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[newlib-cygwin] Only request WRITE_DAC rights when writing an ACL


https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=e983bd6aa4cf25dffc3428f46f8943d7876f75ee

commit e983bd6aa4cf25dffc3428f46f8943d7876f75ee
Author: Corinna Vinschen <corinna@vinschen.de>
Date:   Fri Dec 25 21:40:51 2015 +0100

    Only request WRITE_DAC rights when writing an ACL
    
            * fhandler_disk_file.cc (fhandler_disk_file::fchmod): Only request
            query_write_dac rather than query_write_control access when writing
            an ACL.  Fix a comment.
    
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/cygwin/ChangeLog             | 6 ++++++
 winsup/cygwin/fhandler_disk_file.cc | 4 ++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 3bddc68..546df24 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,9 @@
+2015-12-25  Corinna Vinschen  <corinna@vinschen.de>
+
+	* fhandler_disk_file.cc (fhandler_disk_file::fchmod): Only request
+	query_write_dac rather than query_write_control access when writing
+	an ACL.  Fix a comment.
+
 2015-12-24  Corinna Vinschen  <corinna@vinschen.de>
 
 	* sec_acl.cc (__aclcalcmask): New function to recalculate ACL masks.
diff --git a/winsup/cygwin/fhandler_disk_file.cc b/winsup/cygwin/fhandler_disk_file.cc
index 1dd1b8c..4ee67e2 100644
--- a/winsup/cygwin/fhandler_disk_file.cc
+++ b/winsup/cygwin/fhandler_disk_file.cc
@@ -742,7 +742,7 @@ fhandler_disk_file::fchmod (mode_t mode)
       query_open (query_write_dac);
       if (!(oret = open (O_BINARY, 0)))
 	{
-	  /* Need WRITE_DAC|WRITE_OWNER to write ACLs. */
+	  /* Need WRITE_DAC to write ACLs. */
 	  if (pc.has_acls ())
 	    return -1;
 	  /* Otherwise FILE_WRITE_ATTRIBUTES is sufficient. */
@@ -1021,7 +1021,7 @@ cant_access_acl:
       if ((cmd == SETACL && !get_handle ())
 	  || (cmd != SETACL && !get_stat_handle ()))
 	{
-	  query_open (cmd == SETACL ? query_write_control : query_read_control);
+	  query_open (cmd == SETACL ? query_write_dac : query_read_control);
 	  if (!(oret = open (O_BINARY, 0)))
 	    {
 	      if (cmd == GETACL || cmd == GETACLCNT)


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