eonix/include/kernel/syscall.hpp

#pragma once

#include <string>
#include <vector>

#include <bits/alltypes.h>
#include <poll.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/utsname.h>
#include <time.h>

#include <types/types.h>

#include <kernel/interrupt.hpp>
#include <kernel/signal.hpp>
#include <kernel/user/thread_local.hpp>

#define SYSCALL64_ARG1(type, name) type name = (type)((data)->head.s_regs.rdi)
#define SYSCALL64_ARG2(type, name) type name = (type)((data)->head.s_regs.rsi)
#define SYSCALL64_ARG3(type, name) type name = (type)((data)->head.s_regs.rdx)
#define SYSCALL64_ARG4(type, name) type name = (type)((data)->head.s_regs.r10)
#define SYSCALL64_ARG5(type, name) type name = (type)((data)->head.s_regs.r8)
#define SYSCALL64_ARG6(type, name) type name = (type)((data)->head.s_regs.r9)

namespace kernel {
void init_syscall_table();

void handle_syscall32(int no, interrupt_stack* data, mmx_registers* mmxregs);
void handle_syscall64(int no, interrupt_stack* data, mmx_registers* mmxregs);

namespace syscall {
    // in fileops.cc
    ssize_t do_write(int fd, const char __user* buf, size_t n);
    ssize_t do_read(int fd, char __user* buf, size_t n);
    int do_close(int fd);
    int do_dup(int old_fd);
    int do_dup2(int old_fd, int new_fd);
    int do_pipe(int __user* pipefd);
    ssize_t do_getdents(int fd, char __user* buf, size_t cnt);
    ssize_t do_getdents64(int fd, char __user* buf, size_t cnt);
    int do_open(const char __user* path, int flags, mode_t mode);
    int do_symlink(const char __user* target, const char __user* linkpath);
    int do_readlink(const char __user* pathname, char __user* buf,
                    size_t buf_size);
    int do_ioctl(int fd, unsigned long request, uintptr_t arg3);
    ssize_t do_readv(int fd, const iovec* iov, int iovcnt);
    ssize_t do_writev(int fd, const iovec* iov, int iovcnt);
    off_t do_lseek(int fd, off_t offset, int whence);
    uintptr_t do_mmap_pgoff(uintptr_t addr, size_t len, int prot, int flags,
                            int fd, off_t pgoffset);
    int do_munmap(uintptr_t addr, size_t len);
    ssize_t do_sendfile(int out_fd, int in_fd, off_t __user* offset,
                        size_t count);
    int do_statx(int dirfd, const char __user* path, int flags,
                 unsigned int mask, statx __user* statxbuf);
    int do_fcntl(int fd, int cmd, unsigned long arg);
    int do_poll(pollfd __user* fds, nfds_t nfds, int timeout);
    int do_mknod(const char __user* pathname, mode_t mode, dev_t dev);
    int do_access(const char __user* pathname, int mode);
    int do_unlink(const char __user* pathname);
    int do_truncate(const char __user* pathname, long length);
    int do_mkdir(const char __user* pathname, mode_t mode);
    int do_socket(int domain, int type, int protocol);

    // in procops.cc
    int do_chdir(const char __user* path);
    [[noreturn]] int do_exit(int status);
    int do_waitpid(pid_t waitpid, int __user* arg1, int options);
    pid_t do_getsid(pid_t pid);
    pid_t do_setsid();
    pid_t do_getpgid(pid_t pid);
    int do_setpgid(pid_t pid, pid_t pgid);
    int do_set_thread_area(user::user_desc __user* ptr);
    pid_t do_set_tid_address(int __user* tidptr);
    int do_prctl(int option, uintptr_t arg2);
    int do_arch_prctl(int option, uintptr_t arg2);
    pid_t do_getpid();
    pid_t do_getppid();
    uid_t do_getuid();
    uid_t do_geteuid();
    gid_t do_getgid();
    pid_t do_gettid();
    int do_getcwd(char __user* buf, size_t buf_size);
    uintptr_t do_brk(uintptr_t addr);
    int do_umask(mode_t mask);
    int do_kill(pid_t pid, int sig);
    int do_tkill(pid_t pid, int sig);
    int do_rt_sigprocmask(int how, const kernel::sigmask_type __user* set,
                          kernel::sigmask_type __user* oldset,
                          size_t sigsetsize);
    int do_rt_sigaction(int signum, const sigaction __user* act,
                        sigaction __user* oldact, size_t sigsetsize);
    int do_newuname(new_utsname __user* buf);

    struct execve_retval {
        uintptr_t ip;
        uintptr_t sp;
        int status;
    };

    execve_retval do_execve(const std::string& exec,
                            const std::vector<std::string>& args,
                            const std::vector<std::string>& envs);

    // in mount.cc
    int do_mount(const char __user* source, const char __user* target,
                 const char __user* fstype, unsigned long flags,
                 const void __user* _fsdata);

    // in infoops.cc
    int do_clock_gettime(clockid_t clk_id, timespec __user* tp);
    int do_gettimeofday(timeval __user* tv, void __user* tz);

} // namespace syscall

} // namespace kernel