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ipc/compat_sys_msgrcv: change msgtyp type from long to compat_long_t

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Change the type of compat_sys_msgrcv's msgtyp parameter from long
to compat_long_t, since compat user space passes only a 32 bit signed
value.
Let the compat wrapper do proper sign extension to 64 bit of this
parameter.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
This commit is contained in:
Heiko Carstens
2014-03-04 12:39:03 +01:00
parent c2e7c3d0ef
commit 291fdb0bce
2 changed files with 3 additions and 3 deletions
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4
ipc/compat.c
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@@ -430,9 +430,9 @@ COMPAT_SYSCALL_DEFINE4(msgsnd, int, msqid, compat_uptr_t, msgp,
}
COMPAT_SYSCALL_DEFINE5(msgrcv, int, msqid, compat_uptr_t, msgp,
compat_ssize_t, msgsz, long, msgtyp, int, msgflg)
compat_ssize_t, msgsz, compat_long_t, msgtyp, int, msgflg)
{
return do_msgrcv(msqid, compat_ptr(msgp), (ssize_t)msgsz, msgtyp,
return do_msgrcv(msqid, compat_ptr(msgp), (ssize_t)msgsz, (long)msgtyp,
msgflg, compat_do_msg_fill);
}