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#ifndef _DEFAULT_SOURCE
#define _DEFAULT_SOURCE
#endif
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/capability.h>
#include <sys/psx_syscall.h>
#include <sys/prctl.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
static void *thread_fork_exit(void *data) {
usleep(1234);
pid_t pid = fork();
long int start = cap_prctl(PR_GET_KEEPCAPS, 0, 0, 0, 0, 0);
if (start == -1) {
perror("FAILED: unable to start");
exit(1);
}
if (pid == 0) {
if (cap_prctlw(PR_SET_KEEPCAPS, !start, 0, 0, 0, 0) != 0) {
perror("failed to set proc");
exit(1);
}
if (cap_prctlw(PR_GET_KEEPCAPS, 0, 0, 0, 0, 0) == start) {
perror("failed to have set forked proc");
exit(1);
}
exit(0);
}
int res;
if (waitpid(pid, &res, 0) != pid || res != 0) {
printf("FAILED: pid=%d wait returned %d and/or error: %d\n",
pid, res, errno);
exit(1);
}
return NULL;
}
int main(int argc, char **argv) {
int i;
printf("hello libcap and libpsx ");
fflush(stdout);
long int start = cap_prctl(PR_GET_KEEPCAPS, 0, 0, 0, 0, 0);
if (start == -1) {
perror("FAILED: to actually start");
exit(1);
}
pthread_t ignored[10];
for (i = 0; i < 10; i++) {
pthread_create(&ignored[i], NULL, thread_fork_exit, NULL);
printf("."); /* because of fork, this may print double */
fflush(stdout); /* try to limit the above effect */
if (cap_prctlw(PR_SET_KEEPCAPS, i & 1, 0, 0, 0, 0)) {
perror("failed to set proc");
exit(1);
}
/*
* This should validate all threads think the same thing,
* and none of the fork() calls mess anything up.
*/
if (cap_prctlw(PR_GET_KEEPCAPS, 0, 0, 0, 0, 0) != (i & 1)) {
perror("failed to have set proc");
exit(1);
}
usleep(1000);
}
printf(" PASSED\n");
exit(0);
}
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