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- /* SPDX-License-Identifier: GPL-2.0-or-later */
- /* AFS common types
- *
- * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells ([email protected])
- */
- #ifndef AFS_H
- #define AFS_H
- #include <linux/in.h>
- #define AFS_MAXCELLNAME 256 /* Maximum length of a cell name */
- #define AFS_MAXVOLNAME 64 /* Maximum length of a volume name */
- #define AFS_MAXNSERVERS 8 /* Maximum servers in a basic volume record */
- #define AFS_NMAXNSERVERS 13 /* Maximum servers in a N/U-class volume record */
- #define AFS_MAXTYPES 3 /* Maximum number of volume types */
- #define AFSNAMEMAX 256 /* Maximum length of a filename plus NUL */
- #define AFSPATHMAX 1024 /* Maximum length of a pathname plus NUL */
- #define AFSOPAQUEMAX 1024 /* Maximum length of an opaque field */
- #define AFS_VL_MAX_LIFESPAN (120 * HZ)
- #define AFS_PROBE_MAX_LIFESPAN (30 * HZ)
- typedef u64 afs_volid_t;
- typedef u64 afs_vnodeid_t;
- typedef u64 afs_dataversion_t;
- typedef enum {
- AFSVL_RWVOL, /* read/write volume */
- AFSVL_ROVOL, /* read-only volume */
- AFSVL_BACKVOL, /* backup volume */
- } __attribute__((packed)) afs_voltype_t;
- typedef enum {
- AFS_FTYPE_INVALID = 0,
- AFS_FTYPE_FILE = 1,
- AFS_FTYPE_DIR = 2,
- AFS_FTYPE_SYMLINK = 3,
- } afs_file_type_t;
- typedef enum {
- AFS_LOCK_READ = 0, /* read lock request */
- AFS_LOCK_WRITE = 1, /* write lock request */
- } afs_lock_type_t;
- #define AFS_LOCKWAIT (5 * 60) /* time until a lock times out (seconds) */
- /*
- * AFS file identifier
- */
- struct afs_fid {
- afs_volid_t vid; /* volume ID */
- afs_vnodeid_t vnode; /* Lower 64-bits of file index within volume */
- u32 vnode_hi; /* Upper 32-bits of file index */
- u32 unique; /* unique ID number (file index version) */
- };
- /*
- * AFS callback notification
- */
- typedef enum {
- AFSCM_CB_UNTYPED = 0, /* no type set on CB break */
- AFSCM_CB_EXCLUSIVE = 1, /* CB exclusive to CM [not implemented] */
- AFSCM_CB_SHARED = 2, /* CB shared by other CM's */
- AFSCM_CB_DROPPED = 3, /* CB promise cancelled by file server */
- } afs_callback_type_t;
- struct afs_callback {
- time64_t expires_at; /* Time at which expires */
- //unsigned version; /* Callback version */
- //afs_callback_type_t type; /* Type of callback */
- };
- struct afs_callback_break {
- struct afs_fid fid; /* File identifier */
- //struct afs_callback cb; /* Callback details */
- };
- #define AFSCBMAX 50 /* maximum callbacks transferred per bulk op */
- struct afs_uuid {
- __be32 time_low; /* low part of timestamp */
- __be16 time_mid; /* mid part of timestamp */
- __be16 time_hi_and_version; /* high part of timestamp and version */
- __s8 clock_seq_hi_and_reserved; /* clock seq hi and variant */
- __s8 clock_seq_low; /* clock seq low */
- __s8 node[6]; /* spatially unique node ID (MAC addr) */
- };
- /*
- * AFS volume information
- */
- struct afs_volume_info {
- afs_volid_t vid; /* volume ID */
- afs_voltype_t type; /* type of this volume */
- afs_volid_t type_vids[5]; /* volume ID's for possible types for this vol */
- /* list of fileservers serving this volume */
- size_t nservers; /* number of entries used in servers[] */
- struct {
- struct in_addr addr; /* fileserver address */
- } servers[8];
- };
- /*
- * AFS security ACE access mask
- */
- typedef u32 afs_access_t;
- #define AFS_ACE_READ 0x00000001U /* - permission to read a file/dir */
- #define AFS_ACE_WRITE 0x00000002U /* - permission to write/chmod a file */
- #define AFS_ACE_INSERT 0x00000004U /* - permission to create dirent in a dir */
- #define AFS_ACE_LOOKUP 0x00000008U /* - permission to lookup a file/dir in a dir */
- #define AFS_ACE_DELETE 0x00000010U /* - permission to delete a dirent from a dir */
- #define AFS_ACE_LOCK 0x00000020U /* - permission to lock a file */
- #define AFS_ACE_ADMINISTER 0x00000040U /* - permission to change ACL */
- #define AFS_ACE_USER_A 0x01000000U /* - 'A' user-defined permission */
- #define AFS_ACE_USER_B 0x02000000U /* - 'B' user-defined permission */
- #define AFS_ACE_USER_C 0x04000000U /* - 'C' user-defined permission */
- #define AFS_ACE_USER_D 0x08000000U /* - 'D' user-defined permission */
- #define AFS_ACE_USER_E 0x10000000U /* - 'E' user-defined permission */
- #define AFS_ACE_USER_F 0x20000000U /* - 'F' user-defined permission */
- #define AFS_ACE_USER_G 0x40000000U /* - 'G' user-defined permission */
- #define AFS_ACE_USER_H 0x80000000U /* - 'H' user-defined permission */
- /*
- * AFS file status information
- */
- struct afs_file_status {
- u64 size; /* file size */
- afs_dataversion_t data_version; /* current data version */
- struct timespec64 mtime_client; /* Last time client changed data */
- struct timespec64 mtime_server; /* Last time server changed data */
- s64 author; /* author ID */
- s64 owner; /* owner ID */
- s64 group; /* group ID */
- afs_access_t caller_access; /* access rights for authenticated caller */
- afs_access_t anon_access; /* access rights for unauthenticated caller */
- umode_t mode; /* UNIX mode */
- afs_file_type_t type; /* file type */
- u32 nlink; /* link count */
- s32 lock_count; /* file lock count (0=UNLK -1=WRLCK +ve=#RDLCK */
- u32 abort_code; /* Abort if bulk-fetching this failed */
- };
- struct afs_status_cb {
- struct afs_file_status status;
- struct afs_callback callback;
- bool have_status; /* True if status record was retrieved */
- bool have_cb; /* True if cb record was retrieved */
- bool have_error; /* True if status.abort_code indicates an error */
- };
- /*
- * AFS file status change request
- */
- #define AFS_SET_MTIME 0x01 /* set the mtime */
- #define AFS_SET_OWNER 0x02 /* set the owner ID */
- #define AFS_SET_GROUP 0x04 /* set the group ID (unsupported?) */
- #define AFS_SET_MODE 0x08 /* set the UNIX mode */
- #define AFS_SET_SEG_SIZE 0x10 /* set the segment size (unsupported) */
- /*
- * AFS volume synchronisation information
- */
- struct afs_volsync {
- time64_t creation; /* volume creation time */
- };
- /*
- * AFS volume status record
- */
- struct afs_volume_status {
- afs_volid_t vid; /* volume ID */
- afs_volid_t parent_id; /* parent volume ID */
- u8 online; /* true if volume currently online and available */
- u8 in_service; /* true if volume currently in service */
- u8 blessed; /* same as in_service */
- u8 needs_salvage; /* true if consistency checking required */
- u32 type; /* volume type (afs_voltype_t) */
- u64 min_quota; /* minimum space set aside (blocks) */
- u64 max_quota; /* maximum space this volume may occupy (blocks) */
- u64 blocks_in_use; /* space this volume currently occupies (blocks) */
- u64 part_blocks_avail; /* space available in volume's partition */
- u64 part_max_blocks; /* size of volume's partition */
- s64 vol_copy_date;
- s64 vol_backup_date;
- };
- #define AFS_BLOCK_SIZE 1024
- /*
- * XDR encoding of UUID in AFS.
- */
- struct afs_uuid__xdr {
- __be32 time_low;
- __be32 time_mid;
- __be32 time_hi_and_version;
- __be32 clock_seq_hi_and_reserved;
- __be32 clock_seq_low;
- __be32 node[6];
- };
- #endif /* AFS_H */
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