2 Unix SMB/CIFS implementation.
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 1998-2002
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.
23 #include "system/network.h"
24 #include "system/wait.h"
25 #include "system/filesys.h"
29 The idea is that this file will eventually have wrappers around all
30 important system calls in samba. The aims are:
32 - to enable easier porting by putting OS dependent stuff in here
34 - to allow for hooks into other "pseudo-filesystems"
36 - to allow easier integration of things like the japanese extensions
38 - to support the philosophy of Samba to expose the features of
39 the OS within the SMB model. In general whatever file/printer/variable
40 expansions/etc make sense to the OS should be acceptable to Samba.
45 /*******************************************************************
46 A wrapper for usleep in case we don't have one.
47 ********************************************************************/
49 int sys_usleep(long usecs)
56 * We need this braindamage as the glibc usleep
57 * is not SPEC1170 complient... grumble... JRA.
60 if(usecs < 0 || usecs > 1000000) {
68 #else /* HAVE_USLEEP */
70 * Fake it with select...
73 tval.tv_usec = usecs/1000;
74 select(0,NULL,NULL,NULL,&tval);
76 #endif /* HAVE_USLEEP */
80 /*******************************************************************
81 System wrapper for getwd
82 ********************************************************************/
83 char *sys_getwd(char *s)
87 wd = (char *)getcwd(s, sizeof (pstring));
89 wd = (char *)getwd(s);
94 /*******************************************************************
95 A read wrapper that will deal with EINTR.
96 ********************************************************************/
98 ssize_t sys_read(int fd, void *buf, size_t count)
103 ret = read(fd, buf, count);
104 } while (ret == -1 && errno == EINTR);
108 /*******************************************************************
109 A write wrapper that will deal with EINTR.
110 ********************************************************************/
112 ssize_t sys_write(int fd, const void *buf, size_t count)
117 ret = write(fd, buf, count);
118 } while (ret == -1 && errno == EINTR);
124 /*******************************************************************
125 os/2 also doesn't have chroot
126 ********************************************************************/
127 int sys_chroot(const char *dname)
132 DEBUG(1,("WARNING: no chroot!\n"));
138 return(chroot(dname));
142 /**************************************************************************
143 A wrapper for gethostbyname() that tries avoids looking up hostnames
144 in the root domain, which can cause dial-on-demand links to come up for no
146 ****************************************************************************/
148 struct hostent *sys_gethostbyname(const char *name)
150 #ifdef REDUCE_ROOT_DNS_LOOKUPS
151 char query[256], hostname[256];
154 /* Does this name have any dots in it? If so, make no change */
156 if (strchr_m(name, '.'))
157 return(gethostbyname(name));
159 /* Get my hostname, which should have domain name
160 attached. If not, just do the gethostname on the
164 gethostname(hostname, sizeof(hostname) - 1);
165 hostname[sizeof(hostname) - 1] = 0;
166 if ((domain = strchr_m(hostname, '.')) == NULL)
167 return(gethostbyname(name));
169 /* Attach domain name to query and do modified query.
170 If names too large, just do gethostname on the
174 if((strlen(name) + strlen(domain)) >= sizeof(query))
175 return(gethostbyname(name));
177 slprintf(query, sizeof(query)-1, "%s%s", name, domain);
178 return(gethostbyname(query));
179 #else /* REDUCE_ROOT_DNS_LOOKUPS */
180 return(gethostbyname(name));
181 #endif /* REDUCE_ROOT_DNS_LOOKUPS */
186 /**************************************************************************
187 Wrappers for dlopen, dlsym, dlclose.
188 ****************************************************************************/
190 void *sys_dlopen(const char *name, int flags)
192 #if defined(HAVE_DLOPEN)
193 return dlopen(name, flags);
199 void *sys_dlsym(void *handle, const char *symbol)
201 #if defined(HAVE_DLSYM)
202 return dlsym(handle, symbol);
208 const char *sys_dlerror(void)
210 #if defined(HAVE_DLERROR)
217 const char *sys_inet_ntoa(struct ipv4_addr in)
220 in2.s_addr = in.addr;
221 return inet_ntoa(in2);
224 uint32_t sys_inet_addr(const char *s)
229 struct ipv4_addr sys_inet_makeaddr(int net, int host)
232 struct ipv4_addr in2;
233 in = inet_makeaddr(net, host);
234 in2.addr = in.s_addr;