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authorGabor Juhos <juhosg@openwrt.org>2012-04-19 21:31:40 +0000
committerGabor Juhos <juhosg@openwrt.org>2012-04-19 21:31:40 +0000
commit5c9ca38e47cb254b6efe302a955939885340eb16 (patch)
treecf144f83865aa94dff173749d0d937680d000266 /target/linux/ar71xx/files
parent8f921175ba79c56d913f21b76be442dad8feb697 (diff)
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ar71xx: add sanity checks to decode_rle
Also use -EINVAL instead of -1. SVN-Revision: 31353
Diffstat (limited to 'target/linux/ar71xx/files')
-rw-r--r--target/linux/ar71xx/files/arch/mips/ath79/mach-rb750.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-rb750.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-rb750.c
index 3e4a552..30d8eac 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-rb750.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-rb750.c
@@ -299,24 +299,29 @@ static int decode_rle(char *output, int len, char *in)
{
char *ptr = output;
char *end = output + len;
+
+ if (!output || !in)
+ return -EINVAL;
+
while (*in) {
if (*in < 0) {
int i = -*in++;
while (i-- > 0) {
if (ptr >= end)
- return -1;
+ return -EINVAL;
*ptr++ = *in++;
}
} else if (*in > 0) {
int i = *in++;
while (i-- > 0) {
if (ptr >= end)
- return -1;
+ return -EINVAL;
*ptr++ = *in;
}
in++;
}
}
+
return ptr - output;
}