35403ebaf8
This is done by parsing 'androidboot.fstab=<fstab>' kernel cmdline option to get the fstab file that *only* specifies partitions to be mounted early (i.e. in init's first stage). Note that, the same fstab file may not be used as an argument to mount_all later in the boot as that will cause fs_mgr to fail with EBUSY. TODO: - Possibly add a new mount_mode so the same fstab can be used for early_mount, 'mount_all --early/--late' etc. - Add support for dm-verity enabled partitions to mount early. - Add support for getting fstab arguments through DT instead of kernel cmdline. Bug: 27805372 Test: Boot angler by passing a seperate fstab file using the kernel cmdline option to mount vendor partition early, remove the vendor partition entry from the main fstab file for the test. Boot sailfish by passing a seperate fstab entry via device tree to mount vendor partition early. Remove vendor partition entry from the main fstab file for the test Change-Id: I18785b893c54c8cee960ab44d5e8f83e5d624aa8 Signed-off-by: Sandeep Patil <sspatil@google.com>
58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
/*
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* Copyright (C) 2007 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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#ifndef _INIT_DEVICES_H
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#define _INIT_DEVICES_H
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#include <functional>
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#include <sys/stat.h>
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enum coldboot_action_t {
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// coldboot continues without creating the device for the uevent
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COLDBOOT_CONTINUE = 0,
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// coldboot continues after creating the device for the uevent
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COLDBOOT_CREATE,
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// coldboot stops after creating the device for uevent but doesn't
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// create the COLDBOOT_DONE file
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COLDBOOT_STOP,
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// same as COLDBOOT_STOP, but creates the COLDBOOT_DONE file
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COLDBOOT_FINISH
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};
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struct uevent {
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const char* action;
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const char* path;
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const char* subsystem;
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const char* firmware;
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const char* partition_name;
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const char* device_name;
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int partition_num;
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int major;
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int minor;
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};
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typedef std::function<coldboot_action_t(struct uevent* uevent)> coldboot_callback;
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extern coldboot_action_t handle_device_fd(coldboot_callback fn = nullptr);
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extern void device_init(const char* path = nullptr, coldboot_callback fn = nullptr);
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extern void device_close();
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extern int add_dev_perms(const char *name, const char *attr,
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mode_t perm, unsigned int uid,
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unsigned int gid, unsigned short prefix,
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unsigned short wildcard);
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int get_device_fd();
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#endif /* _INIT_DEVICES_H */
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