processes using AF_LOCAL sockets. This hack is going to be used with
Secure RPC to duplicate a feature of STREAMS which has no real counterpart
in sockets (with STREAMS/TLI, you can apparently use t_getinfo() to learn
UID of a local process on the other side of a transport endpoint).
What happens is this: the client sets up a sendmsg() call with ancillary
data using the SCM_CREDS socket-level control message type. It does not
need to fill in the structure. When the kernel notices the data,
unp_internalize() fills in the cmesgcred structure with the sending
process' credentials (UID, EUID, GID, and ancillary groups). This data
is later delivered to the receiving process. The receiver can then
perform the follwing tests:
- Did the client send ancillary data?
o Yes, proceed.
o No, refuse to authenticate the client.
- The the client send data of type SCM_CREDS?
o Yes, proceed.
o No, refuse to authenticate the client.
- Is the cmsgcred structure the right size?
o Yes, proceed.
o No, signal a possible error.
The receiver can now inspect the credential information and use it to
authenticate the client.
Fixed a bug in fxp_mdi_write - a hex number was missing a preceding 0x
and this was causing the routine to not wait for a PHY write to complete.
Added support for link0, link1, and link2 flags to toggle auto-
negotiation, 10/100, and half/full duplex:
link0 disable auto-negotiation
When set, these flags then have meaning:
-link1 10Mbps
link1 100Mbps
-link2 half duplex
link2 full duplex
...needs a manual page.
modern FreeBSD systems will syslog properly on older systems that
still name the logging socket "/dev/log". This includes pre-2.2
versions of FreeBSD as well as BSD/OS systems. If the connect to
"/var/run/log" fails, the function now tries to connect to
"/dev/log" as a fallback.
I noticed while editing these man pages.
Usage: .An Author_name
Example:
This manual page was written by
.An Mike Pritchard Aq mpp@FreeBSD.ORG .
Produces:
This manual page was written by Mike Pritchard <mpp@FreeBSD.ORG>.
".Rv -std atexit" will generate the following text:
The atexit() function returns the value 0 if successful; otherwise the
value -1 is returned and the global variable errno is set to indicate the
error.
available macro for enum, struct and union members. .Ft seems to
be the best available macro for enum, struct and union tags and
types).
Fixed missing void arg types.
Yep, you heard it, this book has survived since 1997 via the photocopier
underground. Well SCO decided it is now safe for us to see the 6th ed.
Kernel source. :-)
This is a really nice small (274 pages) book on UNIX architecture.
It "reads" like K&R, has good straightforward explantions and nice diagrams
of structures and things, w/o unnessiary bulk. It covers both BSD and sysV.
I wish this had been the textbook for my undergrad OS class rather
than Tannenbam.
years.
Not fixed: stale, misformatted copy of <dirent.h>. I will be cleaning
up the dirent.h and dir.h headers soon (ufs stuff needs to be separated
better), so don't change the man page yet.
