Commit | Line | Data |
---|---|---|
f7be4ee0 MM |
1 | /* |
2 | * (C) 2001 Clemson University and The University of Chicago | |
3 | * | |
4 | * See COPYING in top-level directory. | |
5 | */ | |
6 | #include "protocol.h" | |
575e9461 MM |
7 | #include "orangefs-kernel.h" |
8 | #include "orangefs-dev-proto.h" | |
9 | #include "orangefs-bufmap.h" | |
f7be4ee0 | 10 | |
8bb8aefd | 11 | __s32 fsid_of_op(struct orangefs_kernel_op_s *op) |
f7be4ee0 | 12 | { |
8bb8aefd | 13 | __s32 fsid = ORANGEFS_FS_ID_NULL; |
f7be4ee0 MM |
14 | |
15 | if (op) { | |
16 | switch (op->upcall.type) { | |
8bb8aefd | 17 | case ORANGEFS_VFS_OP_FILE_IO: |
f7be4ee0 MM |
18 | fsid = op->upcall.req.io.refn.fs_id; |
19 | break; | |
8bb8aefd | 20 | case ORANGEFS_VFS_OP_LOOKUP: |
f7be4ee0 MM |
21 | fsid = op->upcall.req.lookup.parent_refn.fs_id; |
22 | break; | |
8bb8aefd | 23 | case ORANGEFS_VFS_OP_CREATE: |
f7be4ee0 MM |
24 | fsid = op->upcall.req.create.parent_refn.fs_id; |
25 | break; | |
8bb8aefd | 26 | case ORANGEFS_VFS_OP_GETATTR: |
f7be4ee0 MM |
27 | fsid = op->upcall.req.getattr.refn.fs_id; |
28 | break; | |
8bb8aefd | 29 | case ORANGEFS_VFS_OP_REMOVE: |
f7be4ee0 MM |
30 | fsid = op->upcall.req.remove.parent_refn.fs_id; |
31 | break; | |
8bb8aefd | 32 | case ORANGEFS_VFS_OP_MKDIR: |
f7be4ee0 MM |
33 | fsid = op->upcall.req.mkdir.parent_refn.fs_id; |
34 | break; | |
8bb8aefd | 35 | case ORANGEFS_VFS_OP_READDIR: |
f7be4ee0 MM |
36 | fsid = op->upcall.req.readdir.refn.fs_id; |
37 | break; | |
8bb8aefd | 38 | case ORANGEFS_VFS_OP_SETATTR: |
f7be4ee0 MM |
39 | fsid = op->upcall.req.setattr.refn.fs_id; |
40 | break; | |
8bb8aefd | 41 | case ORANGEFS_VFS_OP_SYMLINK: |
f7be4ee0 MM |
42 | fsid = op->upcall.req.sym.parent_refn.fs_id; |
43 | break; | |
8bb8aefd | 44 | case ORANGEFS_VFS_OP_RENAME: |
f7be4ee0 MM |
45 | fsid = op->upcall.req.rename.old_parent_refn.fs_id; |
46 | break; | |
8bb8aefd | 47 | case ORANGEFS_VFS_OP_STATFS: |
f7be4ee0 MM |
48 | fsid = op->upcall.req.statfs.fs_id; |
49 | break; | |
8bb8aefd | 50 | case ORANGEFS_VFS_OP_TRUNCATE: |
f7be4ee0 MM |
51 | fsid = op->upcall.req.truncate.refn.fs_id; |
52 | break; | |
8bb8aefd | 53 | case ORANGEFS_VFS_OP_MMAP_RA_FLUSH: |
f7be4ee0 MM |
54 | fsid = op->upcall.req.ra_cache_flush.refn.fs_id; |
55 | break; | |
8bb8aefd | 56 | case ORANGEFS_VFS_OP_FS_UMOUNT: |
f7be4ee0 MM |
57 | fsid = op->upcall.req.fs_umount.fs_id; |
58 | break; | |
8bb8aefd | 59 | case ORANGEFS_VFS_OP_GETXATTR: |
f7be4ee0 MM |
60 | fsid = op->upcall.req.getxattr.refn.fs_id; |
61 | break; | |
8bb8aefd | 62 | case ORANGEFS_VFS_OP_SETXATTR: |
f7be4ee0 MM |
63 | fsid = op->upcall.req.setxattr.refn.fs_id; |
64 | break; | |
8bb8aefd | 65 | case ORANGEFS_VFS_OP_LISTXATTR: |
f7be4ee0 MM |
66 | fsid = op->upcall.req.listxattr.refn.fs_id; |
67 | break; | |
8bb8aefd | 68 | case ORANGEFS_VFS_OP_REMOVEXATTR: |
f7be4ee0 MM |
69 | fsid = op->upcall.req.removexattr.refn.fs_id; |
70 | break; | |
8bb8aefd | 71 | case ORANGEFS_VFS_OP_FSYNC: |
f7be4ee0 MM |
72 | fsid = op->upcall.req.fsync.refn.fs_id; |
73 | break; | |
74 | default: | |
75 | break; | |
76 | } | |
77 | } | |
78 | return fsid; | |
79 | } | |
80 | ||
394f647e | 81 | static int orangefs_inode_flags(struct ORANGEFS_sys_attr_s *attrs) |
f7be4ee0 | 82 | { |
394f647e | 83 | int flags = 0; |
8bb8aefd | 84 | if (attrs->flags & ORANGEFS_IMMUTABLE_FL) |
394f647e | 85 | flags |= S_IMMUTABLE; |
f7be4ee0 | 86 | else |
394f647e | 87 | flags &= ~S_IMMUTABLE; |
8bb8aefd | 88 | if (attrs->flags & ORANGEFS_APPEND_FL) |
394f647e | 89 | flags |= S_APPEND; |
f7be4ee0 | 90 | else |
394f647e | 91 | flags &= ~S_APPEND; |
8bb8aefd | 92 | if (attrs->flags & ORANGEFS_NOATIME_FL) |
394f647e | 93 | flags |= S_NOATIME; |
f7be4ee0 | 94 | else |
394f647e MB |
95 | flags &= ~S_NOATIME; |
96 | return flags; | |
97 | } | |
98 | ||
99 | static int orangefs_inode_perms(struct ORANGEFS_sys_attr_s *attrs) | |
100 | { | |
101 | int perm_mode = 0; | |
102 | ||
103 | if (attrs->perms & ORANGEFS_O_EXECUTE) | |
104 | perm_mode |= S_IXOTH; | |
105 | if (attrs->perms & ORANGEFS_O_WRITE) | |
106 | perm_mode |= S_IWOTH; | |
107 | if (attrs->perms & ORANGEFS_O_READ) | |
108 | perm_mode |= S_IROTH; | |
109 | ||
110 | if (attrs->perms & ORANGEFS_G_EXECUTE) | |
111 | perm_mode |= S_IXGRP; | |
112 | if (attrs->perms & ORANGEFS_G_WRITE) | |
113 | perm_mode |= S_IWGRP; | |
114 | if (attrs->perms & ORANGEFS_G_READ) | |
115 | perm_mode |= S_IRGRP; | |
f7be4ee0 | 116 | |
394f647e MB |
117 | if (attrs->perms & ORANGEFS_U_EXECUTE) |
118 | perm_mode |= S_IXUSR; | |
119 | if (attrs->perms & ORANGEFS_U_WRITE) | |
120 | perm_mode |= S_IWUSR; | |
121 | if (attrs->perms & ORANGEFS_U_READ) | |
122 | perm_mode |= S_IRUSR; | |
123 | ||
124 | if (attrs->perms & ORANGEFS_G_SGID) | |
125 | perm_mode |= S_ISGID; | |
126 | if (attrs->perms & ORANGEFS_U_SUID) | |
127 | perm_mode |= S_ISUID; | |
128 | ||
129 | return perm_mode; | |
f7be4ee0 MM |
130 | } |
131 | ||
132 | /* NOTE: symname is ignored unless the inode is a sym link */ | |
133 | static int copy_attributes_to_inode(struct inode *inode, | |
8bb8aefd | 134 | struct ORANGEFS_sys_attr_s *attrs, |
f7be4ee0 MM |
135 | char *symname) |
136 | { | |
137 | int ret = -1; | |
8bb8aefd | 138 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); |
f7be4ee0 MM |
139 | loff_t inode_size = 0; |
140 | loff_t rounded_up_size = 0; | |
141 | ||
142 | ||
143 | /* | |
54804949 MM |
144 | * arbitrarily set the inode block size; FIXME: we need to |
145 | * resolve the difference between the reported inode blocksize | |
146 | * and the PAGE_CACHE_SIZE, since our block count will always | |
147 | * be wrong. | |
148 | * | |
149 | * For now, we're setting the block count to be the proper | |
150 | * number assuming the block size is 512 bytes, and the size is | |
151 | * rounded up to the nearest 4K. This is apparently required | |
152 | * to get proper size reports from the 'du' shell utility. | |
153 | * | |
154 | * changing the inode->i_blkbits to something other than | |
155 | * PAGE_CACHE_SHIFT breaks mmap/execution as we depend on that. | |
f7be4ee0 MM |
156 | */ |
157 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
158 | "attrs->mask = %x (objtype = %s)\n", | |
159 | attrs->mask, | |
8bb8aefd YL |
160 | attrs->objtype == ORANGEFS_TYPE_METAFILE ? "file" : |
161 | attrs->objtype == ORANGEFS_TYPE_DIRECTORY ? "directory" : | |
162 | attrs->objtype == ORANGEFS_TYPE_SYMLINK ? "symlink" : | |
f7be4ee0 MM |
163 | "invalid/unknown"); |
164 | ||
165 | switch (attrs->objtype) { | |
8bb8aefd | 166 | case ORANGEFS_TYPE_METAFILE: |
394f647e | 167 | inode->i_flags = orangefs_inode_flags(attrs); |
8bb8aefd | 168 | if (attrs->mask & ORANGEFS_ATTR_SYS_SIZE) { |
f7be4ee0 MM |
169 | inode_size = (loff_t) attrs->size; |
170 | rounded_up_size = | |
171 | (inode_size + (4096 - (inode_size % 4096))); | |
172 | ||
8bb8aefd | 173 | orangefs_lock_inode(inode); |
f7be4ee0 MM |
174 | inode->i_bytes = inode_size; |
175 | inode->i_blocks = | |
176 | (unsigned long)(rounded_up_size / 512); | |
8bb8aefd | 177 | orangefs_unlock_inode(inode); |
f7be4ee0 MM |
178 | |
179 | /* | |
180 | * NOTE: make sure all the places we're called | |
181 | * from have the inode->i_sem lock. We're fine | |
182 | * in 99% of the cases since we're mostly | |
183 | * called from a lookup. | |
184 | */ | |
185 | inode->i_size = inode_size; | |
186 | } | |
187 | break; | |
8bb8aefd | 188 | case ORANGEFS_TYPE_SYMLINK: |
f7be4ee0 MM |
189 | if (symname != NULL) { |
190 | inode->i_size = (loff_t) strlen(symname); | |
191 | break; | |
192 | } | |
193 | /*FALLTHRU*/ | |
194 | default: | |
f0566532 MM |
195 | inode->i_size = PAGE_CACHE_SIZE; |
196 | ||
8bb8aefd | 197 | orangefs_lock_inode(inode); |
f0566532 | 198 | inode_set_bytes(inode, inode->i_size); |
8bb8aefd | 199 | orangefs_unlock_inode(inode); |
f7be4ee0 MM |
200 | break; |
201 | } | |
202 | ||
203 | inode->i_uid = make_kuid(&init_user_ns, attrs->owner); | |
204 | inode->i_gid = make_kgid(&init_user_ns, attrs->group); | |
205 | inode->i_atime.tv_sec = (time_t) attrs->atime; | |
206 | inode->i_mtime.tv_sec = (time_t) attrs->mtime; | |
207 | inode->i_ctime.tv_sec = (time_t) attrs->ctime; | |
208 | inode->i_atime.tv_nsec = 0; | |
209 | inode->i_mtime.tv_nsec = 0; | |
210 | inode->i_ctime.tv_nsec = 0; | |
211 | ||
394f647e | 212 | inode->i_mode = orangefs_inode_perms(attrs); |
f7be4ee0 MM |
213 | |
214 | if (is_root_handle(inode)) { | |
215 | /* special case: mark the root inode as sticky */ | |
216 | inode->i_mode |= S_ISVTX; | |
217 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
218 | "Marking inode %pU as sticky\n", | |
219 | get_khandle_from_ino(inode)); | |
220 | } | |
221 | ||
222 | switch (attrs->objtype) { | |
8bb8aefd | 223 | case ORANGEFS_TYPE_METAFILE: |
f7be4ee0 MM |
224 | inode->i_mode |= S_IFREG; |
225 | ret = 0; | |
226 | break; | |
8bb8aefd | 227 | case ORANGEFS_TYPE_DIRECTORY: |
f7be4ee0 MM |
228 | inode->i_mode |= S_IFDIR; |
229 | /* NOTE: we have no good way to keep nlink consistent | |
230 | * for directories across clients; keep constant at 1. | |
231 | * Why 1? If we go with 2, then find(1) gets confused | |
232 | * and won't work properly withouth the -noleaf option | |
233 | */ | |
234 | set_nlink(inode, 1); | |
235 | ret = 0; | |
236 | break; | |
8bb8aefd | 237 | case ORANGEFS_TYPE_SYMLINK: |
f7be4ee0 MM |
238 | inode->i_mode |= S_IFLNK; |
239 | ||
240 | /* copy link target to inode private data */ | |
8bb8aefd YL |
241 | if (orangefs_inode && symname) { |
242 | strncpy(orangefs_inode->link_target, | |
f7be4ee0 | 243 | symname, |
8bb8aefd | 244 | ORANGEFS_NAME_MAX); |
f7be4ee0 MM |
245 | gossip_debug(GOSSIP_UTILS_DEBUG, |
246 | "Copied attr link target %s\n", | |
8bb8aefd | 247 | orangefs_inode->link_target); |
f7be4ee0 MM |
248 | } |
249 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
250 | "symlink mode %o\n", | |
251 | inode->i_mode); | |
252 | ret = 0; | |
253 | break; | |
254 | default: | |
8bb8aefd | 255 | gossip_err("orangefs: copy_attributes_to_inode: got invalid attribute type %x\n", |
f7be4ee0 MM |
256 | attrs->objtype); |
257 | } | |
258 | ||
259 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
8bb8aefd | 260 | "orangefs: copy_attributes_to_inode: setting i_mode to %o, i_size to %lu\n", |
f7be4ee0 MM |
261 | inode->i_mode, |
262 | (unsigned long)i_size_read(inode)); | |
263 | ||
264 | return ret; | |
265 | } | |
266 | ||
267 | /* | |
268 | * NOTE: in kernel land, we never use the sys_attr->link_target for | |
269 | * anything, so don't bother copying it into the sys_attr object here. | |
270 | */ | |
271 | static inline int copy_attributes_from_inode(struct inode *inode, | |
8bb8aefd | 272 | struct ORANGEFS_sys_attr_s *attrs, |
f7be4ee0 MM |
273 | struct iattr *iattr) |
274 | { | |
275 | umode_t tmp_mode; | |
276 | ||
277 | if (!iattr || !inode || !attrs) { | |
278 | gossip_err("NULL iattr (%p), inode (%p), attrs (%p) " | |
279 | "in copy_attributes_from_inode!\n", | |
280 | iattr, | |
281 | inode, | |
282 | attrs); | |
283 | return -EINVAL; | |
284 | } | |
285 | /* | |
286 | * We need to be careful to only copy the attributes out of the | |
287 | * iattr object that we know are valid. | |
288 | */ | |
289 | attrs->mask = 0; | |
290 | if (iattr->ia_valid & ATTR_UID) { | |
291 | attrs->owner = from_kuid(current_user_ns(), iattr->ia_uid); | |
8bb8aefd | 292 | attrs->mask |= ORANGEFS_ATTR_SYS_UID; |
f7be4ee0 MM |
293 | gossip_debug(GOSSIP_UTILS_DEBUG, "(UID) %d\n", attrs->owner); |
294 | } | |
295 | if (iattr->ia_valid & ATTR_GID) { | |
296 | attrs->group = from_kgid(current_user_ns(), iattr->ia_gid); | |
8bb8aefd | 297 | attrs->mask |= ORANGEFS_ATTR_SYS_GID; |
f7be4ee0 MM |
298 | gossip_debug(GOSSIP_UTILS_DEBUG, "(GID) %d\n", attrs->group); |
299 | } | |
300 | ||
301 | if (iattr->ia_valid & ATTR_ATIME) { | |
8bb8aefd | 302 | attrs->mask |= ORANGEFS_ATTR_SYS_ATIME; |
f7be4ee0 MM |
303 | if (iattr->ia_valid & ATTR_ATIME_SET) { |
304 | attrs->atime = | |
8bb8aefd YL |
305 | orangefs_convert_time_field(&iattr->ia_atime); |
306 | attrs->mask |= ORANGEFS_ATTR_SYS_ATIME_SET; | |
f7be4ee0 MM |
307 | } |
308 | } | |
309 | if (iattr->ia_valid & ATTR_MTIME) { | |
8bb8aefd | 310 | attrs->mask |= ORANGEFS_ATTR_SYS_MTIME; |
f7be4ee0 MM |
311 | if (iattr->ia_valid & ATTR_MTIME_SET) { |
312 | attrs->mtime = | |
8bb8aefd YL |
313 | orangefs_convert_time_field(&iattr->ia_mtime); |
314 | attrs->mask |= ORANGEFS_ATTR_SYS_MTIME_SET; | |
f7be4ee0 MM |
315 | } |
316 | } | |
317 | if (iattr->ia_valid & ATTR_CTIME) | |
8bb8aefd | 318 | attrs->mask |= ORANGEFS_ATTR_SYS_CTIME; |
f7be4ee0 MM |
319 | |
320 | /* | |
8bb8aefd | 321 | * ORANGEFS cannot set size with a setattr operation. Probably not likely |
f7be4ee0 MM |
322 | * to be requested through the VFS, but just in case, don't worry about |
323 | * ATTR_SIZE | |
324 | */ | |
325 | ||
326 | if (iattr->ia_valid & ATTR_MODE) { | |
327 | tmp_mode = iattr->ia_mode; | |
328 | if (tmp_mode & (S_ISVTX)) { | |
329 | if (is_root_handle(inode)) { | |
330 | /* | |
331 | * allow sticky bit to be set on root (since | |
332 | * it shows up that way by default anyhow), | |
333 | * but don't show it to the server | |
334 | */ | |
335 | tmp_mode -= S_ISVTX; | |
336 | } else { | |
337 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
338 | "User attempted to set sticky bit on non-root directory; returning EINVAL.\n"); | |
339 | return -EINVAL; | |
340 | } | |
341 | } | |
342 | ||
343 | if (tmp_mode & (S_ISUID)) { | |
344 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
345 | "Attempting to set setuid bit (not supported); returning EINVAL.\n"); | |
346 | return -EINVAL; | |
347 | } | |
348 | ||
8bb8aefd YL |
349 | attrs->perms = ORANGEFS_util_translate_mode(tmp_mode); |
350 | attrs->mask |= ORANGEFS_ATTR_SYS_PERM; | |
f7be4ee0 MM |
351 | } |
352 | ||
353 | return 0; | |
354 | } | |
355 | ||
99109822 MB |
356 | static int compare_attributes_to_inode(struct inode *inode, |
357 | struct ORANGEFS_sys_attr_s *attrs, | |
fe88adc3 MB |
358 | char *symname, |
359 | int mask) | |
99109822 MB |
360 | { |
361 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); | |
362 | loff_t inode_size, rounded_up_size; | |
363 | ||
fe88adc3 MB |
364 | /* Much of what happens below relies on the type being around. */ |
365 | if (!(mask & ORANGEFS_ATTR_SYS_TYPE)) | |
366 | return 0; | |
367 | ||
368 | if (attrs->objtype == ORANGEFS_TYPE_METAFILE && | |
369 | inode->i_flags != orangefs_inode_flags(attrs)) | |
370 | return 0; | |
371 | ||
99109822 MB |
372 | /* Compare file size. */ |
373 | ||
374 | switch (attrs->objtype) { | |
375 | case ORANGEFS_TYPE_METAFILE: | |
fe88adc3 MB |
376 | if (mask & ORANGEFS_ATTR_SYS_SIZE) { |
377 | inode_size = attrs->size; | |
378 | rounded_up_size = inode_size + | |
379 | (4096 - (inode_size % 4096)); | |
380 | if (inode->i_bytes != inode_size || | |
381 | inode->i_blocks != rounded_up_size/512) | |
382 | return 0; | |
383 | } | |
99109822 MB |
384 | break; |
385 | case ORANGEFS_TYPE_SYMLINK: | |
fe88adc3 MB |
386 | if (mask & ORANGEFS_ATTR_SYS_SIZE) |
387 | if (symname && strlen(symname) != inode->i_size) | |
388 | return 0; | |
99109822 MB |
389 | break; |
390 | default: | |
391 | if (inode->i_size != PAGE_CACHE_SIZE && | |
392 | inode_get_bytes(inode) != PAGE_CACHE_SIZE) | |
393 | return 0; | |
394 | } | |
395 | ||
396 | /* Compare general attributes. */ | |
397 | ||
fe88adc3 MB |
398 | if (mask & ORANGEFS_ATTR_SYS_UID && |
399 | !uid_eq(inode->i_uid, make_kuid(&init_user_ns, attrs->owner))) | |
400 | return 0; | |
401 | if (mask & ORANGEFS_ATTR_SYS_GID && | |
402 | !gid_eq(inode->i_gid, make_kgid(&init_user_ns, attrs->group))) | |
403 | return 0; | |
404 | if (mask & ORANGEFS_ATTR_SYS_ATIME && | |
405 | inode->i_atime.tv_sec != attrs->atime) | |
406 | return 0; | |
407 | if (mask & ORANGEFS_ATTR_SYS_MTIME && | |
408 | inode->i_atime.tv_sec != attrs->mtime) | |
409 | return 0; | |
410 | if (mask & ORANGEFS_ATTR_SYS_CTIME && | |
411 | inode->i_atime.tv_sec != attrs->ctime) | |
412 | return 0; | |
413 | if (inode->i_atime.tv_nsec != 0 || | |
99109822 MB |
414 | inode->i_mtime.tv_nsec != 0 || |
415 | inode->i_ctime.tv_nsec != 0) | |
416 | return 0; | |
417 | ||
fe88adc3 MB |
418 | if (mask & ORANGEFS_ATTR_SYS_PERM && |
419 | (inode->i_mode & ~(S_ISVTX|S_IFREG|S_IFDIR|S_IFLNK)) != | |
99109822 MB |
420 | orangefs_inode_perms(attrs)) |
421 | return 0; | |
422 | ||
423 | if (is_root_handle(inode)) | |
424 | if (!(inode->i_mode & S_ISVTX)) | |
425 | return 0; | |
426 | ||
427 | /* Compare file type. */ | |
428 | ||
429 | switch (attrs->objtype) { | |
430 | case ORANGEFS_TYPE_METAFILE: | |
431 | if (!(inode->i_mode & S_IFREG)) | |
432 | return 0; | |
433 | break; | |
434 | case ORANGEFS_TYPE_DIRECTORY: | |
435 | if (!(inode->i_mode & S_IFDIR)) | |
436 | return 0; | |
437 | if (inode->i_nlink != 1) | |
438 | return 0; | |
439 | break; | |
440 | case ORANGEFS_TYPE_SYMLINK: | |
441 | if (!(inode->i_mode & S_IFLNK)) | |
442 | return 0; | |
fe88adc3 MB |
443 | if (orangefs_inode && symname && |
444 | mask & ORANGEFS_ATTR_SYS_LNK_TARGET) | |
99109822 MB |
445 | if (strcmp(orangefs_inode->link_target, symname)) |
446 | return 0; | |
447 | break; | |
448 | default: | |
449 | gossip_err("orangefs: compare_attributes_to_inode: got invalid attribute type %x\n", | |
450 | attrs->objtype); | |
451 | ||
452 | } | |
453 | ||
454 | return 1; | |
455 | } | |
456 | ||
f7be4ee0 | 457 | /* |
99109822 MB |
458 | * Issues a orangefs getattr request and fills in the appropriate inode |
459 | * attributes if successful. When check is 0, returns 0 on success and -errno | |
460 | * otherwise. When check is 1, returns 1 on success where the inode is valid | |
461 | * and 0 on success where the inode is stale and -errno otherwise. | |
f7be4ee0 | 462 | */ |
99109822 | 463 | int orangefs_inode_getattr(struct inode *inode, __u32 getattr_mask, int check) |
f7be4ee0 | 464 | { |
8bb8aefd YL |
465 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); |
466 | struct orangefs_kernel_op_s *new_op; | |
f7be4ee0 MM |
467 | int ret = -EINVAL; |
468 | ||
469 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
470 | "%s: called on inode %pU\n", | |
471 | __func__, | |
472 | get_khandle_from_ino(inode)); | |
473 | ||
8bb8aefd | 474 | new_op = op_alloc(ORANGEFS_VFS_OP_GETATTR); |
f7be4ee0 MM |
475 | if (!new_op) |
476 | return -ENOMEM; | |
8bb8aefd | 477 | new_op->upcall.req.getattr.refn = orangefs_inode->refn; |
f7be4ee0 MM |
478 | new_op->upcall.req.getattr.mask = getattr_mask; |
479 | ||
480 | ret = service_operation(new_op, __func__, | |
481 | get_interruptible_flag(inode)); | |
482 | if (ret != 0) | |
483 | goto out; | |
484 | ||
99109822 MB |
485 | if (check) { |
486 | ret = compare_attributes_to_inode(inode, | |
487 | &new_op->downcall.resp.getattr.attributes, | |
fe88adc3 MB |
488 | new_op->downcall.resp.getattr.link_target, |
489 | getattr_mask); | |
99109822 MB |
490 | |
491 | if (new_op->downcall.resp.getattr.attributes.objtype == | |
492 | ORANGEFS_TYPE_METAFILE) { | |
493 | if (orangefs_inode->blksize != | |
494 | new_op->downcall.resp.getattr.attributes.blksize) | |
495 | ret = 0; | |
496 | } else { | |
497 | if (orangefs_inode->blksize != 1 << inode->i_blkbits) | |
498 | ret = 0; | |
499 | } | |
f7be4ee0 | 500 | } else { |
99109822 MB |
501 | if (copy_attributes_to_inode(inode, |
502 | &new_op->downcall.resp.getattr.attributes, | |
503 | new_op->downcall.resp.getattr.link_target)) { | |
504 | gossip_err("%s: failed to copy attributes\n", __func__); | |
505 | ret = -ENOENT; | |
506 | goto out; | |
507 | } | |
f7be4ee0 | 508 | |
99109822 MB |
509 | /* |
510 | * Store blksize in orangefs specific part of inode structure; | |
511 | * we are only going to use this to report to stat to make sure | |
512 | * it doesn't perturb any inode related code paths. | |
513 | */ | |
514 | if (new_op->downcall.resp.getattr.attributes.objtype == | |
515 | ORANGEFS_TYPE_METAFILE) { | |
516 | orangefs_inode->blksize = new_op->downcall.resp. | |
517 | getattr.attributes.blksize; | |
518 | } else { | |
519 | /* | |
520 | * mimic behavior of generic_fillattr() for other file | |
521 | * types. | |
522 | */ | |
523 | orangefs_inode->blksize = (1 << inode->i_blkbits); | |
524 | ||
525 | } | |
f7be4ee0 MM |
526 | } |
527 | ||
528 | out: | |
529 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
530 | "Getattr on handle %pU, " | |
531 | "fsid %d\n (inode ct = %d) returned %d\n", | |
8bb8aefd YL |
532 | &orangefs_inode->refn.khandle, |
533 | orangefs_inode->refn.fs_id, | |
f7be4ee0 MM |
534 | (int)atomic_read(&inode->i_count), |
535 | ret); | |
536 | ||
537 | op_release(new_op); | |
538 | return ret; | |
539 | } | |
540 | ||
541 | /* | |
8bb8aefd | 542 | * issues a orangefs setattr request to make sure the new attribute values |
f7be4ee0 MM |
543 | * take effect if successful. returns 0 on success; -errno otherwise |
544 | */ | |
8bb8aefd | 545 | int orangefs_inode_setattr(struct inode *inode, struct iattr *iattr) |
f7be4ee0 | 546 | { |
8bb8aefd YL |
547 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); |
548 | struct orangefs_kernel_op_s *new_op; | |
f7be4ee0 MM |
549 | int ret; |
550 | ||
8bb8aefd | 551 | new_op = op_alloc(ORANGEFS_VFS_OP_SETATTR); |
f7be4ee0 MM |
552 | if (!new_op) |
553 | return -ENOMEM; | |
554 | ||
8bb8aefd | 555 | new_op->upcall.req.setattr.refn = orangefs_inode->refn; |
f7be4ee0 MM |
556 | ret = copy_attributes_from_inode(inode, |
557 | &new_op->upcall.req.setattr.attributes, | |
558 | iattr); | |
ed42fe05 AV |
559 | if (ret >= 0) { |
560 | ret = service_operation(new_op, __func__, | |
f7be4ee0 MM |
561 | get_interruptible_flag(inode)); |
562 | ||
ed42fe05 AV |
563 | gossip_debug(GOSSIP_UTILS_DEBUG, |
564 | "orangefs_inode_setattr: returning %d\n", | |
565 | ret); | |
566 | } | |
f7be4ee0 | 567 | |
f7be4ee0 MM |
568 | op_release(new_op); |
569 | ||
570 | /* | |
571 | * successful setattr should clear the atime, mtime and | |
572 | * ctime flags. | |
573 | */ | |
574 | if (ret == 0) { | |
8bb8aefd YL |
575 | ClearAtimeFlag(orangefs_inode); |
576 | ClearMtimeFlag(orangefs_inode); | |
577 | ClearCtimeFlag(orangefs_inode); | |
578 | ClearModeFlag(orangefs_inode); | |
f7be4ee0 MM |
579 | } |
580 | ||
581 | return ret; | |
582 | } | |
583 | ||
8bb8aefd | 584 | int orangefs_flush_inode(struct inode *inode) |
f7be4ee0 MM |
585 | { |
586 | /* | |
587 | * If it is a dirty inode, this function gets called. | |
588 | * Gather all the information that needs to be setattr'ed | |
589 | * Right now, this will only be used for mode, atime, mtime | |
590 | * and/or ctime. | |
591 | */ | |
592 | struct iattr wbattr; | |
593 | int ret; | |
594 | int mtime_flag; | |
595 | int ctime_flag; | |
596 | int atime_flag; | |
597 | int mode_flag; | |
8bb8aefd | 598 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); |
f7be4ee0 MM |
599 | |
600 | memset(&wbattr, 0, sizeof(wbattr)); | |
601 | ||
602 | /* | |
603 | * check inode flags up front, and clear them if they are set. This | |
604 | * will prevent multiple processes from all trying to flush the same | |
605 | * inode if they call close() simultaneously | |
606 | */ | |
8bb8aefd YL |
607 | mtime_flag = MtimeFlag(orangefs_inode); |
608 | ClearMtimeFlag(orangefs_inode); | |
609 | ctime_flag = CtimeFlag(orangefs_inode); | |
610 | ClearCtimeFlag(orangefs_inode); | |
611 | atime_flag = AtimeFlag(orangefs_inode); | |
612 | ClearAtimeFlag(orangefs_inode); | |
613 | mode_flag = ModeFlag(orangefs_inode); | |
614 | ClearModeFlag(orangefs_inode); | |
f7be4ee0 MM |
615 | |
616 | /* -- Lazy atime,mtime and ctime update -- | |
617 | * Note: all times are dictated by server in the new scheme | |
618 | * and not by the clients | |
619 | * | |
620 | * Also mode updates are being handled now.. | |
621 | */ | |
622 | ||
623 | if (mtime_flag) | |
624 | wbattr.ia_valid |= ATTR_MTIME; | |
625 | if (ctime_flag) | |
626 | wbattr.ia_valid |= ATTR_CTIME; | |
627 | if (atime_flag) | |
628 | wbattr.ia_valid |= ATTR_ATIME; | |
629 | ||
630 | if (mode_flag) { | |
631 | wbattr.ia_mode = inode->i_mode; | |
632 | wbattr.ia_valid |= ATTR_MODE; | |
633 | } | |
634 | ||
635 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
8bb8aefd | 636 | "*********** orangefs_flush_inode: %pU " |
f7be4ee0 MM |
637 | "(ia_valid %d)\n", |
638 | get_khandle_from_ino(inode), | |
639 | wbattr.ia_valid); | |
640 | if (wbattr.ia_valid == 0) { | |
641 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
8bb8aefd | 642 | "orangefs_flush_inode skipping setattr()\n"); |
f7be4ee0 MM |
643 | return 0; |
644 | } | |
645 | ||
646 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
8bb8aefd | 647 | "orangefs_flush_inode (%pU) writing mode %o\n", |
f7be4ee0 MM |
648 | get_khandle_from_ino(inode), |
649 | inode->i_mode); | |
650 | ||
8bb8aefd | 651 | ret = orangefs_inode_setattr(inode, &wbattr); |
f7be4ee0 MM |
652 | |
653 | return ret; | |
654 | } | |
655 | ||
8bb8aefd | 656 | int orangefs_unmount_sb(struct super_block *sb) |
f7be4ee0 MM |
657 | { |
658 | int ret = -EINVAL; | |
8bb8aefd | 659 | struct orangefs_kernel_op_s *new_op = NULL; |
f7be4ee0 MM |
660 | |
661 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
8bb8aefd | 662 | "orangefs_unmount_sb called on sb %p\n", |
f7be4ee0 MM |
663 | sb); |
664 | ||
8bb8aefd | 665 | new_op = op_alloc(ORANGEFS_VFS_OP_FS_UMOUNT); |
f7be4ee0 MM |
666 | if (!new_op) |
667 | return -ENOMEM; | |
8bb8aefd YL |
668 | new_op->upcall.req.fs_umount.id = ORANGEFS_SB(sb)->id; |
669 | new_op->upcall.req.fs_umount.fs_id = ORANGEFS_SB(sb)->fs_id; | |
670 | strncpy(new_op->upcall.req.fs_umount.orangefs_config_server, | |
671 | ORANGEFS_SB(sb)->devname, | |
672 | ORANGEFS_MAX_SERVER_ADDR_LEN); | |
f7be4ee0 MM |
673 | |
674 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
8bb8aefd YL |
675 | "Attempting ORANGEFS Unmount via host %s\n", |
676 | new_op->upcall.req.fs_umount.orangefs_config_server); | |
f7be4ee0 | 677 | |
8bb8aefd | 678 | ret = service_operation(new_op, "orangefs_fs_umount", 0); |
f7be4ee0 MM |
679 | |
680 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
8bb8aefd | 681 | "orangefs_unmount: got return value of %d\n", ret); |
f7be4ee0 MM |
682 | if (ret) |
683 | sb = ERR_PTR(ret); | |
684 | else | |
8bb8aefd | 685 | ORANGEFS_SB(sb)->mount_pending = 1; |
f7be4ee0 MM |
686 | |
687 | op_release(new_op); | |
688 | return ret; | |
689 | } | |
690 | ||
691 | /* | |
692 | * NOTE: on successful cancellation, be sure to return -EINTR, as | |
693 | * that's the return value the caller expects | |
694 | */ | |
8bb8aefd | 695 | int orangefs_cancel_op_in_progress(__u64 tag) |
f7be4ee0 MM |
696 | { |
697 | int ret = -EINVAL; | |
8bb8aefd | 698 | struct orangefs_kernel_op_s *new_op = NULL; |
f7be4ee0 MM |
699 | |
700 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
8bb8aefd | 701 | "orangefs_cancel_op_in_progress called on tag %llu\n", |
f7be4ee0 MM |
702 | llu(tag)); |
703 | ||
8bb8aefd | 704 | new_op = op_alloc(ORANGEFS_VFS_OP_CANCEL); |
f7be4ee0 MM |
705 | if (!new_op) |
706 | return -ENOMEM; | |
707 | new_op->upcall.req.cancel.op_tag = tag; | |
708 | ||
709 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
8bb8aefd | 710 | "Attempting ORANGEFS operation cancellation of tag %llu\n", |
f7be4ee0 MM |
711 | llu(new_op->upcall.req.cancel.op_tag)); |
712 | ||
8bb8aefd | 713 | ret = service_operation(new_op, "orangefs_cancel", ORANGEFS_OP_CANCELLATION); |
f7be4ee0 MM |
714 | |
715 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
8bb8aefd | 716 | "orangefs_cancel_op_in_progress: got return value of %d\n", |
f7be4ee0 MM |
717 | ret); |
718 | ||
719 | op_release(new_op); | |
720 | return ret; | |
721 | } | |
722 | ||
8bb8aefd | 723 | void orangefs_make_bad_inode(struct inode *inode) |
f7be4ee0 MM |
724 | { |
725 | if (is_root_handle(inode)) { | |
726 | /* | |
727 | * if this occurs, the pvfs2-client-core was killed but we | |
728 | * can't afford to lose the inode operations and such | |
729 | * associated with the root handle in any case. | |
730 | */ | |
731 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
732 | "*** NOT making bad root inode %pU\n", | |
733 | get_khandle_from_ino(inode)); | |
734 | } else { | |
735 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
736 | "*** making bad inode %pU\n", | |
737 | get_khandle_from_ino(inode)); | |
738 | make_bad_inode(inode); | |
739 | } | |
740 | } | |
741 | ||
8c3905ad | 742 | /* Block all blockable signals... */ |
c146c0b8 | 743 | void orangefs_block_signals(sigset_t *orig_sigset) |
f7be4ee0 | 744 | { |
8c3905ad MM |
745 | sigset_t mask; |
746 | ||
747 | /* | |
748 | * Initialize all entries in the signal set to the | |
749 | * inverse of the given mask. | |
750 | */ | |
751 | siginitsetinv(&mask, sigmask(SIGKILL)); | |
752 | ||
753 | /* Block 'em Danno... */ | |
754 | sigprocmask(SIG_BLOCK, &mask, orig_sigset); | |
f7be4ee0 MM |
755 | } |
756 | ||
8c3905ad | 757 | /* set the signal mask to the given template... */ |
c146c0b8 | 758 | void orangefs_set_signals(sigset_t *sigset) |
f7be4ee0 | 759 | { |
8c3905ad | 760 | sigprocmask(SIG_SETMASK, sigset, NULL); |
f7be4ee0 MM |
761 | } |
762 | ||
54804949 MM |
763 | /* |
764 | * The following is a very dirty hack that is now a permanent part of the | |
8bb8aefd | 765 | * ORANGEFS protocol. See protocol.h for more error definitions. |
54804949 | 766 | */ |
894ac432 | 767 | |
8bb8aefd | 768 | /* The order matches include/orangefs-types.h in the OrangeFS source. */ |
894ac432 | 769 | static int PINT_errno_mapping[] = { |
54804949 MM |
770 | 0, EPERM, ENOENT, EINTR, EIO, ENXIO, EBADF, EAGAIN, ENOMEM, |
771 | EFAULT, EBUSY, EEXIST, ENODEV, ENOTDIR, EISDIR, EINVAL, EMFILE, | |
772 | EFBIG, ENOSPC, EROFS, EMLINK, EPIPE, EDEADLK, ENAMETOOLONG, | |
773 | ENOLCK, ENOSYS, ENOTEMPTY, ELOOP, EWOULDBLOCK, ENOMSG, EUNATCH, | |
774 | EBADR, EDEADLOCK, ENODATA, ETIME, ENONET, EREMOTE, ECOMM, | |
775 | EPROTO, EBADMSG, EOVERFLOW, ERESTART, EMSGSIZE, EPROTOTYPE, | |
776 | ENOPROTOOPT, EPROTONOSUPPORT, EOPNOTSUPP, EADDRINUSE, | |
777 | EADDRNOTAVAIL, ENETDOWN, ENETUNREACH, ENETRESET, ENOBUFS, | |
778 | ETIMEDOUT, ECONNREFUSED, EHOSTDOWN, EHOSTUNREACH, EALREADY, | |
779 | EACCES, ECONNRESET, ERANGE | |
894ac432 | 780 | }; |
f7be4ee0 | 781 | |
8bb8aefd | 782 | int orangefs_normalize_to_errno(__s32 error_code) |
f7be4ee0 | 783 | { |
54804949 MM |
784 | __u32 i; |
785 | ||
894ac432 MB |
786 | /* Success */ |
787 | if (error_code == 0) { | |
788 | return 0; | |
54804949 MM |
789 | /* |
790 | * This shouldn't ever happen. If it does it should be fixed on the | |
791 | * server. | |
792 | */ | |
894ac432 | 793 | } else if (error_code > 0) { |
8bb8aefd YL |
794 | gossip_err("orangefs: error status receieved.\n"); |
795 | gossip_err("orangefs: assuming error code is inverted.\n"); | |
f7be4ee0 MM |
796 | error_code = -error_code; |
797 | } | |
798 | ||
54804949 | 799 | /* |
8bb8aefd | 800 | * XXX: This is very bad since error codes from ORANGEFS may not be |
54804949 MM |
801 | * suitable for return into userspace. |
802 | */ | |
894ac432 | 803 | |
54804949 | 804 | /* |
8bb8aefd | 805 | * Convert ORANGEFS error values into errno values suitable for return |
54804949 MM |
806 | * from the kernel. |
807 | */ | |
8bb8aefd | 808 | if ((-error_code) & ORANGEFS_NON_ERRNO_ERROR_BIT) { |
894ac432 | 809 | if (((-error_code) & |
8bb8aefd YL |
810 | (ORANGEFS_ERROR_NUMBER_BITS|ORANGEFS_NON_ERRNO_ERROR_BIT| |
811 | ORANGEFS_ERROR_BIT)) == ORANGEFS_ECANCEL) { | |
f7be4ee0 MM |
812 | /* |
813 | * cancellation error codes generally correspond to | |
814 | * a timeout from the client's perspective | |
815 | */ | |
816 | error_code = -ETIMEDOUT; | |
817 | } else { | |
818 | /* assume a default error code */ | |
8bb8aefd | 819 | gossip_err("orangefs: warning: got error code without errno equivalent: %d.\n", error_code); |
f7be4ee0 MM |
820 | error_code = -EINVAL; |
821 | } | |
894ac432 | 822 | |
8bb8aefd YL |
823 | /* Convert ORANGEFS encoded errno values into regular errno values. */ |
824 | } else if ((-error_code) & ORANGEFS_ERROR_BIT) { | |
825 | i = (-error_code) & ~(ORANGEFS_ERROR_BIT|ORANGEFS_ERROR_CLASS_BITS); | |
54804949 | 826 | if (i < sizeof(PINT_errno_mapping)/sizeof(*PINT_errno_mapping)) |
894ac432 MB |
827 | error_code = -PINT_errno_mapping[i]; |
828 | else | |
829 | error_code = -EINVAL; | |
830 | ||
54804949 | 831 | /* |
8bb8aefd | 832 | * Only ORANGEFS protocol error codes should ever come here. Otherwise |
54804949 MM |
833 | * there is a bug somewhere. |
834 | */ | |
894ac432 | 835 | } else { |
8bb8aefd | 836 | gossip_err("orangefs: orangefs_normalize_to_errno: got error code which is not from ORANGEFS.\n"); |
f7be4ee0 MM |
837 | } |
838 | return error_code; | |
839 | } | |
840 | ||
841 | #define NUM_MODES 11 | |
8bb8aefd | 842 | __s32 ORANGEFS_util_translate_mode(int mode) |
f7be4ee0 MM |
843 | { |
844 | int ret = 0; | |
845 | int i = 0; | |
846 | static int modes[NUM_MODES] = { | |
847 | S_IXOTH, S_IWOTH, S_IROTH, | |
848 | S_IXGRP, S_IWGRP, S_IRGRP, | |
849 | S_IXUSR, S_IWUSR, S_IRUSR, | |
850 | S_ISGID, S_ISUID | |
851 | }; | |
8bb8aefd YL |
852 | static int orangefs_modes[NUM_MODES] = { |
853 | ORANGEFS_O_EXECUTE, ORANGEFS_O_WRITE, ORANGEFS_O_READ, | |
854 | ORANGEFS_G_EXECUTE, ORANGEFS_G_WRITE, ORANGEFS_G_READ, | |
855 | ORANGEFS_U_EXECUTE, ORANGEFS_U_WRITE, ORANGEFS_U_READ, | |
856 | ORANGEFS_G_SGID, ORANGEFS_U_SUID | |
f7be4ee0 MM |
857 | }; |
858 | ||
859 | for (i = 0; i < NUM_MODES; i++) | |
860 | if (mode & modes[i]) | |
8bb8aefd | 861 | ret |= orangefs_modes[i]; |
f7be4ee0 MM |
862 | |
863 | return ret; | |
864 | } | |
865 | #undef NUM_MODES | |
866 | ||
867 | /* | |
868 | * After obtaining a string representation of the client's debug | |
869 | * keywords and their associated masks, this function is called to build an | |
870 | * array of these values. | |
871 | */ | |
872 | int orangefs_prepare_cdm_array(char *debug_array_string) | |
873 | { | |
874 | int i; | |
875 | int rc = -EINVAL; | |
876 | char *cds_head = NULL; | |
877 | char *cds_delimiter = NULL; | |
878 | int keyword_len = 0; | |
879 | ||
880 | gossip_debug(GOSSIP_UTILS_DEBUG, "%s: start\n", __func__); | |
881 | ||
882 | /* | |
883 | * figure out how many elements the cdm_array needs. | |
884 | */ | |
885 | for (i = 0; i < strlen(debug_array_string); i++) | |
886 | if (debug_array_string[i] == '\n') | |
887 | cdm_element_count++; | |
888 | ||
889 | if (!cdm_element_count) { | |
890 | pr_info("No elements in client debug array string!\n"); | |
891 | goto out; | |
892 | } | |
893 | ||
894 | cdm_array = | |
895 | kzalloc(cdm_element_count * sizeof(struct client_debug_mask), | |
896 | GFP_KERNEL); | |
897 | if (!cdm_array) { | |
898 | pr_info("malloc failed for cdm_array!\n"); | |
899 | rc = -ENOMEM; | |
900 | goto out; | |
901 | } | |
902 | ||
903 | cds_head = debug_array_string; | |
904 | ||
905 | for (i = 0; i < cdm_element_count; i++) { | |
906 | cds_delimiter = strchr(cds_head, '\n'); | |
907 | *cds_delimiter = '\0'; | |
908 | ||
909 | keyword_len = strcspn(cds_head, " "); | |
910 | ||
911 | cdm_array[i].keyword = kzalloc(keyword_len + 1, GFP_KERNEL); | |
912 | if (!cdm_array[i].keyword) { | |
913 | rc = -ENOMEM; | |
914 | goto out; | |
915 | } | |
916 | ||
917 | sscanf(cds_head, | |
918 | "%s %llx %llx", | |
919 | cdm_array[i].keyword, | |
920 | (unsigned long long *)&(cdm_array[i].mask1), | |
921 | (unsigned long long *)&(cdm_array[i].mask2)); | |
922 | ||
8bb8aefd | 923 | if (!strcmp(cdm_array[i].keyword, ORANGEFS_VERBOSE)) |
f7be4ee0 MM |
924 | client_verbose_index = i; |
925 | ||
8bb8aefd | 926 | if (!strcmp(cdm_array[i].keyword, ORANGEFS_ALL)) |
f7be4ee0 MM |
927 | client_all_index = i; |
928 | ||
929 | cds_head = cds_delimiter + 1; | |
930 | } | |
931 | ||
932 | rc = cdm_element_count; | |
933 | ||
934 | gossip_debug(GOSSIP_UTILS_DEBUG, "%s: rc:%d:\n", __func__, rc); | |
935 | ||
936 | out: | |
937 | ||
938 | return rc; | |
939 | ||
940 | } | |
941 | ||
942 | /* | |
943 | * /sys/kernel/debug/orangefs/debug-help can be catted to | |
944 | * see all the available kernel and client debug keywords. | |
945 | * | |
946 | * When the kernel boots, we have no idea what keywords the | |
947 | * client supports, nor their associated masks. | |
948 | * | |
949 | * We pass through this function once at boot and stamp a | |
950 | * boilerplate "we don't know" message for the client in the | |
951 | * debug-help file. We pass through here again when the client | |
952 | * starts and then we can fill out the debug-help file fully. | |
953 | * | |
954 | * The client might be restarted any number of times between | |
955 | * reboots, we only build the debug-help file the first time. | |
956 | */ | |
957 | int orangefs_prepare_debugfs_help_string(int at_boot) | |
958 | { | |
959 | int rc = -EINVAL; | |
960 | int i; | |
961 | int byte_count = 0; | |
962 | char *client_title = "Client Debug Keywords:\n"; | |
963 | char *kernel_title = "Kernel Debug Keywords:\n"; | |
964 | ||
965 | gossip_debug(GOSSIP_UTILS_DEBUG, "%s: start\n", __func__); | |
966 | ||
967 | if (at_boot) { | |
968 | byte_count += strlen(HELP_STRING_UNINITIALIZED); | |
969 | client_title = HELP_STRING_UNINITIALIZED; | |
970 | } else { | |
971 | /* | |
972 | * fill the client keyword/mask array and remember | |
973 | * how many elements there were. | |
974 | */ | |
975 | cdm_element_count = | |
976 | orangefs_prepare_cdm_array(client_debug_array_string); | |
977 | if (cdm_element_count <= 0) | |
978 | goto out; | |
979 | ||
980 | /* Count the bytes destined for debug_help_string. */ | |
981 | byte_count += strlen(client_title); | |
982 | ||
983 | for (i = 0; i < cdm_element_count; i++) { | |
984 | byte_count += strlen(cdm_array[i].keyword + 2); | |
985 | if (byte_count >= DEBUG_HELP_STRING_SIZE) { | |
986 | pr_info("%s: overflow 1!\n", __func__); | |
987 | goto out; | |
988 | } | |
989 | } | |
990 | ||
991 | gossip_debug(GOSSIP_UTILS_DEBUG, | |
992 | "%s: cdm_element_count:%d:\n", | |
993 | __func__, | |
994 | cdm_element_count); | |
995 | } | |
996 | ||
997 | byte_count += strlen(kernel_title); | |
998 | for (i = 0; i < num_kmod_keyword_mask_map; i++) { | |
999 | byte_count += | |
1000 | strlen(s_kmod_keyword_mask_map[i].keyword + 2); | |
1001 | if (byte_count >= DEBUG_HELP_STRING_SIZE) { | |
1002 | pr_info("%s: overflow 2!\n", __func__); | |
1003 | goto out; | |
1004 | } | |
1005 | } | |
1006 | ||
1007 | /* build debug_help_string. */ | |
1008 | debug_help_string = kzalloc(DEBUG_HELP_STRING_SIZE, GFP_KERNEL); | |
1009 | if (!debug_help_string) { | |
1010 | rc = -ENOMEM; | |
1011 | goto out; | |
1012 | } | |
1013 | ||
1014 | strcat(debug_help_string, client_title); | |
1015 | ||
1016 | if (!at_boot) { | |
1017 | for (i = 0; i < cdm_element_count; i++) { | |
1018 | strcat(debug_help_string, "\t"); | |
1019 | strcat(debug_help_string, cdm_array[i].keyword); | |
1020 | strcat(debug_help_string, "\n"); | |
1021 | } | |
1022 | } | |
1023 | ||
1024 | strcat(debug_help_string, "\n"); | |
1025 | strcat(debug_help_string, kernel_title); | |
1026 | ||
1027 | for (i = 0; i < num_kmod_keyword_mask_map; i++) { | |
1028 | strcat(debug_help_string, "\t"); | |
1029 | strcat(debug_help_string, s_kmod_keyword_mask_map[i].keyword); | |
1030 | strcat(debug_help_string, "\n"); | |
1031 | } | |
1032 | ||
1033 | rc = 0; | |
1034 | ||
1035 | out: | |
1036 | ||
1037 | return rc; | |
1038 | ||
1039 | } | |
1040 | ||
1041 | /* | |
1042 | * kernel = type 0 | |
1043 | * client = type 1 | |
1044 | */ | |
1045 | void debug_mask_to_string(void *mask, int type) | |
1046 | { | |
1047 | int i; | |
1048 | int len = 0; | |
1049 | char *debug_string; | |
1050 | int element_count = 0; | |
1051 | ||
1052 | gossip_debug(GOSSIP_UTILS_DEBUG, "%s: start\n", __func__); | |
1053 | ||
1054 | if (type) { | |
1055 | debug_string = client_debug_string; | |
1056 | element_count = cdm_element_count; | |
1057 | } else { | |
1058 | debug_string = kernel_debug_string; | |
1059 | element_count = num_kmod_keyword_mask_map; | |
1060 | } | |
1061 | ||
8bb8aefd | 1062 | memset(debug_string, 0, ORANGEFS_MAX_DEBUG_STRING_LEN); |
f7be4ee0 MM |
1063 | |
1064 | /* | |
1065 | * Some keywords, like "all" or "verbose", are amalgams of | |
1066 | * numerous other keywords. Make a special check for those | |
1067 | * before grinding through the whole mask only to find out | |
1068 | * later... | |
1069 | */ | |
1070 | if (check_amalgam_keyword(mask, type)) | |
1071 | goto out; | |
1072 | ||
1073 | /* Build the debug string. */ | |
1074 | for (i = 0; i < element_count; i++) | |
1075 | if (type) | |
1076 | do_c_string(mask, i); | |
1077 | else | |
1078 | do_k_string(mask, i); | |
1079 | ||
1080 | len = strlen(debug_string); | |
1081 | ||
1082 | if ((len) && (type)) | |
1083 | client_debug_string[len - 1] = '\0'; | |
1084 | else if (len) | |
1085 | kernel_debug_string[len - 1] = '\0'; | |
1086 | else if (type) | |
1087 | strcpy(client_debug_string, "none"); | |
1088 | else | |
1089 | strcpy(kernel_debug_string, "none"); | |
1090 | ||
1091 | out: | |
1092 | gossip_debug(GOSSIP_UTILS_DEBUG, "%s: string:%s:\n", __func__, debug_string); | |
1093 | ||
1094 | return; | |
1095 | ||
1096 | } | |
1097 | ||
1098 | void do_k_string(void *k_mask, int index) | |
1099 | { | |
1100 | __u64 *mask = (__u64 *) k_mask; | |
1101 | ||
1102 | if (keyword_is_amalgam((char *) s_kmod_keyword_mask_map[index].keyword)) | |
54804949 | 1103 | goto out; |
f7be4ee0 MM |
1104 | |
1105 | if (*mask & s_kmod_keyword_mask_map[index].mask_val) { | |
1106 | if ((strlen(kernel_debug_string) + | |
1107 | strlen(s_kmod_keyword_mask_map[index].keyword)) | |
8bb8aefd | 1108 | < ORANGEFS_MAX_DEBUG_STRING_LEN - 1) { |
f7be4ee0 MM |
1109 | strcat(kernel_debug_string, |
1110 | s_kmod_keyword_mask_map[index].keyword); | |
1111 | strcat(kernel_debug_string, ","); | |
1112 | } else { | |
1113 | gossip_err("%s: overflow!\n", __func__); | |
8bb8aefd | 1114 | strcpy(kernel_debug_string, ORANGEFS_ALL); |
f7be4ee0 MM |
1115 | goto out; |
1116 | } | |
1117 | } | |
1118 | ||
1119 | out: | |
1120 | ||
1121 | return; | |
1122 | } | |
1123 | ||
1124 | void do_c_string(void *c_mask, int index) | |
1125 | { | |
1126 | struct client_debug_mask *mask = (struct client_debug_mask *) c_mask; | |
1127 | ||
1128 | if (keyword_is_amalgam(cdm_array[index].keyword)) | |
1129 | goto out; | |
1130 | ||
1131 | if ((mask->mask1 & cdm_array[index].mask1) || | |
1132 | (mask->mask2 & cdm_array[index].mask2)) { | |
1133 | if ((strlen(client_debug_string) + | |
1134 | strlen(cdm_array[index].keyword) + 1) | |
8bb8aefd | 1135 | < ORANGEFS_MAX_DEBUG_STRING_LEN - 2) { |
f7be4ee0 MM |
1136 | strcat(client_debug_string, |
1137 | cdm_array[index].keyword); | |
1138 | strcat(client_debug_string, ","); | |
1139 | } else { | |
1140 | gossip_err("%s: overflow!\n", __func__); | |
8bb8aefd | 1141 | strcpy(client_debug_string, ORANGEFS_ALL); |
f7be4ee0 MM |
1142 | goto out; |
1143 | } | |
1144 | } | |
1145 | out: | |
1146 | return; | |
1147 | } | |
1148 | ||
1149 | int keyword_is_amalgam(char *keyword) | |
1150 | { | |
1151 | int rc = 0; | |
1152 | ||
8bb8aefd | 1153 | if ((!strcmp(keyword, ORANGEFS_ALL)) || (!strcmp(keyword, ORANGEFS_VERBOSE))) |
f7be4ee0 MM |
1154 | rc = 1; |
1155 | ||
1156 | return rc; | |
1157 | } | |
1158 | ||
1159 | /* | |
1160 | * kernel = type 0 | |
1161 | * client = type 1 | |
1162 | * | |
1163 | * return 1 if we found an amalgam. | |
1164 | */ | |
1165 | int check_amalgam_keyword(void *mask, int type) | |
1166 | { | |
1167 | __u64 *k_mask; | |
1168 | struct client_debug_mask *c_mask; | |
1169 | int k_all_index = num_kmod_keyword_mask_map - 1; | |
1170 | int rc = 0; | |
1171 | ||
1172 | if (type) { | |
1173 | c_mask = (struct client_debug_mask *) mask; | |
1174 | ||
1175 | if ((c_mask->mask1 == cdm_array[client_all_index].mask1) && | |
1176 | (c_mask->mask2 == cdm_array[client_all_index].mask2)) { | |
8bb8aefd | 1177 | strcpy(client_debug_string, ORANGEFS_ALL); |
f7be4ee0 MM |
1178 | rc = 1; |
1179 | goto out; | |
1180 | } | |
1181 | ||
1182 | if ((c_mask->mask1 == cdm_array[client_verbose_index].mask1) && | |
1183 | (c_mask->mask2 == cdm_array[client_verbose_index].mask2)) { | |
8bb8aefd | 1184 | strcpy(client_debug_string, ORANGEFS_VERBOSE); |
f7be4ee0 MM |
1185 | rc = 1; |
1186 | goto out; | |
1187 | } | |
1188 | ||
1189 | } else { | |
1190 | k_mask = (__u64 *) mask; | |
1191 | ||
1192 | if (*k_mask >= s_kmod_keyword_mask_map[k_all_index].mask_val) { | |
8bb8aefd | 1193 | strcpy(kernel_debug_string, ORANGEFS_ALL); |
f7be4ee0 MM |
1194 | rc = 1; |
1195 | goto out; | |
1196 | } | |
1197 | } | |
1198 | ||
1199 | out: | |
1200 | ||
1201 | return rc; | |
1202 | } | |
1203 | ||
1204 | /* | |
1205 | * kernel = type 0 | |
1206 | * client = type 1 | |
1207 | */ | |
1208 | void debug_string_to_mask(char *debug_string, void *mask, int type) | |
1209 | { | |
1210 | char *unchecked_keyword; | |
1211 | int i; | |
1212 | char *strsep_fodder = kstrdup(debug_string, GFP_KERNEL); | |
eeaa3d44 | 1213 | char *original_pointer; |
f7be4ee0 MM |
1214 | int element_count = 0; |
1215 | struct client_debug_mask *c_mask; | |
1216 | __u64 *k_mask; | |
1217 | ||
1218 | gossip_debug(GOSSIP_UTILS_DEBUG, "%s: start\n", __func__); | |
1219 | ||
1220 | if (type) { | |
1221 | c_mask = (struct client_debug_mask *)mask; | |
1222 | element_count = cdm_element_count; | |
1223 | } else { | |
1224 | k_mask = (__u64 *)mask; | |
1225 | *k_mask = 0; | |
1226 | element_count = num_kmod_keyword_mask_map; | |
1227 | } | |
1228 | ||
eeaa3d44 | 1229 | original_pointer = strsep_fodder; |
f7be4ee0 MM |
1230 | while ((unchecked_keyword = strsep(&strsep_fodder, ","))) |
1231 | if (strlen(unchecked_keyword)) { | |
1232 | for (i = 0; i < element_count; i++) | |
1233 | if (type) | |
1234 | do_c_mask(i, | |
1235 | unchecked_keyword, | |
1236 | &c_mask); | |
1237 | else | |
1238 | do_k_mask(i, | |
1239 | unchecked_keyword, | |
1240 | &k_mask); | |
1241 | } | |
1242 | ||
eeaa3d44 | 1243 | kfree(original_pointer); |
f7be4ee0 MM |
1244 | } |
1245 | ||
1246 | void do_c_mask(int i, | |
1247 | char *unchecked_keyword, | |
1248 | struct client_debug_mask **sane_mask) | |
1249 | { | |
1250 | ||
1251 | if (!strcmp(cdm_array[i].keyword, unchecked_keyword)) { | |
1252 | (**sane_mask).mask1 = (**sane_mask).mask1 | cdm_array[i].mask1; | |
1253 | (**sane_mask).mask2 = (**sane_mask).mask2 | cdm_array[i].mask2; | |
1254 | } | |
1255 | } | |
1256 | ||
1257 | void do_k_mask(int i, char *unchecked_keyword, __u64 **sane_mask) | |
1258 | { | |
1259 | ||
1260 | if (!strcmp(s_kmod_keyword_mask_map[i].keyword, unchecked_keyword)) | |
1261 | **sane_mask = (**sane_mask) | | |
1262 | s_kmod_keyword_mask_map[i].mask_val; | |
1263 | } |