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Date: Tue, 5 May 2015 19:18:31 +0200
From: Fabian Frederick <fabf@...net.be>
To: linux-kernel@...r.kernel.org
Cc: Bob Peterson <rpeterso@...hat.com>,
Alexey Dobriyan <adobriyan@...il.com>,
Fabian Frederick <fabf@...net.be>,
Steven Whitehouse <swhiteho@...hat.com>,
cluster-devel@...hat.com
Subject: [PATCH V3 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.
Thanks to Alexey Dobriyan for suggesting improvements in
block_store() and wdack_store()
Signed-off-by: Fabian Frederick <fabf@...net.be>
---
V3: -Compare kstr return values to 1 not -1 (suggested by Bob Peterson)
-Add {} parity (suggested by Bob Peterson)
V2: -Improve block_store() / wdack_store() (suggested by Alexey Dobriyan)
fs/gfs2/sys.c | 66 +++++++++++++++++++++++++++++++++++++++++++----------------
1 file changed, 48 insertions(+), 18 deletions(-)
diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c
index ae8e881..c9ff1cf 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))
@@ -324,10 +349,11 @@ static ssize_t block_show(struct gfs2_sbd *sdp, char *buf)
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 ret, val;
- val = simple_strtol(buf, NULL, 0);
+ ret = kstrtoint(buf, 0, &val);
+ if (ret)
+ return ret;
if (val == 1)
set_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags);
@@ -336,9 +362,9 @@ static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
smp_mb__after_atomic();
gfs2_glock_thaw(sdp);
} else {
- ret = -EINVAL;
+ return -EINVAL;
}
- return ret;
+ return len;
}
static ssize_t wdack_show(struct gfs2_sbd *sdp, char *buf)
@@ -350,17 +376,18 @@ 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 ret, val;
- val = simple_strtol(buf, NULL, 0);
+ ret = kstrtoint(buf, 0, &val);
+ if (ret)
+ return ret;
if ((val == 1) &&
!strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm"))
complete(&sdp->sd_wdack);
else
- ret = -EINVAL;
- return ret;
+ return -EINVAL;
+ return len;
}
static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf)
@@ -553,11 +580,14 @@ 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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