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acpi.hpp
bitmap.hpp
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convert.h
cpu.hpp
crc32.h
cwalk.h
debug.h
disk.hpp
display.hpp
driver.hpp
dumper.hpp
elf.h
exec.hpp
filesystem.hpp
hashmap.hpp
ini.h
intrin.hpp
ints.hpp
io.h
kcon.hpp
kconfig.hpp
kshell.hpp
lock.hpp
macho.h
md5.h
memory.hpp
msexec.h
pci.hpp
power.hpp
printf.h
rand.hpp
ring.hpp
scheduler.hpp
signal.hpp
smp.hpp
static_vector
symbols.hpp
syscalls.hpp
targp.h
task.hpp
time.hpp
tty.hpp
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CREDITS.md
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LICENSES.md
Makefile
README.md
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dump.sh
kernel.cpp
kernel.h
kernel_config.cpp
kernel_thread.cpp
kernel_vfs.cpp
491 lines
9.3 KiB
C++
491 lines
9.3 KiB
C++
/*
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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::TrapFrame 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::TrapFrame 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::TrapFrame *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:
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Signal &pSig;
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public:
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std::bitset<64> Mask = 0;
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sigset_t Block(sigset_t sig);
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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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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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