Update.

2003-06-15  Ulrich Drepper  <drepper@redhat.com>

	Fix cancellation point handling wrt exception based cleanup.
	* io/Makefile: Compile fcntl.c, poll.c, and lockf.c with exceptions.
	* misc/Makefile: Compile pselect.c, readv.c, writev.c, and usleep.c
	with exceptions.
	* posix/Makefile: Compile pread.c, pread64.c, pwrite.c, pwrite64.c,
	sleep.c, wait.c, waitid.c, and waitpid.c with exceptions.
	* rt/Makefile: Compile aio_suspend.c and clock_nanosleep.c with
	exceptions.
	* signal/Makefile: Compile sigpause.c, sigsuspend.c, sigtimedwait.c,
	sigwait.c, and sigwaitinfo.c with exceptions.
	* stdlib/Makefile: Compile system.c with exceptions.
	* sysvipc/Makefile: Compile msgrcv.c and msgsnd.c with exceptions.
	* termios/Makefile: Compile tcdrain.c with exceptions.
	* sysdeps/generic/lockf.c: Add comment explaining the cancellation
	situation.
	* sysdeps/generic/pselect.c: Likewise.
	* sysdeps/posix/sigpause.c: Likewise.
	* sysdeps/posix/system.c: Likewise.
	* sysdeps/posix/waitid.c: Likewise.
	* sysdeps/unix/sysv/linux/sleep.c: Likewise.
	* sysdeps/unix/sysv/linux/usleep.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/sysdep.h: Major rewrite of
	INTERNAL_SYSCALL to not use push inside asm statement so that
	unwind info is correct around the syscall.
	* sysdeps/unix/clock_nanosleep.c: Add cancellation support.
	* sysdeps/unix/sysv/linux/clock_nanosleep.c: Likewise.

1 files changed, 12 insertions, 2 deletions

diff --git a/sysdeps/unix/clock_nanosleep.c b/sysdeps/unix/clock_nanosleep.c
index ec468ad8c9..34bbc2dae6 100644
--- a/sysdeps/unix/clock_nanosleep.c
+++ b/sysdeps/unix/clock_nanosleep.c
@@ -21,7 +21,7 @@
 #include <errno.h>
 #include <time.h>
 #include <hp-timing.h>
-
+#include <sysdep-cancel.h>
 
 #if HP_TIMING_AVAIL
 # define CPUCLOCK_P(clock) \
@@ -94,5 +94,15 @@ clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req,
     /* Not supported.  */
     return ENOTSUP;
 
-  return __builtin_expect (nanosleep (req, rem), 0) ? errno : 0;
+  if (SINGLE_THREAD_P)
+    return __builtin_expect (nanosleep (req, rem), 0) ? errno : 0;
+
+  /* More than one thread running, enable cancellation.  */
+  int oldstate = LIBC_CANCEL_ASYNC ();
+
+  int result = __builtin_expect (nanosleep (req, rem), 0) ? errno : 0;
+
+  LIBC_CANCEL_RESET (oldstate);
+
+  return result;
 }