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1 Commits

Author SHA1 Message Date
ggtakec@gmail.com
d7689151ab Fixed Issue 229 and Changes codes
1) Set metadata "Content-Encoding" automatically(Issue 292)
   For this issue, s3fs is added new option "ahbe_conf".

   New option means the configuration file path, and this file specifies
   additional HTTP header by file(object) extension.
   Thus you can specify any HTTP header for each object by extension.

   * ahbe_conf file format:
     -----------
     line                = [file suffix] HTTP-header [HTTP-header-values]
     file suffix         = file(object) suffix, if this field is empty, 
                           it means "*"(all object).
     HTTP-header         = additional HTTP header name
     HTTP-header-values  = additional HTTP header value
     -----------

   * Example:
     -----------
     .gz      Content-Encoding     gzip
     .Z       Content-Encoding     compress
              X-S3FS-MYHTTPHEAD    myvalue
     -----------
     A sample configuration file is uploaded in "test" directory.

   If ahbe_conf parameter is specified, s3fs loads it's configuration
   and compares extension(suffix) of object(file) when uploading
   (PUT/POST) it. If the extension is same, s3fs adds/sends specified
   HTTP header and value.

   A case of sample configuration file, if a object(it's extension is
   ".gz") which already has Content-Encoding HTTP header is renamed 
   to ".txt" extension, s3fs does not set Content-Encoding. Because
   ".txt" is not match any line in configuration file.
   So, s3fs matches the extension by each PUT/POST action.

   * Please take care about "Content-Encoding".
   This new option allows setting ANY HTTP header by object extension.
   For example, you can specify "Content-Encoding" for ".gz"/etc 
   extension in configuration. But this means that S3 always returns 
   "Content-Encoding: gzip" when a client requests with other 
   "Accept-Encoding:" header. It SHOULD NOT be good.
   Please see RFC 2616.

2) Changes about allow_other/uid/gid option for mount point
   I reviewed about mount point permission and allow_other/uid/gid
   options, and found bugs about these.
   s3fs is fixed bugs and changed to the following specifications.

   * s3fs only allows uid(gid) options as 0(root), when the effective 
     user is zero(root).
   * A mount point(directory) must have a permission to allow
     accessing by effective user/group.
   * If allow_other option is specified, the mount point permission
     is set 0777(all users allow all access).
     In another case, the mount point is set 0700(only allows 
     effective user).
   * When uid/gid option is specified, the mount point owner/group
     is set uid/gid option value.
     If uid/gid is not set, it is set effective user/group id.

   This changes maybe fixes some issue(321, 338).

3) Changes a logic about (Issue 229)
   The chmod command returns -EIO when changing the mount point.
   It is correct, s3fs can not changed owner/group/mtime for the
   mount point, but s3fs sends a request for changing the bucket.
   This revision does not send the request, and returns EIO as
   soon as possible.




git-svn-id: http://s3fs.googlecode.com/svn/trunk@465 df820570-a93a-0410-bd06-b72b767a4274
2013-08-16 19:24:01 +00:00