* implementations. See <minix/vfsif.h>
*/
-/*===========================================================================*
- * Messages used from VM to VFS *
- *===========================================================================*/
-
-/* Requests sent by VM to VFS, done on behalf of a user process. */
-#define VM_VFS_BASE 0xB00
-#define VM_VFS_OPEN (VM_VFS_BASE+0) /* open() on behalf of user process. */
-# define VMVO_NAME_GRANT m2_i1 /* 0-terminated */
-# define VMVO_NAME_LENGTH m2_i2 /* name length including 0 */
-# define VMVO_FLAGS m2_i3
-# define VMVO_MODE m2_l1
-# define VMVO_ENDPOINT m2_l2
-#define VM_VFS_MMAP (VM_VFS_BASE+1) /* mmap() */
-#define VM_VFS_CLOSE (VM_VFS_BASE+2) /* close() */
-# define VMVC_FD m1_i1
-# define VMVC_ENDPOINT m1_i2
-
/*===========================================================================*
* Miscellaneous field names *
*===========================================================================*/
path.o device.o mount.o link.o exec.o \
filedes.o stadir.o protect.o time.o \
lock.o misc.o utility.o select.o timers.o table.o \
- vnode.o vmnt.o request.o mmap.o fscall.o
+ vnode.o vmnt.o request.o fscall.o
# build local binary
install all build: $(SERVER)
continue;
}
- /* Calls from VM. */
- if(who_e == VM_PROC_NR) {
- int caught = 1;
- switch(call_nr)
- {
- case VM_VFS_OPEN:
- error = do_vm_open();
- break;
- case VM_VFS_CLOSE:
- error = do_vm_close();
- break;
- case VM_VFS_MMAP:
- error = do_vm_mmap();
- break;
- default:
- caught = 0;
- error = 0; /* To satisfy lints. */
- break;
- }
- if(caught) {
- reply(who_e, error);
- continue;
- }
- }
-
SANITYCHECK;
/* Other calls. */
+++ /dev/null
-/* mmap implementation in VFS
- *
- * The entry points into this file are
- * do_vm_mmap: VM calls VM_VFS_MMAP
- */
-
-#include "fs.h"
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <string.h>
-#include <unistd.h>
-#include <minix/callnr.h>
-#include <minix/com.h>
-#include <minix/u64.h>
-#include "file.h"
-#include "fproc.h"
-#include "lock.h"
-#include "param.h"
-#include <dirent.h>
-#include <assert.h>
-#include <minix/vfsif.h>
-#include "vnode.h"
-#include "vmnt.h"
-
-/*===========================================================================*
- * do_vm_mmap *
- *===========================================================================*/
-PUBLIC int do_vm_mmap()
-{
-}
-
/* No need to do anything */
}
-
-/*===========================================================================*
- * do_vm_open *
- *===========================================================================*/
-PUBLIC int do_vm_open()
-{
- int len, r, n;
- endpoint_t ep;
-
- len = m_in.VMVO_NAME_LENGTH;
- m_out.VMV_ENDPOINT = ep = m_in.VMVO_ENDPOINT;
-
- /* Do open() call on behalf of any process, performed by VM. */
- if(len < 2 || len > sizeof(user_fullpath)) {
- printf("do_vm_open: strange length %d\n", len);
- m_out.VMVRO_FD = EINVAL;
- return(VM_VFS_REPLY_OPEN);
- }
-
- /* Do open on behalf of which process? */
- if(isokendpt(ep, &n) != OK) {
- printf("do_vm_open: strange endpoint %d\n", ep);
- m_out.VMVRO_FD = EINVAL;
- return(VM_VFS_REPLY_OPEN);
- }
-
- /* XXX - do open on behalf of this process */
- fp = &fproc[n];
-
- /* Get path name from VM address space. */
- if((r=sys_safecopyfrom(VM_PROC_NR, m_in.VMVO_NAME_GRANT, 0,
- (vir_bytes) user_fullpath, len, D)) != OK) {
- printf("do_vm_open: sys_safecopyfrom failed: %d\n", r);
- m_out.VMVRO_FD = EPERM;
- return(VM_VFS_REPLY_OPEN);
- }
-
- /* Check if path is null-terminated. */
- if(user_fullpath[len-1] != '\0') {
- printf("do_vm_open: name (len %d) not 0-terminated\n", len);
- m_out.VMVRO_FD = EINVAL;
- return(VM_VFS_REPLY_OPEN);
- }
-
- /* Perform open(). */
- m_out.VMVRO_FD = common_open(m_in.VMVO_FLAGS, m_in.VMVO_MODE);
- m_out.VMV_ENDPOINT = ep;
-
- /* Send open() reply. */
- return(VM_VFS_REPLY_OPEN);
-}
-
-
-/*===========================================================================*
- * do_vm_close *
- *===========================================================================*/
-PUBLIC int do_vm_close()
-{
- int len, r, n;
- endpoint_t ep;
-
- len = m_in.VMVO_NAME_LENGTH;
-
- /* Do close() call on behalf of any process, performed by VM. */
- m_out.VMV_ENDPOINT = ep = m_in.VMVC_ENDPOINT;
- if(isokendpt(ep, &n) != OK) {
- printf("do_vm_close: strange endpoint %d\n", ep);
- return(VM_VFS_REPLY_CLOSE);
- }
-
- /* Perform close(). */
- r = close_fd(&fproc[n], m_in.VMVC_FD);
-
- return(VM_VFS_REPLY_CLOSE);
-}
-
_PROTOTYPE( int do_getsysinfo, (void) );
_PROTOTYPE( int pm_dumpcore, (int proc_e, struct mem_map *seg_ptr) );
-/* mmap.c */
-_PROTOTYPE( int do_vm_mmap, (void) );
-
/* mount.c */
_PROTOTYPE( int do_fslogin, (void) );
_PROTOTYPE( int do_mount, (void) );
include /etc/make.conf
OBJ = main.o alloc.o utility.o exec.o exit.o fork.o break.o \
- signal.o vfs.o mmap.o slaballoc.o region.o pagefaults.o addravl.o \
+ signal.o mmap.o slaballoc.o region.o pagefaults.o addravl.o \
physravl.o rs.o queryexit.o map_mem.o
ARCHOBJ = $(ARCH)/vm.o $(ARCH)/pagetable.o $(ARCH)/arch_pagefaults.o $(ARCH)/util.o
/* signal.c */
_PROTOTYPE( int do_push_sig, (message *msg) );
-/* vfs.c */
-_PROTOTYPE( int do_vfs_reply, (message *msg) );
-_PROTOTYPE( int vfs_open, (struct vmproc *for_who, callback_t callback,
- cp_grant_id_t filename_gid, int filename_len, int flags, int mode));
-_PROTOTYPE( int vfs_close, (struct vmproc *for_who, callback_t callback,
- int fd));
-
/* map_mem.c */
_PROTOTYPE( int map_memory, (endpoint_t sour, endpoint_t dest,
vir_bytes virt_s, vir_bytes virt_d, vir_bytes length, int flag));
+++ /dev/null
-
-#define _SYSTEM 1
-
-#include <minix/callnr.h>
-#include <minix/com.h>
-#include <minix/config.h>
-#include <minix/const.h>
-#include <minix/ds.h>
-#include <minix/endpoint.h>
-#include <minix/keymap.h>
-#include <minix/minlib.h>
-#include <minix/type.h>
-#include <minix/ipc.h>
-#include <minix/sysutil.h>
-#include <minix/syslib.h>
-#include <minix/safecopies.h>
-#include <minix/bitmap.h>
-
-#include <errno.h>
-#include <string.h>
-#include <env.h>
-#include <stdio.h>
-
-#include "glo.h"
-#include "proto.h"
-#include "util.h"
-
-/*===========================================================================*
- * register_callback *
- *===========================================================================*/
-PRIVATE void register_callback(struct vmproc *for_who, callback_t callback,
- int callback_type)
-{
- if(for_who->vm_callback) {
- vm_panic("register_callback: callback already registered",
- for_who->vm_callback_type);
- }
- for_who->vm_callback = callback;
- for_who->vm_callback_type = callback_type;
-
- return;
-}
-
-/*===========================================================================*
- * vfs_open *
- *===========================================================================*/
-PUBLIC int vfs_open(struct vmproc *for_who, callback_t callback,
- cp_grant_id_t filename_gid, int filename_len, int flags, int mode)
-{
- static message m;
- int r;
-
- register_callback(for_who, callback, VM_VFS_REPLY_OPEN);
-
- m.m_type = VM_VFS_OPEN;
- m.VMVO_NAME_GRANT = filename_gid;
- m.VMVO_NAME_LENGTH = filename_len;
- m.VMVO_FLAGS = flags;
- m.VMVO_MODE = mode;
- m.VMVO_ENDPOINT = for_who->vm_endpoint;
-
- if((r=asynsend(VFS_PROC_NR, &m)) != OK) {
- vm_panic("vfs_open: asynsend failed", r);
- }
-
- return r;
-}
-
-/*===========================================================================*
- * vfs_close *
- *===========================================================================*/
-PUBLIC int vfs_close(struct vmproc *for_who, callback_t callback, int fd)
-{
- static message m;
- int r;
-
- register_callback(for_who, callback, VM_VFS_REPLY_CLOSE);
-
- m.m_type = VM_VFS_CLOSE;
- m.VMVC_ENDPOINT = for_who->vm_endpoint;
- m.VMVC_FD = fd;
-
- if((r=asynsend(VFS_PROC_NR, &m)) != OK) {
- vm_panic("vfs_close: asynsend failed", r);
- }
-
- return r;
-}
-
-/*===========================================================================*
- * do_vfs_reply *
- *===========================================================================*/
-PUBLIC int do_vfs_reply(message *m)
-{
-/* Reply to a request has been received from vfs. Handle it. First verify
- * and look up which process, identified by endpoint, this is about.
- * Then call the callback function that was registered when the request
- * was done. Return result to vfs.
- */
- endpoint_t ep;
- struct vmproc *vmp;
- int procno;
- callback_t cb;
- ep = m->VMV_ENDPOINT;
- if(vm_isokendpt(ep, &procno) != OK) {
- printf("VM:do_vfs_reply: reply %d about invalid endpoint %d\n",
- m->m_type, ep);
- vm_panic("do_vfs_reply: invalid endpoint from vfs", NO_NUM);
- }
- vmp = &vmproc[procno];
- if(!vmp->vm_callback) {
- printf("VM:do_vfs_reply: reply %d: endpoint %d not waiting\n",
- m->m_type, ep);
- vm_panic("do_vfs_reply: invalid endpoint from vfs", NO_NUM);
- }
- if(vmp->vm_callback_type != m->m_type) {
- printf("VM:do_vfs_reply: reply %d unexpected for endpoint %d\n"
- " (expecting %d)\n", m->m_type, ep, vmp->vm_callback_type);
- vm_panic("do_vfs_reply: invalid reply from vfs", NO_NUM);
- }
- if(vmp->vm_flags & VMF_EXITING) {
- /* This is not fatal or impossible, but the callback
- * function has to realize it shouldn't do any PM or
- * VFS calls for this process.
- */
- printf("VM:do_vfs_reply: reply %d for EXITING endpoint %d\n",
- m->m_type, ep);
- }
-
- /* All desired callback state has been used, so save and reset
- * the callback. This allows the callback to register another
- * one.
- */
- cb = vmp->vm_callback;
- vmp->vm_callback = NULL;
- cb(vmp, m);
- return SUSPEND;
-}
-
