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This patch should fix the chdir problem reported by Jason Tishler. It deimpersonates while reading the mounts and cygdrive in HKLM. For ease of initialization, the unused cygheap->user tokens are now set to NO_IMPERSONATION (instead of INVALID_HANDLE_VALUE), which is #defined as NULL. If the argument of cygwin_set_impersonation_token() is INVALID_HANDLE_VALUE, it is changed to NO_IMPERSONATION. Pierre 2004-10-28 Pierre Humblet <pierre.humblet@ieee.org> * path.cc (mount_info::from_registry): Deimpersonate while accessing HKLM. (mount_info::read_cygdrive_info_from_registry): Ditto. * cygheap.h: Define NO_IMPERSONATION. (cygheap_user::issetuid): Replace INVALID_HANDLE_VALUE by NO_IMPERSONATION. (cygheap_user::has_impersonation_tokens): Ditto. (cygheap_user::close_impersonation_tokens): Ditto. * uinfo.cc (uinfo_init): Ditto. * syscalls.cc (seteuid32): Ditto. * security.cc (set_impersonation_token): Ditto.
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