1 /* 2 * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> 3 */ 4 5 #ifndef LINUX_NFSD_VFS_H 6 #define LINUX_NFSD_VFS_H 7 8 #include "nfsfh.h" 9 10 /* 11 * Flags for nfsd_permission 12 */ 13 #define NFSD_MAY_NOP 0 14 #define NFSD_MAY_EXEC 0x001 /* == MAY_EXEC */ 15 #define NFSD_MAY_WRITE 0x002 /* == MAY_WRITE */ 16 #define NFSD_MAY_READ 0x004 /* == MAY_READ */ 17 #define NFSD_MAY_SATTR 0x008 18 #define NFSD_MAY_TRUNC 0x010 19 #define NFSD_MAY_LOCK 0x020 20 #define NFSD_MAY_MASK 0x03f 21 22 /* extra hints to permission and open routines: */ 23 #define NFSD_MAY_OWNER_OVERRIDE 0x040 24 #define NFSD_MAY_LOCAL_ACCESS 0x080 /* for device special files */ 25 #define NFSD_MAY_BYPASS_GSS_ON_ROOT 0x100 26 #define NFSD_MAY_NOT_BREAK_LEASE 0x200 27 #define NFSD_MAY_BYPASS_GSS 0x400 28 #define NFSD_MAY_READ_IF_EXEC 0x800 29 30 #define NFSD_MAY_64BIT_COOKIE 0x1000 /* 64 bit readdir cookies for >= NFSv3 */ 31 32 #define NFSD_MAY_CREATE (NFSD_MAY_EXEC|NFSD_MAY_WRITE) 33 #define NFSD_MAY_REMOVE (NFSD_MAY_EXEC|NFSD_MAY_WRITE|NFSD_MAY_TRUNC) 34 35 /* 36 * Callback function for readdir 37 */ 38 typedef int (*nfsd_dirop_t)(struct inode *, struct dentry *, int, int); 39 40 /* nfsd/vfs.c */ 41 int fh_lock_parent(struct svc_fh *, struct dentry *); 42 int nfsd_racache_init(int); 43 void nfsd_racache_shutdown(void); 44 int nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp, 45 struct svc_export **expp); 46 __be32 nfsd_lookup(struct svc_rqst *, struct svc_fh *, 47 const char *, unsigned int, struct svc_fh *); 48 __be32 nfsd_lookup_dentry(struct svc_rqst *, struct svc_fh *, 49 const char *, unsigned int, 50 struct svc_export **, struct dentry **); 51 __be32 nfsd_setattr(struct svc_rqst *, struct svc_fh *, 52 struct iattr *, int, time_t); 53 int nfsd_mountpoint(struct dentry *, struct svc_export *); 54 #ifdef CONFIG_NFSD_V4 55 __be32 nfsd4_set_nfs4_acl(struct svc_rqst *, struct svc_fh *, 56 struct nfs4_acl *); 57 int nfsd4_get_nfs4_acl(struct svc_rqst *, struct dentry *, struct nfs4_acl **); 58 #endif /* CONFIG_NFSD_V4 */ 59 __be32 nfsd_create(struct svc_rqst *, struct svc_fh *, 60 char *name, int len, struct iattr *attrs, 61 int type, dev_t rdev, struct svc_fh *res); 62 #ifdef CONFIG_NFSD_V3 63 __be32 nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *); 64 __be32 do_nfsd_create(struct svc_rqst *, struct svc_fh *, 65 char *name, int len, struct iattr *attrs, 66 struct svc_fh *res, int createmode, 67 u32 *verifier, bool *truncp, bool *created); 68 __be32 nfsd_commit(struct svc_rqst *, struct svc_fh *, 69 loff_t, unsigned long); 70 #endif /* CONFIG_NFSD_V3 */ 71 __be32 nfsd_open(struct svc_rqst *, struct svc_fh *, umode_t, 72 int, struct file **); 73 void nfsd_close(struct file *); 74 __be32 nfsd_read(struct svc_rqst *, struct svc_fh *, 75 loff_t, struct kvec *, int, unsigned long *); 76 __be32 nfsd_read_file(struct svc_rqst *, struct svc_fh *, struct file *, 77 loff_t, struct kvec *, int, unsigned long *); 78 __be32 nfsd_write(struct svc_rqst *, struct svc_fh *,struct file *, 79 loff_t, struct kvec *,int, unsigned long *, int *); 80 __be32 nfsd_readlink(struct svc_rqst *, struct svc_fh *, 81 char *, int *); 82 __be32 nfsd_symlink(struct svc_rqst *, struct svc_fh *, 83 char *name, int len, char *path, int plen, 84 struct svc_fh *res, struct iattr *); 85 __be32 nfsd_link(struct svc_rqst *, struct svc_fh *, 86 char *, int, struct svc_fh *); 87 __be32 nfsd_rename(struct svc_rqst *, 88 struct svc_fh *, char *, int, 89 struct svc_fh *, char *, int); 90 __be32 nfsd_remove(struct svc_rqst *, 91 struct svc_fh *, char *, int); 92 __be32 nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type, 93 char *name, int len); 94 int nfsd_truncate(struct svc_rqst *, struct svc_fh *, 95 unsigned long size); 96 __be32 nfsd_readdir(struct svc_rqst *, struct svc_fh *, 97 loff_t *, struct readdir_cd *, filldir_t); 98 __be32 nfsd_statfs(struct svc_rqst *, struct svc_fh *, 99 struct kstatfs *, int access); 100 101 int nfsd_notify_change(struct inode *, struct iattr *); 102 __be32 nfsd_permission(struct svc_rqst *, struct svc_export *, 103 struct dentry *, int); 104 int nfsd_sync_dir(struct dentry *dp); 105 106 #if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) 107 struct posix_acl *nfsd_get_posix_acl(struct svc_fh *, int); 108 int nfsd_set_posix_acl(struct svc_fh *, int, struct posix_acl *); 109 #endif 110 111 static inline int fh_want_write(struct svc_fh *fh) 112 { 113 int ret = mnt_want_write(fh->fh_export->ex_path.mnt); 114 115 if (!ret) 116 fh->fh_want_write = 1; 117 return ret; 118 } 119 120 static inline void fh_drop_write(struct svc_fh *fh) 121 { 122 if (fh->fh_want_write) { 123 fh->fh_want_write = 0; 124 mnt_drop_write(fh->fh_export->ex_path.mnt); 125 } 126 } 127 128 #endif /* LINUX_NFSD_VFS_H */ 129