diff options
Diffstat (limited to 'fs/compat.c')
| -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 @@ #include <linux/tsacct_kern.h> #include <linux/security.h> #include <linux/highmem.h> +#include <linux/signal.h> #include <linux/poll.h> #include <linux/mm.h> #include <linux/eventpoll.h> @@ -2199,3 +2200,28 @@ asmlinkage long compat_sys_epoll_pwait(int epfd, #endif /* TIF_RESTORE_SIGMASK */ #endif /* CONFIG_EPOLL */ + +#ifdef CONFIG_SIGNALFD + +asmlinkage long compat_sys_signalfd(int ufd, + const compat_sigset_t __user *sigmask, + compat_size_t sigsetsize) +{ + compat_sigset_t ss32; + sigset_t tmp; + sigset_t __user *ksigmask; + + if (sigsetsize != sizeof(compat_sigset_t)) + return -EINVAL; + if (copy_from_user(&ss32, sigmask, sizeof(ss32))) + return -EFAULT; + sigset_from_compat(&tmp, &ss32); + ksigmask = compat_alloc_user_space(sizeof(sigset_t)); + if (copy_to_user(ksigmask, &tmp, sizeof(sigset_t))) + return -EFAULT; + + return sys_signalfd(ufd, ksigmask, sizeof(sigset_t)); +} + +#endif /* CONFIG_SIGNALFD */ + |