Manpage of STRNLEN
STRNLENSection: Linux Programmer's Manual (3)
NAMEstrnlen - determine the length of a fixed-size string
#include <string.h>size_t strnlen(const char *s, size_t maxlen);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
- Since glibc 2.10:
- _POSIX_C_SOURCE >= 200809L
- Before glibc 2.10:
DESCRIPTIONThe strnlen() function returns the number of characters in the string pointed to by s, excluding the terminating null byte (aq\0aq), but at most maxlen. In doing this, strnlen() looks only at the first maxlencharacters in the string pointed to by sand never beyond s+maxlen.
RETURN VALUEThe strnlen() function returns strlen(s), if that is less than maxlen, or maxlenif there is no null terminating (aq\0aq) among the first maxlencharacters pointed to by s.
ATTRIBUTESFor an explanation of the terms used in this section, see attributes(7).
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