#include <stdio.h> #include <string.h> #include <unistd.h> static int do_test (void) { int fd = dup (fileno (stdout)); if (fd <= 1) { puts ("dup failed"); return 1; } FILE *f1 = fdopen (fd, "w"); if (f1 == NULL) { printf ("fdopen failed: %m\n"); return 1; } fclose (stdout); FILE *f2 = popen ("echo test1", "r"); if (f2 == NULL) { fprintf (f1, "1st popen failed: %m\n"); return 1; } FILE *f3 = popen ("echo test2", "r"); if (f2 == NULL || f3 == NULL) { fprintf (f1, "2nd popen failed: %m\n"); return 1; } char *line = NULL; size_t len = 0; int result = 0; if (getline (&line, &len, f2) != 6) { fputs ("could not read line from 1st popen\n", f1); result = 1; } else if (strcmp (line, "test1\n") != 0) { fprintf (f1, "read \"%s\"\n", line); result = 1; } if (getline (&line, &len, f2) != -1) { fputs ("second getline did not return -1\n", f1); result = 1; } if (getline (&line, &len, f3) != 6) { fputs ("could not read line from 2nd popen\n", f1); result = 1; } else if (strcmp (line, "test2\n") != 0) { fprintf (f1, "read \"%s\"\n", line); result = 1; } if (getline (&line, &len, f3) != -1) { fputs ("second getline did not return -1\n", f1); result = 1; } int ret = pclose (f2); if (ret != 0) { fprintf (f1, "1st pclose returned %d\n", ret); result = 1; } ret = pclose (f3); if (ret != 0) { fprintf (f1, "2nd pclose returned %d\n", ret); result = 1; } return result; } #define TEST_FUNCTION do_test () #include "../test-skeleton.c"