147 lines
4.4 KiB
C
147 lines
4.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2020 Linaro Limited. All rights reserved.
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* Author: Viresh Kumar <viresh.kumar@linaro.org>
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*/
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#ifndef FSMOUNT_H__
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#define FSMOUNT_H__
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#include <sys/mount.h>
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#include <sys/syscall.h>
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#include <sys/types.h>
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#include "config.h"
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#include "lapi/fcntl.h"
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#include "lapi/syscalls.h"
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#ifndef HAVE_FSOPEN
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static inline int fsopen(const char *fsname, unsigned int flags)
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{
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return tst_syscall(__NR_fsopen, fsname, flags);
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}
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#endif /* HAVE_FSOPEN */
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#ifndef HAVE_FSCONFIG
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static inline int fsconfig(int fd, unsigned int cmd, const char *key,
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const void *value, int aux)
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{
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return tst_syscall(__NR_fsconfig, fd, cmd, key, value, aux);
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}
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#endif /* HAVE_FSCONFIG */
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#ifndef HAVE_FSMOUNT
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static inline int fsmount(int fd, unsigned int flags, unsigned int mount_attrs)
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{
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return tst_syscall(__NR_fsmount, fd, flags, mount_attrs);
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}
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#endif /* HAVE_FSMOUNT */
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#ifndef HAVE_FSPICK
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static inline int fspick(int dirfd, const char *pathname, unsigned int flags)
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{
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return tst_syscall(__NR_fspick, dirfd, pathname, flags);
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}
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#endif /* HAVE_FSPICK */
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#ifndef HAVE_MOVE_MOUNT
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static inline int move_mount(int from_dirfd, const char *from_pathname,
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int to_dirfd, const char *to_pathname,
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unsigned int flags)
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{
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return tst_syscall(__NR_move_mount, from_dirfd, from_pathname, to_dirfd,
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to_pathname, flags);
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}
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#endif /* HAVE_MOVE_MOUNT */
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#ifndef HAVE_OPEN_TREE
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static inline int open_tree(int dirfd, const char *pathname, unsigned int flags)
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{
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return tst_syscall(__NR_open_tree, dirfd, pathname, flags);
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}
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#endif /* HAVE_OPEN_TREE */
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/*
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* New headers added in kernel after 5.2 release, create them for old userspace.
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*/
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#ifndef OPEN_TREE_CLONE
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/*
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* open_tree() flags.
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*/
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#define OPEN_TREE_CLONE 1 /* Clone the target tree and attach the clone */
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#define OPEN_TREE_CLOEXEC O_CLOEXEC /* Close the file on execve() */
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/*
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* move_mount() flags.
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*/
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#define MOVE_MOUNT_F_SYMLINKS 0x00000001 /* Follow symlinks on from path */
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#define MOVE_MOUNT_F_AUTOMOUNTS 0x00000002 /* Follow automounts on from path */
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#define MOVE_MOUNT_F_EMPTY_PATH 0x00000004 /* Empty from path permitted */
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#define MOVE_MOUNT_T_SYMLINKS 0x00000010 /* Follow symlinks on to path */
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#define MOVE_MOUNT_T_AUTOMOUNTS 0x00000020 /* Follow automounts on to path */
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#define MOVE_MOUNT_T_EMPTY_PATH 0x00000040 /* Empty to path permitted */
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#define MOVE_MOUNT__MASK 0x00000077
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/*
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* fsopen() flags.
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*/
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#define FSOPEN_CLOEXEC 0x00000001
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/*
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* fspick() flags.
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*/
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#define FSPICK_CLOEXEC 0x00000001
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#define FSPICK_SYMLINK_NOFOLLOW 0x00000002
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#define FSPICK_NO_AUTOMOUNT 0x00000004
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#define FSPICK_EMPTY_PATH 0x00000008
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/*
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* The type of fsconfig() call made.
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*/
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enum fsconfig_command {
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FSCONFIG_SET_FLAG = 0, /* Set parameter, supplying no value */
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FSCONFIG_SET_STRING = 1, /* Set parameter, supplying a string value */
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FSCONFIG_SET_BINARY = 2, /* Set parameter, supplying a binary blob value */
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FSCONFIG_SET_PATH = 3, /* Set parameter, supplying an object by path */
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FSCONFIG_SET_PATH_EMPTY = 4, /* Set parameter, supplying an object by (empty) path */
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FSCONFIG_SET_FD = 5, /* Set parameter, supplying an object by fd */
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FSCONFIG_CMD_CREATE = 6, /* Invoke superblock creation */
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FSCONFIG_CMD_RECONFIGURE = 7, /* Invoke superblock reconfiguration */
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};
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/*
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* fsmount() flags.
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*/
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#define FSMOUNT_CLOEXEC 0x00000001
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/*
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* Mount attributes.
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*/
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#define MOUNT_ATTR_RDONLY 0x00000001 /* Mount read-only */
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#define MOUNT_ATTR_NOSUID 0x00000002 /* Ignore suid and sgid bits */
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#define MOUNT_ATTR_NODEV 0x00000004 /* Disallow access to device special files */
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#define MOUNT_ATTR_NOEXEC 0x00000008 /* Disallow program execution */
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#define MOUNT_ATTR__ATIME 0x00000070 /* Setting on how atime should be updated */
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#define MOUNT_ATTR_RELATIME 0x00000000 /* - Update atime relative to mtime/ctime. */
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#define MOUNT_ATTR_NOATIME 0x00000010 /* - Do not update access times. */
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#define MOUNT_ATTR_STRICTATIME 0x00000020 /* - Always perform atime updates */
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#define MOUNT_ATTR_NODIRATIME 0x00000080 /* Do not update directory access times */
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#endif /* OPEN_TREE_CLONE */
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static inline void fsopen_supported_by_kernel(void)
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{
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if ((tst_kvercmp(5, 2, 0)) < 0) {
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/* Check if the syscall is backported on an older kernel */
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TEST(syscall(__NR_fsopen, NULL, 0));
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if (TST_RET != -1)
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SAFE_CLOSE(TST_RET);
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else if (TST_ERR == ENOSYS)
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tst_brk(TCONF, "Test not supported on kernel version < v5.2");
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}
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}
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#endif /* FSMOUNT_H__ */
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