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Command: strdup | Section: 3 | Source: MINIX | File: strdup.3
STRDUP(3) FreeBSD Library Functions Manual STRDUP(3)
NAME
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.\n");
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.
FreeBSD 14.1-RELEASE-p8 January 28, 2009 FreeBSD 14.1-RELEASE-p8