quota: Cleanup flags definitions

Currently all quota flags were defined just in kernel-private headers.
Export flags readable / writeable from userspace to userspace via
include/uapi/linux/quota.h.

Signed-off-by: Jan Kara <jack@suse.cz>

4 files changed, 22 insertions, 11 deletions

diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 8f0acef3d184..f8be368b9086 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -1248,7 +1248,7 @@ static int ignore_hardlimit(struct dquot *dquot)
 
         return capable(CAP_SYS_RESOURCE) &&
                (info->dqi_format->qf_fmt_id != QFMT_VFS_OLD ||
-                !(info->dqi_flags & V1_DQF_RSQUASH));
+                !(info->dqi_flags & DQF_ROOT_SQUASH));
 }
 
 /* needs dq_data_lock */
diff --git a/include/linux/dqblk_v1.h b/include/linux/dqblk_v1.h
index 3713a7232dd8..c0d4d1e2a45c 100644
--- a/include/linux/dqblk_v1.h
+++ b/include/linux/dqblk_v1.h
@@ -5,9 +5,6 @@
 #ifndef _LINUX_DQBLK_V1_H
 #define _LINUX_DQBLK_V1_H
 
-/* Root squash turned on */
-#define V1_DQF_RSQUASH 1
-
 /* Numbers of blocks needed for updates */
 #define V1_INIT_ALLOC 1
 #define V1_INIT_REWRITE 1
diff --git a/include/linux/quota.h b/include/linux/quota.h
index 50978b781a19..0c42113607ce 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -223,12 +223,14 @@ struct mem_dqinfo {
 
 struct super_block;
 
-#define DQF_MASK 0xffff         /* Mask for format specific flags */
-#define DQF_GETINFO_MASK 0x1ffff        /* Mask for flags passed to userspace */
-#define DQF_SETINFO_MASK 0xffff         /* Mask for flags modifiable from userspace */
-#define DQF_SYS_FILE_B          16
-#define DQF_SYS_FILE (1 << DQF_SYS_FILE_B)      /* Quota file stored as system file */
-#define DQF_INFO_DIRTY_B        31
+/* Mask for flags passed to userspace */
+#define DQF_GETINFO_MASK (DQF_ROOT_SQUASH | DQF_SYS_FILE)
+/* Mask for flags modifiable from userspace */
+#define DQF_SETINFO_MASK DQF_ROOT_SQUASH
+
+enum {
+        DQF_INFO_DIRTY_B = DQF_PRIVATE,
+};
 #define DQF_INFO_DIRTY (1 << DQF_INFO_DIRTY_B)  /* Is info dirty? */
 
 extern void mark_info_dirty(struct super_block *sb, int type);
diff --git a/include/uapi/linux/quota.h b/include/uapi/linux/quota.h
index 3b6cfbeb086d..1f49b8341c99 100644
--- a/include/uapi/linux/quota.h
+++ b/include/uapi/linux/quota.h
@@ -126,10 +126,22 @@ struct if_dqblk {
 #define IIF_FLAGS       4
 #define IIF_ALL         (IIF_BGRACE | IIF_IGRACE | IIF_FLAGS)
 
+enum {
+        DQF_ROOT_SQUASH_B = 0,
+        DQF_SYS_FILE_B = 16,
+        /* Kernel internal flags invisible to userspace */
+        DQF_PRIVATE
+};
+
+/* Root squash enabled (for v1 quota format) */
+#define DQF_ROOT_SQUASH (1 << DQF_ROOT_SQUASH_B)
+/* Quota stored in a system file */
+#define DQF_SYS_FILE    (1 << DQF_SYS_FILE_B)
+
 struct if_dqinfo {
         __u64 dqi_bgrace;
         __u64 dqi_igrace;
-        __u32 dqi_flags;
+        __u32 dqi_flags;        /* DFQ_* */
         __u32 dqi_valid;
 };