[parisc] open(2) compat bug

Al Viro · torvalds · commit 25a3bc6bd1ca · 2012-12-03T11:13:09.000-08:00
In commit 9d73fc2 ("open*(2) compat fixes (s390, arm64)") I said: > > The usual rules for open()/openat()/open_by_handle_at() are > 1) native 32bit - don't force O_LARGEFILE in flags > 2) native 64bit - force O_LARGEFILE in flags > 3) compat on 64bit host - as for native 32bit > 4) native 32bit ABI for 64bit system (mips/n32, x86/x32) - as for native 64bit > > There are only two exceptions - s390 compat has open() forcing O_LARGEFILE and > arm64 compat has open_by_handle_at() doing the same thing. The same binaries > on native host (s390/31 and arm resp.) will *not* force O_LARGEFILE, so IMO > both are emulation bugs. Three exceptions, actually - parisc open() is another case like that. Native 32bit won't force O_LARGEFILE, the same binary on parisc64 will. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S
@@ -60,7 +60,7 @@
 	ENTRY_SAME(fork_wrapper)
 	ENTRY_SAME(read)
 	ENTRY_SAME(write)
-	ENTRY_SAME(open)		/* 5 */
+	ENTRY_COMP(open)		/* 5 */
 	ENTRY_SAME(close)
 	ENTRY_SAME(waitpid)
 	ENTRY_SAME(creat)
