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phunix/minix/include/minix/callnr.h
David van Moolenbroek c38dbb97aa Prepare for switch to native BSD socket API 
Currently, the BSD socket API is implemented in libc, translating the
API calls to character driver operations underneath.  This approach
has several issues:

- it is inefficient, as most character driver operations are specific
  to the socket type, thus requiring that each operation start by
  bruteforcing the socket protocol family and type of the given file
  descriptor using several system calls;
- it requires that libc itself be changed every time system support
  for a new protocol is added;
- various parts of the libc implementations violate the asynchronous
  signal safety POSIX requirements.

In order to resolve all these issues at once, the plan is to turn the
BSD socket calls into system calls, thus making the BSD socket API the
"native" ABI, removing the complexity from libc and instead letting
VFS deal with the socket calls.

The overall change is going to break all networking functionality. In
order to smoothen the transition, this patch introduces the fifteen
new BSD socket system calls, and makes libc try these first before
falling back on the old behavior.  For now, the VFS implementations of
the new calls fail such that libc will always use the fallback cases.
Later on, when we introduce the actual implementation of the native
BSD socket calls, all statically linked programs will automatically
use the new ABI, thus limiting actual application breakage.

In other words: by itself, this patch does nothing, except add a bit
of transitional overhead that will disappear in the future.  The
largest part of the patch is concerned with adding full support for
the new BSD socket system calls to trace(1) - this early addition has
the advantage of making system call tracing output of several socket
calls much more readable already.

Both the system call interfaces and the trace(1) support have already
been tested using code that will be committed later on.

Change-Id: I3460812be50c78be662d857f9d3d6840f3ca917f
2016-02-23 14:34:05 +00:00

140 lines
4.8 KiB
C
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/* This header file defines the calls to PM and VFS. */
#ifndef _MINIX_CALLNR_H
#define _MINIX_CALLNR_H
/*===========================================================================*
* Calls to PM *
*===========================================================================*/
#define PM_BASE 0x000
#define IS_PM_CALL(type) (((type) & ~0xff) == PM_BASE)
/* Message type 0 is traditionally reserved. */
#define PM_EXIT (PM_BASE + 1)
#define PM_FORK (PM_BASE + 2)
#define PM_WAIT4 (PM_BASE + 3)
#define PM_GETPID (PM_BASE + 4)
#define PM_SETUID (PM_BASE + 5)
#define PM_GETUID (PM_BASE + 6)
#define PM_STIME (PM_BASE + 7)
#define PM_PTRACE (PM_BASE + 8)
#define PM_SETGROUPS (PM_BASE + 9)
#define PM_GETGROUPS (PM_BASE + 10)
#define PM_KILL (PM_BASE + 11)
#define PM_SETGID (PM_BASE + 12)
#define PM_GETGID (PM_BASE + 13)
#define PM_EXEC (PM_BASE + 14)
#define PM_SETSID (PM_BASE + 15)
#define PM_GETPGRP (PM_BASE + 16)
#define PM_ITIMER (PM_BASE + 17)
#define PM_GETMCONTEXT (PM_BASE + 18)
#define PM_SETMCONTEXT (PM_BASE + 19)
#define PM_SIGACTION (PM_BASE + 20)
#define PM_SIGSUSPEND (PM_BASE + 21)
#define PM_SIGPENDING (PM_BASE + 22)
#define PM_SIGPROCMASK (PM_BASE + 23)
#define PM_SIGRETURN (PM_BASE + 24)
#define PM_SYSUNAME (PM_BASE + 25) /* obsolete */
#define PM_GETPRIORITY (PM_BASE + 26)
#define PM_SETPRIORITY (PM_BASE + 27)
#define PM_GETTIMEOFDAY (PM_BASE + 28)
#define PM_SETEUID (PM_BASE + 29)
#define PM_SETEGID (PM_BASE + 30)
#define PM_ISSETUGID (PM_BASE + 31)
#define PM_GETSID (PM_BASE + 32)
#define PM_CLOCK_GETRES (PM_BASE + 33)
#define PM_CLOCK_GETTIME (PM_BASE + 34)
#define PM_CLOCK_SETTIME (PM_BASE + 35)
#define PM_GETRUSAGE (PM_BASE + 36)
#define PM_REBOOT (PM_BASE + 37)
#define PM_SVRCTL (PM_BASE + 38)
#define PM_SPROF (PM_BASE + 39)
#define PM_PROCEVENTMASK (PM_BASE + 40)
#define PM_SRV_FORK (PM_BASE + 41)
#define PM_SRV_KILL (PM_BASE + 42)
#define PM_EXEC_NEW (PM_BASE + 43)
#define PM_EXEC_RESTART (PM_BASE + 44)
#define PM_GETEPINFO (PM_BASE + 45)
#define PM_GETPROCNR (PM_BASE + 46)
#define PM_GETSYSINFO (PM_BASE + 47)
#define NR_PM_CALLS 48 /* highest number from base plus one */
/*===========================================================================*
* Calls to VFS *
*===========================================================================*/
#define VFS_BASE 0x100
#define IS_VFS_CALL(type) (((type) & ~0xff) == VFS_BASE)
#define VFS_READ (VFS_BASE + 0)
#define VFS_WRITE (VFS_BASE + 1)
#define VFS_LSEEK (VFS_BASE + 2)
#define VFS_OPEN (VFS_BASE + 3)
#define VFS_CREAT (VFS_BASE + 4)
#define VFS_CLOSE (VFS_BASE + 5)
#define VFS_LINK (VFS_BASE + 6)
#define VFS_UNLINK (VFS_BASE + 7)
#define VFS_CHDIR (VFS_BASE + 8)
#define VFS_MKDIR (VFS_BASE + 9)
#define VFS_MKNOD (VFS_BASE + 10)
#define VFS_CHMOD (VFS_BASE + 11)
#define VFS_CHOWN (VFS_BASE + 12)
#define VFS_MOUNT (VFS_BASE + 13)
#define VFS_UMOUNT (VFS_BASE + 14)
#define VFS_ACCESS (VFS_BASE + 15)
#define VFS_SYNC (VFS_BASE + 16)
#define VFS_RENAME (VFS_BASE + 17)
#define VFS_RMDIR (VFS_BASE + 18)
#define VFS_SYMLINK (VFS_BASE + 19)
#define VFS_READLINK (VFS_BASE + 20)
#define VFS_STAT (VFS_BASE + 21)
#define VFS_FSTAT (VFS_BASE + 22)
#define VFS_LSTAT (VFS_BASE + 23)
#define VFS_IOCTL (VFS_BASE + 24)
#define VFS_FCNTL (VFS_BASE + 25)
#define VFS_PIPE2 (VFS_BASE + 26)
#define VFS_UMASK (VFS_BASE + 27)
#define VFS_CHROOT (VFS_BASE + 28)
#define VFS_GETDENTS (VFS_BASE + 29)
#define VFS_SELECT (VFS_BASE + 30)
#define VFS_FCHDIR (VFS_BASE + 31)
#define VFS_FSYNC (VFS_BASE + 32)
#define VFS_TRUNCATE (VFS_BASE + 33)
#define VFS_FTRUNCATE (VFS_BASE + 34)
#define VFS_FCHMOD (VFS_BASE + 35)
#define VFS_FCHOWN (VFS_BASE + 36)
#define VFS_UTIMENS (VFS_BASE + 37)
#define VFS_VMCALL (VFS_BASE + 38)
#define VFS_GETVFSSTAT (VFS_BASE + 39)
#define VFS_STATVFS1 (VFS_BASE + 40)
#define VFS_FSTATVFS1 (VFS_BASE + 41)
#define VFS_GETRUSAGE (VFS_BASE + 42) /* obsolete */
#define VFS_SVRCTL (VFS_BASE + 43)
#define VFS_GCOV_FLUSH (VFS_BASE + 44)
#define VFS_MAPDRIVER (VFS_BASE + 45)
#define VFS_COPYFD (VFS_BASE + 46)
#define VFS_CHECKPERMS (VFS_BASE + 47)
#define VFS_GETSYSINFO (VFS_BASE + 48)
#define VFS_SOCKET (VFS_BASE + 49)
#define VFS_SOCKETPAIR (VFS_BASE + 50)
#define VFS_BIND (VFS_BASE + 51)
#define VFS_CONNECT (VFS_BASE + 52)
#define VFS_LISTEN (VFS_BASE + 53)
#define VFS_ACCEPT (VFS_BASE + 54)
#define VFS_SENDTO (VFS_BASE + 55)
#define VFS_SENDMSG (VFS_BASE + 56)
#define VFS_RECVFROM (VFS_BASE + 57)
#define VFS_RECVMSG (VFS_BASE + 58)
#define VFS_SETSOCKOPT (VFS_BASE + 59)
#define VFS_GETSOCKOPT (VFS_BASE + 60)
#define VFS_GETSOCKNAME (VFS_BASE + 61)
#define VFS_GETPEERNAME (VFS_BASE + 62)
#define VFS_SHUTDOWN (VFS_BASE + 63)
#define NR_VFS_CALLS 64 /* highest number from base plus one */
#endif /* !_MINIX_CALLNR_H */
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