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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1982-2010 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* David Korn <dgk@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
/*
* umask [-S] [mask]
*
* David Korn
* AT&T Labs
* research!dgk
*
*/
#include <ast.h>
#include <sfio.h>
#include <error.h>
#include <ctype.h>
#include <ls.h>
#include <shell.h>
#include "builtins.h"
#ifndef SH_DICT
# define SH_DICT "libshell"
#endif
int b_umask(int argc,char *argv[],void *extra)
{
register char *mask;
register int flag = 0, sflag = 0;
NOT_USED(extra);
while((argc = optget(argv,sh_optumask))) switch(argc)
{
case 'S':
sflag++;
break;
case ':':
errormsg(SH_DICT,2, "%s", opt_info.arg);
break;
case '?':
errormsg(SH_DICT,ERROR_usage(2), "%s",opt_info.arg);
break;
}
if(error_info.errors)
errormsg(SH_DICT,ERROR_usage(2),"%s",optusage((char*)0));
argv += opt_info.index;
if(mask = *argv)
{
register int c;
if(isdigit(*mask))
{
while(c = *mask++)
{
if (c>='0' && c<='7')
flag = (flag<<3) + (c-'0');
else
errormsg(SH_DICT,ERROR_exit(1),e_number,*argv);
}
}
else
{
char *cp = mask;
flag = umask(0);
c = strperm(cp,&cp,~flag&0777);
if(*cp)
{
umask(flag);
errormsg(SH_DICT,ERROR_exit(1),e_format,mask);
}
flag = (~c&0777);
}
umask(flag);
}
else
{
umask(flag=umask(0));
if(sflag)
sfprintf(sfstdout,"%s\n",fmtperm(~flag&0777));
else
sfprintf(sfstdout,"%0#4o\n",flag);
}
return(0);
}
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