libmount: add mnt_fs_get_root()

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

5 files changed, 24 insertions, 6 deletions

diff --git a/shlibs/mount/src/fs.c b/shlibs/mount/src/fs.c
index 63da2f206..c8677c702 100644
--- a/shlibs/mount/src/fs.c
+++ b/shlibs/mount/src/fs.c
@@ -51,7 +51,7 @@ void mnt_free_fs(mnt_fs *fs)
 	free(fs->source);
 	free(fs->tagname);
 	free(fs->tagval);
-	free(fs->mntroot);
+	free(fs->root);
 	free(fs->target);
 	free(fs->fstype);
 	free(fs->optstr);
@@ -448,6 +448,18 @@ int mnt_fs_set_passno(mnt_fs *fs, int passno)
 }
 
 /**
+ * mnt_fs_get_root:
+ * @fs: /proc/self/mountinfo entry
+ *
+ * Returns: root of the mount within the filesystem or NULL
+ */
+const char *mnt_fs_get_root(mnt_fs *fs)
+{
+	assert(fs);
+	return fs ? fs->root : NULL;
+}
+
+/**
  * mnt_fs_get_id:
  * @fs: /proc/self/mountinfo entry
  *
@@ -475,7 +487,7 @@ int mnt_fs_get_parent_id(mnt_fs *fs)
 
 /**
  * mnt_fs_get_devno:
- * @fs: /proc/self/mountinfo
+ * @fs: /proc/self/mountinfo entry
  *
  * Returns: value of st_dev for files on filesystem or 0 in case of error.
  */
diff --git a/shlibs/mount/src/mount.h.in b/shlibs/mount/src/mount.h.in
index 6e76ddb28..d42ab1d62 100644
--- a/shlibs/mount/src/mount.h.in
+++ b/shlibs/mount/src/mount.h.in
@@ -31,7 +31,6 @@ extern "C" {
 
 #include <stdio.h>
 
-
 #define LIBMOUNT_VERSION   "@LIBMOUNT_VERSION@"
 
 /**
@@ -236,6 +235,7 @@ extern int mnt_fs_get_freq(mnt_fs *ent);
 extern int mnt_fs_set_freq(mnt_fs *ent, int freq);
 extern int mnt_fs_get_passno(mnt_fs *ent);
 extern int mnt_fs_set_passno(mnt_fs *ent, int passno);
+extern const char *mnt_fs_get_root(mnt_fs *fs);
 extern int mnt_fs_get_id(mnt_fs *fs);
 extern int mnt_fs_get_parent_id(mnt_fs *fs);
 extern dev_t mnt_fs_get_devno(mnt_fs *fs);
diff --git a/shlibs/mount/src/mount.sym b/shlibs/mount/src/mount.sym
index f3c10689a..c4aa8e4f9 100644
--- a/shlibs/mount/src/mount.sym
+++ b/shlibs/mount/src/mount.sym
@@ -133,3 +133,9 @@ global:
 local:
 	*;
 };
+
+
+MOUNT_2.19 {
+global:
+	mnt_fs_get_root;
+} MOUNT_2.18;
diff --git a/shlibs/mount/src/mountP.h b/shlibs/mount/src/mountP.h
index d217e3da3..04084e5d1 100644
--- a/shlibs/mount/src/mountP.h
+++ b/shlibs/mount/src/mountP.h
@@ -133,7 +133,7 @@ struct _mnt_fs {
 	char		*tagname;	/* fstab[1]: tag name - "LABEL", "UUID", ..*/
 	char		*tagval;	/*           tag value */
 
-	char		*mntroot;	/* mountinfo[4]: root of the mount within the FS */
+	char		*root;		/* mountinfo[4]: root of the mount within the FS */
 	char		*target;	/* mountinfo[5], fstab[2]: mountpoint */
 	char		*fstype;	/* mountinfo[9], fstab[3]: filesystem type */
 
diff --git a/shlibs/mount/src/tab_parse.c b/shlibs/mount/src/tab_parse.c
index e7cc7ef49..06bb64862 100644
--- a/shlibs/mount/src/tab_parse.c
+++ b/shlibs/mount/src/tab_parse.c
@@ -168,8 +168,8 @@ static int mnt_parse_mountinfo_line(mnt_fs *fs, char *s)
 	next_word_skip(&s);
 
 	/* MOUNTROOT */
-	fs->mntroot = next_word(&s);
-	if (!fs->mntroot)
+	fs->root = next_word(&s);
+	if (!fs->root)
 		return 1;
 
 	/* TARGET (mountpoit) */