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https://github.com/EnderIce2/Fennix.git
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Merge remote-tracking branch 'Kernel/master'
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EnderIce2
490
Kernel/include/signal.hpp
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490
Kernel/include/signal.hpp
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/*
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This file is part of Fennix Kernel.
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Fennix Kernel is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix Kernel is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef __FENNIX_KERNEL_SIGNAL_H__
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#define __FENNIX_KERNEL_SIGNAL_H__
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#include <unordered_map>
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#include <syscalls.hpp>
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#include <lock.hpp>
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#include <types.h>
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#include <bitset>
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#include <list>
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enum Signals : int
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{
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SIG_NULL = 0,
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/* Process abort signal. */
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SIGABRT = 1,
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/* Alarm clock. */
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SIGALRM = 2,
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/* Access to an undefined portion of a memory object. */
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SIGBUS = 3,
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/* Child process terminated, stopped, or continued. */
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SIGCHLD = 4,
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/* Continue executing, if stopped. */
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SIGCONT = 5,
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/* Erroneous arithmetic operation. */
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SIGFPE = 6,
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/* Hangup. */
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SIGHUP = 7,
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/* Illegal instruction. */
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SIGILL = 8,
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/* Terminal interrupt signal. */
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SIGINT = 9,
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/* Kill (cannot be caught or ignored). */
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SIGKILL = 10,
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/* Write on a pipe with no one to read it. */
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SIGPIPE = 11,
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/* Terminal quit signal. */
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SIGQUIT = 12,
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/* Invalid memory reference. */
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SIGSEGV = 13,
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/* Stop executing (cannot be caught or ignored). */
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SIGSTOP = 14,
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/* Termination signal. */
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SIGTERM = 15,
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/* Terminal stop signal. */
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SIGTSTP = 16,
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/* Background process attempting read. */
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SIGTTIN = 17,
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/* Background process attempting write. */
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SIGTTOU = 18,
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/* User-defined signal 1. */
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SIGUSR1 = 19,
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/* User-defined signal 2. */
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SIGUSR2 = 20,
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/* Pollable event. */
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SIGPOLL = 21,
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/* Profiling timer expired. */
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SIGPROF = 22,
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/* Bad system call. */
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SIGSYS = 23,
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/* Trace/breakpoint trap. */
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SIGTRAP = 24,
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/* High bandwidth data is available at a socket. */
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SIGURG = 25,
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/* Virtual timer expired. */
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SIGVTALRM = 26,
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/* CPU time limit exceeded. */
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SIGXCPU = 27,
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/* File size limit exceeded. */
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SIGXFSZ = 28,
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/**
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* Reserved
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* These are just to match Linux's signal numbers.
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*/
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SIGCOMP1 = 29,
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SIGCOMP2 = 30,
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SIGCOMP3 = 31,
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/* Real-time signals. */
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SIGRTMIN = 32,
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SIGRT_1 = 33,
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SIGRT_2 = 34,
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SIGRT_3 = 35,
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SIGRT_4 = 36,
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SIGRT_5 = 37,
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SIGRT_6 = 38,
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SIGRT_7 = 39,
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SIGRT_8 = 40,
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SIGRT_9 = 41,
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SIGRT_10 = 42,
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SIGRT_11 = 43,
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SIGRT_12 = 44,
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SIGRT_13 = 45,
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SIGRT_14 = 46,
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SIGRT_15 = 47,
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SIGRT_16 = 48,
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SIGRT_17 = 49,
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SIGRT_18 = 50,
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SIGRT_19 = 51,
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SIGRT_20 = 52,
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SIGRT_21 = 53,
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SIGRT_22 = 54,
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SIGRT_23 = 55,
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SIGRT_24 = 56,
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SIGRT_25 = 57,
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SIGRT_26 = 58,
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SIGRT_27 = 59,
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SIGRT_28 = 60,
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SIGRT_29 = 61,
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SIGRT_30 = 62,
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SIGRT_31 = 63,
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SIGRTMAX = 64,
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/* Maximum signal number. */
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SIGNAL_MAX = SIGRTMAX
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};
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enum SignalDispositions
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{
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/**
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* Terminate the process.
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*/
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SIG_TERM,
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/**
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* Ignore the signal.
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*/
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SIG_IGN,
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/**
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* Dump core.
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*/
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SIG_CORE,
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/**
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* Stop the process.
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*/
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SIG_STOP,
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/**
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* Continue the process.
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*/
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SIG_CONT
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};
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enum SignalActions
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{
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SIG_BLOCK,
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SIG_UNBLOCK,
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SIG_SETMASK
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};
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enum SignalActionDisposition : long
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{
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SAD_ERR = -1,
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SAD_DFL = 0,
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SAD_IGN = 1,
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};
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#define SA_NOCLDSTOP 1
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#define SA_NOCLDWAIT 2
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#define SA_SIGINFO 4
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#define SA_RESTORER 0x04000000
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#define SA_ONSTACK 0x08000000
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#define SA_RESTART 0x10000000
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#define SA_NODEFER 0x40000000
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#define SA_RESETHAND 0x80000000
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#define __SI_PAD_SIZE \
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(128 - 2 * sizeof(int) - sizeof(long))
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typedef unsigned long sigset_t;
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union sigval
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{
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int sival_int;
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void *sival_ptr;
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};
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struct sched_param
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{
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int sched_priority;
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};
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struct pthread_attr_t
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{
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uint64_t sig;
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size_t guard_sz;
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bool detach;
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sched_param sched;
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};
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struct sigevent
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{
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int sigev_notify;
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int sigev_signo;
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union sigval sigev_value;
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void (*sigev_notify_function)(union sigval);
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pthread_attr_t *sigev_notify_attributes;
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};
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typedef struct
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{
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int si_signo;
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int si_errno;
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int si_code;
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union
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{
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char __pad[__SI_PAD_SIZE];
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struct
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{
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union
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{
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struct
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{
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pid_t si_pid;
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uid_t si_uid;
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} __piduid;
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struct
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{
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int si_timerid;
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int si_overrun;
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} __timer;
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} __first;
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union
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{
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union sigval si_value;
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struct
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{
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int si_status;
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clock_t si_utime, si_stime;
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} __sigchld;
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} __second;
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} __si_common;
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struct
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{
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void *si_addr;
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short si_addr_lsb;
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union
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{
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struct
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{
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void *si_lower;
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void *si_upper;
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} __addr_bnd;
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unsigned si_pkey;
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} __first;
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} __sigfault;
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struct
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{
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long si_band;
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int si_fd;
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} __sigpoll;
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struct
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{
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void *si_call_addr;
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int si_syscall;
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unsigned si_arch;
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} __sigsys;
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} __si_fields;
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} siginfo_t;
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struct SignalAction
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{
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union
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{
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void (*Handler)(int);
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void (*Action)(int, siginfo_t *, void *);
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sigset_t Disposition;
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} sa_handler;
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std::bitset<64> Mask;
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unsigned long Flags;
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void (*Restorer)(void);
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};
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namespace Tasking
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{
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class Signal
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{
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private:
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struct SignalInfo
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{
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int sig = SIG_NULL;
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union sigval val
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{
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0
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};
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pid_t tid = -1;
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};
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struct StackInfo
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{
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#ifdef a64
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CPU::x64::FXState fx;
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CPU::x64::SchedulerFrame tf;
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uintptr_t GSBase, FSBase, ShadowGSBase;
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#else
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CPU::x32::FXState fx;
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CPU::x32::SchedulerFrame tf;
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uintptr_t GSBase, FSBase;
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#endif
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sigset_t SignalMask;
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int Compatibility;
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#ifdef DEBUG
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// For debugging purposes
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char dbg[6] = {'S', 'I', 'G', 'N', 'A', 'L'};
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#endif
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} __aligned(16) __packed;
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NewLock(SignalLock);
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void *ctx;
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Signals LastSignal = SIG_NULL;
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// Signal trampoline
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void *TrampAddr = nullptr;
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size_t TrampSz = 0;
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std::list<SignalInfo> Queue;
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SignalAction sa[64 + 1]{};
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// std::bitset<SIGNAL_MAX> GlobalMask;
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// SignalDispositions Disposition[SIGNAL_MAX];
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std::list<SignalInfo> Watchers;
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std::unordered_map<Signals, SignalDispositions> Disposition = {
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{SIGHUP, SIG_TERM},
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{SIGINT, SIG_TERM},
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{SIGQUIT, SIG_TERM},
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{SIGILL, SIG_CORE},
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{SIGTRAP, SIG_CORE},
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{SIGABRT, SIG_CORE},
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{SIGBUS, SIG_CORE},
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{SIGFPE, SIG_CORE},
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{SIGKILL, SIG_TERM},
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{SIGUSR1, SIG_TERM},
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{SIGSEGV, SIG_CORE},
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{SIGUSR2, SIG_TERM},
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{SIGPIPE, SIG_TERM},
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{SIGALRM, SIG_TERM},
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{SIGTERM, SIG_TERM},
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{SIGCOMP1, SIG_IGN},
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{SIGCHLD, SIG_IGN},
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{SIGCONT, SIG_CONT},
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{SIGSTOP, SIG_STOP},
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{SIGTSTP, SIG_STOP},
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{SIGTTIN, SIG_STOP},
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{SIGTTOU, SIG_STOP},
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{SIGURG, SIG_IGN},
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{SIGXCPU, SIG_CORE},
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{SIGXFSZ, SIG_CORE},
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{SIGVTALRM, SIG_TERM},
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{SIGPROF, SIG_TERM},
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{SIGCOMP2, SIG_IGN},
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{SIGPOLL, SIG_TERM},
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{SIGCOMP3, SIG_IGN},
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{SIGSYS, SIG_CORE},
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{SIGRTMIN, SIG_IGN},
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{SIGRT_1, SIG_IGN},
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{SIGRT_2, SIG_IGN},
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{SIGRT_3, SIG_IGN},
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{SIGRT_4, SIG_IGN},
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{SIGRT_5, SIG_IGN},
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{SIGRT_6, SIG_IGN},
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{SIGRT_7, SIG_IGN},
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{SIGRT_8, SIG_IGN},
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{SIGRT_9, SIG_IGN},
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{SIGRT_10, SIG_IGN},
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{SIGRT_11, SIG_IGN},
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{SIGRT_12, SIG_IGN},
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{SIGRT_13, SIG_IGN},
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{SIGRT_14, SIG_IGN},
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{SIGRT_15, SIG_IGN},
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{SIGRT_16, SIG_IGN},
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{SIGRT_17, SIG_IGN},
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{SIGRT_18, SIG_IGN},
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{SIGRT_19, SIG_IGN},
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{SIGRT_20, SIG_IGN},
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{SIGRT_21, SIG_IGN},
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{SIGRT_22, SIG_IGN},
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{SIGRT_23, SIG_IGN},
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{SIGRT_24, SIG_IGN},
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{SIGRT_25, SIG_IGN},
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{SIGRT_26, SIG_IGN},
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{SIGRT_27, SIG_IGN},
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{SIGRT_28, SIG_IGN},
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{SIGRT_29, SIG_IGN},
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{SIGRT_30, SIG_IGN},
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{SIGRT_31, SIG_IGN},
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{SIGRTMAX, SIG_IGN}};
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bool LinuxSig();
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int MakeExitCode(Signals sig);
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void InitTrampoline();
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SignalInfo GetAvailableSignal(void *thread);
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public:
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void *GetContext() { return ctx; }
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Signals GetLastSignal() { return LastSignal; }
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int AddWatcher(Signal *who, Signals sig);
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int RemoveWatcher(Signal *who, Signals sig);
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int AddSignal(Signals sig, union sigval val = {0}, pid_t tid = -1);
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int RemoveSignal(Signals sig);
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bool HandleSignal(CPU::SchedulerFrame *tf, void *thread);
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void RestoreHandleSignal(SyscallsFrame *tf, void *thread);
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int SetAction(Signals sig, const SignalAction *act);
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int GetAction(Signals sig, SignalAction *act);
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/**
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* Send a signal to the process
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*
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* @param sig The signal to send
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* (compatibility specific)
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* @param val The value to send
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* @param tid The thread ID to send the signal to
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*
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* @return 0 on success, -errno on error
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*/
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int SendSignal(Signals sig, sigval val = {0}, pid_t tid = -1);
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int WaitAnySignal();
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bool HasPendingSignal() { return !Queue.empty(); }
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/**
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* Wait for a signal
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*
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* @param sig The signal to wait for
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* @param val The value to wait for
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*
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* @return 0 on success, -errno on error
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*/
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int WaitSignal(Signals sig, union sigval *val);
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/**
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* Wait for a signal with a timeout
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*
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* @param sig The signal to wait for
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* @param val The value to wait for
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* @param timeout The timeout to wait for
|
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*
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* @return 0 on success, -errno on error
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*/
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int WaitSignalTimeout(Signals sig, union sigval *val, uint64_t timeout);
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Signal(void *ctx);
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~Signal();
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friend class ThreadSignal;
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};
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||||
|
||||
class ThreadSignal
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||||
{
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||||
private:
|
||||
Signal &pSig;
|
||||
|
||||
public:
|
||||
std::bitset<64> Mask = 0;
|
||||
|
||||
sigset_t Block(sigset_t sig);
|
||||
sigset_t Unblock(sigset_t sig);
|
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sigset_t SetMask(sigset_t sig);
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sigset_t GetMask();
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|
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ThreadSignal(Signal &sig) : pSig(sig) {}
|
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};
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}
|
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#endif // !__FENNIX_KERNEL_SIGNAL_H__
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||||
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