src/lib/libnetgraph/msg.c, branch release/14.4.0

Remove $FreeBSD$: one-line .c pattern

2023-08-16T17:54:42Z

Remove /^[\s*]*__FBSDID$"\$FreeBSD\$"$;?\s*\n/

Atomically update the global gMsgId in libnetgraph.

2019-05-10T16:43:47Z

Otherwise concurrently running threads may inadvertently use the same token for different messages. Preserve the behaviour of disallowing negative message tokens, but allow a message token value of zero since this simplifies the code a bit and tokens are documented to be non-negative. PR: 234442 Reported and tested by: eugen MFC after: 1 month Sponsored by: The FreeBSD Foundation

Fix for quite a special case when userland emulates a netgraph node, and

2013-03-11T13:05:11Z

userland can reply to a message with NGM_HASREPLY bit set. In this case we should not wait for a response to a responce. PR: 176771 Submitted by: Keith Reynolds

Replace select() by poll() to avoid problems with big

2007-05-14T14:18:41Z

descriptor number. Approved by: glebius (mentor)

Include sys/socket.h to know about sa_family_t.

2006-10-17T16:56:29Z

In the splnet(9) times netgraph(4) was synchronous and if a message

2006-01-12T19:14:40Z

had been replied, the reply was always delivered to the originator synchronously. With introduction of netgraph item callbacks and a wait channel with mutex in ng_socket(4), we have fixed the problem with ngctl(8) returning earlier than the command has been proceeded by target node. But still ngctl(8) can return prior to the reply has arrived to its node. To fix this: - Introduce a new flag for netgraph(4) messages - NGM_HASREPLY. This flag is or'ed with message like NGM_READONLY. - In netgraph userland library if we have sent a message with NGM_HASREPLY flag, then select(2) until reply comes. - Mark appropriate generic commands with NGM_HASREPLY flag, gathering them into one enum {}. Bump generic cookie.

Make this compile with GCC4 by fixing a few signedness related warnings.

2005-04-26T14:25:11Z

Reviewed by: md5(1)

When we have converted an ASCII message to binary, set its version in

2005-02-04T21:36:10Z

the header. Otherwise we will send a message with zero version. MFC after: 3 days

- Added three new interfaces, NgAllocRecvMsg(), NgAllocRecvAsciiMsg(),

2004-01-27T20:25:14Z

and NgAllocRecvData(), that dynamically allocate buffer for a binary message, an ascii message, and a data packet, respectively. The size of the allocated buffer is equal to the socket's receive buffer size to guarantee that a message or a data packet is not truncated. - Get rid of the static size buffer in NgSendAsciiMsg(). OK'ed by: archie, julian

Fixed memory leak in NgSendAsciiMsg().

2004-01-27T18:38:22Z