strdupa man page on CentOS

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STRDUP(3)		   Linux Programmer's Manual		     STRDUP(3)

NAME
       strdup, strndup, strdupa, strndupa - duplicate a string

SYNOPSIS
       #include <string.h>

       char *strdup(const char *s);

       #define _GNU_SOURCE
       #include <string.h>

       char *strndup(const char *s, size_t n);
       char *strdupa(const char *s);
       char *strndupa(const char *s, size_t n);

DESCRIPTION
       The  strdup()  function	returns	 a  pointer to a new string which is a
       duplicate of the string s.  Memory for the new string is obtained  with
       malloc(3), and can be freed with free(3).

       The  strndup()  function	 is similar, but only copies at most n charac‐
       ters. If s is longer than n, only n characters are copied, and a termi‐
       nating null byte ('\0') is added.

       strdupa() and strndupa() are similar, but use alloca(3) to allocate the
       buffer. They are only available when using the GNU GCC suite, and  suf‐
       fer from the same limitations described in alloca(3).

RETURN VALUE
       The  strdup()  function	returns a pointer to the duplicated string, or
       NULL if insufficient memory was available.

ERRORS
       ENOMEM Insufficient memory available to allocate duplicate string.

CONFORMING TO
       strdup() conforms to SVr4, 4.3BSD, POSIX.1-2001.	 strndup(), strdupa(),
       and strndupa() are GNU extensions.

SEE ALSO
       alloca(3), calloc(3), free(3), malloc(3), realloc(3), wcsdup(3)

GNU				  1993-04-12			     STRDUP(3)
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