jfs_inode.c 4.0 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167
  1. /*
  2. * Copyright (C) International Business Machines Corp., 2000-2004
  3. *
  4. * This program is free software; you can redistribute it and/or modify
  5. * it under the terms of the GNU General Public License as published by
  6. * the Free Software Foundation; either version 2 of the License, or
  7. * (at your option) any later version.
  8. *
  9. * This program is distributed in the hope that it will be useful,
  10. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
  12. * the GNU General Public License for more details.
  13. *
  14. * You should have received a copy of the GNU General Public License
  15. * along with this program; if not, write to the Free Software
  16. * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  17. */
  18. #include <linux/fs.h>
  19. #include <linux/quotaops.h>
  20. #include "jfs_incore.h"
  21. #include "jfs_inode.h"
  22. #include "jfs_filsys.h"
  23. #include "jfs_imap.h"
  24. #include "jfs_dinode.h"
  25. #include "jfs_debug.h"
  26. void jfs_set_inode_flags(struct inode *inode)
  27. {
  28. unsigned int flags = JFS_IP(inode)->mode2;
  29. unsigned int new_fl = 0;
  30. if (flags & JFS_IMMUTABLE_FL)
  31. new_fl |= S_IMMUTABLE;
  32. if (flags & JFS_APPEND_FL)
  33. new_fl |= S_APPEND;
  34. if (flags & JFS_NOATIME_FL)
  35. new_fl |= S_NOATIME;
  36. if (flags & JFS_DIRSYNC_FL)
  37. new_fl |= S_DIRSYNC;
  38. if (flags & JFS_SYNC_FL)
  39. new_fl |= S_SYNC;
  40. inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND | S_NOATIME |
  41. S_DIRSYNC | S_SYNC);
  42. }
  43. void jfs_get_inode_flags(struct jfs_inode_info *jfs_ip)
  44. {
  45. unsigned int flags = jfs_ip->vfs_inode.i_flags;
  46. jfs_ip->mode2 &= ~(JFS_IMMUTABLE_FL | JFS_APPEND_FL | JFS_NOATIME_FL |
  47. JFS_DIRSYNC_FL | JFS_SYNC_FL);
  48. if (flags & S_IMMUTABLE)
  49. jfs_ip->mode2 |= JFS_IMMUTABLE_FL;
  50. if (flags & S_APPEND)
  51. jfs_ip->mode2 |= JFS_APPEND_FL;
  52. if (flags & S_NOATIME)
  53. jfs_ip->mode2 |= JFS_NOATIME_FL;
  54. if (flags & S_DIRSYNC)
  55. jfs_ip->mode2 |= JFS_DIRSYNC_FL;
  56. if (flags & S_SYNC)
  57. jfs_ip->mode2 |= JFS_SYNC_FL;
  58. }
  59. /*
  60. * NAME: ialloc()
  61. *
  62. * FUNCTION: Allocate a new inode
  63. *
  64. */
  65. struct inode *ialloc(struct inode *parent, umode_t mode)
  66. {
  67. struct super_block *sb = parent->i_sb;
  68. struct inode *inode;
  69. struct jfs_inode_info *jfs_inode;
  70. int rc;
  71. inode = new_inode(sb);
  72. if (!inode) {
  73. jfs_warn("ialloc: new_inode returned NULL!");
  74. rc = -ENOMEM;
  75. goto fail;
  76. }
  77. jfs_inode = JFS_IP(inode);
  78. rc = diAlloc(parent, S_ISDIR(mode), inode);
  79. if (rc) {
  80. jfs_warn("ialloc: diAlloc returned %d!", rc);
  81. if (rc == -EIO)
  82. make_bad_inode(inode);
  83. goto fail_put;
  84. }
  85. if (insert_inode_locked(inode) < 0) {
  86. rc = -EINVAL;
  87. goto fail_put;
  88. }
  89. inode_init_owner(inode, parent, mode);
  90. /*
  91. * New inodes need to save sane values on disk when
  92. * uid & gid mount options are used
  93. */
  94. jfs_inode->saved_uid = inode->i_uid;
  95. jfs_inode->saved_gid = inode->i_gid;
  96. /*
  97. * Allocate inode to quota.
  98. */
  99. rc = dquot_initialize(inode);
  100. if (rc)
  101. goto fail_drop;
  102. rc = dquot_alloc_inode(inode);
  103. if (rc)
  104. goto fail_drop;
  105. /* inherit flags from parent */
  106. jfs_inode->mode2 = JFS_IP(parent)->mode2 & JFS_FL_INHERIT;
  107. if (S_ISDIR(mode)) {
  108. jfs_inode->mode2 |= IDIRECTORY;
  109. jfs_inode->mode2 &= ~JFS_DIRSYNC_FL;
  110. }
  111. else {
  112. jfs_inode->mode2 |= INLINEEA | ISPARSE;
  113. if (S_ISLNK(mode))
  114. jfs_inode->mode2 &= ~(JFS_IMMUTABLE_FL|JFS_APPEND_FL);
  115. }
  116. jfs_inode->mode2 |= inode->i_mode;
  117. inode->i_blocks = 0;
  118. inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
  119. jfs_inode->otime = inode->i_ctime.tv_sec;
  120. inode->i_generation = JFS_SBI(sb)->gengen++;
  121. jfs_inode->cflag = 0;
  122. /* Zero remaining fields */
  123. memset(&jfs_inode->acl, 0, sizeof(dxd_t));
  124. memset(&jfs_inode->ea, 0, sizeof(dxd_t));
  125. jfs_inode->next_index = 0;
  126. jfs_inode->acltype = 0;
  127. jfs_inode->btorder = 0;
  128. jfs_inode->btindex = 0;
  129. jfs_inode->bxflag = 0;
  130. jfs_inode->blid = 0;
  131. jfs_inode->atlhead = 0;
  132. jfs_inode->atltail = 0;
  133. jfs_inode->xtlid = 0;
  134. jfs_set_inode_flags(inode);
  135. jfs_info("ialloc returns inode = 0x%p\n", inode);
  136. return inode;
  137. fail_drop:
  138. dquot_drop(inode);
  139. inode->i_flags |= S_NOQUOTA;
  140. clear_nlink(inode);
  141. unlock_new_inode(inode);
  142. fail_put:
  143. iput(inode);
  144. fail:
  145. return ERR_PTR(rc);
  146. }