1 /* 2 * This program is free software; you can redistribute it and/or modify 3 * it under the terms of the GNU General Public License version 2. 4 * 5 * This program is distributed in the hope that it will be useful, 6 * but WITHOUT ANY WARRANTY; without even the implied warranty of 7 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 8 * GNU General Public License for more details. 9 * 10 * Test that the shm_open() function sets errno = EMFILE if too many file 11 * descriptors are currently in use by this process. 12 */ 13 14 #include <stdio.h> 15 #include <sys/mman.h> 16 #include <sys/stat.h> 17 #include <fcntl.h> 18 #include <errno.h> 19 #include "posixtest.h" 20 21 #define SHM_NAME "posixtest_38-1" 22 23 int main(void) 24 { 25 int fd = 0, count = 0; 26 27 while (fd != -1) { 28 fd = shm_open(SHM_NAME, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR); 29 count++; 30 } 31 if (errno == EMFILE) { 32 shm_unlink(SHM_NAME); 33 printf("Test PASSED: %i files open.\n", count); 34 return PTS_PASS; 35 } 36 perror("shm_open"); 37 shm_unlink(SHM_NAME); 38 return PTS_FAIL; 39 } 40
