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Message-ID: <CAPTn0cBCiRD2s_76QeW0=Ai6DUJSjUERi6AOQeE5=yUrt6izQA@mail.gmail.com>
Date: Fri, 1 Aug 2014 09:07:15 +0800
From: Li Xi <pkuelelixi@...il.com>
To: Ext4 Developers List <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH 2/4] quota: add project quota support
[PATCH 2/4] quota: add project quota support
Enforces project quota limites
This patch adds a new quota type PRJQUOTA for project quota
enforcement.
Signed-off-by: Li Xi <lixi <at> ddn.com>
Signed-off-by: Dmitry Monakhov <dmonakhov@...nvz.org>
---
Index: linux.git/fs/quota/dquot.c
===================================================================
--- linux.git.orig/fs/quota/dquot.c
+++ linux.git/fs/quota/dquot.c
@@ -1170,8 +1170,12 @@ static int need_print_warning(struct dqu
return uid_eq(current_fsuid(), warn->w_dq_id.uid);
case GRPQUOTA:
return in_group_p(warn->w_dq_id.gid);
- case PRJQUOTA: /* Never taken... Just make gcc happy */
+ case PRJQUOTA:
+#ifdef CONFIG_QUOTA_PROJECT
+ return 1;
+#else
return 0;
+#endif
}
return 0;
}
@@ -1418,6 +1422,10 @@ static void __dquot_initialize(struct in
got[cnt] = NULL;
if (type != -1 && cnt != type)
continue;
+#ifndef CONFIG_QUOTA_PROJECT
+ if (cnt == PRJQUOTA)
+ continue;
+#endif
switch (cnt) {
case USRQUOTA:
qid = make_kqid_uid(inode->i_uid);
@@ -1425,6 +1433,9 @@ static void __dquot_initialize(struct in
case GRPQUOTA:
qid = make_kqid_gid(inode->i_gid);
break;
+ case PRJQUOTA:
+ qid = make_kqid_projid(inode->i_projid);
+ break;
}
got[cnt] = dqget(sb, qid);
}
@@ -1954,6 +1965,8 @@ int dquot_transfer(struct inode *inode,
transfer_to[USRQUOTA] = dqget(sb, make_kqid_uid(iattr->ia_uid));
if (iattr->ia_valid & ATTR_GID && !gid_eq(iattr->ia_gid, inode->i_gid))
transfer_to[GRPQUOTA] = dqget(sb, make_kqid_gid(iattr->ia_gid));
+ if (iattr->ia_valid & ATTR_PROJID && !projid_eq(iattr->ia_projid,
inode->i_projid))
+ transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(iattr->ia_projid));
ret = __dquot_transfer(inode, transfer_to);
dqput_all(transfer_to);
Index: linux.git/fs/quota/quotaio_v2.h
===================================================================
--- linux.git.orig/fs/quota/quotaio_v2.h
+++ linux.git/fs/quota/quotaio_v2.h
@@ -13,12 +13,14 @@
*/
#define V2_INITQMAGICS {\
0xd9c01f11, /* USRQUOTA */\
- 0xd9c01927 /* GRPQUOTA */\
+ 0xd9c01927, /* GRPQUOTA */\
+ 0xd9c03f14 /* PRJQUOTA */\
}
#define V2_INITQVERSIONS {\
1, /* USRQUOTA */\
- 1 /* GRPQUOTA */\
+ 1, /* GRPQUOTA */\
+ 1 /* PRJQUOTA */\
}
/* First generic header */
Index: linux.git/include/linux/quota.h
===================================================================
--- linux.git.orig/include/linux/quota.h
+++ linux.git/include/linux/quota.h
@@ -50,6 +50,7 @@
#undef USRQUOTA
#undef GRPQUOTA
+#undef PRJQUOTA
enum quota_type {
USRQUOTA = 0, /* element used for user quotas */
GRPQUOTA = 1, /* element used for group quotas */
Index: linux.git/include/uapi/linux/quota.h
===================================================================
--- linux.git.orig/include/uapi/linux/quota.h
+++ linux.git/include/uapi/linux/quota.h
@@ -36,11 +36,12 @@
#include <linux/errno.h>
#include <linux/types.h>
-#define __DQUOT_VERSION__ "dquot_6.5.2"
+#define __DQUOT_VERSION__ "dquot_6.6.0"
-#define MAXQUOTAS 2
+#define MAXQUOTAS 3
#define USRQUOTA 0 /* element used for user quotas */
#define GRPQUOTA 1 /* element used for group quotas */
+#define PRJQUOTA 2 /* element used for project quotas */
/*
* Definitions for the default names of the quotas files.
@@ -48,6 +49,7 @@
#define INITQFNAMES { \
"user", /* USRQUOTA */ \
"group", /* GRPQUOTA */ \
+ "project", /* PRJQUOTA */ \
"undefined", \
};
Index: linux.git/fs/quota/Kconfig
===================================================================
--- linux.git.orig/fs/quota/Kconfig
+++ linux.git/fs/quota/Kconfig
@@ -17,6 +17,15 @@ config QUOTA
with the quota tools. Probably the quota support is only useful for
multi user systems. If unsure, say N.
+config QUOTA_PROJECT
+ bool "Enable project quota"
+ depends on QUOTA
+ default y
+ help
+ This option enables project inode identifier. Project id
+ may be used as auxiliary owner specifier in addition to
+ standard uid/gid.
+
config QUOTA_NETLINK_INTERFACE
bool "Report quota messages through netlink interface"
depends on QUOTACTL && NET
Index: linux.git/fs/quota/quota.c
===================================================================
--- linux.git.orig/fs/quota/quota.c
+++ linux.git/fs/quota/quota.c
@@ -30,7 +30,10 @@ static int check_quotactl_permission(str
case Q_XGETQSTATV:
case Q_XQUOTASYNC:
break;
- /* allow to query information for dquots we "own" */
+ /*
+ * allow to query information for dquots we "own"
+ * always allow quota check for project quota
+ */
case Q_GETQUOTA:
case Q_XGETQUOTA:
if ((type == USRQUOTA && uid_eq(current_euid(),
make_kuid(current_user_ns(), id))) ||
--
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