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msgb: msgb_pull: Abort when pulling more than avail size 

Change-Id: I512ff2035ae7a929e6c96df82938cc1ddbcc4e2a
This commit is contained in:
Pau Espin 2018-04-11 20:14:08 +02:00
parent 9fa0912e5b
commit c62fc2d20f
1 changed files with 3 additions and 0 deletions
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3
include/osmocom/core/msgb.h
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@ -331,6 +331,9 @@ static inline void msgb_push_u32(struct msgb *msg, uint32_t word)
*/
static inline unsigned char *msgb_pull(struct msgb *msgb, unsigned int len)
{
if (msgb_length(msgb) < len)
MSGB_ABORT(msgb, "msgb too small to pull %u (len %u)\n",
len, msgb_length(msgb));
msgb->len -= len;
return msgb->data += len;
}