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Date: Wed, 29 Apr 2015 20:54:34 +0200
From: Fabian Frederick <fabf@...net.be>
To: linux-kernel@...r.kernel.org
Cc: Fabian Frederick <fabf@...net.be>,
Steven Whitehouse <swhiteho@...hat.com>,
Bob Peterson <rpeterso@...hat.com>, cluster-devel@...hat.com
Subject: [RFC 1/1 linux-next] gfs2: convert simple_str to kstr
-Remove obsolete simple_str functions.
-Return error code when kstr failed.
-This patch also calls functions corresponding to destination type.
Basically it's an RFC because of the type mismatch all over the place.
ie code was doing simple_strtol to integer...
Newer kstr functions detect such problems.
By default I used destination type as a reference. Maybe it's wrong and we
really want to read long, unsigned long from source ?
Signed-off-by: Fabian Frederick <fabf@...net.be>
---
fs/gfs2/sys.c | 56 ++++++++++++++++++++++++++++++++++++++++++++------------
1 file changed, 44 insertions(+), 12 deletions(-)
diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c
index ae8e881..436bdeb 100644
--- a/fs/gfs2/sys.c
+++ b/fs/gfs2/sys.c
@@ -101,8 +101,11 @@ static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf)
static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
{
- int error;
- int n = simple_strtol(buf, NULL, 0);
+ int error, n;
+
+ error = kstrtoint(buf, 0, &n);
+ if (error)
+ return error;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
@@ -134,10 +137,16 @@ static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf)
static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
{
+ int error, val;
+
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
- if (simple_strtol(buf, NULL, 0) != 1)
+ error = kstrtoint(buf, 0, &val);
+ if (error)
+ return error;
+
+ if (val != -1)
return -EINVAL;
gfs2_lm_withdraw(sdp, "withdrawing from cluster at user's request\n");
@@ -148,10 +157,16 @@ static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf,
size_t len)
{
+ int error, val;
+
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
- if (simple_strtol(buf, NULL, 0) != 1)
+ error = kstrtoint(buf, 0, &val);
+ if (error)
+ return error;
+
+ if (val != -1)
return -EINVAL;
gfs2_statfs_sync(sdp->sd_vfs, 0);
@@ -161,10 +176,16 @@ static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf,
static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf,
size_t len)
{
+ int error, val;
+
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
- if (simple_strtol(buf, NULL, 0) != 1)
+ error = kstrtoint(buf, 0, &val);
+ if (error)
+ return error;
+
+ if (val != -1)
return -EINVAL;
gfs2_quota_sync(sdp->sd_vfs, 0);
@@ -181,7 +202,9 @@ static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf,
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
- id = simple_strtoul(buf, NULL, 0);
+ error = kstrtou32(buf, 0, &id);
+ if (error)
+ return error;
qid = make_kqid(current_user_ns(), USRQUOTA, id);
if (!qid_valid(qid))
@@ -201,7 +224,9 @@ static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf,
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
- id = simple_strtoul(buf, NULL, 0);
+ error = kstrtou32(buf, 0, &id);
+ if (error)
+ return error;
qid = make_kqid(current_user_ns(), GRPQUOTA, id);
if (!qid_valid(qid))
@@ -325,9 +350,11 @@ static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
{
struct lm_lockstruct *ls = &sdp->sd_lockstruct;
ssize_t ret = len;
- int val;
+ int val, error;
- val = simple_strtol(buf, NULL, 0);
+ error = kstrtoint(buf, 0, &val);
+ if (error)
+ return error;
if (val == 1)
set_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags);
@@ -351,9 +378,11 @@ static ssize_t wdack_show(struct gfs2_sbd *sdp, char *buf)
static ssize_t wdack_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
{
ssize_t ret = len;
- int val;
+ int val, error;
- val = simple_strtol(buf, NULL, 0);
+ error = kstrtoint(buf, 0, &val);
+ if (error)
+ return error;
if ((val == 1) &&
!strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm"))
@@ -553,11 +582,14 @@ static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field,
{
struct gfs2_tune *gt = &sdp->sd_tune;
unsigned int x;
+ int error;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
- x = simple_strtoul(buf, NULL, 0);
+ error = kstrtouint(buf, 0, &x);
+ if (error)
+ return error;
if (check_zero && !x)
return -EINVAL;
--
1.9.1
--
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