Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 2 | #include <linux/ceph/ceph_debug.h> |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 3 | |
| 4 | #include <linux/backing-dev.h> |
Sage Weil | c309f0a | 2010-06-30 21:34:01 -0700 | [diff] [blame] | 5 | #include <linux/ctype.h> |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 6 | #include <linux/fs.h> |
| 7 | #include <linux/inet.h> |
| 8 | #include <linux/in6.h> |
| 9 | #include <linux/module.h> |
| 10 | #include <linux/mount.h> |
| 11 | #include <linux/parser.h> |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 12 | #include <linux/sched.h> |
| 13 | #include <linux/seq_file.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 14 | #include <linux/slab.h> |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 15 | #include <linux/statfs.h> |
| 16 | #include <linux/string.h> |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 17 | |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 18 | #include "super.h" |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 19 | #include "mds_client.h" |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 20 | #include "cache.h" |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 21 | |
Sage Weil | 1fe60e5 | 2012-07-30 16:23:22 -0700 | [diff] [blame] | 22 | #include <linux/ceph/ceph_features.h> |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 23 | #include <linux/ceph/decode.h> |
| 24 | #include <linux/ceph/mon_client.h> |
| 25 | #include <linux/ceph/auth.h> |
| 26 | #include <linux/ceph/debugfs.h> |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 27 | |
| 28 | /* |
| 29 | * Ceph superblock operations |
| 30 | * |
| 31 | * Handle the basics of mounting, unmounting. |
| 32 | */ |
| 33 | |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 34 | /* |
| 35 | * super ops |
| 36 | */ |
| 37 | static void ceph_put_super(struct super_block *s) |
| 38 | { |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 39 | struct ceph_fs_client *fsc = ceph_sb_to_client(s); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 40 | |
| 41 | dout("put_super\n"); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 42 | ceph_mdsc_close_sessions(fsc->mdsc); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 43 | } |
| 44 | |
| 45 | static int ceph_statfs(struct dentry *dentry, struct kstatfs *buf) |
| 46 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 47 | struct ceph_fs_client *fsc = ceph_inode_to_client(d_inode(dentry)); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 48 | struct ceph_monmap *monmap = fsc->client->monc.monmap; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 49 | struct ceph_statfs st; |
| 50 | u64 fsid; |
| 51 | int err; |
| 52 | |
| 53 | dout("statfs\n"); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 54 | err = ceph_monc_do_statfs(&fsc->client->monc, &st); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 55 | if (err < 0) |
| 56 | return err; |
| 57 | |
| 58 | /* fill in kstatfs */ |
| 59 | buf->f_type = CEPH_SUPER_MAGIC; /* ?? */ |
| 60 | |
| 61 | /* |
| 62 | * express utilization in terms of large blocks to avoid |
| 63 | * overflow on 32-bit machines. |
Sage Weil | 92a49fb | 2013-02-22 15:31:00 -0800 | [diff] [blame] | 64 | * |
| 65 | * NOTE: for the time being, we make bsize == frsize to humor |
| 66 | * not-yet-ancient versions of glibc that are broken. |
| 67 | * Someday, we will probably want to report a real block |
| 68 | * size... whatever that may mean for a network file system! |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 69 | */ |
| 70 | buf->f_bsize = 1 << CEPH_BLOCK_SHIFT; |
Sage Weil | 92a49fb | 2013-02-22 15:31:00 -0800 | [diff] [blame] | 71 | buf->f_frsize = 1 << CEPH_BLOCK_SHIFT; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 72 | buf->f_blocks = le64_to_cpu(st.kb) >> (CEPH_BLOCK_SHIFT-10); |
Greg Farnum | 8f04d42 | 2011-07-26 11:26:54 -0700 | [diff] [blame] | 73 | buf->f_bfree = le64_to_cpu(st.kb_avail) >> (CEPH_BLOCK_SHIFT-10); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 74 | buf->f_bavail = le64_to_cpu(st.kb_avail) >> (CEPH_BLOCK_SHIFT-10); |
| 75 | |
| 76 | buf->f_files = le64_to_cpu(st.num_objects); |
| 77 | buf->f_ffree = -1; |
Sage Weil | 558d349 | 2010-06-01 12:51:12 -0700 | [diff] [blame] | 78 | buf->f_namelen = NAME_MAX; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 79 | |
| 80 | /* leave fsid little-endian, regardless of host endianness */ |
| 81 | fsid = *(u64 *)(&monmap->fsid) ^ *((u64 *)&monmap->fsid + 1); |
| 82 | buf->f_fsid.val[0] = fsid & 0xffffffff; |
| 83 | buf->f_fsid.val[1] = fsid >> 32; |
| 84 | |
| 85 | return 0; |
| 86 | } |
| 87 | |
| 88 | |
Sage Weil | 2d9c98a | 2010-07-30 09:38:13 -0700 | [diff] [blame] | 89 | static int ceph_sync_fs(struct super_block *sb, int wait) |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 90 | { |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 91 | struct ceph_fs_client *fsc = ceph_sb_to_client(sb); |
Sage Weil | 2d9c98a | 2010-07-30 09:38:13 -0700 | [diff] [blame] | 92 | |
| 93 | if (!wait) { |
| 94 | dout("sync_fs (non-blocking)\n"); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 95 | ceph_flush_dirty_caps(fsc->mdsc); |
Sage Weil | 2d9c98a | 2010-07-30 09:38:13 -0700 | [diff] [blame] | 96 | dout("sync_fs (non-blocking) done\n"); |
| 97 | return 0; |
| 98 | } |
| 99 | |
| 100 | dout("sync_fs (blocking)\n"); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 101 | ceph_osdc_sync(&fsc->client->osdc); |
| 102 | ceph_mdsc_sync(fsc->mdsc); |
Sage Weil | 2d9c98a | 2010-07-30 09:38:13 -0700 | [diff] [blame] | 103 | dout("sync_fs (blocking) done\n"); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 104 | return 0; |
| 105 | } |
| 106 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 107 | /* |
| 108 | * mount options |
| 109 | */ |
| 110 | enum { |
| 111 | Opt_wsize, |
| 112 | Opt_rsize, |
Sage Weil | 83817e3 | 2011-08-04 08:03:44 -0700 | [diff] [blame] | 113 | Opt_rasize, |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 114 | Opt_caps_wanted_delay_min, |
| 115 | Opt_caps_wanted_delay_max, |
| 116 | Opt_cap_release_safety, |
| 117 | Opt_readdir_max_entries, |
| 118 | Opt_readdir_max_bytes, |
| 119 | Opt_congestion_kb, |
| 120 | Opt_last_int, |
| 121 | /* int args above */ |
| 122 | Opt_snapdirname, |
| 123 | Opt_last_string, |
| 124 | /* string args above */ |
| 125 | Opt_dirstat, |
| 126 | Opt_nodirstat, |
| 127 | Opt_rbytes, |
| 128 | Opt_norbytes, |
Alex Elder | cffaba1 | 2012-02-15 07:43:54 -0600 | [diff] [blame] | 129 | Opt_asyncreaddir, |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 130 | Opt_noasyncreaddir, |
Sage Weil | a40dc6c | 2012-01-10 09:12:55 -0800 | [diff] [blame] | 131 | Opt_dcache, |
| 132 | Opt_nodcache, |
Yehuda Sadeh | ad1fee9 | 2011-01-21 16:44:03 -0800 | [diff] [blame] | 133 | Opt_ino32, |
Alex Elder | cffaba1 | 2012-02-15 07:43:54 -0600 | [diff] [blame] | 134 | Opt_noino32, |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 135 | Opt_fscache, |
Sage Weil | 45195e4 | 2014-02-16 10:05:29 -0800 | [diff] [blame] | 136 | Opt_nofscache, |
Yan, Zheng | 10183a6 | 2015-04-27 15:33:28 +0800 | [diff] [blame] | 137 | Opt_poolperm, |
| 138 | Opt_nopoolperm, |
Sage Weil | 45195e4 | 2014-02-16 10:05:29 -0800 | [diff] [blame] | 139 | #ifdef CONFIG_CEPH_FS_POSIX_ACL |
| 140 | Opt_acl, |
| 141 | #endif |
Yan, Zheng | 10183a6 | 2015-04-27 15:33:28 +0800 | [diff] [blame] | 142 | Opt_noacl, |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 143 | }; |
| 144 | |
| 145 | static match_table_t fsopt_tokens = { |
| 146 | {Opt_wsize, "wsize=%d"}, |
| 147 | {Opt_rsize, "rsize=%d"}, |
Sage Weil | 83817e3 | 2011-08-04 08:03:44 -0700 | [diff] [blame] | 148 | {Opt_rasize, "rasize=%d"}, |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 149 | {Opt_caps_wanted_delay_min, "caps_wanted_delay_min=%d"}, |
| 150 | {Opt_caps_wanted_delay_max, "caps_wanted_delay_max=%d"}, |
| 151 | {Opt_cap_release_safety, "cap_release_safety=%d"}, |
| 152 | {Opt_readdir_max_entries, "readdir_max_entries=%d"}, |
| 153 | {Opt_readdir_max_bytes, "readdir_max_bytes=%d"}, |
| 154 | {Opt_congestion_kb, "write_congestion_kb=%d"}, |
| 155 | /* int args above */ |
| 156 | {Opt_snapdirname, "snapdirname=%s"}, |
| 157 | /* string args above */ |
| 158 | {Opt_dirstat, "dirstat"}, |
| 159 | {Opt_nodirstat, "nodirstat"}, |
| 160 | {Opt_rbytes, "rbytes"}, |
| 161 | {Opt_norbytes, "norbytes"}, |
Alex Elder | cffaba1 | 2012-02-15 07:43:54 -0600 | [diff] [blame] | 162 | {Opt_asyncreaddir, "asyncreaddir"}, |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 163 | {Opt_noasyncreaddir, "noasyncreaddir"}, |
Sage Weil | a40dc6c | 2012-01-10 09:12:55 -0800 | [diff] [blame] | 164 | {Opt_dcache, "dcache"}, |
| 165 | {Opt_nodcache, "nodcache"}, |
Yehuda Sadeh | ad1fee9 | 2011-01-21 16:44:03 -0800 | [diff] [blame] | 166 | {Opt_ino32, "ino32"}, |
Alex Elder | cffaba1 | 2012-02-15 07:43:54 -0600 | [diff] [blame] | 167 | {Opt_noino32, "noino32"}, |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 168 | {Opt_fscache, "fsc"}, |
| 169 | {Opt_nofscache, "nofsc"}, |
Yan, Zheng | 10183a6 | 2015-04-27 15:33:28 +0800 | [diff] [blame] | 170 | {Opt_poolperm, "poolperm"}, |
| 171 | {Opt_nopoolperm, "nopoolperm"}, |
Sage Weil | 45195e4 | 2014-02-16 10:05:29 -0800 | [diff] [blame] | 172 | #ifdef CONFIG_CEPH_FS_POSIX_ACL |
| 173 | {Opt_acl, "acl"}, |
| 174 | #endif |
| 175 | {Opt_noacl, "noacl"}, |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 176 | {-1, NULL} |
| 177 | }; |
| 178 | |
| 179 | static int parse_fsopt_token(char *c, void *private) |
Yehuda Sadeh | 2baba25 | 2009-12-18 13:51:57 -0800 | [diff] [blame] | 180 | { |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 181 | struct ceph_mount_options *fsopt = private; |
| 182 | substring_t argstr[MAX_OPT_ARGS]; |
| 183 | int token, intval, ret; |
Yehuda Sadeh | 2baba25 | 2009-12-18 13:51:57 -0800 | [diff] [blame] | 184 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 185 | token = match_token((char *)c, fsopt_tokens, argstr); |
| 186 | if (token < 0) |
| 187 | return -EINVAL; |
Yehuda Sadeh | 2baba25 | 2009-12-18 13:51:57 -0800 | [diff] [blame] | 188 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 189 | if (token < Opt_last_int) { |
| 190 | ret = match_int(&argstr[0], &intval); |
| 191 | if (ret < 0) { |
| 192 | pr_err("bad mount option arg (not int) " |
| 193 | "at '%s'\n", c); |
| 194 | return ret; |
| 195 | } |
| 196 | dout("got int token %d val %d\n", token, intval); |
| 197 | } else if (token > Opt_last_int && token < Opt_last_string) { |
| 198 | dout("got string token %d val %s\n", token, |
| 199 | argstr[0].from); |
| 200 | } else { |
| 201 | dout("got token %d\n", token); |
| 202 | } |
| 203 | |
| 204 | switch (token) { |
| 205 | case Opt_snapdirname: |
| 206 | kfree(fsopt->snapdir_name); |
| 207 | fsopt->snapdir_name = kstrndup(argstr[0].from, |
| 208 | argstr[0].to-argstr[0].from, |
| 209 | GFP_KERNEL); |
| 210 | if (!fsopt->snapdir_name) |
| 211 | return -ENOMEM; |
| 212 | break; |
| 213 | |
| 214 | /* misc */ |
| 215 | case Opt_wsize: |
| 216 | fsopt->wsize = intval; |
| 217 | break; |
| 218 | case Opt_rsize: |
| 219 | fsopt->rsize = intval; |
| 220 | break; |
Sage Weil | 83817e3 | 2011-08-04 08:03:44 -0700 | [diff] [blame] | 221 | case Opt_rasize: |
| 222 | fsopt->rasize = intval; |
| 223 | break; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 224 | case Opt_caps_wanted_delay_min: |
| 225 | fsopt->caps_wanted_delay_min = intval; |
| 226 | break; |
| 227 | case Opt_caps_wanted_delay_max: |
| 228 | fsopt->caps_wanted_delay_max = intval; |
| 229 | break; |
| 230 | case Opt_readdir_max_entries: |
| 231 | fsopt->max_readdir = intval; |
| 232 | break; |
| 233 | case Opt_readdir_max_bytes: |
| 234 | fsopt->max_readdir_bytes = intval; |
| 235 | break; |
| 236 | case Opt_congestion_kb: |
| 237 | fsopt->congestion_kb = intval; |
| 238 | break; |
| 239 | case Opt_dirstat: |
| 240 | fsopt->flags |= CEPH_MOUNT_OPT_DIRSTAT; |
| 241 | break; |
| 242 | case Opt_nodirstat: |
| 243 | fsopt->flags &= ~CEPH_MOUNT_OPT_DIRSTAT; |
| 244 | break; |
| 245 | case Opt_rbytes: |
| 246 | fsopt->flags |= CEPH_MOUNT_OPT_RBYTES; |
| 247 | break; |
| 248 | case Opt_norbytes: |
| 249 | fsopt->flags &= ~CEPH_MOUNT_OPT_RBYTES; |
| 250 | break; |
Alex Elder | cffaba1 | 2012-02-15 07:43:54 -0600 | [diff] [blame] | 251 | case Opt_asyncreaddir: |
| 252 | fsopt->flags &= ~CEPH_MOUNT_OPT_NOASYNCREADDIR; |
| 253 | break; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 254 | case Opt_noasyncreaddir: |
| 255 | fsopt->flags |= CEPH_MOUNT_OPT_NOASYNCREADDIR; |
| 256 | break; |
Sage Weil | a40dc6c | 2012-01-10 09:12:55 -0800 | [diff] [blame] | 257 | case Opt_dcache: |
| 258 | fsopt->flags |= CEPH_MOUNT_OPT_DCACHE; |
| 259 | break; |
| 260 | case Opt_nodcache: |
| 261 | fsopt->flags &= ~CEPH_MOUNT_OPT_DCACHE; |
| 262 | break; |
Yehuda Sadeh | ad1fee9 | 2011-01-21 16:44:03 -0800 | [diff] [blame] | 263 | case Opt_ino32: |
| 264 | fsopt->flags |= CEPH_MOUNT_OPT_INO32; |
| 265 | break; |
Alex Elder | cffaba1 | 2012-02-15 07:43:54 -0600 | [diff] [blame] | 266 | case Opt_noino32: |
| 267 | fsopt->flags &= ~CEPH_MOUNT_OPT_INO32; |
| 268 | break; |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 269 | case Opt_fscache: |
| 270 | fsopt->flags |= CEPH_MOUNT_OPT_FSCACHE; |
| 271 | break; |
| 272 | case Opt_nofscache: |
| 273 | fsopt->flags &= ~CEPH_MOUNT_OPT_FSCACHE; |
| 274 | break; |
Yan, Zheng | 10183a6 | 2015-04-27 15:33:28 +0800 | [diff] [blame] | 275 | case Opt_poolperm: |
| 276 | fsopt->flags &= ~CEPH_MOUNT_OPT_NOPOOLPERM; |
| 277 | printk ("pool perm"); |
| 278 | break; |
| 279 | case Opt_nopoolperm: |
| 280 | fsopt->flags |= CEPH_MOUNT_OPT_NOPOOLPERM; |
| 281 | break; |
Sage Weil | 45195e4 | 2014-02-16 10:05:29 -0800 | [diff] [blame] | 282 | #ifdef CONFIG_CEPH_FS_POSIX_ACL |
| 283 | case Opt_acl: |
| 284 | fsopt->sb_flags |= MS_POSIXACL; |
| 285 | break; |
| 286 | #endif |
| 287 | case Opt_noacl: |
| 288 | fsopt->sb_flags &= ~MS_POSIXACL; |
| 289 | break; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 290 | default: |
| 291 | BUG_ON(token); |
| 292 | } |
| 293 | return 0; |
| 294 | } |
| 295 | |
| 296 | static void destroy_mount_options(struct ceph_mount_options *args) |
| 297 | { |
| 298 | dout("destroy_mount_options %p\n", args); |
| 299 | kfree(args->snapdir_name); |
| 300 | kfree(args); |
| 301 | } |
| 302 | |
| 303 | static int strcmp_null(const char *s1, const char *s2) |
| 304 | { |
| 305 | if (!s1 && !s2) |
| 306 | return 0; |
| 307 | if (s1 && !s2) |
| 308 | return -1; |
| 309 | if (!s1 && s2) |
| 310 | return 1; |
| 311 | return strcmp(s1, s2); |
| 312 | } |
| 313 | |
| 314 | static int compare_mount_options(struct ceph_mount_options *new_fsopt, |
| 315 | struct ceph_options *new_opt, |
| 316 | struct ceph_fs_client *fsc) |
| 317 | { |
| 318 | struct ceph_mount_options *fsopt1 = new_fsopt; |
| 319 | struct ceph_mount_options *fsopt2 = fsc->mount_options; |
| 320 | int ofs = offsetof(struct ceph_mount_options, snapdir_name); |
| 321 | int ret; |
| 322 | |
| 323 | ret = memcmp(fsopt1, fsopt2, ofs); |
| 324 | if (ret) |
| 325 | return ret; |
| 326 | |
| 327 | ret = strcmp_null(fsopt1->snapdir_name, fsopt2->snapdir_name); |
| 328 | if (ret) |
| 329 | return ret; |
| 330 | |
| 331 | return ceph_compare_options(new_opt, fsc->client); |
| 332 | } |
| 333 | |
| 334 | static int parse_mount_options(struct ceph_mount_options **pfsopt, |
| 335 | struct ceph_options **popt, |
| 336 | int flags, char *options, |
| 337 | const char *dev_name, |
| 338 | const char **path) |
| 339 | { |
| 340 | struct ceph_mount_options *fsopt; |
| 341 | const char *dev_name_end; |
Alex Elder | c98f533 | 2012-08-09 10:33:26 -0700 | [diff] [blame] | 342 | int err; |
| 343 | |
| 344 | if (!dev_name || !*dev_name) |
| 345 | return -EINVAL; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 346 | |
| 347 | fsopt = kzalloc(sizeof(*fsopt), GFP_KERNEL); |
| 348 | if (!fsopt) |
| 349 | return -ENOMEM; |
| 350 | |
| 351 | dout("parse_mount_options %p, dev_name '%s'\n", fsopt, dev_name); |
| 352 | |
Noah Watkins | 80db8be | 2011-08-22 13:49:23 -0600 | [diff] [blame] | 353 | fsopt->sb_flags = flags; |
| 354 | fsopt->flags = CEPH_MOUNT_OPT_DEFAULT; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 355 | |
Noah Watkins | 80db8be | 2011-08-22 13:49:23 -0600 | [diff] [blame] | 356 | fsopt->rsize = CEPH_RSIZE_DEFAULT; |
| 357 | fsopt->rasize = CEPH_RASIZE_DEFAULT; |
| 358 | fsopt->snapdir_name = kstrdup(CEPH_SNAPDIRNAME_DEFAULT, GFP_KERNEL); |
Sanidhya Kashyap | a149bb9 | 2015-03-21 12:54:58 -0400 | [diff] [blame] | 359 | if (!fsopt->snapdir_name) { |
| 360 | err = -ENOMEM; |
| 361 | goto out; |
| 362 | } |
| 363 | |
Sage Weil | 50aac4f | 2011-01-18 07:59:40 -0800 | [diff] [blame] | 364 | fsopt->caps_wanted_delay_min = CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT; |
| 365 | fsopt->caps_wanted_delay_max = CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT; |
Noah Watkins | 80db8be | 2011-08-22 13:49:23 -0600 | [diff] [blame] | 366 | fsopt->cap_release_safety = CEPH_CAP_RELEASE_SAFETY_DEFAULT; |
| 367 | fsopt->max_readdir = CEPH_MAX_READDIR_DEFAULT; |
| 368 | fsopt->max_readdir_bytes = CEPH_MAX_READDIR_BYTES_DEFAULT; |
| 369 | fsopt->congestion_kb = default_congestion_kb(); |
| 370 | |
Alex Elder | c98f533 | 2012-08-09 10:33:26 -0700 | [diff] [blame] | 371 | /* |
| 372 | * Distinguish the server list from the path in "dev_name". |
| 373 | * Internally we do not include the leading '/' in the path. |
| 374 | * |
| 375 | * "dev_name" will look like: |
| 376 | * <server_spec>[,<server_spec>...]:[<path>] |
| 377 | * where |
| 378 | * <server_spec> is <ip>[:<port>] |
| 379 | * <path> is optional, but if present must begin with '/' |
| 380 | */ |
| 381 | dev_name_end = strchr(dev_name, '/'); |
| 382 | if (dev_name_end) { |
| 383 | /* skip over leading '/' for path */ |
| 384 | *path = dev_name_end + 1; |
| 385 | } else { |
| 386 | /* path is empty */ |
| 387 | dev_name_end = dev_name + strlen(dev_name); |
| 388 | *path = dev_name_end; |
| 389 | } |
Noah Watkins | 80db8be | 2011-08-22 13:49:23 -0600 | [diff] [blame] | 390 | err = -EINVAL; |
Alex Elder | c98f533 | 2012-08-09 10:33:26 -0700 | [diff] [blame] | 391 | dev_name_end--; /* back up to ':' separator */ |
Sasha Levin | 5446429 | 2013-07-01 18:33:39 -0400 | [diff] [blame] | 392 | if (dev_name_end < dev_name || *dev_name_end != ':') { |
Alex Elder | c98f533 | 2012-08-09 10:33:26 -0700 | [diff] [blame] | 393 | pr_err("device name is missing path (no : separator in %s)\n", |
Noah Watkins | 80db8be | 2011-08-22 13:49:23 -0600 | [diff] [blame] | 394 | dev_name); |
| 395 | goto out; |
| 396 | } |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 397 | dout("device name '%.*s'\n", (int)(dev_name_end - dev_name), dev_name); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 398 | dout("server path '%s'\n", *path); |
| 399 | |
Alex Elder | ee57741 | 2012-01-24 10:08:36 -0600 | [diff] [blame] | 400 | *popt = ceph_parse_options(options, dev_name, dev_name_end, |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 401 | parse_fsopt_token, (void *)fsopt); |
Alex Elder | ee57741 | 2012-01-24 10:08:36 -0600 | [diff] [blame] | 402 | if (IS_ERR(*popt)) { |
| 403 | err = PTR_ERR(*popt); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 404 | goto out; |
Alex Elder | ee57741 | 2012-01-24 10:08:36 -0600 | [diff] [blame] | 405 | } |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 406 | |
| 407 | /* success */ |
| 408 | *pfsopt = fsopt; |
| 409 | return 0; |
| 410 | |
| 411 | out: |
| 412 | destroy_mount_options(fsopt); |
| 413 | return err; |
Yehuda Sadeh | 2baba25 | 2009-12-18 13:51:57 -0800 | [diff] [blame] | 414 | } |
| 415 | |
Sage Weil | 6e19a16 | 2010-04-29 16:38:32 -0700 | [diff] [blame] | 416 | /** |
| 417 | * ceph_show_options - Show mount options in /proc/mounts |
| 418 | * @m: seq_file to write to |
Al Viro | 34c80b1 | 2011-12-08 21:32:45 -0500 | [diff] [blame] | 419 | * @root: root of that (sub)tree |
Sage Weil | 6e19a16 | 2010-04-29 16:38:32 -0700 | [diff] [blame] | 420 | */ |
Al Viro | 34c80b1 | 2011-12-08 21:32:45 -0500 | [diff] [blame] | 421 | static int ceph_show_options(struct seq_file *m, struct dentry *root) |
Sage Weil | 6e19a16 | 2010-04-29 16:38:32 -0700 | [diff] [blame] | 422 | { |
Al Viro | 34c80b1 | 2011-12-08 21:32:45 -0500 | [diff] [blame] | 423 | struct ceph_fs_client *fsc = ceph_sb_to_client(root->d_sb); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 424 | struct ceph_mount_options *fsopt = fsc->mount_options; |
Ilya Dryomov | ff40f9a | 2015-03-25 21:02:16 +0300 | [diff] [blame] | 425 | size_t pos; |
| 426 | int ret; |
Sage Weil | 6e19a16 | 2010-04-29 16:38:32 -0700 | [diff] [blame] | 427 | |
Ilya Dryomov | ff40f9a | 2015-03-25 21:02:16 +0300 | [diff] [blame] | 428 | /* a comma between MNT/MS and client options */ |
| 429 | seq_putc(m, ','); |
| 430 | pos = m->count; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 431 | |
Ilya Dryomov | ff40f9a | 2015-03-25 21:02:16 +0300 | [diff] [blame] | 432 | ret = ceph_print_client_options(m, fsc->client); |
| 433 | if (ret) |
| 434 | return ret; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 435 | |
Ilya Dryomov | ff40f9a | 2015-03-25 21:02:16 +0300 | [diff] [blame] | 436 | /* retract our comma if no client options */ |
| 437 | if (m->count == pos) |
| 438 | m->count--; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 439 | |
| 440 | if (fsopt->flags & CEPH_MOUNT_OPT_DIRSTAT) |
| 441 | seq_puts(m, ",dirstat"); |
| 442 | if ((fsopt->flags & CEPH_MOUNT_OPT_RBYTES) == 0) |
| 443 | seq_puts(m, ",norbytes"); |
| 444 | if (fsopt->flags & CEPH_MOUNT_OPT_NOASYNCREADDIR) |
Sage Weil | 6e19a16 | 2010-04-29 16:38:32 -0700 | [diff] [blame] | 445 | seq_puts(m, ",noasyncreaddir"); |
Ilya Dryomov | ff7eeb8 | 2015-03-25 21:10:09 +0300 | [diff] [blame] | 446 | if ((fsopt->flags & CEPH_MOUNT_OPT_DCACHE) == 0) |
Sage Weil | a40dc6c | 2012-01-10 09:12:55 -0800 | [diff] [blame] | 447 | seq_puts(m, ",nodcache"); |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 448 | if (fsopt->flags & CEPH_MOUNT_OPT_FSCACHE) |
| 449 | seq_puts(m, ",fsc"); |
Yan, Zheng | 10183a6 | 2015-04-27 15:33:28 +0800 | [diff] [blame] | 450 | if (fsopt->flags & CEPH_MOUNT_OPT_NOPOOLPERM) |
| 451 | seq_puts(m, ",nopoolperm"); |
Sage Weil | 6e19a16 | 2010-04-29 16:38:32 -0700 | [diff] [blame] | 452 | |
Sage Weil | 45195e4 | 2014-02-16 10:05:29 -0800 | [diff] [blame] | 453 | #ifdef CONFIG_CEPH_FS_POSIX_ACL |
| 454 | if (fsopt->sb_flags & MS_POSIXACL) |
| 455 | seq_puts(m, ",acl"); |
| 456 | else |
| 457 | seq_puts(m, ",noacl"); |
| 458 | #endif |
| 459 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 460 | if (fsopt->wsize) |
| 461 | seq_printf(m, ",wsize=%d", fsopt->wsize); |
Sage Weil | 80456f8 | 2011-03-10 13:33:26 -0800 | [diff] [blame] | 462 | if (fsopt->rsize != CEPH_RSIZE_DEFAULT) |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 463 | seq_printf(m, ",rsize=%d", fsopt->rsize); |
Sage Weil | 83817e3 | 2011-08-04 08:03:44 -0700 | [diff] [blame] | 464 | if (fsopt->rasize != CEPH_RASIZE_DEFAULT) |
Sage Weil | 2151937 | 2011-12-01 08:06:52 -0800 | [diff] [blame] | 465 | seq_printf(m, ",rasize=%d", fsopt->rasize); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 466 | if (fsopt->congestion_kb != default_congestion_kb()) |
| 467 | seq_printf(m, ",write_congestion_kb=%d", fsopt->congestion_kb); |
| 468 | if (fsopt->caps_wanted_delay_min != CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT) |
Sage Weil | 6e19a16 | 2010-04-29 16:38:32 -0700 | [diff] [blame] | 469 | seq_printf(m, ",caps_wanted_delay_min=%d", |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 470 | fsopt->caps_wanted_delay_min); |
| 471 | if (fsopt->caps_wanted_delay_max != CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT) |
Sage Weil | 6e19a16 | 2010-04-29 16:38:32 -0700 | [diff] [blame] | 472 | seq_printf(m, ",caps_wanted_delay_max=%d", |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 473 | fsopt->caps_wanted_delay_max); |
| 474 | if (fsopt->cap_release_safety != CEPH_CAP_RELEASE_SAFETY_DEFAULT) |
Sage Weil | 6e19a16 | 2010-04-29 16:38:32 -0700 | [diff] [blame] | 475 | seq_printf(m, ",cap_release_safety=%d", |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 476 | fsopt->cap_release_safety); |
| 477 | if (fsopt->max_readdir != CEPH_MAX_READDIR_DEFAULT) |
| 478 | seq_printf(m, ",readdir_max_entries=%d", fsopt->max_readdir); |
| 479 | if (fsopt->max_readdir_bytes != CEPH_MAX_READDIR_BYTES_DEFAULT) |
| 480 | seq_printf(m, ",readdir_max_bytes=%d", fsopt->max_readdir_bytes); |
| 481 | if (strcmp(fsopt->snapdir_name, CEPH_SNAPDIRNAME_DEFAULT)) |
| 482 | seq_printf(m, ",snapdirname=%s", fsopt->snapdir_name); |
Ilya Dryomov | ff40f9a | 2015-03-25 21:02:16 +0300 | [diff] [blame] | 483 | |
Sage Weil | 6e19a16 | 2010-04-29 16:38:32 -0700 | [diff] [blame] | 484 | return 0; |
| 485 | } |
| 486 | |
| 487 | /* |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 488 | * handle any mon messages the standard library doesn't understand. |
| 489 | * return error if we don't either. |
| 490 | */ |
| 491 | static int extra_mon_dispatch(struct ceph_client *client, struct ceph_msg *msg) |
| 492 | { |
| 493 | struct ceph_fs_client *fsc = client->private; |
| 494 | int type = le16_to_cpu(msg->hdr.type); |
| 495 | |
| 496 | switch (type) { |
| 497 | case CEPH_MSG_MDS_MAP: |
| 498 | ceph_mdsc_handle_map(fsc->mdsc, msg); |
| 499 | return 0; |
| 500 | |
| 501 | default: |
| 502 | return -1; |
| 503 | } |
| 504 | } |
| 505 | |
| 506 | /* |
| 507 | * create a new fs client |
| 508 | */ |
H Hartley Sweeten | 0c6d4b4e2 | 2011-09-23 11:53:30 -0700 | [diff] [blame] | 509 | static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt, |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 510 | struct ceph_options *opt) |
| 511 | { |
| 512 | struct ceph_fs_client *fsc; |
Ilya Dryomov | 12b4629 | 2013-12-24 21:19:23 +0200 | [diff] [blame] | 513 | const u64 supported_features = |
Sage Weil | 6ab00d4 | 2011-08-09 09:41:59 -0700 | [diff] [blame] | 514 | CEPH_FEATURE_FLOCK | |
Yan, Zheng | 65a2266 | 2014-11-17 10:01:03 +0800 | [diff] [blame] | 515 | CEPH_FEATURE_DIRLAYOUTHASH | |
| 516 | CEPH_FEATURE_MDS_INLINE_DATA; |
Ilya Dryomov | 12b4629 | 2013-12-24 21:19:23 +0200 | [diff] [blame] | 517 | const u64 required_features = 0; |
Alex Elder | 3bf5333 | 2013-04-01 10:48:40 -0500 | [diff] [blame] | 518 | int page_count; |
| 519 | size_t size; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 520 | int err = -ENOMEM; |
| 521 | |
| 522 | fsc = kzalloc(sizeof(*fsc), GFP_KERNEL); |
| 523 | if (!fsc) |
| 524 | return ERR_PTR(-ENOMEM); |
| 525 | |
Sage Weil | 6ab00d4 | 2011-08-09 09:41:59 -0700 | [diff] [blame] | 526 | fsc->client = ceph_create_client(opt, fsc, supported_features, |
| 527 | required_features); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 528 | if (IS_ERR(fsc->client)) { |
| 529 | err = PTR_ERR(fsc->client); |
| 530 | goto fail; |
| 531 | } |
| 532 | fsc->client->extra_mon_dispatch = extra_mon_dispatch; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 533 | fsc->client->monc.want_mdsmap = 1; |
| 534 | |
| 535 | fsc->mount_options = fsopt; |
| 536 | |
| 537 | fsc->sb = NULL; |
| 538 | fsc->mount_state = CEPH_MOUNT_MOUNTING; |
| 539 | |
| 540 | atomic_long_set(&fsc->writeback_count, 0); |
| 541 | |
| 542 | err = bdi_init(&fsc->backing_dev_info); |
| 543 | if (err < 0) |
| 544 | goto fail_client; |
| 545 | |
| 546 | err = -ENOMEM; |
Tejun Heo | 01e6acc | 2011-01-03 14:49:45 +0100 | [diff] [blame] | 547 | /* |
| 548 | * The number of concurrent works can be high but they don't need |
| 549 | * to be processed in parallel, limit concurrency. |
| 550 | */ |
| 551 | fsc->wb_wq = alloc_workqueue("ceph-writeback", 0, 1); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 552 | if (fsc->wb_wq == NULL) |
| 553 | goto fail_bdi; |
Tejun Heo | 01e6acc | 2011-01-03 14:49:45 +0100 | [diff] [blame] | 554 | fsc->pg_inv_wq = alloc_workqueue("ceph-pg-invalid", 0, 1); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 555 | if (fsc->pg_inv_wq == NULL) |
| 556 | goto fail_wb_wq; |
Tejun Heo | 01e6acc | 2011-01-03 14:49:45 +0100 | [diff] [blame] | 557 | fsc->trunc_wq = alloc_workqueue("ceph-trunc", 0, 1); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 558 | if (fsc->trunc_wq == NULL) |
| 559 | goto fail_pg_inv_wq; |
| 560 | |
| 561 | /* set up mempools */ |
| 562 | err = -ENOMEM; |
Alex Elder | 3bf5333 | 2013-04-01 10:48:40 -0500 | [diff] [blame] | 563 | page_count = fsc->mount_options->wsize >> PAGE_CACHE_SHIFT; |
| 564 | size = sizeof (struct page *) * (page_count ? page_count : 1); |
| 565 | fsc->wb_pagevec_pool = mempool_create_kmalloc_pool(10, size); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 566 | if (!fsc->wb_pagevec_pool) |
| 567 | goto fail_trunc_wq; |
| 568 | |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 569 | /* setup fscache */ |
| 570 | if ((fsopt->flags & CEPH_MOUNT_OPT_FSCACHE) && |
| 571 | (ceph_fscache_register_fs(fsc) != 0)) |
| 572 | goto fail_fscache; |
| 573 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 574 | /* caps */ |
| 575 | fsc->min_caps = fsopt->max_readdir; |
| 576 | |
| 577 | return fsc; |
| 578 | |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 579 | fail_fscache: |
| 580 | ceph_fscache_unregister_fs(fsc); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 581 | fail_trunc_wq: |
| 582 | destroy_workqueue(fsc->trunc_wq); |
| 583 | fail_pg_inv_wq: |
| 584 | destroy_workqueue(fsc->pg_inv_wq); |
| 585 | fail_wb_wq: |
| 586 | destroy_workqueue(fsc->wb_wq); |
| 587 | fail_bdi: |
| 588 | bdi_destroy(&fsc->backing_dev_info); |
| 589 | fail_client: |
| 590 | ceph_destroy_client(fsc->client); |
| 591 | fail: |
| 592 | kfree(fsc); |
| 593 | return ERR_PTR(err); |
| 594 | } |
| 595 | |
H Hartley Sweeten | 0c6d4b4e2 | 2011-09-23 11:53:30 -0700 | [diff] [blame] | 596 | static void destroy_fs_client(struct ceph_fs_client *fsc) |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 597 | { |
| 598 | dout("destroy_fs_client %p\n", fsc); |
| 599 | |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 600 | ceph_fscache_unregister_fs(fsc); |
| 601 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 602 | destroy_workqueue(fsc->wb_wq); |
| 603 | destroy_workqueue(fsc->pg_inv_wq); |
| 604 | destroy_workqueue(fsc->trunc_wq); |
| 605 | |
| 606 | bdi_destroy(&fsc->backing_dev_info); |
| 607 | |
| 608 | mempool_destroy(fsc->wb_pagevec_pool); |
| 609 | |
| 610 | destroy_mount_options(fsc->mount_options); |
| 611 | |
| 612 | ceph_fs_debugfs_cleanup(fsc); |
| 613 | |
| 614 | ceph_destroy_client(fsc->client); |
| 615 | |
| 616 | kfree(fsc); |
| 617 | dout("destroy_fs_client %p done\n", fsc); |
| 618 | } |
| 619 | |
| 620 | /* |
Sage Weil | 6e19a16 | 2010-04-29 16:38:32 -0700 | [diff] [blame] | 621 | * caches |
| 622 | */ |
| 623 | struct kmem_cache *ceph_inode_cachep; |
| 624 | struct kmem_cache *ceph_cap_cachep; |
Yan, Zheng | f66fd9f | 2015-06-10 17:26:13 +0800 | [diff] [blame] | 625 | struct kmem_cache *ceph_cap_flush_cachep; |
Sage Weil | 6e19a16 | 2010-04-29 16:38:32 -0700 | [diff] [blame] | 626 | struct kmem_cache *ceph_dentry_cachep; |
| 627 | struct kmem_cache *ceph_file_cachep; |
| 628 | |
| 629 | static void ceph_inode_init_once(void *foo) |
| 630 | { |
| 631 | struct ceph_inode_info *ci = foo; |
| 632 | inode_init_once(&ci->vfs_inode); |
| 633 | } |
| 634 | |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 635 | static int __init init_caches(void) |
| 636 | { |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 637 | int error = -ENOMEM; |
| 638 | |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 639 | ceph_inode_cachep = kmem_cache_create("ceph_inode_info", |
| 640 | sizeof(struct ceph_inode_info), |
| 641 | __alignof__(struct ceph_inode_info), |
| 642 | (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD), |
| 643 | ceph_inode_init_once); |
| 644 | if (ceph_inode_cachep == NULL) |
| 645 | return -ENOMEM; |
| 646 | |
| 647 | ceph_cap_cachep = KMEM_CACHE(ceph_cap, |
| 648 | SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD); |
| 649 | if (ceph_cap_cachep == NULL) |
| 650 | goto bad_cap; |
Yan, Zheng | f66fd9f | 2015-06-10 17:26:13 +0800 | [diff] [blame] | 651 | ceph_cap_flush_cachep = KMEM_CACHE(ceph_cap_flush, |
| 652 | SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD); |
| 653 | if (ceph_cap_flush_cachep == NULL) |
| 654 | goto bad_cap_flush; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 655 | |
| 656 | ceph_dentry_cachep = KMEM_CACHE(ceph_dentry_info, |
| 657 | SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD); |
| 658 | if (ceph_dentry_cachep == NULL) |
| 659 | goto bad_dentry; |
| 660 | |
| 661 | ceph_file_cachep = KMEM_CACHE(ceph_file_info, |
| 662 | SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD); |
| 663 | if (ceph_file_cachep == NULL) |
| 664 | goto bad_file; |
| 665 | |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 666 | if ((error = ceph_fscache_register())) |
| 667 | goto bad_file; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 668 | |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 669 | return 0; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 670 | bad_file: |
| 671 | kmem_cache_destroy(ceph_dentry_cachep); |
| 672 | bad_dentry: |
Yan, Zheng | f66fd9f | 2015-06-10 17:26:13 +0800 | [diff] [blame] | 673 | kmem_cache_destroy(ceph_cap_flush_cachep); |
| 674 | bad_cap_flush: |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 675 | kmem_cache_destroy(ceph_cap_cachep); |
| 676 | bad_cap: |
| 677 | kmem_cache_destroy(ceph_inode_cachep); |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 678 | return error; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 679 | } |
| 680 | |
| 681 | static void destroy_caches(void) |
| 682 | { |
Kirill A. Shutemov | 8c0a853 | 2012-09-26 11:33:07 +1000 | [diff] [blame] | 683 | /* |
| 684 | * Make sure all delayed rcu free inodes are flushed before we |
| 685 | * destroy cache. |
| 686 | */ |
| 687 | rcu_barrier(); |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 688 | |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 689 | kmem_cache_destroy(ceph_inode_cachep); |
| 690 | kmem_cache_destroy(ceph_cap_cachep); |
Yan, Zheng | f66fd9f | 2015-06-10 17:26:13 +0800 | [diff] [blame] | 691 | kmem_cache_destroy(ceph_cap_flush_cachep); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 692 | kmem_cache_destroy(ceph_dentry_cachep); |
| 693 | kmem_cache_destroy(ceph_file_cachep); |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 694 | |
| 695 | ceph_fscache_unregister(); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 696 | } |
| 697 | |
| 698 | |
| 699 | /* |
| 700 | * ceph_umount_begin - initiate forced umount. Tear down down the |
| 701 | * mount, skipping steps that may hang while waiting for server(s). |
| 702 | */ |
| 703 | static void ceph_umount_begin(struct super_block *sb) |
| 704 | { |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 705 | struct ceph_fs_client *fsc = ceph_sb_to_client(sb); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 706 | |
| 707 | dout("ceph_umount_begin - starting forced umount\n"); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 708 | if (!fsc) |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 709 | return; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 710 | fsc->mount_state = CEPH_MOUNT_SHUTDOWN; |
Yan, Zheng | 48fec5d | 2015-07-01 16:27:46 +0800 | [diff] [blame^] | 711 | ceph_mdsc_force_umount(fsc->mdsc); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 712 | return; |
| 713 | } |
| 714 | |
| 715 | static const struct super_operations ceph_super_ops = { |
| 716 | .alloc_inode = ceph_alloc_inode, |
| 717 | .destroy_inode = ceph_destroy_inode, |
| 718 | .write_inode = ceph_write_inode, |
Yan, Zheng | 9f12bd1 | 2013-09-20 19:55:31 +0800 | [diff] [blame] | 719 | .drop_inode = ceph_drop_inode, |
Sage Weil | 2d9c98a | 2010-07-30 09:38:13 -0700 | [diff] [blame] | 720 | .sync_fs = ceph_sync_fs, |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 721 | .put_super = ceph_put_super, |
| 722 | .show_options = ceph_show_options, |
| 723 | .statfs = ceph_statfs, |
| 724 | .umount_begin = ceph_umount_begin, |
| 725 | }; |
| 726 | |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 727 | /* |
| 728 | * Bootstrap mount by opening the root directory. Note the mount |
| 729 | * @started time from caller, and time out if this takes too long. |
| 730 | */ |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 731 | static struct dentry *open_root_dentry(struct ceph_fs_client *fsc, |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 732 | const char *path, |
| 733 | unsigned long started) |
| 734 | { |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 735 | struct ceph_mds_client *mdsc = fsc->mdsc; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 736 | struct ceph_mds_request *req = NULL; |
| 737 | int err; |
| 738 | struct dentry *root; |
| 739 | |
| 740 | /* open dir */ |
| 741 | dout("open_root_inode opening '%s'\n", path); |
| 742 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, USE_ANY_MDS); |
| 743 | if (IS_ERR(req)) |
Julia Lawall | 7e34bc5 | 2010-05-22 12:01:14 +0200 | [diff] [blame] | 744 | return ERR_CAST(req); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 745 | req->r_path1 = kstrdup(path, GFP_NOFS); |
Sanidhya Kashyap | a149bb9 | 2015-03-21 12:54:58 -0400 | [diff] [blame] | 746 | if (!req->r_path1) { |
| 747 | root = ERR_PTR(-ENOMEM); |
| 748 | goto out; |
| 749 | } |
| 750 | |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 751 | req->r_ino1.ino = CEPH_INO_ROOT; |
| 752 | req->r_ino1.snap = CEPH_NOSNAP; |
| 753 | req->r_started = started; |
Ilya Dryomov | a319bf5 | 2015-05-15 12:02:17 +0300 | [diff] [blame] | 754 | req->r_timeout = fsc->client->options->mount_timeout; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 755 | req->r_args.getattr.mask = cpu_to_le32(CEPH_STAT_CAP_INODE); |
| 756 | req->r_num_caps = 2; |
| 757 | err = ceph_mdsc_do_request(mdsc, NULL, req); |
| 758 | if (err == 0) { |
Al Viro | 3c5184e | 2012-01-09 16:34:32 -0500 | [diff] [blame] | 759 | struct inode *inode = req->r_target_inode; |
| 760 | req->r_target_inode = NULL; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 761 | dout("open_root_inode success\n"); |
Al Viro | 3c5184e | 2012-01-09 16:34:32 -0500 | [diff] [blame] | 762 | if (ceph_ino(inode) == CEPH_INO_ROOT && |
Sage Weil | 774ac21 | 2011-11-11 09:48:08 -0800 | [diff] [blame] | 763 | fsc->sb->s_root == NULL) { |
Al Viro | 48fde70 | 2012-01-08 22:15:13 -0500 | [diff] [blame] | 764 | root = d_make_root(inode); |
Al Viro | 3c5184e | 2012-01-09 16:34:32 -0500 | [diff] [blame] | 765 | if (!root) { |
Al Viro | 3c5184e | 2012-01-09 16:34:32 -0500 | [diff] [blame] | 766 | root = ERR_PTR(-ENOMEM); |
| 767 | goto out; |
| 768 | } |
Sage Weil | 774ac21 | 2011-11-11 09:48:08 -0800 | [diff] [blame] | 769 | } else { |
J. Bruce Fields | 1a0a397 | 2014-02-14 17:35:37 -0500 | [diff] [blame] | 770 | root = d_obtain_root(inode); |
Sage Weil | 774ac21 | 2011-11-11 09:48:08 -0800 | [diff] [blame] | 771 | } |
Linus Torvalds | 1a52bb0 | 2012-01-13 10:29:21 -0800 | [diff] [blame] | 772 | ceph_init_dentry(root); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 773 | dout("open_root_inode success, root dentry is %p\n", root); |
| 774 | } else { |
| 775 | root = ERR_PTR(err); |
| 776 | } |
Al Viro | 3c5184e | 2012-01-09 16:34:32 -0500 | [diff] [blame] | 777 | out: |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 778 | ceph_mdsc_put_request(req); |
| 779 | return root; |
| 780 | } |
| 781 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 782 | |
| 783 | |
| 784 | |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 785 | /* |
| 786 | * mount: join the ceph cluster, and open root directory. |
| 787 | */ |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 788 | static struct dentry *ceph_real_mount(struct ceph_fs_client *fsc, |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 789 | const char *path) |
| 790 | { |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 791 | int err; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 792 | unsigned long started = jiffies; /* note the start time */ |
| 793 | struct dentry *root; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 794 | int first = 0; /* first vfsmount for this super_block */ |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 795 | |
| 796 | dout("mount start\n"); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 797 | mutex_lock(&fsc->client->mount_mutex); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 798 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 799 | err = __ceph_open_session(fsc->client, started); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 800 | if (err < 0) |
| 801 | goto out; |
| 802 | |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 803 | dout("mount opening root\n"); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 804 | root = open_root_dentry(fsc, "", started); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 805 | if (IS_ERR(root)) { |
| 806 | err = PTR_ERR(root); |
| 807 | goto out; |
| 808 | } |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 809 | if (fsc->sb->s_root) { |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 810 | dput(root); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 811 | } else { |
| 812 | fsc->sb->s_root = root; |
| 813 | first = 1; |
| 814 | |
| 815 | err = ceph_fs_debugfs_init(fsc); |
| 816 | if (err < 0) |
| 817 | goto fail; |
| 818 | } |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 819 | |
| 820 | if (path[0] == 0) { |
| 821 | dget(root); |
| 822 | } else { |
| 823 | dout("mount opening base mountpoint\n"); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 824 | root = open_root_dentry(fsc, path, started); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 825 | if (IS_ERR(root)) { |
| 826 | err = PTR_ERR(root); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 827 | goto fail; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 828 | } |
| 829 | } |
| 830 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 831 | fsc->mount_state = CEPH_MOUNT_MOUNTED; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 832 | dout("mount success\n"); |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 833 | mutex_unlock(&fsc->client->mount_mutex); |
| 834 | return root; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 835 | |
| 836 | out: |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 837 | mutex_unlock(&fsc->client->mount_mutex); |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 838 | return ERR_PTR(err); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 839 | |
| 840 | fail: |
| 841 | if (first) { |
| 842 | dput(fsc->sb->s_root); |
| 843 | fsc->sb->s_root = NULL; |
| 844 | } |
| 845 | goto out; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 846 | } |
| 847 | |
| 848 | static int ceph_set_super(struct super_block *s, void *data) |
| 849 | { |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 850 | struct ceph_fs_client *fsc = data; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 851 | int ret; |
| 852 | |
| 853 | dout("set_super %p data %p\n", s, data); |
| 854 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 855 | s->s_flags = fsc->mount_options->sb_flags; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 856 | s->s_maxbytes = 1ULL << 40; /* temp value until we get mdsmap */ |
| 857 | |
Guangliang Zhao | 7221fe4 | 2013-11-11 15:18:03 +0800 | [diff] [blame] | 858 | s->s_xattr = ceph_xattr_handlers; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 859 | s->s_fs_info = fsc; |
| 860 | fsc->sb = s; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 861 | |
| 862 | s->s_op = &ceph_super_ops; |
| 863 | s->s_export_op = &ceph_export_ops; |
| 864 | |
| 865 | s->s_time_gran = 1000; /* 1000 ns == 1 us */ |
| 866 | |
| 867 | ret = set_anon_super(s, NULL); /* what is that second arg for? */ |
| 868 | if (ret != 0) |
| 869 | goto fail; |
| 870 | |
| 871 | return ret; |
| 872 | |
| 873 | fail: |
| 874 | s->s_fs_info = NULL; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 875 | fsc->sb = NULL; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 876 | return ret; |
| 877 | } |
| 878 | |
| 879 | /* |
| 880 | * share superblock if same fs AND options |
| 881 | */ |
| 882 | static int ceph_compare_super(struct super_block *sb, void *data) |
| 883 | { |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 884 | struct ceph_fs_client *new = data; |
| 885 | struct ceph_mount_options *fsopt = new->mount_options; |
| 886 | struct ceph_options *opt = new->client->options; |
| 887 | struct ceph_fs_client *other = ceph_sb_to_client(sb); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 888 | |
| 889 | dout("ceph_compare_super %p\n", sb); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 890 | |
| 891 | if (compare_mount_options(fsopt, opt, other)) { |
| 892 | dout("monitor(s)/mount options don't match\n"); |
| 893 | return 0; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 894 | } |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 895 | if ((opt->flags & CEPH_OPT_FSID) && |
| 896 | ceph_fsid_compare(&opt->fsid, &other->client->fsid)) { |
| 897 | dout("fsid doesn't match\n"); |
| 898 | return 0; |
| 899 | } |
| 900 | if (fsopt->sb_flags != other->mount_options->sb_flags) { |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 901 | dout("flags differ\n"); |
| 902 | return 0; |
| 903 | } |
| 904 | return 1; |
| 905 | } |
| 906 | |
| 907 | /* |
| 908 | * construct our own bdi so we can control readahead, etc. |
| 909 | */ |
Jeff Mahoney | 00d5643 | 2010-06-10 11:13:58 -0400 | [diff] [blame] | 910 | static atomic_long_t bdi_seq = ATOMIC_LONG_INIT(0); |
Sage Weil | 31e0cf8 | 2010-05-04 16:39:35 -0700 | [diff] [blame] | 911 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 912 | static int ceph_register_bdi(struct super_block *sb, |
| 913 | struct ceph_fs_client *fsc) |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 914 | { |
| 915 | int err; |
| 916 | |
Sage Weil | 83817e3 | 2011-08-04 08:03:44 -0700 | [diff] [blame] | 917 | /* set ra_pages based on rasize mount option? */ |
| 918 | if (fsc->mount_options->rasize >= PAGE_CACHE_SIZE) |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 919 | fsc->backing_dev_info.ra_pages = |
Sage Weil | 83817e3 | 2011-08-04 08:03:44 -0700 | [diff] [blame] | 920 | (fsc->mount_options->rasize + PAGE_CACHE_SIZE - 1) |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 921 | >> PAGE_SHIFT; |
Yehuda Sadeh | e985222 | 2011-07-22 11:12:28 -0700 | [diff] [blame] | 922 | else |
| 923 | fsc->backing_dev_info.ra_pages = |
Christoph Hellwig | df0ce26 | 2015-01-14 10:42:41 +0100 | [diff] [blame] | 924 | VM_MAX_READAHEAD * 1024 / PAGE_CACHE_SIZE; |
Yehuda Sadeh | e985222 | 2011-07-22 11:12:28 -0700 | [diff] [blame] | 925 | |
Joe Perches | d2cc4dd | 2012-11-29 08:37:03 -0600 | [diff] [blame] | 926 | err = bdi_register(&fsc->backing_dev_info, NULL, "ceph-%ld", |
Sage Weil | 31e0cf8 | 2010-05-04 16:39:35 -0700 | [diff] [blame] | 927 | atomic_long_inc_return(&bdi_seq)); |
Sage Weil | 5dfc589 | 2010-05-04 16:14:46 -0700 | [diff] [blame] | 928 | if (!err) |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 929 | sb->s_bdi = &fsc->backing_dev_info; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 930 | return err; |
| 931 | } |
| 932 | |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 933 | static struct dentry *ceph_mount(struct file_system_type *fs_type, |
| 934 | int flags, const char *dev_name, void *data) |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 935 | { |
| 936 | struct super_block *sb; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 937 | struct ceph_fs_client *fsc; |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 938 | struct dentry *res; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 939 | int err; |
| 940 | int (*compare_super)(struct super_block *, void *) = ceph_compare_super; |
Sage Weil | 6a18be1 | 2009-11-04 11:40:05 -0800 | [diff] [blame] | 941 | const char *path = NULL; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 942 | struct ceph_mount_options *fsopt = NULL; |
| 943 | struct ceph_options *opt = NULL; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 944 | |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 945 | dout("ceph_mount\n"); |
Sage Weil | 45195e4 | 2014-02-16 10:05:29 -0800 | [diff] [blame] | 946 | |
| 947 | #ifdef CONFIG_CEPH_FS_POSIX_ACL |
| 948 | flags |= MS_POSIXACL; |
| 949 | #endif |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 950 | err = parse_mount_options(&fsopt, &opt, flags, data, dev_name, &path); |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 951 | if (err < 0) { |
| 952 | res = ERR_PTR(err); |
Sage Weil | 6b80518 | 2009-10-27 11:50:50 -0700 | [diff] [blame] | 953 | goto out_final; |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 954 | } |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 955 | |
| 956 | /* create client (which we may/may not use) */ |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 957 | fsc = create_fs_client(fsopt, opt); |
| 958 | if (IS_ERR(fsc)) { |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 959 | res = ERR_CAST(fsc); |
Noah Watkins | 259a187 | 2011-08-22 13:49:41 -0600 | [diff] [blame] | 960 | destroy_mount_options(fsopt); |
| 961 | ceph_destroy_options(opt); |
Sage Weil | 6b80518 | 2009-10-27 11:50:50 -0700 | [diff] [blame] | 962 | goto out_final; |
| 963 | } |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 964 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 965 | err = ceph_mdsc_init(fsc); |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 966 | if (err < 0) { |
| 967 | res = ERR_PTR(err); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 968 | goto out; |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 969 | } |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 970 | |
| 971 | if (ceph_test_opt(fsc->client, NOSHARE)) |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 972 | compare_super = NULL; |
David Howells | 9249e17 | 2012-06-25 12:55:37 +0100 | [diff] [blame] | 973 | sb = sget(fs_type, compare_super, ceph_set_super, flags, fsc); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 974 | if (IS_ERR(sb)) { |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 975 | res = ERR_CAST(sb); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 976 | goto out; |
| 977 | } |
| 978 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 979 | if (ceph_sb_to_client(sb) != fsc) { |
| 980 | ceph_mdsc_destroy(fsc); |
| 981 | destroy_fs_client(fsc); |
| 982 | fsc = ceph_sb_to_client(sb); |
| 983 | dout("get_sb got existing client %p\n", fsc); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 984 | } else { |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 985 | dout("get_sb using new client %p\n", fsc); |
| 986 | err = ceph_register_bdi(sb, fsc); |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 987 | if (err < 0) { |
| 988 | res = ERR_PTR(err); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 989 | goto out_splat; |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 990 | } |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 991 | } |
| 992 | |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 993 | res = ceph_real_mount(fsc, path); |
| 994 | if (IS_ERR(res)) |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 995 | goto out_splat; |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 996 | dout("root %p inode %p ino %llx.%llx\n", res, |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 997 | d_inode(res), ceph_vinop(d_inode(res))); |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 998 | return res; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 999 | |
| 1000 | out_splat: |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 1001 | ceph_mdsc_close_sessions(fsc->mdsc); |
Al Viro | 3981f2e | 2010-03-21 19:22:29 -0400 | [diff] [blame] | 1002 | deactivate_locked_super(sb); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1003 | goto out_final; |
| 1004 | |
| 1005 | out: |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 1006 | ceph_mdsc_destroy(fsc); |
| 1007 | destroy_fs_client(fsc); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1008 | out_final: |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 1009 | dout("ceph_mount fail %ld\n", PTR_ERR(res)); |
| 1010 | return res; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1011 | } |
| 1012 | |
| 1013 | static void ceph_kill_sb(struct super_block *s) |
| 1014 | { |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 1015 | struct ceph_fs_client *fsc = ceph_sb_to_client(s); |
Christoph Hellwig | e4d2750 | 2015-01-14 10:42:38 +0100 | [diff] [blame] | 1016 | dev_t dev = s->s_dev; |
| 1017 | |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1018 | dout("kill_sb %p\n", s); |
Christoph Hellwig | e4d2750 | 2015-01-14 10:42:38 +0100 | [diff] [blame] | 1019 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 1020 | ceph_mdsc_pre_umount(fsc->mdsc); |
Christoph Hellwig | e4d2750 | 2015-01-14 10:42:38 +0100 | [diff] [blame] | 1021 | generic_shutdown_super(s); |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 1022 | ceph_mdsc_destroy(fsc); |
Christoph Hellwig | e4d2750 | 2015-01-14 10:42:38 +0100 | [diff] [blame] | 1023 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 1024 | destroy_fs_client(fsc); |
Christoph Hellwig | e4d2750 | 2015-01-14 10:42:38 +0100 | [diff] [blame] | 1025 | free_anon_bdev(dev); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1026 | } |
| 1027 | |
| 1028 | static struct file_system_type ceph_fs_type = { |
| 1029 | .owner = THIS_MODULE, |
| 1030 | .name = "ceph", |
Al Viro | a7f9fb2 | 2010-07-26 16:17:55 +0400 | [diff] [blame] | 1031 | .mount = ceph_mount, |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1032 | .kill_sb = ceph_kill_sb, |
| 1033 | .fs_flags = FS_RENAME_DOES_D_MOVE, |
| 1034 | }; |
Eric W. Biederman | 7f78e03 | 2013-03-02 19:39:14 -0800 | [diff] [blame] | 1035 | MODULE_ALIAS_FS("ceph"); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1036 | |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1037 | static int __init init_ceph(void) |
| 1038 | { |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 1039 | int ret = init_caches(); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1040 | if (ret) |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 1041 | goto out; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1042 | |
Yan, Zheng | eb13e83 | 2014-03-09 23:16:40 +0800 | [diff] [blame] | 1043 | ceph_flock_init(); |
Alex Elder | 3ce6cd1 | 2012-01-23 15:49:28 -0600 | [diff] [blame] | 1044 | ceph_xattr_init(); |
Yan, Zheng | 97c85a8 | 2014-11-06 15:09:41 +0800 | [diff] [blame] | 1045 | ret = ceph_snap_init(); |
| 1046 | if (ret) |
| 1047 | goto out_xattr; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1048 | ret = register_filesystem(&ceph_fs_type); |
| 1049 | if (ret) |
Yan, Zheng | 97c85a8 | 2014-11-06 15:09:41 +0800 | [diff] [blame] | 1050 | goto out_snap; |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1051 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 1052 | pr_info("loaded (mds proto %d)\n", CEPH_MDSC_PROTOCOL); |
| 1053 | |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1054 | return 0; |
| 1055 | |
Yan, Zheng | 97c85a8 | 2014-11-06 15:09:41 +0800 | [diff] [blame] | 1056 | out_snap: |
| 1057 | ceph_snap_exit(); |
| 1058 | out_xattr: |
Alex Elder | 3ce6cd1 | 2012-01-23 15:49:28 -0600 | [diff] [blame] | 1059 | ceph_xattr_exit(); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1060 | destroy_caches(); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1061 | out: |
| 1062 | return ret; |
| 1063 | } |
| 1064 | |
| 1065 | static void __exit exit_ceph(void) |
| 1066 | { |
| 1067 | dout("exit_ceph\n"); |
| 1068 | unregister_filesystem(&ceph_fs_type); |
Yan, Zheng | 97c85a8 | 2014-11-06 15:09:41 +0800 | [diff] [blame] | 1069 | ceph_snap_exit(); |
Alex Elder | 3ce6cd1 | 2012-01-23 15:49:28 -0600 | [diff] [blame] | 1070 | ceph_xattr_exit(); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1071 | destroy_caches(); |
Sage Weil | 16725b9 | 2009-10-06 11:31:07 -0700 | [diff] [blame] | 1072 | } |
| 1073 | |
| 1074 | module_init(init_ceph); |
| 1075 | module_exit(exit_ceph); |
| 1076 | |
| 1077 | MODULE_AUTHOR("Sage Weil <sage@newdream.net>"); |
| 1078 | MODULE_AUTHOR("Yehuda Sadeh <yehuda@hq.newdream.net>"); |
| 1079 | MODULE_AUTHOR("Patience Warnick <patience@newdream.net>"); |
| 1080 | MODULE_DESCRIPTION("Ceph filesystem for Linux"); |
| 1081 | MODULE_LICENSE("GPL"); |