diff options
Diffstat (limited to 'fs')
-rw-r--r-- | fs/compat.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/fs/compat.c b/fs/compat.c index 9cf75df9b2bb..2487b83b18df 100644 --- a/fs/compat.c +++ b/fs/compat.c | |||
@@ -46,6 +46,7 @@ | |||
46 | #include <linux/tsacct_kern.h> | 46 | #include <linux/tsacct_kern.h> |
47 | #include <linux/security.h> | 47 | #include <linux/security.h> |
48 | #include <linux/highmem.h> | 48 | #include <linux/highmem.h> |
49 | #include <linux/signal.h> | ||
49 | #include <linux/poll.h> | 50 | #include <linux/poll.h> |
50 | #include <linux/mm.h> | 51 | #include <linux/mm.h> |
51 | #include <linux/eventpoll.h> | 52 | #include <linux/eventpoll.h> |
@@ -2199,3 +2200,28 @@ asmlinkage long compat_sys_epoll_pwait(int epfd, | |||
2199 | #endif /* TIF_RESTORE_SIGMASK */ | 2200 | #endif /* TIF_RESTORE_SIGMASK */ |
2200 | 2201 | ||
2201 | #endif /* CONFIG_EPOLL */ | 2202 | #endif /* CONFIG_EPOLL */ |
2203 | |||
2204 | #ifdef CONFIG_SIGNALFD | ||
2205 | |||
2206 | asmlinkage long compat_sys_signalfd(int ufd, | ||
2207 | const compat_sigset_t __user *sigmask, | ||
2208 | compat_size_t sigsetsize) | ||
2209 | { | ||
2210 | compat_sigset_t ss32; | ||
2211 | sigset_t tmp; | ||
2212 | sigset_t __user *ksigmask; | ||
2213 | |||
2214 | if (sigsetsize != sizeof(compat_sigset_t)) | ||
2215 | return -EINVAL; | ||
2216 | if (copy_from_user(&ss32, sigmask, sizeof(ss32))) | ||
2217 | return -EFAULT; | ||
2218 | sigset_from_compat(&tmp, &ss32); | ||
2219 | ksigmask = compat_alloc_user_space(sizeof(sigset_t)); | ||
2220 | if (copy_to_user(ksigmask, &tmp, sizeof(sigset_t))) | ||
2221 | return -EFAULT; | ||
2222 | |||
2223 | return sys_signalfd(ufd, ksigmask, sizeof(sigset_t)); | ||
2224 | } | ||
2225 | |||
2226 | #endif /* CONFIG_SIGNALFD */ | ||
2227 | |||