Hyojun Kim | 6c6bb35 | 2017-10-30 23:21:09 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Implementation of new quotafile format |
| 3 | * |
| 4 | * Jan Kara <jack@suse.cz> - sponsored by SuSE CR |
| 5 | * Hyojun Kim <hyojun@google.com> - Ported to f2fs-tools |
| 6 | */ |
| 7 | |
Hyojun Kim | 6c6bb35 | 2017-10-30 23:21:09 +0000 | [diff] [blame] | 8 | #include <sys/types.h> |
| 9 | #include <errno.h> |
| 10 | #include <stdio.h> |
| 11 | #include <stdlib.h> |
| 12 | #include <string.h> |
| 13 | #include <unistd.h> |
| 14 | |
| 15 | #include "common.h" |
| 16 | |
| 17 | #include "quotaio_v2.h" |
| 18 | #include "dqblk_v2.h" |
| 19 | #include "quotaio_tree.h" |
| 20 | |
| 21 | static int v2_check_file(struct quota_handle *h, int type); |
Robin Hsu | e66e4c1 | 2020-02-05 15:41:57 +0800 | [diff] [blame] | 22 | static int v2_init_io(struct quota_handle *h, enum quota_type qtype); |
Hyojun Kim | 6c6bb35 | 2017-10-30 23:21:09 +0000 | [diff] [blame] | 23 | static int v2_new_io(struct quota_handle *h); |
| 24 | static int v2_write_info(struct quota_handle *h); |
| 25 | static struct dquot *v2_read_dquot(struct quota_handle *h, qid_t id); |
| 26 | static int v2_commit_dquot(struct dquot *dquot); |
| 27 | static int v2_scan_dquots(struct quota_handle *h, |
| 28 | int (*process_dquot) (struct dquot *dquot, |
| 29 | void *data), |
| 30 | void *data); |
| 31 | static int v2_report(struct quota_handle *h, int verbose); |
| 32 | |
| 33 | struct quotafile_ops quotafile_ops_2 = { |
| 34 | .check_file = v2_check_file, |
| 35 | .init_io = v2_init_io, |
| 36 | .new_io = v2_new_io, |
| 37 | .write_info = v2_write_info, |
| 38 | .read_dquot = v2_read_dquot, |
| 39 | .commit_dquot = v2_commit_dquot, |
| 40 | .scan_dquots = v2_scan_dquots, |
| 41 | .report = v2_report, |
| 42 | }; |
| 43 | |
| 44 | /* |
| 45 | * Copy dquot from disk to memory |
| 46 | */ |
| 47 | static void v2r1_disk2memdqblk(struct dquot *dquot, void *dp) |
| 48 | { |
| 49 | struct util_dqblk *m = &dquot->dq_dqb; |
| 50 | struct v2r1_disk_dqblk *d = dp, empty; |
| 51 | |
| 52 | dquot->dq_id = le32_to_cpu(d->dqb_id); |
| 53 | m->dqb_ihardlimit = le64_to_cpu(d->dqb_ihardlimit); |
| 54 | m->dqb_isoftlimit = le64_to_cpu(d->dqb_isoftlimit); |
| 55 | m->dqb_bhardlimit = le64_to_cpu(d->dqb_bhardlimit); |
| 56 | m->dqb_bsoftlimit = le64_to_cpu(d->dqb_bsoftlimit); |
| 57 | m->dqb_curinodes = le64_to_cpu(d->dqb_curinodes); |
| 58 | m->dqb_curspace = le64_to_cpu(d->dqb_curspace); |
| 59 | m->dqb_itime = le64_to_cpu(d->dqb_itime); |
| 60 | m->dqb_btime = le64_to_cpu(d->dqb_btime); |
| 61 | |
| 62 | memset(&empty, 0, sizeof(struct v2r1_disk_dqblk)); |
| 63 | empty.dqb_itime = cpu_to_le64(1); |
| 64 | if (!memcmp(&empty, dp, sizeof(struct v2r1_disk_dqblk))) |
| 65 | m->dqb_itime = 0; |
| 66 | } |
| 67 | |
| 68 | /* |
| 69 | * Copy dquot from memory to disk |
| 70 | */ |
| 71 | static void v2r1_mem2diskdqblk(void *dp, struct dquot *dquot) |
| 72 | { |
| 73 | struct util_dqblk *m = &dquot->dq_dqb; |
| 74 | struct v2r1_disk_dqblk *d = dp; |
| 75 | |
| 76 | d->dqb_ihardlimit = cpu_to_le64(m->dqb_ihardlimit); |
| 77 | d->dqb_isoftlimit = cpu_to_le64(m->dqb_isoftlimit); |
| 78 | d->dqb_bhardlimit = cpu_to_le64(m->dqb_bhardlimit); |
| 79 | d->dqb_bsoftlimit = cpu_to_le64(m->dqb_bsoftlimit); |
| 80 | d->dqb_curinodes = cpu_to_le64(m->dqb_curinodes); |
| 81 | d->dqb_curspace = cpu_to_le64(m->dqb_curspace); |
| 82 | d->dqb_itime = cpu_to_le64(m->dqb_itime); |
| 83 | d->dqb_btime = cpu_to_le64(m->dqb_btime); |
| 84 | d->dqb_id = cpu_to_le32(dquot->dq_id); |
| 85 | if (qtree_entry_unused(&dquot->dq_h->qh_info.u.v2_mdqi.dqi_qtree, dp)) |
| 86 | d->dqb_itime = cpu_to_le64(1); |
| 87 | } |
| 88 | |
| 89 | static int v2r1_is_id(void *dp, struct dquot *dquot) |
| 90 | { |
| 91 | struct v2r1_disk_dqblk *d = dp; |
| 92 | struct qtree_mem_dqinfo *info = |
| 93 | &dquot->dq_h->qh_info.u.v2_mdqi.dqi_qtree; |
| 94 | |
| 95 | if (qtree_entry_unused(info, dp)) |
| 96 | return 0; |
| 97 | return le32_to_cpu(d->dqb_id) == dquot->dq_id; |
| 98 | } |
| 99 | |
| 100 | static struct qtree_fmt_operations v2r1_fmt_ops = { |
| 101 | .mem2disk_dqblk = v2r1_mem2diskdqblk, |
| 102 | .disk2mem_dqblk = v2r1_disk2memdqblk, |
| 103 | .is_id = v2r1_is_id, |
| 104 | }; |
| 105 | |
| 106 | /* |
| 107 | * Copy dqinfo from disk to memory |
| 108 | */ |
| 109 | static inline void v2_disk2memdqinfo(struct util_dqinfo *m, |
| 110 | struct v2_disk_dqinfo *d) |
| 111 | { |
| 112 | m->dqi_bgrace = le32_to_cpu(d->dqi_bgrace); |
| 113 | m->dqi_igrace = le32_to_cpu(d->dqi_igrace); |
| 114 | m->u.v2_mdqi.dqi_flags = le32_to_cpu(d->dqi_flags) & V2_DQF_MASK; |
| 115 | m->u.v2_mdqi.dqi_qtree.dqi_blocks = le32_to_cpu(d->dqi_blocks); |
| 116 | m->u.v2_mdqi.dqi_qtree.dqi_free_blk = |
| 117 | le32_to_cpu(d->dqi_free_blk); |
| 118 | m->u.v2_mdqi.dqi_qtree.dqi_free_entry = |
| 119 | le32_to_cpu(d->dqi_free_entry); |
| 120 | } |
| 121 | |
| 122 | /* |
| 123 | * Copy dqinfo from memory to disk |
| 124 | */ |
| 125 | static inline void v2_mem2diskdqinfo(struct v2_disk_dqinfo *d, |
| 126 | struct util_dqinfo *m) |
| 127 | { |
| 128 | d->dqi_bgrace = cpu_to_le32(m->dqi_bgrace); |
| 129 | d->dqi_igrace = cpu_to_le32(m->dqi_igrace); |
| 130 | d->dqi_flags = cpu_to_le32(m->u.v2_mdqi.dqi_flags & V2_DQF_MASK); |
| 131 | d->dqi_blocks = cpu_to_le32(m->u.v2_mdqi.dqi_qtree.dqi_blocks); |
| 132 | d->dqi_free_blk = |
| 133 | cpu_to_le32(m->u.v2_mdqi.dqi_qtree.dqi_free_blk); |
| 134 | d->dqi_free_entry = |
| 135 | cpu_to_le32(m->u.v2_mdqi.dqi_qtree.dqi_free_entry); |
| 136 | } |
| 137 | |
| 138 | static int v2_read_header(struct quota_handle *h, struct v2_disk_dqheader *dqh) |
| 139 | { |
| 140 | if (h->read(&h->qh_qf, 0, dqh, sizeof(struct v2_disk_dqheader)) != |
| 141 | sizeof(struct v2_disk_dqheader)) |
| 142 | return 0; |
| 143 | |
| 144 | return 1; |
| 145 | } |
| 146 | |
| 147 | /* |
| 148 | * Check whether given quota file is in our format |
| 149 | */ |
| 150 | static int v2_check_file(struct quota_handle *h, int type) |
| 151 | { |
| 152 | struct v2_disk_dqheader dqh; |
| 153 | int file_magics[] = INITQMAGICS; |
| 154 | int be_magic; |
| 155 | |
| 156 | if (!v2_read_header(h, &dqh)) |
| 157 | return 0; |
| 158 | |
| 159 | be_magic = be32_to_cpu((__force __be32)dqh.dqh_magic); |
| 160 | if (be_magic == file_magics[type]) { |
| 161 | log_err("Your quota file is stored in wrong endianity"); |
| 162 | return 0; |
| 163 | } |
| 164 | if (V2_VERSION != le32_to_cpu(dqh.dqh_version)) |
| 165 | return 0; |
| 166 | return 1; |
| 167 | } |
| 168 | |
| 169 | /* |
| 170 | * Open quotafile |
| 171 | */ |
Robin Hsu | e66e4c1 | 2020-02-05 15:41:57 +0800 | [diff] [blame] | 172 | static int v2_init_io(struct quota_handle *h, enum quota_type qtype) |
Hyojun Kim | 6c6bb35 | 2017-10-30 23:21:09 +0000 | [diff] [blame] | 173 | { |
| 174 | struct v2_disk_dqinfo ddqinfo; |
Robin Hsu | e66e4c1 | 2020-02-05 15:41:57 +0800 | [diff] [blame] | 175 | struct v2_mem_dqinfo *info; |
| 176 | u64 filesize; |
| 177 | struct quota_file *qf = &h->qh_qf; |
| 178 | u32 last_blkofs = qf_last_blkofs[qtype]; |
Hyojun Kim | 6c6bb35 | 2017-10-30 23:21:09 +0000 | [diff] [blame] | 179 | |
| 180 | h->qh_info.u.v2_mdqi.dqi_qtree.dqi_entry_size = |
| 181 | sizeof(struct v2r1_disk_dqblk); |
| 182 | h->qh_info.u.v2_mdqi.dqi_qtree.dqi_ops = &v2r1_fmt_ops; |
| 183 | |
| 184 | /* Read information about quotafile */ |
Robin Hsu | e66e4c1 | 2020-02-05 15:41:57 +0800 | [diff] [blame] | 185 | if (h->read(qf, V2_DQINFOOFF, &ddqinfo, |
| 186 | sizeof(ddqinfo)) != sizeof(ddqinfo)) |
Hyojun Kim | 6c6bb35 | 2017-10-30 23:21:09 +0000 | [diff] [blame] | 187 | return -1; |
| 188 | v2_disk2memdqinfo(&h->qh_info, &ddqinfo); |
Robin Hsu | e66e4c1 | 2020-02-05 15:41:57 +0800 | [diff] [blame] | 189 | |
| 190 | /* Check to make sure quota file info is sane */ |
| 191 | info = &h->qh_info.u.v2_mdqi; |
| 192 | filesize = qf->filesize = f2fs_quota_size(qf); |
| 193 | if (qf_szchk_type[qtype] == QF_SZCHK_REGFILE && |
| 194 | ((filesize + F2FS_BLKSIZE - 1) >> F2FS_BLKSIZE_BITS < |
| 195 | last_blkofs + 1 || filesize > qf_maxsize[qtype])) { |
| 196 | /* |
| 197 | * reqular: qf_szchk is now the last block index, |
| 198 | * including the hole's index |
| 199 | */ |
| 200 | log_err("Quota inode %u corrupted: file size %" PRIu64 |
| 201 | " does not match page offset %" PRIu32, |
| 202 | h->qh_qf.ino, |
| 203 | filesize, |
| 204 | last_blkofs); |
| 205 | filesize = (last_blkofs + 1) << F2FS_BLKSIZE_BITS; |
| 206 | f2fs_filesize_update(qf->sbi, qf->ino, filesize); |
| 207 | } |
| 208 | |
| 209 | if ((info->dqi_qtree.dqi_blocks > |
| 210 | (filesize + QT_BLKSIZE - 1) >> QT_BLKSIZE_BITS)) { |
| 211 | log_err("Quota inode %u corrupted: file size %" PRId64 "; " |
| 212 | "dqi_blocks %u", h->qh_qf.ino, |
| 213 | filesize, info->dqi_qtree.dqi_blocks); |
| 214 | return -1; |
| 215 | } |
| 216 | if (info->dqi_qtree.dqi_free_blk >= info->dqi_qtree.dqi_blocks) { |
| 217 | log_err("Quota inode %u corrupted: free_blk %u;" |
| 218 | " dqi_blocks %u", |
| 219 | h->qh_qf.ino, info->dqi_qtree.dqi_free_blk, |
| 220 | info->dqi_qtree.dqi_blocks); |
| 221 | return -1; |
| 222 | } |
| 223 | if (info->dqi_qtree.dqi_free_entry >= info->dqi_qtree.dqi_blocks) { |
| 224 | log_err("Quota inode %u corrupted: free_entry %u; " |
| 225 | "dqi_blocks %u", h->qh_qf.ino, |
| 226 | info->dqi_qtree.dqi_free_entry, |
| 227 | info->dqi_qtree.dqi_blocks); |
| 228 | return -1; |
| 229 | } |
Hyojun Kim | 6c6bb35 | 2017-10-30 23:21:09 +0000 | [diff] [blame] | 230 | return 0; |
| 231 | } |
| 232 | |
| 233 | /* |
| 234 | * Initialize new quotafile |
| 235 | */ |
| 236 | static int v2_new_io(struct quota_handle *h) |
| 237 | { |
| 238 | int file_magics[] = INITQMAGICS; |
| 239 | struct v2_disk_dqheader ddqheader; |
| 240 | struct v2_disk_dqinfo ddqinfo; |
| 241 | |
| 242 | if (h->qh_fmt != QFMT_VFS_V1) |
| 243 | return -1; |
| 244 | |
| 245 | /* Write basic quota header */ |
| 246 | ddqheader.dqh_magic = cpu_to_le32(file_magics[h->qh_type]); |
| 247 | ddqheader.dqh_version = cpu_to_le32(V2_VERSION); |
| 248 | if (h->write(&h->qh_qf, 0, &ddqheader, sizeof(ddqheader)) != |
| 249 | sizeof(ddqheader)) |
| 250 | return -1; |
| 251 | |
| 252 | /* Write information about quotafile */ |
| 253 | h->qh_info.dqi_bgrace = MAX_DQ_TIME; |
| 254 | h->qh_info.dqi_igrace = MAX_IQ_TIME; |
| 255 | h->qh_info.u.v2_mdqi.dqi_flags = 0; |
| 256 | h->qh_info.u.v2_mdqi.dqi_qtree.dqi_blocks = QT_TREEOFF + 1; |
| 257 | h->qh_info.u.v2_mdqi.dqi_qtree.dqi_free_blk = 0; |
| 258 | h->qh_info.u.v2_mdqi.dqi_qtree.dqi_free_entry = 0; |
| 259 | h->qh_info.u.v2_mdqi.dqi_qtree.dqi_entry_size = |
| 260 | sizeof(struct v2r1_disk_dqblk); |
| 261 | h->qh_info.u.v2_mdqi.dqi_qtree.dqi_ops = &v2r1_fmt_ops; |
| 262 | v2_mem2diskdqinfo(&ddqinfo, &h->qh_info); |
| 263 | if (h->write(&h->qh_qf, V2_DQINFOOFF, &ddqinfo, |
| 264 | sizeof(ddqinfo)) != |
| 265 | sizeof(ddqinfo)) |
| 266 | return -1; |
| 267 | |
| 268 | return 0; |
| 269 | } |
| 270 | |
| 271 | /* |
| 272 | * Write information (grace times to file) |
| 273 | */ |
| 274 | static int v2_write_info(struct quota_handle *h) |
| 275 | { |
| 276 | struct v2_disk_dqinfo ddqinfo; |
| 277 | |
| 278 | v2_mem2diskdqinfo(&ddqinfo, &h->qh_info); |
| 279 | if (h->write(&h->qh_qf, V2_DQINFOOFF, &ddqinfo, sizeof(ddqinfo)) != |
| 280 | sizeof(ddqinfo)) |
| 281 | return -1; |
| 282 | |
| 283 | return 0; |
| 284 | } |
| 285 | |
| 286 | /* |
| 287 | * Read dquot from disk |
| 288 | */ |
| 289 | static struct dquot *v2_read_dquot(struct quota_handle *h, qid_t id) |
| 290 | { |
| 291 | return qtree_read_dquot(h, id); |
| 292 | } |
| 293 | |
| 294 | /* |
| 295 | * Commit changes of dquot to disk - it might also mean deleting it when quota |
| 296 | * became fake one and user has no blocks. |
| 297 | * User can process use 'errno' to detect errstr. |
| 298 | */ |
| 299 | static int v2_commit_dquot(struct dquot *dquot) |
| 300 | { |
| 301 | struct util_dqblk *b = &dquot->dq_dqb; |
| 302 | |
| 303 | if (!b->dqb_curspace && !b->dqb_curinodes && !b->dqb_bsoftlimit && |
| 304 | !b->dqb_isoftlimit && !b->dqb_bhardlimit && !b->dqb_ihardlimit) |
| 305 | { |
| 306 | qtree_delete_dquot(dquot); |
| 307 | } else { |
Jaegeuk Kim | 83c6401 | 2018-09-30 18:16:38 -0700 | [diff] [blame] | 308 | return qtree_write_dquot(dquot); |
Hyojun Kim | 6c6bb35 | 2017-10-30 23:21:09 +0000 | [diff] [blame] | 309 | } |
| 310 | return 0; |
| 311 | } |
| 312 | |
| 313 | static int v2_scan_dquots(struct quota_handle *h, |
| 314 | int (*process_dquot) (struct dquot *, void *), |
| 315 | void *data) |
| 316 | { |
| 317 | return qtree_scan_dquots(h, process_dquot, data); |
| 318 | } |
| 319 | |
| 320 | /* Report information about quotafile. |
| 321 | * TODO: Not used right now, but we should be able to use this when we add |
| 322 | * support to debugfs to read quota files. |
| 323 | */ |
| 324 | static int v2_report(struct quota_handle *UNUSED(h), int UNUSED(verbose)) |
| 325 | { |
| 326 | log_err("Not Implemented."); |
| 327 | return -1; |
| 328 | } |