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author | Jelmer Vernooij <jelmer@samba.org> | 2006-02-23 15:52:24 +0000 |
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committer | Gerald (Jerry) Carter <jerry@samba.org> | 2007-10-10 13:52:05 -0500 |
commit | dfc517b05395d925a4d7b1ce9633a849f9468e70 (patch) | |
tree | a81c020c89022980e6fbb68116648da217fbb0fc /source4/lib/util/system.c | |
parent | 80c8a522861068e7b0974986936f65052dd6f70f (diff) | |
download | samba-dfc517b05395d925a4d7b1ce9633a849f9468e70.tar.gz samba-dfc517b05395d925a4d7b1ce9633a849f9468e70.tar.bz2 samba-dfc517b05395d925a4d7b1ce9633a849f9468e70.zip |
r13658: More moving around of files:
- Collect the generic utility functions into a lib/util/ (a la GLib is
for the GNOME folks)
- Remove even more files from include/
(This used to be commit ba62880f5b05c2a505dc7f54676b231197a7e707)
Diffstat (limited to 'source4/lib/util/system.c')
-rw-r--r-- | source4/lib/util/system.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/source4/lib/util/system.c b/source4/lib/util/system.c new file mode 100644 index 0000000000..655b4a1054 --- /dev/null +++ b/source4/lib/util/system.c @@ -0,0 +1,98 @@ +/* + Unix SMB/CIFS implementation. + Samba system utilities + Copyright (C) Andrew Tridgell 1992-1998 + Copyright (C) Jeremy Allison 1998-2002 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include "includes.h" +#include "system/network.h" +#include "system/filesys.h" + +/* + The idea is that this file will eventually have wrappers around all + important system calls in samba. The aims are: + + - to enable easier porting by putting OS dependent stuff in here + + - to allow for hooks into other "pseudo-filesystems" + + - to allow easier integration of things like the japanese extensions + + - to support the philosophy of Samba to expose the features of + the OS within the SMB model. In general whatever file/printer/variable + expansions/etc make sense to the OS should be acceptable to Samba. +*/ + +/************************************************************************** +A wrapper for gethostbyname() that tries avoids looking up hostnames +in the root domain, which can cause dial-on-demand links to come up for no +apparent reason. +****************************************************************************/ + +struct hostent *sys_gethostbyname(const char *name) +{ +#ifdef REDUCE_ROOT_DNS_LOOKUPS + char query[256], hostname[256]; + char *domain; + + /* Does this name have any dots in it? If so, make no change */ + + if (strchr_m(name, '.')) + return(gethostbyname(name)); + + /* Get my hostname, which should have domain name + attached. If not, just do the gethostname on the + original string. + */ + + gethostname(hostname, sizeof(hostname) - 1); + hostname[sizeof(hostname) - 1] = 0; + if ((domain = strchr_m(hostname, '.')) == NULL) + return(gethostbyname(name)); + + /* Attach domain name to query and do modified query. + If names too large, just do gethostname on the + original string. + */ + + if((strlen(name) + strlen(domain)) >= sizeof(query)) + return(gethostbyname(name)); + + slprintf(query, sizeof(query)-1, "%s%s", name, domain); + return(gethostbyname(query)); +#else /* REDUCE_ROOT_DNS_LOOKUPS */ + return(gethostbyname(name)); +#endif /* REDUCE_ROOT_DNS_LOOKUPS */ +} + +const char *sys_inet_ntoa(struct ipv4_addr in) +{ + struct in_addr in2; + in2.s_addr = in.addr; + return inet_ntoa(in2); +} + +struct ipv4_addr sys_inet_makeaddr(int net, int host) +{ + struct in_addr in; + struct ipv4_addr in2; + in = inet_makeaddr(net, host); + in2.addr = in.s_addr; + return in2; +} + |