[glib: 4/5] glocalfileinfo: Support STX_BTIME for G_FILE_ATTRIBUTE_TIME_CREATED

[Philip Withnall <pwithnall src gnome org>]

commit 18aaf33cf150d1221005475ee7505854f10df021
Author: Andre Miranda <andre42m gmail com>
Date:   Fri Aug 14 16:12:05 2020 +0100

    glocalfileinfo: Support STX_BTIME for G_FILE_ATTRIBUTE_TIME_CREATED
    
    If `statx()` is supported, query it for the file creation time and use
    that if returned.
    
    Incorporating some minor code rearrangement by Philip Withnall
    <withnall endlessm com>.
    
    Fixes: #1970

 gio/gfileinfo.h      |  3 ++-
 gio/glocalfileinfo.c | 20 +++++++++++++-------
 2 files changed, 15 insertions(+), 8 deletions(-)
---
diff --git a/gio/gfileinfo.h b/gio/gfileinfo.h
index 073a7496b..da202e6a7 100644
--- a/gio/gfileinfo.h
+++ b/gio/gfileinfo.h
@@ -540,7 +540,8 @@ typedef struct _GFileInfoClass   GFileInfoClass;
  * and contains the time since the file was created, in seconds since the UNIX
  * epoch.
  *
- * This corresponds to the NTFS ctime.
+ * This may correspond to Linux stx_btime, FreeBSD st_birthtim, NetBSD
+ * st_birthtime or NTFS ctime.
  **/
 #define G_FILE_ATTRIBUTE_TIME_CREATED "time::created"             /* uint64 */
 
diff --git a/gio/glocalfileinfo.c b/gio/glocalfileinfo.c
index 0115a385a..a34c1b78a 100644
--- a/gio/glocalfileinfo.c
+++ b/gio/glocalfileinfo.c
@@ -1048,7 +1048,13 @@ set_info_from_stat (GFileInfo             *info,
 #endif
 #endif
 
-#if defined (HAVE_STRUCT_STAT_ST_BIRTHTIME) && defined (HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC)
+#if defined (HAVE_STATX)
+  if (_g_stat_has_field (statbuf, G_LOCAL_FILE_STAT_FIELD_BTIME))
+    {
+      _g_file_info_set_attribute_uint64_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_CREATED, 
statbuf->stx_btime.tv_sec);
+      _g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_CREATED_USEC, 
statbuf->stx_btime.tv_nsec / 1000);
+    }
+#elif defined (HAVE_STRUCT_STAT_ST_BIRTHTIME) && defined (HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC)
   _g_file_info_set_attribute_uint64_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_CREATED, statbuf->st_birthtime);
   _g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_CREATED_USEC, 
statbuf->st_birthtimensec / 1000);
 #elif defined (HAVE_STRUCT_STAT_ST_BIRTHTIM) && defined (HAVE_STRUCT_STAT_ST_BIRTHTIM_TV_NSEC)
@@ -1798,8 +1804,8 @@ _g_local_file_info_get (const char             *basename,
     }
 
   res = g_local_file_lstat (path,
-                            G_LOCAL_FILE_STAT_FIELD_BASIC_STATS,
-                            G_LOCAL_FILE_STAT_FIELD_ALL,
+                            G_LOCAL_FILE_STAT_FIELD_BASIC_STATS | G_LOCAL_FILE_STAT_FIELD_BTIME,
+                            G_LOCAL_FILE_STAT_FIELD_ALL & (~G_LOCAL_FILE_STAT_FIELD_BTIME),
                             &statbuf);
 
   if (res == -1)
@@ -1848,8 +1854,8 @@ _g_local_file_info_get (const char             *basename,
       if (!(flags & G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS))
        {
           res = g_local_file_stat (path,
-                                   G_LOCAL_FILE_STAT_FIELD_BASIC_STATS,
-                                   G_LOCAL_FILE_STAT_FIELD_ALL,
+                                   G_LOCAL_FILE_STAT_FIELD_BASIC_STATS | G_LOCAL_FILE_STAT_FIELD_BTIME,
+                                   G_LOCAL_FILE_STAT_FIELD_ALL & (~G_LOCAL_FILE_STAT_FIELD_BTIME),
                                    &statbuf2);
 
          /* Report broken links as symlinks */
@@ -2071,8 +2077,8 @@ _g_local_file_info_get_from_fd (int         fd,
   GFileInfo *info;
 
   if (g_local_file_fstat (fd,
-                          G_LOCAL_FILE_STAT_FIELD_BASIC_STATS,
-                          G_LOCAL_FILE_STAT_FIELD_ALL,
+                          G_LOCAL_FILE_STAT_FIELD_BASIC_STATS | G_LOCAL_FILE_STAT_FIELD_BTIME,
+                          G_LOCAL_FILE_STAT_FIELD_ALL & (~G_LOCAL_FILE_STAT_FIELD_BTIME),
                           &stat_buf) == -1)
     {
       int errsv = errno;