| /* |
| * linux/include/linux/nfsd/nfsd.h |
| * |
| * Hodge-podge collection of knfsd-related stuff. |
| * I will sort this out later. |
| * |
| * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> |
| */ |
| |
| #ifndef LINUX_NFSD_NFSD_H |
| #define LINUX_NFSD_NFSD_H |
| |
| #include <linux/config.h> |
| #include <linux/types.h> |
| #include <linux/unistd.h> |
| #include <linux/dirent.h> |
| #include <linux/fs.h> |
| #include <linux/mount.h> |
| |
| #include <linux/nfsd/debug.h> |
| #include <linux/nfsd/nfsfh.h> |
| #include <linux/nfsd/export.h> |
| #include <linux/nfsd/auth.h> |
| #include <linux/nfsd/stats.h> |
| #include <linux/nfsd/interface.h> |
| /* |
| * nfsd version |
| */ |
| #define NFSD_VERSION "0.5" |
| #define NFSD_SUPPORTED_MINOR_VERSION 0 |
| |
| #ifdef __KERNEL__ |
| /* |
| * Special flags for nfsd_permission. These must be different from MAY_READ, |
| * MAY_WRITE, and MAY_EXEC. |
| */ |
| #define MAY_NOP 0 |
| #define MAY_SATTR 8 |
| #define MAY_TRUNC 16 |
| #define MAY_LOCK 32 |
| #define MAY_OWNER_OVERRIDE 64 |
| #define MAY_LOCAL_ACCESS 128 /* IRIX doing local access check on device special file*/ |
| #if (MAY_SATTR | MAY_TRUNC | MAY_LOCK | MAY_OWNER_OVERRIDE | MAY_LOCAL_ACCESS) & (MAY_READ | MAY_WRITE | MAY_EXEC) |
| # error "please use a different value for MAY_SATTR or MAY_TRUNC or MAY_LOCK or MAY_LOCAL_ACCESS or MAY_OWNER_OVERRIDE." |
| #endif |
| #define MAY_CREATE (MAY_EXEC|MAY_WRITE) |
| #define MAY_REMOVE (MAY_EXEC|MAY_WRITE|MAY_TRUNC) |
| |
| /* |
| * Callback function for readdir |
| */ |
| struct readdir_cd { |
| int err; /* 0, nfserr, or nfserr_eof */ |
| }; |
| typedef int (*encode_dent_fn)(struct readdir_cd *, const char *, |
| int, loff_t, ino_t, unsigned int); |
| typedef int (*nfsd_dirop_t)(struct inode *, struct dentry *, int, int); |
| |
| extern struct svc_program nfsd_program; |
| extern struct svc_version nfsd_version2, nfsd_version3, |
| nfsd_version4; |
| |
| /* |
| * Function prototypes. |
| */ |
| int nfsd_svc(unsigned short port, int nrservs); |
| int nfsd_dispatch(struct svc_rqst *rqstp, u32 *statp); |
| |
| /* nfsd/vfs.c */ |
| int fh_lock_parent(struct svc_fh *, struct dentry *); |
| int nfsd_racache_init(int); |
| void nfsd_racache_shutdown(void); |
| int nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp, |
| struct svc_export **expp); |
| int nfsd_lookup(struct svc_rqst *, struct svc_fh *, |
| const char *, int, struct svc_fh *); |
| int nfsd_setattr(struct svc_rqst *, struct svc_fh *, |
| struct iattr *, int, time_t); |
| #ifdef CONFIG_NFSD_V4 |
| int nfsd4_set_nfs4_acl(struct svc_rqst *, struct svc_fh *, |
| struct nfs4_acl *); |
| int nfsd4_get_nfs4_acl(struct svc_rqst *, struct dentry *, struct nfs4_acl **); |
| #endif /* CONFIG_NFSD_V4 */ |
| int nfsd_create(struct svc_rqst *, struct svc_fh *, |
| char *name, int len, struct iattr *attrs, |
| int type, dev_t rdev, struct svc_fh *res); |
| #ifdef CONFIG_NFSD_V3 |
| int nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *); |
| int nfsd_create_v3(struct svc_rqst *, struct svc_fh *, |
| char *name, int len, struct iattr *attrs, |
| struct svc_fh *res, int createmode, |
| u32 *verifier, int *truncp); |
| int nfsd_commit(struct svc_rqst *, struct svc_fh *, |
| loff_t, unsigned long); |
| #endif /* CONFIG_NFSD_V3 */ |
| int nfsd_open(struct svc_rqst *, struct svc_fh *, int, |
| int, struct file **); |
| void nfsd_close(struct file *); |
| int nfsd_read(struct svc_rqst *, struct svc_fh *, struct file *, |
| loff_t, struct kvec *, int, unsigned long *); |
| int nfsd_write(struct svc_rqst *, struct svc_fh *,struct file *, |
| loff_t, struct kvec *,int, unsigned long, int *); |
| int nfsd_readlink(struct svc_rqst *, struct svc_fh *, |
| char *, int *); |
| int nfsd_symlink(struct svc_rqst *, struct svc_fh *, |
| char *name, int len, char *path, int plen, |
| struct svc_fh *res, struct iattr *); |
| int nfsd_link(struct svc_rqst *, struct svc_fh *, |
| char *, int, struct svc_fh *); |
| int nfsd_rename(struct svc_rqst *, |
| struct svc_fh *, char *, int, |
| struct svc_fh *, char *, int); |
| int nfsd_remove(struct svc_rqst *, |
| struct svc_fh *, char *, int); |
| int nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type, |
| char *name, int len); |
| int nfsd_truncate(struct svc_rqst *, struct svc_fh *, |
| unsigned long size); |
| int nfsd_readdir(struct svc_rqst *, struct svc_fh *, |
| loff_t *, struct readdir_cd *, encode_dent_fn); |
| int nfsd_statfs(struct svc_rqst *, struct svc_fh *, |
| struct kstatfs *); |
| |
| int nfsd_notify_change(struct inode *, struct iattr *); |
| int nfsd_permission(struct svc_export *, struct dentry *, int); |
| |
| |
| /* |
| * NFSv4 State |
| */ |
| #ifdef CONFIG_NFSD_V4 |
| int nfs4_state_init(void); |
| void nfs4_state_shutdown(void); |
| time_t nfs4_lease_time(void); |
| void nfs4_reset_lease(time_t leasetime); |
| #else |
| static inline int nfs4_state_init(void){return 0;} |
| static inline void nfs4_state_shutdown(void){} |
| static inline time_t nfs4_lease_time(void){return 0;} |
| static inline void nfs4_reset_lease(time_t leasetime){} |
| #endif |
| |
| /* |
| * lockd binding |
| */ |
| void nfsd_lockd_init(void); |
| void nfsd_lockd_shutdown(void); |
| |
| |
| /* |
| * These macros provide pre-xdr'ed values for faster operation. |
| */ |
| #define nfs_ok __constant_htonl(NFS_OK) |
| #define nfserr_perm __constant_htonl(NFSERR_PERM) |
| #define nfserr_noent __constant_htonl(NFSERR_NOENT) |
| #define nfserr_io __constant_htonl(NFSERR_IO) |
| #define nfserr_nxio __constant_htonl(NFSERR_NXIO) |
| #define nfserr_eagain __constant_htonl(NFSERR_EAGAIN) |
| #define nfserr_acces __constant_htonl(NFSERR_ACCES) |
| #define nfserr_exist __constant_htonl(NFSERR_EXIST) |
| #define nfserr_xdev __constant_htonl(NFSERR_XDEV) |
| #define nfserr_nodev __constant_htonl(NFSERR_NODEV) |
| #define nfserr_notdir __constant_htonl(NFSERR_NOTDIR) |
| #define nfserr_isdir __constant_htonl(NFSERR_ISDIR) |
| #define nfserr_inval __constant_htonl(NFSERR_INVAL) |
| #define nfserr_fbig __constant_htonl(NFSERR_FBIG) |
| #define nfserr_nospc __constant_htonl(NFSERR_NOSPC) |
| #define nfserr_rofs __constant_htonl(NFSERR_ROFS) |
| #define nfserr_mlink __constant_htonl(NFSERR_MLINK) |
| #define nfserr_opnotsupp __constant_htonl(NFSERR_OPNOTSUPP) |
| #define nfserr_nametoolong __constant_htonl(NFSERR_NAMETOOLONG) |
| #define nfserr_notempty __constant_htonl(NFSERR_NOTEMPTY) |
| #define nfserr_dquot __constant_htonl(NFSERR_DQUOT) |
| #define nfserr_stale __constant_htonl(NFSERR_STALE) |
| #define nfserr_remote __constant_htonl(NFSERR_REMOTE) |
| #define nfserr_wflush __constant_htonl(NFSERR_WFLUSH) |
| #define nfserr_badhandle __constant_htonl(NFSERR_BADHANDLE) |
| #define nfserr_notsync __constant_htonl(NFSERR_NOT_SYNC) |
| #define nfserr_badcookie __constant_htonl(NFSERR_BAD_COOKIE) |
| #define nfserr_notsupp __constant_htonl(NFSERR_NOTSUPP) |
| #define nfserr_toosmall __constant_htonl(NFSERR_TOOSMALL) |
| #define nfserr_serverfault __constant_htonl(NFSERR_SERVERFAULT) |
| #define nfserr_badtype __constant_htonl(NFSERR_BADTYPE) |
| #define nfserr_jukebox __constant_htonl(NFSERR_JUKEBOX) |
| #define nfserr_denied __constant_htonl(NFSERR_DENIED) |
| #define nfserr_deadlock __constant_htonl(NFSERR_DEADLOCK) |
| #define nfserr_expired __constant_htonl(NFSERR_EXPIRED) |
| #define nfserr_bad_cookie __constant_htonl(NFSERR_BAD_COOKIE) |
| #define nfserr_same __constant_htonl(NFSERR_SAME) |
| #define nfserr_clid_inuse __constant_htonl(NFSERR_CLID_INUSE) |
| #define nfserr_stale_clientid __constant_htonl(NFSERR_STALE_CLIENTID) |
| #define nfserr_resource __constant_htonl(NFSERR_RESOURCE) |
| #define nfserr_nofilehandle __constant_htonl(NFSERR_NOFILEHANDLE) |
| #define nfserr_minor_vers_mismatch __constant_htonl(NFSERR_MINOR_VERS_MISMATCH) |
| #define nfserr_share_denied __constant_htonl(NFSERR_SHARE_DENIED) |
| #define nfserr_stale_stateid __constant_htonl(NFSERR_STALE_STATEID) |
| #define nfserr_old_stateid __constant_htonl(NFSERR_OLD_STATEID) |
| #define nfserr_bad_stateid __constant_htonl(NFSERR_BAD_STATEID) |
| #define nfserr_bad_seqid __constant_htonl(NFSERR_BAD_SEQID) |
| #define nfserr_symlink __constant_htonl(NFSERR_SYMLINK) |
| #define nfserr_not_same __constant_htonl(NFSERR_NOT_SAME) |
| #define nfserr_restorefh __constant_htonl(NFSERR_RESTOREFH) |
| #define nfserr_attrnotsupp __constant_htonl(NFSERR_ATTRNOTSUPP) |
| #define nfserr_bad_xdr __constant_htonl(NFSERR_BAD_XDR) |
| #define nfserr_openmode __constant_htonl(NFSERR_OPENMODE) |
| #define nfserr_locks_held __constant_htonl(NFSERR_LOCKS_HELD) |
| #define nfserr_op_illegal __constant_htonl(NFSERR_OP_ILLEGAL) |
| #define nfserr_grace __constant_htonl(NFSERR_GRACE) |
| #define nfserr_no_grace __constant_htonl(NFSERR_NO_GRACE) |
| #define nfserr_reclaim_bad __constant_htonl(NFSERR_RECLAIM_BAD) |
| #define nfserr_badname __constant_htonl(NFSERR_BADNAME) |
| #define nfserr_cb_path_down __constant_htonl(NFSERR_CB_PATH_DOWN) |
| |
| /* error codes for internal use */ |
| /* if a request fails due to kmalloc failure, it gets dropped. |
| * Client should resend eventually |
| */ |
| #define nfserr_dropit __constant_htonl(30000) |
| /* end-of-file indicator in readdir */ |
| #define nfserr_eof __constant_htonl(30001) |
| |
| /* Check for dir entries '.' and '..' */ |
| #define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.')) |
| |
| /* |
| * Time of server startup |
| */ |
| extern struct timeval nfssvc_boot; |
| |
| static inline int is_fsid(struct svc_fh *fh, struct knfsd_fh *reffh) |
| { |
| if (fh->fh_export->ex_flags & NFSEXP_FSID) { |
| struct vfsmount *mnt = fh->fh_export->ex_mnt; |
| if (!old_valid_dev(mnt->mnt_sb->s_dev) || |
| (reffh->fh_version == 1 && reffh->fh_fsid_type == 1)) |
| return 1; |
| } |
| return 0; |
| } |
| |
| |
| #ifdef CONFIG_NFSD_V4 |
| |
| /* before processing a COMPOUND operation, we have to check that there |
| * is enough space in the buffer for XDR encode to succeed. otherwise, |
| * we might process an operation with side effects, and be unable to |
| * tell the client that the operation succeeded. |
| * |
| * COMPOUND_SLACK_SPACE - this is the minimum amount of buffer space |
| * needed to encode an "ordinary" _successful_ operation. (GETATTR, |
| * READ, READDIR, and READLINK have their own buffer checks.) if we |
| * fall below this level, we fail the next operation with NFS4ERR_RESOURCE. |
| * |
| * COMPOUND_ERR_SLACK_SPACE - this is the minimum amount of buffer space |
| * needed to encode an operation which has failed with NFS4ERR_RESOURCE. |
| * care is taken to ensure that we never fall below this level for any |
| * reason. |
| */ |
| #define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */ |
| #define COMPOUND_ERR_SLACK_SPACE 12 /* OP_SETATTR */ |
| |
| #define NFSD_LEASE_TIME (nfs4_lease_time()) |
| #define NFSD_LAUNDROMAT_MINTIMEOUT 10 /* seconds */ |
| |
| /* |
| * The following attributes are currently not supported by the NFSv4 server: |
| * ARCHIVE (deprecated anyway) |
| * FS_LOCATIONS (will be supported eventually) |
| * HIDDEN (unlikely to be supported any time soon) |
| * MIMETYPE (unlikely to be supported any time soon) |
| * QUOTA_* (will be supported in a forthcoming patch) |
| * SYSTEM (unlikely to be supported any time soon) |
| * TIME_BACKUP (unlikely to be supported any time soon) |
| * TIME_CREATE (unlikely to be supported any time soon) |
| */ |
| #define NFSD_SUPPORTED_ATTRS_WORD0 \ |
| (FATTR4_WORD0_SUPPORTED_ATTRS | FATTR4_WORD0_TYPE | FATTR4_WORD0_FH_EXPIRE_TYPE \ |
| | FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE | FATTR4_WORD0_LINK_SUPPORT \ |
| | FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR | FATTR4_WORD0_FSID \ |
| | FATTR4_WORD0_UNIQUE_HANDLES | FATTR4_WORD0_LEASE_TIME | FATTR4_WORD0_RDATTR_ERROR \ |
| | FATTR4_WORD0_ACLSUPPORT | FATTR4_WORD0_CANSETTIME | FATTR4_WORD0_CASE_INSENSITIVE \ |
| | FATTR4_WORD0_CASE_PRESERVING | FATTR4_WORD0_CHOWN_RESTRICTED \ |
| | FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FILEID | FATTR4_WORD0_FILES_AVAIL \ |
| | FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_HOMOGENEOUS \ |
| | FATTR4_WORD0_MAXFILESIZE | FATTR4_WORD0_MAXLINK | FATTR4_WORD0_MAXNAME \ |
| | FATTR4_WORD0_MAXREAD | FATTR4_WORD0_MAXWRITE | FATTR4_WORD0_ACL) |
| |
| #define NFSD_SUPPORTED_ATTRS_WORD1 \ |
| (FATTR4_WORD1_MODE | FATTR4_WORD1_NO_TRUNC | FATTR4_WORD1_NUMLINKS \ |
| | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP | FATTR4_WORD1_RAWDEV \ |
| | FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL \ |
| | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS | FATTR4_WORD1_TIME_ACCESS_SET \ |
| | FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA \ |
| | FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID) |
| |
| /* These will return ERR_INVAL if specified in GETATTR or READDIR. */ |
| #define NFSD_WRITEONLY_ATTRS_WORD1 \ |
| (FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET) |
| |
| /* These are the only attrs allowed in CREATE/OPEN/SETATTR. */ |
| #define NFSD_WRITEABLE_ATTRS_WORD0 \ |
| (FATTR4_WORD0_SIZE | FATTR4_WORD0_ACL ) |
| #define NFSD_WRITEABLE_ATTRS_WORD1 \ |
| (FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP \ |
| | FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_METADATA | FATTR4_WORD1_TIME_MODIFY_SET) |
| |
| #endif /* CONFIG_NFSD_V4 */ |
| |
| #endif /* __KERNEL__ */ |
| |
| #endif /* LINUX_NFSD_NFSD_H */ |
