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annotate sources/root-filesystem/sbin/init.sh @ 1728:b89324905ca2 draft

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Giant redo to put simple-root-filesystem in initmpfs. NO_NATIVE_COMPILER and NO_ROOTDIRS went away, kernel built moved back into system-image.sh, old root-filesystem.sh and root-image.sh are no longer used, I need to fix up several things (chroot-splice.sh, the lfs-bootstrap build is breaking in mpfr, haven't tested this on all targets yet... but the basics are in.
author Rob Landley <rob@landley.net>
date Fri, 06 Feb 2015 01:51:54 -0600
parents 7083fb6ef82c
children 34f7ca02767c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1577
7083fb6ef82c Bash is causing a (harmless but annoying) segfault on arm for some reason, so use ash to run init script.
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1 #!/bin/ash
190
12b7ecb79ad0 A little init script for mini-native.sh that gets it read to build stuff.
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2
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0b384865cf0c Make the init script care about PID rather than script name for determining qemu vs chroot invocation.
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3 export HOME=/home
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4 export PATH=/bin:/sbin
415
acb61c298000 Make setup script reentrant, don't require preset PATH. Based on changes by Vladimir Dronnikov.
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5
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6 # Populate /dev
1440
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7 mountpoint -q proc || mount -t proc proc proc
415
acb61c298000 Make setup script reentrant, don't require preset PATH. Based on changes by Vladimir Dronnikov.
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8 mountpoint -q sys || mount -t sysfs sys sys
1474
d97db0ec50fe If host kernel hasn't got devtmpfs, call mdev -s. (Mostly for chroot-setup.sh.)
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9 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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10 mkdir -p dev/pts
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84ea1b53b73c Mounting /dev/pts is useful.
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11 mountpoint -q dev/pts || mount -t devpts dev/pts dev/pts
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12
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54db423b7fef If CPUS isn't set, calculate it. KVM or chroot can have >1.
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13 # If nobody said how many CPUS to use in builds, try to figure it out.
54db423b7fef If CPUS isn't set, calculate it. KVM or chroot can have >1.
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14 if [ -z "$CPUS" ]
54db423b7fef If CPUS isn't set, calculate it. KVM or chroot can have >1.
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15 then
54db423b7fef If CPUS isn't set, calculate it. KVM or chroot can have >1.
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16 export CPUS=$(echo /sys/devices/system/cpu/cpu[0-9]* | wc -w)
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17 [ "$CPUS" -lt 1 ] && CPUS=1
54db423b7fef If CPUS isn't set, calculate it. KVM or chroot can have >1.
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18 fi
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2957c1dd95cb Update native prompt to show amount of parallelism a build can get (indicating whether distcc is enabled).
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19 export PS1='($HOST:$CPUS) \w \$ '
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c1ab614da7b9 Change shell prompt in system image to start with ($HOST)
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20
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21 # If we're running under qemu, do some more setup
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22 if [ $$ -eq 1 ]
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23 then
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24
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25 # Note that 10.0.2.2 forwards to 127.0.0.1 on the host.
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26
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27 # Setup networking for QEMU (needs /proc)
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28 ifconfig eth0 10.0.2.15
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29 route add default gw 10.0.2.2
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30
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31 # If we have no RTC, try rdate instead:
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b0aeb3446aa5 Some packages build differently as root than as a normal user, so add a "guest" account giving a non-root user option. Tweak mdev so it's vaguely useful. (Thanks to Vladimir Dronnikov for the idea.)
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32 [ "$(date +%s)" -lt 1000 ] && rdate 10.0.2.2 # or time-b.nist.gov
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33
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34 mount -t tmpfs /tmp /tmp
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35
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36 if [ -b /dev/[hsv]da ]
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37 then
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38 mkdir -p /usr/hda
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39 mount /dev/[hsv]da /usr/hda
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40 cp -rs /usr/hda/. /
b89324905ca2 Giant redo to put simple-root-filesystem in initmpfs.
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41 fi
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42
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43 # If there's a /dev/hdb or /dev/sdb, mount it on home, else tmpfs
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44
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45 [ -b /dev/[hsv]db ] && HOMEDEV=/dev/[hsv]db
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46 if [ ! -z "$HOMEDEV" ]
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47 then
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78cbd428d60e Feed noatime flag to init.sh mounts.
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48 mount -o noatime $HOMEDEV /home
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49 else
1054
37c7bd84c777 Updates to init.sh: only mount tmpfs on /home if / isn't writeable, and use /proc/cmdline instead of grepping dmesg to get console info.
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50 # Only mount a tmpfs if / isn't writeable.
37c7bd84c777 Updates to init.sh: only mount tmpfs on /home if / isn't writeable, and use /proc/cmdline instead of grepping dmesg to get console info.
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51 touch /.temp 2>/dev/null
37c7bd84c777 Updates to init.sh: only mount tmpfs on /home if / isn't writeable, and use /proc/cmdline instead of grepping dmesg to get console info.
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52 [ $? -ne 0 ] && mount -t tmpfs /home /home || rm /.temp
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53 fi
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54 cd /home
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55
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56 # If there's a /dev/hdc mount it on /mnt
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57
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58 [ -b /dev/[hsv]dc ] && MNTDEV=/dev/[hsv]dc
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59 [ ! -z "$MNTDEV" ] && mount -o ro $MNTDEV /mnt
833
18fa21056b01 System Images' sbin/init.sh should mount /dev/hdc (if it exists) on /mnt, and then run /mnt/init (instead of a shell prompt) if that exists.
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60
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1a24dc2bb3cb Make sure PATH and CONSOLE are properly exported even when kernel command line doesn't provide the right data.
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61 [ -z "$CONSOLE" ] &&
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62 CONSOLE="$(sed -n 's@.* console=\(/dev/\)*\([^ ]*\).*@\2@p' /proc/cmdline)"
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63 [ -z "$CONSOLE" ] && CONSOLE=console
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64
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65 if [ -z "$DISTCC_HOSTS" ]
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66 then
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67 echo "Not using distcc."
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68 else
4bfe2b34dd9f Largeish refactoring/simplification of run-emulator.sh and associated code. Now automatically sets up the distcc trick if the appropriate $ARCH-cc toolchain is in the $PATH (or the current directory).
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69 echo "Distcc acceleration enabled."
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70 fi
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71 echo Type exit when done.
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72
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73 HANDOFF=/bin/ash
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d424fd68f991 Idea from Johnicholas Hines: add a three second "read" before running hdc's init so the user can press a key to get a command shell instead.
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74 if [ -e /mnt/init ]
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75 then
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76 X=xx
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77 echo "Press any key for command line..."
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78 read -t 3 -n 1 X
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79 if [ "$X" == xx ]
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80 then
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81 echo "Running automated build."
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82 HANDOFF=/mnt/init
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83 fi
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84 fi
1133
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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85 exec /sbin/oneit -c /dev/"$CONSOLE" "$HANDOFF"
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86
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87 # If we're not PID 1, it's probably a chroot.
425
6a8f6cecce7c Cleanup after chroot-setup.sh, and set nameserver.
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88 else
883
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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89 [ ! -z "$(grep "default for QEMU" /etc/resolv.conf)" ] &&
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725e41d66379 Use Google's nameserver, use ntpd to set time for chroot (if necessary), don't umount home if we didn't mount it.
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90 echo "nameserver 8.8.8.8" > /etc/resolv.conf
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91
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92 # If we have no RTC, try using ntp to set the clock
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93 [ "$(date +%s)" -lt 10000000 ] && ntpd -nq -p north-america.pool.ntp.org
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94
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95 # Switch to a shell with command history.
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37c8a6c9a493 Teach qemu-setup.sh to use oneit so ctrl-c works under the emulator. Also
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96
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97 echo Type exit when done.
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98 /bin/ash
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99 cd /
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100 umount ./dev/pts
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101 umount ./dev
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102 umount ./sys
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103 umount ./proc
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104 sync
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105 fi