/*
** (c) 2004 Herbert Poetzl
**
** V0.01	flag ioctls
**
*/

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/utsname.h>
#include "vutil.h"
#include "linux/inode.h"
 
#ifdef O_LARGEFILE
#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE)
#else
#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK)
#endif



#define OPTIONS "+hdDeEf:"

static void usage()
{
	fprintf(stderr,
		"vproc " VERSION "\n"
		"vproc options filepath ...\n"
		"\n"
		"options are:\n"
		" -h        print this help message\n"
		" -d        hide in context > 1\n"
		" -D        hide in any context\n"
		" -e        show everywhere\n"
		" -E        show only in context 1\n");
}

int	main(int argc, char *argv[])
{
	extern int optind;
	char c;
	int errflg = 0;

	{
		struct utsname uts;
		if (uname(&uts)!=-1){
			//printf ("sysname :%s:\n",uts.sysname);
			//printf ("release :%s:\n",uts.release);
			if (strcmp(uts.release,"2.6.")< 0){
				fprintf (stderr,"vproc: Do nothing on old kernel\n");
				exit (0);
			}
		}else{
			// Can't tell the version of the OS, better do nothing
			fprintf (stderr,"Can't tell the version of the OS. Weird\n");
			exit (-1);
		}
	}

	int flag = 0;
	bool setflag = false;
	
	while ((c = getopt(argc, argv, OPTIONS)) != (char)EOF) {
		switch (c) {
		case 'h':
			usage();
			exit(0);
			break;
		case 'd':
			flag = IATTR_HIDE;
			setflag = true;
			break;
		case 'D':
			flag = IATTR_HIDE;
			setflag = true;
			break;
		case 'e':
			flag = IATTR_HIDE;
			setflag = false;
			break;
		case 'E':
			flag = IATTR_HIDE;
			setflag = false;
			break;
		default:
			errflg++;
			break;
		}
	}        
	if (errflg) {
		usage();
		exit(2);
	}
	if (optind == argc){
		usage();
		exit (0);
	}

	for (; optind < argc; optind++){
		const char *name = argv[optind];
		unsigned cur_flag;
		int r = call_get_iattr(name,&cur_flag);
		//fprintf (stderr,"get_iattr r=%d flag=%08x num_flag=%08x\n",r,cur_flag,flag);
		if (r){
			fprintf (stderr,"Can't get the flag on file %s (%s)\n",name,strerror(errno));
			errflg = 1;
			break;
		}else if (!r){
			r = call_set_iattr(name, setflag,flag);
			// fprintf (stderr,"set_iattr r=%d\n",r);
			if (r){
				fprintf (stderr,"Can't set the flag on file %s (%s)\n",name,strerror(errno));
				errflg = 1;
				break;
			}
		}
		
	    	#if 0
		if (!opt_flag) {
			static const char *where[] = {
				"visible everywhere",
				"visible on the host only",
				"visible in context 1 only",
				"hidden in user contexts"
			};
	   	 	fprintf(stdout,"%s is %s.\n",name, where[flag & 0x3]);
		}
		#endif
	}
	return errflg?1:0;
}