^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Trivial changes by Alan Cox to remove EHASHCOLLISION for compatibility
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Trivial Changes:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Rights granted to Hans Reiser to redistribute under other terms providing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * he accepts all liability including but not limited to patent, fitness
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * for purpose, and direct or indirect claims arising from failure to perform.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * NO WARRANTY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include "reiserfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "acl.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "xattr.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/quotaops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define INC_DIR_INODE_NLINK(i) if (i->i_nlink != 1) { inc_nlink(i); if (i->i_nlink >= REISERFS_LINK_MAX) set_nlink(i, 1); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define DEC_DIR_INODE_NLINK(i) if (i->i_nlink != 1) drop_nlink(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * directory item contains array of entry headers. This performs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * binary search through that array
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static int bin_search_in_dir_item(struct reiserfs_dir_entry *de, loff_t off)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct item_head *ih = de->de_ih;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct reiserfs_de_head *deh = de->de_deh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) int rbound, lbound, j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) lbound = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) rbound = ih_entry_count(ih) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) for (j = (rbound + lbound) / 2; lbound <= rbound;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) j = (rbound + lbound) / 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) if (off < deh_offset(deh + j)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) rbound = j - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) if (off > deh_offset(deh + j)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) lbound = j + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /* this is not name found, but matched third key component */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) de->de_entry_num = j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) return NAME_FOUND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) de->de_entry_num = lbound;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) return NAME_NOT_FOUND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * comment? maybe something like set de to point to what the path points to?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static inline void set_de_item_location(struct reiserfs_dir_entry *de,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct treepath *path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) de->de_bh = get_last_bh(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) de->de_ih = tp_item_head(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) de->de_deh = B_I_DEH(de->de_bh, de->de_ih);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) de->de_item_num = PATH_LAST_POSITION(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * de_bh, de_ih, de_deh (points to first element of array), de_item_num is set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) inline void set_de_name_and_namelen(struct reiserfs_dir_entry *de)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct reiserfs_de_head *deh = de->de_deh + de->de_entry_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) BUG_ON(de->de_entry_num >= ih_entry_count(de->de_ih));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) de->de_entrylen = entry_length(de->de_bh, de->de_ih, de->de_entry_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) de->de_namelen = de->de_entrylen - (de_with_sd(deh) ? SD_SIZE : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) de->de_name = ih_item_body(de->de_bh, de->de_ih) + deh_location(deh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) if (de->de_name[de->de_namelen - 1] == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) de->de_namelen = strlen(de->de_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) /* what entry points to */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static inline void set_de_object_key(struct reiserfs_dir_entry *de)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) BUG_ON(de->de_entry_num >= ih_entry_count(de->de_ih));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) de->de_dir_id = deh_dir_id(&de->de_deh[de->de_entry_num]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) de->de_objectid = deh_objectid(&de->de_deh[de->de_entry_num]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static inline void store_de_entry_key(struct reiserfs_dir_entry *de)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) struct reiserfs_de_head *deh = de->de_deh + de->de_entry_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) BUG_ON(de->de_entry_num >= ih_entry_count(de->de_ih));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) /* store key of the found entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) de->de_entry_key.version = KEY_FORMAT_3_5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) de->de_entry_key.on_disk_key.k_dir_id =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) le32_to_cpu(de->de_ih->ih_key.k_dir_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) de->de_entry_key.on_disk_key.k_objectid =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) le32_to_cpu(de->de_ih->ih_key.k_objectid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) set_cpu_key_k_offset(&de->de_entry_key, deh_offset(deh));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) set_cpu_key_k_type(&de->de_entry_key, TYPE_DIRENTRY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * We assign a key to each directory item, and place multiple entries in a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) * single directory item. A directory item has a key equal to the key of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) * the first directory entry in it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * This function first calls search_by_key, then, if item whose first entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * matches is not found it looks for the entry inside directory item found
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * by search_by_key. Fills the path to the entry, and to the entry position
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) * in the item
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /* The function is NOT SCHEDULE-SAFE! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) int search_by_entry_key(struct super_block *sb, const struct cpu_key *key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct treepath *path, struct reiserfs_dir_entry *de)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) retval = search_item(sb, key, path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) switch (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) case ITEM_NOT_FOUND:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) if (!PATH_LAST_POSITION(path)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) reiserfs_error(sb, "vs-7000", "search_by_key "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) "returned item position == 0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) pathrelse(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) return IO_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) PATH_LAST_POSITION(path)--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) case ITEM_FOUND:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) case IO_ERROR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) pathrelse(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) reiserfs_error(sb, "vs-7002", "no path to here");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) return IO_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) set_de_item_location(de, path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) #ifdef CONFIG_REISERFS_CHECK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) if (!is_direntry_le_ih(de->de_ih) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) COMP_SHORT_KEYS(&de->de_ih->ih_key, key)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) print_block(de->de_bh, 0, -1, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) reiserfs_panic(sb, "vs-7005", "found item %h is not directory "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) "item or does not belong to the same directory "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) "as key %K", de->de_ih, key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) #endif /* CONFIG_REISERFS_CHECK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) * binary search in directory item by third component of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) * key. sets de->de_entry_num of de
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) retval = bin_search_in_dir_item(de, cpu_key_k_offset(key));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) path->pos_in_item = de->de_entry_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) if (retval != NAME_NOT_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * ugly, but rename needs de_bh, de_deh, de_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * de_namelen, de_objectid set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) set_de_name_and_namelen(de);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) set_de_object_key(de);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) /* Keyed 32-bit hash function using TEA in a Davis-Meyer function */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) * The third component is hashed, and you can choose from more than
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) * one hash function. Per directory hashes are not yet implemented
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) * but are thought about. This function should be moved to hashes.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * Jedi, please do so. -Hans
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) static __u32 get_third_component(struct super_block *s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) const char *name, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) __u32 res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) if (!len || (len == 1 && name[0] == '.'))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) return DOT_OFFSET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) if (len == 2 && name[0] == '.' && name[1] == '.')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) return DOT_DOT_OFFSET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) res = REISERFS_SB(s)->s_hash_function(name, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) /* take bits from 7-th to 30-th including both bounds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) res = GET_HASH_VALUE(res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) if (res == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * needed to have no names before "." and ".." those have hash
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * value == 0 and generation conters 1 and 2 accordingly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) res = 128;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) return res + MAX_GENERATION_NUMBER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) static int reiserfs_match(struct reiserfs_dir_entry *de,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) const char *name, int namelen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) int retval = NAME_NOT_FOUND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) if ((namelen == de->de_namelen) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) !memcmp(de->de_name, name, de->de_namelen))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) (de_visible(de->de_deh + de->de_entry_num) ? NAME_FOUND :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) NAME_FOUND_INVISIBLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) /* de's de_bh, de_ih, de_deh, de_item_num, de_entry_num are set already */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) /* used when hash collisions exist */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) static int linear_search_in_dir_item(struct cpu_key *key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) struct reiserfs_dir_entry *de,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) const char *name, int namelen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) struct reiserfs_de_head *deh = de->de_deh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) i = de->de_entry_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) if (i == ih_entry_count(de->de_ih) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) GET_HASH_VALUE(deh_offset(deh + i)) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) GET_HASH_VALUE(cpu_key_k_offset(key))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) i--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) RFALSE(de->de_deh != B_I_DEH(de->de_bh, de->de_ih),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) "vs-7010: array of entry headers not found");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) deh += i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) for (; i >= 0; i--, deh--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) /* hash value does not match, no need to check whole name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) if (GET_HASH_VALUE(deh_offset(deh)) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) GET_HASH_VALUE(cpu_key_k_offset(key))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) return NAME_NOT_FOUND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) /* mark that this generation number is used */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) if (de->de_gen_number_bit_string)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) set_bit(GET_GENERATION_NUMBER(deh_offset(deh)),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) de->de_gen_number_bit_string);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) /* calculate pointer to name and namelen */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) de->de_entry_num = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) set_de_name_and_namelen(de);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) * de's de_name, de_namelen, de_recordlen are set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) * Fill the rest.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) if ((retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) reiserfs_match(de, name, namelen)) != NAME_NOT_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) /* key of pointed object */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) set_de_object_key(de);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) store_de_entry_key(de);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) /* retval can be NAME_FOUND or NAME_FOUND_INVISIBLE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) if (GET_GENERATION_NUMBER(le_ih_k_offset(de->de_ih)) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) * we have reached left most entry in the node. In common we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) * have to go to the left neighbor, but if generation counter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) * is 0 already, we know for sure, that there is no name with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) * the same hash value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) * FIXME: this work correctly only because hash value can not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) * be 0. Btw, in case of Yura's hash it is probably possible,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) * so, this is a bug
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) return NAME_NOT_FOUND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) RFALSE(de->de_item_num,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) "vs-7015: two diritems of the same directory in one node?");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) return GOTO_PREVIOUS_ITEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) * may return NAME_FOUND, NAME_FOUND_INVISIBLE, NAME_NOT_FOUND
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) * FIXME: should add something like IOERROR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) static int reiserfs_find_entry(struct inode *dir, const char *name, int namelen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) struct treepath *path_to_entry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) struct reiserfs_dir_entry *de)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) struct cpu_key key_to_search;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) if (namelen > REISERFS_MAX_NAME(dir->i_sb->s_blocksize))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) return NAME_NOT_FOUND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) /* we will search for this key in the tree */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) make_cpu_key(&key_to_search, dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) get_third_component(dir->i_sb, name, namelen),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) TYPE_DIRENTRY, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) while (1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) search_by_entry_key(dir->i_sb, &key_to_search,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) path_to_entry, de);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) if (retval == IO_ERROR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) reiserfs_error(dir->i_sb, "zam-7001", "io error");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) return IO_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) /* compare names for all entries having given hash value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) linear_search_in_dir_item(&key_to_search, de, name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) namelen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) * there is no need to scan directory anymore.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) * Given entry found or does not exist
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) if (retval != GOTO_PREVIOUS_ITEM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) path_to_entry->pos_in_item = de->de_entry_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) * there is left neighboring item of this directory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) * and given entry can be there
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) set_cpu_key_k_offset(&key_to_search,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) le_ih_k_offset(de->de_ih) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) pathrelse(path_to_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) } /* while (1) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) static struct dentry *reiserfs_lookup(struct inode *dir, struct dentry *dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) unsigned int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) struct inode *inode = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) struct reiserfs_dir_entry de;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) INITIALIZE_PATH(path_to_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) if (REISERFS_MAX_NAME(dir->i_sb->s_blocksize) < dentry->d_name.len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) return ERR_PTR(-ENAMETOOLONG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) reiserfs_write_lock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) de.de_gen_number_bit_string = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) reiserfs_find_entry(dir, dentry->d_name.name, dentry->d_name.len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) &path_to_entry, &de);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) pathrelse(&path_to_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) if (retval == NAME_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) inode = reiserfs_iget(dir->i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) (struct cpu_key *)&de.de_dir_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) if (!inode || IS_ERR(inode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) reiserfs_write_unlock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) return ERR_PTR(-EACCES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) * Propagate the private flag so we know we're
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) * in the priv tree. Also clear IOP_XATTR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) * since we don't have xattrs on xattr files.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) if (IS_PRIVATE(dir)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) inode->i_flags |= S_PRIVATE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) inode->i_opflags &= ~IOP_XATTR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) reiserfs_write_unlock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) if (retval == IO_ERROR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) return ERR_PTR(-EIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) return d_splice_alias(inode, dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) * looks up the dentry of the parent directory for child.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) * taken from ext2_get_parent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) struct dentry *reiserfs_get_parent(struct dentry *child)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) struct inode *inode = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) struct reiserfs_dir_entry de;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) INITIALIZE_PATH(path_to_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) struct inode *dir = d_inode(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) if (dir->i_nlink == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) return ERR_PTR(-ENOENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) de.de_gen_number_bit_string = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) reiserfs_write_lock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) retval = reiserfs_find_entry(dir, "..", 2, &path_to_entry, &de);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) pathrelse(&path_to_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) if (retval != NAME_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) reiserfs_write_unlock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) return ERR_PTR(-ENOENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) inode = reiserfs_iget(dir->i_sb, (struct cpu_key *)&de.de_dir_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) reiserfs_write_unlock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) return d_obtain_alias(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) /* add entry to the directory (entry can be hidden).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) insert definition of when hidden directories are used here -Hans
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) Does not mark dir inode dirty, do it after successesfull call to it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) static int reiserfs_add_entry(struct reiserfs_transaction_handle *th,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) struct inode *dir, const char *name, int namelen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) struct inode *inode, int visible)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) struct cpu_key entry_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) struct reiserfs_de_head *deh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) INITIALIZE_PATH(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) struct reiserfs_dir_entry de;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) DECLARE_BITMAP(bit_string, MAX_GENERATION_NUMBER + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) int gen_number;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) * 48 bytes now and we avoid kmalloc if we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) * create file with short name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) char small_buf[32 + DEH_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) char *buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) int buflen, paste_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) BUG_ON(!th->t_trans_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) /* cannot allow items to be added into a busy deleted directory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) if (!namelen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) if (namelen > REISERFS_MAX_NAME(dir->i_sb->s_blocksize))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) return -ENAMETOOLONG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) /* each entry has unique key. compose it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) make_cpu_key(&entry_key, dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) get_third_component(dir->i_sb, name, namelen),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) TYPE_DIRENTRY, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) /* get memory for composing the entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) buflen = DEH_SIZE + ROUND_UP(namelen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) if (buflen > sizeof(small_buf)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) buffer = kmalloc(buflen, GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) if (!buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) buffer = small_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) paste_size =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) (get_inode_sd_version(dir) ==
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) STAT_DATA_V1) ? (DEH_SIZE + namelen) : buflen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) * fill buffer : directory entry head, name[, dir objectid | ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) * stat data | ,stat data, dir objectid ]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) deh = (struct reiserfs_de_head *)buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) deh->deh_location = 0; /* JDM Endian safe if 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) put_deh_offset(deh, cpu_key_k_offset(&entry_key));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) deh->deh_state = 0; /* JDM Endian safe if 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) /* put key (ino analog) to de */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) /* safe: k_dir_id is le */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) deh->deh_dir_id = INODE_PKEY(inode)->k_dir_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) /* safe: k_objectid is le */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) deh->deh_objectid = INODE_PKEY(inode)->k_objectid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) /* copy name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) memcpy((char *)(deh + 1), name, namelen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) /* padd by 0s to the 4 byte boundary */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) padd_item((char *)(deh + 1), ROUND_UP(namelen), namelen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) * entry is ready to be pasted into tree, set 'visibility'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) * and 'stat data in entry' attributes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) mark_de_without_sd(deh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) visible ? mark_de_visible(deh) : mark_de_hidden(deh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) /* find the proper place for the new entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) memset(bit_string, 0, sizeof(bit_string));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) de.de_gen_number_bit_string = bit_string;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) retval = reiserfs_find_entry(dir, name, namelen, &path, &de);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) if (retval != NAME_NOT_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) if (buffer != small_buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) kfree(buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) pathrelse(&path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) if (retval == IO_ERROR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) if (retval != NAME_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) reiserfs_error(dir->i_sb, "zam-7002",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) "reiserfs_find_entry() returned "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) "unexpected value (%d)", retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) return -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) gen_number =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) find_first_zero_bit(bit_string,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) MAX_GENERATION_NUMBER + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) if (gen_number > MAX_GENERATION_NUMBER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) /* there is no free generation number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) reiserfs_warning(dir->i_sb, "reiserfs-7010",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) "Congratulations! we have got hash function "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) "screwed up");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) if (buffer != small_buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) kfree(buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) pathrelse(&path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) /* adjust offset of directory enrty */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) put_deh_offset(deh, SET_GENERATION_NUMBER(deh_offset(deh), gen_number));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) set_cpu_key_k_offset(&entry_key, deh_offset(deh));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) /* update max-hash-collisions counter in reiserfs_sb_info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) PROC_INFO_MAX(th->t_super, max_hash_collisions, gen_number);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) /* we need to re-search for the insertion point */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) if (gen_number != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) if (search_by_entry_key(dir->i_sb, &entry_key, &path, &de) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) NAME_NOT_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) reiserfs_warning(dir->i_sb, "vs-7032",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) "entry with this key (%K) already "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) "exists", &entry_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) if (buffer != small_buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) kfree(buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) pathrelse(&path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) /* perform the insertion of the entry that we have prepared */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) reiserfs_paste_into_item(th, &path, &entry_key, dir, buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) paste_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) if (buffer != small_buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) kfree(buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) reiserfs_check_path(&path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) dir->i_size += paste_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) dir->i_mtime = dir->i_ctime = current_time(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) if (!S_ISDIR(inode->i_mode) && visible)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) /* reiserfs_mkdir or reiserfs_rename will do that by itself */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) reiserfs_update_sd(th, dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) reiserfs_check_path(&path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) * quota utility function, call if you've had to abort after calling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) * new_inode_init, and have not called reiserfs_new_inode yet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) * This should only be called on inodes that do not have stat data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) * inserted into the tree yet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) static int drop_new_inode(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) dquot_drop(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) make_bad_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) inode->i_flags |= S_NOQUOTA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) iput(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) * utility function that does setup for reiserfs_new_inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) * dquot_initialize needs lots of credits so it's better to have it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) * outside of a transaction, so we had to pull some bits of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) * reiserfs_new_inode out into this func.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) static int new_inode_init(struct inode *inode, struct inode *dir, umode_t mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) * Make inode invalid - just in case we are going to drop it before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) * the initialization happens
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) INODE_PKEY(inode)->k_objectid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) * the quota init calls have to know who to charge the quota to, so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) * we have to set uid and gid here
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) inode_init_owner(inode, dir, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) return dquot_initialize(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) static int reiserfs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) bool excl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) struct inode *inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) * We need blocks for transaction + (user+group)*(quotas
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) * for new inode + update of quota for directory owner)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) int jbegin_count =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) JOURNAL_PER_BALANCE_CNT * 2 +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir->i_sb) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) struct reiserfs_transaction_handle th;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) struct reiserfs_security_handle security;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) retval = dquot_initialize(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) if (!(inode = new_inode(dir->i_sb))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) retval = new_inode_init(inode, dir, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) drop_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) jbegin_count += reiserfs_cache_default_acl(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) retval = reiserfs_security_init(dir, inode, &dentry->d_name, &security);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) if (retval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) drop_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) jbegin_count += retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) reiserfs_write_lock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) retval = journal_begin(&th, dir->i_sb, jbegin_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) drop_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) goto out_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) reiserfs_new_inode(&th, dir, mode, NULL, 0 /*i_size */ , dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) inode, &security);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) goto out_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) inode->i_op = &reiserfs_file_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) inode->i_fop = &reiserfs_file_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) inode->i_mapping->a_ops = &reiserfs_address_space_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) reiserfs_add_entry(&th, dir, dentry->d_name.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) dentry->d_name.len, inode, 1 /*visible */ );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) drop_nlink(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) reiserfs_update_sd(&th, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) err = journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) retval = err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) unlock_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) iput(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) goto out_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) reiserfs_update_inode_transaction(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) reiserfs_update_inode_transaction(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) d_instantiate_new(dentry, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) retval = journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) out_failed:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) reiserfs_write_unlock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) static int reiserfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) dev_t rdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) struct inode *inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) struct reiserfs_transaction_handle th;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) struct reiserfs_security_handle security;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) * We need blocks for transaction + (user+group)*(quotas
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) * for new inode + update of quota for directory owner)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) int jbegin_count =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) JOURNAL_PER_BALANCE_CNT * 3 +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir->i_sb) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) retval = dquot_initialize(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) if (!(inode = new_inode(dir->i_sb))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) retval = new_inode_init(inode, dir, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) drop_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) jbegin_count += reiserfs_cache_default_acl(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) retval = reiserfs_security_init(dir, inode, &dentry->d_name, &security);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) if (retval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) drop_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) jbegin_count += retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) reiserfs_write_lock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) retval = journal_begin(&th, dir->i_sb, jbegin_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) drop_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) goto out_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) reiserfs_new_inode(&th, dir, mode, NULL, 0 /*i_size */ , dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) inode, &security);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) goto out_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) inode->i_op = &reiserfs_special_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) init_special_inode(inode, inode->i_mode, rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) /* FIXME: needed for block and char devices only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) reiserfs_update_sd(&th, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) reiserfs_update_inode_transaction(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) reiserfs_update_inode_transaction(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) reiserfs_add_entry(&th, dir, dentry->d_name.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) dentry->d_name.len, inode, 1 /*visible */ );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) drop_nlink(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) reiserfs_update_sd(&th, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) err = journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) retval = err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) unlock_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) iput(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) goto out_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) d_instantiate_new(dentry, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) retval = journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) out_failed:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) reiserfs_write_unlock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) static int reiserfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) struct inode *inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) struct reiserfs_transaction_handle th;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) struct reiserfs_security_handle security;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) * We need blocks for transaction + (user+group)*(quotas
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) * for new inode + update of quota for directory owner)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) int jbegin_count =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) JOURNAL_PER_BALANCE_CNT * 3 +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir->i_sb) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) retval = dquot_initialize(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) #ifdef DISPLACE_NEW_PACKING_LOCALITIES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) * set flag that new packing locality created and new blocks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) * for the content of that directory are not displaced yet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) REISERFS_I(dir)->new_packing_locality = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) mode = S_IFDIR | mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) if (!(inode = new_inode(dir->i_sb))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) retval = new_inode_init(inode, dir, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) drop_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) jbegin_count += reiserfs_cache_default_acl(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) retval = reiserfs_security_init(dir, inode, &dentry->d_name, &security);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) if (retval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) drop_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) jbegin_count += retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) reiserfs_write_lock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) retval = journal_begin(&th, dir->i_sb, jbegin_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) drop_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) goto out_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) * inc the link count now, so another writer doesn't overflow
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) * it while we sleep later on.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) INC_DIR_INODE_NLINK(dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) retval = reiserfs_new_inode(&th, dir, mode, NULL /*symlink */,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) old_format_only(dir->i_sb) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) EMPTY_DIR_SIZE_V1 : EMPTY_DIR_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) dentry, inode, &security);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) DEC_DIR_INODE_NLINK(dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) goto out_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) reiserfs_update_inode_transaction(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) reiserfs_update_inode_transaction(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) inode->i_op = &reiserfs_dir_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) inode->i_fop = &reiserfs_dir_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) /* note, _this_ add_entry will not update dir's stat data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) reiserfs_add_entry(&th, dir, dentry->d_name.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) dentry->d_name.len, inode, 1 /*visible */ );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) clear_nlink(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) DEC_DIR_INODE_NLINK(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) reiserfs_update_sd(&th, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) err = journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) retval = err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) unlock_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) iput(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) goto out_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) /* the above add_entry did not update dir's stat data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) reiserfs_update_sd(&th, dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) d_instantiate_new(dentry, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) retval = journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) out_failed:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) reiserfs_write_unlock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) static inline int reiserfs_empty_dir(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) * we can cheat because an old format dir cannot have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) * EMPTY_DIR_SIZE, and a new format dir cannot have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) * EMPTY_DIR_SIZE_V1. So, if the inode is either size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) * regardless of disk format version, the directory is empty.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) if (inode->i_size != EMPTY_DIR_SIZE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) inode->i_size != EMPTY_DIR_SIZE_V1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) static int reiserfs_rmdir(struct inode *dir, struct dentry *dentry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) int retval, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) struct inode *inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) struct reiserfs_transaction_handle th;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) int jbegin_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) INITIALIZE_PATH(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) struct reiserfs_dir_entry de;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) * we will be doing 2 balancings and update 2 stat data, we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) * change quotas of the owner of the directory and of the owner
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) * of the parent directory. The quota structure is possibly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) * deleted only on last iput => outside of this transaction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) jbegin_count =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) JOURNAL_PER_BALANCE_CNT * 2 + 2 +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) 4 * REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) retval = dquot_initialize(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) reiserfs_write_lock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) retval = journal_begin(&th, dir->i_sb, jbegin_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) goto out_rmdir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) de.de_gen_number_bit_string = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) if ((retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) reiserfs_find_entry(dir, dentry->d_name.name, dentry->d_name.len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) &path, &de)) == NAME_NOT_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) retval = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) goto end_rmdir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) } else if (retval == IO_ERROR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) retval = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) goto end_rmdir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) inode = d_inode(dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) reiserfs_update_inode_transaction(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) reiserfs_update_inode_transaction(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) if (de.de_objectid != inode->i_ino) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) * FIXME: compare key of an object and a key found in the entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) retval = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) goto end_rmdir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) if (!reiserfs_empty_dir(inode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) retval = -ENOTEMPTY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) goto end_rmdir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) /* cut entry from dir directory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) retval = reiserfs_cut_from_item(&th, &path, &de.de_entry_key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) dir, NULL, /* page */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) 0 /*new file size - not used here */ );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) if (retval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) goto end_rmdir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) if (inode->i_nlink != 2 && inode->i_nlink != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) reiserfs_error(inode->i_sb, "reiserfs-7040",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) "empty directory has nlink != 2 (%d)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) inode->i_nlink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) clear_nlink(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) inode->i_ctime = dir->i_ctime = dir->i_mtime = current_time(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) reiserfs_update_sd(&th, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) DEC_DIR_INODE_NLINK(dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) dir->i_size -= (DEH_SIZE + de.de_entrylen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) reiserfs_update_sd(&th, dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) /* prevent empty directory from getting lost */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) add_save_link(&th, inode, 0 /* not truncate */ );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) retval = journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) reiserfs_check_path(&path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) out_rmdir:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) reiserfs_write_unlock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) end_rmdir:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) * we must release path, because we did not call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) * reiserfs_cut_from_item, or reiserfs_cut_from_item does not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) * release path if operation was not complete
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) pathrelse(&path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) err = journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) reiserfs_write_unlock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) return err ? err : retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) static int reiserfs_unlink(struct inode *dir, struct dentry *dentry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) int retval, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) struct inode *inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) struct reiserfs_dir_entry de;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) INITIALIZE_PATH(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) struct reiserfs_transaction_handle th;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) int jbegin_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) unsigned long savelink;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) retval = dquot_initialize(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) inode = d_inode(dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) * in this transaction we can be doing at max two balancings and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) * update two stat datas, we change quotas of the owner of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) * directory and of the owner of the parent directory. The quota
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) * structure is possibly deleted only on iput => outside of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) * this transaction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) jbegin_count =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) JOURNAL_PER_BALANCE_CNT * 2 + 2 +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) 4 * REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) reiserfs_write_lock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) retval = journal_begin(&th, dir->i_sb, jbegin_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) goto out_unlink;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) de.de_gen_number_bit_string = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) if ((retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) reiserfs_find_entry(dir, dentry->d_name.name, dentry->d_name.len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) &path, &de)) == NAME_NOT_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) retval = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) goto end_unlink;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) } else if (retval == IO_ERROR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) retval = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) goto end_unlink;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) reiserfs_update_inode_transaction(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) reiserfs_update_inode_transaction(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) if (de.de_objectid != inode->i_ino) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) * FIXME: compare key of an object and a key found in the entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) retval = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) goto end_unlink;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) if (!inode->i_nlink) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) reiserfs_warning(inode->i_sb, "reiserfs-7042",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) "deleting nonexistent file (%lu), %d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) inode->i_ino, inode->i_nlink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) set_nlink(inode, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) drop_nlink(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) * we schedule before doing the add_save_link call, save the link
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) * count so we don't race
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) savelink = inode->i_nlink;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) reiserfs_cut_from_item(&th, &path, &de.de_entry_key, dir, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) if (retval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) inc_nlink(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) goto end_unlink;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) inode->i_ctime = current_time(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) reiserfs_update_sd(&th, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) dir->i_size -= (de.de_entrylen + DEH_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) dir->i_ctime = dir->i_mtime = current_time(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) reiserfs_update_sd(&th, dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) if (!savelink)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) /* prevent file from getting lost */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) add_save_link(&th, inode, 0 /* not truncate */ );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) retval = journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) reiserfs_check_path(&path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) reiserfs_write_unlock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) end_unlink:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) pathrelse(&path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) err = journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) reiserfs_check_path(&path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) retval = err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) out_unlink:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) reiserfs_write_unlock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) static int reiserfs_symlink(struct inode *parent_dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) struct dentry *dentry, const char *symname)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) struct inode *inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) int item_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) struct reiserfs_transaction_handle th;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) struct reiserfs_security_handle security;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) int mode = S_IFLNK | S_IRWXUGO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) * We need blocks for transaction + (user+group)*(quotas for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) * new inode + update of quota for directory owner)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) int jbegin_count =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) JOURNAL_PER_BALANCE_CNT * 3 +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) 2 * (REISERFS_QUOTA_INIT_BLOCKS(parent_dir->i_sb) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) REISERFS_QUOTA_TRANS_BLOCKS(parent_dir->i_sb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) retval = dquot_initialize(parent_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) if (!(inode = new_inode(parent_dir->i_sb))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) retval = new_inode_init(inode, parent_dir, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) drop_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) retval = reiserfs_security_init(parent_dir, inode, &dentry->d_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) &security);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) if (retval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) drop_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) jbegin_count += retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) reiserfs_write_lock(parent_dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) item_len = ROUND_UP(strlen(symname));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) if (item_len > MAX_DIRECT_ITEM_LEN(parent_dir->i_sb->s_blocksize)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) retval = -ENAMETOOLONG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) drop_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) goto out_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) name = kmalloc(item_len, GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) if (!name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) drop_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) retval = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) goto out_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) memcpy(name, symname, strlen(symname));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) padd_item(name, item_len, strlen(symname));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) retval = journal_begin(&th, parent_dir->i_sb, jbegin_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) drop_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) kfree(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) goto out_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) reiserfs_new_inode(&th, parent_dir, mode, name, strlen(symname),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) dentry, inode, &security);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) kfree(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) if (retval) { /* reiserfs_new_inode iputs for us */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) goto out_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) reiserfs_update_inode_transaction(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) reiserfs_update_inode_transaction(parent_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) inode->i_op = &reiserfs_symlink_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) inode_nohighmem(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) inode->i_mapping->a_ops = &reiserfs_address_space_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) retval = reiserfs_add_entry(&th, parent_dir, dentry->d_name.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) dentry->d_name.len, inode, 1 /*visible */ );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) drop_nlink(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) reiserfs_update_sd(&th, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) err = journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) retval = err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) unlock_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) iput(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) goto out_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) d_instantiate_new(dentry, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) retval = journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) out_failed:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) reiserfs_write_unlock(parent_dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) static int reiserfs_link(struct dentry *old_dentry, struct inode *dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) struct dentry *dentry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) struct inode *inode = d_inode(old_dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) struct reiserfs_transaction_handle th;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) * We need blocks for transaction + update of quotas for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) * the owners of the directory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) int jbegin_count =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) JOURNAL_PER_BALANCE_CNT * 3 +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) 2 * REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) retval = dquot_initialize(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) reiserfs_write_lock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) if (inode->i_nlink >= REISERFS_LINK_MAX) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) /* FIXME: sd_nlink is 32 bit for new files */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) reiserfs_write_unlock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) return -EMLINK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) /* inc before scheduling so reiserfs_unlink knows we are here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) inc_nlink(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) retval = journal_begin(&th, dir->i_sb, jbegin_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) drop_nlink(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) reiserfs_write_unlock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) /* create new entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) reiserfs_add_entry(&th, dir, dentry->d_name.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) dentry->d_name.len, inode, 1 /*visible */ );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) reiserfs_update_inode_transaction(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) reiserfs_update_inode_transaction(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) drop_nlink(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) err = journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) reiserfs_write_unlock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) return err ? err : retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) inode->i_ctime = current_time(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) reiserfs_update_sd(&th, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) ihold(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) d_instantiate(dentry, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) retval = journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) reiserfs_write_unlock(dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) /* de contains information pointing to an entry which */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) static int de_still_valid(const char *name, int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) struct reiserfs_dir_entry *de)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) struct reiserfs_dir_entry tmp = *de;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) /* recalculate pointer to name and name length */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) set_de_name_and_namelen(&tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) /* FIXME: could check more */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) if (tmp.de_namelen != len || memcmp(name, de->de_name, len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) static int entry_points_to_object(const char *name, int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) struct reiserfs_dir_entry *de,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) if (!de_still_valid(name, len, de))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) if (inode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) if (!de_visible(de->de_deh + de->de_entry_num))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) reiserfs_panic(inode->i_sb, "vs-7042",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) "entry must be visible");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) return (de->de_objectid == inode->i_ino) ? 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) /* this must be added hidden entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) if (de_visible(de->de_deh + de->de_entry_num))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) reiserfs_panic(NULL, "vs-7043", "entry must be visible");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) /* sets key of objectid the entry has to point to */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) static void set_ino_in_dir_entry(struct reiserfs_dir_entry *de,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) struct reiserfs_key *key)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) /* JDM These operations are endian safe - both are le */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) de->de_deh[de->de_entry_num].deh_dir_id = key->k_dir_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) de->de_deh[de->de_entry_num].deh_objectid = key->k_objectid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) * process, that is going to call fix_nodes/do_balance must hold only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) * one path. If it holds 2 or more, it can get into endless waiting in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) * get_empty_nodes or its clones
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) static int reiserfs_rename(struct inode *old_dir, struct dentry *old_dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) struct inode *new_dir, struct dentry *new_dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) unsigned int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) INITIALIZE_PATH(old_entry_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) INITIALIZE_PATH(new_entry_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) INITIALIZE_PATH(dot_dot_entry_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) struct item_head new_entry_ih, old_entry_ih, dot_dot_ih;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) struct reiserfs_dir_entry old_de, new_de, dot_dot_de;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) struct inode *old_inode, *new_dentry_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) struct reiserfs_transaction_handle th;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) int jbegin_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) umode_t old_inode_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) unsigned long savelink = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) struct timespec64 ctime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) if (flags & ~RENAME_NOREPLACE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) * three balancings: (1) old name removal, (2) new name insertion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) * and (3) maybe "save" link insertion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) * stat data updates: (1) old directory,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) * (2) new directory and (3) maybe old object stat data (when it is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) * directory) and (4) maybe stat data of object to which new entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) * pointed initially and (5) maybe block containing ".." of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) * renamed directory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) * quota updates: two parent directories
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) jbegin_count =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) JOURNAL_PER_BALANCE_CNT * 3 + 5 +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) 4 * REISERFS_QUOTA_TRANS_BLOCKS(old_dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) retval = dquot_initialize(old_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) retval = dquot_initialize(new_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) old_inode = d_inode(old_dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) new_dentry_inode = d_inode(new_dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) * make sure that oldname still exists and points to an object we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) * are going to rename
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) old_de.de_gen_number_bit_string = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) reiserfs_write_lock(old_dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) reiserfs_find_entry(old_dir, old_dentry->d_name.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) old_dentry->d_name.len, &old_entry_path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) &old_de);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) pathrelse(&old_entry_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) if (retval == IO_ERROR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) reiserfs_write_unlock(old_dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) if (retval != NAME_FOUND || old_de.de_objectid != old_inode->i_ino) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) reiserfs_write_unlock(old_dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) old_inode_mode = old_inode->i_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) if (S_ISDIR(old_inode_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) * make sure that directory being renamed has correct ".."
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) * and that its new parent directory has not too many links
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) * already
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) if (new_dentry_inode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) if (!reiserfs_empty_dir(new_dentry_inode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) reiserfs_write_unlock(old_dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) return -ENOTEMPTY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) * directory is renamed, its parent directory will be changed,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) * so find ".." entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) dot_dot_de.de_gen_number_bit_string = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) reiserfs_find_entry(old_inode, "..", 2, &dot_dot_entry_path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) &dot_dot_de);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) pathrelse(&dot_dot_entry_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) if (retval != NAME_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) reiserfs_write_unlock(old_dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) /* inode number of .. must equal old_dir->i_ino */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) if (dot_dot_de.de_objectid != old_dir->i_ino) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) reiserfs_write_unlock(old_dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) retval = journal_begin(&th, old_dir->i_sb, jbegin_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) reiserfs_write_unlock(old_dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) /* add new entry (or find the existing one) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) reiserfs_add_entry(&th, new_dir, new_dentry->d_name.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) new_dentry->d_name.len, old_inode, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) if (retval == -EEXIST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) if (!new_dentry_inode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) reiserfs_panic(old_dir->i_sb, "vs-7050",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) "new entry is found, new inode == 0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) } else if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) int err = journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) reiserfs_write_unlock(old_dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) return err ? err : retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) reiserfs_update_inode_transaction(old_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) reiserfs_update_inode_transaction(new_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) * this makes it so an fsync on an open fd for the old name will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) * commit the rename operation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) reiserfs_update_inode_transaction(old_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) if (new_dentry_inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) reiserfs_update_inode_transaction(new_dentry_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) while (1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) * look for old name using corresponding entry key
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) * (found by reiserfs_find_entry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) if ((retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) search_by_entry_key(new_dir->i_sb, &old_de.de_entry_key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) &old_entry_path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) &old_de)) != NAME_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) pathrelse(&old_entry_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) reiserfs_write_unlock(old_dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) copy_item_head(&old_entry_ih, tp_item_head(&old_entry_path));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) reiserfs_prepare_for_journal(old_inode->i_sb, old_de.de_bh, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) /* look for new name by reiserfs_find_entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) new_de.de_gen_number_bit_string = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) reiserfs_find_entry(new_dir, new_dentry->d_name.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) new_dentry->d_name.len, &new_entry_path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) &new_de);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) * reiserfs_add_entry should not return IO_ERROR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) * because it is called with essentially same parameters from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) * reiserfs_add_entry above, and we'll catch any i/o errors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) * before we get here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) if (retval != NAME_FOUND_INVISIBLE && retval != NAME_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) pathrelse(&new_entry_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) pathrelse(&old_entry_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) reiserfs_write_unlock(old_dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) copy_item_head(&new_entry_ih, tp_item_head(&new_entry_path));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) reiserfs_prepare_for_journal(old_inode->i_sb, new_de.de_bh, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) if (S_ISDIR(old_inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) if ((retval =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) search_by_entry_key(new_dir->i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) &dot_dot_de.de_entry_key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) &dot_dot_entry_path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) &dot_dot_de)) != NAME_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) pathrelse(&dot_dot_entry_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) pathrelse(&new_entry_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) pathrelse(&old_entry_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) reiserfs_write_unlock(old_dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) copy_item_head(&dot_dot_ih,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) tp_item_head(&dot_dot_entry_path));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) /* node containing ".." gets into transaction */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) reiserfs_prepare_for_journal(old_inode->i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) dot_dot_de.de_bh, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) * we should check seals here, not do
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) * this stuff, yes? Then, having
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) * gathered everything into RAM we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) * should lock the buffers, yes? -Hans
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) * probably. our rename needs to hold more
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) * than one path at once. The seals would
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) * have to be written to deal with multi-path
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) * issues -chris
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) * sanity checking before doing the rename - avoid races many
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) * of the above checks could have scheduled. We have to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) * sure our items haven't been shifted by another process.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) if (item_moved(&new_entry_ih, &new_entry_path) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) !entry_points_to_object(new_dentry->d_name.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) new_dentry->d_name.len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) &new_de, new_dentry_inode) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) item_moved(&old_entry_ih, &old_entry_path) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) !entry_points_to_object(old_dentry->d_name.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) old_dentry->d_name.len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) &old_de, old_inode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) reiserfs_restore_prepared_buffer(old_inode->i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) new_de.de_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) reiserfs_restore_prepared_buffer(old_inode->i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) old_de.de_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) if (S_ISDIR(old_inode_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) reiserfs_restore_prepared_buffer(old_inode->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) dot_dot_de.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) de_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) if (S_ISDIR(old_inode_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) if (item_moved(&dot_dot_ih, &dot_dot_entry_path) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) !entry_points_to_object("..", 2, &dot_dot_de,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) old_dir)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) reiserfs_restore_prepared_buffer(old_inode->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) old_de.de_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) reiserfs_restore_prepared_buffer(old_inode->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) new_de.de_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) reiserfs_restore_prepared_buffer(old_inode->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) dot_dot_de.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) de_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) RFALSE(S_ISDIR(old_inode_mode) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) !buffer_journal_prepared(dot_dot_de.de_bh), "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) * ok, all the changes can be done in one fell swoop when we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) * have claimed all the buffers needed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) mark_de_visible(new_de.de_deh + new_de.de_entry_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) set_ino_in_dir_entry(&new_de, INODE_PKEY(old_inode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) journal_mark_dirty(&th, new_de.de_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) mark_de_hidden(old_de.de_deh + old_de.de_entry_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) journal_mark_dirty(&th, old_de.de_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) ctime = current_time(old_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) old_dir->i_ctime = old_dir->i_mtime = ctime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) new_dir->i_ctime = new_dir->i_mtime = ctime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) * thanks to Alex Adriaanse <alex_a@caltech.edu> for patch
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) * which adds ctime update of renamed object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) old_inode->i_ctime = ctime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) if (new_dentry_inode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) /* adjust link number of the victim */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) if (S_ISDIR(new_dentry_inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) clear_nlink(new_dentry_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) drop_nlink(new_dentry_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) new_dentry_inode->i_ctime = ctime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) savelink = new_dentry_inode->i_nlink;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) if (S_ISDIR(old_inode_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) /* adjust ".." of renamed directory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) set_ino_in_dir_entry(&dot_dot_de, INODE_PKEY(new_dir));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) journal_mark_dirty(&th, dot_dot_de.de_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) * there (in new_dir) was no directory, so it got new link
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) * (".." of renamed directory)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) if (!new_dentry_inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) INC_DIR_INODE_NLINK(new_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) /* old directory lost one link - ".. " of renamed directory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) DEC_DIR_INODE_NLINK(old_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) * looks like in 2.3.99pre3 brelse is atomic.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) * so we can use pathrelse
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) pathrelse(&new_entry_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) pathrelse(&dot_dot_entry_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) * FIXME: this reiserfs_cut_from_item's return value may screw up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) * anybody, but it will panic if will not be able to find the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) * entry. This needs one more clean up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) if (reiserfs_cut_from_item
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) (&th, &old_entry_path, &old_de.de_entry_key, old_dir, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) 0) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) reiserfs_error(old_dir->i_sb, "vs-7060",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) "couldn't not cut old name. Fsck later?");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) old_dir->i_size -= DEH_SIZE + old_de.de_entrylen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) reiserfs_update_sd(&th, old_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) reiserfs_update_sd(&th, new_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) reiserfs_update_sd(&th, old_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) if (new_dentry_inode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) if (savelink == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) add_save_link(&th, new_dentry_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) 0 /* not truncate */ );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) reiserfs_update_sd(&th, new_dentry_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) retval = journal_end(&th);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) reiserfs_write_unlock(old_dir->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) /* directories can handle most operations... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) const struct inode_operations reiserfs_dir_inode_operations = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) .create = reiserfs_create,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) .lookup = reiserfs_lookup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) .link = reiserfs_link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) .unlink = reiserfs_unlink,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) .symlink = reiserfs_symlink,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) .mkdir = reiserfs_mkdir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) .rmdir = reiserfs_rmdir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) .mknod = reiserfs_mknod,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) .rename = reiserfs_rename,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) .setattr = reiserfs_setattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) .listxattr = reiserfs_listxattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) .permission = reiserfs_permission,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) .get_acl = reiserfs_get_acl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) .set_acl = reiserfs_set_acl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) * symlink operations.. same as page_symlink_inode_operations, with xattr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) * stuff added
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) const struct inode_operations reiserfs_symlink_inode_operations = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) .get_link = page_get_link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) .setattr = reiserfs_setattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) .listxattr = reiserfs_listxattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) .permission = reiserfs_permission,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) * special file operations.. just xattr/acl stuff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) const struct inode_operations reiserfs_special_inode_operations = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) .setattr = reiserfs_setattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) .listxattr = reiserfs_listxattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) .permission = reiserfs_permission,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) .get_acl = reiserfs_get_acl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) .set_acl = reiserfs_set_acl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) };
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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