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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-12-25 03:43:56 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2013-02-03 21:09:18 +0100 |
| commit | ad4b65a434bdd2ff37d095ab1ccd836203e985ba (patch) | |
| tree | 8e5582b9fe0e867b6ab8d317976b93d864f0bde1 /kernel/signal.c | |
| parent | sanitize rt_sigaction() situation a bit (diff) | |
| download | linux-ad4b65a434bdd2ff37d095ab1ccd836203e985ba.tar.xz linux-ad4b65a434bdd2ff37d095ab1ccd836203e985ba.zip | |
consolidate rt_sigsuspend()
* pull compat version alongside with the native one
* make little-endian compat variant just call the native
* don't bother with separate conditional for compat (both native and
compat are going to become unconditional very soon).
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'kernel/signal.c')
| -rw-r--r-- | kernel/signal.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index 00cd1ce998be..4a0934e03d5c 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -3352,7 +3352,29 @@ SYSCALL_DEFINE2(rt_sigsuspend, sigset_t __user *, unewset, size_t, sigsetsize) return -EFAULT; return sigsuspend(&newset); } -#endif /* __ARCH_WANT_SYS_RT_SIGSUSPEND */ + +#ifdef CONFIG_COMPAT +COMPAT_SYSCALL_DEFINE2(rt_sigsuspend, compat_sigset_t __user *, unewset, compat_size_t, sigsetsize) +{ +#ifdef __BIG_ENDIAN + sigset_t newset; + compat_sigset_t newset32; + + /* XXX: Don't preclude handling different sized sigset_t's. */ + if (sigsetsize != sizeof(sigset_t)) + return -EINVAL; + + if (copy_from_user(&newset32, unewset, sizeof(compat_sigset_t))) + return -EFAULT; + sigset_from_compat(&newset, &newset32); + return sigsuspend(&newset); +#else + /* on little-endian bitmaps don't care about granularity */ + return sys_rt_sigsuspend((sigset_t __user *)unewset, sigsetsize); +#endif +} +#endif +#endif __attribute__((weak)) const char *arch_vma_name(struct vm_area_struct *vma) { |