| /* |
| * Copyright (C) 2014 Linux Test Project, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| * Further, this software is distributed without any warranty that it is |
| * free of the rightful claim of any third person regarding infringement |
| * or the like. Any license provided herein, whether implied or |
| * otherwise, applies only to this software file. Patent licenses, if |
| * any, provided herein do not apply to combinations of this program with |
| * other software, or any other product whatsoever. |
| */ |
| |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <string.h> |
| #include "test.h" |
| #include "safe_macros.h" |
| |
| #define OUTPUT_FNAME "output" |
| |
| char *TCID = "trerrno"; |
| int TST_TOTAL = 1; |
| |
| static void setup(void) |
| { |
| tst_tmpdir(); |
| } |
| |
| static void cleanup(void) |
| { |
| tst_rmdir(); |
| } |
| |
| int main(void) |
| { |
| int fd, stdout_fd; |
| char msg[4096], *pos; |
| FILE *f; |
| |
| setup(); |
| |
| /* redirect stdout to file */ |
| stdout_fd = dup(fileno(stdout)); |
| fd = SAFE_OPEN(NULL, OUTPUT_FNAME, O_RDWR | O_CREAT, 0666); |
| TEST(dup2(fd, fileno(stdout))); |
| if (TEST_RETURN == -1) |
| tst_brkm(TBROK | TTERRNO, cleanup, "dup2"); |
| |
| errno = EPERM; |
| TEST_ERRNO = EPERM; |
| TEST_RETURN = EINVAL; |
| tst_resm(TINFO | TRERRNO, "test"); |
| tst_flush(); |
| |
| /* restore stdout */ |
| TEST(dup2(stdout_fd, fileno(stdout))); |
| if (TEST_RETURN == -1) |
| tst_brkm(TBROK | TTERRNO, cleanup, "dup2"); |
| |
| /* read file and verify that output is as expected */ |
| SAFE_LSEEK(cleanup, fd, 0, SEEK_SET); |
| f = fdopen(fd, "r"); |
| if (!f) |
| tst_brkm(TBROK | TERRNO, cleanup, "fdopen"); |
| if (!fgets(msg, sizeof(msg), f)) |
| tst_brkm(TBROK, cleanup, "fgets"); |
| fclose(f); |
| |
| pos = strchr(msg, '\n'); |
| if (pos != NULL) |
| *pos = '\0'; |
| |
| tst_resm(TINFO, "%s", msg); |
| if (strstr(msg, "EPERM")) |
| tst_resm(TFAIL, "EPERM shouldn't be in TRERRNO output"); |
| if (strstr(msg, "EINVAL")) |
| tst_resm(TPASS, "EINVAL should be in TRERRNO output"); |
| else |
| tst_resm(TFAIL, "EINVAL not found in TRERRNO output"); |
| |
| cleanup(); |
| tst_exit(); |
| } |