features/quota: handle failed fops gracefully.

Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Anand Avati <avati@gluster.com>

BUG: 2701 ([6db2b422f05d0553d0a83af603ae4d176b41cbdf]: crash in quota_readlink_cbk)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2701

1 files changed, 39 insertions, 11 deletions

diff --git a/xlators/features/quota/src/quota.c b/xlators/features/quota/src/quota.c
index 3a2c26daa..6fac7572f 100644
--- a/xlators/features/quota/src/quota.c
+++ b/xlators/features/quota/src/quota.c
@@ -193,15 +193,15 @@ quota_validate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         uint64_t           value          = 0;
         call_stub_t       *stub           = NULL;
 
+        if (op_ret < 0) {
+                goto unwind;
+        }
+
         local = frame->local;
         GF_ASSERT (local);
 
         priv = this->private;
 
-        if (op_ret == -1) {
-                goto unwind;
-        }
-
         GF_ASSERT (frame);
         GF_VALIDATE_OR_GOTO_WITH_ERROR ("quota", this, unwind, op_errno,
                                         EINVAL);
@@ -774,7 +774,7 @@ quota_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 
         local = frame->local;
 
-        if ((op_ret == -1) || (local == NULL)) {
+        if ((op_ret < 0) || (local == NULL)) {
                 goto out;
         }
 
@@ -1187,7 +1187,7 @@ quota_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         quota_inode_ctx_t *ctx   = NULL;
         uint64_t           value = 0;
 
-        if (op_ret == -1) {
+        if (op_ret < 0) {
                 goto out;
         }
 
@@ -1259,7 +1259,7 @@ quota_link_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         quota_dentry_t       *dentry       = NULL;
         char                  found        = 0;
 
-        if (op_ret == -1) {
+        if (op_ret < 0) {
                 goto out;
         }
 
@@ -1441,7 +1441,7 @@ quota_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         char                  new_dentry_found = 0;
         int64_t               size             = 0;
 
-        if (op_ret == -1) {
+        if (op_ret < 0) {
                 goto out;
         }
 
@@ -1672,7 +1672,7 @@ quota_symlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         quota_inode_ctx_t *ctx    = NULL;
         quota_dentry_t    *dentry = NULL;
 
-        if (op_ret == -1) {
+        if (op_ret < 0) {
                 goto out;
         }
 
@@ -1819,7 +1819,7 @@ quota_truncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         int64_t            delta = 0;
         quota_inode_ctx_t *ctx   = NULL;
 
-        if (op_ret == -1) {
+        if (op_ret < 0) {
                 goto out;
         }
 
@@ -1895,7 +1895,7 @@ quota_ftruncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         int64_t            delta = 0;
         quota_inode_ctx_t *ctx   = NULL;
 
-        if (op_ret == -1) {
+        if (op_ret < 0) {
                 goto out;
         }
 
@@ -2040,6 +2040,10 @@ quota_stat_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         quota_local_t     *local = NULL;
         quota_inode_ctx_t *ctx   = NULL;
 
+        if (op_ret < 0) {
+                goto out;
+        }
+
         local = frame->local;
         if (local == NULL) {
                 gf_log (this->name, GF_LOG_WARNING, "local is NULL");
@@ -2104,6 +2108,10 @@ quota_fstat_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         quota_local_t     *local = NULL;
         quota_inode_ctx_t *ctx   = NULL;
 
+        if (op_ret < 0) {
+                goto out;
+        }
+
         local = frame->local;
         if (local == NULL) {
                 gf_log (this->name, GF_LOG_WARNING, "local is NULL");
@@ -2163,6 +2171,10 @@ quota_readlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         quota_local_t     *local = NULL;
         quota_inode_ctx_t *ctx   = NULL;
 
+        if (op_ret < 0) {
+                goto out;
+        }
+
         local = frame->local;
         if (local == NULL) {
                 gf_log (this->name, GF_LOG_WARNING, "local is NULL");
@@ -2228,6 +2240,10 @@ quota_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         quota_local_t     *local = NULL;
         quota_inode_ctx_t *ctx   = NULL;
 
+        if (op_ret < 0) {
+                goto out;
+        }
+
         local = frame->local;
         if (local == NULL) {
                 gf_log (this->name, GF_LOG_WARNING, "local is NULL");
@@ -2288,6 +2304,10 @@ quota_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         quota_local_t     *local = NULL;
         quota_inode_ctx_t *ctx   = NULL;
 
+        if (op_ret < 0) {
+                goto out;
+        }
+
         local = frame->local;
         if (local == NULL) {
                 gf_log (this->name, GF_LOG_WARNING, "local is NULL");
@@ -2347,6 +2367,10 @@ quota_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         quota_local_t     *local = NULL;
         quota_inode_ctx_t *ctx   = NULL;
 
+        if (op_ret < 0) {
+                goto out;
+        }
+
         local = frame->local;
         if (local == NULL) {
                 gf_log (this->name, GF_LOG_WARNING, "local is NULL");
@@ -2415,6 +2439,10 @@ quota_fsetattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         quota_local_t     *local = NULL;
         quota_inode_ctx_t *ctx   = NULL;
 
+        if (op_ret < 0) {
+                goto out;
+        }
+
         local = frame->local;
         if (local == NULL) {
                 gf_log (this->name, GF_LOG_WARNING, "local is NULL");