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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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