149 lines
3.5 KiB
C
149 lines
3.5 KiB
C
// 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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* Ported to LTP: Wayne Boyer
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* Copyright (c) 2014-2018 Cyril Hrubis <chrubis@suse.cz>
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*/
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/*
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* Test Name: chmod06
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*
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* Test Description:
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* Verify that,
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* 1) chmod(2) returns -1 and sets errno to EPERM if the effective user id
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* of process does not match the owner of the file and the process is
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* not super user.
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* 2) chmod(2) returns -1 and sets errno to EACCES if search permission is
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* denied on a component of the path prefix.
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* 3) chmod(2) returns -1 and sets errno to EFAULT if pathname points
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* outside user's accessible address space.
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* 4) chmod(2) returns -1 and sets errno to ENAMETOOLONG if the pathname
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* component is too long.
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* 5) chmod(2) returns -1 and sets errno to ENOTDIR if the directory
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* component in pathname is not a directory.
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* 6) chmod(2) returns -1 and sets errno to ENOENT if the specified file
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* does not exists.
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*/
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#include <pwd.h>
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#include <errno.h>
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#include "tst_test.h"
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#define MODE_RWX (S_IRWXU|S_IRWXG|S_IRWXO)
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#define FILE_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)
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#define DIR_TEMP "testdir_1"
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#define TEST_FILE1 "tfile_1"
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#define TEST_FILE2 "testdir_1/tfile_2"
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#define TEST_FILE3 "t_file/tfile_3"
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#define TEST_FILE4 "test_file4"
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#define MNT_POINT "mntpoint"
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#define DIR_MODE (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP| \
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S_IXGRP|S_IROTH|S_IXOTH)
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static char long_path[PATH_MAX + 2];
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static uid_t nobody_uid;
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static void set_root(void);
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static void set_nobody(void);
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static struct tcase {
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char *pathname;
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mode_t mode;
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int exp_errno;
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void (*setup)(void);
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void (*cleanup)(void);
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} tc[] = {
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{TEST_FILE1, FILE_MODE, EPERM, set_nobody, set_root},
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{TEST_FILE2, FILE_MODE, EACCES, set_nobody, set_root},
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{(char *)-1, FILE_MODE, EFAULT, NULL, NULL},
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{NULL, FILE_MODE, EFAULT, NULL, NULL},
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{long_path, FILE_MODE, ENAMETOOLONG, NULL, NULL},
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{"", FILE_MODE, ENOENT, NULL, NULL},
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{TEST_FILE3, FILE_MODE, ENOTDIR, NULL, NULL},
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{MNT_POINT, FILE_MODE, EROFS, NULL, NULL},
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{TEST_FILE4, FILE_MODE, ELOOP, NULL, NULL},
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};
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static char *bad_addr;
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void run(unsigned int i)
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{
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if (tc[i].setup)
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tc[i].setup();
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TEST(chmod(tc[i].pathname, tc[i].mode));
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if (tc[i].cleanup)
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tc[i].cleanup();
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if (TST_RET != -1) {
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tst_res(TFAIL, "chmod succeeded unexpectedly");
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return;
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}
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if (TST_ERR == tc[i].exp_errno) {
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tst_res(TPASS | TTERRNO, "chmod failed as expected");
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} else {
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tst_res(TFAIL | TTERRNO, "chmod failed unexpectedly; "
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"expected %d - %s", tc[i].exp_errno,
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tst_strerrno(tc[i].exp_errno));
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}
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}
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void set_root(void)
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{
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SAFE_SETEUID(0);
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}
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void set_nobody(void)
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{
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SAFE_SETEUID(nobody_uid);
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}
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void setup(void)
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{
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struct passwd *nobody;
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unsigned int i;
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nobody = SAFE_GETPWNAM("nobody");
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nobody_uid = nobody->pw_uid;
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bad_addr = SAFE_MMAP(0, 1, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
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for (i = 0; i < ARRAY_SIZE(tc); i++) {
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if (!tc[i].pathname)
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tc[i].pathname = bad_addr;
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}
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SAFE_TOUCH(TEST_FILE1, 0666, NULL);
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SAFE_MKDIR(DIR_TEMP, MODE_RWX);
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SAFE_TOUCH(TEST_FILE2, 0666, NULL);
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SAFE_CHMOD(DIR_TEMP, FILE_MODE);
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SAFE_TOUCH("t_file", MODE_RWX, NULL);
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memset(long_path, 'a', PATH_MAX+1);
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/*
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* create two symbolic links who point to each other for
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* test ELOOP.
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*/
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SAFE_SYMLINK("test_file4", "test_file5");
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SAFE_SYMLINK("test_file5", "test_file4");
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}
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static void cleanup(void)
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{
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SAFE_CHMOD(DIR_TEMP, MODE_RWX);
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}
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static struct tst_test test = {
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.setup = setup,
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.cleanup = cleanup,
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.test = run,
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.tcnt = ARRAY_SIZE(tc),
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.needs_root = 1,
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.needs_rofs = 1,
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.mntpoint = MNT_POINT,
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};
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