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/* COVERAGE: sigaltstack */
#define _BSD_SOURCE
#define _DEFAULT_SOURCE
#include <unistd.h>
#include <stdlib.h>
#include <signal.h>
#include <string.h>
// To test for glibc support for sigaltstack():
#define GLIBC_SUPPORT \
(_BSD_SOURCE || _XOPEN_SOURCE >= 500 || \
_XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED \
|| /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L)
static void
sig_act_handler(int signo)
{
}
int main()
{
#ifdef GLIBC_SUPPORT
stack_t ss;
struct sigaction act, oact;
sigset_t mask;
ss.ss_sp = malloc(SIGSTKSZ);
ss.ss_size = SIGSTKSZ;
ss.ss_flags = SS_ONSTACK;
/* Set up an alternate signal stack. */
sigaltstack(&ss, NULL);
// Notice we can't test for an exact ss_size, since SIGSTKSZ might
// vary on different architectures.
//staptest// sigaltstack ({ss_sp=XXXX, ss_flags=SS_ONSTACK, ss_size=NNNN}, 0x0) = 0
/* Set up the signal handler for 'SIGALRM'. Notice the SA_ONSTACK
* flag, which tells the system to use the alternate signal
* stack. Also note that glibc on some platforms likes to add in
* the SA_RESTORER flag. */
memset(&act, 0, sizeof(act));
act.sa_flags = SA_ONSTACK;
act.sa_handler = (void (*)())sig_act_handler;
sigaction(SIGALRM, &act, &oact);
#ifdef __ia64__
//staptest// rt_sigaction (SIGALRM, {XXXX, SA_ONSTACK, \[EMPTY\]}, XXXX, 8) = 0
#else
//staptest// rt_sigaction (SIGALRM, {XXXX, SA_ONSTACK[[[[|SA_RESTORER]]]]?, XXXX, \[EMPTY\]}, XXXX, 8) = 0
#endif
alarm(5);
#if defined(__ia64__) || defined(__arm__) || defined(__aarch64__)
//staptest// setitimer (ITIMER_REAL, \[0.000000,5.000000\], XXXX) = NNNN
#else
//staptest// alarm (5) = NNNN
#endif
sigemptyset(&mask);
sigsuspend(&mask);
//staptest// rt_sigsuspend (\[EMPTY\], 8) = NNNN
alarm(0);
#if defined(__ia64__) || defined(__arm__) || defined(__aarch64__)
//staptest// setitimer (ITIMER_REAL, \[0.000000,0.000000\], XXXX) = NNNN
#else
//staptest// alarm (0) = NNNN
#endif
/* Limit testing. */
sigaltstack((stack_t *)-1, NULL);
#ifdef __s390__
//staptest// sigaltstack (0x[7]?[f]+, 0x0) = NNNN
#else
//staptest// sigaltstack (0x[f]+, 0x0) = NNNN
#endif
sigaltstack(NULL, (stack_t *)-1);
#ifdef __s390__
//staptest// sigaltstack (0x0, 0x[7]?[f]+) = NNNN
#else
//staptest// sigaltstack (0x0, 0x[f]+) = NNNN
#endif
#endif
return 0;
}
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