mke2fs: Issue a warning if the mke2fs.conf file wasn't updated

Many people are forgetting to update their mke2fs.conf file, and this
means that filesystems aren't getting created with the proper features
enabled.  So detect this case and issue a warning.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index 04c482e4caa629fafe3f193db60ebf2885edf193..9cba3b5da7b17ba1e762a3e65dcd40402a90e83d 100644 (file)
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c
@@ -968,6 +968,20 @@ static char **parse_fs_type(const char *fs_type,
                        ext_type = "ext3";
        }
 
+       if (!strcmp(ext_type, "ext3") || !strcmp(ext_type, "ext4") ||
+           !strcmp(ext_type, "ext4dev")) {
+               profile_get_string(profile, "fs_types", ext_type, "features",
+                                  0, &t);
+               if (!t) {
+                       printf(_("\nWarning!  Your mke2fs.conf file does "
+                                "not define the %s filesystem type.\n"),
+                              ext_type);
+                       printf(_("You probably need to install an updated "
+                                "mke2fs.conf file.\n\n"));
+                       sleep(5);
+               }
+       }
+
        meg = (1024 * 1024) / EXT2_BLOCK_SIZE(fs_param);
        if (fs_param->s_blocks_count < 3 * meg)
                size_type = "floppy";