Messages in this thread | | | Date | Thu, 7 Jun 2007 12:43:42 -0400 | From | "Albert Cahalan" <> | Subject | Re: [RFC][PATCH] /proc/pid/maps doesn't match "ipcs -m" shmid |
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On 6/7/07, Badari Pulavarty <pbadari@us.ibm.com> wrote:
> BTW, I agree with Eric that its would be nice to use shmid as part > of name instead of forcing to be as inode number. It should be > possible for pmap to workout shmid from "key" or name. Isn't it ?
It is not at all nice.
1. it's incompatible ABI breakage 2. where will you put the key then, in the inode? :-)
Changing to "SYSVID%d" is no good either. Look, people are ***parsing*** this stuff in /proc. The /proc filesystem is not some random sandbox to be playing in.
Before you go messing with it, note that the device number also matters. (it's per-boot dynamic, but that's OK) That's how one knows that /SYSV00000000 is not just a regular file; sadly these didn't get a non-/ prefix. (and no you can't fix that now; it's way too late)
Next time you feel like breaking an ABI, mind putting "LET'S BREAK AN ABI!" in the subject of your email?
BTW, I suspect this kind of thing also breaks: a. fuser, lsof, and other resource usage display tools b. various obscure emulators (similar to valgrind) - 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/
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