bk commit into 4.1 tree (tsmith:1.2540) BUG#4053

[tim]

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ChangeSet@stripped, 2006-09-14 21:06:14-06:00, tsmith@stripped +1 -0
  Bug #4053: too many of "error 1236: 'binlog truncated in the middle of event' from
master"
  - Detect read failure in my_read_charset_file

  mysys/charset.c@stripped, 2006-09-14 21:05:03-06:00, tsmith@stripped +9 -6
    Use my_read instead of read(), and detect read failure, in my_read_charset_file()

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	tsmith
# Host:	siva.hindu.god
# Root:	/usr/home/tim/m/bk/tmp/41

--- 1.143/mysys/charset.c	2006-09-14 21:06:18 -06:00
+++ 1.144/mysys/charset.c	2006-09-14 21:06:18 -06:00
@@ -312,7 +312,7 @@ static my_bool my_read_charset_file(cons
 {
   char *buf;
   int  fd;
-  uint len;
+  uint len, tmp_len;
   MY_STAT stat_info;
   
   if (!my_stat(filename, &stat_info, MYF(myflags)) ||
@@ -321,12 +321,11 @@ static my_bool my_read_charset_file(cons
     return TRUE;
   
   if ((fd=my_open(filename,O_RDONLY,myflags)) < 0)
-  {
-    my_free(buf,myflags);
-    return TRUE;
-  }
-  len=read(fd,buf,len);
+    goto error;
+  tmp_len=my_read(fd, buf, len, myflags);
   my_close(fd,myflags);
+  if (tmp_len != len)
+    goto error;
   
   if (my_parse_charset_xml(buf,len,add_collation))
   {
@@ -340,6 +339,10 @@ static my_bool my_read_charset_file(cons
   
   my_free(buf, myflags);  
   return FALSE;
+
+error:
+  my_free(buf, myflags);
+  return TRUE;
 }