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/*
* Reimplementations of standard functions for platforms that don't have them.
*
* Copyright (C) 1998 Andrew Tridgell
* Copyright (C) 2002 Martin Pool
* Copyright (C) 2004, 2005, 2006 Wayne Davison
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, visit the http://fsf.org website.
*/
#include "rsync.h"
#ifndef HAVE_STRDUP
char *strdup(char *s)
{
int len = strlen(s) + 1;
char *ret = (char *)malloc(len);
if (ret)
memcpy(ret, s, len);
return ret;
}
#endif
#ifndef HAVE_GETCWD
char *getcwd(char *buf, int size)
{
return getwd(buf);
}
#endif
#ifndef HAVE_WAITPID
pid_t waitpid(pid_t pid, int *statptr, int options)
{
#ifdef HAVE_WAIT4
return wait4(pid, statptr, options, NULL);
#else
/* If wait4 is also not available, try wait3 for SVR3 variants */
/* Less ideal because can't actually request a specific pid */
/* At least the WNOHANG option is supported */
/* Code borrowed from apache fragment written by dwd@bell-labs.com */
int tmp_pid, dummystat;;
if (kill(pid, 0) == -1) {
errno = ECHILD;
return -1;
}
if (statptr == NULL)
statptr = &dummystat;
while (((tmp_pid = wait3(statptr, options, 0)) != pid) &&
(tmp_pid != -1) && (tmp_pid != 0) && (pid != -1))
;
return tmp_pid;
#endif
}
#endif
#ifndef HAVE_MEMMOVE
void *memmove(void *dest, const void *src, size_t n)
{
bcopy((char *) src, (char *) dest, n);
return dest;
}
#endif
#ifndef HAVE_STRPBRK
/**
* Find the first ocurrence in @p s of any character in @p accept.
*
* Derived from glibc
**/
char *strpbrk(const char *s, const char *accept)
{
while (*s != '\0') {
const char *a = accept;
while (*a != '\0') {
if (*a++ == *s) return (char *)s;
}
++s;
}
return NULL;
}
#endif
#ifndef HAVE_STRLCPY
/**
* Like strncpy but does not 0 fill the buffer and always null
* terminates.
*
* @param bufsize is the size of the destination buffer.
*
* @return index of the terminating byte.
**/
size_t strlcpy(char *d, const char *s, size_t bufsize)
{
size_t len = strlen(s);
size_t ret = len;
if (bufsize > 0) {
if (len >= bufsize)
len = bufsize-1;
memcpy(d, s, len);
d[len] = 0;
}
return ret;
}
#endif
#ifndef HAVE_STRLCAT
/**
* Like strncat() but does not 0 fill the buffer and always null
* terminates.
*
* @param bufsize length of the buffer, which should be one more than
* the maximum resulting string length.
**/
size_t strlcat(char *d, const char *s, size_t bufsize)
{
size_t len1 = strlen(d);
size_t len2 = strlen(s);
size_t ret = len1 + len2;
if (len1 < bufsize - 1) {
if (len2 >= bufsize - len1)
len2 = bufsize - len1 - 1;
memcpy(d+len1, s, len2);
d[len1+len2] = 0;
}
return ret;
}
#endif
/* some systems don't take the 2nd argument */
int sys_gettimeofday(struct timeval *tv)
{
#ifdef HAVE_GETTIMEOFDAY_TZ
return gettimeofday(tv, NULL);
#else
return gettimeofday(tv);
#endif
}
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