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UNIX操作系統(tǒng)tar命令之隱患及解決方法( 三 )

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seekip=fseek(fp,－TBLOCK,SEEK_CUR);
if(seekip==0)
{
if(fwrite((dblock.dummy),TBLOCK,1,fp)!=1)
{
printf(″Can not read the ％s!n″,argv[2]);
break;
}
fflush(fp);
}
}
sscanf(dblock.dbuf.size,″％12o″,＆filesize);
sscanf(dblock,dbuf.chksum,″％6o″,＆sum_v);
sum_v=sum_v－sum－0400－compc;
if(filesize>0＆＆(dblock.dbuf.linkflag==0x00|| dbloc
k.dbuf.chksum[0]==0x33))
{
mvblock=(filesize－1)/TBLOCK＋1;
seekip=fseek(fp,(long)mvblock＊TBLOCK,SEEK
_CUR);
}
seekip=fseek(fp,0L,SEEK_CUR);
if(dblock.dbuf.linkflag==″1″)
printf(″％snttnormal linked to ％sttcompress=[％c]tsum_v=％on″,
dblock.dbuf.name,dblock.dbuf.linkname,dblock.dbuf.
compid,sum－v);
else if (dblock.dbuf.linkflag==″2″)
printf(″％snttsymbolic linked to ％stcompress=[％c]tsum_v=％on,
″dblock.dbuf.name,dblock.dbuf.linkname,dblock.dbuf.
compid,sum_v);
else
printf(″％snt ％8d byte－－>％6d tape_blockstcompress=[％c]tsum_v=％on″,dblock.dbuf.name,filesize,mvblock,dblock.dbuf.cmpid,sum_v);

}
printf(″Total=％dKn″,ftell(fp)/1024);
fclose(fp);
}

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