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From: Corinna Vinschen <corinna@sourceware.org> To: cygwin-cvs@sourceware.org Subject: [newlib-cygwin/main] Cygwin: get/set security descriptors using FILE_OPEN_NO_RECALL Date: Fri, 8 Mar 2024 20:31:12 +0000 (GMT) [thread overview] Message-ID: <20240308203112.7DDF93858D33@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=2100c6ef0dee120c316b7bea42bf5e93c281e808 commit 2100c6ef0dee120c316b7bea42bf5e93c281e808 Author: Corinna Vinschen <corinna@vinschen.de> AuthorDate: Fri Mar 8 21:30:57 2024 +0100 Commit: Corinna Vinschen <corinna@vinschen.de> CommitDate: Fri Mar 8 21:30:57 2024 +0100 Cygwin: get/set security descriptors using FILE_OPEN_NO_RECALL Add FILE_OPEN_NO_RECALL to NtOpenFile calls trying to fetch or write file security descriptors so as not to recall them from offline storage inadvertently. Signed-off-by: Corinna Vinschen <corinna@vinschen.de> Diff: --- winsup/cygwin/sec/base.cc | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/winsup/cygwin/sec/base.cc b/winsup/cygwin/sec/base.cc index 8b04b40b4943..0fc8699bfc9e 100644 --- a/winsup/cygwin/sec/base.cc +++ b/winsup/cygwin/sec/base.cc @@ -65,7 +65,8 @@ get_file_sd (HANDLE fh, path_conv &pc, security_descriptor &sd, fh ? pc.init_reopen_attr (attr, fh) : pc.get_object_attr (attr, sec_none_nih), &io, FILE_SHARE_VALID_FLAGS, - FILE_OPEN_FOR_BACKUP_INTENT + FILE_OPEN_NO_RECALL + | FILE_OPEN_FOR_BACKUP_INTENT | pc.is_known_reparse_point () ? FILE_OPEN_REPARSE_POINT : 0); if (!NT_SUCCESS (status)) @@ -129,7 +130,8 @@ get_file_sd (HANDLE fh, path_conv &pc, security_descriptor &sd, NULL, NULL); status = NtOpenFile (&fh, READ_CONTROL, &attr, &io, FILE_SHARE_VALID_FLAGS, - FILE_OPEN_FOR_BACKUP_INTENT + FILE_OPEN_NO_RECALL + | FILE_OPEN_FOR_BACKUP_INTENT | FILE_OPEN_REPARSE_POINT); if (!NT_SUCCESS (status)) { @@ -234,7 +236,8 @@ set_file_sd (HANDLE fh, path_conv &pc, security_descriptor &sd, bool is_chown) : pc.get_object_attr (attr, sec_none_nih), &io, FILE_SHARE_VALID_FLAGS, - FILE_OPEN_FOR_BACKUP_INTENT + FILE_OPEN_NO_RECALL + | FILE_OPEN_FOR_BACKUP_INTENT | pc.is_known_reparse_point () ? FILE_OPEN_REPARSE_POINT : 0); if (!NT_SUCCESS (status))
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