79 lines
2.4 KiB
Diff
79 lines
2.4 KiB
Diff
|
From 199ae08b4df09ec4ce9d82584664e61bcb7ab91a Mon Sep 17 00:00:00 2001
|
||
|
|
From: Martin Wilck <mwilck@suse.com>
|
||
|
|
Date: Fri, 1 Feb 2019 11:36:42 +0100
|
||
|
|
Subject: [PATCH 1/2] libmount: print a blacklist hint for "unknown filesystem
|
||
|
|
type"
|
||
|
|
|
||
|
|
SUSE blacklists kernel modules for some old, poorly maintained
|
||
|
|
file systems by default for security reasons. Provide a hopefully
|
||
|
|
helpful message to users if mounting a possibly blacklisted file
|
||
|
|
system fails.
|
||
|
|
|
||
|
|
Signed-off-by: Martin Wilck <mwilck@suse.com>
|
||
|
|
---
|
||
|
|
libmount/src/context_mount.c | 41 ++++++++++++++++++++++++++++++++----
|
||
|
|
1 file changed, 37 insertions(+), 4 deletions(-)
|
||
|
|
|
||
|
|
diff --git a/libmount/src/context_mount.c b/libmount/src/context_mount.c
|
||
|
|
index f914c9b..a48483f 100644
|
||
|
|
--- a/libmount/src/context_mount.c
|
||
|
|
+++ b/libmount/src/context_mount.c
|
||
|
|
@@ -1423,6 +1423,32 @@ done:
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
+/*
|
||
|
|
+ * SUSE blacklists kernel modules for some old, poorly maintained
|
||
|
|
+ * file systems by default for security reasons.
|
||
|
|
+ * A set of blacklist files is maintained under /etc/modprobe.d,
|
||
|
|
+ * in the suse-module-tools package.
|
||
|
|
+ * Blacklisted file system modules will cause mount(2) to fail
|
||
|
|
+ * with -ENODEV.
|
||
|
|
+ * If this happens for one of the blacklisted file systems, provide
|
||
|
|
+ * a hint to the user where to look.
|
||
|
|
+ */
|
||
|
|
+static int is_maybe_blacklisted(const char *fstype)
|
||
|
|
+{
|
||
|
|
+ static const char *const fs_blacklist[] = {
|
||
|
|
+ "adfs", "affs", "bfs", "befs", "cramfs", "efs", "erofs",
|
||
|
|
+ "exofs", "freevxfs", "f2fs", "hfs", "hpfs",
|
||
|
|
+ "jfs", "minix", "nilfs2", "ntfs", "omfs", "qnx4", "qnx6",
|
||
|
|
+ "sysv", "ufs"
|
||
|
|
+ };
|
||
|
|
+ size_t i;
|
||
|
|
+
|
||
|
|
+ for (i = 0; i < sizeof(fs_blacklist)/sizeof(*fs_blacklist); i++)
|
||
|
|
+ if (!strcmp(fs_blacklist[i], fstype))
|
||
|
|
+ return 1;
|
||
|
|
+ return 0;
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
int mnt_context_get_mount_excode(
|
||
|
|
struct libmnt_context *cxt,
|
||
|
|
int rc,
|
||
|
|
@@ -1670,10 +1696,17 @@ int mnt_context_get_mount_excode(
|
||
|
|
case ENODEV:
|
||
|
|
if (!buf)
|
||
|
|
break;
|
||
|
|
- if (mnt_context_get_fstype(cxt))
|
||
|
|
- snprintf(buf, bufsz, _("unknown filesystem type '%s'"),
|
||
|
|
- mnt_context_get_fstype(cxt));
|
||
|
|
- else
|
||
|
|
+ if (mnt_context_get_fstype(cxt)) {
|
||
|
|
+ size_t n;
|
||
|
|
+
|
||
|
|
+ n = snprintf(buf, bufsz,
|
||
|
|
+ _("unknown filesystem type '%s'"),
|
||
|
|
+ mnt_context_get_fstype(cxt));
|
||
|
|
+ if (n < bufsz &&
|
||
|
|
+ is_maybe_blacklisted(mnt_context_get_fstype(cxt)))
|
||
|
|
+ snprintf(buf + n, bufsz - n,
|
||
|
|
+ " (hint: possibly blacklisted, see mount(8))");
|
||
|
|
+ } else
|
||
|
|
snprintf(buf, bufsz, _("unknown filesystem type"));
|
||
|
|
break;
|
||
|
|
|
||
|
|
--
|
||
|
|
2.19.2
|
||
|
|
|