minix/lib/libc/sys-minix/svrctl.c
David van Moolenbroek 24ec0d73b5 Clean up interface to PM and VFS
- introduce new call numbers, names, and field aliases;
- initialize request messages to zero for all ABI calls;
- format callnr.h in the same way as com.h;
- redo call tables in both servers;
- remove param.h namespace pollution in the servers;
- make brk(2) go to VM directly, rather than through PM;
- remove obsolete BRK, UTIME, and WAIT calls;
- clean up path copying routine in VFS;
- move remaining system calls from libminlib to libc;
- correct some errno-related mistakes in libc routines.

Change-Id: I2d8ec5d061cd7e0b30c51ffd77aa72ebf84e2565
2014-03-01 09:05:01 +01:00

30 lines
618 B
C

/* svrctl() - special server control functions. Author: Kees J. Bot
* 24 Apr 1994
*/
#include <lib.h>
#include <stdio.h>
#include <string.h>
#include <sys/svrctl.h>
int svrctl(int request, void *argp)
{
message m;
memset(&m, 0, sizeof(m));
m.SVRCTL_REQ = request;
m.SVRCTL_ARG = argp;
switch ((request >> 8) & 0xFF) {
case 'M':
case 'S':
/* PM handles calls for itself and the kernel. */
return _syscall(PM_PROC_NR, PM_SVRCTL, &m);
case 'F':
case 'I':
/* VFS handles calls for itself and inet. */
return _syscall(VFS_PROC_NR, VFS_SVRCTL, &m);
default:
errno = EINVAL;
return -1;
}
}