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|
#!/bin/sh
#
# Make standard devices
#
PATH=/bin:/usr/bin
ECHO=: # Change to "echo" to echo commands.
EXEC="" # Change to ":" to suppress command execution.
DEVDIR=`pwd` # Reset below by -D/--devdir command line option.
while :; do
case "$1" in
--help|"-?")
echo "\
Usage: $0 [OPTION...] DEVNAME...
Make filesystem nodes for accessing standard system devices
-D, --devdir=DIR Use DIR when a device node name must be
embedded in a translator; default is the cwd
-n, --dry-run Don't actually execute any commands
-v, --verbose Show what commands are executed to make the devices
-?, --help Give this help list
--usage Give a short usage message
-V, --version Print program version"
exit 0;;
--devdir) DEVDIR="$2"; shift 2;;
--devdir=*) DEVDIR="`echo "$1" | sed 's/^--devdir=//'`"; shift 1;;
-D) DEVDIR="$2"; shift 2;;
-D*) DEVDIR="`echo "$1" | sed 's/^-D//'`"; shift 1;;
--verbose|-v) ECHO=echo; shift;;
--dry-run|-n) EXEC=:; shift;;
-nv|-vn) ECHO=echo; EXEC=:; shift;;
--usage)
echo "Usage: $0 [-V?] [-D DIR] [--help] [--usage] [--version] [--devdir=DIR] DEVNAME..."
exit 0;;
--version|-V)
echo "STANDARD_HURD_VERSION_MAKEDEV_"; exit 0;;
-*)
echo 1>&2 "$0: unrecognized option \`$1'"
echo 1>&2 "Try \`$0 --help' or \`$0 --usage' for more information";
exit 1;;
*)
break;;
esac
done
case "$#" in 0)
echo 1>&2 "Usage: $0 [OPTION...] DEVNAME..."
echo 1>&2 "Try \`$0 --help' or \`$0 --usage' for more information"
exit 1;;
esac
function cmd {
eval $ECHO "$@"
eval $EXEC "$@"
}
function st {
local NODE="$1"
local OWNER="$2"
local PERM="$3"
shift 3
if cmd settrans -cg "$NODE"; then
cmd chown "$OWNER" "$NODE"
cmd chmod "$PERM" "$NODE"
cmd settrans "$NODE" "$@"
fi
}
function lose {
local line
for line; do
echo 1>&2 "$0: $line"
done
exit 1
}
function mkdev {
local I
for I; do
case "$I" in
/* | */*)
lose "Device names cannot contain directories" \
"Change to target directory and run $0 from there."
;;
std)
mkdev console tty null zero full fd time mem klog shm
;;
console|com[0-9])
st $I root 600 /hurd/term ${DEVDIR}/$I device $I;;
vcs)
st $I root 600 /hurd/console;;
tty[1-9][0-9]|tty[1-9])
st $I root 600 /hurd/term ${DEVDIR}/$I hurdio \
${DEVDIR}/vcs/`echo $I | sed -e s/tty//`/console;;
null)
st $I root 666 /hurd/null;;
full)
st $I root 666 /hurd/null --full;;
zero)
st $I root 666 /hurd/storeio -Tzero;;
tty)
st $I root 666 /hurd/magic tty;;
fd)
st $I root 666 /hurd/magic --directory fd
cmd ln -f -s fd/0 stdin
cmd ln -f -s fd/1 stdout
cmd ln -f -s fd/2 stderr
;;
'time')
st $I root 644 /hurd/storeio --no-cache time ;;
mem)
st $I root 660 /hurd/storeio --no-cache mem ;;
klog)
st $I root 660 /hurd/streamio kmsg;;
# ptys
[pt]ty[pqrstuvwxyzPQRS]?)
# Make one pty, both the master and slave halves.
local id="${I:3}"
st pty$id root 666 /hurd/term ${DEVDIR}/pty$id \
pty-master ${DEVDIR}/tty$id
st tty$id root 666 /hurd/term ${DEVDIR}/tty$id \
pty-slave ${DEVDIR}/pty$id
;;
[pt]ty[pqrstuvwxyzPQRS])
# Make a bunch of ptys.
local n
for n in 0 1 2 3 4 5 6 7 8 9 \
a b c d e f g h i j k l m n o p q r s t u v; do
mkdev ${I}${n}
done
;;
fd*|mt*)
st $I root 640 /hurd/storeio $I
;;
[hrsc]d*)
local n="${I#?d}"
local major="${n%%[!0-9]*}"
if [ -z "$major" ]; then
lose "$I: Invalid device name: must supply a device number"
fi
local minor="${n##$major}"
case "$minor" in
'') ;; # Whole disk
[a-z]) ;; # BSD partition syntax, no slice syntax
s[1-9]*) # Slice syntax.
local slicestuff="${minor#s}"
local slice="${slicestuff%%[!0-9]*}"
local rest="${slicestuff##$slice}"
case "$slice" in
[1-9] | [1-9][0-9]) ;;
*)
lose "$I: Invalid slice number \`$slice'"
;;
esac
case "$rest" in
'') ;; # Whole slice
[a-z]) ;; # BSD partition after slice
*)
lose "$I: Invalid partition \`$rest'"
;;
esac
;;
*)
lose "$I: Invalid slice or partition syntax"
;;
esac
# The device name passed all syntax checks, so finally use it!
st $I root 640 /hurd/storeio $I
;;
# /dev/shm is used by the POSIX.1 shm_open call in libc.
# We don't want the underlying node to be written by randoms,
# but the filesystem presented should be writable by anyone
# and have the sticky bit set so others' files can't be removed.
# tmpfs requires an arbitrary size limitation here. To be like
# Linux, we tell tmpfs to set the size to half the physical RAM
# in the machine.
shm)
st $I root 644 /hurd/tmpfs --mode=1777 50%
;;
# Linux compatibility
loop*)
# In Linux an inactive "/dev/loopN" device acts like /dev/null.
# The `losetup' script changes the translator to "activate" the device.
st $I root 640 /hurd/null
;;
*)
lose "$I: Unknown device name"
;;
esac
done
}
mkdev "$@"
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