mirror of
https://src.fedoraproject.org/rpms/grub2.git
synced 2024-11-24 22:35:28 +00:00
51 lines
1.5 KiB
Diff
51 lines
1.5 KiB
Diff
From 76188809d5ca40c5285b0ab202b5edea7be3f04d Mon Sep 17 00:00:00 2001
|
|
From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali.rohar@gmail.com>
|
|
Date: Thu, 22 Jun 2017 14:33:17 +0200
|
|
Subject: [PATCH] udf: Fix reading label, lvd.ident is dstring
|
|
|
|
UDF dstring has stored length in the last byte of buffer. Therefore last
|
|
byte is not part of recorded characters. And empty string in dstring is
|
|
encoded as empty buffer, including first byte (compression id).
|
|
---
|
|
grub-core/fs/udf.c | 21 ++++++++++++++++++++-
|
|
1 file changed, 20 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/grub-core/fs/udf.c b/grub-core/fs/udf.c
|
|
index 839bff88963..2587456336e 100644
|
|
--- a/grub-core/fs/udf.c
|
|
+++ b/grub-core/fs/udf.c
|
|
@@ -860,6 +860,25 @@ read_string (const grub_uint8_t *raw, grub_size_t sz, char *outbuf)
|
|
return outbuf;
|
|
}
|
|
|
|
+static char *
|
|
+read_dstring (const grub_uint8_t *raw, grub_size_t sz)
|
|
+{
|
|
+ grub_size_t len;
|
|
+
|
|
+ if (raw[0] == 0) {
|
|
+ char *outbuf = grub_malloc (1);
|
|
+ if (!outbuf)
|
|
+ return NULL;
|
|
+ outbuf[0] = 0;
|
|
+ return outbuf;
|
|
+ }
|
|
+
|
|
+ len = raw[sz - 1];
|
|
+ if (len > sz - 1)
|
|
+ len = sz - 1;
|
|
+ return read_string (raw, len, NULL);
|
|
+}
|
|
+
|
|
static int
|
|
grub_udf_iterate_dir (grub_fshelp_node_t dir,
|
|
grub_fshelp_iterate_dir_hook_t hook, void *hook_data)
|
|
@@ -1197,7 +1216,7 @@ grub_udf_label (grub_device_t device, char **label)
|
|
|
|
if (data)
|
|
{
|
|
- *label = read_string (data->lvd.ident, sizeof (data->lvd.ident), 0);
|
|
+ *label = read_dstring (data->lvd.ident, sizeof (data->lvd.ident));
|
|
grub_free (data);
|
|
}
|
|
else
|