73 lines
3.0 KiB
Bash
73 lines
3.0 KiB
Bash
#!/system/bin/sh
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#
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# Copyright (C) 2015 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# This is an example post-install script. This script will be executed by the
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# update_engine right after finishing writing all the partitions, but before
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# marking the new slot as active. To enable running this program, insert these
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# lines in your product's .mk file (without the # at the beginning):
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# AB_OTA_POSTINSTALL_CONFIG += \
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# RUN_POSTINSTALL_system=true \
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# POSTINSTALL_PATH_system=bin/postinst_example \
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# FILESYSTEM_TYPE_system=ext4 \
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# This script receives no arguments. argv[0] will include the absolute path to
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# the script, including the directory where the new partition was mounted.
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#
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# The script will run from the "postinstall" SELinux domain, from the old system
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# environment (kernel, SELinux rules, etc). New rules and domains introduced by
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# the new system won't be available when this script runs, instead, all the
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# files in the mounted directory will have the attribute "postinstall_file". All
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# the files accessed from here would need to be allowed in the old system or
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# those accesses will fail. For example, the absolute path used in the first
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# line of this script (/system/bin/sh) is indeed the old system's sh binary. If
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# you use a compiled program, you might want to link it statically or use a
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# wrapper script to use the new ldso to run your program (see the
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# --generate-wrappers option in lddtree.py for an example).
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# We get called with two parameters: <target_slot> <status_fd>
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# * <target_slot> is the slot where the new system was just copied. This is
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# normally either 0 or 1. You can get the target suffix running
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# `bootctl get-suffix ${target_slot}`
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# * <status_fd> is a file descriptor number where this script can write to to
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# report the progress of the process. See examples below.
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target_slot="$1"
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status_fd="$2"
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my_dir=$(dirname "$0")
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# We can notify the updater of the progress of our program by writing to the
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# status file descriptor "global_progress <frac>\n".
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print -u${status_fd} "global_progress 0"
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echo "The output of this program will show up in the logs." >&2
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# We are half way done, so we set 0.5.
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print -u${status_fd} "global_progress 0.5"
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echo "Note that this program runs from ${my_dir}"
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# Actually, we were done.
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print -u${status_fd} "global_progress 1.0"
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# If the exit code of this program is an error code (different from 0), the
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# update will fail and the new slot will not be marked as active.
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exit 0
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