9ecd54f24f
different things from this commit:
+ More devices. Devices that were previously ignored are now present.
+ Faster device scanning. "There is no try, only Do" -- f_device_try()
is no longer the basis of device scanning as GEOM provides [nearly]
all devices (doesn't provide network devices).
+ More information available as non-root. Usually you have to be root
to do things like taste filesystems, and that limits the amount of
information available to non-root users; with GEOM, we see all even
running unprivileged as the brunt of information (except for so-
called ``dangerously dedicated'' file systems) is represented by the
`kern.geom.confxml' sysctl(8) MIB.
NB: Only really useful for external scripts that use the API and run as
non-root; where this code is used in bsdconfig(8) and bsdinstall(8)
you are running as root so can detect even ``dangerously dedicated''
file systems that are not present in GEOM; e.g., no PART class for
a DOS filesystem written directly to disk without partition table).
+ No more use of legacy tools such as diskinfo(8) to get disk capacity
or fdisk(8) to see partitions.
MFC after: 1 week
166 lines
4.7 KiB
Plaintext
166 lines
4.7 KiB
Plaintext
if [ ! "$_MEDIA_DOS_SUBR" ]; then _MEDIA_DOS_SUBR=1
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#
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# Copyright (c) 2012-2013 Devin Teske
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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############################################################ INCLUDES
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BSDCFG_SHARE="/usr/share/bsdconfig"
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. $BSDCFG_SHARE/common.subr || exit 1
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f_dprintf "%s: loading includes..." media/dos.subr
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f_include $BSDCFG_SHARE/device.subr
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f_include $BSDCFG_SHARE/dialog.subr
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f_include $BSDCFG_SHARE/media/common.subr
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f_include $BSDCFG_SHARE/struct.subr
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f_include $BSDCFG_SHARE/variable.subr
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BSDCFG_LIBE="/usr/libexec/bsdconfig"
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f_include_lang $BSDCFG_LIBE/include/messages.subr
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############################################################ GLOBALS
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DOS_MOUNTED=
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############################################################ FUNCTIONS
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# f_media_set_dos
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#
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# Return success if we both found and set the media type to be a DOS partition.
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#
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f_media_set_dos()
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{
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f_media_close
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local devs ndevs
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f_device_find "" $DEVICE_TYPE_DOS devs
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f_count ndevs $devs
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if [ ${ndevs:=0} -eq 0 ]; then
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f_show_msg "$msg_no_dos_primary_partitions_found"
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return $FAILURE
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elif [ $ndevs -eq 1 ]; then
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f_struct_copy $devs device_media
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else
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local dev
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local title="$msg_choose_a_dos_partition"
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local prompt="$msg_please_select_dos_partition"
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local hline=
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dev=$( f_device_menu \
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"$title" "$prompt" "$hline" $DEVICE_TYPE_DOS \
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2>&1 >&$DIALOG_TERMINAL_PASSTHRU_FD ) ||
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return $FAILURE
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f_struct_copy "$dev" device_media
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fi
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f_struct device_media || return $FAILURE
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}
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# f_media_init_dos $device
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#
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# Initializes the DOS media device. Returns success if able to mount the DOS
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# partition device using mount_msdosfs(8).
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#
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f_media_init_dos()
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{
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local funcname=f_media_init_dos
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local dev="$1" devname err
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$dev get devname devname || return $FAILURE
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f_dprintf "Init routine called for DOS device. devname=[%s]" \
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"$devname"
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if [ "$DOS_MOUNTED" ]; then
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f_dprintf "DOS device already mounted."
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return $SUCCESS
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fi
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if [ ! -e "$MOUNTPOINT" ]; then
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f_eval_catch $funcname mkdir 'mkdir -p "%s"' "$MOUNTPOINT" ||
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return $FAILURE
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fi
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if ! f_eval_catch -dk err $funcname mount_msdosfs \
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'mount_msdosfs "%s" "%s"' "$devname" "$MOUNTPOINT"
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then
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err="${err#mount_msdosfs: }"; err="${err#$devname: }"
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f_show_msg "$msg_error_mounting_device" \
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"$devname" "$MOUNTPOINT" "$err"
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return $FAILURE
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fi
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DOS_MOUNTED=1
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return $SUCCESS
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}
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# f_media_get_dos $device $file [$probe_type]
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#
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# Returns data from $file on a mounted DOS partition device. Similar to cat(1).
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# If $probe_type is present and non-NULL, returns success if $file exists. If
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# $probe_type is equal to $PROBE_SIZE, prints the size of $file in bytes to
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# standard-out.
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#
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f_media_get_dos()
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{
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local dev="$1" file="$2" probe_type="$3"
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local name
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$dev get name name
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f_dprintf "f_media_get_dos: dev=[%s] file=[%s] probe_type=%s" \
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"$name" "$file" "$probe_type"
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f_media_generic_get "$MOUNTPOINT" "$file" "$probe_type"
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}
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# f_media_shutdown_dos $device
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#
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# Shuts down the DOS partition device using umount(8). Return status should be
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# ignored.
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#
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f_media_shutdown_dos()
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{
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local funcname=f_media_shutdown_dos
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local dev="$1" err
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[ "$DOS_MOUNTED" ] || return $FAILURE
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if ! f_eval_catch -dk err $funcname umount \
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'umount -f "%s"' "$MOUNTPOINT"
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then
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err="${err#umount: }"; err="${err#*: }"
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f_show_msg "$msg_could_not_unmount_the_dos_partition" \
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"$MOUNTPOINT" "$err"
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else
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DOS_MOUNTED=
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fi
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}
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############################################################ MAIN
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f_dprintf "%s: Successfully loaded." media/dos.subr
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fi # ! $_MEDIA_DOS_SUBR
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