66 lines
1.4 KiB
C
66 lines
1.4 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) International Business Machines Corp., 2001
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*/
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/*\
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* [Description]
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*
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* Verify that, fchmod(2) will succeed to change the mode of a file
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* and set the sticky bit on it if invoked by non-root (uid != 0)
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* process with the following constraints,
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* - the process is the owner of the file.
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* - the effective group ID or one of the supplementary group ID's of the
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* process is equal to the group ID of the file.
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*/
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#include <pwd.h>
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#include "fchmod.h"
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#include "tst_test.h"
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static int fd;
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static const char nobody_uid[] = "nobody";
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static struct passwd *ltpuser;
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static void verify_fchmod(void)
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{
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struct stat stat_buf;
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mode_t file_mode;
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TST_EXP_PASS_SILENT(fchmod(fd, PERMS));
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if (fstat(fd, &stat_buf) == -1)
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tst_brk(TFAIL | TERRNO, "fstat failed");
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file_mode = stat_buf.st_mode;
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if ((file_mode & PERMS) != PERMS)
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tst_res(TFAIL, "%s: Incorrect modes 0%3o, "
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"Expected 0777", TESTFILE, file_mode);
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else
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tst_res(TPASS, "Functionality of fchmod(%d, "
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"%#o) successful", fd, PERMS);
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}
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static void setup(void)
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{
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ltpuser = SAFE_GETPWNAM(nobody_uid);
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SAFE_SETEUID(ltpuser->pw_uid);
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fd = SAFE_OPEN(TESTFILE, O_RDWR | O_CREAT, FILE_MODE);
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}
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static void cleanup(void)
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{
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if (fd > 0)
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SAFE_CLOSE(fd);
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}
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static struct tst_test test = {
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.test_all = verify_fchmod,
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.setup = setup,
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.cleanup = cleanup,
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.needs_tmpdir = 1,
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.needs_root = 1,
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};
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