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Commit	Line	Data
	1	/*
	2	Copyright (C) Andrew Tridgell 1998
	3	Copyright (C) 2002 by Martin Pool
	4
	5	This program is free software; you can redistribute it and/or modify
	6	it under the terms of the GNU General Public License as published by
	7	the Free Software Foundation; either version 2 of the License, or
	8	(at your option) any later version.
	9
	10	This program is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	GNU General Public License for more details.
	14
	15	You should have received a copy of the GNU General Public License
	16	along with this program; if not, write to the Free Software
	17	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	18	*/
	19
	20	/**
	21	* @file compat.c
	22	*
	23	* Reimplementations of standard functions for platforms that don't
	24	* have them.
	25	**/
	26
	27
	28
	29	#include "rsync.h"
	30
	31
	32	#ifndef HAVE_STRDUP
	33	char strdup(char s)
	34	{
	35	int l = strlen(s) + 1;
	36	char ret = (char )malloc(l);
	37	if (ret)
	38	strcpy(ret,s);
	39	return ret;
	40	}
	41	#endif
	42
	43	#ifndef HAVE_GETCWD
	44	char getcwd(char buf, int size)
	45	{
	46	return getwd(buf);
	47	}
	48	#endif
	49
	50
	51	#ifndef HAVE_WAITPID
	52	pid_t waitpid(pid_t pid, int *statptr, int options)
	53	{
	54	#ifdef HAVE_WAIT4
	55	return wait4(pid, statptr, options, NULL);
	56	#else
	57	/* If wait4 is also not available, try wait3 for SVR3 variants */
	58	/* Less ideal because can't actually request a specific pid */
	59	/* At least the WNOHANG option is supported */
	60	/* Code borrowed from apache fragment written by dwd@bell-labs.com */
	61	int tmp_pid, dummystat;;
	62	if (kill(pid, 0) == -1) {
	63	errno = ECHILD;
	64	return -1;
	65	}
	66	if (statptr == NULL)
	67	statptr = &dummystat;
	68	while (((tmp_pid = wait3(statptr, options, 0)) != pid) &&
	69	(tmp_pid != -1) && (tmp_pid != 0) && (pid != -1))
	70	;
	71	return tmp_pid;
	72	#endif
	73	}
	74	#endif
	75
	76
	77	#ifndef HAVE_MEMMOVE
	78	void memmove(void dest, const void *src, size_t n)
	79	{
	80	bcopy((char ) src, (char ) dest, n);
	81	return dest;
	82	}
	83	#endif
	84
	85	#ifndef HAVE_STRPBRK
	86	/**
	87	* Find the first ocurrence in @p s of any character in @p accept.
	88	*
	89	* Derived from glibc
	90	**/
	91	char strpbrk(const char s, const char *accept)
	92	{
	93	while (*s != '\0') {
	94	const char *a = accept;
	95	while (*a != '\0') {
	96	if (a++ == s) return (char *)s;
	97	}
	98	++s;
	99	}
	100
	101	return NULL;
	102	}
	103	#endif
	104
	105
	106	#ifndef HAVE_STRLCPY
	107	/**
	108	* Like strncpy but does not 0 fill the buffer and always null
	109	* terminates.
	110	*
	111	* @param bufsize is the size of the destination buffer.
	112	*
	113	* @return index of the terminating byte.
	114	**/
	115	size_t strlcpy(char d, const char s, size_t bufsize)
	116	{
	117	size_t len = strlen(s);
	118	size_t ret = len;
	119	if (bufsize > 0) {
	120	if (len >= bufsize)
	121	len = bufsize-1;
	122	memcpy(d, s, len);
	123	d[len] = 0;
	124	}
	125	return ret;
	126	}
	127	#endif
	128
	129	#ifndef HAVE_STRLCAT
	130	/**
	131	* Like strncat() but does not 0 fill the buffer and always null
	132	* terminates.
	133	*
	134	* @param bufsize length of the buffer, which should be one more than
	135	* the maximum resulting string length.
	136	**/
	137	size_t strlcat(char d, const char s, size_t bufsize)
	138	{
	139	size_t len1 = strlen(d);
	140	size_t len2 = strlen(s);
	141	size_t ret = len1 + len2;
	142
	143	if (len1 < bufsize - 1) {
	144	if (len2 >= bufsize - len1)
	145	len2 = bufsize - len1 - 1;
	146	memcpy(d+len1, s, len2);
	147	d[len1+len2] = 0;
	148	}
	149	return ret;
	150	}
	151	#endif
	152
	153	/* some systems don't take the 2nd argument */
	154	int sys_gettimeofday(struct timeval *tv)
	155	{
	156	#ifdef HAVE_GETTIMEOFDAY_TZ
	157	return gettimeofday(tv, NULL);
	158	#else
	159	return gettimeofday(tv);
	160	#endif
	161	}