[libglnx: 1/2] Fix docs for glnx_file_replace_contents()

[Colin Walters <walters src gnome org>]

commit c2dbe1811bc5a0176d7df8280625220681a60011
Author: Owen W. Taylor <otaylor fishsoup net>
Date:   Fri Nov 30 16:22:51 2018 -0500

    Fix docs for glnx_file_replace_contents()
    
    The docs for `glnx_file_replace_contents[_with_perms]` say that the default mode
    is 0666 - umask, but it's actually 0644. Because there's no thread-safe way of
    finding out the current umask without grubbing around in /proc/self/status,
    simply make the docs reflect reality.

 glnx-fdio.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/glnx-fdio.c b/glnx-fdio.c
index a1f1903..7b734ff 100644
--- a/glnx-fdio.c
+++ b/glnx-fdio.c
@@ -1002,8 +1002,7 @@ glnx_file_copy_at (int                   src_dfd,
  * contents.  This and other behavior can be controlled via @flags.
  *
  * Note that no metadata from the existing file is preserved, such as
- * uid/gid or extended attributes.  The default mode will be `0666`,
- * modified by umask.
+ * uid/gid or extended attributes.  The default mode will be `0644`.
  */ 
 gboolean
 glnx_file_replace_contents_at (int                   dfd,
@@ -1025,7 +1024,7 @@ glnx_file_replace_contents_at (int                   dfd,
  * @subpath: Subpath
  * @buf: (array len=len) (element-type guint8): File contents
  * @len: Length (if `-1`, assume @buf is `NUL` terminated)
- * @mode: File mode; if `-1`, use `0666 - umask`
+ * @mode: File mode; if `-1`, use `0644`
  * @flags: Flags
  * @cancellable: Cancellable
  * @error: Error