kenmirrors/asterisk
1
0
Fork 0
mirror of https://github.com/asterisk/asterisk.git synced 2025-11-18 07:48:14 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merged revisions 48375 via svnmerge from

Browse Source 
https://origsvn.digium.com/svn/asterisk/branches/1.4

................
r48375 | tilghman | 2006-12-10 18:47:21 -0600 (Sun, 10 Dec 2006) | 13 lines

Merged revisions 48374 via svnmerge from 
https://origsvn.digium.com/svn/asterisk/branches/1.2

........
r48374 | tilghman | 2006-12-10 18:33:59 -0600 (Sun, 10 Dec 2006) | 5 lines

When doing a fork() and exec(), two problems existed (Issue 8086):
1) Ignored signals stayed ignored after the exec().
2) Signals could possibly fire between the fork() and exec(), causing Asterisk
signal handlers within the child to execute, which caused nasty race conditions.

........

................


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@48376 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Tilghman Lesher
2006-12-11 00:52:19 +00:00
parent 23e606f70a
commit d670858735
8 changed files with 103 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
apps/app_zapras.c
View File

@@ -82,11 +82,23 @@ static pid_t spawn_ras(struct ast_channel *chan, char *args)
char *argv[PPP_MAX_ARGS];
int argc = 0;
char *stringp=NULL;
sigset_t fullset, oldset;
sigfillset(&fullset);
pthread_sigmask(SIG_BLOCK, &fullset, &oldset);
/* Start by forking */
pid = fork();
if (pid)
if (pid) {
pthread_sigmask(SIG_SETMASK, &oldset, NULL);
return pid;
}
/* Restore original signal handlers */
for (x=0;x<NSIG;x++)
signal(x, SIG_DFL);
pthread_sigmask(SIG_UNBLOCK, &fullset, NULL);
/* Execute RAS on File handles */
dup2(chan->fds[0], STDIN_FILENO);
@@ -99,10 +111,6 @@ static pid_t spawn_ras(struct ast_channel *chan, char *args)
for (x=STDERR_FILENO + 1;x<1024;x++)
close(x);
/* Restore original signal handlers */
for (x=0;x<NSIG;x++)
signal(x, SIG_DFL);
/* Reset all arguments */
memset(argv, 0, sizeof(argv));