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-rw-r--r--fs/nfsd/vfs.h178
1 files changed, 178 insertions, 0 deletions
diff --git a/fs/nfsd/vfs.h b/fs/nfsd/vfs.h
new file mode 100644
index 000000000..9744b0411
--- /dev/null
+++ b/fs/nfsd/vfs.h
@@ -0,0 +1,178 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
+ */
+
+#ifndef LINUX_NFSD_VFS_H
+#define LINUX_NFSD_VFS_H
+
+#include <linux/fs.h>
+#include <linux/posix_acl.h>
+#include "nfsfh.h"
+#include "nfsd.h"
+
+/*
+ * Flags for nfsd_permission
+ */
+#define NFSD_MAY_NOP 0
+#define NFSD_MAY_EXEC 0x001 /* == MAY_EXEC */
+#define NFSD_MAY_WRITE 0x002 /* == MAY_WRITE */
+#define NFSD_MAY_READ 0x004 /* == MAY_READ */
+#define NFSD_MAY_SATTR 0x008
+#define NFSD_MAY_TRUNC 0x010
+#define NFSD_MAY_LOCK 0x020
+#define NFSD_MAY_MASK 0x03f
+
+/* extra hints to permission and open routines: */
+#define NFSD_MAY_OWNER_OVERRIDE 0x040
+#define NFSD_MAY_LOCAL_ACCESS 0x080 /* for device special files */
+#define NFSD_MAY_BYPASS_GSS_ON_ROOT 0x100
+#define NFSD_MAY_NOT_BREAK_LEASE 0x200
+#define NFSD_MAY_BYPASS_GSS 0x400
+#define NFSD_MAY_READ_IF_EXEC 0x800
+
+#define NFSD_MAY_64BIT_COOKIE 0x1000 /* 64 bit readdir cookies for >= NFSv3 */
+
+#define NFSD_MAY_CREATE (NFSD_MAY_EXEC|NFSD_MAY_WRITE)
+#define NFSD_MAY_REMOVE (NFSD_MAY_EXEC|NFSD_MAY_WRITE|NFSD_MAY_TRUNC)
+
+struct nfsd_file;
+
+/*
+ * Callback function for readdir
+ */
+typedef int (*nfsd_filldir_t)(void *, const char *, int, loff_t, u64, unsigned);
+
+/* nfsd/vfs.c */
+struct nfsd_attrs {
+ struct iattr *na_iattr; /* input */
+ struct xdr_netobj *na_seclabel; /* input */
+ struct posix_acl *na_pacl; /* input */
+ struct posix_acl *na_dpacl; /* input */
+
+ int na_labelerr; /* output */
+ int na_aclerr; /* output */
+};
+
+static inline void nfsd_attrs_free(struct nfsd_attrs *attrs)
+{
+ posix_acl_release(attrs->na_pacl);
+ posix_acl_release(attrs->na_dpacl);
+}
+
+int nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
+ struct svc_export **expp);
+__be32 nfsd_lookup(struct svc_rqst *, struct svc_fh *,
+ const char *, unsigned int, struct svc_fh *);
+__be32 nfsd_lookup_dentry(struct svc_rqst *, struct svc_fh *,
+ const char *, unsigned int,
+ struct svc_export **, struct dentry **);
+__be32 nfsd_setattr(struct svc_rqst *, struct svc_fh *,
+ struct nfsd_attrs *, int, time64_t);
+int nfsd_mountpoint(struct dentry *, struct svc_export *);
+#ifdef CONFIG_NFSD_V4
+__be32 nfsd4_vfs_fallocate(struct svc_rqst *, struct svc_fh *,
+ struct file *, loff_t, loff_t, int);
+__be32 nfsd4_clone_file_range(struct svc_rqst *rqstp,
+ struct nfsd_file *nf_src, u64 src_pos,
+ struct nfsd_file *nf_dst, u64 dst_pos,
+ u64 count, bool sync);
+#endif /* CONFIG_NFSD_V4 */
+__be32 nfsd_create_locked(struct svc_rqst *, struct svc_fh *,
+ struct nfsd_attrs *attrs, int type, dev_t rdev,
+ struct svc_fh *res);
+__be32 nfsd_create(struct svc_rqst *, struct svc_fh *,
+ char *name, int len, struct nfsd_attrs *attrs,
+ int type, dev_t rdev, struct svc_fh *res);
+__be32 nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *);
+__be32 nfsd_create_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
+ struct svc_fh *resfhp, struct nfsd_attrs *iap);
+__be32 nfsd_commit(struct svc_rqst *rqst, struct svc_fh *fhp,
+ struct nfsd_file *nf, u64 offset, u32 count,
+ __be32 *verf);
+#ifdef CONFIG_NFSD_V4
+__be32 nfsd_getxattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
+ char *name, void **bufp, int *lenp);
+__be32 nfsd_listxattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
+ char **bufp, int *lenp);
+__be32 nfsd_removexattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
+ char *name);
+__be32 nfsd_setxattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
+ char *name, void *buf, u32 len, u32 flags);
+#endif
+int nfsd_open_break_lease(struct inode *, int);
+__be32 nfsd_open(struct svc_rqst *, struct svc_fh *, umode_t,
+ int, struct file **);
+__be32 nfsd_open_verified(struct svc_rqst *, struct svc_fh *,
+ int, struct file **);
+__be32 nfsd_splice_read(struct svc_rqst *rqstp, struct svc_fh *fhp,
+ struct file *file, loff_t offset,
+ unsigned long *count,
+ u32 *eof);
+__be32 nfsd_readv(struct svc_rqst *rqstp, struct svc_fh *fhp,
+ struct file *file, loff_t offset,
+ struct kvec *vec, int vlen,
+ unsigned long *count,
+ u32 *eof);
+__be32 nfsd_read(struct svc_rqst *, struct svc_fh *,
+ loff_t, struct kvec *, int, unsigned long *,
+ u32 *eof);
+__be32 nfsd_write(struct svc_rqst *, struct svc_fh *, loff_t,
+ struct kvec *, int, unsigned long *,
+ int stable, __be32 *verf);
+__be32 nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp,
+ struct nfsd_file *nf, loff_t offset,
+ struct kvec *vec, int vlen, unsigned long *cnt,
+ int stable, __be32 *verf);
+__be32 nfsd_readlink(struct svc_rqst *, struct svc_fh *,
+ char *, int *);
+__be32 nfsd_symlink(struct svc_rqst *, struct svc_fh *,
+ char *name, int len, char *path,
+ struct nfsd_attrs *attrs,
+ struct svc_fh *res);
+__be32 nfsd_link(struct svc_rqst *, struct svc_fh *,
+ char *, int, struct svc_fh *);
+ssize_t nfsd_copy_file_range(struct file *, u64,
+ struct file *, u64, u64);
+__be32 nfsd_rename(struct svc_rqst *,
+ struct svc_fh *, char *, int,
+ struct svc_fh *, char *, int);
+__be32 nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type,
+ char *name, int len);
+__be32 nfsd_readdir(struct svc_rqst *, struct svc_fh *,
+ loff_t *, struct readdir_cd *, nfsd_filldir_t);
+__be32 nfsd_statfs(struct svc_rqst *, struct svc_fh *,
+ struct kstatfs *, int access);
+
+__be32 nfsd_permission(struct svc_rqst *, struct svc_export *,
+ struct dentry *, int);
+
+static inline int fh_want_write(struct svc_fh *fh)
+{
+ int ret;
+
+ if (fh->fh_want_write)
+ return 0;
+ ret = mnt_want_write(fh->fh_export->ex_path.mnt);
+ if (!ret)
+ fh->fh_want_write = true;
+ return ret;
+}
+
+static inline void fh_drop_write(struct svc_fh *fh)
+{
+ if (fh->fh_want_write) {
+ fh->fh_want_write = false;
+ mnt_drop_write(fh->fh_export->ex_path.mnt);
+ }
+}
+
+static inline __be32 fh_getattr(const struct svc_fh *fh, struct kstat *stat)
+{
+ struct path p = {.mnt = fh->fh_export->ex_path.mnt,
+ .dentry = fh->fh_dentry};
+ return nfserrno(vfs_getattr(&p, stat, STATX_BASIC_STATS,
+ AT_STATX_SYNC_AS_STAT));
+}
+
+#endif /* LINUX_NFSD_VFS_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-19 04:40:15 +0000