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Rev 4345 Rev 4691
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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>
 44 
#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 
 
50 
#define NAME "vfs"
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#define NAME "vfs"
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 50 
 
52 
static void vfs_connection(ipc_callid_t iid, ipc_call_t *icall)
 51 
static void vfs_connection(ipc_callid_t iid, ipc_call_t *icall)
53 
{
 52 
{
54 
    bool keep_on_going = true;
 53 
    bool keep_on_going = true;
55 
   
 54 
 
56 
    /*
 55 
    /*
57 
     * 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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     */
 58 
     */
60 
    ipc_answer_0(iid, EOK);
 59 
    ipc_answer_0(iid, EOK);
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 77 
       
79 
        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;
 81 
            break;
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        case IPC_M_CONNECT_ME_TO:
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84 
            /*
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85 
             * Connect the client file system to another one.
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86 
             */
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87 
            /* FIXME:
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88 
             * Prevent ordinary clients from connecting to file
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89 
             * system servers directly. This should be solved by
 - 
 
90 
             * applying some security mechanisms.
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91 
             */
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92 
            fs_handle = IPC_GET_ARG1(call);
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            phone = vfs_grab_phone(fs_handle);
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94 
            (void) ipc_forward_fast(callid, phone, 0, 0, 0,
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                IPC_FF_NONE);
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96 
            vfs_release_phone(phone);
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97 
            break;
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98 
        case VFS_REGISTER:
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        case VFS_IN_REGISTER:
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            vfs_register(callid, &call);
 83 
            vfs_register(callid, &call);
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            /*
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101 
             * Keep the connection open so that a file system can
 84 
            keep_on_going = false;
102 
             * later ask us to connect it to another file system.
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103 
             * This is necessary to support non-root mounts.
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104 
             */
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105 
            break;
 85 
            break;
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        case VFS_MOUNT:
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        case VFS_IN_MOUNT:
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            vfs_mount(callid, &call);
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            vfs_mount(callid, &call);
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            break;
 88 
            break;
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        case VFS_OPEN:
 89 
        case VFS_IN_OPEN:
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            vfs_open(callid, &call);
 90 
            vfs_open(callid, &call);
111 
            break;
 91 
            break;
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 92 
        case VFS_IN_OPEN_NODE:
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 93 
            vfs_open_node(callid, &call);
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 94 
            break;
112 
        case VFS_CLOSE:
 95 
        case VFS_IN_CLOSE:
113 
            vfs_close(callid, &call);
 96 
            vfs_close(callid, &call);
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            break;
 97 
            break;
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        case VFS_READ:
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        case VFS_IN_READ:
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            vfs_read(callid, &call);
 99 
            vfs_read(callid, &call);
117 
            break;
 100 
            break;
118 
        case VFS_WRITE:
 101 
        case VFS_IN_WRITE:
119 
            vfs_write(callid, &call);
 102 
            vfs_write(callid, &call);
120 
            break;
 103 
            break;
121 
        case VFS_SEEK:
 104 
        case VFS_IN_SEEK:
122 
            vfs_seek(callid, &call);
 105 
            vfs_seek(callid, &call);
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            break;
 106 
            break;
124 
        case VFS_TRUNCATE:
 107 
        case VFS_IN_TRUNCATE:
125 
            vfs_truncate(callid, &call);
 108 
            vfs_truncate(callid, &call);
126 
            break;
 109 
            break;
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 110 
        case VFS_IN_FSTAT:
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 111 
            vfs_fstat(callid, &call);
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 112 
            break;
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 113 
        case VFS_IN_STAT:
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 114 
            vfs_stat(callid, &call);
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 115 
            break;
127 
        case VFS_MKDIR:
 116 
        case VFS_IN_MKDIR:
128 
            vfs_mkdir(callid, &call);
 117 
            vfs_mkdir(callid, &call);
129 
            break;
 118 
            break;
130 
        case VFS_UNLINK:
 119 
        case VFS_IN_UNLINK:
131 
            vfs_unlink(callid, &call);
 120 
            vfs_unlink(callid, &call);
132 
            break;
 121 
            break;
133 
        case VFS_RENAME:
 122 
        case VFS_IN_RENAME:
134 
            vfs_rename(callid, &call);
 123 
            vfs_rename(callid, &call);
135 
            break;
 124 
            break;
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 125 
        case VFS_IN_SYNC:
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 126 
            vfs_sync(callid, &call);
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 127 
            break;
136 
        default:
 128 
        default:
137 
            ipc_answer_0(callid, ENOTSUP);
 129 
            ipc_answer_0(callid, ENOTSUP);
138 
            break;
 130 
            break;
139 
        }
 131 
        }
140 
    }
 132 
    }
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145 
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 
     */
 - 
 
152 
    list_initialize(&fs_head);
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153 
   
 - 
 
154 
    /*
 - 
 
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 
    }
Line 175... Line 161...
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);