2 Unix SMB/Netbios implementation.
4 replacement routines for broken systems
5 Copyright (C) Andrew Tridgell 1992-1998
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 extern int DEBUGLEVEL;
26 void replace_dummy(void);
27 void replace_dummy(void) {}
30 #ifndef HAVE_FTRUNCATE
31 /*******************************************************************
32 ftruncate for operating systems that don't have it
33 ********************************************************************/
34 int ftruncate(int f,SMB_OFF_T l)
42 return fcntl(f, F_FREESP, &fl);
44 #endif /* HAVE_FTRUNCATE */
48 /*******************************************************************
49 a mktime() replacement for those who don't have it - contributed by
50 C.A. Lademann <cal@zls.com>
51 Corrections by richard.kettlewell@kewill.com
52 ********************************************************************/
55 #define HOUR 60*MINUTE
58 time_t mktime(struct tm *t)
63 int mon [] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
69 n = t->tm_year + 1900 - 1;
70 epoch = (t->tm_year - 70) * YEAR +
71 ((n / 4 - n / 100 + n / 400) - (1969 / 4 - 1969 / 100 + 1969 / 400)) * DAY;
73 y = t->tm_year + 1900;
76 for(i = 0; i < t->tm_mon; i++) {
77 epoch += mon [m] * DAY;
78 if(m == 1 && y % 4 == 0 && (y % 100 != 0 || y % 400 == 0))
87 epoch += (t->tm_mday - 1) * DAY;
88 epoch += t->tm_hour * HOUR + t->tm_min * MINUTE + t->tm_sec;
90 if((u = localtime(&epoch)) != NULL) {
91 t->tm_sec = u->tm_sec;
92 t->tm_min = u->tm_min;
93 t->tm_hour = u->tm_hour;
94 t->tm_mday = u->tm_mday;
95 t->tm_mon = u->tm_mon;
96 t->tm_year = u->tm_year;
97 t->tm_wday = u->tm_wday;
98 t->tm_yday = u->tm_yday;
99 t->tm_isdst = u->tm_isdst;
104 #endif /* !HAVE_MKTIME */
109 /* Rename a file. (from libiberty in GNU binutils) */
110 int rename(const char *zfrom, const char *zto)
112 if (link (zfrom, zto) < 0)
117 || link (zfrom, zto) < 0)
120 return unlink (zfrom);
122 #endif /* HAVE_RENAME */
126 #if defined(HAVE_SETNETGRENT) && defined(HAVE_GETNETGRENT) && defined(HAVE_ENDNETGRENT)
128 * Search for a match in a netgroup. This replaces it on broken systems.
130 int innetgr(char *group,char *host,char *user,char *dom)
132 char *hst, *usr, *dm;
135 while (getnetgrent(&hst, &usr, &dm)) {
136 if (((host == 0) || (hst == 0) || !strcmp(host, hst)) &&
137 ((user == 0) || (usr == 0) || !strcmp(user, usr)) &&
138 ((dom == 0) || (dm == 0) || !strcmp(dom, dm))) {
146 #endif /* HAVE_SETNETGRENT HAVE_GETNETGRENT HAVE_ENDNETGRENT */
147 #endif /* HAVE_INNETGR */
151 #ifndef HAVE_INITGROUPS
152 /****************************************************************************
153 some systems don't have an initgroups call
154 ****************************************************************************/
155 int initgroups(char *name,gid_t id)
157 #ifndef HAVE_SETGROUPS
160 DEBUG(1,("WARNING: running without setgroups\n"));
163 /* yikes! no SETGROUPS or INITGROUPS? how can this work? */
165 #else /* HAVE_SETGROUPS */
166 gid_t grouplst[NGROUPS_MAX];
173 while (i < NGROUPS_MAX &&
174 ((g = (struct group *)getgrent()) != (struct group *)NULL)) {
179 while (gr && (*gr != (char)NULL)) {
180 if (strcmp(name,gr) == 0) {
181 grouplst[i] = g->gr_gid;
190 return(sys_setgroups(i,grouplst));
191 #endif /* HAVE_SETGROUPS */
193 #endif /* HAVE_INITGROUPS */
196 #if (defined(SecureWare) && defined(SCO))
197 /* This is needed due to needing the nap() function but we don't want
198 to include the Xenix libraries since that will break other things...
199 BTW: system call # 0x0c28 is the same as calling nap() */
200 long nap(long milliseconds) {
201 return syscall(0x0c28, milliseconds);
207 /*******************************************************************
208 safely copies memory, ensuring no overlap problems.
209 this is only used if the machine does not have it's own memmove().
210 this is not the fastest algorithm in town, but it will do for our
212 ********************************************************************/
213 void *memmove(void *dest,const void *src,int size)
217 if (dest==src || !size) return(dest);
219 d = (unsigned long)dest;
220 s = (unsigned long)src;
222 if ((d >= (s+size)) || (s >= (d+size))) {
224 memcpy(dest,src,size);
229 /* we can forward copy */
230 if (s-d >= sizeof(int) &&
233 !(size%sizeof(int))) {
234 /* do it all as words */
235 int *idest = (int *)dest;
236 int *isrc = (int *)src;
238 for (i=0;i<size;i++) idest[i] = isrc[i];
241 char *cdest = (char *)dest;
242 char *csrc = (char *)src;
243 for (i=0;i<size;i++) cdest[i] = csrc[i];
246 /* must backward copy */
247 if (d-s >= sizeof(int) &&
250 !(size%sizeof(int))) {
251 /* do it all as words */
252 int *idest = (int *)dest;
253 int *isrc = (int *)src;
255 for (i=size-1;i>=0;i--) idest[i] = isrc[i];
258 char *cdest = (char *)dest;
259 char *csrc = (char *)src;
260 for (i=size-1;i>=0;i--) cdest[i] = csrc[i];
265 #endif /* HAVE_MEMMOVE */
268 /****************************************************************************
270 ****************************************************************************/
271 char *strdup(const char *s)
276 if (!s) return(NULL);
279 ret = (char *)malloc(len);
280 if (!ret) return(NULL);
284 #endif /* HAVE_STRDUP */
286 #ifdef REPLACE_INET_NTOA
287 char *rep_inet_ntoa(struct in_addr ip)
289 unsigned char *p = (unsigned char *)&ip.s_addr;
292 slprintf(buf, 17, "%d.%d.%d.%d",
293 (int)p[0], (int)p[1], (int)p[2], (int)p[3]);
294 #else /* WORDS_BIGENDIAN */
295 slprintf(buf, 17, "%d.%d.%d.%d",
296 (int)p[3], (int)p[2], (int)p[1], (int)p[0]);
297 #endif /* WORDS_BIGENDIAN */
300 #endif /* REPLACE_INET_NTOA */
304 #define ULONG_MAX ((unsigned long)(~0L)) /* 0xFFFFFFFF */
308 * Convert a string to an unsigned long integer.
309 * Taken from libg++ - libiberty code.
311 * Ignores `locale' stuff. Assumes that the upper and lower case
312 * alphabets and digits are each contiguous.
314 unsigned long strtoul(const char *nptr, char **endptr, int base)
316 const char *s = nptr;
319 unsigned long cutoff;
320 int neg = 0, any, cutlim;
323 * See strtol for comments as to the logic used.
327 } while (isspace(c));
333 if ((base == 0 || base == 16) &&
334 c == '0' && (*s == 'x' || *s == 'X')) {
340 base = c == '0' ? 8 : 10;
341 cutoff = (unsigned long)ULONG_MAX / (unsigned long)base;
342 cutlim = (int)((unsigned long)ULONG_MAX % (unsigned long)base);
343 for (acc = 0, any = 0;; c = *s++) {
347 c -= isupper(c) ? 'A' - 10 : 'a' - 10;
352 if (any < 0 || acc > cutoff || acc == cutoff && c > cutlim)
366 *endptr = (char *) (any ? s - 1 : nptr);
369 #endif /* HAVE_STRTOUL */