[Bugs] [Bug 1201622] New: Convert quota size from n-to-h order before using it

bugzilla at redhat.com bugzilla at redhat.com
Fri Mar 13 06:14:27 UTC 2015


https://bugzilla.redhat.com/show_bug.cgi?id=1201622

            Bug ID: 1201622
           Summary: Convert quota size from n-to-h order before using it
           Product: GlusterFS
           Version: 3.6.2
         Component: replicate
          Keywords: Triaged
          Assignee: bugs at gluster.org
          Reporter: kdhananj at redhat.com
                CC: bugs at gluster.org, gluster-bugs at redhat.com
        Depends On: 1200670



+++ This bug was initially created as a clone of Bug #1200670 +++

Description of problem:

Figured while reading code that AFR is NOT converting quota_size value from
network to host byte order before using it in comparisons towards getting the
max size. This can cause problems with max_size calculation when the client is
running on a little endian machine.

0 afr_handle_quota_size (call_frame_t *frame, xlator_t *this)                   
  1 {                                                                           
  2         unsigned char *readable = NULL;                                     
  3         afr_local_t *local = NULL;                                          
  4         afr_private_t *priv = NULL;                                         
  5         struct afr_reply *replies = NULL;                                   
  6         int i = 0;                                                          
  7         uint64_t size = 0;                                                  
  8         uint64_t max_size = 0;                                              
  9         int readable_cnt = 0;                                               
 10         int read_subvol = -1;                                               
 11                                                                             
 12         local = frame->local;                                               
 13         priv = this->private;                                               
 14         replies = local->replies;                                           
 15                                                                             
 16         readable = alloca0 (priv->child_count);                             
 17                                                                             
 18         afr_inode_read_subvol_get (local->inode, this, readable, 0, 0);     
 19                                                                             
 20         readable_cnt = AFR_COUNT (readable, priv->child_count);             
 21                                                                             
 22         for (i = 0; i < priv->child_count; i++) {                           
 23                 if (!replies[i].valid || replies[i].op_ret == -1)           
 24                         continue;                                           
 25                 if (readable_cnt && !readable[i])                           
 26                         continue;                                           
 27                 if (!replies[i].xdata)                                      
 28                         continue;                                           
 29                 if (dict_get_uint64 (replies[i].xdata, QUOTA_SIZE_KEY,
&size))         <---------- here
 30                         continue;                                           
 32                 if (read_subvol == -1)                                      
 33                         read_subvol = i;                                    
 34                 if (size > max_size) {                                      
 35                         read_subvol = i;                                    
 36                         max_size = size;                                    
 37                 }                                                           
 38         }                                                                   
 39                                                                             
 40         if (!max_size)                                                      
 41                 return read_subvol;                                         
 44                                                                             
 45         for (i = 0; i < priv->child_count; i++) {                           
 46                 if (!replies[i].valid || replies[i].op_ret == -1)           
 47                         continue;                                           
 48                 if (readable_cnt && !readable[i])                           
 49                         continue;                                           
 50                 if (!replies[i].xdata)                                      
 51                         continue;                                           
 52                 if (dict_set_uint64 (replies[i].xdata, QUOTA_SIZE_KEY,
max_size))       <------ and here
 53                         continue;                                           
 54         }                                                                   
 55                                                                             
 56         return read_subvol;                                                 
 57 }                                                                  



Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:

--- Additional comment from Anand Avati on 2015-03-11 02:58:22 EDT ---

REVIEW: http://review.gluster.org/9853 (cluster/afr: Convert quota size from
n/w to host order before use) posted (#1) for review on master by Krutika
Dhananjay (kdhananj at redhat.com)

--- Additional comment from Anand Avati on 2015-03-12 07:44:55 EDT ---

REVIEW: http://review.gluster.org/9853 (cluster/afr: Convert quota size from
n/w to host order before use) posted (#2) for review on master by Krutika
Dhananjay (kdhananj at redhat.com)

--- Additional comment from Anand Avati on 2015-03-13 02:02:04 EDT ---

COMMIT: http://review.gluster.org/9853 committed in master by Pranith Kumar
Karampuri (pkarampu at redhat.com) 
------
commit 65c68fb75640be2c5744782081250dda886a7b56
Author: Krutika Dhananjay <kdhananj at redhat.com>
Date:   Tue Mar 10 22:11:57 2015 +0530

    cluster/afr: Convert quota size from n/w to host order before use

    Change-Id: I3e4fe15716556441546fcd62b8ac2833869b21cf
    BUG: 1200670
    Signed-off-by: Krutika Dhananjay <kdhananj at redhat.com>
    Reviewed-on: http://review.gluster.org/9853
    Reviewed-by: Ravishankar N <ravishankar at redhat.com>
    Reviewed-by: Anuradha Talur <atalur at redhat.com>
    Tested-by: Gluster Build System <jenkins at build.gluster.com>
    Reviewed-by: Pranith Kumar Karampuri <pkarampu at redhat.com>
    Tested-by: Pranith Kumar Karampuri <pkarampu at redhat.com>


Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1200670
[Bug 1200670] Convert quota size from n-to-h order before using it
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