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This commit is contained in:
EnderIce2
2024-01-19 06:47:42 +02:00
parent fd15592608
commit 96daa43d38
282 changed files with 25486 additions and 15700 deletions
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2998
syscalls/linux.cpp
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381
syscalls/linux_syscalls.hpp
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@ -1,381 +0,0 @@
/*
This file is part of Fennix Kernel.
Fennix Kernel is free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.
Fennix Kernel is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef __FENNIX_KERNEL_LINUX_SYSCALLS_H__
#define __FENNIX_KERNEL_LINUX_SYSCALLS_H__
#include <types.h>
#define __NR_read 0
#define __NR_write 1
#define __NR_open 2
#define __NR_close 3
#define __NR_stat 4
#define __NR_fstat 5
#define __NR_lstat 6
#define __NR_poll 7
#define __NR_lseek 8
#define __NR_mmap 9
#define __NR_mprotect 10
#define __NR_munmap 11
#define __NR_brk 12
#define __NR_rt_sigaction 13
#define __NR_rt_sigprocmask 14
#define __NR_rt_sigreturn 15
#define __NR_ioctl 16
#define __NR_pread64 17
#define __NR_pwrite64 18
#define __NR_readv 19
#define __NR_writev 20
#define __NR_access 21
#define __NR_pipe 22
#define __NR_select 23
#define __NR_sched_yield 24
#define __NR_mremap 25
#define __NR_msync 26
#define __NR_mincore 27
#define __NR_madvise 28
#define __NR_shmget 29
#define __NR_shmat 30
#define __NR_shmctl 31
#define __NR_dup 32
#define __NR_dup2 33
#define __NR_pause 34
#define __NR_nanosleep 35
#define __NR_getitimer 36
#define __NR_alarm 37
#define __NR_setitimer 38
#define __NR_getpid 39
#define __NR_sendfile 40
#define __NR_socket 41
#define __NR_connect 42
#define __NR_accept 43
#define __NR_sendto 44
#define __NR_recvfrom 45
#define __NR_sendmsg 46
#define __NR_recvmsg 47
#define __NR_shutdown 48
#define __NR_bind 49
#define __NR_listen 50
#define __NR_getsockname 51
#define __NR_getpeername 52
#define __NR_socketpair 53
#define __NR_setsockopt 54
#define __NR_getsockopt 55
#define __NR_clone 56
#define __NR_fork 57
#define __NR_vfork 58
#define __NR_execve 59
#define __NR_exit 60
#define __NR_wait4 61
#define __NR_kill 62
#define __NR_uname 63
#define __NR_semget 64
#define __NR_semop 65
#define __NR_semctl 66
#define __NR_shmdt 67
#define __NR_msgget 68
#define __NR_msgsnd 69
#define __NR_msgrcv 70
#define __NR_msgctl 71
#define __NR_fcntl 72
#define __NR_flock 73
#define __NR_fsync 74
#define __NR_fdatasync 75
#define __NR_truncate 76
#define __NR_ftruncate 77
#define __NR_getdents 78
#define __NR_getcwd 79
#define __NR_chdir 80
#define __NR_fchdir 81
#define __NR_rename 82
#define __NR_mkdir 83
#define __NR_rmdir 84
#define __NR_creat 85
#define __NR_link 86
#define __NR_unlink 87
#define __NR_symlink 88
#define __NR_readlink 89
#define __NR_chmod 90
#define __NR_fchmod 91
#define __NR_chown 92
#define __NR_fchown 93
#define __NR_lchown 94
#define __NR_umask 95
#define __NR_gettimeofday 96
#define __NR_getrlimit 97
#define __NR_getrusage 98
#define __NR_sysinfo 99
#define __NR_times 100
#define __NR_ptrace 101
#define __NR_getuid 102
#define __NR_syslog 103
#define __NR_getgid 104
#define __NR_setuid 105
#define __NR_setgid 106
#define __NR_geteuid 107
#define __NR_getegid 108
#define __NR_setpgid 109
#define __NR_getppid 110
#define __NR_getpgrp 111
#define __NR_setsid 112
#define __NR_setreuid 113
#define __NR_setregid 114
#define __NR_getgroups 115
#define __NR_setgroups 116
#define __NR_setresuid 117
#define __NR_getresuid 118
#define __NR_setresgid 119
#define __NR_getresgid 120
#define __NR_getpgid 121
#define __NR_setfsuid 122
#define __NR_setfsgid 123
#define __NR_getsid 124
#define __NR_capget 125
#define __NR_capset 126
#define __NR_rt_sigpending 127
#define __NR_rt_sigtimedwait 128
#define __NR_rt_sigqueueinfo 129
#define __NR_rt_sigsuspend 130
#define __NR_sigaltstack 131
#define __NR_utime 132
#define __NR_mknod 133
#define __NR_uselib 134
#define __NR_personality 135
#define __NR_ustat 136
#define __NR_statfs 137
#define __NR_fstatfs 138
#define __NR_sysfs 139
#define __NR_getpriority 140
#define __NR_setpriority 141
#define __NR_sched_setparam 142
#define __NR_sched_getparam 143
#define __NR_sched_setscheduler 144
#define __NR_sched_getscheduler 145
#define __NR_sched_get_priority_max 146
#define __NR_sched_get_priority_min 147
#define __NR_sched_rr_get_interval 148
#define __NR_mlock 149
#define __NR_munlock 150
#define __NR_mlockall 151
#define __NR_munlockall 152
#define __NR_vhangup 153
#define __NR_modify_ldt 154
#define __NR_pivot_root 155
#define __NR__sysctl 156
#define __NR_prctl 157
#define __NR_arch_prctl 158
#define __NR_adjtimex 159
#define __NR_setrlimit 160
#define __NR_chroot 161
#define __NR_sync 162
#define __NR_acct 163
#define __NR_settimeofday 164
#define __NR_mount 165
#define __NR_umount2 166
#define __NR_swapon 167
#define __NR_swapoff 168
#define __NR_reboot 169
#define __NR_sethostname 170
#define __NR_setdomainname 171
#define __NR_iopl 172
#define __NR_ioperm 173
#define __NR_create_module 174
#define __NR_init_module 175
#define __NR_delete_module 176
#define __NR_get_kernel_syms 177
#define __NR_query_module 178
#define __NR_quotactl 179
#define __NR_nfsservctl 180
#define __NR_getpmsg 181
#define __NR_putpmsg 182
#define __NR_afs_syscall 183
#define __NR_tuxcall 184
#define __NR_security 185
#define __NR_gettid 186
#define __NR_readahead 187
#define __NR_setxattr 188
#define __NR_lsetxattr 189
#define __NR_fsetxattr 190
#define __NR_getxattr 191
#define __NR_lgetxattr 192
#define __NR_fgetxattr 193
#define __NR_listxattr 194
#define __NR_llistxattr 195
#define __NR_flistxattr 196
#define __NR_removexattr 197
#define __NR_lremovexattr 198
#define __NR_fremovexattr 199
#define __NR_tkill 200
#define __NR_time 201
#define __NR_futex 202
#define __NR_sched_setaffinity 203
#define __NR_sched_getaffinity 204
#define __NR_set_thread_area 205
#define __NR_io_setup 206
#define __NR_io_destroy 207
#define __NR_io_getevents 208
#define __NR_io_submit 209
#define __NR_io_cancel 210
#define __NR_get_thread_area 211
#define __NR_lookup_dcookie 212
#define __NR_epoll_create 213
#define __NR_epoll_ctl_old 214
#define __NR_epoll_wait_old 215
#define __NR_remap_file_pages 216
#define __NR_getdents64 217
#define __NR_set_tid_address 218
#define __NR_restart_syscall 219
#define __NR_semtimedop 220
#define __NR_fadvise64 221
#define __NR_timer_create 222
#define __NR_timer_settime 223
#define __NR_timer_gettime 224
#define __NR_timer_getoverrun 225
#define __NR_timer_delete 226
#define __NR_clock_settime 227
#define __NR_clock_gettime 228
#define __NR_clock_getres 229
#define __NR_clock_nanosleep 230
#define __NR_exit_group 231
#define __NR_epoll_wait 232
#define __NR_epoll_ctl 233
#define __NR_tgkill 234
#define __NR_utimes 235
#define __NR_vserver 236
#define __NR_mbind 237
#define __NR_set_mempolicy 238
#define __NR_get_mempolicy 239
#define __NR_mq_open 240
#define __NR_mq_unlink 241
#define __NR_mq_timedsend 242
#define __NR_mq_timedreceive 243
#define __NR_mq_notify 244
#define __NR_mq_getsetattr 245
#define __NR_kexec_load 246
#define __NR_waitid 247
#define __NR_add_key 248
#define __NR_request_key 249
#define __NR_keyctl 250
#define __NR_ioprio_set 251
#define __NR_ioprio_get 252
#define __NR_inotify_init 253
#define __NR_inotify_add_watch 254
#define __NR_inotify_rm_watch 255
#define __NR_migrate_pages 256
#define __NR_openat 257
#define __NR_mkdirat 258
#define __NR_mknodat 259
#define __NR_fchownat 260
#define __NR_futimesat 261
#define __NR_newfstatat 262
#define __NR_unlinkat 263
#define __NR_renameat 264
#define __NR_linkat 265
#define __NR_symlinkat 266
#define __NR_readlinkat 267
#define __NR_fchmodat 268
#define __NR_faccessat 269
#define __NR_pselect6 270
#define __NR_ppoll 271
#define __NR_unshare 272
#define __NR_set_robust_list 273
#define __NR_get_robust_list 274
#define __NR_splice 275
#define __NR_tee 276
#define __NR_sync_file_range 277
#define __NR_vmsplice 278
#define __NR_move_pages 279
#define __NR_utimensat 280
#define __NR_epoll_pwait 281
#define __NR_signalfd 282
#define __NR_timerfd_create 283
#define __NR_eventfd 284
#define __NR_fallocate 285
#define __NR_timerfd_settime 286
#define __NR_timerfd_gettime 287
#define __NR_accept4 288
#define __NR_signalfd4 289
#define __NR_eventfd2 290
#define __NR_epoll_create1 291
#define __NR_dup3 292
#define __NR_pipe2 293
#define __NR_inotify_init1 294
#define __NR_preadv 295
#define __NR_pwritev 296
#define __NR_rt_tgsigqueueinfo 297
#define __NR_perf_event_open 298
#define __NR_recvmmsg 299
#define __NR_fanotify_init 300
#define __NR_fanotify_mark 301
#define __NR_prlimit64 302
#define __NR_name_to_handle_at 303
#define __NR_open_by_handle_at 304
#define __NR_clock_adjtime 305
#define __NR_syncfs 306
#define __NR_sendmmsg 307
#define __NR_setns 308
#define __NR_getcpu 309
#define __NR_process_vm_readv 310
#define __NR_process_vm_writev 311
#define __NR_kcmp 312
#define __NR_finit_module 313
#define __NR_sched_setattr 314
#define __NR_sched_getattr 315
#define __NR_renameat2 316
#define __NR_seccomp 317
#define __NR_getrandom 318
#define __NR_memfd_create 319
#define __NR_kexec_file_load 320
#define __NR_bpf 321
#define __NR_execveat 322
#define __NR_userfaultfd 323
#define __NR_membarrier 324
#define __NR_mlock2 325
#define __NR_copy_file_range 326
#define __NR_preadv2 327
#define __NR_pwritev2 328
#define __NR_pkey_mprotect 329
#define __NR_pkey_alloc 330
#define __NR_pkey_free 331
#define __NR_statx 332
#define __NR_io_pgetevents 333
#define __NR_rseq 334
#define __NR_pidfd_send_signal 424
#define __NR_io_uring_setup 425
#define __NR_io_uring_enter 426
#define __NR_io_uring_register 427
#define __NR_open_tree 428
#define __NR_move_mount 429
#define __NR_fsopen 430
#define __NR_fsconfig 431
#define __NR_fsmount 432
#define __NR_fspick 433
#define __NR_pidfd_open 434
#define __NR_clone3 435
#define __NR_close_range 436
#define __NR_openat2 437
#define __NR_pidfd_getfd 438
#define __NR_faccessat2 439
#define __NR_process_madvise 440
#define __NR_epoll_pwait2 441
#define __NR_mount_setattr 442
#define __NR_landlock_create_ruleset 444
#define __NR_landlock_add_rule 445
#define __NR_landlock_restrict_self 446
#endif // !__FENNIX_KERNEL_LINUX_SYSCALLS_H__

9
syscalls/native.cpp
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@ -25,7 +25,6 @@
#include "../syscalls.h"
#include "../kernel.h"
#include "../ipc.h"
struct SyscallData
{
@ -34,16 +33,8 @@ struct SyscallData
int RequiredID;
};
using InterProcessCommunication::IPC;
using InterProcessCommunication::IPCID;
using Tasking::PCB;
using Tasking::TCB;
using Tasking::TaskState::Ready;
using Tasking::TaskState::Terminated;
using namespace Memory;
#define SysFrm SyscallsFrame
#if defined(a64)
typedef long arch_t;
#elif defined(a32)

15
syscalls/native/close.cpp
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@ -25,23 +25,8 @@
#include "../../syscalls.h"
#include "../../kernel.h"
#include "../../ipc.h"
using InterProcessCommunication::IPC;
using InterProcessCommunication::IPCID;
using Tasking::PCB;
using Tasking::TCB;
using Tasking::TaskState::Ready;
using Tasking::TaskState::Terminated;
using namespace Memory;
#define SysFrm SyscallsFrame
#if defined(a64)
typedef long arch_t;
#elif defined(a32)
typedef int arch_t;
#endif
/* https://pubs.opengroup.org/onlinepubs/009604499/functions/close.html */
int sys_close(SysFrm *,

33
syscalls/native/execve.cpp
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@ -26,36 +26,22 @@
#include "../../syscalls.h"
#include "../../kernel.h"
#include "../../ipc.h"
using InterProcessCommunication::IPC;
using InterProcessCommunication::IPCID;
using Tasking::PCB;
using Tasking::TCB;
using Tasking::TaskState::Ready;
using Tasking::TaskState::Terminated;
using vfs::RefNode;
using namespace Memory;
#define SysFrm SyscallsFrame
#if defined(a64)
typedef long arch_t;
#elif defined(a32)
typedef int arch_t;
#endif
/* https://pubs.opengroup.org/onlinepubs/9699919799/functions/exec.html */
int sys_execve(SysFrm *Frame, const char *path,
char *const argv[], char *const envp[])
{
PCB *pcb = thisProcess;
Memory::Virtual vmm(pcb->PageTable);
Virtual vmm = Virtual(pcb->PageTable);
if (path == nullptr ||
!vmm.Check((void *)path, Memory::US) ||
!vmm.Check((void *)argv, Memory::US) ||
!vmm.Check((void *)envp, Memory::US))
!vmm.Check((void *)path, US) ||
!vmm.Check((void *)argv, US) ||
!vmm.Check((void *)envp, US))
return -ENOENT;
const char *safe_path;
@ -65,7 +51,7 @@ int sys_execve(SysFrm *Frame, const char *path,
safe_argv = (char **)pcb->vma->RequestPages(TO_PAGES(MAX_ARG));
safe_envp = (char **)pcb->vma->RequestPages(TO_PAGES(MAX_ARG));
{
Memory::SwapPT swap(pcb->PageTable);
SwapPT swap(pcb->PageTable);
size_t len = strlen(path);
memset((void *)safe_path, 0, PAGE_SIZE);
memcpy((void *)safe_path, path, len);
@ -114,7 +100,7 @@ int sys_execve(SysFrm *Frame, const char *path,
#endif
RefNode *File = fs->Open(safe_path,
pcb->CurrentWorkingDirectory);
pcb->CurrentWorkingDirectory);
if (!File)
{
@ -193,7 +179,8 @@ int sys_execve(SysFrm *Frame, const char *path,
int ret = Execute::Spawn((char *)safe_path,
(const char **)safe_argv,
(const char **)safe_envp,
pcb->Parent, pcb->Info.Compatibility);
pcb->Parent, true,
pcb->Info.Compatibility);
if (ret < 0)
{
@ -205,8 +192,8 @@ int sys_execve(SysFrm *Frame, const char *path,
delete File;
Tasking::Task *ctx = pcb->GetContext();
ctx->Sleep(1000);
pcb->State = Tasking::Zombie;
pcb->ExitCode = 0;
pcb->SetState(Tasking::Zombie);
pcb->SetExitCode(0); /* FIXME: get process exit code */
while (true)
ctx->Yield();
__builtin_unreachable();

21
syscalls/native/exit.cpp
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@ -25,23 +25,9 @@
#include "../../syscalls.h"
#include "../../kernel.h"
#include "../../ipc.h"
using InterProcessCommunication::IPC;
using InterProcessCommunication::IPCID;
using Tasking::PCB;
using Tasking::TCB;
using Tasking::TaskState::Ready;
using Tasking::TaskState::Terminated;
using namespace Memory;
#define SysFrm SyscallsFrame
#if defined(a64)
typedef long arch_t;
#elif defined(a32)
typedef int arch_t;
#endif
using Tasking::TaskState::Zombie;
/* https://pubs.opengroup.org/onlinepubs/009604499/functions/exit.html */
__noreturn void sys_exit(SysFrm *, int status)
@ -53,9 +39,8 @@ __noreturn void sys_exit(SysFrm *, int status)
t->ID, status,
status < 0 ? -status : status);
t->ExitCode = status;
t->KeepTime = TimeManager->CalculateTarget(10, Time::Seconds);
t->State = Terminated;
t->SetState(Zombie);
t->SetExitCode(status);
while (true)
t->GetContext()->Yield();
__builtin_unreachable();

70
syscalls/native/fork.cpp
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@ -25,23 +25,26 @@
#include "../../syscalls.h"
#include "../../kernel.h"
#include "../../ipc.h"
using InterProcessCommunication::IPC;
using InterProcessCommunication::IPCID;
using Tasking::PCB;
using Tasking::TCB;
using Tasking::TaskState::Ready;
using Tasking::TaskState::Terminated;
using namespace Memory;
#define SysFrm SyscallsFrame
void sys_fork_return()
{
#if defined(a64)
typedef long arch_t;
asmv("movq $0, %rax\n"); /* Return 0 */
asmv("movq %r8, %rsp\n"); /* Restore stack pointer */
asmv("movq %r8, %rbp\n"); /* Restore base pointer */
asmv("swapgs\n"); /* Swap GS back to the user GS */
asmv("sti\n"); /* Enable interrupts */
asmv("sysretq\n"); /* Return to rcx address in user mode */
#elif defined(a32)
typedef int arch_t;
#warning "sys_fork not implemented for i386"
#endif
__builtin_unreachable();
}
/* https://pubs.opengroup.org/onlinepubs/009604499/functions/fork.html */
int sys_fork(SysFrm *Frame)
@ -54,15 +57,11 @@ int sys_fork(SysFrm *Frame)
PCB *Parent = thisThread->Parent;
TCB *Thread = thisThread;
void *ProcSymTable = nullptr;
if (Parent->ELFSymbolTable)
ProcSymTable = Parent->ELFSymbolTable->GetImage();
PCB *NewProcess =
TaskManager->CreateProcess(Parent,
Parent->Name,
Parent->Security.ExecutionMode,
ProcSymTable);
nullptr, true);
if (!NewProcess)
{
@ -70,7 +69,18 @@ int sys_fork(SysFrm *Frame)
return -EAGAIN;
}
NewProcess->IPC->Fork(Parent->IPC);
if (Parent->ELFSymbolTable &&
Parent->ELFSymbolTable->SymTableExists)
{
NewProcess->ELFSymbolTable = new SymbolResolver::Symbols(0);
foreach (auto sym in Parent->ELFSymbolTable->GetSymTable())
{
NewProcess->ELFSymbolTable->AddSymbol(sym.Address,
sym.FunctionName);
}
}
NewProcess->PageTable = Parent->PageTable->Fork();
TCB *NewThread =
TaskManager->CreateThread(NewProcess,
@ -92,50 +102,30 @@ int sys_fork(SysFrm *Frame)
TaskManager->UpdateFrame();
/* This if statement will overwrite
most of the registers except rcx
and r8-r15 */
if (thisThread->ID == NewThread->ID)
{
/* We can't just return 0; because the
gsTCB->SyscallStack is no
longer valid */
#if defined(a64)
asmv("movq $0, %rax\n"); /* Return 0 */
asmv("movq %r8, %rsp\n"); /* Restore stack pointer */
asmv("movq %r8, %rbp\n"); /* Restore base pointer */
asmv("swapgs\n"); /* Swap GS back to the user GS */
asmv("sti\n"); /* Enable interrupts */
asmv("sysretq\n"); /* Return to rcx address in user mode */
#elif defined(a32)
#warning "sys_fork not implemented for i386"
#endif
__builtin_unreachable();
}
memcpy(&NewThread->FPU, &Thread->FPU, sizeof(CPU::x64::FXState));
NewThread->FPU = Thread->FPU;
NewThread->Stack->Fork(Thread->Stack);
NewThread->Info.Architecture = Thread->Info.Architecture;
NewThread->Info.Compatibility = Thread->Info.Compatibility;
NewThread->Security.IsCritical = Thread->Security.IsCritical;
NewThread->Registers = Thread->Registers;
#if defined(a64)
NewThread->Registers.rip = (uintptr_t)sys_fork_return;
/* For sysretq */
NewThread->Registers.rcx = Frame->ReturnAddress;
NewThread->Registers.r8 = Frame->StackPointer;
#endif
if (Thread->Security.IsCritical)
NewThread->SetCritical(true);
#ifdef a86
NewThread->GSBase = NewThread->ShadowGSBase;
NewThread->ShadowGSBase = Thread->ShadowGSBase;
NewThread->FSBase = Thread->FSBase;
#endif
debug("ret addr: %#lx, stack: %#lx ip: %#lx", Frame->ReturnAddress,
Frame->StackPointer, (uintptr_t)sys_fork_return);
debug("Forked thread \"%s\"(%d) to \"%s\"(%d)",
Thread->Name, Thread->ID,
NewThread->Name, NewThread->ID);
NewThread->State = Ready;
NewThread->SetState(Ready);
return (int)NewProcess->ID;
}

15
syscalls/native/lseek.cpp
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@ -25,23 +25,8 @@
#include "../../syscalls.h"
#include "../../kernel.h"
#include "../../ipc.h"
using InterProcessCommunication::IPC;
using InterProcessCommunication::IPCID;
using Tasking::PCB;
using Tasking::TCB;
using Tasking::TaskState::Ready;
using Tasking::TaskState::Terminated;
using namespace Memory;
#define SysFrm SyscallsFrame
#if defined(a64)
typedef long arch_t;
#elif defined(a32)
typedef int arch_t;
#endif
/* https://pubs.opengroup.org/onlinepubs/009604499/functions/lseek.html */
off_t sys_lseek(SysFrm *, int fildes,

18
syscalls/native/mmap.cpp
View File

@ -24,24 +24,10 @@
#include "../../syscalls.h"
#include "../../kernel.h"
#include "../../ipc.h"
using InterProcessCommunication::IPC;
using InterProcessCommunication::IPCID;
using Tasking::PCB;
using Tasking::TCB;
using Tasking::TaskState::Ready;
using Tasking::TaskState::Terminated;
using namespace Memory;
#define SysFrm SyscallsFrame
#if defined(a64)
typedef long arch_t;
#elif defined(a32)
typedef int arch_t;
#endif
/* https://pubs.opengroup.org/onlinepubs/009604499/functions/mmap.html */
void *sys_mmap(SysFrm *,
void *addr, size_t len,
@ -103,8 +89,8 @@ void *sys_mmap(SysFrm *,
(!m_Shared && !m_Private))
return (void *)-EINVAL;
Tasking::PCB *pcb = thisProcess;
Memory::VirtualMemoryArea *vma = pcb->vma;
PCB *pcb = thisProcess;
VirtualMemoryArea *vma = pcb->vma;
intptr_t ret = (intptr_t)vma->CreateCoWRegion(addr, len,
p_Read, p_Write, p_Exec,
m_Fixed, m_Shared);

22
syscalls/native/mprotect.cpp
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@ -25,24 +25,10 @@
#include "../../syscalls.h"
#include "../../kernel.h"
#include "../../ipc.h"
using InterProcessCommunication::IPC;
using InterProcessCommunication::IPCID;
using Tasking::PCB;
using Tasking::TCB;
using Tasking::TaskState::Ready;
using Tasking::TaskState::Terminated;
using namespace Memory;
#define SysFrm SyscallsFrame
#if defined(a64)
typedef long arch_t;
#elif defined(a32)
typedef int arch_t;
#endif
/* https://pubs.opengroup.org/onlinepubs/009604499/functions/mprotect.html */
int sys_mprotect(SysFrm *,
void *addr, size_t len, int prot)
@ -58,16 +44,16 @@ int sys_mprotect(SysFrm *,
bool p_Write = prot & sc_PROT_WRITE;
// bool p_Exec = prot & sc_PROT_EXEC;
Tasking::PCB *pcb = thisProcess;
Memory::Virtual vmm = Memory::Virtual(pcb->PageTable);
PCB *pcb = thisProcess;
Virtual vmm = Virtual(pcb->PageTable);
for (uintptr_t i = uintptr_t(addr);
i < uintptr_t(addr) + len;
i += PAGE_SIZE)
{
if (likely(!vmm.Check((void *)i, Memory::G)))
if (likely(!vmm.Check((void *)i, G)))
{
Memory::PageTableEntry *pte = vmm.GetPTE(addr);
PageTableEntry *pte = vmm.GetPTE(addr);
if (!pte->Present ||
(!pte->UserSupervisor && p_Read) ||
(!pte->ReadWrite && p_Write))

24
syscalls/native/munmap.cpp
View File

@ -25,24 +25,10 @@
#include "../../syscalls.h"
#include "../../kernel.h"
#include "../../ipc.h"
using InterProcessCommunication::IPC;
using InterProcessCommunication::IPCID;
using Tasking::PCB;
using Tasking::TCB;
using Tasking::TaskState::Ready;
using Tasking::TaskState::Terminated;
using namespace Memory;
#define SysFrm SyscallsFrame
#if defined(a64)
typedef long arch_t;
#elif defined(a32)
typedef int arch_t;
#endif
/* https://pubs.opengroup.org/onlinepubs/009604499/functions/munmap.html */
int sys_munmap(SysFrm *,
void *addr, size_t len)
@ -53,16 +39,16 @@ int sys_munmap(SysFrm *,
if (len == 0)
return -EINVAL;
Tasking::PCB *pcb = thisProcess;
Memory::VirtualMemoryArea *vma = pcb->vma;
Memory::Virtual vmm = Memory::Virtual(pcb->PageTable);
PCB *pcb = thisProcess;
VirtualMemoryArea *vma = pcb->vma;
Virtual vmm = Virtual(pcb->PageTable);
for (uintptr_t i = uintptr_t(addr);
i < uintptr_t(addr) + len;
i += PAGE_SIZE)
{
if (likely(!vmm.Check((void *)i, Memory::G)))
vmm.Remap((void *)i, (void *)i, Memory::P | Memory::RW);
if (likely(!vmm.Check((void *)i, G)))
vmm.Remap((void *)i, (void *)i, P | RW);
else
warn("%p is a global page", (void *)i);
}

22
syscalls/native/open.cpp
View File

@ -25,37 +25,23 @@
#include "../../syscalls.h"
#include "../../kernel.h"
#include "../../ipc.h"
using InterProcessCommunication::IPC;
using InterProcessCommunication::IPCID;
using Tasking::PCB;
using Tasking::TCB;
using Tasking::TaskState::Ready;
using Tasking::TaskState::Terminated;
using namespace Memory;
#define SysFrm SyscallsFrame
#if defined(a64)
typedef long arch_t;
#elif defined(a32)
typedef int arch_t;
#endif
/* https://pubs.opengroup.org/onlinepubs/009604499/functions/open.html */
int sys_open(SysFrm *,
const char *path,
int oflag, mode_t mode)
{
const char *safe_path = nullptr;
Tasking::PCB *pcb = thisProcess;
Memory::SmartHeap sh(512, pcb->vma);
PCB *pcb = thisProcess;
SmartHeap sh(512, pcb->vma);
safe_path = (const char *)sh.Get();
{
Memory::SwapPT swap(pcb->PageTable);
SwapPT swap(pcb->PageTable);
size_t len = strlen(path);
memcpy((void *)safe_path, path, len);
memcpy((void *)safe_path, path, MAX(len, size_t(511)));
}
function("%s, %d, %d", safe_path, oflag, mode);

20
syscalls/native/read.cpp
View File

@ -25,31 +25,17 @@
#include "../../syscalls.h"
#include "../../kernel.h"
#include "../../ipc.h"
using InterProcessCommunication::IPC;
using InterProcessCommunication::IPCID;
using Tasking::PCB;
using Tasking::TCB;
using Tasking::TaskState::Ready;
using Tasking::TaskState::Terminated;
using namespace Memory;
#define SysFrm SyscallsFrame
#if defined(a64)
typedef long arch_t;
#elif defined(a32)
typedef int arch_t;
#endif
/* https://pubs.opengroup.org/onlinepubs/009604499/functions/read.html */
ssize_t sys_read(SysFrm *, int fildes,
void *buf, size_t nbyte)
{
void *safe_buf = nullptr;
Tasking::PCB *pcb = thisProcess;
Memory::SmartHeap sh(nbyte, pcb->vma);
PCB *pcb = thisProcess;
SmartHeap sh(nbyte, pcb->vma);
safe_buf = sh.Get();
function("%d, %p, %d", fildes, buf, nbyte);
@ -61,7 +47,7 @@ ssize_t sys_read(SysFrm *, int fildes,
return ret;
{
Memory::SwapPT swap(pcb->PageTable);
SwapPT swap(pcb->PageTable);
memcpy(buf, safe_buf, nbyte);
}
return ret;

81
syscalls/native/readlink.cpp Normal file
View File

@ -0,0 +1,81 @@
/*
This file is part of Fennix Kernel.
Fennix Kernel is free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.
Fennix Kernel is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
*/
#include <syscalls.hpp>
#include <memory.hpp>
#include <utsname.h>
#include <lock.hpp>
#include <exec.hpp>
#include <errno.h>
#include <debug.h>
#include "../../syscalls.h"
#include "../../kernel.h"
using Tasking::PCB;
using namespace Memory;
/* https://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html */
ssize_t sys_readlink(SysFrm *, const char *path, char *buf,
size_t bufsize)
{
if (!path || !buf)
return -EINVAL;
if (bufsize > PAGE_SIZE)
{
warn("bufsize is too large: %ld", bufsize);
return -EINVAL;
}
PCB *pcb = thisProcess;
Memory::Virtual vmm(pcb->PageTable);
if (!vmm.Check((void *)buf, Memory::US))
{
warn("Invalid address %#lx", buf);
return -EFAULT;
}
const char *pPath = pcb->PageTable->Get(path);
char *pBuf = pcb->PageTable->Get(buf);
function("%s %#lx %ld", pPath, buf, bufsize);
vfs::FileDescriptorTable *fdt = pcb->FileDescriptors;
int fd = fdt->_open(pPath, O_RDONLY, 0);
if (fd < 0)
return -ENOENT;
vfs::FileDescriptorTable::Fildes fildes = fdt->GetDescriptor(fd);
vfs::Node *node = fildes.Handle->node;
fdt->_close(fd);
if (node->Type != vfs::NodeType::SYMLINK)
return -EINVAL;
if (!node->Symlink)
{
warn("Symlink null for \"%s\"?", pPath);
return -EINVAL;
}
size_t len = strlen(node->Symlink);
if (len > bufsize)
len = bufsize;
strncpy(pBuf, node->Symlink, len);
return len;
}

69
syscalls/native/uname.cpp Normal file
View File

@ -0,0 +1,69 @@
/*
This file is part of Fennix Kernel.
Fennix Kernel is free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.
Fennix Kernel is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
*/
#include <syscalls.hpp>
#include <memory.hpp>
#include <utsname.h>
#include <lock.hpp>
#include <exec.hpp>
#include <errno.h>
#include <debug.h>
#include "../../syscalls.h"
#include "../../kernel.h"
using Tasking::PCB;
using namespace Memory;
/* https://pubs.opengroup.org/onlinepubs/9699919799/functions/uname.html */
int sys_uname(SysFrm *, struct utsname *buf)
{
assert(sizeof(struct utsname) < PAGE_SIZE);
Tasking::PCB *pcb = thisProcess;
Memory::Virtual vmm(pcb->PageTable);
if (!vmm.Check(buf, Memory::US))
{
warn("Invalid address %#lx", buf);
return -EFAULT;
}
auto pBuf = pcb->PageTable->Get(buf);
struct utsname uname =
{
/* TODO: This shouldn't be hardcoded */
.sysname = KERNEL_NAME,
.nodename = "fennix",
.release = KERNEL_VERSION,
.version = KERNEL_VERSION,
#if defined(a64)
.machine = "x86_64",
#elif defined(a32)
.machine = "i386",
#elif defined(aa64)
.machine = "arm64",
#elif defined(aa32)
.machine = "arm",
#endif
};
memcpy(pBuf, &uname, sizeof(struct utsname));
return 0;
}

20
syscalls/native/write.cpp
View File

@ -25,34 +25,20 @@
#include "../../syscalls.h"
#include "../../kernel.h"
#include "../../ipc.h"
using InterProcessCommunication::IPC;
using InterProcessCommunication::IPCID;
using Tasking::PCB;
using Tasking::TCB;
using Tasking::TaskState::Ready;
using Tasking::TaskState::Terminated;
using namespace Memory;
#define SysFrm SyscallsFrame
#if defined(a64)
typedef long arch_t;
#elif defined(a32)
typedef int arch_t;
#endif
/* https://pubs.opengroup.org/onlinepubs/009604499/functions/write.html */
ssize_t sys_write(SysFrm *, int fildes,
const void *buf, size_t nbyte)
{
const void *safe_buf = nullptr;
Tasking::PCB *pcb = thisProcess;
Memory::SmartHeap sh(nbyte, pcb->vma);
PCB *pcb = thisProcess;
SmartHeap sh(nbyte, pcb->vma);
safe_buf = sh.Get();
{
Memory::SwapPT swap(pcb->PageTable);
SwapPT swap(pcb->PageTable);
memcpy((void *)safe_buf, buf, nbyte);
}

6
syscalls/syscalls.cpp
View File

@ -24,7 +24,7 @@
class AutoSwitchPageTable
{
private:
uintptr_t Original;
void *Original;
public:
AutoSwitchPageTable()
@ -37,10 +37,14 @@ public:
:
: "r"(KernelPageTable));
#endif
debug(" + %#lx %s(%d)", Original,
thisProcess->Name, thisProcess->ID);
}
~AutoSwitchPageTable()
{
debug("- %#lx %s(%d)", Original,
thisProcess->Name, thisProcess->ID);
#if defined(a86)
asmv("mov %0, %%cr3"
: