diff options
| author | Aurelien Aptel <aaptel@suse.com> | 2021-03-18 21:17:10 +0300 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2021-03-19 08:50:58 +0300 |
| commit | af3ef3b1031634724a3763606695ebcd113d782b (patch) | |
| tree | 589e504c57af5b35526dac8c8e84d33a633eea82 | |
| parent | 403dba003d17b3f0c1627b355cec2d74041cf648 (diff) | |
| download | linux-af3ef3b1031634724a3763606695ebcd113d782b.tar.xz | |
cifs: warn and fail if trying to use rootfs without the config option
If CONFIG_CIFS_ROOT is not set, rootfs mount option is invalid
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
CC: <stable@vger.kernel.org> # v5.11
Signed-off-by: Steve French <stfrench@microsoft.com>
| -rw-r--r-- | fs/cifs/fs_context.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/cifs/fs_context.c b/fs/cifs/fs_context.c index 892f51a21278..78889024a7ed 100644 --- a/fs/cifs/fs_context.c +++ b/fs/cifs/fs_context.c @@ -1196,9 +1196,11 @@ static int smb3_fs_context_parse_param(struct fs_context *fc, pr_warn_once("Witness protocol support is experimental\n"); break; case Opt_rootfs: -#ifdef CONFIG_CIFS_ROOT - ctx->rootfs = true; +#ifndef CONFIG_CIFS_ROOT + cifs_dbg(VFS, "rootfs support requires CONFIG_CIFS_ROOT config option\n"); + goto cifs_parse_mount_err; #endif + ctx->rootfs = true; break; case Opt_posixpaths: if (result.negated) |