Notice (2018-05-24): bugzilla.xamarin.com is now in
Please join us on
Visual Studio Developer Community and in the
Mono organizations on
GitHub to continue tracking issues. Bugzilla will remain
available for reference in read-only mode. We will continue to work
on open Bugzilla bugs, copy them to the new locations
as needed for follow-up, and add the new items under Related
Our sincere thanks to everyone who has contributed on this bug
tracker over the years. Thanks also for your understanding as we
make these adjustments and improvements for the future.
Please create a new report on
GitHub or Developer Community with
your current version information, steps to reproduce, and relevant error
messages or log files if you are hitting an issue that looks similar to
this resolved bug and you do not yet see a matching new report.
public static extern int chown (string path, uint owner, uint group);
public static extern int chown (string path, int owner, int group);
To allow for
If the owner or group is specified as -1, then that ID is not changed.
This workaround has worked for me so far
private const uint NO_CHANGE_ID = 4294967295; //int -1
Where i can use
int result = Mono.Unix.Native.Syscall.chown(path, ownerId, NO_CHANGE_ID);
int result = Mono.Unix.Native.Syscall.chown(path, NO_CHANGE_ID, groupId);
On OS X, Linux, and Android (Linux), uid_t is actually an unsigned integer, i.e. a `uint`, which is why Syscall.chown() uses `uint` as the parameter type.
Additionally, this is trivially worked around by using `unchecked`:
int r = Syscall.chown(path, unchecked((uint)-1), groupId);