minix/lib/libc/sys-minix/sigreturn.c
Lionel Sambuc 84d9c625bf Synchronize on NetBSD-CVS (2013/12/1 12:00:00 UTC)
- Fix for possible unset uid/gid in toproto
 - Fix for default mtree style
 - Update libelf
 - Importing libexecinfo
 - Resynchronize GCC, mpc, gmp, mpfr
 - build.sh: Replace params with show-params.
     This has been done as the make target has been renamed in the same
     way, while a new target named params has been added. This new
     target generates a file containing all the parameters, instead of
     printing it on the console.
 - Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
     get getservbyport() out of the inner loop

Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
2014-07-28 17:05:06 +02:00

32 lines
886 B
C

#include "namespace.h"
#include <sys/cdefs.h>
#include <lib.h>
#include <string.h>
#include <assert.h>
#include <signal.h>
#include <string.h>
#include <sys/signal.h>
#include <machine/signal.h>
int sigreturn(struct sigcontext *scp)
{
sigset_t set;
/* The message can't be on the stack, because the stack will vanish out
* from under us. The send part of ipc_sendrec will succeed, but when
* a message is sent to restart the current process, who knows what will
* be in the place formerly occupied by the message?
*/
static message m;
/* Protect against race conditions by blocking all interrupts. */
sigfillset(&set); /* splhi */
sigprocmask(SIG_SETMASK, &set, (sigset_t *) NULL);
memset(&m, 0, sizeof(m));
m.PM_SIG_SET = scp->sc_mask;
m.PM_SIG_CTX = (char *) scp;
return(_syscall(PM_PROC_NR, PM_SIGRETURN, &m)); /* normally doesn't return */
}