144 lines
3.6 KiB
C
144 lines
3.6 KiB
C
/******************************************************************************
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*
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* Copyright (c) International Business Machines Corp., 2006
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* Author: Yi Yang <yyangcdl@cn.ibm.com>
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* Copyright (c) Cyril Hrubis 2014 <chrubis@suse.cz>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* This test case will verify basic function of readlinkat
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* added by kernel 2.6.16 or up.
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*
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*****************************************************************************/
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#define _GNU_SOURCE
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include <signal.h>
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#include "test.h"
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#include "safe_macros.h"
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#include "lapi/readlinkat.h"
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static void setup(void);
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static void cleanup(void);
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char *TCID = "readlinkat01";
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static int dir_fd, fd;
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static int fd_invalid = 100;
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static int fd_atcwd = AT_FDCWD;
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#define TEST_SYMLINK "readlink_symlink"
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#define TEST_FILE "readlink_file"
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static char abspath[1024];
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static struct test_case {
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int *dir_fd;
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const char *path;
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const char *exp_buf;
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int exp_ret;
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int exp_errno;
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} test_cases[] = {
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{&dir_fd, TEST_SYMLINK, TEST_FILE, sizeof(TEST_FILE)-1, 0},
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{&dir_fd, abspath, TEST_FILE, sizeof(TEST_FILE)-1, 0},
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{&fd, TEST_SYMLINK, NULL, -1, ENOTDIR},
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{&fd_invalid, TEST_SYMLINK, NULL, -1, EBADF},
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{&fd_atcwd, TEST_SYMLINK, TEST_FILE, sizeof(TEST_FILE)-1, 0},
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};
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int TST_TOTAL = ARRAY_SIZE(test_cases);
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static void verify_readlinkat(struct test_case *test)
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{
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char buf[1024];
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memset(buf, 0, sizeof(buf));
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TEST(readlinkat(*test->dir_fd, test->path, buf, sizeof(buf)));
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if (TEST_RETURN != test->exp_ret) {
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tst_resm(TFAIL | TTERRNO,
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"readlinkat() returned %ld, expected %d",
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TEST_RETURN, test->exp_ret);
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return;
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}
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if (TEST_ERRNO != test->exp_errno) {
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tst_resm(TFAIL | TTERRNO,
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"readlinkat() returned %ld, expected %d",
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TEST_RETURN, test->exp_ret);
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return;
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}
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if (test->exp_ret > 0 && strcmp(test->exp_buf, buf)) {
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tst_resm(TFAIL, "Unexpected buffer have '%s', expected '%s'",
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buf, test->exp_buf);
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return;
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}
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tst_resm(TPASS | TTERRNO, "readlinkat() returned %ld", TEST_RETURN);
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}
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int main(int ac, char **av)
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{
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int lc;
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int i;
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tst_parse_opts(ac, av, NULL, NULL);
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setup();
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for (lc = 0; TEST_LOOPING(lc); lc++) {
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for (i = 0; i < TST_TOTAL; i++)
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verify_readlinkat(&test_cases[i]);
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}
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cleanup();
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tst_exit();
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}
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static void setup(void)
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{
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tst_tmpdir();
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char *tmpdir = tst_get_tmpdir();
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snprintf(abspath, sizeof(abspath), "%s/" TEST_SYMLINK, tmpdir);
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free(tmpdir);
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fd = SAFE_OPEN(cleanup, TEST_FILE, O_CREAT, 0600);
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SAFE_SYMLINK(cleanup, TEST_FILE, TEST_SYMLINK);
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dir_fd = SAFE_OPEN(cleanup, ".", O_DIRECTORY);
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TEST_PAUSE;
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}
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static void cleanup(void)
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{
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if (fd > 0 && close(fd))
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tst_resm(TWARN | TERRNO, "Failed to close fd");
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if (dir_fd > 0 && close(dir_fd))
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tst_resm(TWARN | TERRNO, "Failed to close dir_fd");
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tst_rmdir();
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}
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