2 * Utility routines used in rsync.
4 * Copyright (C) 1996-2000 Andrew Tridgell
5 * Copyright (C) 1996 Paul Mackerras
6 * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
7 * Copyright (C) 2003-2014 Wayne Davison
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, visit the http://fsf.org website.
28 extern int checksum_len;
31 * Sleep for a specified number of milliseconds.
33 * Always returns TRUE. (In the future it might return FALSE if
42 struct timeval tval, t1, t2;
44 gettimeofday(&t1, NULL);
47 tval.tv_sec = (t-tdiff)/1000;
48 tval.tv_usec = 1000*((t-tdiff)%1000);
51 select(0,NULL,NULL, NULL, &tval);
53 gettimeofday(&t2, NULL);
54 tdiff = (t2.tv_sec - t1.tv_sec)*1000 +
55 (t2.tv_usec - t1.tv_usec)/1000;
57 t1 = t2; /* Time went backwards, so start over. */
64 #define MALLOC_MAX 0x40000000
66 void *_new_array(unsigned long num, unsigned int size, int use_calloc)
68 if (num >= MALLOC_MAX/size)
70 return use_calloc ? calloc(num, size) : malloc(num * size);
73 void *_realloc_array(void *ptr, unsigned int size, size_t num)
75 if (num >= MALLOC_MAX/size)
78 return malloc(size * num);
79 return realloc(ptr, size * num);
82 const char *sum_as_hex(const char *sum)
84 static char buf[MAX_DIGEST_LEN*2+1];
86 char *c = buf + checksum_len*2;
88 assert(c - buf < (int)sizeof buf);
92 for (i = checksum_len; --i >= 0; ) {
96 *--c = x1 <= 9 ? x1 + '0' : x1 + 'a' - 10;
97 *--c = x2 <= 9 ? x2 + '0' : x2 + 'a' - 10;
103 NORETURN void out_of_memory(const char *str)
105 rprintf(FERROR, "ERROR: out of memory in %s [%s]\n", str, who_am_i());
106 exit_cleanup(RERR_MALLOC);
109 NORETURN void overflow_exit(const char *str)
111 rprintf(FERROR, "ERROR: buffer overflow in %s [%s]\n", str, who_am_i());
112 exit_cleanup(RERR_MALLOC);