On 27/03/17 13:17, Rafał Miłecki wrote:
From: Rafał Miłecki <ra...@milecki.pl>
Signed-off-by: Rafał Miłecki <ra...@milecki.pl>
Acked-by: John Crispin <j...@phrozen.org>
---
libfstools/mount.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/libfstools/mount.c b/libfstools/mount.c
index 81176ce..5358536 100644
--- a/libfstools/mount.c
+++ b/libfstools/mount.c
@@ -25,6 +25,12 @@
/* this is a raw syscall - man 2 pivot_root */
extern int pivot_root(const char *new_root, const char *put_old);
+/**
+ * mount_move - move mounted point to the new location
+ *
+ * @oldroot: directory that is current location of mount point
+ * @newroot: new directory for the mount point
+ */
int
mount_move(char *oldroot, char *newroot, char *dir)
{
@@ -79,6 +85,12 @@ pivot(char *new, char *old)
return 0;
}
+/**
+ * fopivot - switch to overlay using passed dir as upper one
+ *
+ * @rw_root: writable directory that will be used as upper dir
+ * @ro_root: directory where old root will be put
+ */
int
fopivot(char *rw_root, char *ro_root)
{
@@ -134,6 +146,9 @@ fopivot(char *rw_root, char *ro_root)
return pivot("/mnt", ro_root);
}
+/**
+ * ramoverlay - use RAM to store filesystem changes on top of RO root
+ */
int
ramoverlay(void)
{
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