As switch_root basically does rm -Rf / we should make sure
that / is really an initramfs.
Signed-off-by: Richard Weinberger <richard@xxxxxx>
---
sys-utils/switch_root.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/sys-utils/switch_root.c b/sys-utils/switch_root.c
index f0ef677..f26f7da 100644
--- a/sys-utils/switch_root.c
+++ b/sys-utils/switch_root.c
@@ -174,7 +174,13 @@ static int switchroot(const char *newroot)
if (cfd >= 0) {
pid = fork();
if (pid <= 0) {
- recursiveRemove(cfd);
+ if (fstat(cfd, &sb) == 0) {
+ if (sb.st_dev == makedev(0, 1))
+ recursiveRemove(cfd);
+ else
+ warn(_("old root filesystem is not an initramfs"));
+ }
+
if (pid == 0)
exit(EXIT_SUCCESS);
}
--
1.7.7.3
--
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