is done by |
| 689 | * coreutils as well. |
| 690 | */ |
| 691 | if ((ment->mnt_fsname[0] != '/') || |
| 692 | (strcmp(ment->mnt_type, "smbfs") == 0) || |
| 693 | (strcmp(ment->mnt_type, "cifs") == 0)) { |
| 694 | continue; |
| 695 | } |
Tomoki Sekiyama | 46d4c57 | 2014-06-30 17:51:34 -0400 | [diff] [blame] | 696 | if (dev_major_minor(ment->mnt_fsname, &devmajor, &devminor) == -2) { |
| 697 | /* Skip bind mounts */ |
| 698 | continue; |
| 699 | } |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 700 | |
Markus Armbruster | f3a0640 | 2015-09-14 13:50:44 +0200 | [diff] [blame] | 701 | mount = g_new0(FsMount, 1); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 702 | mount->dirname = g_strdup(ment->mnt_dir); |
| 703 | mount->devtype = g_strdup(ment->mnt_type); |
Tomoki Sekiyama | 46d4c57 | 2014-06-30 17:51:34 -0400 | [diff] [blame] | 704 | mount->devmajor = devmajor; |
| 705 | mount->devminor = devminor; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 706 | |
Michael Roth | 9e8aded43 | 2012-04-16 19:52:17 -0500 | [diff] [blame] | 707 | QTAILQ_INSERT_TAIL(mounts, mount, next); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 708 | } |
| 709 | |
| 710 | endmntent(fp); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 711 | } |
Tomoki Sekiyama | 46d4c57 | 2014-06-30 17:51:34 -0400 | [diff] [blame] | 712 | |
| 713 | static void decode_mntname(char *name, int len) |
| 714 | { |
| 715 | int i, j = 0; |
| 716 | for (i = 0; i <= len; i++) { |
| 717 | if (name[i] != '\\') { |
| 718 | name[j++] = name[i]; |
| 719 | } else if (name[i + 1] == '\\') { |
| 720 | name[j++] = '\\'; |
| 721 | i++; |
| 722 | } else if (name[i + 1] >= '0' && name[i + 1] <= '3' && |
| 723 | name[i + 2] >= '0' && name[i + 2] <= '7' && |
| 724 | name[i + 3] >= '0' && name[i + 3] <= '7') { |
| 725 | name[j++] = (name[i + 1] - '0') * 64 + |
| 726 | (name[i + 2] - '0') * 8 + |
| 727 | (name[i + 3] - '0'); |
| 728 | i += 3; |
| 729 | } else { |
| 730 | name[j++] = name[i]; |
| 731 | } |
| 732 | } |
| 733 | } |
| 734 | |
| 735 | static void build_fs_mount_list(FsMountList *mounts, Error **errp) |
| 736 | { |
| 737 | FsMount *mount; |
| 738 | char const *mountinfo = "/proc/self/mountinfo"; |
| 739 | FILE *fp; |
| 740 | char *line = NULL, *dash; |
| 741 | size_t n; |
| 742 | char check; |
| 743 | unsigned int devmajor, devminor; |
| 744 | int ret, dir_s, dir_e, type_s, type_e, dev_s, dev_e; |
| 745 | |
| 746 | fp = fopen(mountinfo, "r"); |
| 747 | if (!fp) { |
| 748 | build_fs_mount_list_from_mtab(mounts, errp); |
| 749 | return; |
| 750 | } |
| 751 | |
| 752 | while (getline(&line, &n, fp) != -1) { |
| 753 | ret = sscanf(line, "%*u %*u %u:%u %*s %n%*s%n%c", |
| 754 | &devmajor, &devminor, &dir_s, &dir_e, &check); |
| 755 | if (ret < 3) { |
| 756 | continue; |
| 757 | } |
| 758 | dash = strstr(line + dir_e, " - "); |
| 759 | if (!dash) { |
| 760 | continue; |
| 761 | } |
| 762 | ret = sscanf(dash, " - %n%*s%n %n%*s%n%c", |
| 763 | &type_s, &type_e, &dev_s, &dev_e, &check); |
| 764 | if (ret < 1) { |
| 765 | continue; |
| 766 | } |
| 767 | line[dir_e] = 0; |
| 768 | dash[type_e] = 0; |
| 769 | dash[dev_e] = 0; |
| 770 | decode_mntname(line + dir_s, dir_e - dir_s); |
| 771 | decode_mntname(dash + dev_s, dev_e - dev_s); |
| 772 | if (devmajor == 0) { |
| 773 | /* btrfs reports major number = 0 */ |
| 774 | if (strcmp("btrfs", dash + type_s) != 0 || |
| 775 | dev_major_minor(dash + dev_s, &devmajor, &devminor) < 0) { |
| 776 | continue; |
| 777 | } |
| 778 | } |
| 779 | |
Markus Armbruster | f3a0640 | 2015-09-14 13:50:44 +0200 | [diff] [blame] | 780 | mount = g_new0(FsMount, 1); |
Tomoki Sekiyama | 46d4c57 | 2014-06-30 17:51:34 -0400 | [diff] [blame] | 781 | mount->dirname = g_strdup(line + dir_s); |
| 782 | mount->devtype = g_strdup(dash + type_s); |
| 783 | mount->devmajor = devmajor; |
| 784 | mount->devminor = devminor; |
| 785 | |
| 786 | QTAILQ_INSERT_TAIL(mounts, mount, next); |
| 787 | } |
| 788 | free(line); |
| 789 | |
| 790 | fclose(fp); |
| 791 | } |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 792 | #endif |
| 793 | |
| 794 | #if defined(CONFIG_FSFREEZE) |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 795 | |
Tomoki Sekiyama | 46d4c57 | 2014-06-30 17:51:34 -0400 | [diff] [blame] | 796 | static char *get_pci_driver(char const *syspath, int pathlen, Error **errp) |
| 797 | { |
| 798 | char *path; |
| 799 | char *dpath; |
| 800 | char *driver = NULL; |
| 801 | char buf[PATH_MAX]; |
| 802 | ssize_t len; |
| 803 | |
| 804 | path = g_strndup(syspath, pathlen); |
| 805 | dpath = g_strdup_printf("%s/driver", path); |
| 806 | len = readlink(dpath, buf, sizeof(buf) - 1); |
| 807 | if (len != -1) { |
| 808 | buf[len] = 0; |
| 809 | driver = g_strdup(basename(buf)); |
| 810 | } |
| 811 | g_free(dpath); |
| 812 | g_free(path); |
| 813 | return driver; |
| 814 | } |
| 815 | |
| 816 | static int compare_uint(const void *_a, const void *_b) |
| 817 | { |
| 818 | unsigned int a = *(unsigned int *)_a; |
| 819 | unsigned int b = *(unsigned int *)_b; |
| 820 | |
| 821 | return a < b ? -1 : a > b ? 1 : 0; |
| 822 | } |
| 823 | |
| 824 | /* Walk the specified sysfs and build a sorted list of host or ata numbers */ |
| 825 | static int build_hosts(char const *syspath, char const *host, bool ata, |
| 826 | unsigned int *hosts, int hosts_max, Error **errp) |
| 827 | { |
| 828 | char *path; |
| 829 | DIR *dir; |
| 830 | struct dirent *entry; |
| 831 | int i = 0; |
| 832 | |
| 833 | path = g_strndup(syspath, host - syspath); |
| 834 | dir = opendir(path); |
| 835 | if (!dir) { |
| 836 | error_setg_errno(errp, errno, "opendir(\"%s\")", path); |
| 837 | g_free(path); |
| 838 | return -1; |
| 839 | } |
| 840 | |
| 841 | while (i < hosts_max) { |
| 842 | entry = readdir(dir); |
| 843 | if (!entry) { |
| 844 | break; |
| 845 | } |
| 846 | if (ata && sscanf(entry->d_name, "ata%d", hosts + i) == 1) { |
| 847 | ++i; |
| 848 | } else if (!ata && sscanf(entry->d_name, "host%d", hosts + i) == 1) { |
| 849 | ++i; |
| 850 | } |
| 851 | } |
| 852 | |
| 853 | qsort(hosts, i, sizeof(hosts[0]), compare_uint); |
| 854 | |
| 855 | g_free(path); |
| 856 | closedir(dir); |
| 857 | return i; |
| 858 | } |
| 859 | |
| 860 | /* Store disk device info specified by @sysfs into @fs */ |
| 861 | static void build_guest_fsinfo_for_real_device(char const *syspath, |
| 862 | GuestFilesystemInfo *fs, |
| 863 | Error **errp) |
| 864 | { |
| 865 | unsigned int pci[4], host, hosts[8], tgt[3]; |
| 866 | int i, nhosts = 0, pcilen; |
| 867 | GuestDiskAddress *disk; |
| 868 | GuestPCIAddress *pciaddr; |
| 869 | GuestDiskAddressList *list = NULL; |
| 870 | bool has_ata = false, has_host = false, has_tgt = false; |
| 871 | char *p, *q, *driver = NULL; |
| 872 | |
| 873 | p = strstr(syspath, "/devices/pci"); |
| 874 | if (!p || sscanf(p + 12, "%*x:%*x/%x:%x:%x.%x%n", |
| 875 | pci, pci + 1, pci + 2, pci + 3, &pcilen) < 4) { |
| 876 | g_debug("only pci device is supported: sysfs path \"%s\"", syspath); |
| 877 | return; |
| 878 | } |
| 879 | |
| 880 | driver = get_pci_driver(syspath, (p + 12 + pcilen) - syspath, errp); |
| 881 | if (!driver) { |
| 882 | goto cleanup; |
| 883 | } |
| 884 | |
| 885 | p = strstr(syspath, "/target"); |
| 886 | if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u", |
| 887 | tgt, tgt + 1, tgt + 2) == 3) { |
| 888 | has_tgt = true; |
| 889 | } |
| 890 | |
| 891 | p = strstr(syspath, "/ata"); |
| 892 | if (p) { |
| 893 | q = p + 4; |
| 894 | has_ata = true; |
| 895 | } else { |
| 896 | p = strstr(syspath, "/host"); |
| 897 | q = p + 5; |
| 898 | } |
| 899 | if (p && sscanf(q, "%u", &host) == 1) { |
| 900 | has_host = true; |
| 901 | nhosts = build_hosts(syspath, p, has_ata, hosts, |
| 902 | sizeof(hosts) / sizeof(hosts[0]), errp); |
| 903 | if (nhosts < 0) { |
| 904 | goto cleanup; |
| 905 | } |
| 906 | } |
| 907 | |
| 908 | pciaddr = g_malloc0(sizeof(*pciaddr)); |
| 909 | pciaddr->domain = pci[0]; |
| 910 | pciaddr->bus = pci[1]; |
| 911 | pciaddr->slot = pci[2]; |
| 912 | pciaddr->function = pci[3]; |
| 913 | |
| 914 | disk = g_malloc0(sizeof(*disk)); |
| 915 | disk->pci_controller = pciaddr; |
| 916 | |
| 917 | list = g_malloc0(sizeof(*list)); |
| 918 | list->value = disk; |
| 919 | |
| 920 | if (strcmp(driver, "ata_piix") == 0) { |
| 921 | /* a host per ide bus, target*:0:<unit>:0 */ |
| 922 | if (!has_host || !has_tgt) { |
| 923 | g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); |
| 924 | goto cleanup; |
| 925 | } |
| 926 | for (i = 0; i < nhosts; i++) { |
| 927 | if (host == hosts[i]) { |
| 928 | disk->bus_type = GUEST_DISK_BUS_TYPE_IDE; |
| 929 | disk->bus = i; |
| 930 | disk->unit = tgt[1]; |
| 931 | break; |
| 932 | } |
| 933 | } |
| 934 | if (i >= nhosts) { |
| 935 | g_debug("no host for '%s' (driver '%s')", syspath, driver); |
| 936 | goto cleanup; |
| 937 | } |
| 938 | } else if (strcmp(driver, "sym53c8xx") == 0) { |
| 939 | /* scsi(LSI Logic): target*:0:<unit>:0 */ |
| 940 | if (!has_tgt) { |
| 941 | g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); |
| 942 | goto cleanup; |
| 943 | } |
| 944 | disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; |
| 945 | disk->unit = tgt[1]; |
| 946 | } else if (strcmp(driver, "virtio-pci") == 0) { |
| 947 | if (has_tgt) { |
| 948 | /* virtio-scsi: target*:0:0:<unit> */ |
| 949 | disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; |
| 950 | disk->unit = tgt[2]; |
| 951 | } else { |
| 952 | /* virtio-blk: 1 disk per 1 device */ |
| 953 | disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO; |
| 954 | } |
| 955 | } else if (strcmp(driver, "ahci") == 0) { |
| 956 | /* ahci: 1 host per 1 unit */ |
| 957 | if (!has_host || !has_tgt) { |
| 958 | g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); |
| 959 | goto cleanup; |
| 960 | } |
| 961 | for (i = 0; i < nhosts; i++) { |
| 962 | if (host == hosts[i]) { |
| 963 | disk->unit = i; |
| 964 | disk->bus_type = GUEST_DISK_BUS_TYPE_SATA; |
| 965 | break; |
| 966 | } |
| 967 | } |
| 968 | if (i >= nhosts) { |
| 969 | g_debug("no host for '%s' (driver '%s')", syspath, driver); |
| 970 | goto cleanup; |
| 971 | } |
| 972 | } else { |
| 973 | g_debug("unknown driver '%s' (sysfs path '%s')", driver, syspath); |
| 974 | goto cleanup; |
| 975 | } |
| 976 | |
| 977 | list->next = fs->disk; |
| 978 | fs->disk = list; |
| 979 | g_free(driver); |
| 980 | return; |
| 981 | |
| 982 | cleanup: |
| 983 | if (list) { |
| 984 | qapi_free_GuestDiskAddressList(list); |
| 985 | } |
| 986 | g_free(driver); |
| 987 | } |
| 988 | |
| 989 | static void build_guest_fsinfo_for_device(char const *devpath, |
| 990 | GuestFilesystemInfo *fs, |
| 991 | Error **errp); |
| 992 | |
| 993 | /* Store a list of slave devices of virtual volume specified by @syspath into |
| 994 | * @fs */ |
| 995 | static void build_guest_fsinfo_for_virtual_device(char const *syspath, |
| 996 | GuestFilesystemInfo *fs, |
| 997 | Error **errp) |
| 998 | { |
| 999 | DIR *dir; |
| 1000 | char *dirpath; |
zhanghailiang | e668d1b | 2014-09-19 11:09:10 +0800 | [diff] [blame] | 1001 | struct dirent *entry; |
Tomoki Sekiyama | 46d4c57 | 2014-06-30 17:51:34 -0400 | [diff] [blame] | 1002 | |
| 1003 | dirpath = g_strdup_printf("%s/slaves", syspath); |
| 1004 | dir = opendir(dirpath); |
| 1005 | if (!dir) { |
Michael Roth | 8251a72 | 2017-03-23 15:24:32 -0500 | [diff] [blame] | 1006 | if (errno != ENOENT) { |
| 1007 | error_setg_errno(errp, errno, "opendir(\"%s\")", dirpath); |
| 1008 | } |
Tomoki Sekiyama | 46d4c57 | 2014-06-30 17:51:34 -0400 | [diff] [blame] | 1009 | g_free(dirpath); |
| 1010 | return; |
| 1011 | } |
Tomoki Sekiyama | 46d4c57 | 2014-06-30 17:51:34 -0400 | [diff] [blame] | 1012 | |
| 1013 | for (;;) { |
zhanghailiang | e668d1b | 2014-09-19 11:09:10 +0800 | [diff] [blame] | 1014 | errno = 0; |
| 1015 | entry = readdir(dir); |
| 1016 | if (entry == NULL) { |
| 1017 | if (errno) { |
| 1018 | error_setg_errno(errp, errno, "readdir(\"%s\")", dirpath); |
| 1019 | } |
Tomoki Sekiyama | 46d4c57 | 2014-06-30 17:51:34 -0400 | [diff] [blame] | 1020 | break; |
| 1021 | } |
| 1022 | |
zhanghailiang | e668d1b | 2014-09-19 11:09:10 +0800 | [diff] [blame] | 1023 | if (entry->d_type == DT_LNK) { |
| 1024 | char *path; |
| 1025 | |
| 1026 | g_debug(" slave device '%s'", entry->d_name); |
| 1027 | path = g_strdup_printf("%s/slaves/%s", syspath, entry->d_name); |
| 1028 | build_guest_fsinfo_for_device(path, fs, errp); |
| 1029 | g_free(path); |
Tomoki Sekiyama | 46d4c57 | 2014-06-30 17:51:34 -0400 | [diff] [blame] | 1030 | |
| 1031 | if (*errp) { |
| 1032 | break; |
| 1033 | } |
| 1034 | } |
| 1035 | } |
| 1036 | |
zhanghailiang | e668d1b | 2014-09-19 11:09:10 +0800 | [diff] [blame] | 1037 | g_free(dirpath); |
Tomoki Sekiyama | 46d4c57 | 2014-06-30 17:51:34 -0400 | [diff] [blame] | 1038 | closedir(dir); |
| 1039 | } |
| 1040 | |
| 1041 | /* Dispatch to functions for virtual/real device */ |
| 1042 | static void build_guest_fsinfo_for_device(char const *devpath, |
| 1043 | GuestFilesystemInfo *fs, |
| 1044 | Error **errp) |
| 1045 | { |
| 1046 | char *syspath = realpath(devpath, NULL); |
| 1047 | |
| 1048 | if (!syspath) { |
| 1049 | error_setg_errno(errp, errno, "realpath(\"%s\")", devpath); |
| 1050 | return; |
| 1051 | } |
| 1052 | |
| 1053 | if (!fs->name) { |
| 1054 | fs->name = g_strdup(basename(syspath)); |
| 1055 | } |
| 1056 | |
| 1057 | g_debug(" parse sysfs path '%s'", syspath); |
| 1058 | |
| 1059 | if (strstr(syspath, "/devices/virtual/block/")) { |
| 1060 | build_guest_fsinfo_for_virtual_device(syspath, fs, errp); |
| 1061 | } else { |
| 1062 | build_guest_fsinfo_for_real_device(syspath, fs, errp); |
| 1063 | } |
| 1064 | |
| 1065 | free(syspath); |
| 1066 | } |
| 1067 | |
| 1068 | /* Return a list of the disk device(s)' info which @mount lies on */ |
| 1069 | static GuestFilesystemInfo *build_guest_fsinfo(struct FsMount *mount, |
| 1070 | Error **errp) |
| 1071 | { |
| 1072 | GuestFilesystemInfo *fs = g_malloc0(sizeof(*fs)); |
| 1073 | char *devpath = g_strdup_printf("/sys/dev/block/%u:%u", |
| 1074 | mount->devmajor, mount->devminor); |
| 1075 | |
| 1076 | fs->mountpoint = g_strdup(mount->dirname); |
| 1077 | fs->type = g_strdup(mount->devtype); |
| 1078 | build_guest_fsinfo_for_device(devpath, fs, errp); |
| 1079 | |
| 1080 | g_free(devpath); |
| 1081 | return fs; |
| 1082 | } |
| 1083 | |
| 1084 | GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) |
| 1085 | { |
| 1086 | FsMountList mounts; |
| 1087 | struct FsMount *mount; |
| 1088 | GuestFilesystemInfoList *new, *ret = NULL; |
| 1089 | Error *local_err = NULL; |
| 1090 | |
| 1091 | QTAILQ_INIT(&mounts); |
| 1092 | build_fs_mount_list(&mounts, &local_err); |
| 1093 | if (local_err) { |
| 1094 | error_propagate(errp, local_err); |
| 1095 | return NULL; |
| 1096 | } |
| 1097 | |
| 1098 | QTAILQ_FOREACH(mount, &mounts, next) { |
| 1099 | g_debug("Building guest fsinfo for '%s'", mount->dirname); |
| 1100 | |
| 1101 | new = g_malloc0(sizeof(*ret)); |
| 1102 | new->value = build_guest_fsinfo(mount, &local_err); |
| 1103 | new->next = ret; |
| 1104 | ret = new; |
| 1105 | if (local_err) { |
| 1106 | error_propagate(errp, local_err); |
| 1107 | qapi_free_GuestFilesystemInfoList(ret); |
| 1108 | ret = NULL; |
| 1109 | break; |
| 1110 | } |
| 1111 | } |
| 1112 | |
| 1113 | free_fs_mount_list(&mounts); |
| 1114 | return ret; |
| 1115 | } |
| 1116 | |
| 1117 | |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 1118 | typedef enum { |
| 1119 | FSFREEZE_HOOK_THAW = 0, |
| 1120 | FSFREEZE_HOOK_FREEZE, |
| 1121 | } FsfreezeHookArg; |
| 1122 | |
Stefan Weil | 13a439e | 2014-07-07 21:07:29 +0200 | [diff] [blame] | 1123 | static const char *fsfreeze_hook_arg_string[] = { |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 1124 | "thaw", |
| 1125 | "freeze", |
| 1126 | }; |
| 1127 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1128 | static void execute_fsfreeze_hook(FsfreezeHookArg arg, Error **errp) |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 1129 | { |
| 1130 | int status; |
| 1131 | pid_t pid; |
| 1132 | const char *hook; |
| 1133 | const char *arg_str = fsfreeze_hook_arg_string[arg]; |
| 1134 | Error *local_err = NULL; |
| 1135 | |
| 1136 | hook = ga_fsfreeze_hook(ga_state); |
| 1137 | if (!hook) { |
| 1138 | return; |
| 1139 | } |
| 1140 | if (access(hook, X_OK) != 0) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1141 | error_setg_errno(errp, errno, "can't access fsfreeze hook '%s'", hook); |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 1142 | return; |
| 1143 | } |
| 1144 | |
| 1145 | slog("executing fsfreeze hook with arg '%s'", arg_str); |
| 1146 | pid = fork(); |
| 1147 | if (pid == 0) { |
| 1148 | setsid(); |
| 1149 | reopen_fd_to_null(0); |
| 1150 | reopen_fd_to_null(1); |
| 1151 | reopen_fd_to_null(2); |
| 1152 | |
| 1153 | execle(hook, hook, arg_str, NULL, environ); |
| 1154 | _exit(EXIT_FAILURE); |
| 1155 | } else if (pid < 0) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1156 | error_setg_errno(errp, errno, "failed to create child process"); |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 1157 | return; |
| 1158 | } |
| 1159 | |
| 1160 | ga_wait_child(pid, &status, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1161 | if (local_err) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1162 | error_propagate(errp, local_err); |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 1163 | return; |
| 1164 | } |
| 1165 | |
| 1166 | if (!WIFEXITED(status)) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1167 | error_setg(errp, "fsfreeze hook has terminated abnormally"); |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 1168 | return; |
| 1169 | } |
| 1170 | |
| 1171 | status = WEXITSTATUS(status); |
| 1172 | if (status) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1173 | error_setg(errp, "fsfreeze hook has failed with status %d", status); |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 1174 | return; |
| 1175 | } |
| 1176 | } |
| 1177 | |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1178 | /* |
| 1179 | * Return status of freeze/thaw |
| 1180 | */ |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1181 | GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1182 | { |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 1183 | if (ga_is_frozen(ga_state)) { |
| 1184 | return GUEST_FSFREEZE_STATUS_FROZEN; |
| 1185 | } |
| 1186 | |
| 1187 | return GUEST_FSFREEZE_STATUS_THAWED; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1188 | } |
| 1189 | |
Tomoki Sekiyama | e99bce2 | 2014-06-30 17:51:27 -0400 | [diff] [blame] | 1190 | int64_t qmp_guest_fsfreeze_freeze(Error **errp) |
| 1191 | { |
| 1192 | return qmp_guest_fsfreeze_freeze_list(false, NULL, errp); |
| 1193 | } |
| 1194 | |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1195 | /* |
| 1196 | * Walk list of mounted file systems in the guest, and freeze the ones which |
| 1197 | * are real local file systems. |
| 1198 | */ |
Tomoki Sekiyama | e99bce2 | 2014-06-30 17:51:27 -0400 | [diff] [blame] | 1199 | int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, |
| 1200 | strList *mountpoints, |
| 1201 | Error **errp) |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1202 | { |
| 1203 | int ret = 0, i = 0; |
Tomoki Sekiyama | e99bce2 | 2014-06-30 17:51:27 -0400 | [diff] [blame] | 1204 | strList *list; |
Paolo Bonzini | af02203 | 2012-06-13 07:41:27 +0200 | [diff] [blame] | 1205 | FsMountList mounts; |
| 1206 | struct FsMount *mount; |
Luiz Capitulino | 261551d | 2012-11-29 15:29:11 -0200 | [diff] [blame] | 1207 | Error *local_err = NULL; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1208 | int fd; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1209 | |
| 1210 | slog("guest-fsfreeze called"); |
| 1211 | |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 1212 | execute_fsfreeze_hook(FSFREEZE_HOOK_FREEZE, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1213 | if (local_err) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1214 | error_propagate(errp, local_err); |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 1215 | return -1; |
| 1216 | } |
| 1217 | |
Michael Roth | 9e8aded43 | 2012-04-16 19:52:17 -0500 | [diff] [blame] | 1218 | QTAILQ_INIT(&mounts); |
Luiz Capitulino | 261551d | 2012-11-29 15:29:11 -0200 | [diff] [blame] | 1219 | build_fs_mount_list(&mounts, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1220 | if (local_err) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1221 | error_propagate(errp, local_err); |
Luiz Capitulino | 261551d | 2012-11-29 15:29:11 -0200 | [diff] [blame] | 1222 | return -1; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1223 | } |
| 1224 | |
| 1225 | /* cannot risk guest agent blocking itself on a write in this state */ |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 1226 | ga_set_frozen(ga_state); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1227 | |
Tomoki Sekiyama | e5d9adb | 2013-10-01 17:09:53 -0400 | [diff] [blame] | 1228 | QTAILQ_FOREACH_REVERSE(mount, &mounts, FsMountList, next) { |
Tomoki Sekiyama | e99bce2 | 2014-06-30 17:51:27 -0400 | [diff] [blame] | 1229 | /* To issue fsfreeze in the reverse order of mounts, check if the |
| 1230 | * mount is listed in the list here */ |
| 1231 | if (has_mountpoints) { |
| 1232 | for (list = mountpoints; list; list = list->next) { |
| 1233 | if (strcmp(list->value, mount->dirname) == 0) { |
| 1234 | break; |
| 1235 | } |
| 1236 | } |
| 1237 | if (!list) { |
| 1238 | continue; |
| 1239 | } |
| 1240 | } |
| 1241 | |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1242 | fd = qemu_open(mount->dirname, O_RDONLY); |
| 1243 | if (fd == -1) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1244 | error_setg_errno(errp, errno, "failed to open %s", mount->dirname); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1245 | goto error; |
| 1246 | } |
| 1247 | |
Michael Tokarev | e35916a | 2016-05-18 16:11:55 +0300 | [diff] [blame] | 1248 | /* we try to cull filesystems we know won't work in advance, but other |
| 1249 | * filesystems may not implement fsfreeze for less obvious reasons. |
Michael Roth | 9e8aded43 | 2012-04-16 19:52:17 -0500 | [diff] [blame] | 1250 | * these will report EOPNOTSUPP. we simply ignore these when tallying |
| 1251 | * the number of frozen filesystems. |
Peter Lieven | ce2eb6c | 2017-01-31 16:36:34 +0100 | [diff] [blame] | 1252 | * if a filesystem is mounted more than once (aka bind mount) a |
| 1253 | * consecutive attempt to freeze an already frozen filesystem will |
| 1254 | * return EBUSY. |
Michael Roth | 9e8aded43 | 2012-04-16 19:52:17 -0500 | [diff] [blame] | 1255 | * |
| 1256 | * any other error means a failure to freeze a filesystem we |
| 1257 | * expect to be freezable, so return an error in those cases |
| 1258 | * and return system to thawed state. |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1259 | */ |
| 1260 | ret = ioctl(fd, FIFREEZE); |
Michael Roth | 9e8aded43 | 2012-04-16 19:52:17 -0500 | [diff] [blame] | 1261 | if (ret == -1) { |
Peter Lieven | ce2eb6c | 2017-01-31 16:36:34 +0100 | [diff] [blame] | 1262 | if (errno != EOPNOTSUPP && errno != EBUSY) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1263 | error_setg_errno(errp, errno, "failed to freeze %s", |
Luiz Capitulino | 617fbbc | 2012-11-27 11:02:00 -0200 | [diff] [blame] | 1264 | mount->dirname); |
Michael Roth | 9e8aded43 | 2012-04-16 19:52:17 -0500 | [diff] [blame] | 1265 | close(fd); |
| 1266 | goto error; |
| 1267 | } |
| 1268 | } else { |
| 1269 | i++; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1270 | } |
| 1271 | close(fd); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1272 | } |
| 1273 | |
Paolo Bonzini | af02203 | 2012-06-13 07:41:27 +0200 | [diff] [blame] | 1274 | free_fs_mount_list(&mounts); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1275 | return i; |
| 1276 | |
| 1277 | error: |
Paolo Bonzini | af02203 | 2012-06-13 07:41:27 +0200 | [diff] [blame] | 1278 | free_fs_mount_list(&mounts); |
Michael Roth | 9e8aded43 | 2012-04-16 19:52:17 -0500 | [diff] [blame] | 1279 | qmp_guest_fsfreeze_thaw(NULL); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1280 | return 0; |
| 1281 | } |
| 1282 | |
| 1283 | /* |
| 1284 | * Walk list of frozen file systems in the guest, and thaw them. |
| 1285 | */ |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1286 | int64_t qmp_guest_fsfreeze_thaw(Error **errp) |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1287 | { |
| 1288 | int ret; |
Paolo Bonzini | af02203 | 2012-06-13 07:41:27 +0200 | [diff] [blame] | 1289 | FsMountList mounts; |
| 1290 | FsMount *mount; |
Michael Roth | 9e8aded43 | 2012-04-16 19:52:17 -0500 | [diff] [blame] | 1291 | int fd, i = 0, logged; |
Luiz Capitulino | 261551d | 2012-11-29 15:29:11 -0200 | [diff] [blame] | 1292 | Error *local_err = NULL; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1293 | |
Michael Roth | 9e8aded43 | 2012-04-16 19:52:17 -0500 | [diff] [blame] | 1294 | QTAILQ_INIT(&mounts); |
Luiz Capitulino | 261551d | 2012-11-29 15:29:11 -0200 | [diff] [blame] | 1295 | build_fs_mount_list(&mounts, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1296 | if (local_err) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1297 | error_propagate(errp, local_err); |
Michael Roth | 9e8aded43 | 2012-04-16 19:52:17 -0500 | [diff] [blame] | 1298 | return 0; |
| 1299 | } |
| 1300 | |
| 1301 | QTAILQ_FOREACH(mount, &mounts, next) { |
| 1302 | logged = false; |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1303 | fd = qemu_open(mount->dirname, O_RDONLY); |
| 1304 | if (fd == -1) { |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1305 | continue; |
| 1306 | } |
Michael Roth | 9e8aded43 | 2012-04-16 19:52:17 -0500 | [diff] [blame] | 1307 | /* we have no way of knowing whether a filesystem was actually unfrozen |
| 1308 | * as a result of a successful call to FITHAW, only that if an error |
| 1309 | * was returned the filesystem was *not* unfrozen by that particular |
| 1310 | * call. |
| 1311 | * |
Jim Meyering | a31f053 | 2012-05-09 05:12:04 +0000 | [diff] [blame] | 1312 | * since multiple preceding FIFREEZEs require multiple calls to FITHAW |
Michael Roth | 9e8aded43 | 2012-04-16 19:52:17 -0500 | [diff] [blame] | 1313 | * to unfreeze, continuing issuing FITHAW until an error is returned, |
| 1314 | * in which case either the filesystem is in an unfreezable state, or, |
| 1315 | * more likely, it was thawed previously (and remains so afterward). |
| 1316 | * |
| 1317 | * also, since the most recent successful call is the one that did |
| 1318 | * the actual unfreeze, we can use this to provide an accurate count |
| 1319 | * of the number of filesystems unfrozen by guest-fsfreeze-thaw, which |
| 1320 | * may * be useful for determining whether a filesystem was unfrozen |
| 1321 | * during the freeze/thaw phase by a process other than qemu-ga. |
| 1322 | */ |
| 1323 | do { |
| 1324 | ret = ioctl(fd, FITHAW); |
| 1325 | if (ret == 0 && !logged) { |
| 1326 | i++; |
| 1327 | logged = true; |
| 1328 | } |
| 1329 | } while (ret == 0); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1330 | close(fd); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1331 | } |
| 1332 | |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 1333 | ga_unset_frozen(ga_state); |
Paolo Bonzini | af02203 | 2012-06-13 07:41:27 +0200 | [diff] [blame] | 1334 | free_fs_mount_list(&mounts); |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 1335 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1336 | execute_fsfreeze_hook(FSFREEZE_HOOK_THAW, errp); |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 1337 | |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1338 | return i; |
| 1339 | } |
| 1340 | |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1341 | static void guest_fsfreeze_cleanup(void) |
| 1342 | { |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1343 | Error *err = NULL; |
| 1344 | |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 1345 | if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) { |
Markus Armbruster | 6f68674 | 2013-01-16 18:15:08 +0100 | [diff] [blame] | 1346 | qmp_guest_fsfreeze_thaw(&err); |
| 1347 | if (err) { |
| 1348 | slog("failed to clean up frozen filesystems: %s", |
| 1349 | error_get_pretty(err)); |
| 1350 | error_free(err); |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1351 | } |
| 1352 | } |
| 1353 | } |
Michael Roth | e72c3f2 | 2012-03-25 13:59:41 -0500 | [diff] [blame] | 1354 | #endif /* CONFIG_FSFREEZE */ |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1355 | |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 1356 | #if defined(CONFIG_FSTRIM) |
| 1357 | /* |
| 1358 | * Walk list of mounted file systems in the guest, and trim them. |
| 1359 | */ |
Justin Ossevoort | e82855d | 2015-05-11 08:58:45 +0200 | [diff] [blame] | 1360 | GuestFilesystemTrimResponse * |
| 1361 | qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 1362 | { |
Justin Ossevoort | e82855d | 2015-05-11 08:58:45 +0200 | [diff] [blame] | 1363 | GuestFilesystemTrimResponse *response; |
| 1364 | GuestFilesystemTrimResultList *list; |
| 1365 | GuestFilesystemTrimResult *result; |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 1366 | int ret = 0; |
| 1367 | FsMountList mounts; |
| 1368 | struct FsMount *mount; |
| 1369 | int fd; |
Luiz Capitulino | 261551d | 2012-11-29 15:29:11 -0200 | [diff] [blame] | 1370 | Error *local_err = NULL; |
Justin Ossevoort | 73a652a | 2015-05-11 08:58:44 +0200 | [diff] [blame] | 1371 | struct fstrim_range r; |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 1372 | |
| 1373 | slog("guest-fstrim called"); |
| 1374 | |
| 1375 | QTAILQ_INIT(&mounts); |
Luiz Capitulino | 261551d | 2012-11-29 15:29:11 -0200 | [diff] [blame] | 1376 | build_fs_mount_list(&mounts, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1377 | if (local_err) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1378 | error_propagate(errp, local_err); |
Justin Ossevoort | e82855d | 2015-05-11 08:58:45 +0200 | [diff] [blame] | 1379 | return NULL; |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 1380 | } |
| 1381 | |
Justin Ossevoort | e82855d | 2015-05-11 08:58:45 +0200 | [diff] [blame] | 1382 | response = g_malloc0(sizeof(*response)); |
| 1383 | |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 1384 | QTAILQ_FOREACH(mount, &mounts, next) { |
Justin Ossevoort | e82855d | 2015-05-11 08:58:45 +0200 | [diff] [blame] | 1385 | result = g_malloc0(sizeof(*result)); |
| 1386 | result->path = g_strdup(mount->dirname); |
| 1387 | |
| 1388 | list = g_malloc0(sizeof(*list)); |
| 1389 | list->value = result; |
| 1390 | list->next = response->paths; |
| 1391 | response->paths = list; |
| 1392 | |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 1393 | fd = qemu_open(mount->dirname, O_RDONLY); |
| 1394 | if (fd == -1) { |
Justin Ossevoort | e82855d | 2015-05-11 08:58:45 +0200 | [diff] [blame] | 1395 | result->error = g_strdup_printf("failed to open: %s", |
| 1396 | strerror(errno)); |
| 1397 | result->has_error = true; |
| 1398 | continue; |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 1399 | } |
| 1400 | |
Michael Tokarev | e35916a | 2016-05-18 16:11:55 +0300 | [diff] [blame] | 1401 | /* We try to cull filesystems we know won't work in advance, but other |
| 1402 | * filesystems may not implement fstrim for less obvious reasons. |
| 1403 | * These will report EOPNOTSUPP; while in some other cases ENOTTY |
| 1404 | * will be reported (e.g. CD-ROMs). |
Justin Ossevoort | e82855d | 2015-05-11 08:58:45 +0200 | [diff] [blame] | 1405 | * Any other error means an unexpected error. |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 1406 | */ |
Justin Ossevoort | 73a652a | 2015-05-11 08:58:44 +0200 | [diff] [blame] | 1407 | r.start = 0; |
| 1408 | r.len = -1; |
| 1409 | r.minlen = has_minimum ? minimum : 0; |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 1410 | ret = ioctl(fd, FITRIM, &r); |
| 1411 | if (ret == -1) { |
Justin Ossevoort | e82855d | 2015-05-11 08:58:45 +0200 | [diff] [blame] | 1412 | result->has_error = true; |
| 1413 | if (errno == ENOTTY || errno == EOPNOTSUPP) { |
| 1414 | result->error = g_strdup("trim not supported"); |
| 1415 | } else { |
| 1416 | result->error = g_strdup_printf("failed to trim: %s", |
| 1417 | strerror(errno)); |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 1418 | } |
Justin Ossevoort | e82855d | 2015-05-11 08:58:45 +0200 | [diff] [blame] | 1419 | close(fd); |
| 1420 | continue; |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 1421 | } |
Justin Ossevoort | e82855d | 2015-05-11 08:58:45 +0200 | [diff] [blame] | 1422 | |
| 1423 | result->has_minimum = true; |
| 1424 | result->minimum = r.minlen; |
| 1425 | result->has_trimmed = true; |
| 1426 | result->trimmed = r.len; |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 1427 | close(fd); |
| 1428 | } |
| 1429 | |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 1430 | free_fs_mount_list(&mounts); |
Justin Ossevoort | e82855d | 2015-05-11 08:58:45 +0200 | [diff] [blame] | 1431 | return response; |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 1432 | } |
| 1433 | #endif /* CONFIG_FSTRIM */ |
| 1434 | |
| 1435 | |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1436 | #define LINUX_SYS_STATE_FILE "/sys/power/state" |
| 1437 | #define SUSPEND_SUPPORTED 0 |
| 1438 | #define SUSPEND_NOT_SUPPORTED 1 |
| 1439 | |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1440 | static void bios_supports_mode(const char *pmutils_bin, const char *pmutils_arg, |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1441 | const char *sysfile_str, Error **errp) |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1442 | { |
Luiz Capitulino | 6b26e83 | 2012-11-27 11:02:03 -0200 | [diff] [blame] | 1443 | Error *local_err = NULL; |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1444 | char *pmutils_path; |
Luiz Capitulino | 6b26e83 | 2012-11-27 11:02:03 -0200 | [diff] [blame] | 1445 | pid_t pid; |
Luiz Capitulino | dc8764f0 | 2012-05-11 16:19:46 -0300 | [diff] [blame] | 1446 | int status; |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1447 | |
| 1448 | pmutils_path = g_find_program_in_path(pmutils_bin); |
| 1449 | |
| 1450 | pid = fork(); |
| 1451 | if (!pid) { |
Luiz Capitulino | dc8764f0 | 2012-05-11 16:19:46 -0300 | [diff] [blame] | 1452 | char buf[32]; /* hopefully big enough */ |
| 1453 | ssize_t ret; |
| 1454 | int fd; |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1455 | |
| 1456 | setsid(); |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1457 | reopen_fd_to_null(0); |
| 1458 | reopen_fd_to_null(1); |
| 1459 | reopen_fd_to_null(2); |
| 1460 | |
Luiz Capitulino | dc8764f0 | 2012-05-11 16:19:46 -0300 | [diff] [blame] | 1461 | if (pmutils_path) { |
| 1462 | execle(pmutils_path, pmutils_bin, pmutils_arg, NULL, environ); |
| 1463 | } |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1464 | |
Luiz Capitulino | dc8764f0 | 2012-05-11 16:19:46 -0300 | [diff] [blame] | 1465 | /* |
| 1466 | * If we get here either pm-utils is not installed or execle() has |
| 1467 | * failed. Let's try the manual method if the caller wants it. |
| 1468 | */ |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1469 | |
Luiz Capitulino | dc8764f0 | 2012-05-11 16:19:46 -0300 | [diff] [blame] | 1470 | if (!sysfile_str) { |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1471 | _exit(SUSPEND_NOT_SUPPORTED); |
| 1472 | } |
| 1473 | |
Luiz Capitulino | dc8764f0 | 2012-05-11 16:19:46 -0300 | [diff] [blame] | 1474 | fd = open(LINUX_SYS_STATE_FILE, O_RDONLY); |
| 1475 | if (fd < 0) { |
| 1476 | _exit(SUSPEND_NOT_SUPPORTED); |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1477 | } |
| 1478 | |
Luiz Capitulino | dc8764f0 | 2012-05-11 16:19:46 -0300 | [diff] [blame] | 1479 | ret = read(fd, buf, sizeof(buf)-1); |
| 1480 | if (ret <= 0) { |
| 1481 | _exit(SUSPEND_NOT_SUPPORTED); |
| 1482 | } |
| 1483 | buf[ret] = '\0'; |
| 1484 | |
| 1485 | if (strstr(buf, sysfile_str)) { |
| 1486 | _exit(SUSPEND_SUPPORTED); |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1487 | } |
| 1488 | |
Luiz Capitulino | dc8764f0 | 2012-05-11 16:19:46 -0300 | [diff] [blame] | 1489 | _exit(SUSPEND_NOT_SUPPORTED); |
Luiz Capitulino | 6b26e83 | 2012-11-27 11:02:03 -0200 | [diff] [blame] | 1490 | } else if (pid < 0) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1491 | error_setg_errno(errp, errno, "failed to create child process"); |
Luiz Capitulino | 6b26e83 | 2012-11-27 11:02:03 -0200 | [diff] [blame] | 1492 | goto out; |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1493 | } |
| 1494 | |
Luiz Capitulino | 6b26e83 | 2012-11-27 11:02:03 -0200 | [diff] [blame] | 1495 | ga_wait_child(pid, &status, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1496 | if (local_err) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1497 | error_propagate(errp, local_err); |
Luiz Capitulino | 6b26e83 | 2012-11-27 11:02:03 -0200 | [diff] [blame] | 1498 | goto out; |
| 1499 | } |
| 1500 | |
| 1501 | if (!WIFEXITED(status)) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1502 | error_setg(errp, "child process has terminated abnormally"); |
Luiz Capitulino | 6b26e83 | 2012-11-27 11:02:03 -0200 | [diff] [blame] | 1503 | goto out; |
| 1504 | } |
| 1505 | |
| 1506 | switch (WEXITSTATUS(status)) { |
| 1507 | case SUSPEND_SUPPORTED: |
| 1508 | goto out; |
| 1509 | case SUSPEND_NOT_SUPPORTED: |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1510 | error_setg(errp, |
Luiz Capitulino | 6b26e83 | 2012-11-27 11:02:03 -0200 | [diff] [blame] | 1511 | "the requested suspend mode is not supported by the guest"); |
| 1512 | goto out; |
| 1513 | default: |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1514 | error_setg(errp, |
Luiz Capitulino | 6b26e83 | 2012-11-27 11:02:03 -0200 | [diff] [blame] | 1515 | "the helper program '%s' returned an unexpected exit status" |
| 1516 | " code (%d)", pmutils_path, WEXITSTATUS(status)); |
| 1517 | goto out; |
| 1518 | } |
| 1519 | |
| 1520 | out: |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1521 | g_free(pmutils_path); |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1522 | } |
| 1523 | |
| 1524 | static void guest_suspend(const char *pmutils_bin, const char *sysfile_str, |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1525 | Error **errp) |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1526 | { |
Luiz Capitulino | 7b37608 | 2012-11-27 11:02:04 -0200 | [diff] [blame] | 1527 | Error *local_err = NULL; |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1528 | char *pmutils_path; |
Luiz Capitulino | 7b37608 | 2012-11-27 11:02:04 -0200 | [diff] [blame] | 1529 | pid_t pid; |
Luiz Capitulino | dc8764f0 | 2012-05-11 16:19:46 -0300 | [diff] [blame] | 1530 | int status; |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1531 | |
| 1532 | pmutils_path = g_find_program_in_path(pmutils_bin); |
| 1533 | |
| 1534 | pid = fork(); |
| 1535 | if (pid == 0) { |
| 1536 | /* child */ |
| 1537 | int fd; |
| 1538 | |
| 1539 | setsid(); |
| 1540 | reopen_fd_to_null(0); |
| 1541 | reopen_fd_to_null(1); |
| 1542 | reopen_fd_to_null(2); |
| 1543 | |
| 1544 | if (pmutils_path) { |
| 1545 | execle(pmutils_path, pmutils_bin, NULL, environ); |
| 1546 | } |
| 1547 | |
| 1548 | /* |
| 1549 | * If we get here either pm-utils is not installed or execle() has |
| 1550 | * failed. Let's try the manual method if the caller wants it. |
| 1551 | */ |
| 1552 | |
| 1553 | if (!sysfile_str) { |
| 1554 | _exit(EXIT_FAILURE); |
| 1555 | } |
| 1556 | |
| 1557 | fd = open(LINUX_SYS_STATE_FILE, O_WRONLY); |
| 1558 | if (fd < 0) { |
| 1559 | _exit(EXIT_FAILURE); |
| 1560 | } |
| 1561 | |
| 1562 | if (write(fd, sysfile_str, strlen(sysfile_str)) < 0) { |
| 1563 | _exit(EXIT_FAILURE); |
| 1564 | } |
| 1565 | |
| 1566 | _exit(EXIT_SUCCESS); |
Luiz Capitulino | 7b37608 | 2012-11-27 11:02:04 -0200 | [diff] [blame] | 1567 | } else if (pid < 0) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1568 | error_setg_errno(errp, errno, "failed to create child process"); |
Luiz Capitulino | 7b37608 | 2012-11-27 11:02:04 -0200 | [diff] [blame] | 1569 | goto out; |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1570 | } |
| 1571 | |
Luiz Capitulino | 7b37608 | 2012-11-27 11:02:04 -0200 | [diff] [blame] | 1572 | ga_wait_child(pid, &status, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1573 | if (local_err) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1574 | error_propagate(errp, local_err); |
Luiz Capitulino | 7b37608 | 2012-11-27 11:02:04 -0200 | [diff] [blame] | 1575 | goto out; |
| 1576 | } |
| 1577 | |
| 1578 | if (!WIFEXITED(status)) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1579 | error_setg(errp, "child process has terminated abnormally"); |
Luiz Capitulino | 7b37608 | 2012-11-27 11:02:04 -0200 | [diff] [blame] | 1580 | goto out; |
| 1581 | } |
| 1582 | |
| 1583 | if (WEXITSTATUS(status)) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1584 | error_setg(errp, "child process has failed to suspend"); |
Luiz Capitulino | 7b37608 | 2012-11-27 11:02:04 -0200 | [diff] [blame] | 1585 | goto out; |
| 1586 | } |
| 1587 | |
| 1588 | out: |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1589 | g_free(pmutils_path); |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1590 | } |
| 1591 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1592 | void qmp_guest_suspend_disk(Error **errp) |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1593 | { |
Markus Armbruster | 0f230bf | 2014-05-02 13:26:38 +0200 | [diff] [blame] | 1594 | Error *local_err = NULL; |
| 1595 | |
| 1596 | bios_supports_mode("pm-is-supported", "--hibernate", "disk", &local_err); |
| 1597 | if (local_err) { |
| 1598 | error_propagate(errp, local_err); |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1599 | return; |
| 1600 | } |
| 1601 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1602 | guest_suspend("pm-hibernate", "disk", errp); |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 1603 | } |
| 1604 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1605 | void qmp_guest_suspend_ram(Error **errp) |
Luiz Capitulino | fbf4221 | 2012-02-28 11:03:04 -0300 | [diff] [blame] | 1606 | { |
Markus Armbruster | 0f230bf | 2014-05-02 13:26:38 +0200 | [diff] [blame] | 1607 | Error *local_err = NULL; |
| 1608 | |
| 1609 | bios_supports_mode("pm-is-supported", "--suspend", "mem", &local_err); |
| 1610 | if (local_err) { |
| 1611 | error_propagate(errp, local_err); |
Luiz Capitulino | fbf4221 | 2012-02-28 11:03:04 -0300 | [diff] [blame] | 1612 | return; |
| 1613 | } |
| 1614 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1615 | guest_suspend("pm-suspend", "mem", errp); |
Luiz Capitulino | fbf4221 | 2012-02-28 11:03:04 -0300 | [diff] [blame] | 1616 | } |
| 1617 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1618 | void qmp_guest_suspend_hybrid(Error **errp) |
Luiz Capitulino | 95f4f40 | 2012-02-28 11:03:05 -0300 | [diff] [blame] | 1619 | { |
Markus Armbruster | 0f230bf | 2014-05-02 13:26:38 +0200 | [diff] [blame] | 1620 | Error *local_err = NULL; |
| 1621 | |
| 1622 | bios_supports_mode("pm-is-supported", "--suspend-hybrid", NULL, |
| 1623 | &local_err); |
| 1624 | if (local_err) { |
| 1625 | error_propagate(errp, local_err); |
Luiz Capitulino | 95f4f40 | 2012-02-28 11:03:05 -0300 | [diff] [blame] | 1626 | return; |
| 1627 | } |
| 1628 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1629 | guest_suspend("pm-suspend-hybrid", NULL, errp); |
Luiz Capitulino | 95f4f40 | 2012-02-28 11:03:05 -0300 | [diff] [blame] | 1630 | } |
| 1631 | |
Michal Privoznik | 3424fc9 | 2012-02-29 17:02:23 +0100 | [diff] [blame] | 1632 | static GuestNetworkInterfaceList * |
| 1633 | guest_find_interface(GuestNetworkInterfaceList *head, |
| 1634 | const char *name) |
| 1635 | { |
| 1636 | for (; head; head = head->next) { |
| 1637 | if (strcmp(head->value->name, name) == 0) { |
| 1638 | break; |
| 1639 | } |
| 1640 | } |
| 1641 | |
| 1642 | return head; |
| 1643 | } |
| 1644 | |
| 1645 | /* |
| 1646 | * Build information about guest interfaces |
| 1647 | */ |
| 1648 | GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) |
| 1649 | { |
| 1650 | GuestNetworkInterfaceList *head = NULL, *cur_item = NULL; |
| 1651 | struct ifaddrs *ifap, *ifa; |
Michal Privoznik | 3424fc9 | 2012-02-29 17:02:23 +0100 | [diff] [blame] | 1652 | |
| 1653 | if (getifaddrs(&ifap) < 0) { |
Luiz Capitulino | 878a0ae | 2012-11-27 11:02:02 -0200 | [diff] [blame] | 1654 | error_setg_errno(errp, errno, "getifaddrs failed"); |
Michal Privoznik | 3424fc9 | 2012-02-29 17:02:23 +0100 | [diff] [blame] | 1655 | goto error; |
| 1656 | } |
| 1657 | |
| 1658 | for (ifa = ifap; ifa; ifa = ifa->ifa_next) { |
| 1659 | GuestNetworkInterfaceList *info; |
| 1660 | GuestIpAddressList **address_list = NULL, *address_item = NULL; |
| 1661 | char addr4[INET_ADDRSTRLEN]; |
| 1662 | char addr6[INET6_ADDRSTRLEN]; |
| 1663 | int sock; |
| 1664 | struct ifreq ifr; |
| 1665 | unsigned char *mac_addr; |
| 1666 | void *p; |
| 1667 | |
| 1668 | g_debug("Processing %s interface", ifa->ifa_name); |
| 1669 | |
| 1670 | info = guest_find_interface(head, ifa->ifa_name); |
| 1671 | |
| 1672 | if (!info) { |
| 1673 | info = g_malloc0(sizeof(*info)); |
| 1674 | info->value = g_malloc0(sizeof(*info->value)); |
| 1675 | info->value->name = g_strdup(ifa->ifa_name); |
| 1676 | |
| 1677 | if (!cur_item) { |
| 1678 | head = cur_item = info; |
| 1679 | } else { |
| 1680 | cur_item->next = info; |
| 1681 | cur_item = info; |
| 1682 | } |
| 1683 | } |
| 1684 | |
| 1685 | if (!info->value->has_hardware_address && |
| 1686 | ifa->ifa_flags & SIOCGIFHWADDR) { |
| 1687 | /* we haven't obtained HW address yet */ |
| 1688 | sock = socket(PF_INET, SOCK_STREAM, 0); |
| 1689 | if (sock == -1) { |
Luiz Capitulino | 878a0ae | 2012-11-27 11:02:02 -0200 | [diff] [blame] | 1690 | error_setg_errno(errp, errno, "failed to create socket"); |
Michal Privoznik | 3424fc9 | 2012-02-29 17:02:23 +0100 | [diff] [blame] | 1691 | goto error; |
| 1692 | } |
| 1693 | |
| 1694 | memset(&ifr, 0, sizeof(ifr)); |
Jim Meyering | 1ab516e | 2012-10-04 13:09:58 +0200 | [diff] [blame] | 1695 | pstrcpy(ifr.ifr_name, IF_NAMESIZE, info->value->name); |
Michal Privoznik | 3424fc9 | 2012-02-29 17:02:23 +0100 | [diff] [blame] | 1696 | if (ioctl(sock, SIOCGIFHWADDR, &ifr) == -1) { |
Luiz Capitulino | 878a0ae | 2012-11-27 11:02:02 -0200 | [diff] [blame] | 1697 | error_setg_errno(errp, errno, |
| 1698 | "failed to get MAC address of %s", |
| 1699 | ifa->ifa_name); |
Markus Armbruster | 10a2158 | 2013-01-16 18:15:09 +0100 | [diff] [blame] | 1700 | close(sock); |
Michal Privoznik | 3424fc9 | 2012-02-29 17:02:23 +0100 | [diff] [blame] | 1701 | goto error; |
| 1702 | } |
| 1703 | |
Markus Armbruster | 10a2158 | 2013-01-16 18:15:09 +0100 | [diff] [blame] | 1704 | close(sock); |
Michal Privoznik | 3424fc9 | 2012-02-29 17:02:23 +0100 | [diff] [blame] | 1705 | mac_addr = (unsigned char *) &ifr.ifr_hwaddr.sa_data; |
| 1706 | |
Stefan Weil | e4ada48 | 2013-01-16 18:37:23 +0100 | [diff] [blame] | 1707 | info->value->hardware_address = |
| 1708 | g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x", |
| 1709 | (int) mac_addr[0], (int) mac_addr[1], |
| 1710 | (int) mac_addr[2], (int) mac_addr[3], |
| 1711 | (int) mac_addr[4], (int) mac_addr[5]); |
Michal Privoznik | 3424fc9 | 2012-02-29 17:02:23 +0100 | [diff] [blame] | 1712 | |
| 1713 | info->value->has_hardware_address = true; |
Michal Privoznik | 3424fc9 | 2012-02-29 17:02:23 +0100 | [diff] [blame] | 1714 | } |
| 1715 | |
| 1716 | if (ifa->ifa_addr && |
| 1717 | ifa->ifa_addr->sa_family == AF_INET) { |
| 1718 | /* interface with IPv4 address */ |
Michal Privoznik | 3424fc9 | 2012-02-29 17:02:23 +0100 | [diff] [blame] | 1719 | p = &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr; |
| 1720 | if (!inet_ntop(AF_INET, p, addr4, sizeof(addr4))) { |
Luiz Capitulino | 878a0ae | 2012-11-27 11:02:02 -0200 | [diff] [blame] | 1721 | error_setg_errno(errp, errno, "inet_ntop failed"); |
Michal Privoznik | 3424fc9 | 2012-02-29 17:02:23 +0100 | [diff] [blame] | 1722 | goto error; |
| 1723 | } |
| 1724 | |
Markus Armbruster | 10a2158 | 2013-01-16 18:15:09 +0100 | [diff] [blame] | 1725 | address_item = g_malloc0(sizeof(*address_item)); |
| 1726 | address_item->value = g_malloc0(sizeof(*address_item->value)); |
Michal Privoznik | 3424fc9 | 2012-02-29 17:02:23 +0100 | [diff] [blame] | 1727 | address_item->value->ip_address = g_strdup(addr4); |
| 1728 | address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4; |
| 1729 | |
| 1730 | if (ifa->ifa_netmask) { |
| 1731 | /* Count the number of set bits in netmask. |
| 1732 | * This is safe as '1' and '0' cannot be shuffled in netmask. */ |
| 1733 | p = &((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr; |
| 1734 | address_item->value->prefix = ctpop32(((uint32_t *) p)[0]); |
| 1735 | } |
| 1736 | } else if (ifa->ifa_addr && |
| 1737 | ifa->ifa_addr->sa_family == AF_INET6) { |
| 1738 | /* interface with IPv6 address */ |
Michal Privoznik | 3424fc9 | 2012-02-29 17:02:23 +0100 | [diff] [blame] | 1739 | p = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr; |
| 1740 | if (!inet_ntop(AF_INET6, p, addr6, sizeof(addr6))) { |
Luiz Capitulino | 878a0ae | 2012-11-27 11:02:02 -0200 | [diff] [blame] | 1741 | error_setg_errno(errp, errno, "inet_ntop failed"); |
Michal Privoznik | 3424fc9 | 2012-02-29 17:02:23 +0100 | [diff] [blame] | 1742 | goto error; |
| 1743 | } |
| 1744 | |
Markus Armbruster | 10a2158 | 2013-01-16 18:15:09 +0100 | [diff] [blame] | 1745 | address_item = g_malloc0(sizeof(*address_item)); |
| 1746 | address_item->value = g_malloc0(sizeof(*address_item->value)); |
Michal Privoznik | 3424fc9 | 2012-02-29 17:02:23 +0100 | [diff] [blame] | 1747 | address_item->value->ip_address = g_strdup(addr6); |
| 1748 | address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6; |
| 1749 | |
| 1750 | if (ifa->ifa_netmask) { |
| 1751 | /* Count the number of set bits in netmask. |
| 1752 | * This is safe as '1' and '0' cannot be shuffled in netmask. */ |
| 1753 | p = &((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr; |
| 1754 | address_item->value->prefix = |
| 1755 | ctpop32(((uint32_t *) p)[0]) + |
| 1756 | ctpop32(((uint32_t *) p)[1]) + |
| 1757 | ctpop32(((uint32_t *) p)[2]) + |
| 1758 | ctpop32(((uint32_t *) p)[3]); |
| 1759 | } |
| 1760 | } |
| 1761 | |
| 1762 | if (!address_item) { |
| 1763 | continue; |
| 1764 | } |
| 1765 | |
| 1766 | address_list = &info->value->ip_addresses; |
| 1767 | |
| 1768 | while (*address_list && (*address_list)->next) { |
| 1769 | address_list = &(*address_list)->next; |
| 1770 | } |
| 1771 | |
| 1772 | if (!*address_list) { |
| 1773 | *address_list = address_item; |
| 1774 | } else { |
| 1775 | (*address_list)->next = address_item; |
| 1776 | } |
| 1777 | |
| 1778 | info->value->has_ip_addresses = true; |
| 1779 | |
| 1780 | |
| 1781 | } |
| 1782 | |
| 1783 | freeifaddrs(ifap); |
| 1784 | return head; |
| 1785 | |
| 1786 | error: |
| 1787 | freeifaddrs(ifap); |
| 1788 | qapi_free_GuestNetworkInterfaceList(head); |
| 1789 | return NULL; |
| 1790 | } |
| 1791 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1792 | #define SYSCONF_EXACT(name, errp) sysconf_exact((name), #name, (errp)) |
Laszlo Ersek | d2baff6 | 2013-03-06 22:59:30 +0100 | [diff] [blame] | 1793 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1794 | static long sysconf_exact(int name, const char *name_str, Error **errp) |
Laszlo Ersek | d2baff6 | 2013-03-06 22:59:30 +0100 | [diff] [blame] | 1795 | { |
| 1796 | long ret; |
| 1797 | |
| 1798 | errno = 0; |
| 1799 | ret = sysconf(name); |
| 1800 | if (ret == -1) { |
| 1801 | if (errno == 0) { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1802 | error_setg(errp, "sysconf(%s): value indefinite", name_str); |
Laszlo Ersek | d2baff6 | 2013-03-06 22:59:30 +0100 | [diff] [blame] | 1803 | } else { |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 1804 | error_setg_errno(errp, errno, "sysconf(%s)", name_str); |
Laszlo Ersek | d2baff6 | 2013-03-06 22:59:30 +0100 | [diff] [blame] | 1805 | } |
| 1806 | } |
| 1807 | return ret; |
| 1808 | } |
| 1809 | |
| 1810 | /* Transfer online/offline status between @vcpu and the guest system. |
| 1811 | * |
| 1812 | * On input either @errp or *@errp must be NULL. |
| 1813 | * |
| 1814 | * In system-to-@vcpu direction, the following @vcpu fields are accessed: |
| 1815 | * - R: vcpu->logical_id |
| 1816 | * - W: vcpu->online |
| 1817 | * - W: vcpu->can_offline |
| 1818 | * |
| 1819 | * In @vcpu-to-system direction, the following @vcpu fields are accessed: |
| 1820 | * - R: vcpu->logical_id |
| 1821 | * - R: vcpu->online |
| 1822 | * |
| 1823 | * Written members remain unmodified on error. |
| 1824 | */ |
| 1825 | static void transfer_vcpu(GuestLogicalProcessor *vcpu, bool sys2vcpu, |
| 1826 | Error **errp) |
| 1827 | { |
| 1828 | char *dirpath; |
| 1829 | int dirfd; |
| 1830 | |
| 1831 | dirpath = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/", |
| 1832 | vcpu->logical_id); |
| 1833 | dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); |
| 1834 | if (dirfd == -1) { |
| 1835 | error_setg_errno(errp, errno, "open(\"%s\")", dirpath); |
| 1836 | } else { |
| 1837 | static const char fn[] = "online"; |
| 1838 | int fd; |
| 1839 | int res; |
| 1840 | |
| 1841 | fd = openat(dirfd, fn, sys2vcpu ? O_RDONLY : O_RDWR); |
| 1842 | if (fd == -1) { |
| 1843 | if (errno != ENOENT) { |
| 1844 | error_setg_errno(errp, errno, "open(\"%s/%s\")", dirpath, fn); |
| 1845 | } else if (sys2vcpu) { |
| 1846 | vcpu->online = true; |
| 1847 | vcpu->can_offline = false; |
| 1848 | } else if (!vcpu->online) { |
| 1849 | error_setg(errp, "logical processor #%" PRId64 " can't be " |
| 1850 | "offlined", vcpu->logical_id); |
| 1851 | } /* otherwise pretend successful re-onlining */ |
| 1852 | } else { |
| 1853 | unsigned char status; |
| 1854 | |
| 1855 | res = pread(fd, &status, 1, 0); |
| 1856 | if (res == -1) { |
| 1857 | error_setg_errno(errp, errno, "pread(\"%s/%s\")", dirpath, fn); |
| 1858 | } else if (res == 0) { |
| 1859 | error_setg(errp, "pread(\"%s/%s\"): unexpected EOF", dirpath, |
| 1860 | fn); |
| 1861 | } else if (sys2vcpu) { |
| 1862 | vcpu->online = (status != '0'); |
| 1863 | vcpu->can_offline = true; |
| 1864 | } else if (vcpu->online != (status != '0')) { |
| 1865 | status = '0' + vcpu->online; |
| 1866 | if (pwrite(fd, &status, 1, 0) == -1) { |
| 1867 | error_setg_errno(errp, errno, "pwrite(\"%s/%s\")", dirpath, |
| 1868 | fn); |
| 1869 | } |
| 1870 | } /* otherwise pretend successful re-(on|off)-lining */ |
| 1871 | |
| 1872 | res = close(fd); |
| 1873 | g_assert(res == 0); |
| 1874 | } |
| 1875 | |
| 1876 | res = close(dirfd); |
| 1877 | g_assert(res == 0); |
| 1878 | } |
| 1879 | |
| 1880 | g_free(dirpath); |
| 1881 | } |
| 1882 | |
| 1883 | GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) |
| 1884 | { |
| 1885 | int64_t current; |
| 1886 | GuestLogicalProcessorList *head, **link; |
| 1887 | long sc_max; |
| 1888 | Error *local_err = NULL; |
| 1889 | |
| 1890 | current = 0; |
| 1891 | head = NULL; |
| 1892 | link = &head; |
| 1893 | sc_max = SYSCONF_EXACT(_SC_NPROCESSORS_CONF, &local_err); |
| 1894 | |
| 1895 | while (local_err == NULL && current < sc_max) { |
| 1896 | GuestLogicalProcessor *vcpu; |
| 1897 | GuestLogicalProcessorList *entry; |
| 1898 | |
| 1899 | vcpu = g_malloc0(sizeof *vcpu); |
| 1900 | vcpu->logical_id = current++; |
| 1901 | vcpu->has_can_offline = true; /* lolspeak ftw */ |
| 1902 | transfer_vcpu(vcpu, true, &local_err); |
| 1903 | |
| 1904 | entry = g_malloc0(sizeof *entry); |
| 1905 | entry->value = vcpu; |
| 1906 | |
| 1907 | *link = entry; |
| 1908 | link = &entry->next; |
| 1909 | } |
| 1910 | |
| 1911 | if (local_err == NULL) { |
| 1912 | /* there's no guest with zero VCPUs */ |
| 1913 | g_assert(head != NULL); |
| 1914 | return head; |
| 1915 | } |
| 1916 | |
| 1917 | qapi_free_GuestLogicalProcessorList(head); |
| 1918 | error_propagate(errp, local_err); |
| 1919 | return NULL; |
| 1920 | } |
| 1921 | |
Laszlo Ersek | cbb65fc | 2013-03-06 22:59:31 +0100 | [diff] [blame] | 1922 | int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) |
| 1923 | { |
| 1924 | int64_t processed; |
| 1925 | Error *local_err = NULL; |
| 1926 | |
| 1927 | processed = 0; |
| 1928 | while (vcpus != NULL) { |
| 1929 | transfer_vcpu(vcpus->value, false, &local_err); |
| 1930 | if (local_err != NULL) { |
| 1931 | break; |
| 1932 | } |
| 1933 | ++processed; |
| 1934 | vcpus = vcpus->next; |
| 1935 | } |
| 1936 | |
| 1937 | if (local_err != NULL) { |
| 1938 | if (processed == 0) { |
| 1939 | error_propagate(errp, local_err); |
| 1940 | } else { |
| 1941 | error_free(local_err); |
| 1942 | } |
| 1943 | } |
| 1944 | |
| 1945 | return processed; |
| 1946 | } |
| 1947 | |
Daniel P. Berrange | 215a277 | 2015-02-11 11:26:12 +0000 | [diff] [blame] | 1948 | void qmp_guest_set_user_password(const char *username, |
| 1949 | const char *password, |
| 1950 | bool crypted, |
| 1951 | Error **errp) |
| 1952 | { |
| 1953 | Error *local_err = NULL; |
| 1954 | char *passwd_path = NULL; |
| 1955 | pid_t pid; |
| 1956 | int status; |
| 1957 | int datafd[2] = { -1, -1 }; |
| 1958 | char *rawpasswddata = NULL; |
| 1959 | size_t rawpasswdlen; |
| 1960 | char *chpasswddata = NULL; |
| 1961 | size_t chpasswdlen; |
| 1962 | |
Daniel P. Berrange | 920639c | 2015-11-23 15:37:07 +0000 | [diff] [blame] | 1963 | rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp); |
| 1964 | if (!rawpasswddata) { |
| 1965 | return; |
| 1966 | } |
Daniel P. Berrange | 215a277 | 2015-02-11 11:26:12 +0000 | [diff] [blame] | 1967 | rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1); |
| 1968 | rawpasswddata[rawpasswdlen] = '\0'; |
| 1969 | |
| 1970 | if (strchr(rawpasswddata, '\n')) { |
| 1971 | error_setg(errp, "forbidden characters in raw password"); |
| 1972 | goto out; |
| 1973 | } |
| 1974 | |
| 1975 | if (strchr(username, '\n') || |
| 1976 | strchr(username, ':')) { |
| 1977 | error_setg(errp, "forbidden characters in username"); |
| 1978 | goto out; |
| 1979 | } |
| 1980 | |
| 1981 | chpasswddata = g_strdup_printf("%s:%s\n", username, rawpasswddata); |
| 1982 | chpasswdlen = strlen(chpasswddata); |
| 1983 | |
| 1984 | passwd_path = g_find_program_in_path("chpasswd"); |
| 1985 | |
| 1986 | if (!passwd_path) { |
| 1987 | error_setg(errp, "cannot find 'passwd' program in PATH"); |
| 1988 | goto out; |
| 1989 | } |
| 1990 | |
| 1991 | if (pipe(datafd) < 0) { |
| 1992 | error_setg(errp, "cannot create pipe FDs"); |
| 1993 | goto out; |
| 1994 | } |
| 1995 | |
| 1996 | pid = fork(); |
| 1997 | if (pid == 0) { |
| 1998 | close(datafd[1]); |
| 1999 | /* child */ |
| 2000 | setsid(); |
| 2001 | dup2(datafd[0], 0); |
| 2002 | reopen_fd_to_null(1); |
| 2003 | reopen_fd_to_null(2); |
| 2004 | |
| 2005 | if (crypted) { |
| 2006 | execle(passwd_path, "chpasswd", "-e", NULL, environ); |
| 2007 | } else { |
| 2008 | execle(passwd_path, "chpasswd", NULL, environ); |
| 2009 | } |
| 2010 | _exit(EXIT_FAILURE); |
| 2011 | } else if (pid < 0) { |
| 2012 | error_setg_errno(errp, errno, "failed to create child process"); |
| 2013 | goto out; |
| 2014 | } |
| 2015 | close(datafd[0]); |
| 2016 | datafd[0] = -1; |
| 2017 | |
| 2018 | if (qemu_write_full(datafd[1], chpasswddata, chpasswdlen) != chpasswdlen) { |
| 2019 | error_setg_errno(errp, errno, "cannot write new account password"); |
| 2020 | goto out; |
| 2021 | } |
| 2022 | close(datafd[1]); |
| 2023 | datafd[1] = -1; |
| 2024 | |
| 2025 | ga_wait_child(pid, &status, &local_err); |
| 2026 | if (local_err) { |
| 2027 | error_propagate(errp, local_err); |
| 2028 | goto out; |
| 2029 | } |
| 2030 | |
| 2031 | if (!WIFEXITED(status)) { |
| 2032 | error_setg(errp, "child process has terminated abnormally"); |
| 2033 | goto out; |
| 2034 | } |
| 2035 | |
| 2036 | if (WEXITSTATUS(status)) { |
| 2037 | error_setg(errp, "child process has failed to set user password"); |
| 2038 | goto out; |
| 2039 | } |
| 2040 | |
| 2041 | out: |
| 2042 | g_free(chpasswddata); |
| 2043 | g_free(rawpasswddata); |
| 2044 | g_free(passwd_path); |
| 2045 | if (datafd[0] != -1) { |
| 2046 | close(datafd[0]); |
| 2047 | } |
| 2048 | if (datafd[1] != -1) { |
| 2049 | close(datafd[1]); |
| 2050 | } |
| 2051 | } |
| 2052 | |
zhanghailiang | bd240fc | 2015-01-22 10:40:03 +0800 | [diff] [blame] | 2053 | static void ga_read_sysfs_file(int dirfd, const char *pathname, char *buf, |
| 2054 | int size, Error **errp) |
| 2055 | { |
| 2056 | int fd; |
| 2057 | int res; |
| 2058 | |
| 2059 | errno = 0; |
| 2060 | fd = openat(dirfd, pathname, O_RDONLY); |
| 2061 | if (fd == -1) { |
| 2062 | error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); |
| 2063 | return; |
| 2064 | } |
| 2065 | |
| 2066 | res = pread(fd, buf, size, 0); |
| 2067 | if (res == -1) { |
| 2068 | error_setg_errno(errp, errno, "pread sysfs file \"%s\"", pathname); |
| 2069 | } else if (res == 0) { |
| 2070 | error_setg(errp, "pread sysfs file \"%s\": unexpected EOF", pathname); |
| 2071 | } |
| 2072 | close(fd); |
| 2073 | } |
| 2074 | |
| 2075 | static void ga_write_sysfs_file(int dirfd, const char *pathname, |
| 2076 | const char *buf, int size, Error **errp) |
| 2077 | { |
| 2078 | int fd; |
| 2079 | |
| 2080 | errno = 0; |
| 2081 | fd = openat(dirfd, pathname, O_WRONLY); |
| 2082 | if (fd == -1) { |
| 2083 | error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); |
| 2084 | return; |
| 2085 | } |
| 2086 | |
| 2087 | if (pwrite(fd, buf, size, 0) == -1) { |
| 2088 | error_setg_errno(errp, errno, "pwrite sysfs file \"%s\"", pathname); |
| 2089 | } |
| 2090 | |
| 2091 | close(fd); |
| 2092 | } |
| 2093 | |
| 2094 | /* Transfer online/offline status between @mem_blk and the guest system. |
| 2095 | * |
| 2096 | * On input either @errp or *@errp must be NULL. |
| 2097 | * |
| 2098 | * In system-to-@mem_blk direction, the following @mem_blk fields are accessed: |
| 2099 | * - R: mem_blk->phys_index |
| 2100 | * - W: mem_blk->online |
| 2101 | * - W: mem_blk->can_offline |
| 2102 | * |
| 2103 | * In @mem_blk-to-system direction, the following @mem_blk fields are accessed: |
| 2104 | * - R: mem_blk->phys_index |
| 2105 | * - R: mem_blk->online |
| 2106 | *- R: mem_blk->can_offline |
| 2107 | * Written members remain unmodified on error. |
| 2108 | */ |
| 2109 | static void transfer_memory_block(GuestMemoryBlock *mem_blk, bool sys2memblk, |
| 2110 | GuestMemoryBlockResponse *result, |
| 2111 | Error **errp) |
| 2112 | { |
| 2113 | char *dirpath; |
| 2114 | int dirfd; |
| 2115 | char *status; |
| 2116 | Error *local_err = NULL; |
| 2117 | |
| 2118 | if (!sys2memblk) { |
| 2119 | DIR *dp; |
| 2120 | |
| 2121 | if (!result) { |
| 2122 | error_setg(errp, "Internal error, 'result' should not be NULL"); |
| 2123 | return; |
| 2124 | } |
| 2125 | errno = 0; |
| 2126 | dp = opendir("/sys/devices/system/memory/"); |
| 2127 | /* if there is no 'memory' directory in sysfs, |
| 2128 | * we think this VM does not support online/offline memory block, |
| 2129 | * any other solution? |
| 2130 | */ |
Philippe Mathieu-Daudé | 9879f5a | 2017-04-07 19:20:15 -0300 | [diff] [blame] | 2131 | if (!dp) { |
| 2132 | if (errno == ENOENT) { |
| 2133 | result->response = |
| 2134 | GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; |
| 2135 | } |
zhanghailiang | bd240fc | 2015-01-22 10:40:03 +0800 | [diff] [blame] | 2136 | goto out1; |
| 2137 | } |
| 2138 | closedir(dp); |
| 2139 | } |
| 2140 | |
| 2141 | dirpath = g_strdup_printf("/sys/devices/system/memory/memory%" PRId64 "/", |
| 2142 | mem_blk->phys_index); |
| 2143 | dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); |
| 2144 | if (dirfd == -1) { |
| 2145 | if (sys2memblk) { |
| 2146 | error_setg_errno(errp, errno, "open(\"%s\")", dirpath); |
| 2147 | } else { |
| 2148 | if (errno == ENOENT) { |
| 2149 | result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_NOT_FOUND; |
| 2150 | } else { |
| 2151 | result->response = |
| 2152 | GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; |
| 2153 | } |
| 2154 | } |
| 2155 | g_free(dirpath); |
| 2156 | goto out1; |
| 2157 | } |
| 2158 | g_free(dirpath); |
| 2159 | |
| 2160 | status = g_malloc0(10); |
| 2161 | ga_read_sysfs_file(dirfd, "state", status, 10, &local_err); |
| 2162 | if (local_err) { |
| 2163 | /* treat with sysfs file that not exist in old kernel */ |
| 2164 | if (errno == ENOENT) { |
| 2165 | error_free(local_err); |
| 2166 | if (sys2memblk) { |
| 2167 | mem_blk->online = true; |
| 2168 | mem_blk->can_offline = false; |
| 2169 | } else if (!mem_blk->online) { |
| 2170 | result->response = |
| 2171 | GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; |
| 2172 | } |
| 2173 | } else { |
| 2174 | if (sys2memblk) { |
| 2175 | error_propagate(errp, local_err); |
| 2176 | } else { |
| 2177 | result->response = |
| 2178 | GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; |
| 2179 | } |
| 2180 | } |
| 2181 | goto out2; |
| 2182 | } |
| 2183 | |
| 2184 | if (sys2memblk) { |
| 2185 | char removable = '0'; |
| 2186 | |
| 2187 | mem_blk->online = (strncmp(status, "online", 6) == 0); |
| 2188 | |
| 2189 | ga_read_sysfs_file(dirfd, "removable", &removable, 1, &local_err); |
| 2190 | if (local_err) { |
Veres Lajos | 67cc32e | 2015-09-08 22:45:14 +0100 | [diff] [blame] | 2191 | /* if no 'removable' file, it doesn't support offline mem blk */ |
zhanghailiang | bd240fc | 2015-01-22 10:40:03 +0800 | [diff] [blame] | 2192 | if (errno == ENOENT) { |
| 2193 | error_free(local_err); |
| 2194 | mem_blk->can_offline = false; |
| 2195 | } else { |
| 2196 | error_propagate(errp, local_err); |
| 2197 | } |
| 2198 | } else { |
| 2199 | mem_blk->can_offline = (removable != '0'); |
| 2200 | } |
| 2201 | } else { |
| 2202 | if (mem_blk->online != (strncmp(status, "online", 6) == 0)) { |
Marc-André Lureau | 7064024 | 2017-05-26 14:13:37 +0400 | [diff] [blame] | 2203 | const char *new_state = mem_blk->online ? "online" : "offline"; |
zhanghailiang | bd240fc | 2015-01-22 10:40:03 +0800 | [diff] [blame] | 2204 | |
| 2205 | ga_write_sysfs_file(dirfd, "state", new_state, strlen(new_state), |
| 2206 | &local_err); |
zhanghailiang | bd240fc | 2015-01-22 10:40:03 +0800 | [diff] [blame] | 2207 | if (local_err) { |
| 2208 | error_free(local_err); |
| 2209 | result->response = |
| 2210 | GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; |
| 2211 | goto out2; |
| 2212 | } |
| 2213 | |
| 2214 | result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_SUCCESS; |
| 2215 | result->has_error_code = false; |
| 2216 | } /* otherwise pretend successful re-(on|off)-lining */ |
| 2217 | } |
| 2218 | g_free(status); |
| 2219 | close(dirfd); |
| 2220 | return; |
| 2221 | |
| 2222 | out2: |
| 2223 | g_free(status); |
| 2224 | close(dirfd); |
| 2225 | out1: |
| 2226 | if (!sys2memblk) { |
| 2227 | result->has_error_code = true; |
| 2228 | result->error_code = errno; |
| 2229 | } |
| 2230 | } |
| 2231 | |
zhanghailiang | a065aaa | 2015-01-22 10:40:02 +0800 | [diff] [blame] | 2232 | GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) |
| 2233 | { |
zhanghailiang | bd240fc | 2015-01-22 10:40:03 +0800 | [diff] [blame] | 2234 | GuestMemoryBlockList *head, **link; |
| 2235 | Error *local_err = NULL; |
| 2236 | struct dirent *de; |
| 2237 | DIR *dp; |
| 2238 | |
| 2239 | head = NULL; |
| 2240 | link = &head; |
| 2241 | |
| 2242 | dp = opendir("/sys/devices/system/memory/"); |
| 2243 | if (!dp) { |
Michael Roth | f693fe6 | 2015-10-19 16:38:25 -0500 | [diff] [blame] | 2244 | /* it's ok if this happens to be a system that doesn't expose |
| 2245 | * memory blocks via sysfs, but otherwise we should report |
| 2246 | * an error |
| 2247 | */ |
| 2248 | if (errno != ENOENT) { |
| 2249 | error_setg_errno(errp, errno, "Can't open directory" |
Markus Armbruster | 9af9e0f | 2015-12-18 16:35:19 +0100 | [diff] [blame] | 2250 | "\"/sys/devices/system/memory/\""); |
Michael Roth | f693fe6 | 2015-10-19 16:38:25 -0500 | [diff] [blame] | 2251 | } |
zhanghailiang | bd240fc | 2015-01-22 10:40:03 +0800 | [diff] [blame] | 2252 | return NULL; |
| 2253 | } |
| 2254 | |
| 2255 | /* Note: the phys_index of memory block may be discontinuous, |
| 2256 | * this is because a memblk is the unit of the Sparse Memory design, which |
| 2257 | * allows discontinuous memory ranges (ex. NUMA), so here we should |
| 2258 | * traverse the memory block directory. |
| 2259 | */ |
| 2260 | while ((de = readdir(dp)) != NULL) { |
| 2261 | GuestMemoryBlock *mem_blk; |
| 2262 | GuestMemoryBlockList *entry; |
| 2263 | |
| 2264 | if ((strncmp(de->d_name, "memory", 6) != 0) || |
| 2265 | !(de->d_type & DT_DIR)) { |
| 2266 | continue; |
| 2267 | } |
| 2268 | |
| 2269 | mem_blk = g_malloc0(sizeof *mem_blk); |
| 2270 | /* The d_name is "memoryXXX", phys_index is block id, same as XXX */ |
| 2271 | mem_blk->phys_index = strtoul(&de->d_name[6], NULL, 10); |
| 2272 | mem_blk->has_can_offline = true; /* lolspeak ftw */ |
| 2273 | transfer_memory_block(mem_blk, true, NULL, &local_err); |
| 2274 | |
| 2275 | entry = g_malloc0(sizeof *entry); |
| 2276 | entry->value = mem_blk; |
| 2277 | |
| 2278 | *link = entry; |
| 2279 | link = &entry->next; |
| 2280 | } |
| 2281 | |
| 2282 | closedir(dp); |
| 2283 | if (local_err == NULL) { |
| 2284 | /* there's no guest with zero memory blocks */ |
| 2285 | if (head == NULL) { |
| 2286 | error_setg(errp, "guest reported zero memory blocks!"); |
| 2287 | } |
| 2288 | return head; |
| 2289 | } |
| 2290 | |
| 2291 | qapi_free_GuestMemoryBlockList(head); |
| 2292 | error_propagate(errp, local_err); |
zhanghailiang | a065aaa | 2015-01-22 10:40:02 +0800 | [diff] [blame] | 2293 | return NULL; |
| 2294 | } |
| 2295 | |
| 2296 | GuestMemoryBlockResponseList * |
| 2297 | qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) |
| 2298 | { |
zhanghailiang | 32ca792 | 2015-01-22 10:40:04 +0800 | [diff] [blame] | 2299 | GuestMemoryBlockResponseList *head, **link; |
| 2300 | Error *local_err = NULL; |
| 2301 | |
| 2302 | head = NULL; |
| 2303 | link = &head; |
| 2304 | |
| 2305 | while (mem_blks != NULL) { |
| 2306 | GuestMemoryBlockResponse *result; |
| 2307 | GuestMemoryBlockResponseList *entry; |
| 2308 | GuestMemoryBlock *current_mem_blk = mem_blks->value; |
| 2309 | |
| 2310 | result = g_malloc0(sizeof(*result)); |
| 2311 | result->phys_index = current_mem_blk->phys_index; |
| 2312 | transfer_memory_block(current_mem_blk, false, result, &local_err); |
| 2313 | if (local_err) { /* should never happen */ |
| 2314 | goto err; |
| 2315 | } |
| 2316 | entry = g_malloc0(sizeof *entry); |
| 2317 | entry->value = result; |
| 2318 | |
| 2319 | *link = entry; |
| 2320 | link = &entry->next; |
| 2321 | mem_blks = mem_blks->next; |
| 2322 | } |
| 2323 | |
| 2324 | return head; |
| 2325 | err: |
| 2326 | qapi_free_GuestMemoryBlockResponseList(head); |
| 2327 | error_propagate(errp, local_err); |
zhanghailiang | a065aaa | 2015-01-22 10:40:02 +0800 | [diff] [blame] | 2328 | return NULL; |
| 2329 | } |
| 2330 | |
| 2331 | GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) |
| 2332 | { |
zhanghailiang | ef82b60 | 2015-01-22 10:40:05 +0800 | [diff] [blame] | 2333 | Error *local_err = NULL; |
| 2334 | char *dirpath; |
| 2335 | int dirfd; |
| 2336 | char *buf; |
| 2337 | GuestMemoryBlockInfo *info; |
| 2338 | |
| 2339 | dirpath = g_strdup_printf("/sys/devices/system/memory/"); |
| 2340 | dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); |
| 2341 | if (dirfd == -1) { |
| 2342 | error_setg_errno(errp, errno, "open(\"%s\")", dirpath); |
| 2343 | g_free(dirpath); |
| 2344 | return NULL; |
| 2345 | } |
| 2346 | g_free(dirpath); |
| 2347 | |
| 2348 | buf = g_malloc0(20); |
| 2349 | ga_read_sysfs_file(dirfd, "block_size_bytes", buf, 20, &local_err); |
Shannon Zhao | 8ce1ee4 | 2015-03-14 17:52:15 +0800 | [diff] [blame] | 2350 | close(dirfd); |
zhanghailiang | ef82b60 | 2015-01-22 10:40:05 +0800 | [diff] [blame] | 2351 | if (local_err) { |
| 2352 | g_free(buf); |
| 2353 | error_propagate(errp, local_err); |
| 2354 | return NULL; |
| 2355 | } |
| 2356 | |
| 2357 | info = g_new0(GuestMemoryBlockInfo, 1); |
| 2358 | info->size = strtol(buf, NULL, 16); /* the unit is bytes */ |
| 2359 | |
| 2360 | g_free(buf); |
| 2361 | |
| 2362 | return info; |
zhanghailiang | a065aaa | 2015-01-22 10:40:02 +0800 | [diff] [blame] | 2363 | } |
| 2364 | |
Michael Roth | e72c3f2 | 2012-03-25 13:59:41 -0500 | [diff] [blame] | 2365 | #else /* defined(__linux__) */ |
| 2366 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 2367 | void qmp_guest_suspend_disk(Error **errp) |
Michael Roth | e72c3f2 | 2012-03-25 13:59:41 -0500 | [diff] [blame] | 2368 | { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2369 | error_setg(errp, QERR_UNSUPPORTED); |
Michael Roth | e72c3f2 | 2012-03-25 13:59:41 -0500 | [diff] [blame] | 2370 | } |
| 2371 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 2372 | void qmp_guest_suspend_ram(Error **errp) |
Michael Roth | e72c3f2 | 2012-03-25 13:59:41 -0500 | [diff] [blame] | 2373 | { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2374 | error_setg(errp, QERR_UNSUPPORTED); |
Michael Roth | e72c3f2 | 2012-03-25 13:59:41 -0500 | [diff] [blame] | 2375 | } |
| 2376 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 2377 | void qmp_guest_suspend_hybrid(Error **errp) |
Michael Roth | e72c3f2 | 2012-03-25 13:59:41 -0500 | [diff] [blame] | 2378 | { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2379 | error_setg(errp, QERR_UNSUPPORTED); |
Michael Roth | e72c3f2 | 2012-03-25 13:59:41 -0500 | [diff] [blame] | 2380 | } |
| 2381 | |
| 2382 | GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) |
| 2383 | { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2384 | error_setg(errp, QERR_UNSUPPORTED); |
Michael Roth | e72c3f2 | 2012-03-25 13:59:41 -0500 | [diff] [blame] | 2385 | return NULL; |
| 2386 | } |
| 2387 | |
Laszlo Ersek | d2baff6 | 2013-03-06 22:59:30 +0100 | [diff] [blame] | 2388 | GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) |
| 2389 | { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2390 | error_setg(errp, QERR_UNSUPPORTED); |
Laszlo Ersek | d2baff6 | 2013-03-06 22:59:30 +0100 | [diff] [blame] | 2391 | return NULL; |
| 2392 | } |
| 2393 | |
Laszlo Ersek | cbb65fc | 2013-03-06 22:59:31 +0100 | [diff] [blame] | 2394 | int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) |
| 2395 | { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2396 | error_setg(errp, QERR_UNSUPPORTED); |
Laszlo Ersek | cbb65fc | 2013-03-06 22:59:31 +0100 | [diff] [blame] | 2397 | return -1; |
| 2398 | } |
| 2399 | |
Daniel P. Berrange | 215a277 | 2015-02-11 11:26:12 +0000 | [diff] [blame] | 2400 | void qmp_guest_set_user_password(const char *username, |
| 2401 | const char *password, |
| 2402 | bool crypted, |
| 2403 | Error **errp) |
| 2404 | { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2405 | error_setg(errp, QERR_UNSUPPORTED); |
Daniel P. Berrange | 215a277 | 2015-02-11 11:26:12 +0000 | [diff] [blame] | 2406 | } |
| 2407 | |
zhanghailiang | a065aaa | 2015-01-22 10:40:02 +0800 | [diff] [blame] | 2408 | GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) |
| 2409 | { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2410 | error_setg(errp, QERR_UNSUPPORTED); |
zhanghailiang | a065aaa | 2015-01-22 10:40:02 +0800 | [diff] [blame] | 2411 | return NULL; |
| 2412 | } |
| 2413 | |
| 2414 | GuestMemoryBlockResponseList * |
| 2415 | qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) |
| 2416 | { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2417 | error_setg(errp, QERR_UNSUPPORTED); |
zhanghailiang | a065aaa | 2015-01-22 10:40:02 +0800 | [diff] [blame] | 2418 | return NULL; |
| 2419 | } |
| 2420 | |
| 2421 | GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) |
| 2422 | { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2423 | error_setg(errp, QERR_UNSUPPORTED); |
zhanghailiang | a065aaa | 2015-01-22 10:40:02 +0800 | [diff] [blame] | 2424 | return NULL; |
| 2425 | } |
| 2426 | |
Michael Roth | e72c3f2 | 2012-03-25 13:59:41 -0500 | [diff] [blame] | 2427 | #endif |
| 2428 | |
Michael Roth | d35d4cb | 2012-04-13 21:07:36 -0500 | [diff] [blame] | 2429 | #if !defined(CONFIG_FSFREEZE) |
| 2430 | |
Tomoki Sekiyama | 46d4c57 | 2014-06-30 17:51:34 -0400 | [diff] [blame] | 2431 | GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) |
| 2432 | { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2433 | error_setg(errp, QERR_UNSUPPORTED); |
Tomoki Sekiyama | 46d4c57 | 2014-06-30 17:51:34 -0400 | [diff] [blame] | 2434 | return NULL; |
| 2435 | } |
| 2436 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 2437 | GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) |
Michael Roth | d35d4cb | 2012-04-13 21:07:36 -0500 | [diff] [blame] | 2438 | { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2439 | error_setg(errp, QERR_UNSUPPORTED); |
Michael Roth | d35d4cb | 2012-04-13 21:07:36 -0500 | [diff] [blame] | 2440 | |
| 2441 | return 0; |
| 2442 | } |
| 2443 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 2444 | int64_t qmp_guest_fsfreeze_freeze(Error **errp) |
Michael Roth | d35d4cb | 2012-04-13 21:07:36 -0500 | [diff] [blame] | 2445 | { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2446 | error_setg(errp, QERR_UNSUPPORTED); |
Michael Roth | d35d4cb | 2012-04-13 21:07:36 -0500 | [diff] [blame] | 2447 | |
| 2448 | return 0; |
| 2449 | } |
| 2450 | |
Tomoki Sekiyama | e99bce2 | 2014-06-30 17:51:27 -0400 | [diff] [blame] | 2451 | int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, |
| 2452 | strList *mountpoints, |
| 2453 | Error **errp) |
| 2454 | { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2455 | error_setg(errp, QERR_UNSUPPORTED); |
Tomoki Sekiyama | e99bce2 | 2014-06-30 17:51:27 -0400 | [diff] [blame] | 2456 | |
| 2457 | return 0; |
| 2458 | } |
| 2459 | |
Markus Armbruster | 77dbc81 | 2014-05-02 13:26:30 +0200 | [diff] [blame] | 2460 | int64_t qmp_guest_fsfreeze_thaw(Error **errp) |
Michael Roth | d35d4cb | 2012-04-13 21:07:36 -0500 | [diff] [blame] | 2461 | { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2462 | error_setg(errp, QERR_UNSUPPORTED); |
Michael Roth | d35d4cb | 2012-04-13 21:07:36 -0500 | [diff] [blame] | 2463 | |
| 2464 | return 0; |
| 2465 | } |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 2466 | #endif /* CONFIG_FSFREEZE */ |
Michael Roth | d35d4cb | 2012-04-13 21:07:36 -0500 | [diff] [blame] | 2467 | |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 2468 | #if !defined(CONFIG_FSTRIM) |
Justin Ossevoort | e82855d | 2015-05-11 08:58:45 +0200 | [diff] [blame] | 2469 | GuestFilesystemTrimResponse * |
| 2470 | qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 2471 | { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2472 | error_setg(errp, QERR_UNSUPPORTED); |
Justin Ossevoort | e82855d | 2015-05-11 08:58:45 +0200 | [diff] [blame] | 2473 | return NULL; |
Paolo Bonzini | eab5fd5 | 2012-06-13 07:41:28 +0200 | [diff] [blame] | 2474 | } |
Michael Roth | d35d4cb | 2012-04-13 21:07:36 -0500 | [diff] [blame] | 2475 | #endif |
| 2476 | |
Tomoki Sekiyama | 1281c08 | 2014-06-30 17:51:40 -0400 | [diff] [blame] | 2477 | /* add unsupported commands to the blacklist */ |
| 2478 | GList *ga_command_blacklist_init(GList *blacklist) |
| 2479 | { |
| 2480 | #if !defined(__linux__) |
| 2481 | { |
| 2482 | const char *list[] = { |
| 2483 | "guest-suspend-disk", "guest-suspend-ram", |
| 2484 | "guest-suspend-hybrid", "guest-network-get-interfaces", |
zhanghailiang | 0dd38a0 | 2015-01-22 10:40:06 +0800 | [diff] [blame] | 2485 | "guest-get-vcpus", "guest-set-vcpus", |
| 2486 | "guest-get-memory-blocks", "guest-set-memory-blocks", |
| 2487 | "guest-get-memory-block-size", NULL}; |
Tomoki Sekiyama | 1281c08 | 2014-06-30 17:51:40 -0400 | [diff] [blame] | 2488 | char **p = (char **)list; |
| 2489 | |
| 2490 | while (*p) { |
Marc-André Lureau | 4bca81c | 2015-08-27 01:34:50 +0200 | [diff] [blame] | 2491 | blacklist = g_list_append(blacklist, g_strdup(*p++)); |
Tomoki Sekiyama | 1281c08 | 2014-06-30 17:51:40 -0400 | [diff] [blame] | 2492 | } |
| 2493 | } |
| 2494 | #endif |
| 2495 | |
| 2496 | #if !defined(CONFIG_FSFREEZE) |
| 2497 | { |
| 2498 | const char *list[] = { |
| 2499 | "guest-get-fsinfo", "guest-fsfreeze-status", |
| 2500 | "guest-fsfreeze-freeze", "guest-fsfreeze-freeze-list", |
| 2501 | "guest-fsfreeze-thaw", "guest-get-fsinfo", NULL}; |
| 2502 | char **p = (char **)list; |
| 2503 | |
| 2504 | while (*p) { |
Marc-André Lureau | 4bca81c | 2015-08-27 01:34:50 +0200 | [diff] [blame] | 2505 | blacklist = g_list_append(blacklist, g_strdup(*p++)); |
Tomoki Sekiyama | 1281c08 | 2014-06-30 17:51:40 -0400 | [diff] [blame] | 2506 | } |
| 2507 | } |
| 2508 | #endif |
| 2509 | |
| 2510 | #if !defined(CONFIG_FSTRIM) |
Marc-André Lureau | 4bca81c | 2015-08-27 01:34:50 +0200 | [diff] [blame] | 2511 | blacklist = g_list_append(blacklist, g_strdup("guest-fstrim")); |
Tomoki Sekiyama | 1281c08 | 2014-06-30 17:51:40 -0400 | [diff] [blame] | 2512 | #endif |
| 2513 | |
| 2514 | return blacklist; |
| 2515 | } |
| 2516 | |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 2517 | /* register init/cleanup routines for stateful command groups */ |
| 2518 | void ga_command_state_init(GAState *s, GACommandState *cs) |
| 2519 | { |
Anthony Liguori | 7006b9c | 2011-07-22 14:14:17 -0500 | [diff] [blame] | 2520 | #if defined(CONFIG_FSFREEZE) |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 2521 | ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup); |
Anthony Liguori | 7006b9c | 2011-07-22 14:14:17 -0500 | [diff] [blame] | 2522 | #endif |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 2523 | } |
Vinzenz Feenstra | 161a56a | 2017-04-19 11:26:15 +0200 | [diff] [blame] | 2524 | |
Tomáš Golembiovský | 05eb057 | 2017-07-17 15:58:33 +0200 | [diff] [blame] | 2525 | #ifdef HAVE_UTMPX |
| 2526 | |
Vinzenz Feenstra | 161a56a | 2017-04-19 11:26:15 +0200 | [diff] [blame] | 2527 | #define QGA_MICRO_SECOND_TO_SECOND 1000000 |
| 2528 | |
| 2529 | static double ga_get_login_time(struct utmpx *user_info) |
| 2530 | { |
| 2531 | double seconds = (double)user_info->ut_tv.tv_sec; |
| 2532 | double useconds = (double)user_info->ut_tv.tv_usec; |
| 2533 | useconds /= QGA_MICRO_SECOND_TO_SECOND; |
| 2534 | return seconds + useconds; |
| 2535 | } |
| 2536 | |
| 2537 | GuestUserList *qmp_guest_get_users(Error **err) |
| 2538 | { |
| 2539 | GHashTable *cache = NULL; |
| 2540 | GuestUserList *head = NULL, *cur_item = NULL; |
| 2541 | struct utmpx *user_info = NULL; |
| 2542 | gpointer value = NULL; |
| 2543 | GuestUser *user = NULL; |
| 2544 | GuestUserList *item = NULL; |
| 2545 | double login_time = 0; |
| 2546 | |
| 2547 | cache = g_hash_table_new(g_str_hash, g_str_equal); |
| 2548 | setutxent(); |
| 2549 | |
| 2550 | for (;;) { |
| 2551 | user_info = getutxent(); |
| 2552 | if (user_info == NULL) { |
| 2553 | break; |
| 2554 | } else if (user_info->ut_type != USER_PROCESS) { |
| 2555 | continue; |
| 2556 | } else if (g_hash_table_contains(cache, user_info->ut_user)) { |
| 2557 | value = g_hash_table_lookup(cache, user_info->ut_user); |
| 2558 | user = (GuestUser *)value; |
| 2559 | login_time = ga_get_login_time(user_info); |
| 2560 | /* We're ensuring the earliest login time to be sent */ |
| 2561 | if (login_time < user->login_time) { |
| 2562 | user->login_time = login_time; |
| 2563 | } |
| 2564 | continue; |
| 2565 | } |
| 2566 | |
| 2567 | item = g_new0(GuestUserList, 1); |
| 2568 | item->value = g_new0(GuestUser, 1); |
| 2569 | item->value->user = g_strdup(user_info->ut_user); |
| 2570 | item->value->login_time = ga_get_login_time(user_info); |
| 2571 | |
| 2572 | g_hash_table_insert(cache, item->value->user, item->value); |
| 2573 | |
| 2574 | if (!cur_item) { |
| 2575 | head = cur_item = item; |
| 2576 | } else { |
| 2577 | cur_item->next = item; |
| 2578 | cur_item = item; |
| 2579 | } |
| 2580 | } |
| 2581 | endutxent(); |
| 2582 | g_hash_table_destroy(cache); |
| 2583 | return head; |
| 2584 | } |
Tomáš Golembiovský | 05eb057 | 2017-07-17 15:58:33 +0200 | [diff] [blame] | 2585 | |
| 2586 | #else |
| 2587 | |
| 2588 | GuestUserList *qmp_guest_get_users(Error **errp) |
| 2589 | { |
| 2590 | error_setg(errp, QERR_UNSUPPORTED); |
| 2591 | return NULL; |
| 2592 | } |
| 2593 | |
| 2594 | #endif |