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ipc: unbreak 32-bit shmctl/semctl/msgctl
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31a985f "ipc: use __ARCH_WANT_IPC_PARSE_VERSION in ipc/util.h" would
choose the implementation of ipc_parse_version() based on a symbol
defined in <asm/unistd.h>.

But it failed to also include this header and thus broke
IPC_64-passing 32-bit userspace because the flag wasn't masked out
properly anymore and the command not understood.

Include <linux/unistd.h> to give the architecture a chance to ask for
the no-no-op ipc_parse_version().

Signed-off-by: Johannes Weiner <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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@hnaz @torvalds
hnaz authored and torvalds committed Jun 21, 2009
1 parent c277331 commit 232086b
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1 change: 1 addition & 0 deletions ipc/util.h
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@
#ifndef _IPC_UTIL_H
#define _IPC_UTIL_H

#include <linux/unistd.h>
#include <linux/err.h>

#define SEQ_MULTIPLIER (IPCMNI)
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