Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 183 insertions, 0 deletions

diff --git a/fs/nfsd/vfs.h b/fs/nfsd/vfs.h
new file mode 100644
index 0000000000..e3c29596f4
--- /dev/null
+++ b/fs/nfsd/vfs.h
@@ -0,0 +1,183 @@
+/* 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);
+}
+
+__be32		nfserrno (int errno);
+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 **);
+int		nfsd_open_verified(struct svc_rqst *rqstp, struct svc_fh *fhp,
+				   int may_flags, struct file **filp);
+__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_iter_read(struct svc_rqst *rqstp, struct svc_fh *fhp,
+				struct file *file, loff_t offset,
+				unsigned long *count, unsigned int base,
+				u32 *eof);
+__be32		nfsd_read(struct svc_rqst *rqstp, struct svc_fh *fhp,
+				loff_t offset, unsigned long *count,
+				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)
+{
+	u32 request_mask = STATX_BASIC_STATS;
+	struct path p = {.mnt = fh->fh_export->ex_path.mnt,
+			 .dentry = fh->fh_dentry};
+
+	if (fh->fh_maxsize == NFS4_FHSIZE)
+		request_mask |= (STATX_BTIME | STATX_CHANGE_COOKIE);
+
+	return nfserrno(vfs_getattr(&p, stat, request_mask,
+				    AT_STATX_SYNC_AS_STAT));
+}
+
+#endif /* LINUX_NFSD_VFS_H */