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169 lines
5.8 KiB
169 lines
5.8 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright (C) 1995-1997 Olaf Kirch <[email protected]> |
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*/ |
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#ifndef LINUX_NFSD_VFS_H |
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#define LINUX_NFSD_VFS_H |
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#include "nfsfh.h" |
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#include "nfsd.h" |
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/* |
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* Flags for nfsd_permission |
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*/ |
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#define NFSD_MAY_NOP 0 |
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#define NFSD_MAY_EXEC 0x001 /* == MAY_EXEC */ |
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#define NFSD_MAY_WRITE 0x002 /* == MAY_WRITE */ |
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#define NFSD_MAY_READ 0x004 /* == MAY_READ */ |
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#define NFSD_MAY_SATTR 0x008 |
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#define NFSD_MAY_TRUNC 0x010 |
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#define NFSD_MAY_LOCK 0x020 |
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#define NFSD_MAY_MASK 0x03f |
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/* extra hints to permission and open routines: */ |
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#define NFSD_MAY_OWNER_OVERRIDE 0x040 |
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#define NFSD_MAY_LOCAL_ACCESS 0x080 /* for device special files */ |
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#define NFSD_MAY_BYPASS_GSS_ON_ROOT 0x100 |
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#define NFSD_MAY_NOT_BREAK_LEASE 0x200 |
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#define NFSD_MAY_BYPASS_GSS 0x400 |
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#define NFSD_MAY_READ_IF_EXEC 0x800 |
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#define NFSD_MAY_64BIT_COOKIE 0x1000 /* 64 bit readdir cookies for >= NFSv3 */ |
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#define NFSD_MAY_CREATE (NFSD_MAY_EXEC|NFSD_MAY_WRITE) |
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#define NFSD_MAY_REMOVE (NFSD_MAY_EXEC|NFSD_MAY_WRITE|NFSD_MAY_TRUNC) |
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struct nfsd_file; |
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/* |
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* Callback function for readdir |
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*/ |
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typedef int (*nfsd_filldir_t)(void *, const char *, int, loff_t, u64, unsigned); |
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/* nfsd/vfs.c */ |
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int nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp, |
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struct svc_export **expp); |
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__be32 nfsd_lookup(struct svc_rqst *, struct svc_fh *, |
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const char *, unsigned int, struct svc_fh *); |
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__be32 nfsd_lookup_dentry(struct svc_rqst *, struct svc_fh *, |
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const char *, unsigned int, |
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struct svc_export **, struct dentry **); |
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__be32 nfsd_setattr(struct svc_rqst *, struct svc_fh *, |
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struct iattr *, int, time64_t); |
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int nfsd_mountpoint(struct dentry *, struct svc_export *); |
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#ifdef CONFIG_NFSD_V4 |
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__be32 nfsd4_set_nfs4_label(struct svc_rqst *, struct svc_fh *, |
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struct xdr_netobj *); |
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__be32 nfsd4_vfs_fallocate(struct svc_rqst *, struct svc_fh *, |
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struct file *, loff_t, loff_t, int); |
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__be32 nfsd4_clone_file_range(struct nfsd_file *nf_src, u64 src_pos, |
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struct nfsd_file *nf_dst, u64 dst_pos, |
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u64 count, bool sync); |
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#endif /* CONFIG_NFSD_V4 */ |
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__be32 nfsd_create_locked(struct svc_rqst *, struct svc_fh *, |
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char *name, int len, struct iattr *attrs, |
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int type, dev_t rdev, struct svc_fh *res); |
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__be32 nfsd_create(struct svc_rqst *, struct svc_fh *, |
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char *name, int len, struct iattr *attrs, |
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int type, dev_t rdev, struct svc_fh *res); |
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#ifdef CONFIG_NFSD_V3 |
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__be32 nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *); |
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__be32 do_nfsd_create(struct svc_rqst *, struct svc_fh *, |
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char *name, int len, struct iattr *attrs, |
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struct svc_fh *res, int createmode, |
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u32 *verifier, bool *truncp, bool *created); |
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__be32 nfsd_commit(struct svc_rqst *, struct svc_fh *, |
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loff_t, unsigned long, __be32 *verf); |
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#endif /* CONFIG_NFSD_V3 */ |
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#ifdef CONFIG_NFSD_V4 |
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__be32 nfsd_getxattr(struct svc_rqst *rqstp, struct svc_fh *fhp, |
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char *name, void **bufp, int *lenp); |
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__be32 nfsd_listxattr(struct svc_rqst *rqstp, struct svc_fh *fhp, |
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char **bufp, int *lenp); |
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__be32 nfsd_removexattr(struct svc_rqst *rqstp, struct svc_fh *fhp, |
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char *name); |
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__be32 nfsd_setxattr(struct svc_rqst *rqstp, struct svc_fh *fhp, |
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char *name, void *buf, u32 len, u32 flags); |
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#endif |
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int nfsd_open_break_lease(struct inode *, int); |
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__be32 nfsd_open(struct svc_rqst *, struct svc_fh *, umode_t, |
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int, struct file **); |
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__be32 nfsd_open_verified(struct svc_rqst *, struct svc_fh *, umode_t, |
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int, struct file **); |
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__be32 nfsd_splice_read(struct svc_rqst *rqstp, struct svc_fh *fhp, |
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struct file *file, loff_t offset, |
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unsigned long *count, |
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u32 *eof); |
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__be32 nfsd_readv(struct svc_rqst *rqstp, struct svc_fh *fhp, |
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struct file *file, loff_t offset, |
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struct kvec *vec, int vlen, |
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unsigned long *count, |
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u32 *eof); |
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__be32 nfsd_read(struct svc_rqst *, struct svc_fh *, |
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loff_t, struct kvec *, int, unsigned long *, |
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u32 *eof); |
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__be32 nfsd_write(struct svc_rqst *, struct svc_fh *, loff_t, |
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struct kvec *, int, unsigned long *, |
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int stable, __be32 *verf); |
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__be32 nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, |
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struct nfsd_file *nf, loff_t offset, |
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struct kvec *vec, int vlen, unsigned long *cnt, |
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int stable, __be32 *verf); |
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__be32 nfsd_readlink(struct svc_rqst *, struct svc_fh *, |
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char *, int *); |
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__be32 nfsd_symlink(struct svc_rqst *, struct svc_fh *, |
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char *name, int len, char *path, |
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struct svc_fh *res); |
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__be32 nfsd_link(struct svc_rqst *, struct svc_fh *, |
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char *, int, struct svc_fh *); |
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ssize_t nfsd_copy_file_range(struct file *, u64, |
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struct file *, u64, u64); |
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__be32 nfsd_rename(struct svc_rqst *, |
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struct svc_fh *, char *, int, |
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struct svc_fh *, char *, int); |
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__be32 nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type, |
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char *name, int len); |
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__be32 nfsd_readdir(struct svc_rqst *, struct svc_fh *, |
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loff_t *, struct readdir_cd *, nfsd_filldir_t); |
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__be32 nfsd_statfs(struct svc_rqst *, struct svc_fh *, |
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struct kstatfs *, int access); |
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__be32 nfsd_permission(struct svc_rqst *, struct svc_export *, |
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struct dentry *, int); |
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static inline int fh_want_write(struct svc_fh *fh) |
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{ |
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int ret; |
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if (fh->fh_want_write) |
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return 0; |
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ret = mnt_want_write(fh->fh_export->ex_path.mnt); |
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if (!ret) |
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fh->fh_want_write = true; |
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return ret; |
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} |
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static inline void fh_drop_write(struct svc_fh *fh) |
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{ |
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if (fh->fh_want_write) { |
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fh->fh_want_write = false; |
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mnt_drop_write(fh->fh_export->ex_path.mnt); |
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} |
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} |
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static inline __be32 fh_getattr(struct svc_fh *fh, struct kstat *stat) |
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{ |
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struct path p = {.mnt = fh->fh_export->ex_path.mnt, |
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.dentry = fh->fh_dentry}; |
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return nfserrno(vfs_getattr(&p, stat, STATX_BASIC_STATS, |
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AT_STATX_SYNC_AS_STAT)); |
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} |
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static inline int nfsd_create_is_exclusive(int createmode) |
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{ |
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return createmode == NFS3_CREATE_EXCLUSIVE |
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|| createmode == NFS4_CREATE_EXCLUSIVE4_1; |
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} |
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#endif /* LINUX_NFSD_VFS_H */
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