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authorUlrich Drepper <drepper@redhat.com>1999-08-03 17:09:27 +0000
committerUlrich Drepper <drepper@redhat.com>1999-08-03 17:09:27 +0000
commit4bdd64534ff87261e204570697d7f7e83af5b6cd (patch)
tree905e049463a281a57c294f90f5c4df715b2a5800 /sysdeps/posix
parentd03db7f0c7c59bf5ef95114b5787324a5171587a (diff)
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Update.
1999-08-03 Andreas Schwab <schwab@suse.de> * sysdeps/posix/sigset.c: Unblock the signal after setting its disposition. Use SIG_BLOCK/SIG_UNBLOCK instead of SIG_SETMASK to avoid two calls to sigprocmask.
Diffstat (limited to 'sysdeps/posix')
-rw-r--r--sysdeps/posix/sigset.c23
1 files changed, 17 insertions, 6 deletions
diff --git a/sysdeps/posix/sigset.c b/sysdeps/posix/sigset.c
index 52da0f3060..e234d8a52d 100644
--- a/sysdeps/posix/sigset.c
+++ b/sysdeps/posix/sigset.c
@@ -29,23 +29,22 @@ sigset (sig, disp)
__sighandler_t disp;
{
struct sigaction act, oact;
+ sigset_t set;
#ifdef SIG_HOLD
/* Handle SIG_HOLD first. */
if (disp == SIG_HOLD)
{
- sigset_t set;
-
- /* Retrieve current signal set. */
- if (__sigprocmask (SIG_SETMASK, NULL, &set) < 0)
+ /* Create an empty signal set. */
+ if (__sigemptyset (&set) < 0)
return SIG_ERR;
/* Add the specified signal. */
if (sigaddset (&set, sig) < 0)
return SIG_ERR;
- /* Set the new mask. */
- if (__sigprocmask (SIG_SETMASK, &set, NULL) < 0)
+ /* Add the signal set to the current signal mask. */
+ if (__sigprocmask (SIG_BLOCK, &set, NULL) < 0)
return SIG_ERR;
return SIG_HOLD;
@@ -66,5 +65,17 @@ sigset (sig, disp)
if (__sigaction (sig, &act, &oact) < 0)
return SIG_ERR;
+ /* Create an empty signal set. */
+ if (__sigemptyset (&set) < 0)
+ return SIG_ERR;
+
+ /* Add the specified signal. */
+ if (sigaddset (&set, sig) < 0)
+ return SIG_ERR;
+
+ /* Remove the signal set from the current signal mask. */
+ if (__sigprocmask (SIG_UNBLOCK, &set, NULL) < 0)
+ return SIG_ERR;
+
return oact.sa_handler;
}