| #include <unistd.h> |
| #include <stdio.h> |
| #include <errno.h> |
| #include <string.h> |
| #include <signal.h> |
| #include "test.h" |
| |
| #define TEST(r, f, x, m) ( \ |
| ((r) = (f)) == (x) || (error("%s failed (" m ")\n", #f, r, x), 0) ) |
| |
| #define TEST_E(f) ( \ |
| (errno = 0), \ |
| (f) || (error("%s failed (errno = %d)\n", #f, errno), 0) ) |
| |
| #define TEST_S(s, x, m) ( \ |
| !strcmp((s),(x)) || \ |
| (error("[%s] != [%s] (%s)\n", s, x, m), 0) ) |
| |
| static sig_atomic_t got_sig; |
| |
| static void handler(int sig) { |
| got_sig = 1; |
| } |
| |
| int main(void) |
| { |
| int i; |
| char foo[6]; |
| char cmd[64]; |
| FILE *f; |
| |
| TEST_E(f = popen("echo hello", "r")); |
| if (f) { |
| TEST_E(fgets(foo, sizeof foo, f)); |
| TEST_S(foo, "hello", "child process did not say hello"); |
| TEST(i, pclose(f), 0, "exit status %04x != %04x"); |
| } |
| |
| signal(SIGUSR1, handler); |
| snprintf(cmd, sizeof cmd, "read a ; test \"x$a\" = xhello && kill -USR1 %d", getpid()); |
| TEST_E(f = popen(cmd, "w")); |
| if (f) { |
| TEST_E(fputs("hello", f) >= 0); |
| TEST(i, pclose(f), 0, "exit status %04x != %04x"); |
| TEST(i, got_sig, 1, "child process did not send signal"); |
| } |
| signal(SIGUSR1, SIG_DFL); |
| return test_status; |
| } |