]> granicus.if.org Git - strace/blob - tests/epoll_ctl.c
tests: add a list of executables without side effects
[strace] / tests / epoll_ctl.c
1 #include "tests.h"
2 #include <asm/unistd.h>
3
4 #ifdef __NR_epoll_ctl
5
6 # include <inttypes.h>
7 # include <stdio.h>
8 # include <sys/epoll.h>
9 # include <unistd.h>
10
11 static long
12 invoke_syscall(unsigned long epfd, unsigned long op, unsigned long fd, void *ev)
13 {
14         return syscall(__NR_epoll_ctl, epfd, F8ILL_KULONG_MASK | op,
15                        fd, (unsigned long) ev);
16 }
17
18 int
19 main(void)
20 {
21         TAIL_ALLOC_OBJECT_CONST_PTR(struct epoll_event, ev);
22         ev->events = EPOLLIN;
23
24         long rc = invoke_syscall(-1U, EPOLL_CTL_ADD, -2U, ev);
25         printf("epoll_ctl(-1, EPOLL_CTL_ADD, -2, {EPOLLIN,"
26                " {u32=%u, u64=%" PRIu64 "}}) = %ld %s (%m)\n",
27                ev->data.u32, ev->data.u64, rc, errno2name());
28
29         rc = invoke_syscall(-3U, EPOLL_CTL_DEL, -4U, ev);
30         printf("epoll_ctl(-3, EPOLL_CTL_DEL, -4, %p) = %ld %s (%m)\n",
31                ev, rc, errno2name());
32
33         rc = invoke_syscall(-1UL, EPOLL_CTL_MOD, -16UL, 0);
34         printf("epoll_ctl(-1, EPOLL_CTL_MOD, -16, NULL) = %ld %s (%m)\n",
35                rc, errno2name());
36
37         puts("+++ exited with 0 +++");
38         return 0;
39 }
40
41 #else
42
43 SKIP_MAIN_UNDEFINED("__NR_epoll_ctl")
44
45 #endif