[9fans] tarfs & 2GB limit

[erik quanstrom <quanstro@quanstro.net>]

this works for me on p9p. but the limit on tarball size is 1TB (512 bytes * 2GB).
i have not tested this for individual files in a tarball that are bigger than 2GB.

i've attached the diffs with the plan9 cd, excluding the p9p stuff.

- erik

; rcsdiff tapefs.h 
===================================================================
RCS file: RCS/tapefs.h,v
retrieving revision 1.1
diff -r1.1 tapefs.h
42c42
< 	long	ndata;
---
> 	vlong	ndata;
63c63
< 	long	size;
---
> 	vlong	size;
; rcsdiff tar*.c
===================================================================
RCS file: RCS/tarfs.c,v
retrieving revision 1.1
diff -r1.1 tarfs.c
38c38,39
< 	long blkno, isabs, chksum, linkflg;
---
> 	vlong blkno;
> 	long isabs, chksum, linkflg;
51c52
< 		f.addr = (void*)(blkno+1);
---
> 		f.addr = (void*)((ulong)blkno+1);
55c56
< 		f.size = strtoul(dblock.dbuf.size, 0, 8);
---
> 		f.size = strtoull(dblock.dbuf.size, 0, 8);
102c103
< 	seek(tapefile, (TBLOCK * (long)r->data)+off, 0);
---
> 	seek(tapefile, (TBLOCK * (vlong)r->data)+off, 0);

<cej@gli.cas.cz> writes

| 
| hi,
| 
| unfortunately, tarfs is apparently not able to mount >2GB tar files.
| Do you think it could be fixed easily?
| 
| thanks,
| ++pac.