multiple files: remove unndeeded memset()

This is a squash of multiple commits:

contrib/fuse-lib/misc.c: remove unneeded memset()

All flock variables are properly set, no need to memset it.

Only compile-tested!

Signed-off-by: Yaniv Kaul <ykaul@redhat.com>

Change-Id: I8e0512c5a88daadb0e587f545fdb9b32ca8858a2

libglusterfs/src/{client_t|fd|inode|stack}.c: remove some memset()

I don't think there's a need for any of them.

Only compile-tested!

Signed-off-by: Yaniv Kaul <ykaul@redhat.com>

Change-Id: I2be9ccc3a5cb5da51a92af73488cdabd1c527f59

libglusterfs/src/xlator.c: remove unneeded memset()

All xl->mem_acct members are properly set,
no need to memset it.

Only compile-tested!

Signed-off-by: Yaniv Kaul <ykaul@redhat.com>

Change-Id: I7f264cd47e7a06255a3f3943c583de77ae8e3147

xlators/cluster/afr/src/afr-self-heal-common.c: remove unneeded memset()

Since we are going over the whole array anyway, initialize it
properly, to either 1 or 0.

Only compile-tested!

Signed-off-by: Yaniv Kaul <ykaul@redhat.com>

Change-Id: Ied4210388976b6a7a2e91cc3de334534d6fef201

xlators/cluster/dht/src/dht-common.c: remove unneeded memset()

Since we are going over the whole array anyway it is initialized
properly.

Only compile-tested!

Signed-off-by: Yaniv Kaul <ykaul@redhat.com>

Change-Id: Idc436d2bd0563b6582908d7cbebf9dbc66a42c9a

xlators/cluster/ec/src/ec-helpers.c: remove unneeded memset()

Since we are going over the whole array anyway it is initialized
properly.

Only compile-tested!

Signed-off-by: Yaniv Kaul <ykaul@redhat.com>

Change-Id: I81bf971f7fcecb4599e807d37f426f55711978fa

xlators/mgmt/glusterd/src/glusterd-volgen.c: remove some memset()

I don't think there's a need for any of them.

Only compile-tested!

Signed-off-by: Yaniv Kaul <ykaul@redhat.com>

Change-Id: I476ea59ba53546b5153c269692cd5383da81ce2d

xlators/mgmt/glusterd/src/glusterd-geo-rep.c: read() in 4K blocks

The current 1K seems small. 4K is usually better (in Linux).

Also remove a memset() that I don't think is needed between reads.

Only compile-tested!

Signed-off-by: Yaniv Kaul <ykaul@redhat.com>

Change-Id: I5fb7950c92d282948376db14919ad12e589eac2b

xlators/storage/posix/src/posix-{gfid-path|inode-fd-ops}.c: remove memset()
before sys_*xattr() functions.

I don't see a reason to memset the array sent to the functions
sys_llistxattr(), sys_lgetxattr(), sys_lgetxattr(), sys_flistxattr(),
sys_fgetxattr().

(Note: it's unclear to me why we are calling sys_*txattr() functions with
XATTR_VAL_BUF_SIZE-1 size instead of XATTR_VAL_BUF_SIZE ).

Only compile-tested!

Change-Id: Ief2103b56ba6c71e40ed343a93684eef6b771346
updates: bz#1193929
Signed-off-by: Yaniv Kaul <ykaul@redhat.com>

7 files changed, 9 insertions, 20 deletions

diff --git a/xlators/cluster/afr/src/afr-self-heal-common.c b/xlators/cluster/afr/src/afr-self-heal-common.c
index a1aad6315ac..be5dd327c9d 100644
--- a/xlators/cluster/afr/src/afr-self-heal-common.c
+++ b/xlators/cluster/afr/src/afr-self-heal-common.c
@@ -851,10 +851,11 @@ afr_mark_active_sinks (xlator_t *this, unsigned char *sources,
 
         priv = this->private;
 
-        memset (sinks, 0, sizeof (*sinks) * priv->child_count);
         for (i = 0; i < priv->child_count; i++) {
                 if (!sources[i] && locked_on[i])
                         sinks[i] = 1;
+                else
+                        sinks[i] = 0;
         }
 }
 
@@ -1610,10 +1611,11 @@ afr_selfheal_find_direction (call_frame_t *frame, xlator_t *this,
 	}
 
 	/* Short list all non-accused as sources */
-	memset (sources, 0, priv->child_count);
 	for (i = 0; i < priv->child_count; i++) {
 		if (!accused[i] && locked_on[i])
 			sources[i] = 1;
+                else
+                        sources[i] = 0;
 	}
 
         /* Everyone accused by non-self-accused sources are sinks */
diff --git a/xlators/cluster/dht/src/dht-common.c b/xlators/cluster/dht/src/dht-common.c
index 9ae80b33fe3..d5b41eb9b3b 100644
--- a/xlators/cluster/dht/src/dht-common.c
+++ b/xlators/cluster/dht/src/dht-common.c
@@ -1255,7 +1255,6 @@ dht_dict_get_array (dict_t *dict, char *key, int32_t value[], int32_t size, int
                 return -EINVAL;
         }
 
-        memset (value, 0, size * sizeof(int32_t));
         for (vindex = 0; vindex < size; vindex++) {
                 value[vindex] = ntoh32(*((int32_t *)ptr + vindex));
                 if (value[vindex] < 0)
diff --git a/xlators/cluster/ec/src/ec-helpers.c b/xlators/cluster/ec/src/ec-helpers.c
index 9b833a8d3a4..ff3558def86 100644
--- a/xlators/cluster/ec/src/ec-helpers.c
+++ b/xlators/cluster/ec/src/ec-helpers.c
@@ -232,7 +232,6 @@ ec_dict_get_array (dict_t *dict, char *key, uint64_t value[], int32_t size)
         return -EINVAL;
     }
 
-    memset (value, 0, size * sizeof(uint64_t));
     /* 3.6 version ec would have stored version in 64 bit. In that case treat
      * metadata versions same as data*/
     old_size = min (size, len/sizeof(uint64_t));
diff --git a/xlators/mgmt/glusterd/src/glusterd-geo-rep.c b/xlators/mgmt/glusterd/src/glusterd-geo-rep.c
index 7083fb1d339..ac07eb83bd8 100644
--- a/xlators/mgmt/glusterd/src/glusterd-geo-rep.c
+++ b/xlators/mgmt/glusterd/src/glusterd-geo-rep.c
@@ -3848,7 +3848,7 @@ gd_pause_or_resume_gsync (dict_t *dict, char *master, char *slave,
         pid_t           pid                      = 0;
         char            pidfile[PATH_MAX]        = {0,};
         char            errmsg[PATH_MAX]         = "";
-        char            buf [1024]               = {0,};
+        char            buf [4096]               = {0,};
         gf_boolean_t    is_template_in_use       = _gf_false;
         char            monitor_status[NAME_MAX] = {0,};
         char            *statefile               = NULL;
@@ -3903,7 +3903,7 @@ gd_pause_or_resume_gsync (dict_t *dict, char *master, char *slave,
                 goto out;
         }
 
-        ret = sys_read (pfd, buf, 1024);
+        ret = sys_read (pfd, buf, sizeof (buf));
         if (ret > 0) {
                 pid = strtol (buf, NULL, 10);
                 if (is_pause) {
@@ -4006,7 +4006,7 @@ stop_gsync (char *master, char *slave, char **msg,
         pid_t           pid     = 0;
         char            pidfile[PATH_MAX] = {0,};
         char            errmsg[PATH_MAX] = "";
-        char            buf[1024] = {0,};
+        char            buf[4096] = {0,};
         int             i       = 0;
         gf_boolean_t    is_template_in_use = _gf_false;
         xlator_t        *this   = NULL;
@@ -4039,7 +4039,7 @@ stop_gsync (char *master, char *slave, char **msg,
         if (pfd < 0)
                 goto out;
 
-        ret = sys_read (pfd, buf, 1024);
+        ret = sys_read (pfd, buf, sizeof (buf));
         if (ret > 0) {
                 pid = strtol (buf, NULL, 10);
                 ret = kill (-pid, SIGTERM);
@@ -5345,7 +5345,7 @@ glusterd_op_copy_file (dict_t *dict, char **op_errstr)
         char            *host_uuid              = NULL;
         char             uuid_str [64]          = {0};
         char            *contents               = NULL;
-        char             buf[1024]              = "";
+        char             buf[4096]              = "";
         int              ret                    = -1;
         int              fd                     = -1;
         int              bytes_writen           = 0;
@@ -5436,7 +5436,6 @@ glusterd_op_copy_file (dict_t *dict, char **op_errstr)
                         if (ret > 0) {
                                 memcpy (contents+bytes_read, buf, ret);
                                 bytes_read += ret;
-                                memset (buf, '\0', sizeof(buf));
                         }
                 } while (ret > 0);
 
diff --git a/xlators/mgmt/glusterd/src/glusterd-volgen.c b/xlators/mgmt/glusterd/src/glusterd-volgen.c
index 614ce0eab23..35e49bf56fc 100644
--- a/xlators/mgmt/glusterd/src/glusterd-volgen.c
+++ b/xlators/mgmt/glusterd/src/glusterd-volgen.c
@@ -6121,7 +6121,6 @@ generate_dummy_client_volfiles (glusterd_volinfo_t *volinfo)
         if (!dict)
                 goto out;
         for (i = 0; types[i]; i++) {
-                memset (filepath, 0, sizeof (filepath));
                 ret = dict_set_str (dict, "client-transport-type", types[i]);
                 if (ret)
                         goto out;
@@ -6195,7 +6194,6 @@ generate_client_volfiles (glusterd_volinfo_t *volinfo,
         if (!dict)
                 goto out;
         for (i = 0; types[i]; i++) {
-                memset (filepath, 0, sizeof (filepath));
                 ret = dict_set_str (dict, "client-transport-type", types[i]);
                 if (ret)
                         goto out;
diff --git a/xlators/storage/posix/src/posix-gfid-path.c b/xlators/storage/posix/src/posix-gfid-path.c
index 9873e7e5a84..686276eb5a9 100644
--- a/xlators/storage/posix/src/posix-gfid-path.c
+++ b/xlators/storage/posix/src/posix-gfid-path.c
@@ -145,7 +145,6 @@ posix_get_gfid2path (xlator_t *this, inode_t *inode, const char *real_path,
                 found = _gf_true;
         } else {
                 have_val = _gf_false;
-                memset (value_buf, '\0', sizeof(value_buf));
                 size = sys_llistxattr (real_path, value_buf,
                                        sizeof (value_buf) - 1);
                 if (size > 0) {
@@ -205,7 +204,6 @@ posix_get_gfid2path (xlator_t *this, inode_t *inode, const char *real_path,
                         }
 
                         found = _gf_true;
-                        memset (value_buf, '\0', sizeof(value_buf));
                         size = sys_lgetxattr (real_path, keybuffer, value_buf,
                                               sizeof (value_buf) - 1);
                         if (size == -1) {
diff --git a/xlators/storage/posix/src/posix-inode-fd-ops.c b/xlators/storage/posix/src/posix-inode-fd-ops.c
index 1d15801b183..795f19a1515 100644
--- a/xlators/storage/posix/src/posix-inode-fd-ops.c
+++ b/xlators/storage/posix/src/posix-inode-fd-ops.c
@@ -3184,7 +3184,6 @@ posix_getxattr (call_frame_t *frame, xlator_t *this,
                         }
                 }
 #endif
-                memset (value_buf, '\0', XATTR_VAL_BUF_SIZE);
                 size = sys_lgetxattr (real_path, key, value_buf,
                                       XATTR_VAL_BUF_SIZE-1);
                 if (size >= 0) {
@@ -3259,7 +3258,6 @@ posix_getxattr (call_frame_t *frame, xlator_t *this,
         }
 
         have_val = _gf_false;
-        memset (value_buf, '\0', XATTR_VAL_BUF_SIZE);
         size = sys_llistxattr (real_path, value_buf, XATTR_VAL_BUF_SIZE-1);
         if (size > 0) {
                 have_val = _gf_true;
@@ -3326,7 +3324,6 @@ posix_getxattr (call_frame_t *frame, xlator_t *this,
                         goto ignore;
                 }
 
-                memset (value_buf, '\0', XATTR_VAL_BUF_SIZE);
                 have_val = _gf_false;
                 size = sys_lgetxattr (real_path, keybuffer, value_buf,
                                       XATTR_VAL_BUF_SIZE-1);
@@ -3494,7 +3491,6 @@ posix_fgetxattr (call_frame_t *frame, xlator_t *this,
            allocate a new buffer value of required size and call getxattr again
         */
         value_buf = alloca (XATTR_VAL_BUF_SIZE);
-        memset (value_buf, '\0', XATTR_VAL_BUF_SIZE);
 
         if (name) {
                 strncpy (key, name, sizeof(key));
@@ -3570,7 +3566,6 @@ posix_fgetxattr (call_frame_t *frame, xlator_t *this,
 
                 goto done;
         }
-        memset (value_buf, '\0', XATTR_VAL_BUF_SIZE);
         size = sys_flistxattr (_fd, value_buf, XATTR_VAL_BUF_SIZE-1);
         if (size > 0) {
                 have_val = _gf_true;
@@ -3619,7 +3614,6 @@ posix_fgetxattr (call_frame_t *frame, xlator_t *this,
                         break;
 
                 strncpy (key, list + list_offset, sizeof(key));
-                memset (value_buf, '\0', XATTR_VAL_BUF_SIZE);
                 have_val = _gf_false;
                 size = sys_fgetxattr (_fd, key, value_buf,
                                       XATTR_VAL_BUF_SIZE-1);