135 lines
3.2 KiB
C
135 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2022 FUJITSU LIMITED. All rights reserved.
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* Author: Dai Shili <daisl.fnst@fujitsu.com>
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* Author: Chen Hanxiao <chenhx.fnst@fujitsu.com>
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*/
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/*\
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* [Description]
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*
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* Basic mount_setattr() test.
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* Test whether the basic mount attributes are set correctly.
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*
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* Verify some MOUNT_SETATTR(2) attributes:
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*
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* - MOUNT_ATTR_RDONLY - makes the mount read-only
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* - MOUNT_ATTR_NOSUID - causes the mount not to honor the
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* set-user-ID and set-group-ID mode bits and file capabilities
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* when executing programs.
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* - MOUNT_ATTR_NODEV - prevents access to devices on this mount
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* - MOUNT_ATTR_NOEXEC - prevents executing programs on this mount
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* - MOUNT_ATTR_NOSYMFOLLOW - prevents following symbolic links
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* on this mount
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* - MOUNT_ATTR_NODIRATIME - prevents updating access time for
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* directories on this mount
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*
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* The functionality was added in v5.12.
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*/
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#define _GNU_SOURCE
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#include <sys/statvfs.h>
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#include "tst_test.h"
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#include "lapi/fsmount.h"
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#include "lapi/stat.h"
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#define MNTPOINT "mntpoint"
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#define OT_MNTPOINT "ot_mntpoint"
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#define TCASE_ENTRY(attrs, exp_attrs) \
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{ \
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.name = #attrs, \
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.mount_attrs = attrs, \
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.expect_attrs = exp_attrs \
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}
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static int mount_flag, otfd = -1;
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static struct tcase {
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char *name;
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unsigned int mount_attrs;
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unsigned int expect_attrs;
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} tcases[] = {
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TCASE_ENTRY(MOUNT_ATTR_RDONLY, ST_RDONLY),
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TCASE_ENTRY(MOUNT_ATTR_NOSUID, ST_NOSUID),
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TCASE_ENTRY(MOUNT_ATTR_NODEV, ST_NODEV),
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TCASE_ENTRY(MOUNT_ATTR_NOEXEC, ST_NOEXEC),
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TCASE_ENTRY(MOUNT_ATTR_NOSYMFOLLOW, ST_NOSYMFOLLOW),
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TCASE_ENTRY(MOUNT_ATTR_NODIRATIME, ST_NODIRATIME),
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};
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static void cleanup(void)
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{
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if (otfd > -1)
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SAFE_CLOSE(otfd);
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if (mount_flag)
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SAFE_UMOUNT(OT_MNTPOINT);
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}
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static void setup(void)
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{
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fsopen_supported_by_kernel();
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struct stat st = {0};
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if (stat(OT_MNTPOINT, &st) == -1)
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SAFE_MKDIR(OT_MNTPOINT, 0777);
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}
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static void run(unsigned int n)
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{
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struct tcase *tc = &tcases[n];
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struct mount_attr attr = {
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.attr_set = tc->mount_attrs,
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};
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struct statvfs buf;
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TST_EXP_FD_SILENT(open_tree(AT_FDCWD, MNTPOINT, AT_EMPTY_PATH |
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AT_SYMLINK_NOFOLLOW | OPEN_TREE_CLOEXEC | OPEN_TREE_CLONE));
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if (!TST_PASS)
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return;
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otfd = (int)TST_RET;
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TST_EXP_PASS_SILENT(mount_setattr(otfd, "", AT_EMPTY_PATH, &attr, sizeof(attr)),
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"%s set", tc->name);
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if (!TST_PASS)
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goto out1;
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TST_EXP_PASS_SILENT(move_mount(otfd, "", AT_FDCWD, OT_MNTPOINT, MOVE_MOUNT_F_EMPTY_PATH));
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if (!TST_PASS)
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goto out1;
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mount_flag = 1;
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SAFE_CLOSE(otfd);
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TST_EXP_PASS_SILENT(statvfs(OT_MNTPOINT, &buf), "statvfs sucess");
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if (!TST_PASS)
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goto out2;
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if (buf.f_flag & tc->expect_attrs)
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tst_res(TPASS, "%s is actually set as expected", tc->name);
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else
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tst_res(TFAIL, "%s is not actually set as expected", tc->name);
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goto out2;
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out1:
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SAFE_CLOSE(otfd);
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out2:
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if (mount_flag)
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SAFE_UMOUNT(OT_MNTPOINT);
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mount_flag = 0;
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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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.test = run,
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.setup = setup,
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.cleanup = cleanup,
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.needs_root = 1,
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.mount_device = 1,
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.mntpoint = MNTPOINT,
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.all_filesystems = 1,
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.skip_filesystems = (const char *const []){"fuse", NULL},
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};
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