39,6 → 39,7 |
#include <ipc/services.h> |
#include <async.h> |
#include <errno.h> |
#include <stdio.h> |
#include <stdlib.h> |
#include <string.h> |
#include <ctype.h> |
47,6 → 48,9 |
#include <libadt/list.h> |
#include "vfs.h" |
|
|
#define dprintf(...) printf(__VA_ARGS__) |
|
atomic_t fs_head_futex = FUTEX_INITIALIZER; |
link_t fs_head; |
|
64,15 → 68,20 |
* Check if the name is non-empty and is composed solely of ASCII |
* characters [a-z]+[a-z0-9_-]*. |
*/ |
if (!islower(info->name[0])) |
if (!islower(info->name[0])) { |
dprintf("The name doesn't start with a lowercase character.\n"); |
return false; |
} |
for (i = 1; i < FS_NAME_MAXLEN; i++) { |
if (!(islower(info->name[i]) || isdigit(info->name[i])) && |
(info->name[i] != '-') && (info->name[i] != '_')) { |
if (info->name[i] == '\0') |
if (info->name[i] == '\0') { |
break; |
else |
} else { |
dprintf("The name contains illegal " |
"characters.\n"); |
return false; |
} |
} |
} |
|
80,29 → 89,45 |
/* |
* Check if the FS implements mandatory VFS operations. |
*/ |
if (info->ops[IPC_METHOD_TO_VFS_OP(VFS_REGISTER)] != VFS_OP_DEFINED) |
if (info->ops[IPC_METHOD_TO_VFS_OP(VFS_REGISTER)] != VFS_OP_DEFINED) { |
dprintf("Operation VFS_REGISTER not defined by the client.\n"); |
return false; |
if (info->ops[IPC_METHOD_TO_VFS_OP(VFS_MOUNT)] != VFS_OP_DEFINED) |
} |
if (info->ops[IPC_METHOD_TO_VFS_OP(VFS_MOUNT)] != VFS_OP_DEFINED) { |
dprintf("Operation VFS_MOUNT not defined by the client.\n"); |
return false; |
if (info->ops[IPC_METHOD_TO_VFS_OP(VFS_UNMOUNT)] != VFS_OP_DEFINED) |
} |
if (info->ops[IPC_METHOD_TO_VFS_OP(VFS_UNMOUNT)] != VFS_OP_DEFINED) { |
dprintf("Operation VFS_UNMOUNT not defined by the client.\n"); |
return false; |
if (info->ops[IPC_METHOD_TO_VFS_OP(VFS_LOOKUP)] != VFS_OP_DEFINED) |
} |
if (info->ops[IPC_METHOD_TO_VFS_OP(VFS_LOOKUP)] != VFS_OP_DEFINED) { |
dprintf("Operation VFS_LOOKUP not defined by the client.\n"); |
return false; |
if (info->ops[IPC_METHOD_TO_VFS_OP(VFS_OPEN)] != VFS_OP_DEFINED) |
} |
if (info->ops[IPC_METHOD_TO_VFS_OP(VFS_OPEN)] != VFS_OP_DEFINED) { |
dprintf("Operation VFS_OPEN not defined by the client.\n"); |
return false; |
if (info->ops[IPC_METHOD_TO_VFS_OP(VFS_CLOSE)] != VFS_OP_DEFINED) |
} |
if (info->ops[IPC_METHOD_TO_VFS_OP(VFS_CLOSE)] != VFS_OP_DEFINED) { |
dprintf("Operation VFS_CLOSE not defined by the client.\n"); |
return false; |
if (info->ops[IPC_METHOD_TO_VFS_OP(VFS_READ)] != VFS_OP_DEFINED) |
} |
if (info->ops[IPC_METHOD_TO_VFS_OP(VFS_READ)] != VFS_OP_DEFINED) { |
dprintf("Operation VFS_READ not defined by the client.\n"); |
return false; |
} |
|
/* |
* Check if each operation is either not defined, defined or default. |
*/ |
for (i = VFS_FIRST; i < VFS_LAST; i++) { |
if ((IPC_METHOD_TO_VFS_OP(i) != VFS_OP_NULL) && |
(IPC_METHOD_TO_VFS_OP(i) != VFS_OP_DEFAULT) && |
(IPC_METHOD_TO_VFS_OP(i) != VFS_OP_DEFINED)) |
return false; |
if ((info->ops[IPC_METHOD_TO_VFS_OP(i)] != VFS_OP_NULL) && |
(info->ops[IPC_METHOD_TO_VFS_OP(i)] != VFS_OP_DEFAULT) && |
(info->ops[IPC_METHOD_TO_VFS_OP(i)] != VFS_OP_DEFINED)) { |
dprintf("Operation info not understood.\n"); |
return false; |
} |
} |
return true; |
} |
119,6 → 144,9 |
int rc; |
size_t size; |
|
dprintf("Processing VFS_REGISTER request received from %p.\n", |
request->in_phone_hash); |
|
/* |
* The first call has to be IPC_M_DATA_SEND in which we receive the |
* VFS info structure from the client FS. |
126,12 → 154,15 |
if (!ipc_data_receive(&callid, &call, NULL, &size)) { |
/* |
* The client doesn't obey the same protocol as we do. |
*/ |
*/ |
dprintf("Receiving of VFS info failed.\n"); |
ipc_answer_fast(callid, EINVAL, 0, 0); |
ipc_answer_fast(rid, EINVAL, 0, 0); |
return; |
} |
|
dprintf("VFS info received, size = %d\n", size); |
|
/* |
* We know the size of the VFS info structure. See if the client |
* understands this easy concept too. |
141,6 → 172,7 |
* The client is sending us something, which cannot be |
* the info structure. |
*/ |
dprintf("Received VFS info has bad size.\n"); |
ipc_answer_fast(callid, EINVAL, 0, 0); |
ipc_answer_fast(rid, EINVAL, 0, 0); |
return; |
152,6 → 184,7 |
*/ |
fs_info = (fs_info_t *) malloc(sizeof(fs_info_t)); |
if (!fs_info) { |
dprintf("Could not allocate memory for FS info.\n"); |
ipc_answer_fast(callid, ENOMEM, 0, 0); |
ipc_answer_fast(rid, ENOMEM, 0, 0); |
return; |
159,12 → 192,16 |
link_initialize(&fs_info->fs_link); |
|
rc = ipc_data_deliver(callid, &call, &fs_info->vfs_info, size); |
if (!rc) { |
if (rc != EOK) { |
dprintf("Failed to deliver the VFS info into our AS, rc=%d.\n", |
rc); |
free(fs_info); |
ipc_answer_fast(callid, rc, 0, 0); |
ipc_answer_fast(rid, rc, 0, 0); |
return; |
} |
|
dprintf("VFS info delivered.\n"); |
|
if (!vfs_info_sane(&fs_info->vfs_info)) { |
free(fs_info); |
187,6 → 224,7 |
/* |
* We already register a fs like this. |
*/ |
dprintf("FS is already registered.\n"); |
futex_up(&fs_head_futex); |
free(fs_info); |
ipc_answer_fast(callid, EEXISTS, 0, 0); |
198,6 → 236,7 |
/* |
* Add fs_info to the list of registered FS's. |
*/ |
dprintf("Adding FS into the registered list.\n"); |
list_append(&fs_info->fs_link, &fs_head); |
|
/* |
212,6 → 251,7 |
*/ |
callid = async_get_call(&call); |
if (IPC_GET_METHOD(call) != IPC_M_CONNECT_TO_ME) { |
dprintf("Unexpected call, method = %d\n", IPC_GET_METHOD(call)); |
list_remove(&fs_info->fs_link); |
futex_up(&fs_head_futex); |
free(fs_info); |
222,6 → 262,8 |
fs_info->phone = IPC_GET_ARG3(call); |
ipc_answer_fast(callid, EOK, 0, 0); |
|
dprintf("Callback connection to FS created.\n"); |
|
futex_up(&fs_head_futex); |
|
/* |
228,6 → 270,8 |
* That was it. The FS has been registered. |
*/ |
ipc_answer_fast(rid, EOK, 0, 0); |
dprintf("\"%s\" filesystem successfully registered.\n", |
fs_info->vfs_info.name); |
} |
|
static void vfs_connection(ipc_callid_t iid, ipc_call_t *icall) |
234,6 → 278,8 |
{ |
bool keep_on_going = 1; |
|
printf("Connection opened from %p\n", icall->in_phone_hash); |
|
/* |
* The connection was opened via the IPC_CONNECT_ME_TO call. |
* This call needs to be answered. |
255,6 → 301,8 |
ipc_call_t call; |
|
callid = async_get_call(&call); |
|
printf("Received call, method=%d\n", IPC_GET_METHOD(call)); |
|
switch (IPC_GET_METHOD(call)) { |
case IPC_M_PHONE_HUNGUP: |
286,6 → 334,8 |
{ |
ipcarg_t phonead; |
|
printf("VFS: HelenOS VFS server\n"); |
|
list_initialize(&fs_head); |
async_set_client_connection(vfs_connection); |
ipc_connect_to_me(PHONE_NS, SERVICE_VFS, 0, &phonead); |