Messages in this thread | | | Date | Sun, 12 Dec 1999 01:29:12 +0100 | From | Manfred Spraul <> | Subject | 64-bit shm: abi problems |
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A few weeks ago, the shm segment size was increased from "int" to "size_t", but unfortunately this breaks user space compatibility on all 64-bit platforms:
* the length of shmid_ds has changed. It would be easy to fix that problem: we continue to use the current structure, and lie about segments longer than INT_MAX.
* the parameters for the kernel sysctl have changed (from "int" to "size_t"). I don't know if we can do that without breaking binary compatibility
I think we should undo the size_t changes, and merge them with the 32-bit uid patches from Chris. 32-bit uids need special wrapper functions in glibc, and thus we could solve both problems together. [btw, glibc also uses "int" instead of "size_t" in shmget(), but SUSv2 says "size_t".]
Any other ideas?
Manfred
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