"David S. Miller" [off-list ref] writes:
On Sat, 05 Jun 2004 23:47:22 +0200
Andreas Schwab [off-list ref] wrote:
quoted
quoted
Olaf's patch, it said:
- if (flags & ~(MSG_PEEK|MSG_DONTWAIT|MSG_TRUNC))
+ if (flags & ~(MSG_PEEK|MSG_DONTWAIT|MSG_TRUNC|MSG_CMSG_COMPAT))
Yes, and where is the problem?
If MSG_CMSG_COMPAT is "ZERO", which it will be if CONFIG_COMPAT is
not set, then "~0" is all bits, therefore if any bit (even the ones
we want to accept) is set we will return failure. The test ends
up amounting to:
if (flags & ~0)
which is true if any bit is set, that's not what we want.
Can you say DeMorgan?
quoted hunk
diff -Nru a/include/linux/socket.h b/include/linux/socket.h
--- a/include/linux/socket.h 2004-06-05 14:53:34 -07:00
+++ b/include/linux/socket.h 2004-06-05 14:53:34 -07:00
@@ -241,8 +241,10 @@
#if defined(CONFIG_COMPAT)
#define MSG_CMSG_COMPAT 0x80000000 /* This message needs 32 bit fixups */
+#define MSG_FLAGS_USER(X) ((X) & ~MSG_CMSG_COMPAT)
#else
#define MSG_CMSG_COMPAT 0 /* We never have 32 bit fixups */
+#define MSG_FLAGS_USER(X) (X)
#endif
diff -Nru a/net/appletalk/ddp.c b/net/appletalk/ddp.c
--- a/net/appletalk/ddp.c 2004-06-05 14:53:35 -07:00
+++ b/net/appletalk/ddp.c 2004-06-05 14:53:35 -07:00
@@ -1567,7 +1567,7 @@
struct atalk_route *rt;
int err;
- if (flags & ~MSG_DONTWAIT)
+ if (MSG_FLAGS_USER(flags) & ~MSG_DONTWAIT)
return -EINVAL;
if (len > DDP_MAXSZ)
This is exactly equivalent to Olaf's version.
Andreas.
--
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux AG, Maxfeldstraße 5, 90409 Nürnberg, Germany
Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
On Sat, Jun 05, David S. Miller wrote:
On Sun, 06 Jun 2004 00:05:58 +0200
Andreas Schwab [off-list ref] wrote:
quoted
Can you say DeMorgan?
Sorry, thought I had put enough caffeine in my system.
Aparently not :)
Lets agree on this version.
diff -p -purN linux-2.6.7-rc2-bk5.orig/net/appletalk/ddp.c linux-2.6.7-rc2-bk5/net/appletalk/ddp.c
--- linux-2.6.7-rc2-bk5.orig/net/appletalk/ddp.c 2004-06-05 09:34:47.000000000 +0200
+++ linux-2.6.7-rc2-bk5/net/appletalk/ddp.c 2004-06-06 00:21:48.000000000 +0200
@@ -1567,7 +1567,7 @@ static int atalk_sendmsg(struct kiocb *i
struct atalk_route *rt;
int err;
- if (flags & ~MSG_DONTWAIT)
+ if (flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT))
return -EINVAL;
if (len > DDP_MAXSZ)
diff -p -purN linux-2.6.7-rc2-bk5.orig/net/ax25/af_ax25.c linux-2.6.7-rc2-bk5/net/ax25/af_ax25.c
--- linux-2.6.7-rc2-bk5.orig/net/ax25/af_ax25.c 2004-06-05 09:34:47.000000000 +0200
+++ linux-2.6.7-rc2-bk5/net/ax25/af_ax25.c 2004-06-06 00:23:18.000000000 +0200
@@ -1413,9 +1413,8 @@ static int ax25_sendmsg(struct kiocb *io
size_t size;
int lv, err, addr_len = msg->msg_namelen;
- if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR)) {
+ if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
return -EINVAL;
- }
lock_sock(sk);
ax25 = ax25_sk(sk);diff -p -purN linux-2.6.7-rc2-bk5.orig/net/decnet/af_decnet.c linux-2.6.7-rc2-bk5/net/decnet/af_decnet.c
--- linux-2.6.7-rc2-bk5.orig/net/decnet/af_decnet.c 2004-06-05 09:34:47.000000000 +0200
+++ linux-2.6.7-rc2-bk5/net/decnet/af_decnet.c 2004-06-06 00:23:01.000000000 +0200
@@ -1905,7 +1905,7 @@ static int dn_sendmsg(struct kiocb *iocb
unsigned char fctype;
long timeo = sock_sndtimeo(sk, flags & MSG_DONTWAIT);
- if (flags & ~(MSG_TRYHARD|MSG_OOB|MSG_DONTWAIT|MSG_EOR|MSG_NOSIGNAL|MSG_MORE))
+ if (flags & ~(MSG_TRYHARD|MSG_OOB|MSG_DONTWAIT|MSG_EOR|MSG_NOSIGNAL|MSG_MORE|MSG_CMSG_COMPAT))
return -EOPNOTSUPP;
if (addr_len && (addr_len != sizeof(struct sockaddr_dn)))
diff -p -purN linux-2.6.7-rc2-bk5.orig/net/econet/af_econet.c linux-2.6.7-rc2-bk5/net/econet/af_econet.c
--- linux-2.6.7-rc2-bk5.orig/net/econet/af_econet.c 2004-06-05 09:34:47.000000000 +0200
+++ linux-2.6.7-rc2-bk5/net/econet/af_econet.c 2004-06-06 00:24:19.000000000 +0200
@@ -274,8 +274,8 @@ static int econet_sendmsg(struct kiocb *
* Check the flags.
*/
- if (msg->msg_flags&~MSG_DONTWAIT)
- return(-EINVAL);
+ if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT))
+ return -EINVAL;
/*
* Get and verify the address.
diff -p -purN linux-2.6.7-rc2-bk5.orig/net/ipx/af_ipx.c linux-2.6.7-rc2-bk5/net/ipx/af_ipx.c
--- linux-2.6.7-rc2-bk5.orig/net/ipx/af_ipx.c 2004-06-05 09:34:48.000000000 +0200
+++ linux-2.6.7-rc2-bk5/net/ipx/af_ipx.c 2004-06-06 00:24:54.000000000 +0200
@@ -1695,7 +1695,7 @@ static int ipx_sendmsg(struct kiocb *ioc
/* Socket gets bound below anyway */
/* if (sk->sk_zapped)
return -EIO; */ /* Socket not bound */
- if (flags & ~MSG_DONTWAIT)
+ if (flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT))
goto out;
/* Max possible packet size limited by 16 bit pktsize in header */
diff -p -purN linux-2.6.7-rc2-bk5.orig/net/irda/af_irda.c linux-2.6.7-rc2-bk5/net/irda/af_irda.c
--- linux-2.6.7-rc2-bk5.orig/net/irda/af_irda.c 2004-06-05 09:34:48.000000000 +0200
+++ linux-2.6.7-rc2-bk5/net/irda/af_irda.c 2004-06-06 00:27:55.000000000 +0200
@@ -1269,7 +1269,7 @@ static int irda_sendmsg(struct kiocb *io
IRDA_DEBUG(4, "%s(), len=%d\n", __FUNCTION__, len);
/* Note : socket.c set MSG_EOR on SEQPACKET sockets */
- if (msg->msg_flags & ~(MSG_DONTWAIT | MSG_EOR))
+ if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
return -EINVAL;
if (sk->sk_shutdown & SEND_SHUTDOWN) {@@ -1521,7 +1521,7 @@ static int irda_sendmsg_dgram(struct kio
IRDA_DEBUG(4, "%s(), len=%d\n", __FUNCTION__, len);
- if (msg->msg_flags & ~MSG_DONTWAIT)
+ if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT))
return -EINVAL;
if (sk->sk_shutdown & SEND_SHUTDOWN) {@@ -1593,7 +1593,7 @@ static int irda_sendmsg_ultra(struct kio
IRDA_DEBUG(4, "%s(), len=%d\n", __FUNCTION__, len);
- if (msg->msg_flags & ~MSG_DONTWAIT)
+ if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT))
return -EINVAL;
if (sk->sk_shutdown & SEND_SHUTDOWN) {diff -p -purN linux-2.6.7-rc2-bk5.orig/net/key/af_key.c linux-2.6.7-rc2-bk5/net/key/af_key.c
--- linux-2.6.7-rc2-bk5.orig/net/key/af_key.c 2004-06-05 09:31:46.000000000 +0200
+++ linux-2.6.7-rc2-bk5/net/key/af_key.c 2004-06-06 00:28:49.000000000 +0200
@@ -2726,7 +2726,7 @@ static int pfkey_recvmsg(struct kiocb *k
int copied, err;
err = -EINVAL;
- if (flags & ~(MSG_PEEK|MSG_DONTWAIT|MSG_TRUNC))
+ if (flags & ~(MSG_PEEK|MSG_DONTWAIT|MSG_TRUNC|MSG_CMSG_COMPAT))
goto out;
msg->msg_namelen = 0;
diff -p -purN linux-2.6.7-rc2-bk5.orig/net/netrom/af_netrom.c linux-2.6.7-rc2-bk5/net/netrom/af_netrom.c
--- linux-2.6.7-rc2-bk5.orig/net/netrom/af_netrom.c 2004-06-05 09:34:48.000000000 +0200
+++ linux-2.6.7-rc2-bk5/net/netrom/af_netrom.c 2004-06-06 00:29:00.000000000 +0200
@@ -1021,7 +1021,7 @@ static int nr_sendmsg(struct kiocb *iocb
unsigned char *asmptr;
int size;
- if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR))
+ if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
return -EINVAL;
lock_sock(sk);
diff -p -purN linux-2.6.7-rc2-bk5.orig/net/packet/af_packet.c linux-2.6.7-rc2-bk5/net/packet/af_packet.c
--- linux-2.6.7-rc2-bk5.orig/net/packet/af_packet.c 2004-06-05 09:34:48.000000000 +0200
+++ linux-2.6.7-rc2-bk5/net/packet/af_packet.c 2004-06-05 22:32:16.000000000 +0200
@@ -1037,7 +1037,7 @@ static int packet_recvmsg(struct kiocb *
int copied, err;
err = -EINVAL;
- if (flags & ~(MSG_PEEK|MSG_DONTWAIT|MSG_TRUNC))
+ if (flags & ~(MSG_PEEK|MSG_DONTWAIT|MSG_TRUNC|MSG_CMSG_COMPAT))
goto out;
#if 0
diff -p -purN linux-2.6.7-rc2-bk5.orig/net/rose/af_rose.c linux-2.6.7-rc2-bk5/net/rose/af_rose.c
--- linux-2.6.7-rc2-bk5.orig/net/rose/af_rose.c 2004-06-05 09:34:48.000000000 +0200
+++ linux-2.6.7-rc2-bk5/net/rose/af_rose.c 2004-06-06 00:29:29.000000000 +0200
@@ -1021,7 +1021,7 @@ static int rose_sendmsg(struct kiocb *io
unsigned char *asmptr;
int n, size, qbit = 0;
- if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR))
+ if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
return -EINVAL;
if (sk->sk_zapped)
diff -p -purN linux-2.6.7-rc2-bk5.orig/net/wanrouter/af_wanpipe.c linux-2.6.7-rc2-bk5/net/wanrouter/af_wanpipe.c
--- linux-2.6.7-rc2-bk5.orig/net/wanrouter/af_wanpipe.c 2004-06-05 09:34:48.000000000 +0200
+++ linux-2.6.7-rc2-bk5/net/wanrouter/af_wanpipe.c 2004-06-06 00:29:51.000000000 +0200
@@ -552,7 +552,7 @@ static int wanpipe_sendmsg(struct kiocb
if (sk->sk_state != WANSOCK_CONNECTED)
return -ENOTCONN;
- if (msg->msg_flags&~MSG_DONTWAIT)
+ if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT))
return(-EINVAL);
/* it was <=, now one can send
diff -p -purN linux-2.6.7-rc2-bk5.orig/net/x25/af_x25.c linux-2.6.7-rc2-bk5/net/x25/af_x25.c
--- linux-2.6.7-rc2-bk5.orig/net/x25/af_x25.c 2004-06-05 09:34:48.000000000 +0200
+++ linux-2.6.7-rc2-bk5/net/x25/af_x25.c 2004-06-06 00:30:20.000000000 +0200
@@ -922,7 +922,7 @@ static int x25_sendmsg(struct kiocb *ioc
size_t size;
int qbit = 0, rc = -EINVAL;
- if (msg->msg_flags & ~(MSG_DONTWAIT | MSG_OOB | MSG_EOR))
+ if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_OOB|MSG_EOR|MSG_CMSG_COMPAT))
goto out;
/* we currently don't support segmented records at the user interface */
--
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