findmnt: add /etc/fstab.d support

Signed-off-by: Karel Zak <kzak@redhat.com>

2 files changed, 23 insertions, 3 deletions

diff --git a/misc-utils/findmnt.8 b/misc-utils/findmnt.8
index c7a15357b..65cef44bb 100644
--- a/misc-utils/findmnt.8
+++ b/misc-utils/findmnt.8
@@ -22,6 +22,7 @@ will list all mounted filesytems or search for a filesystem.  The
 .B findmnt
 command is able to search in
 .IR /etc/fstab ,
+.IR /etc/fstab.d ,
 .IR /etc/mtab
 or
 .IR /proc/self/mountinfo .
@@ -37,7 +38,9 @@ The command prints all mounted filesystems in the tree-like format by default.
 Print help and exit.
 .IP "\fB\-s, \-\-fstab\fP"
 Search in
-.IR /etc/fstab .
+.IR /etc/fstab
+and
+.IR /etc/fstab.d .
 The output is in the list format (see --list).
 .IP "\fB\-m, \-\-mtab\fP"
 Search in
diff --git a/misc-utils/findmnt.c b/misc-utils/findmnt.c
index 1754da1d5..76564f6b8 100644
--- a/misc-utils/findmnt.c
+++ b/misc-utils/findmnt.c
@@ -308,15 +308,32 @@ leave:
 	return rc;
 }
 
+/* error callback */
+static int parser_errcb(mnt_tab *tb, const char *filename, int line, int flag)
+{
+	warn(_("%s: parse error at line %d"), filename, line);
+	return 0;
+}
+
 /* calls libmount fstab/mtab/mountinfo parser */
 static mnt_tab *parse_tabfile(const char *path)
 {
-	mnt_tab *tb = mnt_new_tab(path);
+	int rc;
+	mnt_tab *tb = mnt_new_tab();
+
 	if (!tb) {
 		warn(_("failed to initialize libmount tab"));
 		return NULL;
 	}
-	if (mnt_tab_parse_file(tb) != 0) {
+
+	mnt_tab_set_parser_errcb(tb, parser_errcb);
+
+	if (!strcmp(path, _PATH_MNTTAB))
+		rc = mnt_tab_parse_fstab(tb);
+	else
+		rc = mnt_tab_parse_file(tb, path);
+
+	if (rc) {
 		mnt_free_tab(tb);
 		warn(_("can't read: %s"), path);
 		return NULL;