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Reset SIGCHLD handler to default if we need to wait. Reset SIGPIPE

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handler before exec.
This commit is contained in:
Alexandre Julliard 2003-05-21 18:34:29 +00:00
parent 7c836cf954
commit fa9af1d0dc
1 changed files with 29 additions and 8 deletions
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37
libs/port/spawn.c
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@ -22,6 +22,7 @@
#include "wine/port.h" #include "wine/port.h"
#include <errno.h> #include <errno.h>
#include <signal.h>
#ifdef HAVE_SYS_WAIT_H #ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h> #include <sys/wait.h>
#endif #endif
@ -34,19 +35,39 @@ int spawnvp(int mode, const char *cmdname, char *const argv[])
{ {
#ifndef HAVE__SPAWNVP #ifndef HAVE__SPAWNVP
int pid = 0, status, wret; int pid = 0, status, wret;
struct sigaction dfl_act, old_act;
if (mode != _P_OVERLAY) pid = fork(); if (mode == _P_OVERLAY)
if (pid == 0) pid = execvp(argv[0], argv); {
if (pid < 0) return -1; execvp(cmdname, argv);
return -1; /* if we get here it failed */
}
if (mode != _P_WAIT) return pid; dfl_act.sa_handler = SIG_DFL;
dfl_act.sa_flags = 0;
sigemptyset( &dfl_act.sa_mask );
while (pid != (wret = waitpid(pid, &status, 0))) if (mode == _P_WAIT) sigaction( SIGCHLD, &dfl_act, &old_act );
if (wret == -1 && errno != EINTR) break;
if (pid == wret && WIFEXITED(status)) return WEXITSTATUS(status); pid = fork();
if (pid == 0)
{
sigaction( SIGPIPE, &dfl_act, NULL );
execvp(cmdname, argv);
_exit(1);
}
return 255; /* abnormal exit with an abort or an interrupt */ if (pid != -1 && mode == _P_WAIT)
{
while (pid != (wret = waitpid(pid, &status, 0)))
if (wret == -1 && errno != EINTR) break;
if (pid == wret && WIFEXITED(status)) pid = WEXITSTATUS(status);
else pid = 255; /* abnormal exit with an abort or an interrupt */
}
if (mode == _P_WAIT) sigaction( SIGCHLD, &old_act, NULL );
return pid;
#else /* HAVE__SPAWNVP */ #else /* HAVE__SPAWNVP */
return _spawnvp(mode, cmdname, argv); return _spawnvp(mode, cmdname, argv);
#endif /* HAVE__SPAWNVP */ #endif /* HAVE__SPAWNVP */