file.c 2.2 KB

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  1. /*
  2. * linux/fs/ext2/file.c
  3. *
  4. * Copyright (C) 1992, 1993, 1994, 1995
  5. * Remy Card (card@masi.ibp.fr)
  6. * Laboratoire MASI - Institut Blaise Pascal
  7. * Universite Pierre et Marie Curie (Paris VI)
  8. *
  9. * from
  10. *
  11. * linux/fs/minix/file.c
  12. *
  13. * Copyright (C) 1991, 1992 Linus Torvalds
  14. *
  15. * ext2 fs regular file handling primitives
  16. *
  17. * 64-bit file support on 64-bit platforms by Jakub Jelinek
  18. * (jj@sunsite.ms.mff.cuni.cz)
  19. */
  20. #include <linux/time.h>
  21. #include "ext2.h"
  22. #include "xattr.h"
  23. #include "acl.h"
  24. /*
  25. * Called when an inode is released. Note that this is different
  26. * from ext2_open_file: open gets called at every open, but release
  27. * gets called only when /all/ the files are closed.
  28. */
  29. static int ext2_release_file (struct inode * inode, struct file * filp)
  30. {
  31. if (filp->f_mode & FMODE_WRITE)
  32. ext2_discard_prealloc (inode);
  33. return 0;
  34. }
  35. /*
  36. * We have mostly NULL's here: the current defaults are ok for
  37. * the ext2 filesystem.
  38. */
  39. const struct file_operations ext2_file_operations = {
  40. .llseek = generic_file_llseek,
  41. .read = do_sync_read,
  42. .write = do_sync_write,
  43. .aio_read = generic_file_aio_read,
  44. .aio_write = generic_file_aio_write,
  45. .ioctl = ext2_ioctl,
  46. #ifdef CONFIG_COMPAT
  47. .compat_ioctl = ext2_compat_ioctl,
  48. #endif
  49. .mmap = generic_file_mmap,
  50. .open = generic_file_open,
  51. .release = ext2_release_file,
  52. .fsync = ext2_sync_file,
  53. .sendfile = generic_file_sendfile,
  54. .splice_read = generic_file_splice_read,
  55. .splice_write = generic_file_splice_write,
  56. };
  57. #ifdef CONFIG_EXT2_FS_XIP
  58. const struct file_operations ext2_xip_file_operations = {
  59. .llseek = generic_file_llseek,
  60. .read = xip_file_read,
  61. .write = xip_file_write,
  62. .ioctl = ext2_ioctl,
  63. #ifdef CONFIG_COMPAT
  64. .compat_ioctl = ext2_compat_ioctl,
  65. #endif
  66. .mmap = xip_file_mmap,
  67. .open = generic_file_open,
  68. .release = ext2_release_file,
  69. .fsync = ext2_sync_file,
  70. .sendfile = xip_file_sendfile,
  71. };
  72. #endif
  73. const struct inode_operations ext2_file_inode_operations = {
  74. .truncate = ext2_truncate,
  75. #ifdef CONFIG_EXT2_FS_XATTR
  76. .setxattr = generic_setxattr,
  77. .getxattr = generic_getxattr,
  78. .listxattr = ext2_listxattr,
  79. .removexattr = generic_removexattr,
  80. #endif
  81. .setattr = ext2_setattr,
  82. .permission = ext2_permission,
  83. };