141 lines
3.0 KiB
C
141 lines
3.0 KiB
C
/*
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*
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* Copyright (c) International Business Machines Corp., 2001
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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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/*
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* DESCRIPTION
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* Testcase to check open(2) sets errno to EACCES correctly.
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*
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* ALGORITHM
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* Create a file owned by root with no read permission for other users.
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* Attempt to open it as ltpuser(1). The attempt should fail with EACCES.
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* RESTRICTION
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* Must run test as root.
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*/
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#include <errno.h>
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#include <pwd.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include "test.h"
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#include "safe_macros.h"
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char *TCID = "open05";
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int TST_TOTAL = 1;
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static char fname[20];
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static int fd;
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static uid_t nobody_uid;
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static void cleanup(void);
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static void setup(void);
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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 e_code, status, retval = 0;
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pid_t pid;
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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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/* reset tst_count in case we are looping */
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tst_count = 0;
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pid = FORK_OR_VFORK();
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if (pid == -1)
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tst_brkm(TBROK, cleanup, "fork() failed");
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if (pid == 0) {
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if (seteuid(nobody_uid) == -1) {
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tst_resm(TWARN, "seteuid() failed, errno: %d",
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errno);
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}
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TEST(open(fname, O_RDWR));
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if (TEST_RETURN != -1) {
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tst_resm(TFAIL, "open succeeded unexpectedly");
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continue;
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}
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if (TEST_ERRNO != EACCES) {
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retval = 1;
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tst_resm(TFAIL, "Expected EACCES got %d",
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TEST_ERRNO);
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} else {
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tst_resm(TPASS, "open returned expected "
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"EACCES error");
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}
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/* set the id back to root */
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if (seteuid(0) == -1)
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tst_resm(TWARN, "seteuid(0) failed");
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exit(retval);
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} else {
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/* wait for the child to finish */
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wait(&status);
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/* make sure the child returned a good exit status */
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e_code = status >> 8;
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if ((e_code != 0) || (retval != 0))
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tst_resm(TFAIL, "Failures reported above");
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close(fd);
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}
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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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struct passwd *pw;
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tst_require_root();
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pw = SAFE_GETPWNAM(NULL, "nobody");
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nobody_uid = pw->pw_uid;
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tst_sig(FORK, DEF_HANDLER, cleanup);
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TEST_PAUSE;
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/* make a temporary directory and cd to it */
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tst_tmpdir();
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sprintf(fname, "file.%d", getpid());
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fd = SAFE_OPEN(cleanup, fname, O_RDWR | O_CREAT, 0700);
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}
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static void cleanup(void)
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{
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unlink(fname);
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/* delete the test directory created in setup() */
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tst_rmdir();
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}
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