[mirror_ubuntu-zesty-kernel.git] / fs / nfsd / vfs.h

/*
 * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
 */

#ifndef LINUX_NFSD_VFS_H
#define LINUX_NFSD_VFS_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)

/*
 * Callback function for readdir
 */
typedef int (*nfsd_dirop_t)(struct inode *, struct dentry *, int, int);

/* nfsd/vfs.c */
int		nfsd_racache_init(int);
void		nfsd_racache_shutdown(void);
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 iattr *, int, time_t);
int nfsd_mountpoint(struct dentry *, struct svc_export *);
#ifdef CONFIG_NFSD_V4
__be32          nfsd4_set_nfs4_acl(struct svc_rqst *, struct svc_fh *,
                    struct nfs4_acl *);
int             nfsd4_get_nfs4_acl(struct svc_rqst *, struct dentry *, struct nfs4_acl **);
__be32          nfsd4_set_nfs4_label(struct svc_rqst *, struct svc_fh *,
		    struct xdr_netobj *);
#endif /* CONFIG_NFSD_V4 */
__be32		nfsd_create(struct svc_rqst *, struct svc_fh *,
				char *name, int len, struct iattr *attrs,
				int type, dev_t rdev, struct svc_fh *res);
#ifdef CONFIG_NFSD_V3
__be32		nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *);
__be32		do_nfsd_create(struct svc_rqst *, struct svc_fh *,
				char *name, int len, struct iattr *attrs,
				struct svc_fh *res, int createmode,
				u32 *verifier, bool *truncp, bool *created);
__be32		nfsd_commit(struct svc_rqst *, struct svc_fh *,
				loff_t, unsigned long);
#endif /* CONFIG_NFSD_V3 */
__be32		nfsd_open(struct svc_rqst *, struct svc_fh *, umode_t,
				int, struct file **);
void		nfsd_close(struct file *);
__be32 		nfsd_read(struct svc_rqst *, struct svc_fh *,
				loff_t, struct kvec *, int, unsigned long *);
__be32 		nfsd_read_file(struct svc_rqst *, struct svc_fh *, struct file *,
				loff_t, struct kvec *, int, unsigned long *);
__be32 		nfsd_write(struct svc_rqst *, struct svc_fh *,struct file *,
				loff_t, struct kvec *,int, unsigned long *, int *);
__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, int plen,
				struct svc_fh *res, struct iattr *);
__be32		nfsd_link(struct svc_rqst *, struct svc_fh *,
				char *, int, struct svc_fh *);
__be32		nfsd_rename(struct svc_rqst *,
				struct svc_fh *, char *, int,
				struct svc_fh *, char *, int);
__be32		nfsd_remove(struct svc_rqst *,
				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 *, 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);

#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)
struct posix_acl *nfsd_get_posix_acl(struct svc_fh *, int);
int nfsd_set_posix_acl(struct svc_fh *, int, struct posix_acl *);
#endif

static inline int fh_want_write(struct svc_fh *fh)
{
	int ret = mnt_want_write(fh->fh_export->ex_path.mnt);

	if (!ret)
		fh->fh_want_write = 1;
	return ret;
}

static inline void fh_drop_write(struct svc_fh *fh)
{
	if (fh->fh_want_write) {
		fh->fh_want_write = 0;
		mnt_drop_write(fh->fh_export->ex_path.mnt);
	}
}

static inline __be32 fh_getattr(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));
}

#endif /* LINUX_NFSD_VFS_H */
Commit	Line	Data
0a3adade BF	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
1557aca7	8	#include "nfsfh.h"
3dadecce	9	#include "nfsd.h"
1557aca7	10
0a3adade BF	11	/*
	12	* Flags for nfsd_permission
	13	*/
8e82fa8f BF	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
aea93397 BF	22
aea93397 BF	23	/* extra hints to permission and open routines: */
8e82fa8f BF	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
0a3adade	30
06effdbb BS	31	#define NFSD_MAY_64BIT_COOKIE 0x1000 /* 64 bit readdir cookies for >= NFSv3 */
06effdbb BS	32
0a3adade BF	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 */
0a3adade BF	42	int nfsd_racache_init(int);
	43	void nfsd_racache_shutdown(void);
	44	int nfsd_cross_mnt(struct svc_rqst rqstp, struct dentry *dpp,
	45	struct svc_export **expp);
	46	__be32 nfsd_lookup(struct svc_rqst , struct svc_fh ,
	47	const char , unsigned int, struct svc_fh );
	48	__be32 nfsd_lookup_dentry(struct svc_rqst , struct svc_fh ,
	49	const char *, unsigned int,
	50	struct svc_export , struct dentry );
	51	__be32 nfsd_setattr(struct svc_rqst , struct svc_fh ,
	52	struct iattr *, int, time_t);
3227fa41	53	int nfsd_mountpoint(struct dentry , struct svc_export );
0a3adade BF	54	#ifdef CONFIG_NFSD_V4
	55	__be32 nfsd4_set_nfs4_acl(struct svc_rqst , struct svc_fh ,
	56	struct nfs4_acl *);
	57	int nfsd4_get_nfs4_acl(struct svc_rqst , struct dentry , struct nfs4_acl **);
18032ca0 DQ	58	__be32 nfsd4_set_nfs4_label(struct svc_rqst , struct svc_fh ,
18032ca0 DQ	59	struct xdr_netobj *);
0a3adade BF	60	#endif /* CONFIG_NFSD_V4 */
	61	__be32 nfsd_create(struct svc_rqst , struct svc_fh ,
	62	char name, int len, struct iattr attrs,
	63	int type, dev_t rdev, struct svc_fh *res);
	64	#ifdef CONFIG_NFSD_V3
	65	__be32 nfsd_access(struct svc_rqst , struct svc_fh , u32 , u32 );
ac6721a1	66	__be32 do_nfsd_create(struct svc_rqst , struct svc_fh ,
0a3adade BF	67	char name, int len, struct iattr attrs,
0a3adade BF	68	struct svc_fh *res, int createmode,
856121b2	69	u32 verifier, bool truncp, bool *created);
0a3adade BF	70	__be32 nfsd_commit(struct svc_rqst , struct svc_fh ,
	71	loff_t, unsigned long);
	72	#endif /* CONFIG_NFSD_V3 */
175a4eb7	73	__be32 nfsd_open(struct svc_rqst , struct svc_fh , umode_t,
0a3adade BF	74	int, struct file **);
0a3adade BF	75	void nfsd_close(struct file *);
039a87ca BF	76	__be32 nfsd_read(struct svc_rqst , struct svc_fh ,
	77	loff_t, struct kvec , int, unsigned long );
	78	__be32 nfsd_read_file(struct svc_rqst , struct svc_fh , struct file *,
0a3adade BF	79	loff_t, struct kvec , int, unsigned long );
	80	__be32 nfsd_write(struct svc_rqst , struct svc_fh ,struct file *,
	81	loff_t, struct kvec ,int, unsigned long , int *);
	82	__be32 nfsd_readlink(struct svc_rqst , struct svc_fh ,
	83	char , int );
	84	__be32 nfsd_symlink(struct svc_rqst , struct svc_fh ,
	85	char name, int len, char path, int plen,
	86	struct svc_fh res, struct iattr );
	87	__be32 nfsd_link(struct svc_rqst , struct svc_fh ,
	88	char , int, struct svc_fh );
	89	__be32 nfsd_rename(struct svc_rqst *,
	90	struct svc_fh , char , int,
	91	struct svc_fh , char , int);
	92	__be32 nfsd_remove(struct svc_rqst *,
	93	struct svc_fh , char , int);
	94	__be32 nfsd_unlink(struct svc_rqst , struct svc_fh , int type,
	95	char *name, int len);
0a3adade BF	96	__be32 nfsd_readdir(struct svc_rqst , struct svc_fh ,
	97	loff_t , struct readdir_cd , filldir_t);
	98	__be32 nfsd_statfs(struct svc_rqst , struct svc_fh ,
	99	struct kstatfs *, int access);
	100
0a3adade BF	101	__be32 nfsd_permission(struct svc_rqst , struct svc_export ,
0a3adade BF	102	struct dentry *, int);
0a3adade BF	103
	104	#if defined(CONFIG_NFSD_V2_ACL) \|\| defined(CONFIG_NFSD_V3_ACL)
	105	struct posix_acl nfsd_get_posix_acl(struct svc_fh , int);
	106	int nfsd_set_posix_acl(struct svc_fh , int, struct posix_acl );
	107	#endif
	108
bad0dcff AV	109	static inline int fh_want_write(struct svc_fh *fh)
bad0dcff AV	110	{
4a55c101 JK	111	int ret = mnt_want_write(fh->fh_export->ex_path.mnt);
	112
	113	if (!ret)
	114	fh->fh_want_write = 1;
	115	return ret;
bad0dcff AV	116	}
	117
	118	static inline void fh_drop_write(struct svc_fh *fh)
	119	{
4a55c101 JK	120	if (fh->fh_want_write) {
	121	fh->fh_want_write = 0;
	122	mnt_drop_write(fh->fh_export->ex_path.mnt);
	123	}
bad0dcff AV	124	}
bad0dcff AV	125
3dadecce AV	126	static inline __be32 fh_getattr(struct svc_fh fh, struct kstat stat)
	127	{
	128	struct path p = {.mnt = fh->fh_export->ex_path.mnt,
	129	.dentry = fh->fh_dentry};
	130	return nfserrno(vfs_getattr(&p, stat));
	131	}
	132
0a3adade	133	#endif /* LINUX_NFSD_VFS_H */