--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __SAMPLES_VFS_H
+#define __SAMPLES_VFS_H
+
+#include <errno.h>
+#include <linux/types.h>
+#include <sys/ioctl.h>
+#include <sys/syscall.h>
+
+#define die_errno(format, ...) \
+ do { \
+ fprintf(stderr, "%m | %s: %d: %s: " format "\n", __FILE__, \
+ __LINE__, __func__, ##__VA_ARGS__); \
+ exit(EXIT_FAILURE); \
+ } while (0)
+
+struct statmount {
+ __u32 size; /* Total size, including strings */
+ __u32 mnt_opts; /* [str] Options (comma separated, escaped) */
+ __u64 mask; /* What results were written */
+ __u32 sb_dev_major; /* Device ID */
+ __u32 sb_dev_minor;
+ __u64 sb_magic; /* ..._SUPER_MAGIC */
+ __u32 sb_flags; /* SB_{RDONLY,SYNCHRONOUS,DIRSYNC,LAZYTIME} */
+ __u32 fs_type; /* [str] Filesystem type */
+ __u64 mnt_id; /* Unique ID of mount */
+ __u64 mnt_parent_id; /* Unique ID of parent (for root == mnt_id) */
+ __u32 mnt_id_old; /* Reused IDs used in proc/.../mountinfo */
+ __u32 mnt_parent_id_old;
+ __u64 mnt_attr; /* MOUNT_ATTR_... */
+ __u64 mnt_propagation; /* MS_{SHARED,SLAVE,PRIVATE,UNBINDABLE} */
+ __u64 mnt_peer_group; /* ID of shared peer group */
+ __u64 mnt_master; /* Mount receives propagation from this ID */
+ __u64 propagate_from; /* Propagation from in current namespace */
+ __u32 mnt_root; /* [str] Root of mount relative to root of fs */
+ __u32 mnt_point; /* [str] Mountpoint relative to current root */
+ __u64 mnt_ns_id; /* ID of the mount namespace */
+ __u32 fs_subtype; /* [str] Subtype of fs_type (if any) */
+ __u32 sb_source; /* [str] Source string of the mount */
+ __u32 opt_num; /* Number of fs options */
+ __u32 opt_array; /* [str] Array of nul terminated fs options */
+ __u32 opt_sec_num; /* Number of security options */
+ __u32 opt_sec_array; /* [str] Array of nul terminated security options */
+ __u64 __spare2[46];
+ char str[]; /* Variable size part containing strings */
+};
+
+struct mnt_id_req {
+ __u32 size;
+ __u32 spare;
+ __u64 mnt_id;
+ __u64 param;
+ __u64 mnt_ns_id;
+};
+
+#ifndef MNT_ID_REQ_SIZE_VER0
+#define MNT_ID_REQ_SIZE_VER0 24 /* sizeof first published struct */
+#endif
+
+#ifndef MNT_ID_REQ_SIZE_VER1
+#define MNT_ID_REQ_SIZE_VER1 32 /* sizeof second published struct */
+#endif
+
+/* Get the id for a mount namespace */
+#ifndef NS_GET_MNTNS_ID
+#define NS_GET_MNTNS_ID _IO(0xb7, 0x5)
+#endif
+
+struct mnt_ns_info {
+ __u32 size;
+ __u32 nr_mounts;
+ __u64 mnt_ns_id;
+};
+
+#ifndef MNT_NS_INFO_SIZE_VER0
+#define MNT_NS_INFO_SIZE_VER0 16 /* size of first published struct */
+#endif
+
+#ifndef NS_MNT_GET_INFO
+#define NS_MNT_GET_INFO _IOR(0xb7, 10, struct mnt_ns_info)
+#endif
+
+#ifndef NS_MNT_GET_NEXT
+#define NS_MNT_GET_NEXT _IOR(0xb7, 11, struct mnt_ns_info)
+#endif
+
+#ifndef NS_MNT_GET_PREV
+#define NS_MNT_GET_PREV _IOR(0xb7, 12, struct mnt_ns_info)
+#endif
+
+#ifndef PIDFD_GET_MNT_NAMESPACE
+#define PIDFD_GET_MNT_NAMESPACE _IO(0xFF, 3)
+#endif
+
+#ifndef __NR_listmount
+#define __NR_listmount 458
+#endif
+
+#ifndef __NR_statmount
+#define __NR_statmount 457
+#endif
+
+#ifndef LSMT_ROOT
+#define LSMT_ROOT 0xffffffffffffffff /* root mount */
+#endif
+
+/* @mask bits for statmount(2) */
+#ifndef STATMOUNT_SB_BASIC
+#define STATMOUNT_SB_BASIC 0x00000001U /* Want/got sb_... */
+#endif
+
+#ifndef STATMOUNT_MNT_BASIC
+#define STATMOUNT_MNT_BASIC 0x00000002U /* Want/got mnt_... */
+#endif
+
+#ifndef STATMOUNT_PROPAGATE_FROM
+#define STATMOUNT_PROPAGATE_FROM 0x00000004U /* Want/got propagate_from */
+#endif
+
+#ifndef STATMOUNT_MNT_ROOT
+#define STATMOUNT_MNT_ROOT 0x00000008U /* Want/got mnt_root */
+#endif
+
+#ifndef STATMOUNT_MNT_POINT
+#define STATMOUNT_MNT_POINT 0x00000010U /* Want/got mnt_point */
+#endif
+
+#ifndef STATMOUNT_FS_TYPE
+#define STATMOUNT_FS_TYPE 0x00000020U /* Want/got fs_type */
+#endif
+
+#ifndef STATMOUNT_MNT_NS_ID
+#define STATMOUNT_MNT_NS_ID 0x00000040U /* Want/got mnt_ns_id */
+#endif
+
+#ifndef STATMOUNT_MNT_OPTS
+#define STATMOUNT_MNT_OPTS 0x00000080U /* Want/got mnt_opts */
+#endif
+
+#ifndef STATMOUNT_FS_SUBTYPE
+#define STATMOUNT_FS_SUBTYPE 0x00000100U /* Want/got fs_subtype */
+#endif
+
+#ifndef STATMOUNT_SB_SOURCE
+#define STATMOUNT_SB_SOURCE 0x00000200U /* Want/got sb_source */
+#endif
+
+#ifndef STATMOUNT_OPT_ARRAY
+#define STATMOUNT_OPT_ARRAY 0x00000400U /* Want/got opt_... */
+#endif
+
+#ifndef STATMOUNT_OPT_SEC_ARRAY
+#define STATMOUNT_OPT_SEC_ARRAY 0x00000800U /* Want/got opt_sec... */
+#endif
+
+#ifndef STATX_MNT_ID_UNIQUE
+#define STATX_MNT_ID_UNIQUE 0x00004000U /* Want/got extended stx_mount_id */
+#endif
+
+#ifndef MOUNT_ATTR_RDONLY
+#define MOUNT_ATTR_RDONLY 0x00000001 /* Mount read-only */
+#endif
+
+#ifndef MOUNT_ATTR_NOSUID
+#define MOUNT_ATTR_NOSUID 0x00000002 /* Ignore suid and sgid bits */
+#endif
+
+#ifndef MOUNT_ATTR_NODEV
+#define MOUNT_ATTR_NODEV 0x00000004 /* Disallow access to device special files */
+#endif
+
+#ifndef MOUNT_ATTR_NOEXEC
+#define MOUNT_ATTR_NOEXEC 0x00000008 /* Disallow program execution */
+#endif
+
+#ifndef MOUNT_ATTR__ATIME
+#define MOUNT_ATTR__ATIME 0x00000070 /* Setting on how atime should be updated */
+#endif
+
+#ifndef MOUNT_ATTR_RELATIME
+#define MOUNT_ATTR_RELATIME 0x00000000 /* - Update atime relative to mtime/ctime. */
+#endif
+
+#ifndef MOUNT_ATTR_NOATIME
+#define MOUNT_ATTR_NOATIME 0x00000010 /* - Do not update access times. */
+#endif
+
+#ifndef MOUNT_ATTR_STRICTATIME
+#define MOUNT_ATTR_STRICTATIME 0x00000020 /* - Always perform atime updates */
+#endif
+
+#ifndef MOUNT_ATTR_NODIRATIME
+#define MOUNT_ATTR_NODIRATIME 0x00000080 /* Do not update directory access times */
+#endif
+
+#ifndef MOUNT_ATTR_IDMAP
+#define MOUNT_ATTR_IDMAP 0x00100000 /* Idmap mount to @userns_fd in struct mount_attr. */
+#endif
+
+#ifndef MOUNT_ATTR_NOSYMFOLLOW
+#define MOUNT_ATTR_NOSYMFOLLOW 0x00200000 /* Do not follow symlinks */
+#endif
+
+#ifndef MS_RDONLY
+#define MS_RDONLY 1 /* Mount read-only */
+#endif
+
+#ifndef MS_SYNCHRONOUS
+#define MS_SYNCHRONOUS 16 /* Writes are synced at once */
+#endif
+
+#ifndef MS_MANDLOCK
+#define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */
+#endif
+
+#ifndef MS_DIRSYNC
+#define MS_DIRSYNC 128 /* Directory modifications are synchronous */
+#endif
+
+#ifndef MS_UNBINDABLE
+#define MS_UNBINDABLE (1<<17) /* change to unbindable */
+#endif
+
+#ifndef MS_PRIVATE
+#define MS_PRIVATE (1<<18) /* change to private */
+#endif
+
+#ifndef MS_SLAVE
+#define MS_SLAVE (1<<19) /* change to slave */
+#endif
+
+#ifndef MS_SHARED
+#define MS_SHARED (1<<20) /* change to shared */
+#endif
+
+#ifndef MS_LAZYTIME
+#define MS_LAZYTIME (1<<25) /* Update the on-disk [acm]times lazily */
+#endif
+
+#endif /* __SAMPLES_VFS_H */
#include <limits.h>
#include <linux/types.h>
#include <stdio.h>
-#include <sys/ioctl.h>
-#include <sys/syscall.h>
#include "../../tools/testing/selftests/pidfd/pidfd.h"
-
-#define die_errno(format, ...) \
- do { \
- fprintf(stderr, "%m | %s: %d: %s: " format "\n", __FILE__, \
- __LINE__, __func__, ##__VA_ARGS__); \
- exit(EXIT_FAILURE); \
- } while (0)
-
-/* Get the id for a mount namespace */
-#define NS_GET_MNTNS_ID _IO(0xb7, 0x5)
-/* Get next mount namespace. */
-
-struct mnt_ns_info {
- __u32 size;
- __u32 nr_mounts;
- __u64 mnt_ns_id;
-};
-
-#define MNT_NS_INFO_SIZE_VER0 16 /* size of first published struct */
-
-/* Get information about namespace. */
-#define NS_MNT_GET_INFO _IOR(0xb7, 10, struct mnt_ns_info)
-/* Get next namespace. */
-#define NS_MNT_GET_NEXT _IOR(0xb7, 11, struct mnt_ns_info)
-/* Get previous namespace. */
-#define NS_MNT_GET_PREV _IOR(0xb7, 12, struct mnt_ns_info)
-
-#define PIDFD_GET_MNT_NAMESPACE _IO(0xFF, 3)
-
-#ifndef __NR_listmount
-#define __NR_listmount 458
-#endif
-
-#ifndef __NR_statmount
-#define __NR_statmount 457
-#endif
-
-/* @mask bits for statmount(2) */
-#define STATMOUNT_SB_BASIC 0x00000001U /* Want/got sb_... */
-#define STATMOUNT_MNT_BASIC 0x00000002U /* Want/got mnt_... */
-#define STATMOUNT_PROPAGATE_FROM 0x00000004U /* Want/got propagate_from */
-#define STATMOUNT_MNT_ROOT 0x00000008U /* Want/got mnt_root */
-#define STATMOUNT_MNT_POINT 0x00000010U /* Want/got mnt_point */
-#define STATMOUNT_FS_TYPE 0x00000020U /* Want/got fs_type */
-#define STATMOUNT_MNT_NS_ID 0x00000040U /* Want/got mnt_ns_id */
-#define STATMOUNT_MNT_OPTS 0x00000080U /* Want/got mnt_opts */
-
-#define STATX_MNT_ID_UNIQUE 0x00004000U /* Want/got extended stx_mount_id */
-
-struct statmount {
- __u32 size;
- __u32 mnt_opts;
- __u64 mask;
- __u32 sb_dev_major;
- __u32 sb_dev_minor;
- __u64 sb_magic;
- __u32 sb_flags;
- __u32 fs_type;
- __u64 mnt_id;
- __u64 mnt_parent_id;
- __u32 mnt_id_old;
- __u32 mnt_parent_id_old;
- __u64 mnt_attr;
- __u64 mnt_propagation;
- __u64 mnt_peer_group;
- __u64 mnt_master;
- __u64 propagate_from;
- __u32 mnt_root;
- __u32 mnt_point;
- __u64 mnt_ns_id;
- __u64 __spare2[49];
- char str[];
-};
-
-struct mnt_id_req {
- __u32 size;
- __u32 spare;
- __u64 mnt_id;
- __u64 param;
- __u64 mnt_ns_id;
-};
-
-#define MNT_ID_REQ_SIZE_VER1 32 /* sizeof second published struct */
-
-#define LSMT_ROOT 0xffffffffffffffff /* root mount */
+#include "samples-vfs.h"
static int __statmount(__u64 mnt_id, __u64 mnt_ns_id, __u64 mask,
struct statmount *stmnt, size_t bufsize,
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