quota.h 5.9 KB

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  1. /*
  2. * Copyright (c) 1982, 1986 Regents of the University of California.
  3. * All rights reserved.
  4. *
  5. * This code is derived from software contributed to Berkeley by
  6. * Robert Elz at The University of Melbourne.
  7. *
  8. * Redistribution and use in source and binary forms, with or without
  9. * modification, are permitted provided that the following conditions
  10. * are met:
  11. * 1. Redistributions of source code must retain the above copyright
  12. * notice, this list of conditions and the following disclaimer.
  13. * 2. Redistributions in binary form must reproduce the above copyright
  14. * notice, this list of conditions and the following disclaimer in the
  15. * documentation and/or other materials provided with the distribution.
  16. * 3. Neither the name of the University nor the names of its contributors
  17. * may be used to endorse or promote products derived from this software
  18. * without specific prior written permission.
  19. *
  20. * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23. * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30. * SUCH DAMAGE.
  31. */
  32. #ifndef _LINUX_QUOTA_
  33. #define _LINUX_QUOTA_
  34. #include <linux/errno.h>
  35. #include <linux/types.h>
  36. #define __DQUOT_VERSION__ "dquot_6.6.0"
  37. #define MAXQUOTAS 3
  38. #define USRQUOTA 0 /* element used for user quotas */
  39. #define GRPQUOTA 1 /* element used for group quotas */
  40. #define PRJQUOTA 2 /* element used for project quotas */
  41. /*
  42. * Definitions for the default names of the quotas files.
  43. */
  44. #define INITQFNAMES { \
  45. "user", /* USRQUOTA */ \
  46. "group", /* GRPQUOTA */ \
  47. "project", /* PRJQUOTA */ \
  48. "undefined", \
  49. };
  50. /*
  51. * Command definitions for the 'quotactl' system call.
  52. * The commands are broken into a main command defined below
  53. * and a subcommand that is used to convey the type of
  54. * quota that is being manipulated (see above).
  55. */
  56. #define SUBCMDMASK 0x00ff
  57. #define SUBCMDSHIFT 8
  58. #define QCMD(cmd, type) (((cmd) << SUBCMDSHIFT) | ((type) & SUBCMDMASK))
  59. #define Q_SYNC 0x800001 /* sync disk copy of a filesystems quotas */
  60. #define Q_QUOTAON 0x800002 /* turn quotas on */
  61. #define Q_QUOTAOFF 0x800003 /* turn quotas off */
  62. #define Q_GETFMT 0x800004 /* get quota format used on given filesystem */
  63. #define Q_GETINFO 0x800005 /* get information about quota files */
  64. #define Q_SETINFO 0x800006 /* set information about quota files */
  65. #define Q_GETQUOTA 0x800007 /* get user quota structure */
  66. #define Q_SETQUOTA 0x800008 /* set user quota structure */
  67. /* Quota format type IDs */
  68. #define QFMT_VFS_OLD 1
  69. #define QFMT_VFS_V0 2
  70. #define QFMT_OCFS2 3
  71. #define QFMT_VFS_V1 4
  72. /* Size of block in which space limits are passed through the quota
  73. * interface */
  74. #define QIF_DQBLKSIZE_BITS 10
  75. #define QIF_DQBLKSIZE (1 << QIF_DQBLKSIZE_BITS)
  76. /*
  77. * Quota structure used for communication with userspace via quotactl
  78. * Following flags are used to specify which fields are valid
  79. */
  80. enum {
  81. QIF_BLIMITS_B = 0,
  82. QIF_SPACE_B,
  83. QIF_ILIMITS_B,
  84. QIF_INODES_B,
  85. QIF_BTIME_B,
  86. QIF_ITIME_B,
  87. };
  88. #define QIF_BLIMITS (1 << QIF_BLIMITS_B)
  89. #define QIF_SPACE (1 << QIF_SPACE_B)
  90. #define QIF_ILIMITS (1 << QIF_ILIMITS_B)
  91. #define QIF_INODES (1 << QIF_INODES_B)
  92. #define QIF_BTIME (1 << QIF_BTIME_B)
  93. #define QIF_ITIME (1 << QIF_ITIME_B)
  94. #define QIF_LIMITS (QIF_BLIMITS | QIF_ILIMITS)
  95. #define QIF_USAGE (QIF_SPACE | QIF_INODES)
  96. #define QIF_TIMES (QIF_BTIME | QIF_ITIME)
  97. #define QIF_ALL (QIF_LIMITS | QIF_USAGE | QIF_TIMES)
  98. struct if_dqblk {
  99. __u64 dqb_bhardlimit;
  100. __u64 dqb_bsoftlimit;
  101. __u64 dqb_curspace;
  102. __u64 dqb_ihardlimit;
  103. __u64 dqb_isoftlimit;
  104. __u64 dqb_curinodes;
  105. __u64 dqb_btime;
  106. __u64 dqb_itime;
  107. __u32 dqb_valid;
  108. };
  109. /*
  110. * Structure used for setting quota information about file via quotactl
  111. * Following flags are used to specify which fields are valid
  112. */
  113. #define IIF_BGRACE 1
  114. #define IIF_IGRACE 2
  115. #define IIF_FLAGS 4
  116. #define IIF_ALL (IIF_BGRACE | IIF_IGRACE | IIF_FLAGS)
  117. enum {
  118. DQF_ROOT_SQUASH_B = 0,
  119. DQF_SYS_FILE_B = 16,
  120. /* Kernel internal flags invisible to userspace */
  121. DQF_PRIVATE
  122. };
  123. /* Root squash enabled (for v1 quota format) */
  124. #define DQF_ROOT_SQUASH (1 << DQF_ROOT_SQUASH_B)
  125. /* Quota stored in a system file */
  126. #define DQF_SYS_FILE (1 << DQF_SYS_FILE_B)
  127. struct if_dqinfo {
  128. __u64 dqi_bgrace;
  129. __u64 dqi_igrace;
  130. __u32 dqi_flags; /* DFQ_* */
  131. __u32 dqi_valid;
  132. };
  133. /*
  134. * Definitions for quota netlink interface
  135. */
  136. #define QUOTA_NL_NOWARN 0
  137. #define QUOTA_NL_IHARDWARN 1 /* Inode hardlimit reached */
  138. #define QUOTA_NL_ISOFTLONGWARN 2 /* Inode grace time expired */
  139. #define QUOTA_NL_ISOFTWARN 3 /* Inode softlimit reached */
  140. #define QUOTA_NL_BHARDWARN 4 /* Block hardlimit reached */
  141. #define QUOTA_NL_BSOFTLONGWARN 5 /* Block grace time expired */
  142. #define QUOTA_NL_BSOFTWARN 6 /* Block softlimit reached */
  143. #define QUOTA_NL_IHARDBELOW 7 /* Usage got below inode hardlimit */
  144. #define QUOTA_NL_ISOFTBELOW 8 /* Usage got below inode softlimit */
  145. #define QUOTA_NL_BHARDBELOW 9 /* Usage got below block hardlimit */
  146. #define QUOTA_NL_BSOFTBELOW 10 /* Usage got below block softlimit */
  147. enum {
  148. QUOTA_NL_C_UNSPEC,
  149. QUOTA_NL_C_WARNING,
  150. __QUOTA_NL_C_MAX,
  151. };
  152. #define QUOTA_NL_C_MAX (__QUOTA_NL_C_MAX - 1)
  153. enum {
  154. QUOTA_NL_A_UNSPEC,
  155. QUOTA_NL_A_QTYPE,
  156. QUOTA_NL_A_EXCESS_ID,
  157. QUOTA_NL_A_WARNING,
  158. QUOTA_NL_A_DEV_MAJOR,
  159. QUOTA_NL_A_DEV_MINOR,
  160. QUOTA_NL_A_CAUSED_ID,
  161. __QUOTA_NL_A_MAX,
  162. };
  163. #define QUOTA_NL_A_MAX (__QUOTA_NL_A_MAX - 1)
  164. #endif /* _LINUX_QUOTA_ */