source: web/old/remctl-2.14/portable/strlcpy.c @ f6f3e91

web
Last change on this file since f6f3e91 was f6f3e91, checked in by Jessica B. Hamrick <jhamrick@…>, 15 years ago

Preserve directory hierarchy (not sure what happened to it)

  • Property mode set to 100644
File size: 1.1 KB
Line 
1/*
2 * Replacement for a missing strlcpy.
3 *
4 * Provides the same functionality as the *BSD function strlcpy, originally
5 * developed by Todd Miller and Theo de Raadt.  strlcpy works similarly to
6 * strncpy, except saner and simpler.  The result is always nul-terminated
7 * even if the source string is longer than the destination string, and the
8 * total space required is returned.  The destination string is not nul-filled
9 * like strncpy does, just nul-terminated.
10 *
11 * Written by Russ Allbery <rra@stanford.edu>
12 * This work is hereby placed in the public domain by its author.
13 */
14
15#include <config.h>
16#include <portable/system.h>
17
18/*
19 * If we're running the test suite, rename strlcpy to avoid conflicts with
20 * the system version.
21 */
22#if TESTING
23# define strlcpy test_strlcpy
24size_t test_strlcpy(char *, const char *, size_t);
25#endif
26
27size_t
28strlcpy(char *dst, const char *src, size_t size)
29{
30    size_t length, copy;
31
32    length = strlen(src);
33    if (size > 0) {
34        copy = (length >= size) ? size - 1 : length;
35        memcpy(dst, src, copy);
36        dst[copy] = '\0';
37    }
38    return length;
39}
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