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authorLinus Torvalds <torvalds@linux-foundation.org>2013-05-01 07:21:43 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-05-01 07:21:43 -0700
commit08d76760832993050ad8c25e63b56773ef2ca303 (patch)
treeabdcf148dfe43cd49f30f204f1dac6978107a508 /kernel
parent5f56886521d6ddd3648777fae44d82382dd8c87f (diff)
parent99e621f796d7f0341a51e8cdf32b81663b10b448 (diff)
downloadlinux-linaro-stable-08d76760832993050ad8c25e63b56773ef2ca303.tar.gz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull compat cleanup from Al Viro: "Mostly about syscall wrappers this time; there will be another pile with patches in the same general area from various people, but I'd rather push those after both that and vfs.git pile are in." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: syscalls.h: slightly reduce the jungles of macros get rid of union semop in sys_semctl(2) arguments make do_mremap() static sparc: no need to sign-extend in sync_file_range() wrapper ppc compat wrappers for add_key(2) and request_key(2) are pointless x86: trim sys_ia32.h x86: sys32_kill and sys32_mprotect are pointless get rid of compat_sys_semctl() and friends in case of ARCH_WANT_OLD_COMPAT_IPC merge compat sys_ipc instances consolidate compat lookup_dcookie() convert vmsplice to COMPAT_SYSCALL_DEFINE switch getrusage() to COMPAT_SYSCALL_DEFINE switch epoll_pwait to COMPAT_SYSCALL_DEFINE convert sendfile{,64} to COMPAT_SYSCALL_DEFINE switch signalfd{,4}() to COMPAT_SYSCALL_DEFINE make SYSCALL_DEFINE<n>-generated wrappers do asmlinkage_protect make HAVE_SYSCALL_WRAPPERS unconditional consolidate cond_syscall and SYSCALL_ALIAS declarations teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long get rid of duplicate logics in __SC_....[1-6] definitions
Diffstat (limited to 'kernel')
-rw-r--r--kernel/compat.c19
-rw-r--r--kernel/exit.c5
-rw-r--r--kernel/fork.c5
-rw-r--r--kernel/sys.c14
-rw-r--r--kernel/sys_ni.c3
-rw-r--r--kernel/uid16.c55
6 files changed, 28 insertions, 73 deletions
diff --git a/kernel/compat.c b/kernel/compat.c
index 1e8f1455117a..0a09e481b70b 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -516,25 +516,6 @@ int put_compat_rusage(const struct rusage *r, struct compat_rusage __user *ru)
return 0;
}
-asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru)
-{
- struct rusage r;
- int ret;
- mm_segment_t old_fs = get_fs();
-
- set_fs(KERNEL_DS);
- ret = sys_getrusage(who, (struct rusage __user *) &r);
- set_fs(old_fs);
-
- if (ret)
- return ret;
-
- if (put_compat_rusage(&r, ru))
- return -EFAULT;
-
- return 0;
-}
-
COMPAT_SYSCALL_DEFINE4(wait4,
compat_pid_t, pid,
compat_uint_t __user *, stat_addr,
diff --git a/kernel/exit.c b/kernel/exit.c
index 60bc027c61c3..6e3151ec900f 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1629,9 +1629,6 @@ SYSCALL_DEFINE5(waitid, int, which, pid_t, upid, struct siginfo __user *,
}
put_pid(pid);
-
- /* avoid REGPARM breakage on x86: */
- asmlinkage_protect(5, ret, which, upid, infop, options, ru);
return ret;
}
@@ -1669,8 +1666,6 @@ SYSCALL_DEFINE4(wait4, pid_t, upid, int __user *, stat_addr,
ret = do_wait(&wo);
put_pid(pid);
- /* avoid REGPARM breakage on x86: */
- asmlinkage_protect(4, ret, upid, stat_addr, options, ru);
return ret;
}
diff --git a/kernel/fork.c b/kernel/fork.c
index 339f60dfd62b..7d40687b1434 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1677,10 +1677,7 @@ SYSCALL_DEFINE5(clone, unsigned long, clone_flags, unsigned long, newsp,
int, tls_val)
#endif
{
- long ret = do_fork(clone_flags, newsp, 0, parent_tidptr, child_tidptr);
- asmlinkage_protect(5, ret, clone_flags, newsp,
- parent_tidptr, child_tidptr, tls_val);
- return ret;
+ return do_fork(clone_flags, newsp, 0, parent_tidptr, child_tidptr);
}
#endif
diff --git a/kernel/sys.c b/kernel/sys.c
index afd0f7e125c9..b95d3c72ba21 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1851,6 +1851,20 @@ SYSCALL_DEFINE2(getrusage, int, who, struct rusage __user *, ru)
return getrusage(current, who, ru);
}
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE2(getrusage, int, who, struct compat_rusage __user *, ru)
+{
+ struct rusage r;
+
+ if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN &&
+ who != RUSAGE_THREAD)
+ return -EINVAL;
+
+ k_getrusage(current, who, &r);
+ return put_compat_rusage(&r, ru);
+}
+#endif
+
SYSCALL_DEFINE1(umask, int, mask)
{
mask = xchg(&current->fs->umask, mask & S_IRWXUGO);
diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
index 395084d4ce16..bfd6787b355a 100644
--- a/kernel/sys_ni.c
+++ b/kernel/sys_ni.c
@@ -20,6 +20,7 @@ cond_syscall(sys_quotactl);
cond_syscall(sys32_quotactl);
cond_syscall(sys_acct);
cond_syscall(sys_lookup_dcookie);
+cond_syscall(compat_sys_lookup_dcookie);
cond_syscall(sys_swapon);
cond_syscall(sys_swapoff);
cond_syscall(sys_kexec_load);
@@ -155,7 +156,7 @@ cond_syscall(compat_sys_process_vm_writev);
cond_syscall(sys_pciconfig_read);
cond_syscall(sys_pciconfig_write);
cond_syscall(sys_pciconfig_iobase);
-cond_syscall(sys32_ipc);
+cond_syscall(compat_sys_s390_ipc);
cond_syscall(ppc_rtas);
cond_syscall(sys_spu_run);
cond_syscall(sys_spu_create);
diff --git a/kernel/uid16.c b/kernel/uid16.c
index d7948eb10225..f6c83d7ef000 100644
--- a/kernel/uid16.c
+++ b/kernel/uid16.c
@@ -18,67 +18,43 @@
SYSCALL_DEFINE3(chown16, const char __user *, filename, old_uid_t, user, old_gid_t, group)
{
- long ret = sys_chown(filename, low2highuid(user), low2highgid(group));
- /* avoid REGPARM breakage on x86: */
- asmlinkage_protect(3, ret, filename, user, group);
- return ret;
+ return sys_chown(filename, low2highuid(user), low2highgid(group));
}
SYSCALL_DEFINE3(lchown16, const char __user *, filename, old_uid_t, user, old_gid_t, group)
{
- long ret = sys_lchown(filename, low2highuid(user), low2highgid(group));
- /* avoid REGPARM breakage on x86: */
- asmlinkage_protect(3, ret, filename, user, group);
- return ret;
+ return sys_lchown(filename, low2highuid(user), low2highgid(group));
}
SYSCALL_DEFINE3(fchown16, unsigned int, fd, old_uid_t, user, old_gid_t, group)
{
- long ret = sys_fchown(fd, low2highuid(user), low2highgid(group));
- /* avoid REGPARM breakage on x86: */
- asmlinkage_protect(3, ret, fd, user, group);
- return ret;
+ return sys_fchown(fd, low2highuid(user), low2highgid(group));
}
SYSCALL_DEFINE2(setregid16, old_gid_t, rgid, old_gid_t, egid)
{
- long ret = sys_setregid(low2highgid(rgid), low2highgid(egid));
- /* avoid REGPARM breakage on x86: */
- asmlinkage_protect(2, ret, rgid, egid);
- return ret;
+ return sys_setregid(low2highgid(rgid), low2highgid(egid));
}
SYSCALL_DEFINE1(setgid16, old_gid_t, gid)
{
- long ret = sys_setgid(low2highgid(gid));
- /* avoid REGPARM breakage on x86: */
- asmlinkage_protect(1, ret, gid);
- return ret;
+ return sys_setgid(low2highgid(gid));
}
SYSCALL_DEFINE2(setreuid16, old_uid_t, ruid, old_uid_t, euid)
{
- long ret = sys_setreuid(low2highuid(ruid), low2highuid(euid));
- /* avoid REGPARM breakage on x86: */
- asmlinkage_protect(2, ret, ruid, euid);
- return ret;
+ return sys_setreuid(low2highuid(ruid), low2highuid(euid));
}
SYSCALL_DEFINE1(setuid16, old_uid_t, uid)
{
- long ret = sys_setuid(low2highuid(uid));
- /* avoid REGPARM breakage on x86: */
- asmlinkage_protect(1, ret, uid);
- return ret;
+ return sys_setuid(low2highuid(uid));
}
SYSCALL_DEFINE3(setresuid16, old_uid_t, ruid, old_uid_t, euid, old_uid_t, suid)
{
- long ret = sys_setresuid(low2highuid(ruid), low2highuid(euid),
+ return sys_setresuid(low2highuid(ruid), low2highuid(euid),
low2highuid(suid));
- /* avoid REGPARM breakage on x86: */
- asmlinkage_protect(3, ret, ruid, euid, suid);
- return ret;
}
SYSCALL_DEFINE3(getresuid16, old_uid_t __user *, ruidp, old_uid_t __user *, euidp, old_uid_t __user *, suidp)
@@ -100,11 +76,8 @@ SYSCALL_DEFINE3(getresuid16, old_uid_t __user *, ruidp, old_uid_t __user *, euid
SYSCALL_DEFINE3(setresgid16, old_gid_t, rgid, old_gid_t, egid, old_gid_t, sgid)
{
- long ret = sys_setresgid(low2highgid(rgid), low2highgid(egid),
+ return sys_setresgid(low2highgid(rgid), low2highgid(egid),
low2highgid(sgid));
- /* avoid REGPARM breakage on x86: */
- asmlinkage_protect(3, ret, rgid, egid, sgid);
- return ret;
}
@@ -127,18 +100,12 @@ SYSCALL_DEFINE3(getresgid16, old_gid_t __user *, rgidp, old_gid_t __user *, egid
SYSCALL_DEFINE1(setfsuid16, old_uid_t, uid)
{
- long ret = sys_setfsuid(low2highuid(uid));
- /* avoid REGPARM breakage on x86: */
- asmlinkage_protect(1, ret, uid);
- return ret;
+ return sys_setfsuid(low2highuid(uid));
}
SYSCALL_DEFINE1(setfsgid16, old_gid_t, gid)
{
- long ret = sys_setfsgid(low2highgid(gid));
- /* avoid REGPARM breakage on x86: */
- asmlinkage_protect(1, ret, gid);
- return ret;
+ return sys_setfsgid(low2highgid(gid));
}
static int groups16_to_user(old_gid_t __user *grouplist,