update

[l4.git] / l4 / pkg / linux-26-headers / include / linux / dqblk_xfs.h

diff --git a/l4/pkg/linux-26-headers/include/linux/dqblk_xfs.h b/l4/pkg/linux-26-headers/include/linux/dqblk_xfs.h
index 86552807aed949529fc34a3007658ede564f4e52..dcd75cc261962f65c909a6efa0defe3f1dcdc281 100644 (file)
--- a/l4/pkg/linux-26-headers/include/linux/dqblk_xfs.h
+++ b/l4/pkg/linux-26-headers/include/linux/dqblk_xfs.h
@@ -38,6 +38,7 @@
 #define Q_XGETQSTAT    XQM_CMD(5)      /* get quota subsystem status */
 #define Q_XQUOTARM     XQM_CMD(6)      /* free disk space used by dquots */
 #define Q_XQUOTASYNC   XQM_CMD(7)      /* delalloc flush, updates dquots */
+#define Q_XGETQSTATV   XQM_CMD(8)      /* newer version of get quota */
 
 /*
  * fs_disk_quota structure:
@@ -163,4 +164,50 @@ typedef struct fs_quota_stat {
        __u16           qs_iwarnlimit;  /* limit for num warnings */
 } fs_quota_stat_t;
 
+/*
+ * fs_quota_statv is used by Q_XGETQSTATV for a given file system. It provides
+ * a centralized way to get meta information about the quota subsystem. eg.
+ * space taken up for user, group, and project quotas, number of dquots
+ * currently incore.
+ *
+ * This version has proper versioning support with appropriate padding for
+ * future expansions, and ability to expand for future without creating any
+ * backward compatibility issues.
+ *
+ * Q_XGETQSTATV uses the passed in value of the requested version via
+ * fs_quota_statv.qs_version to determine the return data layout of
+ * fs_quota_statv.  The kernel will fill the data fields relevant to that
+ * version.
+ *
+ * If kernel does not support user space caller specified version, EINVAL will
+ * be returned. User space caller can then reduce the version number and retry
+ * the same command.
+ */
+#define FS_QSTATV_VERSION1     1       /* fs_quota_statv.qs_version */
+/*
+ * Some basic information about 'quota files' for Q_XGETQSTATV command
+ */
+struct fs_qfilestatv {
+       __u64           qfs_ino;        /* inode number */
+       __u64           qfs_nblks;      /* number of BBs 512-byte-blks */
+       __u32           qfs_nextents;   /* number of extents */
+       __u32           qfs_pad;        /* pad for 8-byte alignment */
+};
+
+struct fs_quota_statv {
+       __s8                    qs_version;     /* version for future changes */
+       __u8                    qs_pad1;        /* pad for 16bit alignment */
+       __u16                   qs_flags;       /* FS_QUOTA_.* flags */
+       __u32                   qs_incoredqs;   /* number of dquots incore */
+       struct fs_qfilestatv    qs_uquota;      /* user quota information */
+       struct fs_qfilestatv    qs_gquota;      /* group quota information */
+       struct fs_qfilestatv    qs_pquota;      /* project quota information */
+       __s32                   qs_btimelimit;  /* limit for blks timer */
+       __s32                   qs_itimelimit;  /* limit for inodes timer */
+       __s32                   qs_rtbtimelimit;/* limit for rt blks timer */
+       __u16                   qs_bwarnlimit;  /* limit for num warnings */
+       __u16                   qs_iwarnlimit;  /* limit for num warnings */
+       __u64                   qs_pad2[8];     /* for future proofing */
+};
+
 #endif /* _LINUX_DQBLK_XFS_H */