2 * Reimplementations of standard functions for platforms that don't have them.
4 * Copyright (C) 1998 Andrew Tridgell
5 * Copyright (C) 2002 Martin Pool
6 * Copyright (C) 2004, 2005, 2006 Wayne Davison
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 3 of the License, or
11 * (at your option) any later version.
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.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, visit the http://fsf.org website.
27 int len = strlen(s) + 1;
28 char *ret = (char *)malloc(len);
36 char *getcwd(char *buf, int size)
44 pid_t waitpid(pid_t pid, int *statptr, int options)
47 return wait4(pid, statptr, options, NULL);
49 /* If wait4 is also not available, try wait3 for SVR3 variants */
50 /* Less ideal because can't actually request a specific pid */
51 /* At least the WNOHANG option is supported */
52 /* Code borrowed from apache fragment written by dwd@bell-labs.com */
53 int tmp_pid, dummystat;;
54 if (kill(pid, 0) == -1) {
60 while (((tmp_pid = wait3(statptr, options, 0)) != pid) &&
61 (tmp_pid != -1) && (tmp_pid != 0) && (pid != -1))
70 void *memmove(void *dest, const void *src, size_t n)
72 bcopy((char *) src, (char *) dest, n);
79 * Find the first ocurrence in @p s of any character in @p accept.
83 char *strpbrk(const char *s, const char *accept)
86 const char *a = accept;
88 if (*a++ == *s) return (char *)s;
100 * Like strncpy but does not 0 fill the buffer and always null
103 * @param bufsize is the size of the destination buffer.
105 * @return index of the terminating byte.
107 size_t strlcpy(char *d, const char *s, size_t bufsize)
109 size_t len = strlen(s);
123 * Like strncat() but does not 0 fill the buffer and always null
126 * @param bufsize length of the buffer, which should be one more than
127 * the maximum resulting string length.
129 size_t strlcat(char *d, const char *s, size_t bufsize)
131 size_t len1 = strlen(d);
132 size_t len2 = strlen(s);
133 size_t ret = len1 + len2;
135 if (len1 < bufsize - 1) {
136 if (len2 >= bufsize - len1)
137 len2 = bufsize - len1 - 1;
138 memcpy(d+len1, s, len2);
145 /* some systems don't take the 2nd argument */
146 int sys_gettimeofday(struct timeval *tv)
148 #ifdef HAVE_GETTIMEOFDAY_TZ
149 return gettimeofday(tv, NULL);
151 return gettimeofday(tv);
155 /* Return the int64 number as a string. If the human_flag arg is non-zero,
156 * we may output the number in K, M, or G units. We can return up to 4
157 * buffers at a time. */
158 char *big_num(int64 num, int human_flag)
160 static char bufs[4][128]; /* more than enough room */
161 static unsigned int n;
164 n = (n + 1) % (sizeof bufs / sizeof bufs[0]);
168 int mult = human_flag == 1 ? 1000 : 1024;
170 if (num > mult*mult*mult) {
171 dnum = (double)num / (mult*mult*mult);
173 } else if (num > mult*mult) {
174 dnum = (double)num / (mult*mult);
176 } else if (num > mult) {
177 dnum = (double)num / mult;
181 snprintf(bufs[n], sizeof bufs[0], "%.2f%c", dnum, units);
186 s = bufs[n] + sizeof bufs[0] - 1;
192 *--s = (char)(num % 10) + '0';