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authorRoland McGrath <roland@gnu.org>2005-12-29 10:51:20 +0000
committerRoland McGrath <roland@gnu.org>2005-12-29 10:51:20 +0000
commit1d02865b2db8a39c8a67145826456a37e8831d5d (patch)
treeb1bf0bfa0ca796d5f1cb49183065c549b410bd89 /sysdeps/mach/hurd/ioctl.c
parent8ad684db49bf9dc109c409cac38f744e3fa260c7 (diff)
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* sysdeps/mach/hurd/errno.c: New file.
* sysdeps/mach/hurd/ioctl.c (__ioctl): Use a union to avoid a cast.
Diffstat (limited to 'sysdeps/mach/hurd/ioctl.c')
-rw-r--r--sysdeps/mach/hurd/ioctl.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/sysdeps/mach/hurd/ioctl.c b/sysdeps/mach/hurd/ioctl.c
index 6a540241a4..bcc78bc84e 100644
--- a/sysdeps/mach/hurd/ioctl.c
+++ b/sysdeps/mach/hurd/ioctl.c
@@ -58,7 +58,16 @@ __ioctl (int fd, unsigned long int request, ...)
struct
{
#ifdef MACH_MSG_TYPE_BIT
- mig_reply_header_t header;
+ union
+ {
+ mig_reply_header_t header;
+ struct
+ {
+ mach_msg_header_t Head;
+ int RetCodeType;
+ kern_return_t RetCode;
+ } header_typecheck;
+ };
char data[3 * sizeof (mach_msg_type_t) +
msg_align (_IOT_COUNT0 (type) * typesize (_IOT_TYPE0 (type))) +
msg_align (_IOT_COUNT1 (type) * typesize (_IOT_TYPE1 (type))) +
@@ -192,7 +201,7 @@ __ioctl (int fd, unsigned long int request, ...)
return MIG_TYPE_ERROR;
#ifdef MACH_MSG_TYPE_BIT
- if (*(int *) &msg.header.RetCodeType !=
+ if (msg.header_typecheck.RetCodeType !=
((union { mach_msg_type_t t; int i; })
{ t: io2mach_type (1, _IOTS (msg.header.RetCode)) }).i)
return MIG_TYPE_ERROR;