blob: 868b70eedfdd39c71e43d99db7f956946dc5a90e [file] [log] [blame]
lh9ed821d2023-04-07 01:36:19 -07001#include <unistd.h>
2#include <stdio.h>
3#include <errno.h>
4#include <string.h>
5#include <signal.h>
6
7#define TEST(r, f, x, m) ( \
8((r) = (f)) == (x) || \
9(printf(__FILE__ ":%d: %s failed (" m ")\n", __LINE__, #f, r, x), err++, 0) )
10
11#define TEST_E(f) ( (errno = 0), (f) || \
12(printf(__FILE__ ":%d: %s failed (errno = %d)\n", __LINE__, #f, errno), err++, 0) )
13
14#define TEST_S(s, x, m) ( \
15!strcmp((s),(x)) || \
16(printf(__FILE__ ":%d: [%s] != [%s] (%s)\n", __LINE__, s, x, m), err++, 0) )
17
18static sig_atomic_t got_sig;
19
20static void handler(int sig)
21{
22 got_sig = 1;
23}
24
25int main(void)
26{
27 int i;
28 char foo[6];
29 char cmd[64];
30 int err = 0;
31 FILE *f;
32
33 TEST_E(f = popen("echo hello", "r"));
34 TEST_E(fgets(foo, sizeof foo, f));
35 TEST_S(foo, "hello", "child process did not say hello");
36 TEST(i, pclose(f), 0, "exit status %04x != %04x");
37
38 signal(SIGUSR1, handler);
39 snprintf(cmd, sizeof cmd, "read a ; test \"x$a\" = xhello && kill -USR1 %d", getpid());
40 TEST_E(f = popen(cmd, "w"));
41 TEST_E(fputs("hello", f) >= 0);
42 TEST(i, pclose(f), 0, "exit status %04x != %04x");
43 signal(SIGUSR1, SIG_DFL);
44 TEST(i, got_sig, 1, "child process did not send signal (%i!=%i)");
45
46 return err;
47}