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Rev 3219 Rev 3403
Line 69... Line 69...
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 69 
 
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void vfs_mount(ipc_callid_t rid, ipc_call_t *request)
 70 
void vfs_mount(ipc_callid_t rid, ipc_call_t *request)
71 
{
 71 
{
72 
    dev_handle_t dev_handle;
 72 
    dev_handle_t dev_handle;
73 
    vfs_node_t *mp_node = NULL;
 73 
    vfs_node_t *mp_node = NULL;
- 
 
 74 
    ipc_callid_t callid;
- 
 
 75 
    ipc_call_t data;
74 
    int rc;
 76 
    int rc;
75 
    int phone;
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    int phone;
- 
 
 78 
    size_t size;
76 
 
 79 
 
77 
    /*
 80 
    /*
78 
     * We expect the library to do the device-name to device-handle
 81 
     * We expect the library to do the device-name to device-handle
79 
     * translation for us, thus the device handle will arrive as ARG1
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     * translation for us, thus the device handle will arrive as ARG1
80 
     * in the request.
 83 
     * in the request.
Line 84... Line 87...
84 
    /*
 87 
    /*
85 
     * For now, don't make use of ARG2 and ARG3, but they can be used to
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     * For now, don't make use of ARG2 and ARG3, but they can be used to
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     * carry mount options in the future.
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     * carry mount options in the future.
87 
     */
 90 
     */
88 
 
 91 
 
89 
    ipc_callid_t callid;
 - 
 
90 
    size_t size;
 - 
 
91 
 
 - 
 
92 
    /*
 92 
    /*
93 
     * Now, we expect the client to send us data with the name of the file
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     * Now, we expect the client to send us data with the name of the file
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     * system.
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     * system.
95 
     */
 95 
     */
96 
    if (!ipc_data_write_receive(&callid, &size)) {
 96 
    if (!ipc_data_write_receive(&callid, &size)) {
Line 113... Line 113...
113 
    char fs_name[FS_NAME_MAXLEN + 1];
 113 
    char fs_name[FS_NAME_MAXLEN + 1];
114 
    (void) ipc_data_write_finalize(callid, fs_name, size);
 114 
    (void) ipc_data_write_finalize(callid, fs_name, size);
115 
    fs_name[size] = '\0';
 115 
    fs_name[size] = '\0';
116 
   
 116 
   
117 
    /*
 117 
    /*
- 
 
 118 
     * Wait for IPC_M_PING so that we can return an error if we don't know
- 
 
 119 
     * fs_name.
- 
 
 120 
     */
- 
 
 121 
    callid = async_get_call(&data);
- 
 
 122 
    if (IPC_GET_METHOD(data) != IPC_M_PING) {
- 
 
 123 
        ipc_answer_0(callid, ENOTSUP);
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 124 
        ipc_answer_0(rid, ENOTSUP);
- 
 
 125 
        return;
- 
 
 126 
    }
- 
 
 127 
 
- 
 
 128 
    /*
118 
     * Check if we know a file system with the same name as is in fs_name.
 129 
     * Check if we know a file system with the same name as is in fs_name.
119 
     * This will also give us its file system handle.
 130 
     * This will also give us its file system handle.
120 
     */
 131 
     */
121 
    fs_handle_t fs_handle = fs_name_to_handle(fs_name, true);
 132 
    fs_handle_t fs_handle = fs_name_to_handle(fs_name, true);
122 
    if (!fs_handle) {
 133 
    if (!fs_handle) {
- 
 
 134 
        ipc_answer_0(callid, ENOENT);
123 
        ipc_answer_0(rid, ENOENT);
 135 
        ipc_answer_0(rid, ENOENT);
124 
        return;
 136 
        return;
125 
    }
 137 
    }
126 
 
 138 
 
- 
 
 139 
    /* Acknowledge that we know fs_name. */
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 140 
    ipc_answer_0(callid, EOK);
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 141 
 
127 
    /* Now, we want the client to send us the mount point. */
 142 
    /* Now, we want the client to send us the mount point. */
128 
    if (!ipc_data_write_receive(&callid, &size)) {
 143 
    if (!ipc_data_write_receive(&callid, &size)) {
129 
        ipc_answer_0(callid, EINVAL);
 144 
        ipc_answer_0(callid, EINVAL);
130 
        ipc_answer_0(rid, EINVAL);
 145 
        ipc_answer_0(rid, EINVAL);
131 
        return;
 146 
        return;
Line 188... Line 203...
188 
         */
 203 
         */
189 
        rwlock_write_unlock(&namespace_rwlock);
 204 
        rwlock_write_unlock(&namespace_rwlock);
190 
    } else {
 205 
    } else {
191 
        /* We still don't have the root file system mounted. */
 206 
        /* We still don't have the root file system mounted. */
192 
        if ((size == 1) && (buf[0] == '/')) {
 207 
        if ((size == 1) && (buf[0] == '/')) {
- 
 
 208 
            vfs_lookup_res_t mr_res;
- 
 
 209 
            vfs_node_t *mr_node;
- 
 
 210 
            ipcarg_t rindex;
- 
 
 211 
            ipcarg_t rsize;
- 
 
 212 
            ipcarg_t rlnkcnt;
- 
 
 213 
       
193 
            /*
 214 
            /*
194 
             * For this simple, but important case,
 215 
             * For this simple, but important case,
195 
             * we are almost done.
 216 
             * we are almost done.
196 
             */
 217 
             */
197 
            free(buf);
 218 
            free(buf);
198 
           
 219 
           
199 
            /* Tell the mountee that it is being mounted. */
 220 
            /* Tell the mountee that it is being mounted. */
200 
            phone = vfs_grab_phone(fs_handle);
 221 
            phone = vfs_grab_phone(fs_handle);
201 
            rc = async_req_1_0(phone, VFS_MOUNTED,
 222 
            rc = async_req_1_3(phone, VFS_MOUNTED,
202 
                (ipcarg_t) dev_handle);
 223 
                (ipcarg_t) dev_handle, &rindex, &rsize, &rlnkcnt);
203 
            vfs_release_phone(phone);
 224 
            vfs_release_phone(phone);
204 
 
 225 
           
205 
            if (rc == EOK) {
 226 
            if (rc != EOK) {
206 
                rootfs.fs_handle = fs_handle;
 227 
                futex_up(&rootfs_futex);
207 
                rootfs.dev_handle = dev_handle;
 228 
                ipc_answer_0(rid, rc);
- 
 
 229 
                return;
208 
            }
 230 
            }
209 
 
 231 
 
- 
 
 232 
            mr_res.triplet.fs_handle = fs_handle;
- 
 
 233 
            mr_res.triplet.dev_handle = dev_handle;
- 
 
 234 
            mr_res.triplet.index = (fs_index_t) rindex;
- 
 
 235 
            mr_res.size = (size_t) rsize;
- 
 
 236 
            mr_res.lnkcnt = (unsigned) rlnkcnt;
- 
 
 237 
 
- 
 
 238 
            rootfs.fs_handle = fs_handle;
- 
 
 239 
            rootfs.dev_handle = dev_handle;
210 
            futex_up(&rootfs_futex);
 240 
            futex_up(&rootfs_futex);
- 
 
 241 
 
- 
 
 242 
            /* Add reference to the mounted root. */
- 
 
 243 
            mr_node = vfs_node_get(&mr_res);
- 
 
 244 
            assert(mr_node);
- 
 
 245 
 
211 
            ipc_answer_0(rid, rc);
 246 
            ipc_answer_0(rid, rc);
212 
            return;
 247 
            return;
213 
        } else {
 248 
        } else {
214 
            /*
 249 
            /*
215 
             * We can't resolve this without the root filesystem
 250 
             * We can't resolve this without the root filesystem