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https://github.com/RT-Thread/rt-thread.git
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944f3d05b5
The patch introduces support for system reboot functionality and process teardown, allowing for a clean shutdown and unmounting of the root filesystem. This is necessary for ensuring a proper system shutdown process, especially when dealing with resource cleanup and ensuring that all processes have exited before system shutdown. Changes: - Added `lwp_teardown()` function to handle process cleanup and system teardown. - Introduced `lwp_pid_wait_for_empty()` to wait for process ID table emptiness before proceeding with shutdown. - Updated `dfs_mnt_unref()` to trigger callbacks when unmounting a filesystem. - Added new reboot types (`RB_AUTOBOOT`, `RB_POWER_OFF`) and implemented their corresponding actions, including cleanup of processes and unmounting root filesystem. - Extended `sys_reboot()` to handle reboot and power off types with appropriate callbacks for process and filesystem teardown. - Introduced callback mechanism for root filesystem unmount notifications. Signed-off-by: Shell <smokewood@qq.com>
75 lines
2.1 KiB
C
75 lines
2.1 KiB
C
/*
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* Copyright (c) 2006-2023, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2023-05-05 Bernard Implement dentry in dfs v2.0
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*/
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#ifndef DFS_MNT_H__
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#define DFS_MNT_H__
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#include <rtservice.h>
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#include <rtthread.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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struct dfs_mnt;
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struct dfs_dentry;
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struct dfs_filesystem_ops;
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struct dfs_mnt
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{
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struct dfs_mnt *parent; /* the parent mounted file system */
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rt_list_t sibling; /* the sibling node for mounted list */
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rt_list_t child; /* the child node for mounted list */
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char *fullpath; /* the fullpath of this mounted file system */
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int flags; /* the falgs of this mounted file system */
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#define MNT_IS_ALLOCED 0x1 /* the mnt struct is allocated */
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#define MNT_IS_ADDLIST 0x2 /* the mnt struct is added into list */
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#define MNT_IS_MOUNTED 0x4 /* the mnt struct is mounted */
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#define MNT_IS_UMOUNT 0x8 /* the mnt is unmount */
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#define MNT_IS_LOCKED 0x10 /* the mnt is locked */
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#define MNT_FORCE 0x20 /* the mnt force unmount */
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rt_atomic_t ref_count; /* reference count */
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rt_device_t dev_id; /* the mounted device id */
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const struct dfs_filesystem_ops *fs_ops;
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void *data;
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};
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struct dfs_mnt *dfs_mnt_create(const char *path);
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int dfs_mnt_destroy(struct dfs_mnt* mnt);
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int dfs_mnt_list(struct dfs_mnt* mnt);
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int dfs_mnt_insert(struct dfs_mnt* mnt, struct dfs_mnt* child);
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struct dfs_mnt *dfs_mnt_dev_lookup(rt_device_t dev_id);
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struct dfs_mnt *dfs_mnt_lookup(const char *path);
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const char *dfs_mnt_get_mounted_path(struct rt_device *device);
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struct dfs_mnt* dfs_mnt_ref(struct dfs_mnt* mnt);
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int dfs_mnt_unref(struct dfs_mnt* mnt);
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rt_bool_t dfs_mnt_has_child_mnt(struct dfs_mnt *mnt, const char* fullpath);
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int dfs_mnt_foreach(struct dfs_mnt* (*func)(struct dfs_mnt *mnt, void *parameter), void *parameter);
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typedef void (*dfs_mnt_umnt_cb_t)(struct dfs_mnt *mnt);
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RT_OBJECT_HOOKLIST_DECLARE(dfs_mnt_umnt_cb_t, dfs_mnt_umnt);
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#ifdef __cplusplus
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}
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#endif
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#endif
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