107 lines
2.6 KiB
C
107 lines
2.6 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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* Copyright (c) 2013 Fujitsu Ltd.
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*/
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/*
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* Verify that,
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* 1) access() fails with -1 return value and sets errno to EINVAL
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* if the specified access mode argument is invalid.
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* 2) access() fails with -1 return value and sets errno to ENOENT
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* if the specified file doesn't exist (or pathname is NULL).
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* 3) access() fails with -1 return value and sets errno to ENAMETOOLONG
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* if the pathname size is > PATH_MAX characters.
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* 4) access() fails with -1 return value and sets errno to ENOTDIR
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* if a component used as a directory in pathname is not a directory.
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* 5) access() fails with -1 return value and sets errno to ELOOP
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* if too many symbolic links were encountered in resolving pathname.
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* 6) access() fails with -1 return value and sets errno to EROFS
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* if write permission was requested for files on a read-only file system.
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*
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* Ported to LTP: Wayne Boyer
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* 11/2013 Ported by Xiaoguang Wang <wangxg.fnst@cn.fujitsu.com>
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* 11/2016 Modified by Guangwen Feng <fenggw-fnst@cn.fujitsu.com>
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*/
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#include <errno.h>
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#include <pwd.h>
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#include <string.h>
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#include <sys/mount.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "tst_test.h"
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#define FNAME1 "accessfile1"
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#define FNAME2 "accessfile2/accessfile2"
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#define DNAME "accessfile2"
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#define SNAME1 "symlink1"
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#define SNAME2 "symlink2"
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#define MNT_POINT "mntpoint"
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static uid_t uid;
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static char longpathname[PATH_MAX + 2];
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static struct tcase {
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const char *pathname;
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int mode;
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int exp_errno;
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} tcases[] = {
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{FNAME1, -1, EINVAL},
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{"", W_OK, ENOENT},
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{longpathname, R_OK, ENAMETOOLONG},
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{FNAME2, R_OK, ENOTDIR},
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{SNAME1, R_OK, ELOOP},
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{MNT_POINT, W_OK, EROFS}
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};
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static void access_test(struct tcase *tc, const char *user)
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{
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TST_EXP_FAIL(access(tc->pathname, tc->mode), tc->exp_errno,
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"access as %s", user);
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}
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static void verify_access(unsigned int n)
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{
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struct tcase *tc = tcases + n;
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pid_t pid;
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access_test(tc, "root");
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pid = SAFE_FORK();
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if (pid) {
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SAFE_WAITPID(pid, NULL, 0);
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} else {
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SAFE_SETUID(uid);
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access_test(tc, "nobody");
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}
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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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pw = SAFE_GETPWNAM("nobody");
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uid = pw->pw_uid;
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memset(longpathname, 'a', sizeof(longpathname) - 1);
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SAFE_TOUCH(FNAME1, 0333, NULL);
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SAFE_TOUCH(DNAME, 0644, NULL);
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SAFE_SYMLINK(SNAME1, SNAME2);
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SAFE_SYMLINK(SNAME2, SNAME1);
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}
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static struct tst_test test = {
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.tcnt = ARRAY_SIZE(tcases),
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.needs_root = 1,
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.forks_child = 1,
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.needs_rofs = 1,
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.mntpoint = MNT_POINT,
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.setup = setup,
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.test = verify_access,
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};
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