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authorRaghavendra Bhat <raghavendrabhat@gluster.com>2010-09-06 05:53:16 +0000
committerVijay Bellur <vijay@dev.gluster.com>2010-09-06 09:37:40 -0700
commit100bec738c83afab77b7b4654397335b1b9cefdf (patch)
tree22da7b0a25f814b7d5b8ee906d0a44e52eb7b4a5 /xlators/mgmt/glusterd/src/glusterd-volgen.c
parentd96a02e48399c79ee5fc3581f28053fcf662fc5f (diff)
do not restrict the size of the subvolume string as it may corrupt the stack for large number of bricks
Signed-off-by: Raghavendra Bhat <raghavendrabhat@gluster.com> Signed-off-by: Vijay Bellur <vijay@dev.gluster.com> BUG: 1536 () URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1536
Diffstat (limited to 'xlators/mgmt/glusterd/src/glusterd-volgen.c')
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-volgen.c82
1 files changed, 74 insertions, 8 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-volgen.c b/xlators/mgmt/glusterd/src/glusterd-volgen.c
index 4369a4a224f..5e93100150a 100644
--- a/xlators/mgmt/glusterd/src/glusterd-volgen.c
+++ b/xlators/mgmt/glusterd/src/glusterd-volgen.c
@@ -737,11 +737,14 @@ __write_replicate_xlator (FILE *file, dict_t *dict,
char *opt_metadatachangelog = NULL;
char *opt_entrychangelog = NULL;
char *opt_strictreaddir = NULL;
- char subvol_str[8192] = {0,};
+ char *subvol_str = NULL;
char tmp[4096] = {0,};
int ret = -1;
int subvolume_count = 0;
int i = 0;
+ int len = 0;
+ int subvol_len = 0;
+
const char *replicate_str = "volume %s-%s-%d\n"
" type cluster/replicate\n"
@@ -842,6 +845,25 @@ __write_replicate_xlator (FILE *file, dict_t *dict,
for (i = 0; i < replicate_count; i++) {
snprintf (tmp, 4096, "%s-%d ", subvolume,
subvolume_count);
+ len = strlen (tmp);
+ subvol_len += len;
+ subvolume_count++;
+ }
+
+ subvolume_count = subvol_count;
+ subvol_len++;
+
+ subvol_str = GF_CALLOC (1, subvol_len, gf_gld_mt_char);
+ if (!subvol_str) {
+ gf_log ("glusterd", GF_LOG_ERROR,
+ "Out of memory");
+ ret = -1;
+ goto out;
+ }
+
+ for (i = 0; i < replicate_count ; i++) {
+ snprintf (tmp, 4096, "%s-%d ", subvolume,
+ subvolume_count);
strncat (subvol_str, tmp, strlen (tmp));
subvolume_count++;
}
@@ -868,6 +890,8 @@ __write_replicate_xlator (FILE *file, dict_t *dict,
ret = 0;
out:
+ if (subvol_str)
+ GF_FREE (subvol_str);
return ret;
}
@@ -881,11 +905,13 @@ __write_stripe_xlator (FILE *file, dict_t *dict,
char *volname = NULL;
char *opt_blocksize = NULL;
char *opt_usexattr = NULL;
- char subvol_str[8192] = {0,};
+ char *subvol_str = NULL;
char tmp[4096] = {0,};
int subvolume_count = 0;
int ret = -1;
int i = 0;
+ int subvol_len = 0;
+ int len = 0;
const char *stripe_str = "volume %s-%s-%d\n"
" type cluster/stripe\n"
@@ -916,6 +942,24 @@ __write_stripe_xlator (FILE *file, dict_t *dict,
for (i = 0; i < stripe_count; i++) {
snprintf (tmp, 4096, "%s-%d ", subvolume, subvolume_count);
+ len = strlen (tmp);
+ subvol_len += len;
+ subvolume_count++;
+ }
+
+ subvolume_count = subvol_count;
+ subvol_len++;
+
+ subvol_str = GF_CALLOC (1, subvol_len, gf_gld_mt_char);
+ if (!subvol_str) {
+ gf_log ("glusterd", GF_LOG_ERROR,
+ "Out of memory");
+ ret = -1;
+ goto out;
+ }
+
+ for (i = 0; i < stripe_count; i++) {
+ snprintf (tmp, 4096, "%s-%d ", subvolume, subvolume_count);
strncat (subvol_str, tmp, strlen (tmp));
subvolume_count++;
}
@@ -932,7 +976,10 @@ __write_stripe_xlator (FILE *file, dict_t *dict,
ret = 0;
out:
+ if (subvol_str)
+ GF_FREE (subvol_str);
return ret;
+
}
static int
@@ -940,15 +987,17 @@ __write_distribute_xlator (FILE *file, dict_t *dict,
char *subvolume,
int dist_count)
{
- char *volname = NULL;
- char subvol_str[8192] = {0,};
- char tmp[4096] = {0,};
+ char *volname = NULL;
+ char *subvol_str = NULL;
+ char tmp[4096] = {0,};
char *opt_lookupunhash = NULL;
char *opt_minfreedisk = NULL;
char *opt_unhashsticky = NULL;
- int ret = -1;
- int i = 0;
-
+ int ret = -1;
+ int i = 0;
+ int subvol_len = 0;
+ int len = 0;
+
const char *dht_str = "volume %s-%s\n"
"type cluster/distribute\n"
"# option lookup-unhashed %s\n"
@@ -982,6 +1031,21 @@ __write_distribute_xlator (FILE *file, dict_t *dict,
for (i = 0; i < dist_count; i++) {
snprintf (tmp, 4096, "%s-%d ", subvolume, i);
+ len = strlen (tmp);
+ subvol_len += len;
+ }
+
+ subvol_len++;
+ subvol_str = GF_CALLOC (1, subvol_len, gf_gld_mt_char);
+ if (!subvol_str) {
+ gf_log ("glusterd", GF_LOG_ERROR,
+ "Out of memory");
+ ret = -1;
+ goto out;
+ }
+
+ for (i = 0; i < dist_count ; i++) {
+ snprintf (tmp, 4096, "%s-%d", subvolume, i);
strncat (subvol_str, tmp, strlen (tmp));
}
@@ -997,6 +1061,8 @@ __write_distribute_xlator (FILE *file, dict_t *dict,
ret = 0;
out:
+ if (subvol_str)
+ GF_FREE (subvol_str);
return ret;
}