^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #ifndef LINUX_NFSD_VFS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #define LINUX_NFSD_VFS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include "nfsfh.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "nfsd.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * Flags for nfsd_permission
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define NFSD_MAY_NOP 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define NFSD_MAY_EXEC 0x001 /* == MAY_EXEC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define NFSD_MAY_WRITE 0x002 /* == MAY_WRITE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define NFSD_MAY_READ 0x004 /* == MAY_READ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define NFSD_MAY_SATTR 0x008
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define NFSD_MAY_TRUNC 0x010
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define NFSD_MAY_LOCK 0x020
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define NFSD_MAY_MASK 0x03f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) /* extra hints to permission and open routines: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define NFSD_MAY_OWNER_OVERRIDE 0x040
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define NFSD_MAY_LOCAL_ACCESS 0x080 /* for device special files */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define NFSD_MAY_BYPASS_GSS_ON_ROOT 0x100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define NFSD_MAY_NOT_BREAK_LEASE 0x200
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define NFSD_MAY_BYPASS_GSS 0x400
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define NFSD_MAY_READ_IF_EXEC 0x800
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define NFSD_MAY_64BIT_COOKIE 0x1000 /* 64 bit readdir cookies for >= NFSv3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define NFSD_MAY_CREATE (NFSD_MAY_EXEC|NFSD_MAY_WRITE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define NFSD_MAY_REMOVE (NFSD_MAY_EXEC|NFSD_MAY_WRITE|NFSD_MAY_TRUNC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct nfsd_file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * Callback function for readdir
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) typedef int (*nfsd_filldir_t)(void *, const char *, int, loff_t, u64, unsigned);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /* nfsd/vfs.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) int nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct svc_export **expp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) __be32 nfsd_lookup(struct svc_rqst *, struct svc_fh *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) const char *, unsigned int, struct svc_fh *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) __be32 nfsd_lookup_dentry(struct svc_rqst *, struct svc_fh *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) const char *, unsigned int,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct svc_export **, struct dentry **);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) __be32 nfsd_setattr(struct svc_rqst *, struct svc_fh *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct iattr *, int, time64_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) int nfsd_mountpoint(struct dentry *, struct svc_export *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #ifdef CONFIG_NFSD_V4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) __be32 nfsd4_set_nfs4_label(struct svc_rqst *, struct svc_fh *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) struct xdr_netobj *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) __be32 nfsd4_vfs_fallocate(struct svc_rqst *, struct svc_fh *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) struct file *, loff_t, loff_t, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) __be32 nfsd4_clone_file_range(struct nfsd_file *nf_src, u64 src_pos,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct nfsd_file *nf_dst, u64 dst_pos,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) u64 count, bool sync);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #endif /* CONFIG_NFSD_V4 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) __be32 nfsd_create_locked(struct svc_rqst *, struct svc_fh *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) char *name, int len, struct iattr *attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) int type, dev_t rdev, struct svc_fh *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) __be32 nfsd_create(struct svc_rqst *, struct svc_fh *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) char *name, int len, struct iattr *attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) int type, dev_t rdev, struct svc_fh *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #ifdef CONFIG_NFSD_V3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) __be32 nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) __be32 do_nfsd_create(struct svc_rqst *, struct svc_fh *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) char *name, int len, struct iattr *attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct svc_fh *res, int createmode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) u32 *verifier, bool *truncp, bool *created);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) __be32 nfsd_commit(struct svc_rqst *, struct svc_fh *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) loff_t, unsigned long, __be32 *verf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #endif /* CONFIG_NFSD_V3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #ifdef CONFIG_NFSD_V4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) __be32 nfsd_getxattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) char *name, void **bufp, int *lenp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) __be32 nfsd_listxattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) char **bufp, int *lenp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) __be32 nfsd_removexattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) char *name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) __be32 nfsd_setxattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) char *name, void *buf, u32 len, u32 flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) int nfsd_open_break_lease(struct inode *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) __be32 nfsd_open(struct svc_rqst *, struct svc_fh *, umode_t,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) int, struct file **);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) __be32 nfsd_open_verified(struct svc_rqst *, struct svc_fh *, umode_t,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) int, struct file **);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) __be32 nfsd_splice_read(struct svc_rqst *rqstp, struct svc_fh *fhp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) struct file *file, loff_t offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) unsigned long *count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) u32 *eof);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) __be32 nfsd_readv(struct svc_rqst *rqstp, struct svc_fh *fhp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) struct file *file, loff_t offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct kvec *vec, int vlen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) unsigned long *count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) u32 *eof);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) __be32 nfsd_read(struct svc_rqst *, struct svc_fh *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) loff_t, struct kvec *, int, unsigned long *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) u32 *eof);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) __be32 nfsd_write(struct svc_rqst *, struct svc_fh *, loff_t,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct kvec *, int, unsigned long *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) int stable, __be32 *verf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) __be32 nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) struct nfsd_file *nf, loff_t offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) struct kvec *vec, int vlen, unsigned long *cnt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) int stable, __be32 *verf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) __be32 nfsd_readlink(struct svc_rqst *, struct svc_fh *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) char *, int *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) __be32 nfsd_symlink(struct svc_rqst *, struct svc_fh *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) char *name, int len, char *path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct svc_fh *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) __be32 nfsd_link(struct svc_rqst *, struct svc_fh *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) char *, int, struct svc_fh *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) ssize_t nfsd_copy_file_range(struct file *, u64,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct file *, u64, u64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) __be32 nfsd_rename(struct svc_rqst *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) struct svc_fh *, char *, int,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct svc_fh *, char *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) __be32 nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) char *name, int len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) __be32 nfsd_readdir(struct svc_rqst *, struct svc_fh *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) loff_t *, struct readdir_cd *, nfsd_filldir_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) __be32 nfsd_statfs(struct svc_rqst *, struct svc_fh *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct kstatfs *, int access);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) __be32 nfsd_permission(struct svc_rqst *, struct svc_export *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) struct dentry *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) static inline int fh_want_write(struct svc_fh *fh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) if (fh->fh_want_write)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) ret = mnt_want_write(fh->fh_export->ex_path.mnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) fh->fh_want_write = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) static inline void fh_drop_write(struct svc_fh *fh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (fh->fh_want_write) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) fh->fh_want_write = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) mnt_drop_write(fh->fh_export->ex_path.mnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static inline __be32 fh_getattr(struct svc_fh *fh, struct kstat *stat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct path p = {.mnt = fh->fh_export->ex_path.mnt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) .dentry = fh->fh_dentry};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) return nfserrno(vfs_getattr(&p, stat, STATX_BASIC_STATS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) AT_STATX_SYNC_AS_STAT));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) static inline int nfsd_create_is_exclusive(int createmode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) return createmode == NFS3_CREATE_EXCLUSIVE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) || createmode == NFS4_CREATE_EXCLUSIVE4_1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) #endif /* LINUX_NFSD_VFS_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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