2 Unix SMB/CIFS implementation.
3 replacement routines for broken systems
4 Copyright (C) Andrew Tridgell 1992-1998
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 void replace_dummy(void);
24 void replace_dummy(void) {}
26 #ifndef HAVE_FTRUNCATE
27 /*******************************************************************
28 ftruncate for operating systems that don't have it
29 ********************************************************************/
30 int ftruncate(int f
,SMB_OFF_T l
)
38 return fcntl(f
, F_FREESP
, &fl
);
40 #endif /* HAVE_FTRUNCATE */
44 /* like strncpy but does not 0 fill the buffer and always null
45 terminates. bufsize is the size of the destination buffer */
46 size_t strlcpy(char *d
, const char *s
, size_t bufsize
)
48 size_t len
= strlen(s
);
50 if (bufsize
<= 0) return 0;
51 if (len
>= bufsize
) len
= bufsize
-1;
59 /* like strncat but does not 0 fill the buffer and always null
60 terminates. bufsize is the length of the buffer, which should
61 be one more than the maximum resulting string length */
62 size_t strlcat(char *d
, const char *s
, size_t bufsize
)
64 size_t len1
= strlen(d
);
65 size_t len2
= strlen(s
);
66 size_t ret
= len1
+ len2
;
68 if (len1
>= bufsize
) {
71 if (len1
+len2
>= bufsize
) {
72 len2
= bufsize
- (len1
+1);
75 memcpy(d
+len1
, s
, len2
);
83 /*******************************************************************
84 a mktime() replacement for those who don't have it - contributed by
85 C.A. Lademann <cal@zls.com>
86 Corrections by richard.kettlewell@kewill.com
87 ********************************************************************/
90 #define HOUR 60*MINUTE
93 time_t mktime(struct tm
*t
)
98 int mon
[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
104 n
= t
->tm_year
+ 1900 - 1;
105 epoch
= (t
->tm_year
- 70) * YEAR
+
106 ((n
/ 4 - n
/ 100 + n
/ 400) - (1969 / 4 - 1969 / 100 + 1969 / 400)) * DAY
;
108 y
= t
->tm_year
+ 1900;
111 for(i
= 0; i
< t
->tm_mon
; i
++) {
112 epoch
+= mon
[m
] * DAY
;
113 if(m
== 1 && y
% 4 == 0 && (y
% 100 != 0 || y
% 400 == 0))
122 epoch
+= (t
->tm_mday
- 1) * DAY
;
123 epoch
+= t
->tm_hour
* HOUR
+ t
->tm_min
* MINUTE
+ t
->tm_sec
;
125 if((u
= localtime(&epoch
)) != NULL
) {
126 t
->tm_sec
= u
->tm_sec
;
127 t
->tm_min
= u
->tm_min
;
128 t
->tm_hour
= u
->tm_hour
;
129 t
->tm_mday
= u
->tm_mday
;
130 t
->tm_mon
= u
->tm_mon
;
131 t
->tm_year
= u
->tm_year
;
132 t
->tm_wday
= u
->tm_wday
;
133 t
->tm_yday
= u
->tm_yday
;
134 t
->tm_isdst
= u
->tm_isdst
;
139 #endif /* !HAVE_MKTIME */
144 /* Rename a file. (from libiberty in GNU binutils) */
145 int rename(const char *zfrom
, const char *zto
)
147 if (link (zfrom
, zto
) < 0)
152 || link (zfrom
, zto
) < 0)
155 return unlink (zfrom
);
157 #endif /* HAVE_RENAME */
161 #if defined(HAVE_SETNETGRENT) && defined(HAVE_GETNETGRENT) && defined(HAVE_ENDNETGRENT)
163 * Search for a match in a netgroup. This replaces it on broken systems.
165 int innetgr(const char *group
,const char *host
,const char *user
,const char *dom
)
167 char *hst
, *usr
, *dm
;
170 while (getnetgrent(&hst
, &usr
, &dm
)) {
171 if (((host
== 0) || (hst
== 0) || !strcmp(host
, hst
)) &&
172 ((user
== 0) || (usr
== 0) || !strcmp(user
, usr
)) &&
173 ((dom
== 0) || (dm
== 0) || !strcmp(dom
, dm
))) {
181 #endif /* HAVE_SETNETGRENT HAVE_GETNETGRENT HAVE_ENDNETGRENT */
182 #endif /* HAVE_INNETGR */
186 #ifndef HAVE_INITGROUPS
187 /****************************************************************************
188 some systems don't have an initgroups call
189 ****************************************************************************/
190 int initgroups(char *name
,gid_t id
)
192 #ifndef HAVE_SETGROUPS
195 DEBUG(1,("WARNING: running without setgroups\n"));
198 /* yikes! no SETGROUPS or INITGROUPS? how can this work? */
200 #else /* HAVE_SETGROUPS */
201 gid_t
*grouplst
= NULL
;
202 int max_gr
= groups_max();
208 if((grouplst
= (gid_t
*)malloc(sizeof(gid_t
) * max_gr
)) == NULL
) {
209 DEBUG(0,("initgroups: malloc fail !\n"));
215 while (i
< max_gr
&& ((g
= (struct group
*)getgrent()) != (struct group
*)NULL
)) {
220 while (gr
&& (*gr
!= (char)NULL
)) {
221 if (strcmp(name
,gr
) == 0) {
222 grouplst
[i
] = g
->gr_gid
;
231 ret
= sys_setgroups(i
,grouplst
);
234 #endif /* HAVE_SETGROUPS */
236 #endif /* HAVE_INITGROUPS */
239 #if (defined(SecureWare) && defined(SCO))
240 /* This is needed due to needing the nap() function but we don't want
241 to include the Xenix libraries since that will break other things...
242 BTW: system call # 0x0c28 is the same as calling nap() */
243 long nap(long milliseconds
) {
244 return syscall(0x0c28, milliseconds
);
250 /*******************************************************************
251 safely copies memory, ensuring no overlap problems.
252 this is only used if the machine does not have it's own memmove().
253 this is not the fastest algorithm in town, but it will do for our
255 ********************************************************************/
256 void *memmove(void *dest
,const void *src
,int size
)
260 if (dest
==src
|| !size
) return(dest
);
262 d
= (unsigned long)dest
;
263 s
= (unsigned long)src
;
265 if ((d
>= (s
+size
)) || (s
>= (d
+size
))) {
267 memcpy(dest
,src
,size
);
272 /* we can forward copy */
273 if (s
-d
>= sizeof(int) &&
276 !(size
%sizeof(int))) {
277 /* do it all as words */
278 int *idest
= (int *)dest
;
279 int *isrc
= (int *)src
;
281 for (i
=0;i
<size
;i
++) idest
[i
] = isrc
[i
];
284 char *cdest
= (char *)dest
;
285 char *csrc
= (char *)src
;
286 for (i
=0;i
<size
;i
++) cdest
[i
] = csrc
[i
];
289 /* must backward copy */
290 if (d
-s
>= sizeof(int) &&
293 !(size
%sizeof(int))) {
294 /* do it all as words */
295 int *idest
= (int *)dest
;
296 int *isrc
= (int *)src
;
298 for (i
=size
-1;i
>=0;i
--) idest
[i
] = isrc
[i
];
301 char *cdest
= (char *)dest
;
302 char *csrc
= (char *)src
;
303 for (i
=size
-1;i
>=0;i
--) cdest
[i
] = csrc
[i
];
308 #endif /* HAVE_MEMMOVE */
311 /****************************************************************************
313 ****************************************************************************/
314 char *strdup(const char *s
)
319 if (!s
) return(NULL
);
322 ret
= (char *)malloc(len
);
323 if (!ret
) return(NULL
);
327 #endif /* HAVE_STRDUP */
329 #ifdef REPLACE_INET_NTOA
330 char *rep_inet_ntoa(struct in_addr ip
)
332 unsigned char *p
= (unsigned char *)&ip
.s_addr
;
334 slprintf(buf
, 17, "%d.%d.%d.%d",
335 (int)p
[0], (int)p
[1], (int)p
[2], (int)p
[3]);
338 #endif /* REPLACE_INET_NTOA */
342 #define ULONG_MAX ((unsigned long)(~0L)) /* 0xFFFFFFFF */
346 * Convert a string to an unsigned long integer.
347 * Taken from libg++ - libiberty code.
349 * Ignores `locale' stuff. Assumes that the upper and lower case
350 * alphabets and digits are each contiguous.
352 unsigned long strtoul(const char *nptr
, char **endptr
, int base
)
354 const char *s
= nptr
;
357 unsigned long cutoff
;
358 int neg
= 0, any
, cutlim
;
361 * See strtol for comments as to the logic used.
365 } while (isspace(c
));
371 if ((base
== 0 || base
== 16) &&
372 c
== '0' && (*s
== 'x' || *s
== 'X')) {
378 base
= c
== '0' ? 8 : 10;
379 cutoff
= (unsigned long)ULONG_MAX
/ (unsigned long)base
;
380 cutlim
= (int)((unsigned long)ULONG_MAX
% (unsigned long)base
);
381 for (acc
= 0, any
= 0;; c
= *s
++) {
385 c
-= isupper(c
) ? 'A' - 10 : 'a' - 10;
390 if (any
< 0 || acc
> cutoff
|| acc
== cutoff
&& c
> cutlim
)
404 *endptr
= (char *) (any
? s
- 1 : nptr
);
407 #endif /* HAVE_STRTOUL */
409 #ifndef HAVE_SETLINEBUF
410 int setlinebuf(FILE *stream
)
412 return setvbuf(stream
, (char *)NULL
, _IOLBF
, 0);
414 #endif /* HAVE_SETLINEBUF */
418 void vsyslog (int facility_priority
, char *format
, va_list arglist
)
421 vasprintf(&msg
, format
, arglist
);
424 syslog(facility_priority
, "%s", msg
);
427 #endif /* HAVE_SYSLOG */
428 #endif /* HAVE_VSYSLOG */
433 yes, I know this looks insane, but its really needed. The function in the
434 Linux timegm() manpage does not work on solaris.
436 time_t timegm(struct tm
*tm
)
444 tm3
= *localtime(&t
);
446 tm2
.tm_isdst
= tm3
.tm_isdst
;