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Kernel: Improve syscall handling

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Syscalls are now called from a list of function pointers
This commit is contained in:
Bananymous
2024-02-12 21:47:40 +02:00
parent 78ef7e804f
commit 9314528b9b
7 changed files with 97 additions and 287 deletions
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2
libc/dirent.cpp
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@@ -79,7 +79,7 @@ struct dirent* readdir(DIR* dirp)
return &dirp->current->dirent;
}
if (syscall(SYS_READ_DIR_ENTRIES, dirp->fd, dirp->buffer, dirp->buffer_size) == -1)
if (syscall(SYS_READ_DIR, dirp->fd, dirp->buffer, dirp->buffer_size) == -1)
return nullptr;
if (dirp->buffer->entry_count == 0)

143
libc/include/sys/syscall.h
View File

@@ -5,73 +5,82 @@
__BEGIN_DECLS
#define SYS_EXIT 1
#define SYS_READ 2
#define SYS_WRITE 3
#define SYS_TERMID 4
#define SYS_CLOSE 5
#define SYS_OPEN 6
#define SYS_OPENAT 7
#define SYS_SEEK 11
#define SYS_TELL 12
#define SYS_GET_TERMIOS 13
#define SYS_SET_TERMIOS 14
#define SYS_FORK 15
#define SYS_EXEC 16
#define SYS_SLEEP 17
#define SYS_WAIT 18
#define SYS_FSTAT 19
#define SYS_READ_DIR_ENTRIES 21
#define SYS_SET_UID 22
#define SYS_SET_GID 23
#define SYS_SET_EUID 24
#define SYS_SET_EGID 25
#define SYS_SET_REUID 26
#define SYS_SET_REGID 27
#define SYS_GET_UID 28
#define SYS_GET_GID 29
#define SYS_GET_EUID 30
#define SYS_GET_EGID 31
#define SYS_GET_PWD 32
#define SYS_SET_PWD 33
#define SYS_CLOCK_GETTIME 34
#define SYS_PIPE 35
#define SYS_DUP 36
#define SYS_DUP2 37
#define SYS_KILL 39
#define SYS_SIGNAL 40
#define SYS_TCSETPGRP 42
#define SYS_GET_PID 43
#define SYS_GET_PGID 44
#define SYS_SET_PGID 45
#define SYS_FCNTL 46
#define SYS_NANOSLEEP 47
#define SYS_FSTATAT 48
#define SYS_STAT 49 // stat/lstat
#define SYS_SYNC 50
#define SYS_MMAP 51
#define SYS_MUNMAP 52
#define SYS_TTY_CTRL 53
#define SYS_POWEROFF 54
#define SYS_CHMOD 55
#define SYS_CREATE 56 // creat, mkfifo
#define SYS_CREATE_DIR 57 // mkdir
#define SYS_UNLINK 58
#define SYS_READLINK 59
#define SYS_READLINKAT 60
#define SYS_MSYNC 61
#define SYS_PREAD 62
#define SYS_CHOWN 63
#define SYS_LOAD_KEYMAP 64
#define SYS_SOCKET 65
#define SYS_BIND 66
#define SYS_SENDTO 67
#define SYS_RECVFROM 68
#define SYS_IOCTL 69
#define SYS_ACCEPT 70
#define SYS_CONNECT 71
#define SYS_LISTEN 72
#define SYS_PSELECT 73
#define __SYSCALL_LIST(O) \
O(SYS_EXIT, exit) \
O(SYS_READ, read) \
O(SYS_WRITE, write) \
O(SYS_TERMID, termid) \
O(SYS_CLOSE, close) \
O(SYS_OPEN, open) \
O(SYS_OPENAT, openat) \
O(SYS_SEEK, seek) \
O(SYS_TELL, tell) \
O(SYS_GET_TERMIOS, gettermios) \
O(SYS_SET_TERMIOS, settermios) \
O(SYS_FORK, fork) \
O(SYS_EXEC, exec) \
O(SYS_SLEEP, sleep) \
O(SYS_WAIT, wait) \
O(SYS_FSTAT, fstat) \
O(SYS_READ_DIR, readdir) \
O(SYS_SET_UID, setuid) \
O(SYS_SET_GID, setgid) \
O(SYS_SET_EUID, seteuid) \
O(SYS_SET_EGID, setegid) \
O(SYS_SET_REUID, setreuid) \
O(SYS_SET_REGID, setregid) \
O(SYS_GET_UID, getuid) \
O(SYS_GET_GID, getgid) \
O(SYS_GET_EUID, geteuid) \
O(SYS_GET_EGID, getegid) \
O(SYS_GET_PWD, getpwd) \
O(SYS_SET_PWD, setpwd) \
O(SYS_CLOCK_GETTIME, clock_gettime) \
O(SYS_PIPE, pipe) \
O(SYS_DUP, dup) \
O(SYS_DUP2, dup2) \
O(SYS_KILL, kill) \
O(SYS_SIGNAL, signal) \
O(SYS_TCSETPGRP, tcsetpgrp) \
O(SYS_GET_PID, getpid) \
O(SYS_GET_PGID, getpgid) \
O(SYS_SET_PGID, setpgid) \
O(SYS_FCNTL, fcntl) \
O(SYS_NANOSLEEP, nanosleep) \
O(SYS_FSTATAT, fstatat) \
O(SYS_STAT, stat) \
O(SYS_SYNC, sync) \
O(SYS_MMAP, mmap) \
O(SYS_MUNMAP, munmap) \
O(SYS_TTY_CTRL, tty_ctrl) \
O(SYS_POWEROFF, poweroff) \
O(SYS_CHMOD, chmod) \
O(SYS_CREATE, create) \
O(SYS_CREATE_DIR, create_dir) \
O(SYS_UNLINK, unlink) \
O(SYS_READLINK, readlink) \
O(SYS_READLINKAT, readlinkat) \
O(SYS_MSYNC, msync) \
O(SYS_PREAD, pread) \
O(SYS_CHOWN, chown) \
O(SYS_LOAD_KEYMAP, load_keymap) \
O(SYS_SOCKET, socket) \
O(SYS_BIND, bind) \
O(SYS_SENDTO, sendto) \
O(SYS_RECVFROM, recvfrom) \
O(SYS_IOCTL, ioctl) \
O(SYS_ACCEPT, accept) \
O(SYS_CONNECT, connect) \
O(SYS_LISTEN, listen) \
O(SYS_PSELECT, pselect) \
enum Syscall
{
#define O(enum, name) enum,
__SYSCALL_LIST(O)
#undef O
__SYSCALL_COUNT
};
__END_DECLS