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00d3b7a453
Add security support to the AFS filesystem. Kerberos IV tickets are added as RxRPC keys are added to the session keyring with the klog program. open() and other VFS operations then find this ticket with request_key() and either use it immediately (eg: mkdir, unlink) or attach it to a file descriptor (open). Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
129 lines
4.2 KiB
C
129 lines
4.2 KiB
C
/* AFS common types
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*
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* Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef AFS_H
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#define AFS_H
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#include <linux/in.h>
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#define AFS_MAXCELLNAME 64 /* maximum length of a cell name */
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#define AFS_MAXVOLNAME 64 /* maximum length of a volume name */
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typedef unsigned afs_volid_t;
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typedef unsigned afs_vnodeid_t;
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typedef unsigned long long afs_dataversion_t;
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typedef enum {
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AFSVL_RWVOL, /* read/write volume */
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AFSVL_ROVOL, /* read-only volume */
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AFSVL_BACKVOL, /* backup volume */
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} __attribute__((packed)) afs_voltype_t;
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typedef enum {
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AFS_FTYPE_INVALID = 0,
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AFS_FTYPE_FILE = 1,
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AFS_FTYPE_DIR = 2,
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AFS_FTYPE_SYMLINK = 3,
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} afs_file_type_t;
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/*
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* AFS file identifier
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*/
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struct afs_fid {
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afs_volid_t vid; /* volume ID */
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afs_vnodeid_t vnode; /* file index within volume */
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unsigned unique; /* unique ID number (file index version) */
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};
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/*
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* AFS callback notification
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*/
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typedef enum {
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AFSCM_CB_UNTYPED = 0, /* no type set on CB break */
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AFSCM_CB_EXCLUSIVE = 1, /* CB exclusive to CM [not implemented] */
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AFSCM_CB_SHARED = 2, /* CB shared by other CM's */
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AFSCM_CB_DROPPED = 3, /* CB promise cancelled by file server */
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} afs_callback_type_t;
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struct afs_callback {
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struct afs_fid fid; /* file identifier */
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unsigned version; /* callback version */
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unsigned expiry; /* time at which expires */
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afs_callback_type_t type; /* type of callback */
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};
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#define AFSCBMAX 50 /* maximum callbacks transferred per bulk op */
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/*
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* AFS volume information
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*/
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struct afs_volume_info {
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afs_volid_t vid; /* volume ID */
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afs_voltype_t type; /* type of this volume */
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afs_volid_t type_vids[5]; /* volume ID's for possible types for this vol */
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/* list of fileservers serving this volume */
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size_t nservers; /* number of entries used in servers[] */
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struct {
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struct in_addr addr; /* fileserver address */
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} servers[8];
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};
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/*
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* AFS security ACE access mask
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*/
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typedef u32 afs_access_t;
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#define AFS_ACE_READ 0x00000001U /* - permission to read a file/dir */
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#define AFS_ACE_WRITE 0x00000002U /* - permission to write/chmod a file */
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#define AFS_ACE_INSERT 0x00000004U /* - permission to create dirent in a dir */
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#define AFS_ACE_LOOKUP 0x00000008U /* - permission to lookup a file/dir in a dir */
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#define AFS_ACE_DELETE 0x00000010U /* - permission to delete a dirent from a dir */
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#define AFS_ACE_LOCK 0x00000020U /* - permission to lock a file */
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#define AFS_ACE_ADMINISTER 0x00000040U /* - permission to change ACL */
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#define AFS_ACE_USER_A 0x01000000U /* - 'A' user-defined permission */
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#define AFS_ACE_USER_B 0x02000000U /* - 'B' user-defined permission */
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#define AFS_ACE_USER_C 0x04000000U /* - 'C' user-defined permission */
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#define AFS_ACE_USER_D 0x08000000U /* - 'D' user-defined permission */
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#define AFS_ACE_USER_E 0x10000000U /* - 'E' user-defined permission */
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#define AFS_ACE_USER_F 0x20000000U /* - 'F' user-defined permission */
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#define AFS_ACE_USER_G 0x40000000U /* - 'G' user-defined permission */
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#define AFS_ACE_USER_H 0x80000000U /* - 'H' user-defined permission */
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/*
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* AFS file status information
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*/
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struct afs_file_status {
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unsigned if_version; /* interface version */
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#define AFS_FSTATUS_VERSION 1
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afs_file_type_t type; /* file type */
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unsigned nlink; /* link count */
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size_t size; /* file size */
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afs_dataversion_t data_version; /* current data version */
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unsigned author; /* author ID */
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unsigned owner; /* owner ID */
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afs_access_t caller_access; /* access rights for authenticated caller */
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afs_access_t anon_access; /* access rights for unauthenticated caller */
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umode_t mode; /* UNIX mode */
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struct afs_fid parent; /* parent file ID */
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time_t mtime_client; /* last time client changed data */
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time_t mtime_server; /* last time server changed data */
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};
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/*
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* AFS volume synchronisation information
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*/
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struct afs_volsync {
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time_t creation; /* volume creation time */
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};
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#endif /* AFS_H */
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