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| author | Richard Weinberger | 2013-02-09 19:22:50 +0100 |
|---|---|---|
| committer | Karel Zak | 2013-02-13 14:55:30 +0100 |
| commit | 07de470e437f204e3d40b8b0a85f57c1978ff9ed (patch) | |
| tree | 6cd85fe6dd4c3148843bf5af03e2503c0493cdc1 /sys-utils/switch_root.c | |
| parent | build-sys: add config-gen.d stuff for chsh-chfn (diff) | |
| download | kernel-qcow2-util-linux-07de470e437f204e3d40b8b0a85f57c1978ff9ed.tar.gz kernel-qcow2-util-linux-07de470e437f204e3d40b8b0a85f57c1978ff9ed.tar.xz kernel-qcow2-util-linux-07de470e437f204e3d40b8b0a85f57c1978ff9ed.zip | |
switch_root: Add a sanity check
As switch_root basically does rm -Rf / we should make sure
that / is really an initramfs.
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'sys-utils/switch_root.c')
| -rw-r--r-- | 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 f0ef67745..f26f7dae4 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); } |