27852ebe53
This new implementation of the UDS service is built on top of the libsockevent library. It thereby inherits all the advantages that libsockevent brings. However, the fundamental restructuring required for that change also paved the way for resolution of a number of other important open issues with the old UDS code. Most importantly, the rewrite brings the behavior of the service much closer to POSIX compliance and NetBSD compatibility. These are the most important changes: - due to the use of libsockevent, UDS now supports multiple suspending calls per socket and a large number of standard socket flags and options; - socket address matching is now based on <device,inode> lookups instead of canonized path names, and socket addresses are no longer altered either due to canonization or at connect time; - the socket state machine is now well defined, most importantly resolving the erroneous reset-on-EOF semantics of the old UDS, but also allowing socket reuse; - sockets are now connected before being accepted instead of being held in connecting state, unless the LOCAL_CONNWAIT option is set on either the connecting or the listening socket; - connect(2) on datagram sockets is now supported (needed by syslog), and proper datagram socket disconnect notification is provided; - the receive queue now supports segmentation, associating ancillary data (in-flight file descriptors and credentials) with each segment instead of being kept fully separately; this is a POSIX requirement (and needed by tmux); - as part of the segmentation support, the receive queue can now hold as many packets as can fit, instead of one; - in addition to the flags supported by libsockevent, the MSG_PEEK, MSG_WAITALL, MSG_CMSG_CLOEXEC, MSG_TRUNC, and MSG_CTRUNC send and receive flags are now supported; - the SO_PASSCRED and SO_PEERCRED socket options are replaced by LOCAL_CREDS and LOCAL_PEEREID respectively, now following NetBSD semantics and allowing use of NetBSD libc's getpeereid(3); - memory usage is reduced by about 250 KB due to centralized in-flight file descriptor tracking, with a limit of OPEN_MAX total rather than of OPEN_MAX per socket; - memory usage is reduced by another ~50 KB due to removal of state redundancy, despite the fact that socket path names may now be up to 253 bytes rather than the previous 104 bytes; - compared to the old UDS, there is now very little direct indexing on the static array of sockets, thus allowing dynamic allocation of sockets more easily in the future; - the UDS service now has RMIB support for the net.local sysctl tree, implementing preliminary support for NetBSD netstat(1). Change-Id: I4a9b6fe4aaeef0edf2547eee894e6c14403fcb32
479 lines
12 KiB
Bash
Executable File
479 lines
12 KiB
Bash
Executable File
#!/bin/sh
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#
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# MAKEDEV 3.3 - Make special devices. Author: Kees J. Bot
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# 3.4 - Rewritten to allow mtree line to be printed, Lionel A. Sambuc
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# also use getopt for argument parsing
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umask 077
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MTREE=false
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STD=false
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RAMDISK=false
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ECHO=
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EXIT=0
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# console => lp tty log
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# boot => kmem mem null ram zero
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RAMDISK_DEVICES="
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boot
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console
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input
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c0d0 c0d0p0 c0d0p0s0 c0d1 c0d1p0 c0d1p0s0
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c0d2 c0d2p0 c0d2p0s0 c0d3 c0d3p0 c0d3p0s0
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c0d4 c0d4p0 c0d4p0s0 c0d5 c0d5p0 c0d5p0s0
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c0d6 c0d6p0 c0d6p0s0 c0d7 c0d7p0 c0d7p0s0
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c1d0 c1d0p0 c1d0p0s0 c1d1 c1d1p0 c1d1p0s0
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c1d2 c1d2p0 c1d2p0s0 c1d3 c1d3p0 c1d3p0s0
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c1d4 c1d4p0 c1d4p0s0 c1d5 c1d5p0 c1d5p0s0
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c1d6 c1d6p0 c1d6p0s0 c1d7 c1d7p0 c1d7p0s0
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fd0 fd1 fd0p0 fd1p0
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pci
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ttyc1 ttyc2 ttyc3 tty00 tty01 tty02 tty03
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"
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#eth => ip tcp udp
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STD_DEVICES="
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${RAMDISK_DEVICES}
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bmp085b1s77 bmp085b2s77 bmp085b3s77
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eepromb1s50 eepromb1s51 eepromb1s52 eepromb1s53
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eepromb1s54 eepromb1s55 eepromb1s56 eepromb1s57
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eepromb2s50 eepromb2s51 eepromb2s52 eepromb2s53
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eepromb2s54 eepromb2s55 eepromb2s56 eepromb2s57
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eepromb3s50 eepromb3s51 eepromb3s52 eepromb3s53
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eepromb3s54 eepromb3s55 eepromb3s56 eepromb3s57
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eth fb0 fbd filter hello
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i2c-1 i2c-2 i2c-3
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klog ptmx random
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sht21b1s40 sht21b2s40 sht21b3s40
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tsl2550b1s39 tsl2550b2s39 tsl2550b3s39
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ttyp0 ttyp1 ttyp2 ttyp3 ttyp4 ttyp5 ttyp6 ttyp7 ttyp8 ttyp9
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ttypa ttypb ttypc ttypd ttype ttypf
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ttyq0 ttyq1 ttyq2 ttyq3 ttyq4 ttyq5 ttyq6 ttyq7 ttyq8 ttyq9
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ttyqa ttyqb ttyqc ttyqd ttyqe ttyqf
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vnd0 vnd0p0 vnd0p0s0 vnd1 vnd1p0 vnd1p0s0
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vnd2 vnd3 vnd4 vnd5 vnd6 vnd7
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"
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#makedev ${dev} $type ${major} ${minor} ${uname} ${gname} ${permissions} [link_target]
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#When called for a link, major and minor are ignored
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makedev()
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{
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# Check that all the arguments are there, we trust the caller to put
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# values which make sens.
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[ $# -eq 7 ] || [ $# -eq 8 ] || return 1;
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local _dev=$1
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local __type=$2
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local _major=$3
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local _minor=$4
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local _uname=$5
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local _gname=$6
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local _mode=$7
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case ${__type} in
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b)_type=block;;
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c) _type=char;;
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l) _type=link; _target=$8;;
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*) return 2;;
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esac
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if [ ${MTREE} = "yes" ]
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then
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if [ ${_type} = "link" ]
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then
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echo ./dev/${_dev} type=${_type} \
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uname=${_uname} gname=${_gname} mode=${_mode} \
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link=${_target}
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else
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echo ./dev/${_dev} type=${_type} \
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uname=${_uname} gname=${_gname} mode=${_mode} \
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device=native,${_major},${_minor}
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fi
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else
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if [ ${_type} = "link" ]
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then
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${ECHO} ln -f ${_target} ${_dev}
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else
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${ECHO} mknod ${_dev} ${__type} ${_major} ${_minor}
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${ECHO} chmod ${_mode} ${_dev}
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${ECHO} chown ${_uname}:${_gname} ${_dev}
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fi
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fi
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}
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# no_return usage()
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usage()
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{
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cat >&2 <<EOF
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Usage: $0 [-n|-m] [-s|-r] key ...
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-n: print the commands instead of executing them
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-m: print mtree(8) line
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-s: standard set of devices
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-r: reduced for ramdisk set of devices
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Where key is one of the following:
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ram mem kmem null boot zero # One of these makes all these memory devices
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fb0 # Make /dev/fb0
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i2c-1 i2c-2 i2c-3 # Make /dev/i2c-[1-3]
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tsl2550b{1,3}s39 # TSL2550 Ambient Light Sensors
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sht21b{1,3}s40 # SHT21 Relative Humidity and Temperature Sensors
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bmp085b{1,3}s77 # BMP085 Pressure and Temperature Sensors
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fd0 fd1 ... # Floppy devices for drive 0, 1, ...
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fd0p0 fd1p0 ... # Make floppy partitions fd0p[0-3], fd1p[0-3], ...
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c0d0 c0d1 ... # Make disks c0d0, c0d1, ...
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c0d0p0 c0d1p0 ... # Make partitions c0d0p[0-3], c0d1p[0-3], ...
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c0d0p0s0 c0d1p0s0 ... # Subparts c0d0p[0-3]s[0-3], c0d1p[0-3]s[0-3], ...
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c1d0(p0)(s0) # Likewise for controller 1
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c0t0 c0t1 c1t0 ... # Make tape devices c0t0, c0t0n, c0t1, ...
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console lp tty log # One of these makes all four
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ttyc1 ... ttyc7 # Virtual consoles
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tty00 ... tty03 # Make serial lines
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ttyp0 ... ttyq0 ... # Make tty, pty pairs
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eth ip tcp udp # One of these makes some TCP/IP devices
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audio mixer # Make audio devices
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klog # Make /dev/klog
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ptmx # Make /dev/ptmx
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random # Make /dev/random, /dev/urandom
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filter # Make /dev/filter
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fbd # Make /dev/fbd
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hello # Make /dev/hello
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video # Make /dev/video
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pci # Make /dev/pci
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vnd0 vnd0p0 vnd0p0s0 .. # Make vnode disks /dev/vnd[0-7] and (sub)partitions
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input # Make /dev/kbdmux, /dev/kbd[0-3], idem /dev/mouse~
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EOF
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exit 1
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}
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# Parse options
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while getopts "nmrs" arg
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do
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case "$arg" in
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n)
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ECHO=echo
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;;
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m)
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MTREE=yes
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;;
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r)
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RAMDISK=yes
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;;
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s)
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STD=yes
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;;
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h|\?)
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usage
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;;
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esac
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done
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if [ ${STD} = "yes" ]
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then
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DEVICES=${STD_DEVICES}
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elif [ ${RAMDISK} = "yes" ]
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then
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DEVICES=${RAMDISK_DEVICES}
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else
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while [ $OPTIND -gt 1 ]
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do
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shift
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OPTIND=$((${OPTIND} - 1))
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done
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while [ ! -z "$1" ]
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do
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DEVICES="${DEVICES} $1"
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shift
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done
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fi
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for dev in ${DEVICES}
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do
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# Reset the defaults
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uname=root
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gname=wheel
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permissions=600
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case ${dev} in
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c0*) major=3 ;;
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c1*) major=8 ;;
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c2*) major=10 ;;
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c3*) major=12 ;;
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vnd*) # Whole vnode disk devices.
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disk=`expr ${dev} : '...\\(.\\)'`
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major=`expr ${disk} + 56`
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;;
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esac
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# The following is lexicographicaly ordered
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case ${dev} in
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audio|mixer)
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# Audio devices.
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makedev audio c 13 0 ${uname} ${gname} 666
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makedev mixer c 13 1 ${uname} ${gname} 666
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;;
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bmp085b[1-3]s77)
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# Weather Cape: temperature & pressure sensor
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bus=`expr ${dev} : 'bmp085b\\(.*\\)s77'` #bus number
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major=`expr ${bus} + 52`
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makedev bmp085b${bus}s77 c ${major} 0 ${uname} ${gname} 444
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;;
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c[0-3]d[0-7])
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# Whole disk devices.
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disk=`expr ${dev} : '...\\(.\\)'`
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minor=`expr ${disk} '*' 5`
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makedev ${dev} b ${major} ${minor} ${uname} ${gname} ${permissions}
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;;
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c[0-3]d[0-7]p[0-3])
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# Disk primary partitions.
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prefix=`expr ${dev} : '\\(.*\\).'`
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disk=`expr ${dev} : '...\\(.\\)'`
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for p in 0 1 2 3
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do
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minor=`expr ${disk} '*' 5 + 1 + ${p}`
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makedev ${prefix}${p} b ${major} ${minor} \
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${uname} ${gname} ${permissions}
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done
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;;
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c[0-3]d[0-7]p[0-3]s[0-3])
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# Disk subpartition.
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prefix=`expr ${dev} : '\\(.*\\)...'`
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disk=`expr ${dev} : '...\\(.\\)'`
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for p in 0 1 2 3
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do
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for s in 0 1 2 3
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do
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minor=`expr 128 + ${disk} '*' 16 + ${p} '*' 4 + ${s}`
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makedev ${prefix}${p}s${s} b ${major} ${minor} \
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${uname} ${gname} ${permissions}
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done
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done
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;;
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c[0-3]t[0-7]|c[0-3]t[0-7]n)
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# Tape devices.
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prefix=`expr ${dev} : '\\(....\\)'`
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tape=`expr ${dev} : '...\\(.\\)'`
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minor=`expr 64 + ${tape} '*' 2`
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makedev ${prefix}n c ${major} ${minor} ${uname} ${gname} 660
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makedev ${prefix} c ${major} `expr ${minor} + 1` ${uname} ${gname} 660
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;;
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console|lp|tty|log|video)
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# Console, line printer, anonymous tty, diagnostics device, video.
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makedev console c 4 0 ${uname} tty ${permissions}
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makedev tty c 5 0 ${uname} ${gname} 666
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makedev lp c 6 0 daemon daemon 200
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makedev log c 4 15 ${uname} ${gname} 222
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makedev video c 4 125 ${uname} ${gname} ${permissions}
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;;
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eepromb[1-3]s5[0-7])
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# cat24c256 driver
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bus=`expr ${dev} : 'eepromb\\(.*\\)s'`
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# configurable part of slave addr
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slave_low=`expr ${dev} : 'eepromb.s5\\(.*\\)'`
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major=`expr ${bus} '*' 8 + ${slave_low} + 17`
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makedev eepromb${bus}s5${slave_low} b ${major} 0 ${uname} ${gname} ${permissions}
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;;
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eth|ip|tcp|udp|eth0|ip0|tcp0|udp0)
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# TCP/IP devices.
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makedev ipstat c 7 0 ${uname} ${gname} 666
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makedev eth0 c 7 1 ${uname} ${gname} ${permissions}
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makedev ip0 c 7 2 ${uname} ${gname} ${permissions}
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makedev tcp0 c 7 3 ${uname} ${gname} 666
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makedev udp0 c 7 4 ${uname} ${gname} 666
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# Default interface
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makedev eth c 7 1 ${uname} ${gname} ${permissions}
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makedev ip c 7 2 ${uname} ${gname} ${permissions}
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makedev tcp c 7 3 ${uname} ${gname} 666
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makedev udp c 7 4 ${uname} ${gname} 666
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;;
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fb0)
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# Framebuffer driver
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makedev ${dev} c 19 0 ${uname} ${gname} 644
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;;
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fbd)
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# Faulty block device driver
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makedev ${dev} b 14 0 ${uname} ${gname} ${permissions}
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;;
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fd[0-3])
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# Floppy disk drive N has minor N.
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minor=`expr ${dev} : '..\\(.\\)'`
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makedev ${dev} b 2 ${minor} ${uname} ${gname} 666
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;;
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fd[0-3]p[0-3])
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# Floppy disk partitions.
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prefix=`expr ${dev} : '\\(.*\\).'`
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drive=`expr ${dev} : '..\\(.\\)'`
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for p in 0 1 2 3
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do
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minor=`expr 112 + ${drive} + ${p} '*' 4`
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makedev ${prefix}${p} b 2 ${minor} \
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${uname} ${gname} 666
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done
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;;
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filter)
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# Filter driver
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makedev ${dev} b 11 0 ${uname} ${gname} ${permissions}
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;;
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hello)
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# Hello driver
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makedev ${dev} c 17 0 ${uname} ${gname} 644
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;;
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i2c-[1-3])
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# i2c driver
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bus=`expr ${dev} : '....\\(.*\\)'` # bus number
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# least significant digit of major
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major_low=`expr ${dev} : '....\\(.*\\)'`
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major_low=`expr ${major_low} - 1`
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makedev "i2c-${bus}" c 2${major_low} 0 ${uname} ${gname} ${permissions}
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;;
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input)
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# Input server
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makedev kbdmux c 64 0 ${uname} ${gname} ${permissions}
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makedev mousemux c 64 64 ${uname} ${gname} ${permissions}
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for n in 0 1 2 3
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do
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minor_keyboard=`expr ${n} + 1`
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minor_mouse=`expr ${n} + 65`
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makedev kbd${n} c 64 ${minor_keyboard} ${uname} ${gname} ${permissions}
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makedev mouse${n} c 64 ${minor_mouse} ${uname} ${gname} ${permissions}
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done
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;;
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klog)
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# Logging device.
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makedev ${dev} c 15 0 ${uname} ${gname} ${permissions}
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;;
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pc[0-3]|at[0-3]|qd[0-3]|ps[0-3]|pat[0-3]|qh[0-3]|PS[0-3])
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# Obsolete density locked floppy disk drive n.
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drive=`expr ${dev} : '.*\\(.\\)'`
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minor=${drive}
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for prefix in pc at qd ps pat qh PS
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do
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makedev ${prefix}${drive} b 2 ${minor} \
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${uname} ${gname} 666
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minor=`expr ${minor} + 4`
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done
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;;
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pci)
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# PCI server, manages PCI buses
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makedev pci c 134 0 ${uname} ${gname} ${permissions}
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;;
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ptmx)
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# Unix98 pseudoterminal master
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makedev ptmx c 9 0 ${uname} tty 666
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;;
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ram|mem|kmem|null|boot|zero|imgrd)
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# Memory devices.
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makedev ram b 1 0 ${uname} kmem ${permissions}
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makedev mem c 1 1 ${uname} kmem 640
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makedev kmem c 1 2 ${uname} kmem 640
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makedev null c 1 3 ${uname} kmem 666
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makedev boot b 1 4 ${uname} kmem ${permissions}
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makedev zero c 1 5 ${uname} kmem 644
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makedev imgrd b 1 6 ${uname} kmem ${permissions}
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for n in 0 1 2 3 4 5
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do
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minor=`expr ${n} + 7`
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makedev ram${n} b 1 ${minor} ${uname} kmem ${permissions}
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done
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;;
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random|urandom)
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# Random data generator.
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makedev random c 16 0 ${uname} ${gname} 644
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makedev urandom c 16 0 ${uname} ${gname} 644
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;;
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sht21b[1-3]s40)
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# Weather Cape: relative humidity & temperature sensor
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bus=`expr ${dev} : 'sht21b\\(.*\\)s40'`
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major=`expr ${bus} + 49`
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makedev sht21b${bus}s40 c ${major} 0 ${uname} ${gname} 444
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;;
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tsl2550b[1-3]s39)
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# Weather Cape: ambient light sensor
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bus=`expr ${dev} : 'tsl2550b\\(.*\\)s39'`
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major=`expr ${bus} + 46`
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makedev tsl2550b${bus}s39 c ${major} 0 ${uname} ${gname} 444
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;;
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tty0[0-3])
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# Serial lines.
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line=`expr ${dev} : '.*\\(.\\)'`
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minor=`expr ${line} + 16`
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makedev ${dev} c 4 ${minor} ${uname} tty 666
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;;
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tty[p-s][0-9a-f]|pty[p-s][0-9a-f])
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# Pseudo ttys.
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dev=`expr ${dev} : '...\\(..\\)'`
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|
group=`expr ${dev} : '\\(.\\)'`
|
|
group=`echo ${group} | tr 'pqrs' '0123'`
|
|
pty=`expr ${dev} : '.\\(.\\)'`
|
|
case ${pty} in
|
|
[a-f]) pty=1`/bin/echo ${pty} | tr 'abcdef' '012345'`
|
|
esac
|
|
minor_tty=`expr ${group} '*' 16 + ${pty} + 128`
|
|
minor_pty=`expr ${group} '*' 16 + ${pty} + 192`
|
|
|
|
makedev tty${dev} c 9 ${minor_tty} ${uname} tty 666
|
|
makedev pty${dev} c 9 ${minor_pty} ${uname} tty 666
|
|
;;
|
|
ttyc[1-7])
|
|
# Virtual consoles.
|
|
minor=`expr ${dev} : '....\\(.*\\)'`
|
|
|
|
makedev ${dev} c 4 ${minor} ${uname} tty ${permissions}
|
|
;;
|
|
vnd[0-7])
|
|
# Whole vnode disk devices.
|
|
makedev ${dev} b ${major} 0 ${uname} ${gname} ${permissions}
|
|
;;
|
|
vnd[0-7]p[0-3])
|
|
# Vnode disk primary partitions.
|
|
prefix=`expr ${dev} : '\\(.*\\).'`
|
|
disk=`expr ${dev} : '...\\(.\\)'`
|
|
|
|
for p in 0 1 2 3
|
|
do
|
|
minor=`expr 1 + ${p}`
|
|
|
|
makedev ${prefix}${p} b ${major} ${minor} \
|
|
${uname} ${gname} ${permissions}
|
|
done
|
|
;;
|
|
vnd[0-7]p[0-3]s[0-3])
|
|
# Vnode disk subpartition.
|
|
prefix=`expr ${dev} : '\\(.*\\)...'`
|
|
disk=`expr ${dev} : '...\\(.\\)'`
|
|
|
|
for p in 0 1 2 3
|
|
do
|
|
for s in 0 1 2 3
|
|
do
|
|
minor=`expr 128 + ${p} '*' 4 + ${s}`
|
|
|
|
makedev ${prefix}${p}s${s} b ${major} ${minor} \
|
|
${uname} ${gname} ${permissions}
|
|
done
|
|
done
|
|
;;
|
|
*)
|
|
echo "$0: don't know about ${dev}" >&2
|
|
EXIT=1
|
|
esac
|
|
done
|
|
|
|
exit $EXIT
|