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annotate sources/root-filesystem/sbin/init.sh @ 1804:8b464e266623 draft

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Cosmetic tweak.
author Rob Landley <rob@landley.net>
date Mon, 02 Nov 2015 01:15:36 -0600
parents 317e0a1e895d
children 297a5d07c73b
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cb94b575c2d2 Switch from ash (which #errors building nommu) to hush.
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1 #!/bin/hush
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3 # Announce version
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4 sed -n 's/PRETTY_NAME="\([^"]*\)"/\1/p' /etc/os-release
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5
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6 export HOME=/home
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b89324905ca2 Giant redo to put simple-root-filesystem in initmpfs.
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7 export PATH=/bin:/sbin
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8
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9 # Mount filesystems
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10 mountpoint -q proc || mount -t proc proc proc
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11 mountpoint -q sys || mount -t sysfs sys sys
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d97db0ec50fe If host kernel hasn't got devtmpfs, call mdev -s. (Mostly for chroot-setup.sh.)
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12 mountpoint -q dev || mount -t devtmpfs dev dev || mdev -s
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8c0b1c9b6525 Mounting a tmpfs on /dev means /dev/pts isn't there, so mkdir it.
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13 mkdir -p dev/pts
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14 mountpoint -q dev/pts || mount -t devpts dev/pts dev/pts
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15 # /tmp inherited from initmpfs
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16
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54db423b7fef If CPUS isn't set, calculate it. KVM or chroot can have >1.
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17 # If nobody said how many CPUS to use in builds, try to figure it out.
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18 if [ -z "$CPUS" ]
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19 then
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20 export CPUS=$(echo /sys/devices/system/cpu/cpu[0-9]* | wc -w)
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21 [ "$CPUS" -lt 1 ] && CPUS=1
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22 fi
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2957c1dd95cb Update native prompt to show amount of parallelism a build can get (indicating whether distcc is enabled).
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23 export PS1='($HOST:$CPUS) \w \$ '
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25 # When running under qemu, do some more setup
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26 if [ $$ -eq 1 ]
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27 then
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29 # Note that 10.0.2.2 forwards to 127.0.0.1 on the host.
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30
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31 # Setup networking for QEMU (needs /proc)
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32 ifconfig eth0 10.0.2.15
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33 route add default gw 10.0.2.2
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35 # If we have no RTC, try rdate instead:
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36 [ "$(date +%s)" -lt 1000 ] && rdate 10.0.2.2 # or time-b.nist.gov
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38 # mount hda on /usr/overlay, hdb on /home, and hdc on /mnt, if available
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40 [ -b /dev/[hsv]da ] &&
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41 mkdir -p /usr/overlay && mount /dev/[hsv]da /usr/overlay
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42 [ -b /dev/[hsv]db ] && mount -o noatime /dev/[hsv]db /home && cd /home
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43 [ -b /dev/[hsv]dc ] && mount -o ro /dev/[hsv]dc /mnt
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18fa21056b01 System Images' sbin/init.sh should mount /dev/hdc (if it exists) on /mnt, and then run /mnt/init (instead of a shell prompt) if that exists.
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44
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1a24dc2bb3cb Make sure PATH and CONSOLE are properly exported even when kernel command line doesn't provide the right data.
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45 [ -z "$CONSOLE" ] &&
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46 CONSOLE="$(sed -n 's@.* console=\(/dev/\)*\([^ ]*\).*@\2@p' /proc/cmdline)"
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48 # Call overlay/init if available
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49 [ -e /usr/overlay/init ] && . /usr/overlay/init
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50
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51 [ -z "$HANDOFF" ] && echo Type exit when done. && HANDOFF=/bin/hush
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52 [ -z "$CONSOLE" ] && CONSOLE=console
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1ad777637d2d Migrate oneit out of toybox into sources/toys as a standalone program, and fix it so pid 1 has / as its working directory so we can umount /home if necessary.
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53 exec /sbin/oneit -c /dev/"$CONSOLE" "$HANDOFF"
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54
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55 # If we're not PID 1, it's probably a chroot.
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56 else
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c48fc63b7df7 Fix a [ -z $test ] that produced multiple words for the $test part, but didn't have "$test" in quotes. I'm not sure how that ever worked.
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57 [ ! -z "$(grep "default for QEMU" /etc/resolv.conf)" ] &&
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725e41d66379 Use Google's nameserver, use ntpd to set time for chroot (if necessary), don't umount home if we didn't mount it.
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58 echo "nameserver 8.8.8.8" > /etc/resolv.conf
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60 # If we have no RTC, try using ntp to set the clock
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61 [ "$(date +%s)" -lt 10000000 ] && ntpd -nq -p north-america.pool.ntp.org
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62
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63 # Switch to a shell with command history.
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64
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65 echo Type exit when done.
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66 /bin/hush
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67 cd /
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68 umount ./dev/pts
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69 umount ./dev
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70 umount ./sys
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71 umount ./proc
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72 sync
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73 fi