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 #include "nfsd.h" 10 11 /* 12 * Flags for nfsd_permission 13 */ 14 #define NFSD_MAY_NOP 0 15 #define NFSD_MAY_EXEC 0x001 /* == MAY_EXEC */ 16 #define NFSD_MAY_WRITE 0x002 /* == MAY_WRITE */ 17 #define NFSD_MAY_READ 0x004 /* == MAY_READ */ 18 #define NFSD_MAY_SATTR 0x008 19 #define NFSD_MAY_TRUNC 0x010 20 #define NFSD_MAY_LOCK 0x020 21 #define NFSD_MAY_MASK 0x03f 22 23 /* extra hints to permission and open routines: */ 24 #define NFSD_MAY_OWNER_OVERRIDE 0x040 25 #define NFSD_MAY_LOCAL_ACCESS 0x080 /* for device special files */ 26 #define NFSD_MAY_BYPASS_GSS_ON_ROOT 0x100 27 #define NFSD_MAY_NOT_BREAK_LEASE 0x200 28 #define NFSD_MAY_BYPASS_GSS 0x400 29 #define NFSD_MAY_READ_IF_EXEC 0x800 30 31 #define NFSD_MAY_64BIT_COOKIE 0x1000 /* 64 bit readdir cookies for >= NFSv3 */ 32 33 #define NFSD_MAY_CREATE (NFSD_MAY_EXEC|NFSD_MAY_WRITE) 34 #define NFSD_MAY_REMOVE (NFSD_MAY_EXEC|NFSD_MAY_WRITE|NFSD_MAY_TRUNC) 35 36 /* 37 * Callback function for readdir 38 */ 39 typedef int (*nfsd_dirop_t)(struct inode *, struct dentry *, int, int); 40 41 /* nfsd/vfs.c */ 42 int fh_lock_parent(struct svc_fh *, struct dentry *); 43 int nfsd_racache_init(int); 44 void nfsd_racache_shutdown(void); 45 int nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp, 46 struct svc_export **expp); 47 __be32 nfsd_lookup(struct svc_rqst *, struct svc_fh *, 48 const char *, unsigned int, struct svc_fh *); 49 __be32 nfsd_lookup_dentry(struct svc_rqst *, struct svc_fh *, 50 const char *, unsigned int, 51 struct svc_export **, struct dentry **); 52 __be32 nfsd_setattr(struct svc_rqst *, struct svc_fh *, 53 struct iattr *, int, time_t); 54 int nfsd_mountpoint(struct dentry *, struct svc_export *); 55 #ifdef CONFIG_NFSD_V4 56 __be32 nfsd4_set_nfs4_acl(struct svc_rqst *, struct svc_fh *, 57 struct nfs4_acl *); 58 int nfsd4_get_nfs4_acl(struct svc_rqst *, struct dentry *, struct nfs4_acl **); 59 #endif /* CONFIG_NFSD_V4 */ 60 __be32 nfsd_create(struct svc_rqst *, struct svc_fh *, 61 char *name, int len, struct iattr *attrs, 62 int type, dev_t rdev, struct svc_fh *res); 63 #ifdef CONFIG_NFSD_V3 64 __be32 nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *); 65 __be32 do_nfsd_create(struct svc_rqst *, struct svc_fh *, 66 char *name, int len, struct iattr *attrs, 67 struct svc_fh *res, int createmode, 68 u32 *verifier, bool *truncp, bool *created); 69 __be32 nfsd_commit(struct svc_rqst *, struct svc_fh *, 70 loff_t, unsigned long); 71 #endif /* CONFIG_NFSD_V3 */ 72 __be32 nfsd_open(struct svc_rqst *, struct svc_fh *, umode_t, 73 int, struct file **); 74 void nfsd_close(struct file *); 75 __be32 nfsd_read(struct svc_rqst *, struct svc_fh *, 76 loff_t, struct kvec *, int, unsigned long *); 77 __be32 nfsd_read_file(struct svc_rqst *, struct svc_fh *, struct file *, 78 loff_t, struct kvec *, int, unsigned long *); 79 __be32 nfsd_write(struct svc_rqst *, struct svc_fh *,struct file *, 80 loff_t, struct kvec *,int, unsigned long *, int *); 81 __be32 nfsd_readlink(struct svc_rqst *, struct svc_fh *, 82 char *, int *); 83 __be32 nfsd_symlink(struct svc_rqst *, struct svc_fh *, 84 char *name, int len, char *path, int plen, 85 struct svc_fh *res, struct iattr *); 86 __be32 nfsd_link(struct svc_rqst *, struct svc_fh *, 87 char *, int, struct svc_fh *); 88 __be32 nfsd_rename(struct svc_rqst *, 89 struct svc_fh *, char *, int, 90 struct svc_fh *, char *, int); 91 __be32 nfsd_remove(struct svc_rqst *, 92 struct svc_fh *, char *, int); 93 __be32 nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type, 94 char *name, int len); 95 int nfsd_truncate(struct svc_rqst *, struct svc_fh *, 96 unsigned long size); 97 __be32 nfsd_readdir(struct svc_rqst *, struct svc_fh *, 98 loff_t *, struct readdir_cd *, filldir_t); 99 __be32 nfsd_statfs(struct svc_rqst *, struct svc_fh *, 100 struct kstatfs *, int access); 101 102 int nfsd_notify_change(struct inode *, struct iattr *); 103 __be32 nfsd_permission(struct svc_rqst *, struct svc_export *, 104 struct dentry *, int); 105 int nfsd_sync_dir(struct dentry *dp); 106 107 #if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) 108 struct posix_acl *nfsd_get_posix_acl(struct svc_fh *, int); 109 int nfsd_set_posix_acl(struct svc_fh *, int, struct posix_acl *); 110 #endif 111 112 static inline int fh_want_write(struct svc_fh *fh) 113 { 114 int ret = mnt_want_write(fh->fh_export->ex_path.mnt); 115 116 if (!ret) 117 fh->fh_want_write = 1; 118 return ret; 119 } 120 121 static inline void fh_drop_write(struct svc_fh *fh) 122 { 123 if (fh->fh_want_write) { 124 fh->fh_want_write = 0; 125 mnt_drop_write(fh->fh_export->ex_path.mnt); 126 } 127 } 128 129 static inline __be32 fh_getattr(struct svc_fh *fh, struct kstat *stat) 130 { 131 struct path p = {.mnt = fh->fh_export->ex_path.mnt, 132 .dentry = fh->fh_dentry}; 133 return nfserrno(vfs_getattr(&p, stat)); 134 } 135 136 #endif /* LINUX_NFSD_VFS_H */ 137