54bcc5ffd5
It turns out dump_file is used on a number of /proc and system files. In one case, the read of a file stalled and caused a bugreport to hang forever. It's still possible if there is a kernel bug that this could stall forever, but less likely. Also, change the return type of nanotime to uint64_t. Testing: - Created a named fifo and verified that dump_file fails with a timeout. - Created a large /data/anr/traces.txt to verify that large files still dump properly and that the additional NONBLOCK parameter doesn't cause a problem. - Created a dummy /data/tombstones/tombstone_00 to verify that the dump of these files still works. - Compared a dump using the old dumpstate to the new dumpstate to verify nothing obviously different. Bug: 19117030 Change-Id: I0d3dd27583c853cdaccd2fd278748cb5f9ccd4fb
85 lines
2.7 KiB
C
85 lines
2.7 KiB
C
/*
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* Copyright (C) 2008 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 _DUMPSTATE_H_
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#define _DUMPSTATE_H_
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#include <time.h>
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#include <unistd.h>
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#include <stdbool.h>
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#include <stdio.h>
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#define SU_PATH "/system/xbin/su"
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typedef void (for_each_pid_func)(int, const char *);
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typedef void (for_each_tid_func)(int, int, const char *);
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typedef void (for_each_userid_func)(int);
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/* prints the contents of a file */
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int dump_file(const char *title, const char *path);
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/* prints the contents of the fd
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* fd must have been opened with the flag O_NONBLOCK.
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*/
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int dump_file_from_fd(const char *title, const char *path, int fd);
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/* forks a command and waits for it to finish -- terminate args with NULL */
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int run_command(const char *title, int timeout_seconds, const char *command, ...);
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/* prints all the system properties */
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void print_properties();
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/* redirect output to a service control socket */
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void redirect_to_socket(FILE *redirect, const char *service);
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/* redirect output to a file */
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void redirect_to_file(FILE *redirect, char *path);
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/* dump Dalvik and native stack traces, return the trace file location (NULL if none) */
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const char *dump_traces();
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/* for each process in the system, run the specified function */
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void for_each_pid(for_each_pid_func func, const char *header);
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/* for each thread in the system, run the specified function */
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void for_each_tid(for_each_tid_func func, const char *header);
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/* for each user id in the system, run the specified function */
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void for_each_userid(for_each_userid_func func, const char *header);
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/* Displays a blocked processes in-kernel wait channel */
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void show_wchan(int pid, int tid, const char *name);
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/* Runs "showmap" for a process */
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void do_showmap(int pid, const char *name);
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/* Gets the dmesg output for the kernel */
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void do_dmesg();
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/* Dumps settings for a given user id */
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void do_dump_settings(int userid);
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/* Prints the contents of all the routing tables, both IPv4 and IPv6. */
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void dump_route_tables();
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/* Play a sound via Stagefright */
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void play_sound(const char *path);
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/* Implemented by libdumpstate_board to dump board-specific info */
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void dumpstate_board();
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#endif /* _DUMPSTATE_H_ */
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