---
name: "range_bufinbuf"
section: "3diet"
platform: "linux"
package: "libowfat-dev"
version: "0.28-2"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/range_bufinbuf/3diet"
---

# range\_bufinbuf(3diet)

range check for buf in buffer

## NAME

range\_bufinbuf - range check for buf in buffer

## SYNTAX

**#include \<rangecheck.h\>**

int **range\_bufinbuf**(const void\* buf1,size\_t len1,\
                    const void\* buf2,size\_t len2);

## DESCRIPTION

range\_bufinbuf checks that the buffer *buf2*\[0..*len2*-1\] lies entirely in *buf1*\[0..*len1*\].

If the buffer is 0-terminated and you don't know the length beforehand, use range\_strinbuf, range\_str2inbuf or range\_str4inbuf instead.

## RETURN VALUE

If one of the buffers is implausible (buf is NULL or buf+len has an integer overflow), return 0.

If the buf2\[0..len2-1\] lies before or after buf1\[0..len1-1\], return 0.

Otherwise, return 1.

## SEE ALSO

[rangecheck(3)](/rangecheck/3.md)