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strndup(3) [netbsd man page]

STRDUP(3)						   BSD Library Functions Manual 						 STRDUP(3)

strdup, strndup -- save a copy of a string LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <string.h> char * strdup(const char *str); char * strndup(const char *str, size_t len); DESCRIPTION
The strdup() function allocates sufficient memory for a copy of the string str, does the copy, and returns a pointer to it. The pointer may subsequently be used as an argument to the function free(3). If insufficient memory is available, NULL is returned. The strndup() function copies at most len characters from the string str always NUL terminating the copied string. EXAMPLES
The following will point p to an allocated area of memory containing the nul-terminated string "foobar": char *p; if ((p = strdup("foobar")) == NULL) { fprintf(stderr, "Out of memory. "); exit(1); } ERRORS
The strdup() function may fail and set the external variable errno for any of the errors specified for the library function malloc(3). SEE ALSO
free(3), malloc(3), strcpy(3), strlen(3) STANDARDS
The strdup() function conforms to IEEE Std 1003.1-2001 (``POSIX.1''). HISTORY
The strdup() function first appeared in 4.4BSD. The strndup() function was added in NetBSD 4.0. BSD
January 28, 2009 BSD

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

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 characters. If s is longer than n, only n characters are copied, and a termi- nating NUL 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
SVID 3, BSD 4.3. strndup(), strdupa(), and strndupa() are GNU extensions. SEE ALSO
alloca(3), calloc(3), free(3), malloc(3), realloc(3) GNU
1993-04-12 STRDUP(3)
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