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) 2003-2020 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.
29 * Sleep for a specified number of milliseconds.
31 * Always returns True.
39 ts.tv_nsec = (t % 1000) * 1000000L;
41 while (nanosleep(&ts, &ts) < 0 && errno == EINTR) {}
43 #elif defined HAVE_USLEEP
48 struct timeval tval, t1, t2;
50 gettimeofday(&t1, NULL);
53 tval.tv_sec = (t-tdiff)/1000;
54 tval.tv_usec = 1000*((t-tdiff)%1000);
57 select(0,NULL,NULL, NULL, &tval);
59 gettimeofday(&t2, NULL);
60 tdiff = (t2.tv_sec - t1.tv_sec)*1000 +
61 (t2.tv_usec - t1.tv_usec)/1000;
63 t1 = t2; /* Time went backwards, so start over. */
70 #define MALLOC_MAX 0x40000000
72 void *_new_array(unsigned long num, unsigned int size, int use_calloc)
74 if (num >= MALLOC_MAX/size)
76 return use_calloc ? calloc(num, size) : malloc(num * size);
79 void *_realloc_array(void *ptr, unsigned int size, size_t num)
81 if (num >= MALLOC_MAX/size)
84 return malloc(size * num);
85 return realloc(ptr, size * num);
88 const char *sum_as_hex(int csum_type, const char *sum, int flist_csum)
90 static char buf[MAX_DIGEST_LEN*2+1];
92 int canonical = canonical_checksum(csum_type);
93 int sum_len = csum_len_for_type(csum_type, flist_csum);
99 assert(sum_len*2 < (int)sizeof buf);
101 for (i = sum_len, c = buf; --i >= 0; ) {
102 int ndx = canonical < 0 ? sum_len - i - 1 : i;
106 *c++ = x1 <= 9 ? x1 + '0' : x1 + 'a' - 10;
107 *c++ = x2 <= 9 ? x2 + '0' : x2 + 'a' - 10;
115 NORETURN void out_of_memory(const char *str)
117 rprintf(FERROR, "ERROR: out of memory in %s [%s]\n", str, who_am_i());
118 exit_cleanup(RERR_MALLOC);
121 NORETURN void overflow_exit(const char *str)
123 rprintf(FERROR, "ERROR: buffer overflow in %s [%s]\n", str, who_am_i());
124 exit_cleanup(RERR_MALLOC);