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/*
Unix SMB/Netbios implementation.
Version 1.9.
Samba system utilities
Copyright (C) Andrew Tridgell 1992-1995
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"
extern int DEBUGLEVEL;
/*
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.
*/
/*******************************************************************
this replaces the normal select() system call
return if some data has arrived on one of the file descriptors
return -1 means error
********************************************************************/
#ifdef NO_SELECT
static int pollfd(int fd)
{
int r=0;
#ifdef HAS_RDCHK
r = rdchk(fd);
#elif defined(TCRDCHK)
(void)ioctl(fd, TCRDCHK, &r);
#else
(void)ioctl(fd, FIONREAD, &r);
#endif
return(r);
}
int sys_select(fd_set *fds,struct timeval *tval)
{
fd_set fds2;
int counter=0;
int found=0;
FD_ZERO(&fds2);
while (1)
{
int i;
for (i=0;i<255;i++) {
if (FD_ISSET(i,fds) && pollfd(i)>0) {
found++;
FD_SET(i,&fds2);
}
}
if (found) {
memcpy((void *)fds,(void *)&fds2,sizeof(fds2));
return(found);
}
if (tval && tval->tv_sec < counter) return(0);
sleep(1);
counter++;
}
}
#else
int sys_select(fd_set *fds,struct timeval *tval)
{
struct timeval t2;
int selrtn;
do {
if (tval) memcpy((void *)&t2,(void *)tval,sizeof(t2));
errno = 0;
selrtn = select(255,SELECT_CAST fds,NULL,NULL,tval?&t2:NULL);
} while (selrtn<0 && errno == EINTR);
return(selrtn);
}
#endif
/*******************************************************************
just a unlink wrapper
********************************************************************/
int sys_unlink(char *fname)
{
return(unlink(dos_to_unix(fname,False)));
}
/*******************************************************************
a simple open() wrapper
********************************************************************/
int sys_open(char *fname,int flags,int mode)
{
return(open(dos_to_unix(fname,False),flags,mode));
}
/*******************************************************************
a simple opendir() wrapper
********************************************************************/
DIR *sys_opendir(char *dname)
{
return(opendir(dos_to_unix(dname,False)));
}
/*******************************************************************
and a stat() wrapper
********************************************************************/
int sys_stat(char *fname,struct stat *sbuf)
{
return(stat(dos_to_unix(fname,False),sbuf));
}
/*******************************************************************
The wait() calls vary between systems
********************************************************************/
int sys_waitpid(pid_t pid,int *status,int options)
{
#ifdef USE_WAITPID
return waitpid(pid,status,options);
#else
return wait4(pid,status,options,NULL);
#endif
}
/*******************************************************************
don't forget lstat()
********************************************************************/
int sys_lstat(char *fname,struct stat *sbuf)
{
return(lstat(dos_to_unix(fname,False),sbuf));
}
/*******************************************************************
mkdir() gets a wrapper
********************************************************************/
int sys_mkdir(char *dname,int mode)
{
return(mkdir(dos_to_unix(dname,False),mode));
}
/*******************************************************************
do does rmdir()
********************************************************************/
int sys_rmdir(char *dname)
{
return(rmdir(dos_to_unix(dname,False)));
}
/*******************************************************************
I almost forgot chdir()
********************************************************************/
int sys_chdir(char *dname)
{
return(chdir(dos_to_unix(dname,False)));
}
/*******************************************************************
now for utime()
********************************************************************/
int sys_utime(char *fname,struct utimbuf *times)
{
return(utime(dos_to_unix(fname,False),times));
}
/*******************************************************************
for rename()
********************************************************************/
int sys_rename(char *from, char *to)
{
#ifdef KANJI
pstring zfrom, zto;
strcpy (zfrom, dos_to_unix (from, False));
strcpy (zto, dos_to_unix (to, False));
return rename (zfrom, zto);
#else
return rename (from, to);
#endif /* KANJI */
}
/*******************************************************************
for chmod
********************************************************************/
int sys_chmod(char *fname,int mode)
{
return(chmod(dos_to_unix(fname,False),mode));
}
/*******************************************************************
chown isn't used much but OS/2 doesn't have it
********************************************************************/
int sys_chown(char *fname,int uid,int gid)
{
#ifdef NO_CHOWN
DEBUG(1,("Warning - chown(%s,%d,%d) not done\n",fname,uid,gid));
#else
return(chown(fname,uid,gid));
#endif
}
/*******************************************************************
os/2 also doesn't have chroot
********************************************************************/
int sys_chroot(char *dname)
{
#ifdef NO_CHROOT
DEBUG(1,("Warning - chroot(%s) not done\n",dname));
#else
return(chroot(dname));
#endif
}
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