9p: fix endian issues [attempt 3]
When the changes were done to the protocol last release, some endian
bugs crept in. This patch fixes those endian problems and has been
verified to run on 32/64 bit and x86/ppc architectures.
This version of the patch incorporates the correct annotations
for endian variables.
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/9p/protocol.c b/net/9p/protocol.c
index dcd7666..fc70147 100644
--- a/net/9p/protocol.c
+++ b/net/9p/protocol.c
@@ -29,6 +29,7 @@
#include <linux/errno.h>
#include <linux/uaccess.h>
#include <linux/sched.h>
+#include <linux/types.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
#include "protocol.h"
@@ -160,29 +161,32 @@
break;
case 'w':{
int16_t *val = va_arg(ap, int16_t *);
- if (pdu_read(pdu, val, sizeof(*val))) {
+ __le16 le_val;
+ if (pdu_read(pdu, &le_val, sizeof(le_val))) {
errcode = -EFAULT;
break;
}
- *val = cpu_to_le16(*val);
+ *val = le16_to_cpu(le_val);
}
break;
case 'd':{
int32_t *val = va_arg(ap, int32_t *);
- if (pdu_read(pdu, val, sizeof(*val))) {
+ __le32 le_val;
+ if (pdu_read(pdu, &le_val, sizeof(le_val))) {
errcode = -EFAULT;
break;
}
- *val = cpu_to_le32(*val);
+ *val = le32_to_cpu(le_val);
}
break;
case 'q':{
int64_t *val = va_arg(ap, int64_t *);
- if (pdu_read(pdu, val, sizeof(*val))) {
+ __le64 le_val;
+ if (pdu_read(pdu, &le_val, sizeof(le_val))) {
errcode = -EFAULT;
break;
}
- *val = cpu_to_le64(*val);
+ *val = le64_to_cpu(le_val);
}
break;
case 's':{
@@ -362,19 +366,19 @@
}
break;
case 'w':{
- int16_t val = va_arg(ap, int);
+ __le16 val = cpu_to_le16(va_arg(ap, int));
if (pdu_write(pdu, &val, sizeof(val)))
errcode = -EFAULT;
}
break;
case 'd':{
- int32_t val = va_arg(ap, int32_t);
+ __le32 val = cpu_to_le32(va_arg(ap, int32_t));
if (pdu_write(pdu, &val, sizeof(val)))
errcode = -EFAULT;
}
break;
case 'q':{
- int64_t val = va_arg(ap, int64_t);
+ __le64 val = cpu_to_le64(va_arg(ap, int64_t));
if (pdu_write(pdu, &val, sizeof(val)))
errcode = -EFAULT;
}