diff options
Diffstat (limited to 'test/linux-generic/validation/api/shmem/shmem_linux.c')
| -rw-r--r-- | test/linux-generic/validation/api/shmem/shmem_linux.c | 319 |
1 files changed, 0 insertions, 319 deletions
diff --git a/test/linux-generic/validation/api/shmem/shmem_linux.c b/test/linux-generic/validation/api/shmem/shmem_linux.c deleted file mode 100644 index fe11a7db9..000000000 --- a/test/linux-generic/validation/api/shmem/shmem_linux.c +++ /dev/null @@ -1,319 +0,0 @@ -/* Copyright (c) 2016, Linaro Limited - * All rights reserved. - * - * SPDX-License-Identifier: BSD-3-Clause - */ - -/* this test makes sure that odp shared memory created with the ODP_SHM_PROC - * flag is visible under linux, and checks that memory created with the - * ODP_SHM_EXPORT flag is visible by other ODP instances. - * It therefore checks both that the link - * name under /dev/shm is correct, and also checks that the memory contents - * is indeed shared. - * we want: - * -the odp test to run using C UNIT - * -the main process to return the correct return code. - * (for the autotools test harness) - * - * To achieve this, the flow of operations is as follows: - * - * linux process (main, non odp) | - * (shmem_linux.c) | - * | - * | - * | - * main() | - * forks odp_app1 process | - * wait for named pipe creation | - * | - * | ODP_APP1 process - * | (shmem_odp1.c) - * | - * | allocate shmem - * | populate shmem - * | create named pipe - * | wait for test report in fifo... - * read shared memory | - * check if memory contents is OK | - * If not OK, write "F" in fifo and | - * exit with failure code. | ------------------- - * | - * forks odp app2 process | ODP APP2 process - * wait for child terminaison & status| (shmem_odp2.c) - * | lookup ODP_APP1 shared memory, - * | check if memory contents is OK - * | Exit(0) on success, exit(1) on fail - * If child failed, write "F" in fifo | - * exit with failure code. | ------------------- - * | - * OK, write "S" in fifo, | - * wait for child terminaison & status| - * terminate with same status as child| - * | ODP APP1 process - * | (shmem_odp1.c) - * | - * | ...(continued) - * | read S(success) or F(fail) from fifo - * | report success or failure to C-Unit - * | Exit(0) on success, exit(1) on fail - * wait for child terminaison & status | - * terminate with same status as child | - * | - * \|/ - * time - */ - -#include <stdint.h> -#include <unistd.h> -#include <stdlib.h> -#include <string.h> -#include <fcntl.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <linux/limits.h> -#include <stdio.h> -#include <errno.h> -#include <sys/mman.h> -#include <libgen.h> -#include <linux/limits.h> -#include <inttypes.h> -#include <pwd.h> -#include <stdlib.h> -#include "shmem_linux.h" -#include "shmem_common.h" - -#define ODP_APP1_NAME "shmem_odp1" /* name of the odp1 program, in this dir */ -#define ODP_APP2_NAME "shmem_odp2" /* name of the odp2 program, in this dir */ -/* odp-<pid>-shm-<name> */ -#define DEVNAME_DEFAULT_DIR "/dev/shm" -#define DEVNAME_FMT "%s/%d/odp-%" PRIu64 "-shm-%s" -#define MAX_FIFO_WAIT 30 /* Max time waiting for the fifo (sec) */ - -/* - * read the attributes of a externaly shared mem object: - * input: ext_odp_pid, blockname: the remote ODP instance and the exported - * block name to be searched. - * Output: filename: the memory block underlaying file to be opened - * (the given buffer should be big enough i.e. at - * least ISHM_FILENAME_MAXLEN bytes) - * The 3 following parameters are really here for debug - * as they are really meaningles in a non-odp process: - * len: the block real length (bytes, multiple of page sz) - * flags: the _ishm flags setting the block was created with - * align: the alignement setting the block was created with - * - * return 0 on success, non zero on error - */ -static int read_shmem_attribues(uint64_t ext_odp_pid, const char *blockname, - char *filename, uint64_t *len, - uint32_t *flags, uint64_t *user_len, - uint32_t *user_flags, uint32_t *align) -{ - char shm_attr_filename[PATH_MAX]; - FILE *export_file; - char *shm_dir = getenv("ODP_SHM_DIR"); - - sprintf(shm_attr_filename, DEVNAME_FMT, - shm_dir ? shm_dir : DEVNAME_DEFAULT_DIR, - getuid(), - ext_odp_pid, blockname); - - /* O_CREAT flag not given => failure if shm_attr_filename does not - * already exist */ - export_file = fopen(shm_attr_filename, "r"); - if (export_file == NULL) - return -1; - - if (fscanf(export_file, "ODP exported shm block info: ") != 0) - goto export_file_read_err; - - if (fscanf(export_file, "ishm_blockname: %*s ") != 0) - goto export_file_read_err; - - if (fscanf(export_file, "file: %s ", filename) != 1) - goto export_file_read_err; - - if (fscanf(export_file, "length: %" PRIu64 " ", len) != 1) - goto export_file_read_err; - - if (fscanf(export_file, "flags: %" PRIu32 " ", flags) != 1) - goto export_file_read_err; - - if (fscanf(export_file, "user_length: %" PRIu64 " ", user_len) != 1) - goto export_file_read_err; - - if (fscanf(export_file, "user_flags: %" PRIu32 " ", user_flags) != 1) - goto export_file_read_err; - - if (fscanf(export_file, "align: %" PRIu32 " ", align) != 1) - goto export_file_read_err; - - fclose(export_file); - return 0; - -export_file_read_err: - fclose(export_file); - return -1; -} - -void test_success(char *fifo_name, int fd, pid_t odp_app) -{ - int status; - int nb_char; - char result = TEST_SUCCESS; - /* write "Success" to the FIFO */ - nb_char = write(fd, &result, sizeof(char)); - close(fd); - /* wait for the odp app1 to terminate */ - waitpid(odp_app, &status, 0); - /* if the write failed, report an error anyway */ - if (nb_char != 1) - status = 1; - unlink(fifo_name); - exit(status); /* the status reported by the odp side is returned */ -} - -void test_failure(char *fifo_name, int fd, pid_t odp_app) -{ - int status; - char result; - - int nb_char __attribute__((unused)); /*ignored: we fail anyway */ - - result = TEST_FAILURE; - /* write "Failure" to the FIFO */ - nb_char = write(fd, &result, sizeof(char)); - close(fd); - /* wait for the odp app1 to terminate */ - waitpid(odp_app, &status, 0); - unlink(fifo_name); - exit(1); /* error */ -} - -int main(int argc __attribute__((unused)), char *argv[]) -{ - char prg_name[PATH_MAX]; - char odp_name1[PATH_MAX]; - char odp_name2[PATH_MAX]; - int nb_sec; - int size; - pid_t odp_app1; - pid_t odp_app2; - char *odp_params1 = NULL; - char *odp_params2[3]; - char pid1[10]; - char fifo_name[PATH_MAX]; /* fifo for linux->odp feedback */ - int fifo_fd = -1; - char shm_filename[PATH_MAX];/* shared mem device name, under /dev/shm */ - uint64_t len; - uint32_t flags; - uint64_t user_len; - uint32_t user_flags; - uint32_t align; - int shm_fd; - test_shared_linux_data_t *addr; - int app2_status; - uid_t uid = getuid(); - char *shm_dir = getenv("ODP_SHM_DIR"); - - /* odp_app1 is in the same directory as this file: */ - strncpy(prg_name, argv[0], PATH_MAX - 1); - sprintf(odp_name1, "%s/%s", dirname(prg_name), ODP_APP1_NAME); - - /* start the ODP application: */ - odp_app1 = fork(); - if (odp_app1 < 0) /* error */ - exit(1); - - if (odp_app1 == 0) { /* child */ - execv(odp_name1, &odp_params1); /* no return unless error */ - fprintf(stderr, "execv failed: %s\n", strerror(errno)); - } - - /* wait max 30 sec for the fifo to be created by the ODP side. - * Just die if time expire as there is no fifo to communicate - * through... */ - sprintf(fifo_name, FIFO_NAME_FMT, - shm_dir ? shm_dir : DEFAULT_SHM_DIR, - uid, odp_app1); - for (nb_sec = 0; nb_sec < MAX_FIFO_WAIT; nb_sec++) { - fifo_fd = open(fifo_name, O_WRONLY); - if (fifo_fd >= 0) - break; - sleep(1); - } - if (fifo_fd < 0) - exit(1); - printf("pipe found\n"); - - /* the linux named pipe has now been found, meaning that the - * ODP application is up and running, and has allocated shmem. - * check to see if linux can see the created shared memory: */ - - /* read the shared memory attributes (includes the shm filename): */ - if (read_shmem_attribues(odp_app1, SHM_NAME, - shm_filename, &len, &flags, - &user_len, &user_flags, &align) != 0) { - printf("erorr read_shmem_attribues\n"); - test_failure(fifo_name, fifo_fd, odp_app1); - } - - /* open the shm filename (which is either on /dev/shm/ or on hugetlbfs) - * O_CREAT flag not given => failure if shm_devname does not already - * exist */ - shm_fd = open(shm_filename, O_RDONLY, - S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH); - if (shm_fd == -1) { - fprintf(stderr, "unable to open %s\n", shm_filename); - test_failure(fifo_name, fifo_fd, odp_app1); /* no return */ - } - - /* linux ODP guarantees page size alignement. Larger alignment may - * fail as 2 different processes will have fully unrelated - * virtual spaces. - */ - size = sizeof(test_shared_linux_data_t); - - addr = mmap(NULL, size, PROT_READ, MAP_SHARED, shm_fd, 0); - if (addr == MAP_FAILED) { - fprintf(stderr, "shmem_linux: map failed!\n"); - test_failure(fifo_name, fifo_fd, odp_app1); - } - - /* check that we see what the ODP application wrote in the memory */ - if ((addr->foo != TEST_SHARE_FOO) || (addr->bar != TEST_SHARE_BAR)) { - fprintf(stderr, "ERROR: addr->foo %x addr->bar %x\n", - addr->foo, addr->bar); - test_failure(fifo_name, fifo_fd, odp_app1); /* no return */ - } - - /* odp_app2 is in the same directory as this file: */ - strncpy(prg_name, argv[0], PATH_MAX - 1); - sprintf(odp_name2, "%s/%s", dirname(prg_name), ODP_APP2_NAME); - - /* start the second ODP application with pid of ODP_APP1 as parameter:*/ - sprintf(pid1, "%d", odp_app1); - odp_params2[0] = odp_name2; - odp_params2[1] = pid1; - odp_params2[2] = NULL; - odp_app2 = fork(); - if (odp_app2 < 0) /* error */ - exit(1); - - if (odp_app2 == 0) { /* child */ - execv(odp_name2, odp_params2); /* no return unless error */ - fprintf(stderr, "execv failed: %s\n", strerror(errno)); - } - - /* wait for the second ODP application to terminate: - * status is OK if that second ODP application could see the - * memory shared by the first one. */ - waitpid(odp_app2, &app2_status, 0); - - if (app2_status) - test_failure(fifo_name, fifo_fd, odp_app1); /* no return */ - - /* everything looked good: */ - test_success(fifo_name, fifo_fd, odp_app1); -} |