linux-hardened/include/linux/nfs_xdr.h
Trond Myklebust 1f1ea6c2d9 NFSv4: Fix buffer overflow checking in __nfs4_get_acl_uncached
Pass the checks made by decode_getacl back to __nfs4_get_acl_uncached
so that it knows if the acl has been truncated.

The current overflow checking is broken, resulting in Oopses on
user-triggered nfs4_getfacl calls, and is opaque to the point
where several attempts at fixing it have failed.
This patch tries to clean up the code in addition to fixing the
Oopses by ensuring that the overflow checks are performed in
a single place (decode_getacl). If the overflow check failed,
we will still be able to report the acl length, but at least
we will no longer attempt to cache the acl or copy the
truncated contents to user space.

Reported-by: Sachin Prabhu <sprabhu@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Tested-by: Sachin Prabhu <sprabhu@redhat.com>
2012-09-06 11:11:53 -04:00

1468 lines
34 KiB
C

#ifndef _LINUX_NFS_XDR_H
#define _LINUX_NFS_XDR_H
#include <linux/nfsacl.h>
#include <linux/sunrpc/gss_api.h>
/*
* To change the maximum rsize and wsize supported by the NFS client, adjust
* NFS_MAX_FILE_IO_SIZE. 64KB is a typical maximum, but some servers can
* support a megabyte or more. The default is left at 4096 bytes, which is
* reasonable for NFS over UDP.
*/
#define NFS_MAX_FILE_IO_SIZE (1048576U)
#define NFS_DEF_FILE_IO_SIZE (4096U)
#define NFS_MIN_FILE_IO_SIZE (1024U)
/* Forward declaration for NFS v3 */
struct nfs4_secinfo_flavors;
struct nfs4_string {
unsigned int len;
char *data;
};
struct nfs_fsid {
uint64_t major;
uint64_t minor;
};
/*
* Helper for checking equality between 2 fsids.
*/
static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
{
return a->major == b->major && a->minor == b->minor;
}
struct nfs4_threshold {
__u32 bm;
__u32 l_type;
__u64 rd_sz;
__u64 wr_sz;
__u64 rd_io_sz;
__u64 wr_io_sz;
};
struct nfs_fattr {
unsigned int valid; /* which fields are valid */
umode_t mode;
__u32 nlink;
__u32 uid;
__u32 gid;
dev_t rdev;
__u64 size;
union {
struct {
__u32 blocksize;
__u32 blocks;
} nfs2;
struct {
__u64 used;
} nfs3;
} du;
struct nfs_fsid fsid;
__u64 fileid;
__u64 mounted_on_fileid;
struct timespec atime;
struct timespec mtime;
struct timespec ctime;
__u64 change_attr; /* NFSv4 change attribute */
__u64 pre_change_attr;/* pre-op NFSv4 change attribute */
__u64 pre_size; /* pre_op_attr.size */
struct timespec pre_mtime; /* pre_op_attr.mtime */
struct timespec pre_ctime; /* pre_op_attr.ctime */
unsigned long time_start;
unsigned long gencount;
struct nfs4_string *owner_name;
struct nfs4_string *group_name;
struct nfs4_threshold *mdsthreshold; /* pNFS threshold hints */
};
#define NFS_ATTR_FATTR_TYPE (1U << 0)
#define NFS_ATTR_FATTR_MODE (1U << 1)
#define NFS_ATTR_FATTR_NLINK (1U << 2)
#define NFS_ATTR_FATTR_OWNER (1U << 3)
#define NFS_ATTR_FATTR_GROUP (1U << 4)
#define NFS_ATTR_FATTR_RDEV (1U << 5)
#define NFS_ATTR_FATTR_SIZE (1U << 6)
#define NFS_ATTR_FATTR_PRESIZE (1U << 7)
#define NFS_ATTR_FATTR_BLOCKS_USED (1U << 8)
#define NFS_ATTR_FATTR_SPACE_USED (1U << 9)
#define NFS_ATTR_FATTR_FSID (1U << 10)
#define NFS_ATTR_FATTR_FILEID (1U << 11)
#define NFS_ATTR_FATTR_ATIME (1U << 12)
#define NFS_ATTR_FATTR_MTIME (1U << 13)
#define NFS_ATTR_FATTR_CTIME (1U << 14)
#define NFS_ATTR_FATTR_PREMTIME (1U << 15)
#define NFS_ATTR_FATTR_PRECTIME (1U << 16)
#define NFS_ATTR_FATTR_CHANGE (1U << 17)
#define NFS_ATTR_FATTR_PRECHANGE (1U << 18)
#define NFS_ATTR_FATTR_V4_LOCATIONS (1U << 19)
#define NFS_ATTR_FATTR_V4_REFERRAL (1U << 20)
#define NFS_ATTR_FATTR_MOUNTPOINT (1U << 21)
#define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 22)
#define NFS_ATTR_FATTR_OWNER_NAME (1U << 23)
#define NFS_ATTR_FATTR_GROUP_NAME (1U << 24)
#define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
| NFS_ATTR_FATTR_MODE \
| NFS_ATTR_FATTR_NLINK \
| NFS_ATTR_FATTR_OWNER \
| NFS_ATTR_FATTR_GROUP \
| NFS_ATTR_FATTR_RDEV \
| NFS_ATTR_FATTR_SIZE \
| NFS_ATTR_FATTR_FSID \
| NFS_ATTR_FATTR_FILEID \
| NFS_ATTR_FATTR_ATIME \
| NFS_ATTR_FATTR_MTIME \
| NFS_ATTR_FATTR_CTIME \
| NFS_ATTR_FATTR_CHANGE)
#define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
| NFS_ATTR_FATTR_BLOCKS_USED)
#define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
| NFS_ATTR_FATTR_SPACE_USED)
#define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
| NFS_ATTR_FATTR_SPACE_USED)
/*
* Info on the file system
*/
struct nfs_fsinfo {
struct nfs_fattr *fattr; /* Post-op attributes */
__u32 rtmax; /* max. read transfer size */
__u32 rtpref; /* pref. read transfer size */
__u32 rtmult; /* reads should be multiple of this */
__u32 wtmax; /* max. write transfer size */
__u32 wtpref; /* pref. write transfer size */
__u32 wtmult; /* writes should be multiple of this */
__u32 dtpref; /* pref. readdir transfer size */
__u64 maxfilesize;
struct timespec time_delta; /* server time granularity */
__u32 lease_time; /* in seconds */
__u32 layouttype; /* supported pnfs layout driver */
__u32 blksize; /* preferred pnfs io block size */
};
struct nfs_fsstat {
struct nfs_fattr *fattr; /* Post-op attributes */
__u64 tbytes; /* total size in bytes */
__u64 fbytes; /* # of free bytes */
__u64 abytes; /* # of bytes available to user */
__u64 tfiles; /* # of files */
__u64 ffiles; /* # of free files */
__u64 afiles; /* # of files available to user */
};
struct nfs2_fsstat {
__u32 tsize; /* Server transfer size */
__u32 bsize; /* Filesystem block size */
__u32 blocks; /* No. of "bsize" blocks on filesystem */
__u32 bfree; /* No. of free "bsize" blocks */
__u32 bavail; /* No. of available "bsize" blocks */
};
struct nfs_pathconf {
struct nfs_fattr *fattr; /* Post-op attributes */
__u32 max_link; /* max # of hard links */
__u32 max_namelen; /* max name length */
};
struct nfs4_change_info {
u32 atomic;
u64 before;
u64 after;
};
struct nfs_seqid;
/* nfs41 sessions channel attributes */
struct nfs4_channel_attrs {
u32 max_rqst_sz;
u32 max_resp_sz;
u32 max_resp_sz_cached;
u32 max_ops;
u32 max_reqs;
};
/* nfs41 sessions slot seqid */
struct nfs4_slot {
u32 seq_nr;
};
struct nfs4_sequence_args {
struct nfs4_session *sa_session;
u32 sa_slotid;
u8 sa_cache_this;
};
struct nfs4_sequence_res {
struct nfs4_session *sr_session;
struct nfs4_slot *sr_slot; /* slot used to send request */
int sr_status; /* sequence operation status */
unsigned long sr_renewal_time;
u32 sr_status_flags;
};
struct nfs4_get_lease_time_args {
struct nfs4_sequence_args la_seq_args;
};
struct nfs4_get_lease_time_res {
struct nfs_fsinfo *lr_fsinfo;
struct nfs4_sequence_res lr_seq_res;
};
#define PNFS_LAYOUT_MAXSIZE 4096
struct nfs4_layoutdriver_data {
struct page **pages;
__u32 pglen;
__u32 len;
};
struct pnfs_layout_range {
u32 iomode;
u64 offset;
u64 length;
};
struct nfs4_layoutget_args {
__u32 type;
struct pnfs_layout_range range;
__u64 minlength;
__u32 maxcount;
struct inode *inode;
struct nfs_open_context *ctx;
struct nfs4_sequence_args seq_args;
nfs4_stateid stateid;
struct nfs4_layoutdriver_data layout;
};
struct nfs4_layoutget_res {
__u32 return_on_close;
struct pnfs_layout_range range;
__u32 type;
nfs4_stateid stateid;
struct nfs4_sequence_res seq_res;
struct nfs4_layoutdriver_data *layoutp;
};
struct nfs4_layoutget {
struct nfs4_layoutget_args args;
struct nfs4_layoutget_res res;
struct pnfs_layout_segment **lsegpp;
gfp_t gfp_flags;
};
struct nfs4_getdevicelist_args {
const struct nfs_fh *fh;
u32 layoutclass;
struct nfs4_sequence_args seq_args;
};
struct nfs4_getdevicelist_res {
struct pnfs_devicelist *devlist;
struct nfs4_sequence_res seq_res;
};
struct nfs4_getdeviceinfo_args {
struct pnfs_device *pdev;
struct nfs4_sequence_args seq_args;
};
struct nfs4_getdeviceinfo_res {
struct pnfs_device *pdev;
struct nfs4_sequence_res seq_res;
};
struct nfs4_layoutcommit_args {
nfs4_stateid stateid;
__u64 lastbytewritten;
struct inode *inode;
const u32 *bitmask;
struct nfs4_sequence_args seq_args;
};
struct nfs4_layoutcommit_res {
struct nfs_fattr *fattr;
const struct nfs_server *server;
struct nfs4_sequence_res seq_res;
int status;
};
struct nfs4_layoutcommit_data {
struct rpc_task task;
struct nfs_fattr fattr;
struct list_head lseg_list;
struct rpc_cred *cred;
struct nfs4_layoutcommit_args args;
struct nfs4_layoutcommit_res res;
};
struct nfs4_layoutreturn_args {
struct pnfs_layout_hdr *layout;
struct inode *inode;
nfs4_stateid stateid;
__u32 layout_type;
struct nfs4_sequence_args seq_args;
};
struct nfs4_layoutreturn_res {
struct nfs4_sequence_res seq_res;
u32 lrs_present;
nfs4_stateid stateid;
};
struct nfs4_layoutreturn {
struct nfs4_layoutreturn_args args;
struct nfs4_layoutreturn_res res;
struct rpc_cred *cred;
struct nfs_client *clp;
int rpc_status;
};
struct stateowner_id {
__u64 create_time;
__u32 uniquifier;
};
/*
* Arguments to the open call.
*/
struct nfs_openargs {
const struct nfs_fh * fh;
struct nfs_seqid * seqid;
int open_flags;
fmode_t fmode;
__u64 clientid;
struct stateowner_id id;
union {
struct {
struct iattr * attrs; /* UNCHECKED, GUARDED */
nfs4_verifier verifier; /* EXCLUSIVE */
};
nfs4_stateid delegation; /* CLAIM_DELEGATE_CUR */
fmode_t delegation_type; /* CLAIM_PREVIOUS */
} u;
const struct qstr * name;
const struct nfs_server *server; /* Needed for ID mapping */
const u32 * bitmask;
const u32 * open_bitmap;
__u32 claim;
struct nfs4_sequence_args seq_args;
};
struct nfs_openres {
nfs4_stateid stateid;
struct nfs_fh fh;
struct nfs4_change_info cinfo;
__u32 rflags;
struct nfs_fattr * f_attr;
struct nfs_seqid * seqid;
const struct nfs_server *server;
fmode_t delegation_type;
nfs4_stateid delegation;
__u32 do_recall;
__u64 maxsize;
__u32 attrset[NFS4_BITMAP_SIZE];
struct nfs4_string *owner;
struct nfs4_string *group_owner;
struct nfs4_sequence_res seq_res;
};
/*
* Arguments to the open_confirm call.
*/
struct nfs_open_confirmargs {
const struct nfs_fh * fh;
nfs4_stateid * stateid;
struct nfs_seqid * seqid;
};
struct nfs_open_confirmres {
nfs4_stateid stateid;
struct nfs_seqid * seqid;
};
/*
* Arguments to the close call.
*/
struct nfs_closeargs {
struct nfs_fh * fh;
nfs4_stateid * stateid;
struct nfs_seqid * seqid;
fmode_t fmode;
const u32 * bitmask;
struct nfs4_sequence_args seq_args;
};
struct nfs_closeres {
nfs4_stateid stateid;
struct nfs_fattr * fattr;
struct nfs_seqid * seqid;
const struct nfs_server *server;
struct nfs4_sequence_res seq_res;
};
/*
* * Arguments to the lock,lockt, and locku call.
* */
struct nfs_lowner {
__u64 clientid;
__u64 id;
dev_t s_dev;
};
struct nfs_lock_args {
struct nfs_fh * fh;
struct file_lock * fl;
struct nfs_seqid * lock_seqid;
nfs4_stateid * lock_stateid;
struct nfs_seqid * open_seqid;
nfs4_stateid * open_stateid;
struct nfs_lowner lock_owner;
unsigned char block : 1;
unsigned char reclaim : 1;
unsigned char new_lock_owner : 1;
struct nfs4_sequence_args seq_args;
};
struct nfs_lock_res {
nfs4_stateid stateid;
struct nfs_seqid * lock_seqid;
struct nfs_seqid * open_seqid;
struct nfs4_sequence_res seq_res;
};
struct nfs_locku_args {
struct nfs_fh * fh;
struct file_lock * fl;
struct nfs_seqid * seqid;
nfs4_stateid * stateid;
struct nfs4_sequence_args seq_args;
};
struct nfs_locku_res {
nfs4_stateid stateid;
struct nfs_seqid * seqid;
struct nfs4_sequence_res seq_res;
};
struct nfs_lockt_args {
struct nfs_fh * fh;
struct file_lock * fl;
struct nfs_lowner lock_owner;
struct nfs4_sequence_args seq_args;
};
struct nfs_lockt_res {
struct file_lock * denied; /* LOCK, LOCKT failed */
struct nfs4_sequence_res seq_res;
};
struct nfs_release_lockowner_args {
struct nfs_lowner lock_owner;
};
struct nfs4_delegreturnargs {
const struct nfs_fh *fhandle;
const nfs4_stateid *stateid;
const u32 * bitmask;
struct nfs4_sequence_args seq_args;
};
struct nfs4_delegreturnres {
struct nfs_fattr * fattr;
const struct nfs_server *server;
struct nfs4_sequence_res seq_res;
};
/*
* Arguments to the read call.
*/
struct nfs_readargs {
struct nfs_fh * fh;
struct nfs_open_context *context;
struct nfs_lock_context *lock_context;
__u64 offset;
__u32 count;
unsigned int pgbase;
struct page ** pages;
struct nfs4_sequence_args seq_args;
};
struct nfs_readres {
struct nfs_fattr * fattr;
__u32 count;
int eof;
struct nfs4_sequence_res seq_res;
};
/*
* Arguments to the write call.
*/
struct nfs_writeargs {
struct nfs_fh * fh;
struct nfs_open_context *context;
struct nfs_lock_context *lock_context;
__u64 offset;
__u32 count;
enum nfs3_stable_how stable;
unsigned int pgbase;
struct page ** pages;
const u32 * bitmask;
struct nfs4_sequence_args seq_args;
};
struct nfs_write_verifier {
char data[8];
};
struct nfs_writeverf {
struct nfs_write_verifier verifier;
enum nfs3_stable_how committed;
};
struct nfs_writeres {
struct nfs_fattr * fattr;
struct nfs_writeverf * verf;
__u32 count;
const struct nfs_server *server;
struct nfs4_sequence_res seq_res;
};
/*
* Arguments to the commit call.
*/
struct nfs_commitargs {
struct nfs_fh *fh;
__u64 offset;
__u32 count;
const u32 *bitmask;
struct nfs4_sequence_args seq_args;
};
struct nfs_commitres {
struct nfs_fattr *fattr;
struct nfs_writeverf *verf;
const struct nfs_server *server;
struct nfs4_sequence_res seq_res;
};
/*
* Common arguments to the unlink call
*/
struct nfs_removeargs {
const struct nfs_fh *fh;
struct qstr name;
struct nfs4_sequence_args seq_args;
};
struct nfs_removeres {
const struct nfs_server *server;
struct nfs_fattr *dir_attr;
struct nfs4_change_info cinfo;
struct nfs4_sequence_res seq_res;
};
/*
* Common arguments to the rename call
*/
struct nfs_renameargs {
const struct nfs_fh *old_dir;
const struct nfs_fh *new_dir;
const struct qstr *old_name;
const struct qstr *new_name;
struct nfs4_sequence_args seq_args;
};
struct nfs_renameres {
const struct nfs_server *server;
struct nfs4_change_info old_cinfo;
struct nfs_fattr *old_fattr;
struct nfs4_change_info new_cinfo;
struct nfs_fattr *new_fattr;
struct nfs4_sequence_res seq_res;
};
/*
* Argument struct for decode_entry function
*/
struct nfs_entry {
__u64 ino;
__u64 cookie,
prev_cookie;
const char * name;
unsigned int len;
int eof;
struct nfs_fh * fh;
struct nfs_fattr * fattr;
unsigned char d_type;
struct nfs_server * server;
};
/*
* The following types are for NFSv2 only.
*/
struct nfs_sattrargs {
struct nfs_fh * fh;
struct iattr * sattr;
};
struct nfs_diropargs {
struct nfs_fh * fh;
const char * name;
unsigned int len;
};
struct nfs_createargs {
struct nfs_fh * fh;
const char * name;
unsigned int len;
struct iattr * sattr;
};
struct nfs_setattrargs {
struct nfs_fh * fh;
nfs4_stateid stateid;
struct iattr * iap;
const struct nfs_server * server; /* Needed for name mapping */
const u32 * bitmask;
struct nfs4_sequence_args seq_args;
};
struct nfs_setaclargs {
struct nfs_fh * fh;
size_t acl_len;
unsigned int acl_pgbase;
struct page ** acl_pages;
struct nfs4_sequence_args seq_args;
};
struct nfs_setaclres {
struct nfs4_sequence_res seq_res;
};
struct nfs_getaclargs {
struct nfs_fh * fh;
size_t acl_len;
unsigned int acl_pgbase;
struct page ** acl_pages;
struct nfs4_sequence_args seq_args;
};
/* getxattr ACL interface flags */
#define NFS4_ACL_TRUNC 0x0001 /* ACL was truncated */
struct nfs_getaclres {
size_t acl_len;
size_t acl_data_offset;
int acl_flags;
struct page * acl_scratch;
struct nfs4_sequence_res seq_res;
};
struct nfs_setattrres {
struct nfs_fattr * fattr;
const struct nfs_server * server;
struct nfs4_sequence_res seq_res;
};
struct nfs_linkargs {
struct nfs_fh * fromfh;
struct nfs_fh * tofh;
const char * toname;
unsigned int tolen;
};
struct nfs_symlinkargs {
struct nfs_fh * fromfh;
const char * fromname;
unsigned int fromlen;
struct page ** pages;
unsigned int pathlen;
struct iattr * sattr;
};
struct nfs_readdirargs {
struct nfs_fh * fh;
__u32 cookie;
unsigned int count;
struct page ** pages;
};
struct nfs3_getaclargs {
struct nfs_fh * fh;
int mask;
struct page ** pages;
};
struct nfs3_setaclargs {
struct inode * inode;
int mask;
struct posix_acl * acl_access;
struct posix_acl * acl_default;
size_t len;
unsigned int npages;
struct page ** pages;
};
struct nfs_diropok {
struct nfs_fh * fh;
struct nfs_fattr * fattr;
};
struct nfs_readlinkargs {
struct nfs_fh * fh;
unsigned int pgbase;
unsigned int pglen;
struct page ** pages;
};
struct nfs3_sattrargs {
struct nfs_fh * fh;
struct iattr * sattr;
unsigned int guard;
struct timespec guardtime;
};
struct nfs3_diropargs {
struct nfs_fh * fh;
const char * name;
unsigned int len;
};
struct nfs3_accessargs {
struct nfs_fh * fh;
__u32 access;
};
struct nfs3_createargs {
struct nfs_fh * fh;
const char * name;
unsigned int len;
struct iattr * sattr;
enum nfs3_createmode createmode;
__be32 verifier[2];
};
struct nfs3_mkdirargs {
struct nfs_fh * fh;
const char * name;
unsigned int len;
struct iattr * sattr;
};
struct nfs3_symlinkargs {
struct nfs_fh * fromfh;
const char * fromname;
unsigned int fromlen;
struct page ** pages;
unsigned int pathlen;
struct iattr * sattr;
};
struct nfs3_mknodargs {
struct nfs_fh * fh;
const char * name;
unsigned int len;
enum nfs3_ftype type;
struct iattr * sattr;
dev_t rdev;
};
struct nfs3_linkargs {
struct nfs_fh * fromfh;
struct nfs_fh * tofh;
const char * toname;
unsigned int tolen;
};
struct nfs3_readdirargs {
struct nfs_fh * fh;
__u64 cookie;
__be32 verf[2];
int plus;
unsigned int count;
struct page ** pages;
};
struct nfs3_diropres {
struct nfs_fattr * dir_attr;
struct nfs_fh * fh;
struct nfs_fattr * fattr;
};
struct nfs3_accessres {
struct nfs_fattr * fattr;
__u32 access;
};
struct nfs3_readlinkargs {
struct nfs_fh * fh;
unsigned int pgbase;
unsigned int pglen;
struct page ** pages;
};
struct nfs3_linkres {
struct nfs_fattr * dir_attr;
struct nfs_fattr * fattr;
};
struct nfs3_readdirres {
struct nfs_fattr * dir_attr;
__be32 * verf;
int plus;
};
struct nfs3_getaclres {
struct nfs_fattr * fattr;
int mask;
unsigned int acl_access_count;
unsigned int acl_default_count;
struct posix_acl * acl_access;
struct posix_acl * acl_default;
};
#if IS_ENABLED(CONFIG_NFS_V4)
typedef u64 clientid4;
struct nfs4_accessargs {
const struct nfs_fh * fh;
const u32 * bitmask;
u32 access;
struct nfs4_sequence_args seq_args;
};
struct nfs4_accessres {
const struct nfs_server * server;
struct nfs_fattr * fattr;
u32 supported;
u32 access;
struct nfs4_sequence_res seq_res;
};
struct nfs4_create_arg {
u32 ftype;
union {
struct {
struct page ** pages;
unsigned int len;
} symlink; /* NF4LNK */
struct {
u32 specdata1;
u32 specdata2;
} device; /* NF4BLK, NF4CHR */
} u;
const struct qstr * name;
const struct nfs_server * server;
const struct iattr * attrs;
const struct nfs_fh * dir_fh;
const u32 * bitmask;
struct nfs4_sequence_args seq_args;
};
struct nfs4_create_res {
const struct nfs_server * server;
struct nfs_fh * fh;
struct nfs_fattr * fattr;
struct nfs4_change_info dir_cinfo;
struct nfs4_sequence_res seq_res;
};
struct nfs4_fsinfo_arg {
const struct nfs_fh * fh;
const u32 * bitmask;
struct nfs4_sequence_args seq_args;
};
struct nfs4_fsinfo_res {
struct nfs_fsinfo *fsinfo;
struct nfs4_sequence_res seq_res;
};
struct nfs4_getattr_arg {
const struct nfs_fh * fh;
const u32 * bitmask;
struct nfs4_sequence_args seq_args;
};
struct nfs4_getattr_res {
const struct nfs_server * server;
struct nfs_fattr * fattr;
struct nfs4_sequence_res seq_res;
};
struct nfs4_link_arg {
const struct nfs_fh * fh;
const struct nfs_fh * dir_fh;
const struct qstr * name;
const u32 * bitmask;
struct nfs4_sequence_args seq_args;
};
struct nfs4_link_res {
const struct nfs_server * server;
struct nfs_fattr * fattr;
struct nfs4_change_info cinfo;
struct nfs_fattr * dir_attr;
struct nfs4_sequence_res seq_res;
};
struct nfs4_lookup_arg {
const struct nfs_fh * dir_fh;
const struct qstr * name;
const u32 * bitmask;
struct nfs4_sequence_args seq_args;
};
struct nfs4_lookup_res {
const struct nfs_server * server;
struct nfs_fattr * fattr;
struct nfs_fh * fh;
struct nfs4_sequence_res seq_res;
};
struct nfs4_lookup_root_arg {
const u32 * bitmask;
struct nfs4_sequence_args seq_args;
};
struct nfs4_pathconf_arg {
const struct nfs_fh * fh;
const u32 * bitmask;
struct nfs4_sequence_args seq_args;
};
struct nfs4_pathconf_res {
struct nfs_pathconf *pathconf;
struct nfs4_sequence_res seq_res;
};
struct nfs4_readdir_arg {
const struct nfs_fh * fh;
u64 cookie;
nfs4_verifier verifier;
u32 count;
struct page ** pages; /* zero-copy data */
unsigned int pgbase; /* zero-copy data */
const u32 * bitmask;
int plus;
struct nfs4_sequence_args seq_args;
};
struct nfs4_readdir_res {
nfs4_verifier verifier;
unsigned int pgbase;
struct nfs4_sequence_res seq_res;
};
struct nfs4_readlink {
const struct nfs_fh * fh;
unsigned int pgbase;
unsigned int pglen; /* zero-copy data */
struct page ** pages; /* zero-copy data */
struct nfs4_sequence_args seq_args;
};
struct nfs4_readlink_res {
struct nfs4_sequence_res seq_res;
};
#define NFS4_SETCLIENTID_NAMELEN (127)
struct nfs4_setclientid {
const nfs4_verifier * sc_verifier;
unsigned int sc_name_len;
char sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
u32 sc_prog;
unsigned int sc_netid_len;
char sc_netid[RPCBIND_MAXNETIDLEN + 1];
unsigned int sc_uaddr_len;
char sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
u32 sc_cb_ident;
};
struct nfs4_setclientid_res {
u64 clientid;
nfs4_verifier confirm;
};
struct nfs4_statfs_arg {
const struct nfs_fh * fh;
const u32 * bitmask;
struct nfs4_sequence_args seq_args;
};
struct nfs4_statfs_res {
struct nfs_fsstat *fsstat;
struct nfs4_sequence_res seq_res;
};
struct nfs4_server_caps_arg {
struct nfs_fh *fhandle;
struct nfs4_sequence_args seq_args;
};
struct nfs4_server_caps_res {
u32 attr_bitmask[3];
u32 acl_bitmask;
u32 has_links;
u32 has_symlinks;
u32 fh_expire_type;
struct nfs4_sequence_res seq_res;
};
#define NFS4_PATHNAME_MAXCOMPONENTS 512
struct nfs4_pathname {
unsigned int ncomponents;
struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
};
#define NFS4_FS_LOCATION_MAXSERVERS 10
struct nfs4_fs_location {
unsigned int nservers;
struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
struct nfs4_pathname rootpath;
};
#define NFS4_FS_LOCATIONS_MAXENTRIES 10
struct nfs4_fs_locations {
struct nfs_fattr fattr;
const struct nfs_server *server;
struct nfs4_pathname fs_path;
int nlocations;
struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
};
struct nfs4_fs_locations_arg {
const struct nfs_fh *dir_fh;
const struct qstr *name;
struct page *page;
const u32 *bitmask;
struct nfs4_sequence_args seq_args;
};
struct nfs4_fs_locations_res {
struct nfs4_fs_locations *fs_locations;
struct nfs4_sequence_res seq_res;
};
struct nfs4_secinfo_oid {
unsigned int len;
char data[GSS_OID_MAX_LEN];
};
struct nfs4_secinfo_gss {
struct nfs4_secinfo_oid sec_oid4;
unsigned int qop4;
unsigned int service;
};
struct nfs4_secinfo_flavor {
unsigned int flavor;
struct nfs4_secinfo_gss gss;
};
struct nfs4_secinfo_flavors {
unsigned int num_flavors;
struct nfs4_secinfo_flavor flavors[0];
};
struct nfs4_secinfo_arg {
const struct nfs_fh *dir_fh;
const struct qstr *name;
struct nfs4_sequence_args seq_args;
};
struct nfs4_secinfo_res {
struct nfs4_secinfo_flavors *flavors;
struct nfs4_sequence_res seq_res;
};
#endif /* CONFIG_NFS_V4 */
struct nfstime4 {
u64 seconds;
u32 nseconds;
};
#ifdef CONFIG_NFS_V4_1
struct pnfs_commit_bucket {
struct list_head written;
struct list_head committing;
struct pnfs_layout_segment *wlseg;
struct pnfs_layout_segment *clseg;
};
struct pnfs_ds_commit_info {
int nwritten;
int ncommitting;
int nbuckets;
struct pnfs_commit_bucket *buckets;
};
#define NFS4_EXCHANGE_ID_LEN (48)
struct nfs41_exchange_id_args {
struct nfs_client *client;
nfs4_verifier *verifier;
unsigned int id_len;
char id[NFS4_EXCHANGE_ID_LEN];
u32 flags;
};
struct nfs41_server_owner {
uint64_t minor_id;
uint32_t major_id_sz;
char major_id[NFS4_OPAQUE_LIMIT];
};
struct nfs41_server_scope {
uint32_t server_scope_sz;
char server_scope[NFS4_OPAQUE_LIMIT];
};
struct nfs41_impl_id {
char domain[NFS4_OPAQUE_LIMIT + 1];
char name[NFS4_OPAQUE_LIMIT + 1];
struct nfstime4 date;
};
struct nfs41_bind_conn_to_session_res {
struct nfs4_session *session;
u32 dir;
bool use_conn_in_rdma_mode;
};
struct nfs41_exchange_id_res {
u64 clientid;
u32 seqid;
u32 flags;
struct nfs41_server_owner *server_owner;
struct nfs41_server_scope *server_scope;
struct nfs41_impl_id *impl_id;
};
struct nfs41_create_session_args {
struct nfs_client *client;
uint32_t flags;
uint32_t cb_program;
struct nfs4_channel_attrs fc_attrs; /* Fore Channel */
struct nfs4_channel_attrs bc_attrs; /* Back Channel */
};
struct nfs41_create_session_res {
struct nfs_client *client;
};
struct nfs41_reclaim_complete_args {
/* In the future extend to include curr_fh for use with migration */
unsigned char one_fs:1;
struct nfs4_sequence_args seq_args;
};
struct nfs41_reclaim_complete_res {
struct nfs4_sequence_res seq_res;
};
#define SECINFO_STYLE_CURRENT_FH 0
#define SECINFO_STYLE_PARENT 1
struct nfs41_secinfo_no_name_args {
int style;
struct nfs4_sequence_args seq_args;
};
struct nfs41_test_stateid_args {
nfs4_stateid *stateid;
struct nfs4_sequence_args seq_args;
};
struct nfs41_test_stateid_res {
unsigned int status;
struct nfs4_sequence_res seq_res;
};
struct nfs41_free_stateid_args {
nfs4_stateid *stateid;
struct nfs4_sequence_args seq_args;
};
struct nfs41_free_stateid_res {
unsigned int status;
struct nfs4_sequence_res seq_res;
};
#else
struct pnfs_ds_commit_info {
};
#endif /* CONFIG_NFS_V4_1 */
struct nfs_page;
#define NFS_PAGEVEC_SIZE (8U)
struct nfs_page_array {
struct page **pagevec;
unsigned int npages; /* Max length of pagevec */
struct page *page_array[NFS_PAGEVEC_SIZE];
};
struct nfs_read_data {
struct nfs_pgio_header *header;
struct list_head list;
struct rpc_task task;
struct nfs_fattr fattr; /* fattr storage */
struct nfs_readargs args;
struct nfs_readres res;
unsigned long timestamp; /* For lease renewal */
int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data);
__u64 mds_offset;
struct nfs_page_array pages;
struct nfs_client *ds_clp; /* pNFS data server */
};
/* used as flag bits in nfs_pgio_header */
enum {
NFS_IOHDR_ERROR = 0,
NFS_IOHDR_EOF,
NFS_IOHDR_REDO,
NFS_IOHDR_NEED_COMMIT,
NFS_IOHDR_NEED_RESCHED,
};
struct nfs_pgio_header {
struct inode *inode;
struct rpc_cred *cred;
struct list_head pages;
struct list_head rpc_list;
atomic_t refcnt;
struct nfs_page *req;
struct nfs_writeverf *verf;
struct pnfs_layout_segment *lseg;
loff_t io_start;
const struct rpc_call_ops *mds_ops;
void (*release) (struct nfs_pgio_header *hdr);
const struct nfs_pgio_completion_ops *completion_ops;
struct nfs_direct_req *dreq;
void *layout_private;
spinlock_t lock;
/* fields protected by lock */
int pnfs_error;
int error; /* merge with pnfs_error */
unsigned long good_bytes; /* boundary of good data */
unsigned long flags;
};
struct nfs_read_header {
struct nfs_pgio_header header;
struct nfs_read_data rpc_data;
};
struct nfs_write_data {
struct nfs_pgio_header *header;
struct list_head list;
struct rpc_task task;
struct nfs_fattr fattr;
struct nfs_writeverf verf;
struct nfs_writeargs args; /* argument struct */
struct nfs_writeres res; /* result struct */
unsigned long timestamp; /* For lease renewal */
int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data);
__u64 mds_offset; /* Filelayout dense stripe */
struct nfs_page_array pages;
struct nfs_client *ds_clp; /* pNFS data server */
};
struct nfs_write_header {
struct nfs_pgio_header header;
struct nfs_write_data rpc_data;
struct nfs_writeverf verf;
};
struct nfs_mds_commit_info {
atomic_t rpcs_out;
unsigned long ncommit;
struct list_head list;
};
struct nfs_commit_data;
struct nfs_inode;
struct nfs_commit_completion_ops {
void (*error_cleanup) (struct nfs_inode *nfsi);
void (*completion) (struct nfs_commit_data *data);
};
struct nfs_commit_info {
spinlock_t *lock;
struct nfs_mds_commit_info *mds;
struct pnfs_ds_commit_info *ds;
struct nfs_direct_req *dreq; /* O_DIRECT request */
const struct nfs_commit_completion_ops *completion_ops;
};
struct nfs_commit_data {
struct rpc_task task;
struct inode *inode;
struct rpc_cred *cred;
struct nfs_fattr fattr;
struct nfs_writeverf verf;
struct list_head pages; /* Coalesced requests we wish to flush */
struct list_head list; /* lists of struct nfs_write_data */
struct nfs_direct_req *dreq; /* O_DIRECT request */
struct nfs_commitargs args; /* argument struct */
struct nfs_commitres res; /* result struct */
struct nfs_open_context *context;
struct pnfs_layout_segment *lseg;
struct nfs_client *ds_clp; /* pNFS data server */
int ds_commit_index;
const struct rpc_call_ops *mds_ops;
const struct nfs_commit_completion_ops *completion_ops;
int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
};
struct nfs_pgio_completion_ops {
void (*error_cleanup)(struct list_head *head);
void (*init_hdr)(struct nfs_pgio_header *hdr);
void (*completion)(struct nfs_pgio_header *hdr);
};
struct nfs_unlinkdata {
struct hlist_node list;
struct nfs_removeargs args;
struct nfs_removeres res;
struct inode *dir;
struct rpc_cred *cred;
struct nfs_fattr dir_attr;
};
struct nfs_renamedata {
struct nfs_renameargs args;
struct nfs_renameres res;
struct rpc_cred *cred;
struct inode *old_dir;
struct dentry *old_dentry;
struct nfs_fattr old_fattr;
struct inode *new_dir;
struct dentry *new_dentry;
struct nfs_fattr new_fattr;
};
struct nfs_access_entry;
struct nfs_client;
struct rpc_timeout;
struct nfs_subversion;
struct nfs_mount_info;
struct nfs_client_initdata;
struct nfs_pageio_descriptor;
/*
* RPC procedure vector for NFSv2/NFSv3 demuxing
*/
struct nfs_rpc_ops {
u32 version; /* Protocol version */
const struct dentry_operations *dentry_ops;
const struct inode_operations *dir_inode_ops;
const struct inode_operations *file_inode_ops;
const struct file_operations *file_ops;
int (*getroot) (struct nfs_server *, struct nfs_fh *,
struct nfs_fsinfo *);
struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
struct nfs_fh *, struct nfs_fattr *);
struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *,
struct nfs_subversion *);
int (*getattr) (struct nfs_server *, struct nfs_fh *,
struct nfs_fattr *);
int (*setattr) (struct dentry *, struct nfs_fattr *,
struct iattr *);
int (*lookup) (struct inode *, struct qstr *,
struct nfs_fh *, struct nfs_fattr *);
int (*access) (struct inode *, struct nfs_access_entry *);
int (*readlink)(struct inode *, struct page *, unsigned int,
unsigned int);
int (*create) (struct inode *, struct dentry *,
struct iattr *, int);
int (*remove) (struct inode *, struct qstr *);
void (*unlink_setup) (struct rpc_message *, struct inode *dir);
void (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
int (*unlink_done) (struct rpc_task *, struct inode *);
int (*rename) (struct inode *, struct qstr *,
struct inode *, struct qstr *);
void (*rename_setup) (struct rpc_message *msg, struct inode *dir);
void (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
int (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
int (*link) (struct inode *, struct inode *, struct qstr *);
int (*symlink) (struct inode *, struct dentry *, struct page *,
unsigned int, struct iattr *);
int (*mkdir) (struct inode *, struct dentry *, struct iattr *);
int (*rmdir) (struct inode *, struct qstr *);
int (*readdir) (struct dentry *, struct rpc_cred *,
u64, struct page **, unsigned int, int);
int (*mknod) (struct inode *, struct dentry *, struct iattr *,
dev_t);
int (*statfs) (struct nfs_server *, struct nfs_fh *,
struct nfs_fsstat *);
int (*fsinfo) (struct nfs_server *, struct nfs_fh *,
struct nfs_fsinfo *);
int (*pathconf) (struct nfs_server *, struct nfs_fh *,
struct nfs_pathconf *);
int (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
void (*read_setup) (struct nfs_read_data *, struct rpc_message *);
void (*read_pageio_init)(struct nfs_pageio_descriptor *, struct inode *,
const struct nfs_pgio_completion_ops *);
void (*read_rpc_prepare)(struct rpc_task *, struct nfs_read_data *);
int (*read_done) (struct rpc_task *, struct nfs_read_data *);
void (*write_setup) (struct nfs_write_data *, struct rpc_message *);
void (*write_pageio_init)(struct nfs_pageio_descriptor *, struct inode *, int,
const struct nfs_pgio_completion_ops *);
void (*write_rpc_prepare)(struct rpc_task *, struct nfs_write_data *);
int (*write_done) (struct rpc_task *, struct nfs_write_data *);
void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
void (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
int (*commit_done) (struct rpc_task *, struct nfs_commit_data *);
int (*lock)(struct file *, int, struct file_lock *);
int (*lock_check_bounds)(const struct file_lock *);
void (*clear_acl_cache)(struct inode *);
void (*close_context)(struct nfs_open_context *ctx, int);
struct inode * (*open_context) (struct inode *dir,
struct nfs_open_context *ctx,
int open_flags,
struct iattr *iattr);
int (*have_delegation)(struct inode *, fmode_t);
int (*return_delegation)(struct inode *);
struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
struct nfs_client *
(*init_client) (struct nfs_client *, const struct rpc_timeout *,
const char *, rpc_authflavor_t);
void (*free_client) (struct nfs_client *);
struct nfs_server *(*create_server)(struct nfs_mount_info *, struct nfs_subversion *);
struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
struct nfs_fattr *, rpc_authflavor_t);
};
/*
* NFS_CALL(getattr, inode, (fattr));
* into
* NFS_PROTO(inode)->getattr(fattr);
*/
#define NFS_CALL(op, inode, args) NFS_PROTO(inode)->op args
/*
* Function vectors etc. for the NFS client
*/
extern const struct nfs_rpc_ops nfs_v2_clientops;
extern const struct nfs_rpc_ops nfs_v3_clientops;
extern const struct nfs_rpc_ops nfs_v4_clientops;
extern const struct rpc_version nfs_version2;
extern const struct rpc_version nfs_version3;
extern const struct rpc_version nfs_version4;
extern const struct rpc_version nfsacl_version3;
extern const struct rpc_program nfsacl_program;
#endif