summaryrefslogtreecommitdiff
path: root/fs/quota/quotaio_v2.h
diff options
context:
space:
mode:
authorJan Kara <jack@suse.cz>2009-01-26 15:28:09 +0100
committerJan Kara <jack@suse.cz>2009-03-26 02:18:35 +0100
commit884d179dff3aa98a73c3ba9dee05fd6050d664f0 (patch)
tree68c18e3ff8decd2af861e807bed96cca2dea30d4 /fs/quota/quotaio_v2.h
parent60e58e0f30e723464c2a7d34b71b8675566c572d (diff)
quota: Move quota files into separate directory
Quota subsystem has more and more files. It's time to create a dir for it. Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/quota/quotaio_v2.h')
-rw-r--r--fs/quota/quotaio_v2.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/fs/quota/quotaio_v2.h b/fs/quota/quotaio_v2.h
new file mode 100644
index 000000000000..530fe580685c
--- /dev/null
+++ b/fs/quota/quotaio_v2.h
@@ -0,0 +1,60 @@
+/*
+ * Definitions of structures for vfsv0 quota format
+ */
+
+#ifndef _LINUX_QUOTAIO_V2_H
+#define _LINUX_QUOTAIO_V2_H
+
+#include <linux/types.h>
+#include <linux/quota.h>
+
+/*
+ * Definitions of magics and versions of current quota files
+ */
+#define V2_INITQMAGICS {\
+ 0xd9c01f11, /* USRQUOTA */\
+ 0xd9c01927 /* GRPQUOTA */\
+}
+
+#define V2_INITQVERSIONS {\
+ 0, /* USRQUOTA */\
+ 0 /* GRPQUOTA */\
+}
+
+/* First generic header */
+struct v2_disk_dqheader {
+ __le32 dqh_magic; /* Magic number identifying file */
+ __le32 dqh_version; /* File version */
+};
+
+/*
+ * The following structure defines the format of the disk quota file
+ * (as it appears on disk) - the file is a radix tree whose leaves point
+ * to blocks of these structures.
+ */
+struct v2_disk_dqblk {
+ __le32 dqb_id; /* id this quota applies to */
+ __le32 dqb_ihardlimit; /* absolute limit on allocated inodes */
+ __le32 dqb_isoftlimit; /* preferred inode limit */
+ __le32 dqb_curinodes; /* current # allocated inodes */
+ __le32 dqb_bhardlimit; /* absolute limit on disk space (in QUOTABLOCK_SIZE) */
+ __le32 dqb_bsoftlimit; /* preferred limit on disk space (in QUOTABLOCK_SIZE) */
+ __le64 dqb_curspace; /* current space occupied (in bytes) */
+ __le64 dqb_btime; /* time limit for excessive disk use */
+ __le64 dqb_itime; /* time limit for excessive inode use */
+};
+
+/* Header with type and version specific information */
+struct v2_disk_dqinfo {
+ __le32 dqi_bgrace; /* Time before block soft limit becomes hard limit */
+ __le32 dqi_igrace; /* Time before inode soft limit becomes hard limit */
+ __le32 dqi_flags; /* Flags for quotafile (DQF_*) */
+ __le32 dqi_blocks; /* Number of blocks in file */
+ __le32 dqi_free_blk; /* Number of first free block in the list */
+ __le32 dqi_free_entry; /* Number of block with at least one free entry */
+};
+
+#define V2_DQINFOOFF sizeof(struct v2_disk_dqheader) /* Offset of info header in file */
+#define V2_DQBLKSIZE_BITS 10 /* Size of leaf block in tree */
+
+#endif /* _LINUX_QUOTAIO_V2_H */