diff options
| author | Salvatore Cro <salvatore.cro@st.com> | 2010-09-09 16:01:04 +0200 |
|---|---|---|
| committer | Carmelo Amoroso <carmelo.amoroso@st.com> | 2010-09-15 12:38:42 +0200 |
| commit | 4b88e6e858b55def2ef0392278ddf81835f2ac45 (patch) | |
| tree | e97e06b8eb18ef18f86e598ccec879405bdcee53 /libc/sysdeps/linux/common/ppoll.c | |
| parent | 37eb913ed8c4798b736e678f4dbd9f4a91a68f74 (diff) | |
libc: Fix cancellation handling in some C functions
According to POSIX.1-2008 standard, the following syscalls shall be
cancellation points : waitid, sleep, fdatasync, ppoll.
Further, if generic syscall is not available and stubs are
configured, provide the stub implementation for function.
Signed-off-by: Salvatore Cro <salvatore.cro@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Diffstat (limited to 'libc/sysdeps/linux/common/ppoll.c')
| -rw-r--r-- | libc/sysdeps/linux/common/ppoll.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/common/ppoll.c b/libc/sysdeps/linux/common/ppoll.c index 02c8013a5..09b2b1539 100644 --- a/libc/sysdeps/linux/common/ppoll.c +++ b/libc/sysdeps/linux/common/ppoll.c @@ -24,6 +24,12 @@ #include <stddef.h> #if defined __NR_ppoll && defined __UCLIBC_LINUX_SPECIFIC__ +# ifdef __UCLIBC_HAS_THREADS_NATIVE__ +# include <sysdep-cancel.h> +# else +# define SINGLE_THREAD_P 1 +# endif + int ppoll(struct pollfd *fds, nfds_t nfds, const struct timespec *timeout, const sigset_t *sigmask) @@ -35,8 +41,15 @@ ppoll(struct pollfd *fds, nfds_t nfds, const struct timespec *timeout, tval = *timeout; timeout = &tval; } + if (SINGLE_THREAD_P) + return INLINE_SYSCALL(ppoll, 5, fds, nfds, timeout, sigmask, _NSIG / 8); - return INLINE_SYSCALL(ppoll, 5, fds, nfds, timeout, sigmask, _NSIG / 8); +# ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = INLINE_SYSCALL(ppoll, 5, fds, nfds, timeout, sigmask, _NSIG / 8); + LIBC_CANCEL_RESET (oldtype); + return result; +# endif } libc_hidden_def(ppoll) #endif |