1 /* 2 * Copyright (C) 2014 Linux Test Project, Inc. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of version 2 of the GNU General Public License as 6 * published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it would be useful, but 9 * WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 11 * 12 * Further, this software is distributed without any warranty that it is 13 * free of the rightful claim of any third person regarding infringement 14 * or the like. Any license provided herein, whether implied or 15 * otherwise, applies only to this software file. Patent licenses, if 16 * any, provided herein do not apply to combinations of this program with 17 * other software, or any other product whatsoever. 18 */ 19 20 #include <errno.h> 21 #include <fcntl.h> 22 #include <string.h> 23 #include "test.h" 24 #include "safe_macros.h" 25 26 #define OUTPUT_FNAME "output" 27 28 char *TCID = "trerrno"; 29 int TST_TOTAL = 1; 30 31 static void setup(void) 32 { 33 tst_tmpdir(); 34 } 35 36 static void cleanup(void) 37 { 38 tst_rmdir(); 39 } 40 41 int main(void) 42 { 43 int fd, stdout_fd; 44 char msg[4096], *pos; 45 FILE *f; 46 47 setup(); 48 49 /* redirect stdout to file */ 50 stdout_fd = dup(fileno(stdout)); 51 fd = SAFE_OPEN(NULL, OUTPUT_FNAME, O_RDWR | O_CREAT, 0666); 52 TEST(dup2(fd, fileno(stdout))); 53 if (TEST_RETURN == -1) 54 tst_brkm(TBROK | TTERRNO, cleanup, "dup2"); 55 56 errno = EPERM; 57 TEST_ERRNO = EPERM; 58 TEST_RETURN = EINVAL; 59 tst_resm(TINFO | TRERRNO, "test"); 60 tst_flush(); 61 62 /* restore stdout */ 63 TEST(dup2(stdout_fd, fileno(stdout))); 64 if (TEST_RETURN == -1) 65 tst_brkm(TBROK | TTERRNO, cleanup, "dup2"); 66 67 /* read file and verify that output is as expected */ 68 SAFE_LSEEK(cleanup, fd, 0, SEEK_SET); 69 f = fdopen(fd, "r"); 70 if (!f) 71 tst_brkm(TBROK | TERRNO, cleanup, "fdopen"); 72 if (!fgets(msg, sizeof(msg), f)) 73 tst_brkm(TBROK, cleanup, "fgets"); 74 fclose(f); 75 76 pos = strchr(msg, '\n'); 77 if (pos != NULL) 78 *pos = '\0'; 79 80 tst_resm(TINFO, "%s", msg); 81 if (strstr(msg, "EPERM")) 82 tst_resm(TFAIL, "EPERM shouldn't be in TRERRNO output"); 83 if (strstr(msg, "EINVAL")) 84 tst_resm(TPASS, "EINVAL should be in TRERRNO output"); 85 else 86 tst_resm(TFAIL, "EINVAL not found in TRERRNO output"); 87 88 cleanup(); 89 tst_exit(); 90 } 91
