Messages in this thread | | | Date | Thu, 13 Oct 2005 19:49:34 -0400 | From | Alexander Viro <> | Subject | BLKSECTGET userland API breakage (2.4 and 2.6 incompatible) |
| |
[that had started as "BLKSECTGET 32bit compat is broken"]
Situation:
all 2.4: BLKSECTGET takes long * and is supported by several block drivers bio-14-pre9: Takes BLKSECTGET to drivers/block/blkpg.c, defining it for all block drivers *AND* making it take unsigned short * 2.5.1-pre2: bio merge all 2.[56] kernels since then: BLKSECTGET takes unsigned short * 32bit compat: unchanged since 2.4 and thus broken on 2.[56] applications: we have seen ones using 2.6 ABI and getting buggered in 32bit compat. Most likely there are some using 2.4 ABI...
IMO the least painful variant is to switch 2.6 compat code to match 2.6 native (i.e. use COMPATIBLE_IOCTL()), leave 2.4 as-is and live with the fact of userland ABI change between 2.4 and 2.6...
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |