No effect of SE_BACKUP_NAME privilege on cygwin?

[Christian Franke]

Enabling SE_BACKUP_NAME has no effect for cygwin programs.

The attached program demonstrates the issue.
It retrieves the attributes of a normally inaccessible file without and 
with SE_BACKUP_NAME.
(The file should be present on XP with C:\ as system drive)

If compiled with "-mno-cygwin" and running as admin on XP Prof, the 
second access succeeds as expected:

GetFileAttributes failed: 5
SeBackupPrivilege enabled!
GetFileAttributes = 0x0026

But if running as a cygwin program on 1.5.19, the result is:

GetFileAttributes failed: 5
SeBackupPrivilege enabled!
GetFileAttributes failed: 5

The privilege can be enabled, but has no effect - bug or feature ?-)

Thanks for any help.

Christian

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