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Rev 4153 Rev 4581
Line 41... Line 41...
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#include <errno.h>
 41 
#include <errno.h>
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#include <stdio.h>
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#include <stdio.h>
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#include <bool.h>
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#include <bool.h>
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#include <string.h>
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#include <string.h>
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#include <as.h>
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#include <as.h>
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#include <libadt/list.h>
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#include <atomic.h>
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#include <atomic.h>
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#include "vfs.h"
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#include "vfs.h"
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 48 
 
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#define NAME "vfs"
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#define NAME "vfs"
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 50 
 
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static void vfs_connection(ipc_callid_t iid, ipc_call_t *icall)
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static void vfs_connection(ipc_callid_t iid, ipc_call_t *icall)
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{
 52 
{
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    bool keep_on_going = true;
 53 
    bool keep_on_going = true;
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 54 
 
56 
    /*
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    /*
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     * The connection was opened via the IPC_CONNECT_ME_TO call.
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     * The connection was opened via the IPC_CONNECT_ME_TO call.
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     * This call needs to be answered.
 57 
     * This call needs to be answered.
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     */
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     */
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    ipc_answer_0(iid, EOK);
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    ipc_answer_0(iid, EOK);
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        switch (IPC_GET_METHOD(call)) {
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        switch (IPC_GET_METHOD(call)) {
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        case IPC_M_PHONE_HUNGUP:
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        case IPC_M_PHONE_HUNGUP:
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            keep_on_going = false;
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            keep_on_going = false;
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            break;
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            break;
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        case IPC_M_CONNECT_ME_TO:
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            /*
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             * Connect the client file system to another one.
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             */
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            /* FIXME:
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             * Prevent ordinary clients from connecting to file
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             * system servers directly. This should be solved by
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             * applying some security mechanisms.
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             */
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            fs_handle = IPC_GET_ARG1(call);
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            phone = vfs_grab_phone(fs_handle);
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            (void) ipc_forward_fast(callid, phone, 0, 0, 0,
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                IPC_FF_NONE);
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            vfs_release_phone(phone);
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            break;
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        case VFS_REGISTER:
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        case VFS_REGISTER:
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            vfs_register(callid, &call);
 83 
            vfs_register(callid, &call);
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            /*
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             * Keep the connection open so that a file system can
 84 
            keep_on_going = false;
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             * later ask us to connect it to another file system.
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             * This is necessary to support non-root mounts.
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             */
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            break;
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            break;
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        case VFS_MOUNT:
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        case VFS_MOUNT:
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            vfs_mount(callid, &call);
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            vfs_mount(callid, &call);
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            break;
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            break;
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        case VFS_OPEN:
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        case VFS_OPEN:
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            vfs_open(callid, &call);
 90 
            vfs_open(callid, &call);
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            break;
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            break;
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        case VFS_OPEN_NODE:
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 93 
            vfs_open_node(callid, &call);
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            break;
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        case VFS_CLOSE:
 95 
        case VFS_CLOSE:
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            vfs_close(callid, &call);
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            vfs_close(callid, &call);
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            break;
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            break;
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        case VFS_READ:
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        case VFS_READ:
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            vfs_read(callid, &call);
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            vfs_read(callid, &call);
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            vfs_unlink(callid, &call);
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            vfs_unlink(callid, &call);
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            break;
 115 
            break;
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        case VFS_RENAME:
 116 
        case VFS_RENAME:
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            vfs_rename(callid, &call);
 117 
            vfs_rename(callid, &call);
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            break;
 118 
            break;
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 119 
        case VFS_DEVICE:
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 120 
            vfs_device(callid, &call);
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 121 
            break;
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 122 
        case VFS_SYNC:
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 123 
            vfs_sync(callid, &call);
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            break;
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 125 
        case VFS_NODE:
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 126 
            vfs_node(callid, &call);
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 127 
            break;
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        default:
 128 
        default:
137 
            ipc_answer_0(callid, ENOTSUP);
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            ipc_answer_0(callid, ENOTSUP);
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            break;
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            break;
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        }
 131 
        }
140 
    }
 132 
    }
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int main(int argc, char **argv)
 137 
int main(int argc, char **argv)
146 
{
 138 
{
147 
    printf(NAME ": HelenOS VFS server\n");
 139 
    printf(NAME ": HelenOS VFS server\n");
148 
   
 140 
   
149 
    /*
 141 
    /*
150 
     * Initialize the list of registered file systems.
 - 
 
151 
     */
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152 
    list_initialize(&fs_head);
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153 
   
 - 
 
154 
    /*
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155 
     * Initialize VFS node hash table.
 142 
     * Initialize VFS node hash table.
156 
     */
 143 
     */
157 
    if (!vfs_nodes_init()) {
 144 
    if (!vfs_nodes_init()) {
158 
        printf(NAME ": Failed to initialize VFS node hash table\n");
 145 
        printf(NAME ": Failed to initialize VFS node hash table\n");
159 
        return ENOMEM;
 146 
        return ENOMEM;
160 
    }
 147 
    }
161 
   
 148 
   
162 
    /*
 149 
    /*
163 
     * Allocate and initialize the Path Lookup Buffer.
 150 
     * Allocate and initialize the Path Lookup Buffer.
164 
     */
 151 
     */
165 
    list_initialize(&plb_head);
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166 
    plb = as_get_mappable_page(PLB_SIZE);
 152 
    plb = as_get_mappable_page(PLB_SIZE);
167 
    if (!plb) {
 153 
    if (!plb) {
168 
        printf(NAME ": Cannot allocate a mappable piece of address space\n");
 154 
        printf(NAME ": Cannot allocate a mappable piece of address space\n");
169 
        return ENOMEM;
 155 
        return ENOMEM;
170 
    }
 156 
    }
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175 
        return ENOMEM;
 161 
        return ENOMEM;
176 
    }
 162 
    }
177 
    memset(plb, 0, PLB_SIZE);
 163 
    memset(plb, 0, PLB_SIZE);
178 
   
 164 
   
179 
    /*
 165 
    /*
180 
     * Set a connectio handling function/fibril.
 166 
     * Set a connection handling function/fibril.
181 
     */
 167 
     */
182 
    async_set_client_connection(vfs_connection);
 168 
    async_set_client_connection(vfs_connection);
183 
   
 169 
 
184 
    /*
 170 
    /*
185 
     * Register at the naming service.
 171 
     * Register at the naming service.
186 
     */
 172 
     */
187 
    ipcarg_t phonead;
 173 
    ipcarg_t phonead;
188 
    ipc_connect_to_me(PHONE_NS, SERVICE_VFS, 0, 0, &phonead);
 174 
    ipc_connect_to_me(PHONE_NS, SERVICE_VFS, 0, 0, &phonead);