David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 1 | /* |
| 2 | * NFS internal definitions |
| 3 | */ |
| 4 | |
Andy Adamson | eedc020 | 2009-04-01 09:22:41 -0400 | [diff] [blame] | 5 | #include "nfs4_fs.h" |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 6 | #include <linux/mount.h> |
Eric Paris | f9c3a38 | 2008-03-05 14:20:18 -0500 | [diff] [blame] | 7 | #include <linux/security.h> |
Trond Myklebust | 1264a2f | 2013-08-12 16:06:31 -0400 | [diff] [blame] | 8 | #include <linux/crc32.h> |
Peng Tao | 47af81f | 2014-11-10 08:35:34 +0800 | [diff] [blame] | 9 | #include <linux/nfs_page.h> |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 10 | |
David Howells | 0873404 | 2009-04-03 16:42:42 +0100 | [diff] [blame] | 11 | #define NFS_MS_MASK (MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS) |
| 12 | |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 13 | struct nfs_string; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 14 | |
| 15 | /* Maximum number of readahead requests |
| 16 | * FIXME: this should really be a sysctl so that users may tune it to suit |
| 17 | * their needs. People that do NFS over a slow network, might for |
| 18 | * instance want to reduce it to something closer to 1 for improved |
| 19 | * interactive response. |
| 20 | */ |
| 21 | #define NFS_MAX_READAHEAD (RPC_DEF_SLOT_TABLE - 1) |
| 22 | |
Bryan Schumaker | 7ebb931 | 2011-03-24 17:12:30 +0000 | [diff] [blame] | 23 | static inline void nfs_attr_check_mountpoint(struct super_block *parent, struct nfs_fattr *fattr) |
| 24 | { |
| 25 | if (!nfs_fsid_equal(&NFS_SB(parent)->fsid, &fattr->fsid)) |
| 26 | fattr->valid |= NFS_ATTR_FATTR_MOUNTPOINT; |
| 27 | } |
| 28 | |
Andy Adamson | 533eb46 | 2011-06-13 18:25:56 -0400 | [diff] [blame] | 29 | static inline int nfs_attr_use_mounted_on_fileid(struct nfs_fattr *fattr) |
| 30 | { |
| 31 | if (((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) == 0) || |
| 32 | (((fattr->valid & NFS_ATTR_FATTR_MOUNTPOINT) == 0) && |
| 33 | ((fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL) == 0))) |
| 34 | return 0; |
Andy Adamson | 533eb46 | 2011-06-13 18:25:56 -0400 | [diff] [blame] | 35 | return 1; |
| 36 | } |
| 37 | |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 38 | struct nfs_clone_mount { |
| 39 | const struct super_block *sb; |
| 40 | const struct dentry *dentry; |
| 41 | struct nfs_fh *fh; |
| 42 | struct nfs_fattr *fattr; |
| 43 | char *hostname; |
| 44 | char *mnt_path; |
Chuck Lever | 6677d09 | 2007-12-10 14:59:06 -0500 | [diff] [blame] | 45 | struct sockaddr *addr; |
| 46 | size_t addrlen; |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 47 | rpc_authflavor_t authflavor; |
| 48 | }; |
| 49 | |
\"Talpey, Thomas\ | 6b18eaa | 2007-09-10 13:43:29 -0400 | [diff] [blame] | 50 | /* |
Chuck Lever | a14017d | 2009-06-17 18:02:12 -0700 | [diff] [blame] | 51 | * Note: RFC 1813 doesn't limit the number of auth flavors that |
| 52 | * a server can return, so make something up. |
| 53 | */ |
| 54 | #define NFS_MAX_SECFLAVORS (12) |
| 55 | |
| 56 | /* |
Chuck Lever | 4cfd74f | 2009-09-08 19:49:47 -0400 | [diff] [blame] | 57 | * Value used if the user did not specify a port value. |
| 58 | */ |
| 59 | #define NFS_UNSPEC_PORT (-1) |
| 60 | |
| 61 | /* |
Bryan Schumaker | 56e4ebf | 2010-10-20 15:44:37 -0400 | [diff] [blame] | 62 | * Maximum number of pages that readdir can use for creating |
| 63 | * a vmapped array of pages. |
| 64 | */ |
| 65 | #define NFS_MAX_READDIR_PAGES 8 |
| 66 | |
Bryan Schumaker | fcf1039 | 2012-07-16 16:39:18 -0400 | [diff] [blame] | 67 | struct nfs_client_initdata { |
| 68 | unsigned long init_flags; |
| 69 | const char *hostname; |
| 70 | const struct sockaddr *addr; |
| 71 | size_t addrlen; |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 72 | struct nfs_subversion *nfs_mod; |
Bryan Schumaker | fcf1039 | 2012-07-16 16:39:18 -0400 | [diff] [blame] | 73 | int proto; |
| 74 | u32 minorversion; |
| 75 | struct net *net; |
| 76 | }; |
| 77 | |
Bryan Schumaker | 56e4ebf | 2010-10-20 15:44:37 -0400 | [diff] [blame] | 78 | /* |
\"Talpey, Thomas\ | 6b18eaa | 2007-09-10 13:43:29 -0400 | [diff] [blame] | 79 | * In-kernel mount arguments |
| 80 | */ |
| 81 | struct nfs_parsed_mount_data { |
| 82 | int flags; |
Chuck Lever | 8cb7f74 | 2012-09-14 17:23:14 -0400 | [diff] [blame] | 83 | unsigned int rsize, wsize; |
| 84 | unsigned int timeo, retrans; |
| 85 | unsigned int acregmin, acregmax, |
\"Talpey, Thomas\ | 6b18eaa | 2007-09-10 13:43:29 -0400 | [diff] [blame] | 86 | acdirmin, acdirmax; |
Chuck Lever | 8cb7f74 | 2012-09-14 17:23:14 -0400 | [diff] [blame] | 87 | unsigned int namlen; |
David Howells | b797cac | 2009-04-03 16:42:48 +0100 | [diff] [blame] | 88 | unsigned int options; |
\"Talpey, Thomas\ | 6b18eaa | 2007-09-10 13:43:29 -0400 | [diff] [blame] | 89 | unsigned int bsize; |
Weston Andros Adamson | a3f73c2 | 2013-10-18 15:15:16 -0400 | [diff] [blame] | 90 | struct nfs_auth_info auth_info; |
| 91 | rpc_authflavor_t selected_flavor; |
\"Talpey, Thomas\ | 6b18eaa | 2007-09-10 13:43:29 -0400 | [diff] [blame] | 92 | char *client_address; |
Chuck Lever | 764302c | 2009-09-08 19:50:03 -0400 | [diff] [blame] | 93 | unsigned int version; |
Mike Sager | 3fd5be9 | 2009-04-01 09:21:48 -0400 | [diff] [blame] | 94 | unsigned int minorversion; |
David Howells | 0873404 | 2009-04-03 16:42:42 +0100 | [diff] [blame] | 95 | char *fscache_uniq; |
Bryan Schumaker | b72e4f4 | 2012-05-10 15:07:40 -0400 | [diff] [blame] | 96 | bool need_mount; |
\"Talpey, Thomas\ | 6b18eaa | 2007-09-10 13:43:29 -0400 | [diff] [blame] | 97 | |
| 98 | struct { |
Chuck Lever | 4c56801 | 2007-12-10 14:59:28 -0500 | [diff] [blame] | 99 | struct sockaddr_storage address; |
| 100 | size_t addrlen; |
\"Talpey, Thomas\ | 6b18eaa | 2007-09-10 13:43:29 -0400 | [diff] [blame] | 101 | char *hostname; |
Chuck Lever | 78fa701 | 2008-03-14 14:10:15 -0400 | [diff] [blame] | 102 | u32 version; |
Chuck Lever | 4cfd74f | 2009-09-08 19:49:47 -0400 | [diff] [blame] | 103 | int port; |
Chuck Lever | 78fa701 | 2008-03-14 14:10:15 -0400 | [diff] [blame] | 104 | unsigned short protocol; |
\"Talpey, Thomas\ | 6b18eaa | 2007-09-10 13:43:29 -0400 | [diff] [blame] | 105 | } mount_server; |
| 106 | |
| 107 | struct { |
Chuck Lever | 4c56801 | 2007-12-10 14:59:28 -0500 | [diff] [blame] | 108 | struct sockaddr_storage address; |
| 109 | size_t addrlen; |
\"Talpey, Thomas\ | 6b18eaa | 2007-09-10 13:43:29 -0400 | [diff] [blame] | 110 | char *hostname; |
| 111 | char *export_path; |
Chuck Lever | 4cfd74f | 2009-09-08 19:49:47 -0400 | [diff] [blame] | 112 | int port; |
Chuck Lever | 78fa701 | 2008-03-14 14:10:15 -0400 | [diff] [blame] | 113 | unsigned short protocol; |
\"Talpey, Thomas\ | 6b18eaa | 2007-09-10 13:43:29 -0400 | [diff] [blame] | 114 | } nfs_server; |
Eric Paris | f9c3a38 | 2008-03-05 14:20:18 -0500 | [diff] [blame] | 115 | |
| 116 | struct security_mnt_opts lsm_opts; |
Stanislav Kinsbursky | e50a7a1 | 2012-01-10 16:12:46 +0400 | [diff] [blame] | 117 | struct net *net; |
\"Talpey, Thomas\ | 6b18eaa | 2007-09-10 13:43:29 -0400 | [diff] [blame] | 118 | }; |
| 119 | |
Chuck Lever | 146ec94 | 2008-12-23 15:21:34 -0500 | [diff] [blame] | 120 | /* mount_clnt.c */ |
Chuck Lever | c5d120f | 2008-12-23 15:21:35 -0500 | [diff] [blame] | 121 | struct nfs_mount_request { |
| 122 | struct sockaddr *sap; |
| 123 | size_t salen; |
| 124 | char *hostname; |
| 125 | char *dirpath; |
| 126 | u32 version; |
| 127 | unsigned short protocol; |
| 128 | struct nfs_fh *fh; |
Chuck Lever | 50a737f | 2008-12-23 15:21:37 -0500 | [diff] [blame] | 129 | int noresvport; |
Chuck Lever | 8e02f6b | 2009-06-17 18:02:13 -0700 | [diff] [blame] | 130 | unsigned int *auth_flav_len; |
| 131 | rpc_authflavor_t *auth_flavs; |
Stanislav Kinsbursky | 6d59b8d | 2012-01-10 16:12:54 +0400 | [diff] [blame] | 132 | struct net *net; |
Chuck Lever | c5d120f | 2008-12-23 15:21:35 -0500 | [diff] [blame] | 133 | }; |
| 134 | |
Bryan Schumaker | fbdefd6 | 2012-07-16 16:39:20 -0400 | [diff] [blame] | 135 | struct nfs_mount_info { |
| 136 | void (*fill_super)(struct super_block *, struct nfs_mount_info *); |
| 137 | int (*set_security)(struct super_block *, struct dentry *, struct nfs_mount_info *); |
| 138 | struct nfs_parsed_mount_data *parsed; |
| 139 | struct nfs_clone_mount *cloned; |
| 140 | struct nfs_fh *mntfh; |
| 141 | }; |
| 142 | |
Chuck Lever | c5d120f | 2008-12-23 15:21:35 -0500 | [diff] [blame] | 143 | extern int nfs_mount(struct nfs_mount_request *info); |
Chuck Lever | 0b52412 | 2009-08-09 15:09:30 -0400 | [diff] [blame] | 144 | extern void nfs_umount(const struct nfs_mount_request *info); |
Chuck Lever | 146ec94 | 2008-12-23 15:21:34 -0500 | [diff] [blame] | 145 | |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 146 | /* client.c */ |
Trond Myklebust | a613fa1 | 2012-01-20 13:53:56 -0500 | [diff] [blame] | 147 | extern const struct rpc_program nfs_program; |
Stanislav Kinsbursky | 6b13168 | 2012-01-23 17:26:05 +0000 | [diff] [blame] | 148 | extern void nfs_clients_init(struct net *net); |
Bryan Schumaker | 6663ee7 | 2012-06-20 15:53:46 -0400 | [diff] [blame] | 149 | extern struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *); |
Bryan Schumaker | 428360d | 2012-07-16 16:39:17 -0400 | [diff] [blame] | 150 | int nfs_create_rpc_client(struct nfs_client *, const struct rpc_timeout *, rpc_authflavor_t); |
Bryan Schumaker | fcf1039 | 2012-07-16 16:39:18 -0400 | [diff] [blame] | 151 | struct nfs_client *nfs_get_client(const struct nfs_client_initdata *, |
| 152 | const struct rpc_timeout *, const char *, |
| 153 | rpc_authflavor_t); |
| 154 | int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *, struct nfs_fattr *); |
| 155 | void nfs_server_insert_lists(struct nfs_server *); |
Chuck Lever | 32e62b7 | 2013-10-17 14:12:28 -0400 | [diff] [blame] | 156 | void nfs_server_remove_lists(struct nfs_server *); |
Bryan Schumaker | fcf1039 | 2012-07-16 16:39:18 -0400 | [diff] [blame] | 157 | void nfs_init_timeout_values(struct rpc_timeout *, int, unsigned int, unsigned int); |
| 158 | int nfs_init_server_rpcclient(struct nfs_server *, const struct rpc_timeout *t, |
| 159 | rpc_authflavor_t); |
| 160 | struct nfs_server *nfs_alloc_server(void); |
| 161 | void nfs_server_copy_userdata(struct nfs_server *, struct nfs_server *); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 162 | |
Stanislav Kinsbursky | 28cd1b3 | 2012-01-23 17:26:22 +0000 | [diff] [blame] | 163 | extern void nfs_cleanup_cb_ident_idr(struct net *); |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 164 | extern void nfs_put_client(struct nfs_client *); |
Bryan Schumaker | cdb7ece | 2012-06-20 15:53:45 -0400 | [diff] [blame] | 165 | extern void nfs_free_client(struct nfs_client *); |
Stanislav Kinsbursky | 28cd1b3 | 2012-01-23 17:26:22 +0000 | [diff] [blame] | 166 | extern struct nfs_client *nfs4_find_client_ident(struct net *, int); |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 167 | extern struct nfs_client * |
Stanislav Kinsbursky | c7add9a | 2012-01-26 15:11:49 +0400 | [diff] [blame] | 168 | nfs4_find_client_sessionid(struct net *, const struct sockaddr *, |
Bryan Schumaker | 459de2e | 2013-06-05 11:15:01 -0400 | [diff] [blame] | 169 | struct nfs4_sessionid *, u32); |
Bryan Schumaker | 1179acc | 2012-07-30 16:05:19 -0400 | [diff] [blame] | 170 | extern struct nfs_server *nfs_create_server(struct nfs_mount_info *, |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 171 | struct nfs_subversion *); |
\"Talpey, Thomas\ | 91ea40b | 2007-09-10 13:44:33 -0400 | [diff] [blame] | 172 | extern struct nfs_server *nfs4_create_server( |
Bryan Schumaker | 1179acc | 2012-07-30 16:05:19 -0400 | [diff] [blame] | 173 | struct nfs_mount_info *, |
| 174 | struct nfs_subversion *); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 175 | extern struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *, |
| 176 | struct nfs_fh *); |
Chuck Lever | 32e62b7 | 2013-10-17 14:12:28 -0400 | [diff] [blame] | 177 | extern int nfs4_update_server(struct nfs_server *server, const char *hostname, |
Trond Myklebust | 292f503 | 2014-02-16 21:42:56 -0500 | [diff] [blame] | 178 | struct sockaddr *sap, size_t salen, |
| 179 | struct net *net); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 180 | extern void nfs_free_server(struct nfs_server *server); |
| 181 | extern struct nfs_server *nfs_clone_server(struct nfs_server *, |
| 182 | struct nfs_fh *, |
Bryan Schumaker | 7e6eb68 | 2012-04-27 13:27:42 -0400 | [diff] [blame] | 183 | struct nfs_fattr *, |
| 184 | rpc_authflavor_t); |
Trond Myklebust | 4697bd5 | 2012-05-23 13:24:36 -0400 | [diff] [blame] | 185 | extern int nfs_wait_client_init_complete(const struct nfs_client *clp); |
Andy Adamson | 76db6d9 | 2009-04-01 09:22:38 -0400 | [diff] [blame] | 186 | extern void nfs_mark_client_ready(struct nfs_client *clp, int state); |
Andy Adamson | d83217c | 2011-03-01 01:34:17 +0000 | [diff] [blame] | 187 | extern struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp, |
| 188 | const struct sockaddr *ds_addr, |
Andy Adamson | 98fc685 | 2012-04-27 17:53:45 -0400 | [diff] [blame] | 189 | int ds_addrlen, int ds_proto, |
| 190 | unsigned int ds_timeo, |
Peng Tao | 064172f | 2014-05-29 21:07:00 +0800 | [diff] [blame] | 191 | unsigned int ds_retrans, |
Peng Tao | 30626f9 | 2014-05-30 18:15:58 +0800 | [diff] [blame] | 192 | u32 minor_version, |
Peng Tao | 064172f | 2014-05-29 21:07:00 +0800 | [diff] [blame] | 193 | rpc_authflavor_t au_flavor); |
Andy Adamson | 0e20162 | 2013-09-06 14:14:00 -0400 | [diff] [blame] | 194 | extern struct rpc_clnt *nfs4_find_or_create_ds_client(struct nfs_client *, |
| 195 | struct inode *); |
Peng Tao | 1a04c6e | 2014-05-30 18:15:57 +0800 | [diff] [blame] | 196 | extern struct nfs_client *nfs3_set_ds_client(struct nfs_client *mds_clp, |
| 197 | const struct sockaddr *ds_addr, int ds_addrlen, |
| 198 | int ds_proto, unsigned int ds_timeo, |
| 199 | unsigned int ds_retrans, rpc_authflavor_t au_flavor); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 200 | #ifdef CONFIG_PROC_FS |
| 201 | extern int __init nfs_fs_proc_init(void); |
| 202 | extern void nfs_fs_proc_exit(void); |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 203 | extern int nfs_fs_proc_net_init(struct net *net); |
| 204 | extern void nfs_fs_proc_net_exit(struct net *net); |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 205 | #else |
Eric W. Biederman | 65b3885 | 2014-07-31 04:35:20 -0700 | [diff] [blame] | 206 | static inline int nfs_fs_proc_net_init(struct net *net) |
| 207 | { |
| 208 | return 0; |
| 209 | } |
| 210 | static inline void nfs_fs_proc_net_exit(struct net *net) |
| 211 | { |
| 212 | } |
David Howells | 6aaca56 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 213 | static inline int nfs_fs_proc_init(void) |
| 214 | { |
| 215 | return 0; |
| 216 | } |
| 217 | static inline void nfs_fs_proc_exit(void) |
| 218 | { |
| 219 | } |
| 220 | #endif |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 221 | |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 222 | /* callback_xdr.c */ |
| 223 | extern struct svc_version nfs4_callback_version1; |
Alexandros Batsakis | 07bccc2 | 2009-12-05 13:19:01 -0500 | [diff] [blame] | 224 | extern struct svc_version nfs4_callback_version4; |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 225 | |
Fred Isaman | 4db6e0b | 2012-04-20 14:47:46 -0400 | [diff] [blame] | 226 | struct nfs_pageio_descriptor; |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 227 | /* pagelist.c */ |
| 228 | extern int __init nfs_init_nfspagecache(void); |
David Brownell | 266bee8 | 2006-06-27 12:59:15 -0700 | [diff] [blame] | 229 | extern void nfs_destroy_nfspagecache(void); |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 230 | extern int __init nfs_init_readpagecache(void); |
David Brownell | 266bee8 | 2006-06-27 12:59:15 -0700 | [diff] [blame] | 231 | extern void nfs_destroy_readpagecache(void); |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 232 | extern int __init nfs_init_writepagecache(void); |
David Brownell | 266bee8 | 2006-06-27 12:59:15 -0700 | [diff] [blame] | 233 | extern void nfs_destroy_writepagecache(void); |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 234 | |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 235 | extern int __init nfs_init_directcache(void); |
David Brownell | 266bee8 | 2006-06-27 12:59:15 -0700 | [diff] [blame] | 236 | extern void nfs_destroy_directcache(void); |
Fred Isaman | 4db6e0b | 2012-04-20 14:47:46 -0400 | [diff] [blame] | 237 | extern void nfs_pgheader_init(struct nfs_pageio_descriptor *desc, |
| 238 | struct nfs_pgio_header *hdr, |
| 239 | void (*release)(struct nfs_pgio_header *hdr)); |
| 240 | void nfs_set_pgio_error(struct nfs_pgio_header *hdr, int error, loff_t pos); |
Benjamin Coddington | 210c7c1 | 2016-01-06 10:40:18 -0500 | [diff] [blame] | 241 | int nfs_iocounter_wait(struct nfs_lock_context *l_ctx); |
Trond Myklebust | 577b423 | 2013-04-08 21:38:12 -0400 | [diff] [blame] | 242 | |
Anna Schumaker | 41d8d5b | 2014-05-06 09:12:40 -0400 | [diff] [blame] | 243 | extern const struct nfs_pageio_ops nfs_pgio_rw_ops; |
Weston Andros Adamson | 1e7f3a4 | 2014-06-09 11:48:33 -0400 | [diff] [blame] | 244 | struct nfs_pgio_header *nfs_pgio_header_alloc(const struct nfs_rw_ops *); |
| 245 | void nfs_pgio_header_free(struct nfs_pgio_header *); |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 246 | void nfs_pgio_data_destroy(struct nfs_pgio_header *); |
Anna Schumaker | ef2c488 | 2014-05-06 09:12:36 -0400 | [diff] [blame] | 247 | int nfs_generic_pgio(struct nfs_pageio_descriptor *, struct nfs_pgio_header *); |
Peng Tao | 46a5ab4 | 2014-06-13 23:02:25 +0800 | [diff] [blame] | 248 | int nfs_initiate_pgio(struct rpc_clnt *clnt, struct nfs_pgio_header *hdr, |
| 249 | struct rpc_cred *cred, const struct nfs_rpc_ops *rpc_ops, |
| 250 | const struct rpc_call_ops *call_ops, int how, int flags); |
Weston Andros Adamson | d458138 | 2014-07-11 10:20:48 -0400 | [diff] [blame] | 251 | void nfs_free_request(struct nfs_page *req); |
Peng Tao | 48d635f | 2014-11-10 08:35:35 +0800 | [diff] [blame] | 252 | struct nfs_pgio_mirror * |
| 253 | nfs_pgio_current_mirror(struct nfs_pageio_descriptor *desc); |
Anna Schumaker | 00bfa30 | 2014-05-06 09:12:29 -0400 | [diff] [blame] | 254 | |
Peng Tao | 47af81f | 2014-11-10 08:35:34 +0800 | [diff] [blame] | 255 | static inline bool nfs_pgio_has_mirroring(struct nfs_pageio_descriptor *desc) |
| 256 | { |
| 257 | WARN_ON_ONCE(desc->pg_mirror_count < 1); |
| 258 | return desc->pg_mirror_count > 1; |
| 259 | } |
| 260 | |
Trond Myklebust | 138a293 | 2015-10-01 17:17:06 -0400 | [diff] [blame] | 261 | static inline bool nfs_match_open_context(const struct nfs_open_context *ctx1, |
| 262 | const struct nfs_open_context *ctx2) |
| 263 | { |
| 264 | return ctx1->cred == ctx2->cred && ctx1->state == ctx2->state; |
| 265 | } |
| 266 | |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 267 | /* nfs2xdr.c */ |
| 268 | extern struct rpc_procinfo nfs_procedures[]; |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 269 | extern int nfs2_decode_dirent(struct xdr_stream *, |
| 270 | struct nfs_entry *, int); |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 271 | |
| 272 | /* nfs3xdr.c */ |
| 273 | extern struct rpc_procinfo nfs3_procedures[]; |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 274 | extern int nfs3_decode_dirent(struct xdr_stream *, |
| 275 | struct nfs_entry *, int); |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 276 | |
| 277 | /* nfs4xdr.c */ |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 278 | #if IS_ENABLED(CONFIG_NFS_V4) |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 279 | extern int nfs4_decode_dirent(struct xdr_stream *, |
| 280 | struct nfs_entry *, int); |
David Howells | 7d4e274 | 2006-08-22 20:06:07 -0400 | [diff] [blame] | 281 | #endif |
Alexandros Batsakis | 2449ea2 | 2009-12-05 13:36:55 -0500 | [diff] [blame] | 282 | #ifdef CONFIG_NFS_V4_1 |
| 283 | extern const u32 nfs41_maxread_overhead; |
| 284 | extern const u32 nfs41_maxwrite_overhead; |
Andy Adamson | f1c097b | 2013-06-25 19:02:53 -0400 | [diff] [blame] | 285 | extern const u32 nfs41_maxgetdevinfo_overhead; |
Alexandros Batsakis | 2449ea2 | 2009-12-05 13:36:55 -0500 | [diff] [blame] | 286 | #endif |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 287 | |
| 288 | /* nfs4proc.c */ |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 289 | #if IS_ENABLED(CONFIG_NFS_V4) |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 290 | extern struct rpc_procinfo nfs4_procedures[]; |
Andrew Morton | d75d541 | 2006-06-25 02:41:26 -0700 | [diff] [blame] | 291 | #endif |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 292 | |
Anna Schumaker | 694e096 | 2013-11-13 12:29:08 -0500 | [diff] [blame] | 293 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
| 294 | extern struct nfs4_label *nfs4_label_alloc(struct nfs_server *server, gfp_t flags); |
Kinglong Mee | a49c269 | 2015-07-27 15:31:38 +0800 | [diff] [blame] | 295 | static inline struct nfs4_label * |
| 296 | nfs4_label_copy(struct nfs4_label *dst, struct nfs4_label *src) |
| 297 | { |
| 298 | if (!dst || !src) |
| 299 | return NULL; |
| 300 | |
| 301 | if (src->len > NFS4_MAXLABELLEN) |
| 302 | return NULL; |
| 303 | |
| 304 | dst->lfs = src->lfs; |
| 305 | dst->pi = src->pi; |
| 306 | dst->len = src->len; |
| 307 | memcpy(dst->label, src->label, src->len); |
| 308 | |
| 309 | return dst; |
| 310 | } |
Anna Schumaker | 694e096 | 2013-11-13 12:29:08 -0500 | [diff] [blame] | 311 | static inline void nfs4_label_free(struct nfs4_label *label) |
| 312 | { |
| 313 | if (label) { |
| 314 | kfree(label->label); |
| 315 | kfree(label); |
| 316 | } |
| 317 | return; |
| 318 | } |
Trond Myklebust | fd1defc | 2014-02-06 14:38:53 -0500 | [diff] [blame] | 319 | |
| 320 | static inline void nfs_zap_label_cache_locked(struct nfs_inode *nfsi) |
| 321 | { |
| 322 | if (nfs_server_capable(&nfsi->vfs_inode, NFS_CAP_SECURITY_LABEL)) |
| 323 | nfsi->cache_validity |= NFS_INO_INVALID_LABEL; |
| 324 | } |
Anna Schumaker | 694e096 | 2013-11-13 12:29:08 -0500 | [diff] [blame] | 325 | #else |
| 326 | static inline struct nfs4_label *nfs4_label_alloc(struct nfs_server *server, gfp_t flags) { return NULL; } |
| 327 | static inline void nfs4_label_free(void *label) {} |
Trond Myklebust | fd1defc | 2014-02-06 14:38:53 -0500 | [diff] [blame] | 328 | static inline void nfs_zap_label_cache_locked(struct nfs_inode *nfsi) |
| 329 | { |
| 330 | } |
Kinglong Mee | a49c269 | 2015-07-27 15:31:38 +0800 | [diff] [blame] | 331 | static inline struct nfs4_label * |
| 332 | nfs4_label_copy(struct nfs4_label *dst, struct nfs4_label *src) |
| 333 | { |
| 334 | return NULL; |
| 335 | } |
Anna Schumaker | 694e096 | 2013-11-13 12:29:08 -0500 | [diff] [blame] | 336 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ |
| 337 | |
Trond Myklebust | 7fe5c39 | 2009-03-19 15:35:50 -0400 | [diff] [blame] | 338 | /* proc.c */ |
| 339 | void nfs_close_context(struct nfs_open_context *ctx, int is_sync); |
Chuck Lever | 8cab4c3 | 2012-05-21 22:45:59 -0400 | [diff] [blame] | 340 | extern struct nfs_client *nfs_init_client(struct nfs_client *clp, |
Andy Adamson | 45a52a0 | 2011-03-01 01:34:08 +0000 | [diff] [blame] | 341 | const struct rpc_timeout *timeparms, |
Andy Adamson | f840729 | 2013-07-24 11:59:49 -0400 | [diff] [blame] | 342 | const char *ip_addr); |
Trond Myklebust | 7fe5c39 | 2009-03-19 15:35:50 -0400 | [diff] [blame] | 343 | |
Trond Myklebust | 979df72 | 2006-07-25 11:28:19 -0400 | [diff] [blame] | 344 | /* dir.c */ |
Trond Myklebust | 311324a | 2014-02-07 17:02:08 -0500 | [diff] [blame] | 345 | extern void nfs_force_use_readdirplus(struct inode *dir); |
Dave Chinner | 1ab6c49 | 2013-08-28 10:18:09 +1000 | [diff] [blame] | 346 | extern unsigned long nfs_access_cache_count(struct shrinker *shrink, |
| 347 | struct shrink_control *sc); |
| 348 | extern unsigned long nfs_access_cache_scan(struct shrinker *shrink, |
| 349 | struct shrink_control *sc); |
Bryan Schumaker | 597d928 | 2012-07-16 16:39:10 -0400 | [diff] [blame] | 350 | struct dentry *nfs_lookup(struct inode *, struct dentry *, unsigned int); |
| 351 | int nfs_create(struct inode *, struct dentry *, umode_t, bool); |
| 352 | int nfs_mkdir(struct inode *, struct dentry *, umode_t); |
| 353 | int nfs_rmdir(struct inode *, struct dentry *); |
| 354 | int nfs_unlink(struct inode *, struct dentry *); |
| 355 | int nfs_symlink(struct inode *, struct dentry *, const char *); |
| 356 | int nfs_link(struct dentry *, struct inode *, struct dentry *); |
| 357 | int nfs_mknod(struct inode *, struct dentry *, umode_t, dev_t); |
| 358 | int nfs_rename(struct inode *, struct dentry *, struct inode *, struct dentry *); |
Trond Myklebust | 979df72 | 2006-07-25 11:28:19 -0400 | [diff] [blame] | 359 | |
Bryan Schumaker | ce4ef7c | 2012-07-16 16:39:15 -0400 | [diff] [blame] | 360 | /* file.c */ |
Christoph Hellwig | 4ff79bc | 2016-03-02 17:35:54 +0100 | [diff] [blame] | 361 | int nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync); |
Bryan Schumaker | ce4ef7c | 2012-07-16 16:39:15 -0400 | [diff] [blame] | 362 | loff_t nfs_file_llseek(struct file *, loff_t, int); |
Al Viro | 3aa2d19 | 2014-04-02 20:14:12 -0400 | [diff] [blame] | 363 | ssize_t nfs_file_read(struct kiocb *, struct iov_iter *); |
Bryan Schumaker | ce4ef7c | 2012-07-16 16:39:15 -0400 | [diff] [blame] | 364 | ssize_t nfs_file_splice_read(struct file *, loff_t *, struct pipe_inode_info *, |
| 365 | size_t, unsigned int); |
| 366 | int nfs_file_mmap(struct file *, struct vm_area_struct *); |
Al Viro | edaf436 | 2014-04-03 14:07:25 -0400 | [diff] [blame] | 367 | ssize_t nfs_file_write(struct kiocb *, struct iov_iter *); |
Bryan Schumaker | ce4ef7c | 2012-07-16 16:39:15 -0400 | [diff] [blame] | 368 | int nfs_file_release(struct inode *, struct file *); |
| 369 | int nfs_lock(struct file *, int, struct file_lock *); |
| 370 | int nfs_flock(struct file *, int, struct file_lock *); |
Bryan Schumaker | ce4ef7c | 2012-07-16 16:39:15 -0400 | [diff] [blame] | 371 | int nfs_check_flags(int); |
Bryan Schumaker | ce4ef7c | 2012-07-16 16:39:15 -0400 | [diff] [blame] | 372 | |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 373 | /* inode.c */ |
Trond Myklebust | 5746006 | 2008-02-19 20:04:22 -0500 | [diff] [blame] | 374 | extern struct workqueue_struct *nfsiod_workqueue; |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 375 | extern struct inode *nfs_alloc_inode(struct super_block *sb); |
| 376 | extern void nfs_destroy_inode(struct inode *); |
Christoph Hellwig | a9185b4 | 2010-03-05 09:21:37 +0100 | [diff] [blame] | 377 | extern int nfs_write_inode(struct inode *, struct writeback_control *); |
Trond Myklebust | eed9935 | 2012-12-14 14:36:36 -0500 | [diff] [blame] | 378 | extern int nfs_drop_inode(struct inode *); |
Bryan Schumaker | 19d87ca | 2012-07-30 16:05:21 -0400 | [diff] [blame] | 379 | extern void nfs_clear_inode(struct inode *); |
Al Viro | b57922d | 2010-06-07 14:34:48 -0400 | [diff] [blame] | 380 | extern void nfs_evict_inode(struct inode *); |
Trond Myklebust | f41f741 | 2008-06-11 17:39:04 -0400 | [diff] [blame] | 381 | void nfs_zap_acl_cache(struct inode *inode); |
Peter Zijlstra | dfd01f0 | 2015-12-13 22:11:16 +0100 | [diff] [blame] | 382 | extern int nfs_wait_bit_killable(struct wait_bit_key *key, int mode); |
Benjamin Coddington | 210c7c1 | 2016-01-06 10:40:18 -0500 | [diff] [blame] | 383 | extern int nfs_wait_atomic_killable(atomic_t *p); |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 384 | |
| 385 | /* super.c */ |
Bryan Schumaker | 6a74490 | 2012-07-30 16:05:20 -0400 | [diff] [blame] | 386 | extern const struct super_operations nfs_sops; |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 387 | extern struct file_system_type nfs_fs_type; |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 388 | extern struct file_system_type nfs_xdev_fs_type; |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 389 | #if IS_ENABLED(CONFIG_NFS_V4) |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 390 | extern struct file_system_type nfs4_xdev_fs_type; |
| 391 | extern struct file_system_type nfs4_referral_fs_type; |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 392 | #endif |
Weston Andros Adamson | 4d4b69d | 2013-10-18 15:15:19 -0400 | [diff] [blame] | 393 | bool nfs_auth_info_match(const struct nfs_auth_info *, rpc_authflavor_t); |
Bryan Schumaker | ff9099f2 | 2012-07-30 16:05:18 -0400 | [diff] [blame] | 394 | struct dentry *nfs_try_mount(int, const char *, struct nfs_mount_info *, |
| 395 | struct nfs_subversion *); |
Bryan Schumaker | fbdefd6 | 2012-07-16 16:39:20 -0400 | [diff] [blame] | 396 | void nfs_initialise_sb(struct super_block *); |
| 397 | int nfs_set_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *); |
| 398 | int nfs_clone_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *); |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 399 | struct dentry *nfs_fs_mount_common(struct nfs_server *, int, const char *, |
| 400 | struct nfs_mount_info *, struct nfs_subversion *); |
Bryan Schumaker | fbdefd6 | 2012-07-16 16:39:20 -0400 | [diff] [blame] | 401 | struct dentry *nfs_fs_mount(struct file_system_type *, int, const char *, void *); |
| 402 | struct dentry * nfs_xdev_mount_common(struct file_system_type *, int, |
| 403 | const char *, struct nfs_mount_info *); |
| 404 | void nfs_kill_super(struct super_block *); |
| 405 | void nfs_fill_super(struct super_block *, struct nfs_mount_info *); |
Dominik Hackl | 4ebd9ab | 2006-07-02 17:29:26 +0200 | [diff] [blame] | 406 | |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 407 | extern struct rpc_stat nfs_rpcstat; |
Dominik Hackl | 4ebd9ab | 2006-07-02 17:29:26 +0200 | [diff] [blame] | 408 | |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 409 | extern int __init register_nfs_fs(void); |
| 410 | extern void __exit unregister_nfs_fs(void); |
Trond Myklebust | ea7c38f | 2015-02-05 15:13:24 -0500 | [diff] [blame] | 411 | extern bool nfs_sb_active(struct super_block *sb); |
Trond Myklebust | 1daef0a | 2008-07-27 18:19:01 -0400 | [diff] [blame] | 412 | extern void nfs_sb_deactive(struct super_block *sb); |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 413 | |
Trond Myklebust | a5864c9 | 2016-06-03 17:07:19 -0400 | [diff] [blame] | 414 | /* io.c */ |
| 415 | extern void nfs_start_io_read(struct inode *inode); |
| 416 | extern void nfs_end_io_read(struct inode *inode); |
| 417 | extern void nfs_start_io_write(struct inode *inode); |
| 418 | extern void nfs_end_io_write(struct inode *inode); |
| 419 | extern void nfs_start_io_direct(struct inode *inode); |
| 420 | extern void nfs_end_io_direct(struct inode *inode); |
| 421 | |
Trond Myklebust | 651b0e7 | 2016-06-25 17:24:46 -0400 | [diff] [blame^] | 422 | static inline bool nfs_file_io_is_buffered(struct nfs_inode *nfsi) |
| 423 | { |
| 424 | return test_bit(NFS_INO_ODIRECT, &nfsi->flags) == 0; |
| 425 | } |
| 426 | |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 427 | /* namespace.c */ |
Ben Hutchings | 97a5486 | 2012-10-21 19:23:52 +0100 | [diff] [blame] | 428 | #define NFS_PATH_CANONICAL 1 |
Al Viro | b514f87 | 2011-03-16 06:26:11 -0400 | [diff] [blame] | 429 | extern char *nfs_path(char **p, struct dentry *dentry, |
Ben Hutchings | 97a5486 | 2012-10-21 19:23:52 +0100 | [diff] [blame] | 430 | char *buffer, ssize_t buflen, unsigned flags); |
David Howells | 36d43a4 | 2011-01-14 18:45:42 +0000 | [diff] [blame] | 431 | extern struct vfsmount *nfs_d_automount(struct path *path); |
Bryan Schumaker | 281cad4 | 2012-04-27 13:27:45 -0400 | [diff] [blame] | 432 | struct vfsmount *nfs_submount(struct nfs_server *, struct dentry *, |
| 433 | struct nfs_fh *, struct nfs_fattr *); |
| 434 | struct vfsmount *nfs_do_submount(struct dentry *, struct nfs_fh *, |
| 435 | struct nfs_fattr *, rpc_authflavor_t); |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 436 | |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 437 | /* getroot.c */ |
Al Viro | 0d5839a | 2011-03-16 05:27:27 -0400 | [diff] [blame] | 438 | extern struct dentry *nfs_get_root(struct super_block *, struct nfs_fh *, |
| 439 | const char *); |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 440 | #if IS_ENABLED(CONFIG_NFS_V4) |
Al Viro | 0d5839a | 2011-03-16 05:27:27 -0400 | [diff] [blame] | 441 | extern struct dentry *nfs4_get_root(struct super_block *, struct nfs_fh *, |
| 442 | const char *); |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 443 | |
Trond Myklebust | 5e6b199 | 2013-09-07 12:58:57 -0400 | [diff] [blame] | 444 | extern int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh, bool); |
David Howells | 7d4e274 | 2006-08-22 20:06:07 -0400 | [diff] [blame] | 445 | #endif |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 446 | |
Fred Isaman | 061ae2e | 2012-04-20 14:47:48 -0400 | [diff] [blame] | 447 | struct nfs_pgio_completion_ops; |
Andy Adamson | f11c88a | 2009-04-01 09:22:25 -0400 | [diff] [blame] | 448 | /* read.c */ |
Fred Isaman | 584aa81 | 2012-04-20 14:47:51 -0400 | [diff] [blame] | 449 | extern void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, |
Christoph Hellwig | fab5fc2 | 2014-04-16 15:07:22 +0200 | [diff] [blame] | 450 | struct inode *inode, bool force_mds, |
Fred Isaman | 584aa81 | 2012-04-20 14:47:51 -0400 | [diff] [blame] | 451 | const struct nfs_pgio_completion_ops *compl_ops); |
Andy Adamson | f11c88a | 2009-04-01 09:22:25 -0400 | [diff] [blame] | 452 | extern void nfs_read_prepare(struct rpc_task *task, void *calldata); |
Trond Myklebust | 493292d | 2011-07-13 15:58:28 -0400 | [diff] [blame] | 453 | extern void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio); |
Trond Myklebust | e885de1 | 2011-06-10 13:30:23 -0400 | [diff] [blame] | 454 | |
Bryan Schumaker | fbdefd6 | 2012-07-16 16:39:20 -0400 | [diff] [blame] | 455 | /* super.c */ |
| 456 | void nfs_clone_super(struct super_block *, struct nfs_mount_info *); |
| 457 | void nfs_umount_begin(struct super_block *); |
| 458 | int nfs_statfs(struct dentry *, struct kstatfs *); |
| 459 | int nfs_show_options(struct seq_file *, struct dentry *); |
| 460 | int nfs_show_devname(struct seq_file *, struct dentry *); |
| 461 | int nfs_show_path(struct seq_file *, struct dentry *); |
| 462 | int nfs_show_stats(struct seq_file *, struct dentry *); |
Bryan Schumaker | fbdefd6 | 2012-07-16 16:39:20 -0400 | [diff] [blame] | 463 | int nfs_remount(struct super_block *sb, int *flags, char *raw_data); |
| 464 | |
Andy Adamson | def6ed7 | 2009-04-01 09:22:26 -0400 | [diff] [blame] | 465 | /* write.c */ |
Fred Isaman | 1763da1 | 2012-04-20 14:47:57 -0400 | [diff] [blame] | 466 | extern void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, |
Christoph Hellwig | a20c93e | 2014-04-16 15:07:21 +0200 | [diff] [blame] | 467 | struct inode *inode, int ioflags, bool force_mds, |
Fred Isaman | 1763da1 | 2012-04-20 14:47:57 -0400 | [diff] [blame] | 468 | const struct nfs_pgio_completion_ops *compl_ops); |
Trond Myklebust | dce8129 | 2011-07-13 15:59:19 -0400 | [diff] [blame] | 469 | extern void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio); |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 470 | extern void nfs_commit_free(struct nfs_commit_data *p); |
Andy Adamson | def6ed7 | 2009-04-01 09:22:26 -0400 | [diff] [blame] | 471 | extern void nfs_write_prepare(struct rpc_task *task, void *calldata); |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 472 | extern void nfs_commit_prepare(struct rpc_task *task, void *calldata); |
| 473 | extern int nfs_initiate_commit(struct rpc_clnt *clnt, |
| 474 | struct nfs_commit_data *data, |
Peng Tao | c36aae9 | 2014-06-09 07:10:14 +0800 | [diff] [blame] | 475 | const struct nfs_rpc_ops *nfs_ops, |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 476 | const struct rpc_call_ops *call_ops, |
Andy Adamson | 9f0ec176 | 2012-04-27 17:53:44 -0400 | [diff] [blame] | 477 | int how, int flags); |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 478 | extern void nfs_init_commit(struct nfs_commit_data *data, |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 479 | struct list_head *head, |
Fred Isaman | f453a54 | 2012-04-20 14:47:54 -0400 | [diff] [blame] | 480 | struct pnfs_layout_segment *lseg, |
| 481 | struct nfs_commit_info *cinfo); |
Fred Isaman | 1763da1 | 2012-04-20 14:47:57 -0400 | [diff] [blame] | 482 | int nfs_scan_commit_list(struct list_head *src, struct list_head *dst, |
| 483 | struct nfs_commit_info *cinfo, int max); |
Anna Schumaker | ce59515 | 2014-05-06 09:12:34 -0400 | [diff] [blame] | 484 | unsigned long nfs_reqs_to_commit(struct nfs_commit_info *); |
Fred Isaman | 1763da1 | 2012-04-20 14:47:57 -0400 | [diff] [blame] | 485 | int nfs_scan_commit(struct inode *inode, struct list_head *dst, |
| 486 | struct nfs_commit_info *cinfo); |
| 487 | void nfs_mark_request_commit(struct nfs_page *req, |
| 488 | struct pnfs_layout_segment *lseg, |
Weston Andros Adamson | b57ff13 | 2014-09-05 18:20:21 -0400 | [diff] [blame] | 489 | struct nfs_commit_info *cinfo, |
| 490 | u32 ds_commit_idx); |
Weston Andros Adamson | c65e625 | 2014-06-09 11:48:36 -0400 | [diff] [blame] | 491 | int nfs_write_need_commit(struct nfs_pgio_header *); |
Trond Myklebust | a08a8cd | 2015-02-26 17:36:09 -0500 | [diff] [blame] | 492 | void nfs_writeback_update_inode(struct nfs_pgio_header *hdr); |
Anna Schumaker | 67911c8 | 2016-01-19 14:37:30 -0500 | [diff] [blame] | 493 | int nfs_commit_file(struct file *file, struct nfs_write_verifier *verf); |
Fred Isaman | 1763da1 | 2012-04-20 14:47:57 -0400 | [diff] [blame] | 494 | int nfs_generic_commit_list(struct inode *inode, struct list_head *head, |
| 495 | int how, struct nfs_commit_info *cinfo); |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 496 | void nfs_retry_commit(struct list_head *page_list, |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 497 | struct pnfs_layout_segment *lseg, |
Weston Andros Adamson | b57ff13 | 2014-09-05 18:20:21 -0400 | [diff] [blame] | 498 | struct nfs_commit_info *cinfo, |
| 499 | u32 ds_commit_idx); |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 500 | void nfs_commitdata_release(struct nfs_commit_data *data); |
Anna Schumaker | 6272dcc | 2016-01-15 16:54:15 -0500 | [diff] [blame] | 501 | void nfs_request_add_commit_list(struct nfs_page *req, |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 502 | struct nfs_commit_info *cinfo); |
Trond Myklebust | 86d80f9 | 2015-07-31 16:24:30 -0400 | [diff] [blame] | 503 | void nfs_request_add_commit_list_locked(struct nfs_page *req, |
| 504 | struct list_head *dst, |
| 505 | struct nfs_commit_info *cinfo); |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 506 | void nfs_request_remove_commit_list(struct nfs_page *req, |
| 507 | struct nfs_commit_info *cinfo); |
| 508 | void nfs_init_cinfo(struct nfs_commit_info *cinfo, |
| 509 | struct inode *inode, |
| 510 | struct nfs_direct_req *dreq); |
Andy Adamson | dc24826 | 2013-08-14 11:59:16 -0400 | [diff] [blame] | 511 | int nfs_key_timeout_notify(struct file *filp, struct inode *inode); |
| 512 | bool nfs_ctx_key_to_expire(struct nfs_open_context *ctx); |
Weston Andros Adamson | a7d42dd | 2014-09-19 10:55:07 -0400 | [diff] [blame] | 513 | void nfs_pageio_stop_mirroring(struct nfs_pageio_descriptor *pgio); |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 514 | |
Trond Myklebust | a5314a7 | 2016-06-01 21:42:32 -0400 | [diff] [blame] | 515 | #ifdef CONFIG_NFS_V4_1 |
| 516 | static inline |
| 517 | void nfs_clear_pnfs_ds_commit_verifiers(struct pnfs_ds_commit_info *cinfo) |
| 518 | { |
| 519 | int i; |
| 520 | |
| 521 | for (i = 0; i < cinfo->nbuckets; i++) |
| 522 | cinfo->buckets[i].direct_verf.committed = NFS_INVALID_STABLE_HOW; |
| 523 | } |
| 524 | #else |
| 525 | static inline |
| 526 | void nfs_clear_pnfs_ds_commit_verifiers(struct pnfs_ds_commit_info *cinfo) |
| 527 | { |
| 528 | } |
| 529 | #endif |
| 530 | |
| 531 | |
Trond Myklebust | 074cc1d | 2009-08-10 08:54:13 -0400 | [diff] [blame] | 532 | #ifdef CONFIG_MIGRATION |
| 533 | extern int nfs_migrate_page(struct address_space *, |
Mel Gorman | a6bc32b | 2012-01-12 17:19:43 -0800 | [diff] [blame] | 534 | struct page *, struct page *, enum migrate_mode); |
Trond Myklebust | 074cc1d | 2009-08-10 08:54:13 -0400 | [diff] [blame] | 535 | #else |
| 536 | #define nfs_migrate_page NULL |
| 537 | #endif |
Andy Adamson | def6ed7 | 2009-04-01 09:22:26 -0400 | [diff] [blame] | 538 | |
Trond Myklebust | 8fc3c38 | 2016-06-01 21:32:24 -0400 | [diff] [blame] | 539 | static inline int |
| 540 | nfs_write_verifier_cmp(const struct nfs_write_verifier *v1, |
| 541 | const struct nfs_write_verifier *v2) |
| 542 | { |
| 543 | return memcmp(v1->data, v2->data, sizeof(v1->data)); |
| 544 | } |
| 545 | |
Jeff Layton | 0e862a4 | 2014-03-17 07:06:55 -0400 | [diff] [blame] | 546 | /* unlink.c */ |
| 547 | extern struct rpc_task * |
| 548 | nfs_async_rename(struct inode *old_dir, struct inode *new_dir, |
| 549 | struct dentry *old_dentry, struct dentry *new_dentry, |
| 550 | void (*complete)(struct rpc_task *, struct nfs_renamedata *)); |
| 551 | extern int nfs_sillyrename(struct inode *dir, struct dentry *dentry); |
| 552 | |
Fred Isaman | 1763da1 | 2012-04-20 14:47:57 -0400 | [diff] [blame] | 553 | /* direct.c */ |
| 554 | void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo, |
| 555 | struct nfs_direct_req *dreq); |
Peng Tao | 6296556 | 2012-09-25 14:55:57 +0800 | [diff] [blame] | 556 | extern ssize_t nfs_dreq_bytes_left(struct nfs_direct_req *dreq); |
Fred Isaman | 1763da1 | 2012-04-20 14:47:57 -0400 | [diff] [blame] | 557 | |
Andy Adamson | cccef3b | 2009-04-01 09:22:03 -0400 | [diff] [blame] | 558 | /* nfs4proc.c */ |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 559 | extern void __nfs4_read_done_cb(struct nfs_pgio_header *); |
Chuck Lever | 8cab4c3 | 2012-05-21 22:45:59 -0400 | [diff] [blame] | 560 | extern struct nfs_client *nfs4_init_client(struct nfs_client *clp, |
Andy Adamson | 45a52a0 | 2011-03-01 01:34:08 +0000 | [diff] [blame] | 561 | const struct rpc_timeout *timeparms, |
Andy Adamson | f840729 | 2013-07-24 11:59:49 -0400 | [diff] [blame] | 562 | const char *ip_addr); |
Chuck Lever | 05f4c35 | 2012-09-14 17:24:32 -0400 | [diff] [blame] | 563 | extern int nfs40_walk_client_list(struct nfs_client *clp, |
| 564 | struct nfs_client **result, |
| 565 | struct rpc_cred *cred); |
| 566 | extern int nfs41_walk_client_list(struct nfs_client *clp, |
| 567 | struct nfs_client **result, |
| 568 | struct rpc_cred *cred); |
Andy Adamson | cccef3b | 2009-04-01 09:22:03 -0400 | [diff] [blame] | 569 | |
Trond Myklebust | ea7c38f | 2015-02-05 15:13:24 -0500 | [diff] [blame] | 570 | static inline struct inode *nfs_igrab_and_active(struct inode *inode) |
| 571 | { |
| 572 | inode = igrab(inode); |
| 573 | if (inode != NULL && !nfs_sb_active(inode->i_sb)) { |
| 574 | iput(inode); |
| 575 | inode = NULL; |
| 576 | } |
| 577 | return inode; |
| 578 | } |
| 579 | |
| 580 | static inline void nfs_iput_and_deactive(struct inode *inode) |
| 581 | { |
| 582 | if (inode != NULL) { |
| 583 | struct super_block *sb = inode->i_sb; |
| 584 | |
| 585 | iput(inode); |
| 586 | nfs_sb_deactive(sb); |
| 587 | } |
| 588 | } |
| 589 | |
Andy Adamson | 557134a | 2009-04-01 09:21:53 -0400 | [diff] [blame] | 590 | /* |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 591 | * Determine the device name as a string |
| 592 | */ |
Al Viro | b514f87 | 2011-03-16 06:26:11 -0400 | [diff] [blame] | 593 | static inline char *nfs_devname(struct dentry *dentry, |
David Howells | 54ceac4 | 2006-08-22 20:06:13 -0400 | [diff] [blame] | 594 | char *buffer, ssize_t buflen) |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 595 | { |
Al Viro | b514f87 | 2011-03-16 06:26:11 -0400 | [diff] [blame] | 596 | char *dummy; |
Ben Hutchings | 97a5486 | 2012-10-21 19:23:52 +0100 | [diff] [blame] | 597 | return nfs_path(&dummy, dentry, buffer, buflen, NFS_PATH_CANONICAL); |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 598 | } |
| 599 | |
| 600 | /* |
| 601 | * Determine the actual block size (and log2 thereof) |
| 602 | */ |
| 603 | static inline |
| 604 | unsigned long nfs_block_bits(unsigned long bsize, unsigned char *nrbitsp) |
| 605 | { |
| 606 | /* make sure blocksize is a power of two */ |
| 607 | if ((bsize & (bsize - 1)) || nrbitsp) { |
| 608 | unsigned char nrbits; |
| 609 | |
| 610 | for (nrbits = 31; nrbits && !(bsize & (1 << nrbits)); nrbits--) |
| 611 | ; |
| 612 | bsize = 1 << nrbits; |
| 613 | if (nrbitsp) |
| 614 | *nrbitsp = nrbits; |
| 615 | } |
| 616 | |
| 617 | return bsize; |
| 618 | } |
| 619 | |
| 620 | /* |
| 621 | * Calculate the number of 512byte blocks used. |
| 622 | */ |
Chuck Lever | 9eaa67c | 2007-07-01 12:12:19 -0400 | [diff] [blame] | 623 | static inline blkcnt_t nfs_calc_block_size(u64 tsize) |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 624 | { |
Chuck Lever | 9eaa67c | 2007-07-01 12:12:19 -0400 | [diff] [blame] | 625 | blkcnt_t used = (tsize + 511) >> 9; |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 626 | return (used > ULONG_MAX) ? ULONG_MAX : used; |
| 627 | } |
| 628 | |
| 629 | /* |
| 630 | * Compute and set NFS server blocksize |
| 631 | */ |
| 632 | static inline |
| 633 | unsigned long nfs_block_size(unsigned long bsize, unsigned char *nrbitsp) |
| 634 | { |
| 635 | if (bsize < NFS_MIN_FILE_IO_SIZE) |
| 636 | bsize = NFS_DEF_FILE_IO_SIZE; |
| 637 | else if (bsize >= NFS_MAX_FILE_IO_SIZE) |
| 638 | bsize = NFS_MAX_FILE_IO_SIZE; |
| 639 | |
| 640 | return nfs_block_bits(bsize, nrbitsp); |
| 641 | } |
| 642 | |
| 643 | /* |
| 644 | * Determine the maximum file size for a superblock |
| 645 | */ |
| 646 | static inline |
| 647 | void nfs_super_set_maxbytes(struct super_block *sb, __u64 maxfilesize) |
| 648 | { |
| 649 | sb->s_maxbytes = (loff_t)maxfilesize; |
| 650 | if (sb->s_maxbytes > MAX_LFS_FILESIZE || sb->s_maxbytes <= 0) |
| 651 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
| 652 | } |
Trond Myklebust | 49a70f2 | 2006-12-05 00:35:38 -0500 | [diff] [blame] | 653 | |
| 654 | /* |
Tom Haynes | d15bc38 | 2015-02-13 13:19:53 -0800 | [diff] [blame] | 655 | * Record the page as unstable and mark its inode as dirty. |
| 656 | */ |
| 657 | static inline |
Trond Myklebust | 86d80f9 | 2015-07-31 16:24:30 -0400 | [diff] [blame] | 658 | void nfs_mark_page_unstable(struct page *page, struct nfs_commit_info *cinfo) |
Tom Haynes | d15bc38 | 2015-02-13 13:19:53 -0800 | [diff] [blame] | 659 | { |
Trond Myklebust | 86d80f9 | 2015-07-31 16:24:30 -0400 | [diff] [blame] | 660 | if (!cinfo->dreq) { |
| 661 | struct inode *inode = page_file_mapping(page)->host; |
Tom Haynes | d15bc38 | 2015-02-13 13:19:53 -0800 | [diff] [blame] | 662 | |
Trond Myklebust | 86d80f9 | 2015-07-31 16:24:30 -0400 | [diff] [blame] | 663 | inc_zone_page_state(page, NR_UNSTABLE_NFS); |
| 664 | inc_wb_stat(&inode_to_bdi(inode)->wb, WB_RECLAIMABLE); |
| 665 | __mark_inode_dirty(inode, I_DIRTY_DATASYNC); |
| 666 | } |
Tom Haynes | d15bc38 | 2015-02-13 13:19:53 -0800 | [diff] [blame] | 667 | } |
| 668 | |
| 669 | /* |
Trond Myklebust | 49a70f2 | 2006-12-05 00:35:38 -0500 | [diff] [blame] | 670 | * Determine the number of bytes of data the page contains |
| 671 | */ |
| 672 | static inline |
| 673 | unsigned int nfs_page_length(struct page *page) |
| 674 | { |
Mel Gorman | d56b4dd | 2012-07-31 16:45:06 -0700 | [diff] [blame] | 675 | loff_t i_size = i_size_read(page_file_mapping(page)->host); |
Trond Myklebust | 49a70f2 | 2006-12-05 00:35:38 -0500 | [diff] [blame] | 676 | |
| 677 | if (i_size > 0) { |
Mel Gorman | d56b4dd | 2012-07-31 16:45:06 -0700 | [diff] [blame] | 678 | pgoff_t page_index = page_file_index(page); |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 679 | pgoff_t end_index = (i_size - 1) >> PAGE_SHIFT; |
Mel Gorman | d56b4dd | 2012-07-31 16:45:06 -0700 | [diff] [blame] | 680 | if (page_index < end_index) |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 681 | return PAGE_SIZE; |
Mel Gorman | d56b4dd | 2012-07-31 16:45:06 -0700 | [diff] [blame] | 682 | if (page_index == end_index) |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 683 | return ((i_size - 1) & ~PAGE_MASK) + 1; |
Trond Myklebust | 49a70f2 | 2006-12-05 00:35:38 -0500 | [diff] [blame] | 684 | } |
| 685 | return 0; |
| 686 | } |
Trond Myklebust | 8d5658c | 2007-04-10 09:26:35 -0400 | [diff] [blame] | 687 | |
| 688 | /* |
Trond Myklebust | 0b26a0b | 2010-11-20 14:26:44 -0500 | [diff] [blame] | 689 | * Convert a umode to a dirent->d_type |
| 690 | */ |
| 691 | static inline |
| 692 | unsigned char nfs_umode_to_dtype(umode_t mode) |
| 693 | { |
| 694 | return (mode >> 12) & 15; |
| 695 | } |
| 696 | |
| 697 | /* |
Trond Myklebust | 8d5658c | 2007-04-10 09:26:35 -0400 | [diff] [blame] | 698 | * Determine the number of pages in an array of length 'len' and |
| 699 | * with a base offset of 'base' |
| 700 | */ |
| 701 | static inline |
| 702 | unsigned int nfs_page_array_len(unsigned int base, size_t len) |
| 703 | { |
| 704 | return ((unsigned long)len + (unsigned long)base + |
| 705 | PAGE_SIZE - 1) >> PAGE_SHIFT; |
| 706 | } |
Trond Myklebust | 0110ee1 | 2009-12-07 09:00:24 -0500 | [diff] [blame] | 707 | |
Trond Myklebust | 3a1556e | 2012-04-27 13:48:18 -0400 | [diff] [blame] | 708 | /* |
| 709 | * Convert a struct timespec into a 64-bit change attribute |
| 710 | * |
| 711 | * This does approximately the same thing as timespec_to_ns(), |
| 712 | * but for calculation efficiency, we multiply the seconds by |
| 713 | * 1024*1024*1024. |
| 714 | */ |
| 715 | static inline |
| 716 | u64 nfs_timespec_to_change_attr(const struct timespec *ts) |
| 717 | { |
| 718 | return ((u64)ts->tv_sec << 30) + ts->tv_nsec; |
| 719 | } |
Trond Myklebust | 1264a2f | 2013-08-12 16:06:31 -0400 | [diff] [blame] | 720 | |
| 721 | #ifdef CONFIG_CRC32 |
| 722 | /** |
| 723 | * nfs_fhandle_hash - calculate the crc32 hash for the filehandle |
| 724 | * @fh - pointer to filehandle |
| 725 | * |
| 726 | * returns a crc32 hash for the filehandle that is compatible with |
| 727 | * the one displayed by "wireshark". |
| 728 | */ |
| 729 | static inline u32 nfs_fhandle_hash(const struct nfs_fh *fh) |
| 730 | { |
| 731 | return ~crc32_le(0xFFFFFFFF, &fh->data[0], fh->size); |
| 732 | } |
Olga Kornievskaia | 48c9579 | 2015-11-24 13:29:41 -0500 | [diff] [blame] | 733 | static inline u32 nfs_stateid_hash(const nfs4_stateid *stateid) |
| 734 | { |
| 735 | return ~crc32_le(0xFFFFFFFF, &stateid->other[0], |
| 736 | NFS4_STATEID_OTHER_SIZE); |
| 737 | } |
Trond Myklebust | 1264a2f | 2013-08-12 16:06:31 -0400 | [diff] [blame] | 738 | #else |
| 739 | static inline u32 nfs_fhandle_hash(const struct nfs_fh *fh) |
| 740 | { |
| 741 | return 0; |
| 742 | } |
Olga Kornievskaia | 48c9579 | 2015-11-24 13:29:41 -0500 | [diff] [blame] | 743 | static inline u32 nfs_stateid_hash(nfs4_stateid *stateid) |
| 744 | { |
| 745 | return 0; |
| 746 | } |
Trond Myklebust | 1264a2f | 2013-08-12 16:06:31 -0400 | [diff] [blame] | 747 | #endif |
Peng Tao | 0bcbf03 | 2015-12-05 15:57:31 +0800 | [diff] [blame] | 748 | |
| 749 | static inline bool nfs_error_is_fatal(int err) |
| 750 | { |
| 751 | switch (err) { |
| 752 | case -ERESTARTSYS: |
| 753 | case -EIO: |
| 754 | case -ENOSPC: |
| 755 | case -EROFS: |
| 756 | case -E2BIG: |
| 757 | return true; |
| 758 | default: |
| 759 | return false; |
| 760 | } |
| 761 | } |