jfs_inode.c 3.5 KB

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  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. inode->i_flags &= ~(S_IMMUTABLE | S_APPEND |
  30. S_NOATIME | S_DIRSYNC | S_SYNC);
  31. if (flags & JFS_IMMUTABLE_FL)
  32. inode->i_flags |= S_IMMUTABLE;
  33. if (flags & JFS_APPEND_FL)
  34. inode->i_flags |= S_APPEND;
  35. if (flags & JFS_NOATIME_FL)
  36. inode->i_flags |= S_NOATIME;
  37. if (flags & JFS_DIRSYNC_FL)
  38. inode->i_flags |= S_DIRSYNC;
  39. if (flags & JFS_SYNC_FL)
  40. inode->i_flags |= S_SYNC;
  41. }
  42. /*
  43. * NAME: ialloc()
  44. *
  45. * FUNCTION: Allocate a new inode
  46. *
  47. */
  48. struct inode *ialloc(struct inode *parent, umode_t mode)
  49. {
  50. struct super_block *sb = parent->i_sb;
  51. struct inode *inode;
  52. struct jfs_inode_info *jfs_inode;
  53. int rc;
  54. inode = new_inode(sb);
  55. if (!inode) {
  56. jfs_warn("ialloc: new_inode returned NULL!");
  57. return ERR_PTR(-ENOMEM);
  58. }
  59. jfs_inode = JFS_IP(inode);
  60. rc = diAlloc(parent, S_ISDIR(mode), inode);
  61. if (rc) {
  62. jfs_warn("ialloc: diAlloc returned %d!", rc);
  63. if (rc == -EIO)
  64. make_bad_inode(inode);
  65. iput(inode);
  66. return ERR_PTR(rc);
  67. }
  68. inode->i_uid = current->fsuid;
  69. if (parent->i_mode & S_ISGID) {
  70. inode->i_gid = parent->i_gid;
  71. if (S_ISDIR(mode))
  72. mode |= S_ISGID;
  73. } else
  74. inode->i_gid = current->fsgid;
  75. /*
  76. * New inodes need to save sane values on disk when
  77. * uid & gid mount options are used
  78. */
  79. jfs_inode->saved_uid = inode->i_uid;
  80. jfs_inode->saved_gid = inode->i_gid;
  81. /*
  82. * Allocate inode to quota.
  83. */
  84. if (DQUOT_ALLOC_INODE(inode)) {
  85. DQUOT_DROP(inode);
  86. inode->i_flags |= S_NOQUOTA;
  87. inode->i_nlink = 0;
  88. iput(inode);
  89. return ERR_PTR(-EDQUOT);
  90. }
  91. inode->i_mode = mode;
  92. /* inherit flags from parent */
  93. jfs_inode->mode2 = JFS_IP(parent)->mode2 & JFS_FL_INHERIT;
  94. if (S_ISDIR(mode)) {
  95. jfs_inode->mode2 |= IDIRECTORY;
  96. jfs_inode->mode2 &= ~JFS_DIRSYNC_FL;
  97. }
  98. else {
  99. jfs_inode->mode2 |= INLINEEA | ISPARSE;
  100. if (S_ISLNK(mode))
  101. jfs_inode->mode2 &= ~(JFS_IMMUTABLE_FL|JFS_APPEND_FL);
  102. }
  103. jfs_inode->mode2 |= mode;
  104. inode->i_blocks = 0;
  105. inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
  106. jfs_inode->otime = inode->i_ctime.tv_sec;
  107. inode->i_generation = JFS_SBI(sb)->gengen++;
  108. jfs_inode->cflag = 0;
  109. /* Zero remaining fields */
  110. memset(&jfs_inode->acl, 0, sizeof(dxd_t));
  111. memset(&jfs_inode->ea, 0, sizeof(dxd_t));
  112. jfs_inode->next_index = 0;
  113. jfs_inode->acltype = 0;
  114. jfs_inode->btorder = 0;
  115. jfs_inode->btindex = 0;
  116. jfs_inode->bxflag = 0;
  117. jfs_inode->blid = 0;
  118. jfs_inode->atlhead = 0;
  119. jfs_inode->atltail = 0;
  120. jfs_inode->xtlid = 0;
  121. jfs_set_inode_flags(inode);
  122. jfs_info("ialloc returns inode = 0x%p\n", inode);
  123. return inode;
  124. }