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| author | Davide Libenzi <davidel@xmailserver.org> | 2007-05-11 07:23:15 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-11 17:29:36 +0200 |
| commit | 6d18c9220965b437287c3a7e803725c24992ceac (patch) | |
| tree | 95b87523f134f10a25487b6fdc702a338fb0e911 | |
| parent | signal/timer/event: signalfd wire up x86 arches (diff) | |
| download | linux-6d18c9220965b437287c3a7e803725c24992ceac.tar.xz linux-6d18c9220965b437287c3a7e803725c24992ceac.zip | |
signal/timer/event: signalfd compat code
This patch implements the necessary compat code for the signalfd system call.
Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -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 */ + |