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sparc64: Sign extend length arg to truncate syscalls when compat.

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The first thing sys_truncate() and sys_ftruncate() do is sign extend
the unsigned length arg to a signed type.

Thanks to Benjamin Herrenschmidt for the tip.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2009-07-27 18:10:28 -07:00
parent 14d87e6c39
commit 9a926d86b2
2 changed files with 4 additions and 2 deletions
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2
arch/sparc/kernel/sys32.S
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@@ -138,6 +138,8 @@ SIGN2(sys32_splice, sys_splice, %o0, %o1)
SIGN2(sys32_sync_file_range, compat_sync_file_range, %o0, %o5)
SIGN2(sys32_tee, sys_tee, %o0, %o1)
SIGN1(sys32_vmsplice, compat_sys_vmsplice, %o0)
SIGN1(sys32_truncate, sys_truncate, %o1)
SIGN1(sys32_ftruncate, sys_ftruncate, %o1)
.globl sys32_mmap2
sys32_mmap2: