我知道之前已经多次询问过，但我相信我的情况有所不同。
我正在尝试向SVN存储库添加一个pre-revprop-change挂钩，以便对日志消息进行更改。
在我添加之前 pre-revprop-change 文件我收到此错误：
$ svn propset -r 557 --revprop svn:log "New message!" https://myserver/repos/myrepo
svn: DAV request failed; it's possible that the repository's pre-revprop-change hook either failed or is non-existent
svn: At least one property change failed; repository is unchanged
svn: Error setting property 'log':
Repository has not been enabled to accept revision propchanges;
ask the administrator to create a pre-revprop-change hook
没问题，我想。我会加上它：
$ cd /var/www/svn/myrepo/hooks
$ # Create the simplest hook possible
$ echo '#!/bin/sh' > pre-revprop-change
$ echo 'exit 0' >> pre-revprop-change
$ # Check that it looks correct
$ cat pre-revprop-change
#!/bin/sh
exit 0
$ # Looks good, now make it executable
$ chmod a+x pre-revprop-change
$ # Check the permissions
$ ls -al pre-revprop-change
-rwxr-xr-x 1 apache apache 17 2012-05-24 12:05 pre-revprop-change
$ # Run it, to make sure it runs, and check the error code
$ ./pre-revprop-change
$ echo $?
0
所以，根据我在SO上阅读的其他内容，应该是我需要的全部工作。但是，当我再次尝试编辑日志消息时，我仍然会收到错误（这次是另一个错误）：
$ svn propset -r 557 --revprop svn:log "New message!" https://myserver/repos/myrepo
svn: DAV request failed; it's possible that the repository's pre-revprop-change hook either failed or is non-existent
svn: At least one property change failed; repository is unchanged
svn: Error setting property 'log':
Revprop change blocked by pre-revprop-change hook (exit code 255) with no output.
有几点需要注意：
1）存储库托管在SELinux服务器（Fedora核心10）上。也许在这些权限方面我需要做些什么？以下是钩子的SE权限：
$ ls -alZ pre-revprop-change
-rwxr-xr-x apache apache unconfined_u:object_r:httpd_sys_content_rw_t:s0 pre-revprop-change
2）通过WebDAV访问存储库（注意 https:// 在存储库名称中）。我是否需要在WebDAV端设置一些内容以允许更改前的更改？