/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __SAMPLES_VFS_H #define __SAMPLES_VFS_H #include #include #include #include #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 */