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/* (C)2001,2002 by LGB (Gábor Lénárt), lgb@lgb.hu
Part of MPlayer project, this source is copyrighted according to GNU/GPL. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include "mp_msg.h"
#ifndef FIBMAP
#define FIBMAP 1
#endif
int main ( int argc , char ** argv )
{
int fd,ret,lba=0;
if (geteuid()!=0) {
mp_msg(MSGT_CPLAYER,MSGL_FATAL, "%s must be setuid root to work\n",
argv[0]);
return 1;
}
if (seteuid(getuid()) == -1) {
mp_msg(MSGT_CPLAYER,MSGL_FATAL, "Couldn't drop privileges: %s\n",
strerror(errno));
return 1;
}
if (argc!=2 || argv[1]==NULL) {
mp_msg(MSGT_CPLAYER,MSGL_FATAL,"Usage: %s <filename>\n", argv[0]);
return 1;
}
if ((fd = open(argv[1], O_RDONLY)) == -1) {
mp_msg(MSGT_CPLAYER,MSGL_FATAL,"Cannot open file %s: %s\n",
argv[1], strerror(errno));
return 1;
}
if (seteuid(0) == -1) {
mp_msg(MSGT_CPLAYER,MSGL_FATAL, "Couldn't restore root privileges: %s\n",
strerror(errno));
return 1;
}
ret = ioctl(fd, FIBMAP, &lba);
if (seteuid(getuid()) == -1) {
mp_msg(MSGT_CPLAYER,MSGL_FATAL, "Couldn't re-drop privileges: %s\n",
strerror(errno));
return 1;
}
close(fd);
if (ret != 0) {
mp_msg(MSGT_CPLAYER,MSGL_FATAL,"fibmap ioctl failed: %s\n",
strerror(errno));
return 1;
}
printf("%d\n",lba);
return 0;
}
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