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Don't block SIGINT, SIGQUIT, SIGHUP, etc. in pclose()... 

"Some historical implementations either block or ignore the signals
    SIGINT, SIGQUIT, and SIGHUP while waiting for the child process to
    terminate.  Since this behavior is not described in POSIX.2, such
    implementations are not conforming."
This commit is contained in:
jtc 1993-08-23 21:56:31 +00:00
parent 34a64dcb50
commit 19e4e33b98
1 changed files with 1 additions and 4 deletions
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5
lib/libc/gen/popen.c
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@ -36,11 +36,10 @@
#if defined(LIBC_SCCS) && !defined(lint)
/*static char sccsid[] = "from: @(#)popen.c 5.15 (Berkeley) 2/23/91";*/
static char rcsid[] = "$Id: popen.c,v 1.3 1993/08/21 00:11:47 jtc Exp $";
static char rcsid[] = "$Id: popen.c,v 1.4 1993/08/23 21:56:31 jtc Exp $";
#endif /* LIBC_SCCS and not lint */
#include <sys/param.h>
#include <sys/signal.h>
#include <sys/wait.h>
#include <errno.h>
#include <stdio.h>
@ -126,11 +125,9 @@ pclose(iop)
if (pids == NULL || pids[fdes = fileno(iop)] == 0)
return (-1);
(void) fclose(iop);
omask = sigblock(sigmask(SIGINT)|sigmask(SIGQUIT)|sigmask(SIGHUP));
do {
pid = waitpid(pids[fdes], &pstat, 0);
} while (pid == -1 && errno == EINTR);
(void) sigsetmask(omask);
pids[fdes] = 0;
return (pid == -1 ? -1 : pstat);
}