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Commit	Line	Data
	1	/*
	2	* Reimplementations of standard functions for platforms that don't have them.
	3	*
	4	* Copyright (C) 1998 Andrew Tridgell
	5	* Copyright (C) 2002 Martin Pool
	6	* Copyright (C) 2004, 2005, 2006 Wayne Davison
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License along
	19	* with this program; if not, write to the Free Software Foundation, Inc.,
	20	* 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
	21	*/
	22
	23	#include "rsync.h"
	24
	25	#ifndef HAVE_STRDUP
	26	char strdup(char s)
	27	{
	28	int len = strlen(s) + 1;
	29	char ret = (char )malloc(len);
	30	if (ret)
	31	memcpy(ret, s, len);
	32	return ret;
	33	}
	34	#endif
	35
	36	#ifndef HAVE_GETCWD
	37	char getcwd(char buf, int size)
	38	{
	39	return getwd(buf);
	40	}
	41	#endif
	42
	43
	44	#ifndef HAVE_WAITPID
	45	pid_t waitpid(pid_t pid, int *statptr, int options)
	46	{
	47	#ifdef HAVE_WAIT4
	48	return wait4(pid, statptr, options, NULL);
	49	#else
	50	/* If wait4 is also not available, try wait3 for SVR3 variants */
	51	/* Less ideal because can't actually request a specific pid */
	52	/* At least the WNOHANG option is supported */
	53	/* Code borrowed from apache fragment written by dwd@bell-labs.com */
	54	int tmp_pid, dummystat;;
	55	if (kill(pid, 0) == -1) {
	56	errno = ECHILD;
	57	return -1;
	58	}
	59	if (statptr == NULL)
	60	statptr = &dummystat;
	61	while (((tmp_pid = wait3(statptr, options, 0)) != pid) &&
	62	(tmp_pid != -1) && (tmp_pid != 0) && (pid != -1))
	63	;
	64	return tmp_pid;
	65	#endif
	66	}
	67	#endif
	68
	69
	70	#ifndef HAVE_MEMMOVE
	71	void memmove(void dest, const void *src, size_t n)
	72	{
	73	bcopy((char ) src, (char ) dest, n);
	74	return dest;
	75	}
	76	#endif
	77
	78	#ifndef HAVE_STRPBRK
	79	/**
	80	* Find the first ocurrence in @p s of any character in @p accept.
	81	*
	82	* Derived from glibc
	83	**/
	84	char strpbrk(const char s, const char *accept)
	85	{
	86	while (*s != '\0') {
	87	const char *a = accept;
	88	while (*a != '\0') {
	89	if (a++ == s) return (char *)s;
	90	}
	91	++s;
	92	}
	93
	94	return NULL;
	95	}
	96	#endif
	97
	98
	99	#ifndef HAVE_STRLCPY
	100	/**
	101	* Like strncpy but does not 0 fill the buffer and always null
	102	* terminates.
	103	*
	104	* @param bufsize is the size of the destination buffer.
	105	*
	106	* @return index of the terminating byte.
	107	**/
	108	size_t strlcpy(char d, const char s, size_t bufsize)
	109	{
	110	size_t len = strlen(s);
	111	size_t ret = len;
	112	if (bufsize > 0) {
	113	if (len >= bufsize)
	114	len = bufsize-1;
	115	memcpy(d, s, len);
	116	d[len] = 0;
	117	}
	118	return ret;
	119	}
	120	#endif
	121
	122	#ifndef HAVE_STRLCAT
	123	/**
	124	* Like strncat() but does not 0 fill the buffer and always null
	125	* terminates.
	126	*
	127	* @param bufsize length of the buffer, which should be one more than
	128	* the maximum resulting string length.
	129	**/
	130	size_t strlcat(char d, const char s, size_t bufsize)
	131	{
	132	size_t len1 = strlen(d);
	133	size_t len2 = strlen(s);
	134	size_t ret = len1 + len2;
	135
	136	if (len1 < bufsize - 1) {
	137	if (len2 >= bufsize - len1)
	138	len2 = bufsize - len1 - 1;
	139	memcpy(d+len1, s, len2);
	140	d[len1+len2] = 0;
	141	}
	142	return ret;
	143	}
	144	#endif
	145
	146	/* some systems don't take the 2nd argument */
	147	int sys_gettimeofday(struct timeval *tv)
	148	{
	149	#ifdef HAVE_GETTIMEOFDAY_TZ
	150	return gettimeofday(tv, NULL);
	151	#else
	152	return gettimeofday(tv);
	153	#endif
	154	}