179 lines
3.9 KiB
C
179 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2012 Red Hat, Inc.
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*/
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/*
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* setxattr(2) to immutable and append-only files should get EPERM
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*
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* There are 2 test cases:
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* 1. Set attribute to a immutable file, setxattr(2) should return -1
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* and set errno to EPERM
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* 2. Set attribute to a append-only file, setxattr(2) should return
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* -1 and set errno to EPERM
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*/
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#define _GNU_SOURCE
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#include "config.h"
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_SYS_XATTR_H
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# include <sys/xattr.h>
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#endif
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#include "lapi/fs.h"
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#include "tst_test.h"
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#if defined HAVE_SYS_XATTR_H
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#define XATTR_TEST_KEY "user.testkey"
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#define XATTR_TEST_VALUE "this is a test value"
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#define XATTR_TEST_VALUE_SIZE (sizeof(XATTR_TEST_VALUE) - 1)
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#define IMMU_FILE "setxattr03immutable"
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#define APPEND_FILE "setxattr03appendonly"
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#define set_immutable_on(fd) fsetflag(fd, 1, 1)
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#define set_immutable_off(fd) fsetflag(fd, 0, 1)
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#define set_append_on(fd) fsetflag(fd, 1, 0)
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#define set_append_off(fd) fsetflag(fd, 0, 0)
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struct test_case {
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char *desc;
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char *fname;
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char *key;
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char *value;
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size_t size;
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int flags;
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int exp_err;
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};
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static struct test_case tc[] = {
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{ /* case 00, set attr to immutable file */
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.desc = "Set attr to immutable file",
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.fname = IMMU_FILE,
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.key = XATTR_TEST_KEY,
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.value = XATTR_TEST_VALUE,
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.size = XATTR_TEST_VALUE_SIZE,
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.flags = XATTR_CREATE,
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.exp_err = EPERM,
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},
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{ /* case 01, set attr to append-only file */
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.desc = "Set attr to append-only file",
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.fname = APPEND_FILE,
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.key = XATTR_TEST_KEY,
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.value = XATTR_TEST_VALUE,
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.size = XATTR_TEST_VALUE_SIZE,
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.flags = XATTR_CREATE,
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.exp_err = EPERM,
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},
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};
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static int immu_fd;
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static int append_fd;
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static void verify_setxattr(unsigned int i)
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{
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TEST(setxattr(tc[i].fname, tc[i].key, tc[i].value, tc[i].size,
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tc[i].flags));
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if (!TST_RET) {
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tst_res(TFAIL, "%s succeeded unexpectedly", tc[i].desc);
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return;
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}
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if (TST_ERR != tc[i].exp_err) {
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tst_res(TFAIL | TTERRNO, "%s - expected %s, got", tc[i].desc,
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tst_strerrno(tc[i].exp_err));
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return;
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}
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tst_res(TPASS | TTERRNO, "%s", tc[i].desc);
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}
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static int fsetflag(int fd, int on, int immutable)
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{
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int fsflags = 0;
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int fsfl;
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if (ioctl(fd, FS_IOC_GETFLAGS, &fsflags) < 0)
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return 1;
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if (immutable)
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fsfl = FS_IMMUTABLE_FL;
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else
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fsfl = FS_APPEND_FL;
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if (on)
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fsflags |= fsfl;
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else
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fsflags &= ~fsfl;
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if (ioctl(fd, FS_IOC_SETFLAGS, &fsflags) < 0)
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return 1;
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return 0;
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}
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static void setup(void)
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{
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int fd;
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/* Test for xattr support */
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fd = SAFE_CREAT("testfile", 0644);
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SAFE_CLOSE(fd);
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if (setxattr("testfile", "user.test", "test", 4, XATTR_CREATE) == -1)
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if (errno == ENOTSUP)
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tst_brk(TCONF, "No xattr support in fs or "
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"fs mounted without user_xattr option");
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SAFE_UNLINK("testfile");
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/* Create test files and set file immutable or append-only */
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immu_fd = SAFE_CREAT(IMMU_FILE, 0644);
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if (set_immutable_on(immu_fd))
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tst_brk(TBROK | TERRNO, "Set %s immutable failed",
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IMMU_FILE);
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append_fd = SAFE_CREAT(APPEND_FILE, 0644);
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if (set_append_on(append_fd))
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tst_brk(TBROK | TERRNO, "Set %s append-only failed",
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APPEND_FILE);
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}
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static void cleanup(void)
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{
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if ((immu_fd > 0) && set_immutable_off(immu_fd))
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tst_res(TWARN | TERRNO, "Unset %s immutable failed",
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IMMU_FILE);
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if ((append_fd > 0) && set_append_off(append_fd))
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tst_res(TWARN | TERRNO, "Unset %s append-only failed",
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APPEND_FILE);
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if (immu_fd > 0)
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SAFE_CLOSE(immu_fd);
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if (append_fd > 0)
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SAFE_CLOSE(append_fd);
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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 = verify_setxattr,
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.tcnt = ARRAY_SIZE(tc),
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.needs_tmpdir = 1,
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.needs_root = 1,
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};
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#else
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TST_TEST_TCONF("<sys/xattr.h> does not exist");
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#endif /* defined HAVE_SYS_XATTR_H */
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