/branches/network/uspace/srv/fs/devfs/devfs.c |
---|
0,0 → 1,141 |
/* |
* Copyright (c) 2009 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup fs |
* @{ |
*/ |
/** |
* @file devfs.c |
* @brief Devices file system. |
* |
* Every device registered to device mapper is represented as a file in this |
* file system. |
*/ |
#include <stdio.h> |
#include <ipc/ipc.h> |
#include <ipc/services.h> |
#include <async.h> |
#include <errno.h> |
#include <libfs.h> |
#include "devfs.h" |
#include "devfs_ops.h" |
#define NAME "devfs" |
static vfs_info_t devfs_vfs_info = { |
.name = "devfs", |
}; |
fs_reg_t devfs_reg; |
static void devfs_connection(ipc_callid_t iid, ipc_call_t *icall) |
{ |
if (iid) |
ipc_answer_0(iid, EOK); |
while (true) { |
ipc_call_t call; |
ipc_callid_t callid = async_get_call(&call); |
switch (IPC_GET_METHOD(call)) { |
case IPC_M_PHONE_HUNGUP: |
return; |
case VFS_MOUNTED: |
devfs_mounted(callid, &call); |
break; |
case VFS_MOUNT: |
devfs_mount(callid, &call); |
break; |
case VFS_LOOKUP: |
devfs_lookup(callid, &call); |
break; |
case VFS_OPEN_NODE: |
devfs_open_node(callid, &call); |
break; |
case VFS_DEVICE: |
devfs_device(callid, &call); |
break; |
case VFS_READ: |
devfs_read(callid, &call); |
break; |
case VFS_WRITE: |
devfs_write(callid, &call); |
break; |
case VFS_TRUNCATE: |
devfs_truncate(callid, &call); |
break; |
case VFS_CLOSE: |
devfs_close(callid, &call); |
break; |
case VFS_SYNC: |
devfs_sync(callid, &call); |
break; |
case VFS_DESTROY: |
devfs_destroy(callid, &call); |
break; |
default: |
ipc_answer_0(callid, ENOTSUP); |
break; |
} |
} |
} |
int main(int argc, char *argv[]) |
{ |
printf(NAME ": HelenOS Device Filesystem\n"); |
if (!devfs_init()) { |
printf(NAME ": failed to initialize devfs\n"); |
return -1; |
} |
int vfs_phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_VFS, 0, 0); |
if (vfs_phone < EOK) { |
printf(NAME ": Unable to connect to VFS\n"); |
return -1; |
} |
int rc = fs_register(vfs_phone, &devfs_reg, &devfs_vfs_info, |
devfs_connection); |
if (rc != EOK) { |
printf(NAME ": Failed to register file system (%d)\n", rc); |
return rc; |
} |
printf(NAME ": Accepting connections\n"); |
async_manager(); |
/* Not reached */ |
return 0; |
} |
/** |
* @} |
*/ |
/branches/network/uspace/srv/fs/devfs/devfs_ops.c |
---|
0,0 → 1,513 |
/* |
* Copyright (c) 2009 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup fs |
* @{ |
*/ |
/** |
* @file devfs_ops.c |
* @brief Implementation of VFS operations for the devfs file system server. |
*/ |
#include <ipc/ipc.h> |
#include <bool.h> |
#include <errno.h> |
#include <malloc.h> |
#include <string.h> |
#include <libfs.h> |
#include <fibril_sync.h> |
#include <adt/hash_table.h> |
#include "devfs.h" |
#include "devfs_ops.h" |
#define PLB_GET_CHAR(pos) (devfs_reg.plb_ro[pos % PLB_SIZE]) |
/** Opened devices structure */ |
typedef struct { |
dev_handle_t handle; |
int phone; |
size_t refcount; |
link_t link; |
} device_t; |
/** Hash table of opened devices */ |
static hash_table_t devices; |
/** Hash table mutex */ |
static FIBRIL_MUTEX_INITIALIZE(devices_mutex); |
#define DEVICES_KEYS 1 |
#define DEVICES_KEY_HANDLE 0 |
#define DEVICES_BUCKETS 256 |
/* Implementation of hash table interface for the nodes hash table. */ |
static hash_index_t devices_hash(unsigned long key[]) |
{ |
return key[DEVICES_KEY_HANDLE] % DEVICES_BUCKETS; |
} |
static int devices_compare(unsigned long key[], hash_count_t keys, link_t *item) |
{ |
device_t *dev = hash_table_get_instance(item, device_t, link); |
return (dev->handle == (dev_handle_t) key[DEVICES_KEY_HANDLE]); |
} |
static void devices_remove_callback(link_t *item) |
{ |
free(hash_table_get_instance(item, device_t, link)); |
} |
static hash_table_operations_t devices_ops = { |
.hash = devices_hash, |
.compare = devices_compare, |
.remove_callback = devices_remove_callback |
}; |
bool devfs_init(void) |
{ |
if (!hash_table_create(&devices, DEVICES_BUCKETS, |
DEVICES_KEYS, &devices_ops)) |
return false; |
if (devmap_get_phone(DEVMAP_CLIENT, IPC_FLAG_BLOCKING) < 0) |
return false; |
return true; |
} |
void devfs_mounted(ipc_callid_t rid, ipc_call_t *request) |
{ |
/* Accept the mount options */ |
ipc_callid_t callid; |
size_t size; |
if (!ipc_data_write_receive(&callid, &size)) { |
ipc_answer_0(callid, EINVAL); |
ipc_answer_0(rid, EINVAL); |
return; |
} |
char *opts = malloc(size + 1); |
if (!opts) { |
ipc_answer_0(callid, ENOMEM); |
ipc_answer_0(rid, ENOMEM); |
return; |
} |
ipcarg_t retval = ipc_data_write_finalize(callid, opts, size); |
if (retval != EOK) { |
ipc_answer_0(rid, retval); |
free(opts); |
return; |
} |
free(opts); |
ipc_answer_3(rid, EOK, 0, 0, 0); |
} |
void devfs_mount(ipc_callid_t rid, ipc_call_t *request) |
{ |
ipc_answer_0(rid, ENOTSUP); |
} |
void devfs_lookup(ipc_callid_t rid, ipc_call_t *request) |
{ |
ipcarg_t first = IPC_GET_ARG1(*request); |
ipcarg_t last = IPC_GET_ARG2(*request); |
dev_handle_t dev_handle = IPC_GET_ARG3(*request); |
ipcarg_t lflag = IPC_GET_ARG4(*request); |
fs_index_t index = IPC_GET_ARG5(*request); |
/* Hierarchy is flat, no altroot is supported */ |
if (index != 0) { |
ipc_answer_0(rid, ENOENT); |
return; |
} |
if ((lflag & L_LINK) || (lflag & L_UNLINK)) { |
ipc_answer_0(rid, ENOTSUP); |
return; |
} |
/* Eat slash */ |
if (PLB_GET_CHAR(first) == '/') { |
first++; |
first %= PLB_SIZE; |
} |
if (first >= last) { |
/* Root entry */ |
if (lflag & L_DIRECTORY) |
ipc_answer_5(rid, EOK, devfs_reg.fs_handle, dev_handle, 0, 0, 0); |
else |
ipc_answer_0(rid, ENOENT); |
} else { |
if (lflag & L_FILE) { |
size_t len; |
if (last >= first) |
len = last - first + 1; |
else |
len = first + PLB_SIZE - last + 1; |
char *name = (char *) malloc(len + 1); |
if (name == NULL) { |
ipc_answer_0(rid, ENOMEM); |
return; |
} |
size_t i; |
for (i = 0; i < len; i++) |
name[i] = PLB_GET_CHAR(first + i); |
name[len] = 0; |
dev_handle_t handle; |
if (devmap_device_get_handle(name, &handle, 0) != EOK) { |
free(name); |
ipc_answer_0(rid, ENOENT); |
return; |
} |
if (lflag & L_OPEN) { |
unsigned long key[] = { |
[DEVICES_KEY_HANDLE] = (unsigned long) handle |
}; |
fibril_mutex_lock(&devices_mutex); |
link_t *lnk = hash_table_find(&devices, key); |
if (lnk == NULL) { |
int phone = devmap_device_connect(handle, 0); |
if (phone < 0) { |
fibril_mutex_unlock(&devices_mutex); |
free(name); |
ipc_answer_0(rid, ENOENT); |
return; |
} |
device_t *dev = (device_t *) malloc(sizeof(device_t)); |
if (dev == NULL) { |
fibril_mutex_unlock(&devices_mutex); |
free(name); |
ipc_answer_0(rid, ENOMEM); |
return; |
} |
dev->handle = handle; |
dev->phone = phone; |
dev->refcount = 1; |
hash_table_insert(&devices, key, &dev->link); |
} else { |
device_t *dev = hash_table_get_instance(lnk, device_t, link); |
dev->refcount++; |
} |
fibril_mutex_unlock(&devices_mutex); |
} |
free(name); |
ipc_answer_5(rid, EOK, devfs_reg.fs_handle, dev_handle, handle, 0, 1); |
} else |
ipc_answer_0(rid, ENOENT); |
} |
} |
void devfs_open_node(ipc_callid_t rid, ipc_call_t *request) |
{ |
dev_handle_t handle = IPC_GET_ARG2(*request); |
unsigned long key[] = { |
[DEVICES_KEY_HANDLE] = (unsigned long) handle |
}; |
fibril_mutex_lock(&devices_mutex); |
link_t *lnk = hash_table_find(&devices, key); |
if (lnk == NULL) { |
int phone = devmap_device_connect(handle, 0); |
if (phone < 0) { |
fibril_mutex_unlock(&devices_mutex); |
ipc_answer_0(rid, ENOENT); |
return; |
} |
device_t *dev = (device_t *) malloc(sizeof(device_t)); |
if (dev == NULL) { |
fibril_mutex_unlock(&devices_mutex); |
ipc_answer_0(rid, ENOMEM); |
return; |
} |
dev->handle = handle; |
dev->phone = phone; |
dev->refcount = 1; |
hash_table_insert(&devices, key, &dev->link); |
} else { |
device_t *dev = hash_table_get_instance(lnk, device_t, link); |
dev->refcount++; |
} |
fibril_mutex_unlock(&devices_mutex); |
ipc_answer_3(rid, EOK, 0, 1, L_FILE); |
} |
void devfs_device(ipc_callid_t rid, ipc_call_t *request) |
{ |
fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request); |
if (index != 0) { |
unsigned long key[] = { |
[DEVICES_KEY_HANDLE] = (unsigned long) index |
}; |
fibril_mutex_lock(&devices_mutex); |
link_t *lnk = hash_table_find(&devices, key); |
if (lnk == NULL) { |
fibril_mutex_unlock(&devices_mutex); |
ipc_answer_0(rid, ENOENT); |
return; |
} |
fibril_mutex_unlock(&devices_mutex); |
ipc_answer_1(rid, EOK, (ipcarg_t) index); |
} else |
ipc_answer_0(rid, ENOTSUP); |
} |
void devfs_read(ipc_callid_t rid, ipc_call_t *request) |
{ |
fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request); |
off_t pos = (off_t) IPC_GET_ARG3(*request); |
if (index != 0) { |
unsigned long key[] = { |
[DEVICES_KEY_HANDLE] = (unsigned long) index |
}; |
fibril_mutex_lock(&devices_mutex); |
link_t *lnk = hash_table_find(&devices, key); |
if (lnk == NULL) { |
fibril_mutex_unlock(&devices_mutex); |
ipc_answer_0(rid, ENOENT); |
return; |
} |
device_t *dev = hash_table_get_instance(lnk, device_t, link); |
ipc_callid_t callid; |
if (!ipc_data_read_receive(&callid, NULL)) { |
fibril_mutex_unlock(&devices_mutex); |
ipc_answer_0(callid, EINVAL); |
ipc_answer_0(rid, EINVAL); |
return; |
} |
/* Make a request at the driver */ |
ipc_call_t answer; |
aid_t msg = async_send_3(dev->phone, IPC_GET_METHOD(*request), |
IPC_GET_ARG1(*request), IPC_GET_ARG2(*request), |
IPC_GET_ARG3(*request), &answer); |
/* Forward the IPC_M_DATA_READ request to the driver */ |
ipc_forward_fast(callid, dev->phone, 0, 0, 0, IPC_FF_ROUTE_FROM_ME); |
fibril_mutex_unlock(&devices_mutex); |
/* Wait for reply from the driver. */ |
ipcarg_t rc; |
async_wait_for(msg, &rc); |
size_t bytes = IPC_GET_ARG1(answer); |
/* Driver reply is the final result of the whole operation */ |
ipc_answer_1(rid, rc, bytes); |
} else { |
ipc_callid_t callid; |
size_t size; |
if (!ipc_data_read_receive(&callid, &size)) { |
ipc_answer_0(callid, EINVAL); |
ipc_answer_0(rid, EINVAL); |
return; |
} |
size_t count = devmap_device_get_count(); |
dev_desc_t *desc = malloc(count * sizeof(dev_desc_t)); |
if (desc == NULL) { |
ipc_answer_0(callid, ENOMEM); |
ipc_answer_1(rid, ENOMEM, 0); |
return; |
} |
size_t max = devmap_device_get_devices(count, desc); |
if (pos < max) { |
ipc_data_read_finalize(callid, desc[pos].name, str_size(desc[pos].name) + 1); |
} else { |
ipc_answer_0(callid, ENOENT); |
ipc_answer_1(rid, ENOENT, 0); |
return; |
} |
free(desc); |
ipc_answer_1(rid, EOK, 1); |
} |
} |
void devfs_write(ipc_callid_t rid, ipc_call_t *request) |
{ |
fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request); |
off_t pos = (off_t) IPC_GET_ARG3(*request); |
if (index != 0) { |
unsigned long key[] = { |
[DEVICES_KEY_HANDLE] = (unsigned long) index |
}; |
fibril_mutex_lock(&devices_mutex); |
link_t *lnk = hash_table_find(&devices, key); |
if (lnk == NULL) { |
fibril_mutex_unlock(&devices_mutex); |
ipc_answer_0(rid, ENOENT); |
return; |
} |
device_t *dev = hash_table_get_instance(lnk, device_t, link); |
ipc_callid_t callid; |
if (!ipc_data_write_receive(&callid, NULL)) { |
fibril_mutex_unlock(&devices_mutex); |
ipc_answer_0(callid, EINVAL); |
ipc_answer_0(rid, EINVAL); |
return; |
} |
/* Make a request at the driver */ |
ipc_call_t answer; |
aid_t msg = async_send_3(dev->phone, IPC_GET_METHOD(*request), |
IPC_GET_ARG1(*request), IPC_GET_ARG2(*request), |
IPC_GET_ARG3(*request), &answer); |
/* Forward the IPC_M_DATA_WRITE request to the driver */ |
ipc_forward_fast(callid, dev->phone, 0, 0, 0, IPC_FF_ROUTE_FROM_ME); |
fibril_mutex_unlock(&devices_mutex); |
/* Wait for reply from the driver. */ |
ipcarg_t rc; |
async_wait_for(msg, &rc); |
size_t bytes = IPC_GET_ARG1(answer); |
/* Driver reply is the final result of the whole operation */ |
ipc_answer_1(rid, rc, bytes); |
} else { |
/* Read-only filesystem */ |
ipc_answer_0(rid, ENOTSUP); |
} |
} |
void devfs_truncate(ipc_callid_t rid, ipc_call_t *request) |
{ |
ipc_answer_0(rid, ENOTSUP); |
} |
void devfs_close(ipc_callid_t rid, ipc_call_t *request) |
{ |
fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request); |
if (index != 0) { |
unsigned long key[] = { |
[DEVICES_KEY_HANDLE] = (unsigned long) index |
}; |
fibril_mutex_lock(&devices_mutex); |
link_t *lnk = hash_table_find(&devices, key); |
if (lnk == NULL) { |
fibril_mutex_unlock(&devices_mutex); |
ipc_answer_0(rid, ENOENT); |
return; |
} |
device_t *dev = hash_table_get_instance(lnk, device_t, link); |
dev->refcount--; |
if (dev->refcount == 0) { |
ipc_hangup(dev->phone); |
hash_table_remove(&devices, key, DEVICES_KEYS); |
} |
fibril_mutex_unlock(&devices_mutex); |
ipc_answer_0(rid, EOK); |
} else |
ipc_answer_0(rid, ENOTSUP); |
} |
void devfs_sync(ipc_callid_t rid, ipc_call_t *request) |
{ |
fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request); |
if (index != 0) { |
unsigned long key[] = { |
[DEVICES_KEY_HANDLE] = (unsigned long) index |
}; |
fibril_mutex_lock(&devices_mutex); |
link_t *lnk = hash_table_find(&devices, key); |
if (lnk == NULL) { |
fibril_mutex_unlock(&devices_mutex); |
ipc_answer_0(rid, ENOENT); |
return; |
} |
device_t *dev = hash_table_get_instance(lnk, device_t, link); |
/* Make a request at the driver */ |
ipc_call_t answer; |
aid_t msg = async_send_2(dev->phone, IPC_GET_METHOD(*request), |
IPC_GET_ARG1(*request), IPC_GET_ARG2(*request), &answer); |
fibril_mutex_unlock(&devices_mutex); |
/* Wait for reply from the driver */ |
ipcarg_t rc; |
async_wait_for(msg, &rc); |
/* Driver reply is the final result of the whole operation */ |
ipc_answer_0(rid, rc); |
} else |
ipc_answer_0(rid, ENOTSUP); |
} |
void devfs_destroy(ipc_callid_t rid, ipc_call_t *request) |
{ |
ipc_answer_0(rid, ENOTSUP); |
} |
/** |
* @} |
*/ |
/branches/network/uspace/srv/fs/devfs/devfs_ops.h |
---|
0,0 → 1,57 |
/* |
* Copyright (c) 2009 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup fs |
* @{ |
*/ |
#ifndef DEVFS_DEVFS_OPS_H_ |
#define DEVFS_DEVFS_OPS_H_ |
#include <ipc/ipc.h> |
#include <bool.h> |
extern bool devfs_init(void); |
extern void devfs_mounted(ipc_callid_t, ipc_call_t *); |
extern void devfs_mount(ipc_callid_t, ipc_call_t *); |
extern void devfs_lookup(ipc_callid_t, ipc_call_t *); |
extern void devfs_open_node(ipc_callid_t, ipc_call_t *); |
extern void devfs_device(ipc_callid_t, ipc_call_t *); |
extern void devfs_sync(ipc_callid_t, ipc_call_t *); |
extern void devfs_read(ipc_callid_t, ipc_call_t *); |
extern void devfs_write(ipc_callid_t, ipc_call_t *); |
extern void devfs_truncate(ipc_callid_t, ipc_call_t *); |
extern void devfs_close(ipc_callid_t, ipc_call_t *); |
extern void devfs_destroy(ipc_callid_t, ipc_call_t *); |
#endif |
/** |
* @} |
*/ |
/branches/network/uspace/srv/fs/devfs/Makefile |
---|
0,0 → 1,82 |
# |
# Copyright (c) 2005 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
## Setup toolchain |
# |
LIBC_PREFIX = ../../../lib/libc |
LIBFS_PREFIX = ../../../lib/libfs |
SOFTINT_PREFIX = ../../../lib/softint |
include $(LIBC_PREFIX)/Makefile.toolchain |
CFLAGS += -I $(LIBFS_PREFIX) |
LIBS = \ |
$(LIBFS_PREFIX)/libfs.a \ |
$(LIBC_PREFIX)/libc.a |
## Sources |
# |
OUTPUT = devfs |
SOURCES = \ |
devfs.c \ |
devfs_ops.c |
OBJECTS := $(addsuffix .o,$(basename $(SOURCES))) |
.PHONY: all clean depend disasm |
all: $(OUTPUT) $(OUTPUT).disasm |
-include Makefile.depend |
clean: |
-rm -f $(OUTPUT) $(OUTPUT).map $(OUTPUT).disasm Makefile.depend $(OBJECTS) |
depend: |
$(CC) $(DEFS) $(CFLAGS) -M $(SOURCES) > Makefile.depend |
$(OUTPUT): $(OBJECTS) $(LIBS) |
$(LD) -T $(LIBC_PREFIX)/arch/$(UARCH)/_link.ld $(OBJECTS) $(LIBS) $(LFLAGS) -o $@ -Map $(OUTPUT).map |
disasm: $(OUTPUT).disasm |
$(OUTPUT).disasm: $(OUTPUT) |
$(OBJDUMP) -d $< > $@ |
%.o: %.S |
$(CC) $(DEFS) $(AFLAGS) $(CFLAGS) -D__ASM__ -c $< -o $@ |
%.o: %.s |
$(AS) $(AFLAGS) $< -o $@ |
%.o: %.c |
$(CC) $(DEFS) $(CFLAGS) -c $< -o $@ |
/branches/network/uspace/srv/fs/devfs/devfs.h |
---|
0,0 → 1,44 |
/* |
* Copyright (c) 2009 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup fs |
* @{ |
*/ |
#ifndef DEVFS_DEVFS_H_ |
#define DEVFS_DEVFS_H_ |
#include <libfs.h> |
extern fs_reg_t devfs_reg; |
#endif |
/** |
* @} |
*/ |
/branches/network/uspace/srv/fs/tmpfs/tmpfs.h |
---|
38,12 → 38,15 |
#include <atomic.h> |
#include <sys/types.h> |
#include <bool.h> |
#include <libadt/hash_table.h> |
#include <adt/hash_table.h> |
#ifndef dprintf |
#define dprintf(...) printf(__VA_ARGS__) |
#endif |
#define TMPFS_NODE(node) ((node) ? (tmpfs_node_t *)(node)->data : NULL) |
#define FS_NODE(node) ((node) ? (node)->bp : NULL) |
typedef enum { |
TMPFS_NONE, |
TMPFS_FILE, |
50,18 → 53,26 |
TMPFS_DIRECTORY |
} tmpfs_dentry_type_t; |
/* forward declaration */ |
struct tmpfs_node; |
typedef struct tmpfs_dentry { |
link_t link; /**< Linkage for the list of siblings. */ |
struct tmpfs_node *node;/**< Back pointer to TMPFS node. */ |
char *name; /**< Name of dentry. */ |
} tmpfs_dentry_t; |
typedef struct tmpfs_node { |
fs_node_t *bp; /**< Back pointer to the FS node. */ |
fs_index_t index; /**< TMPFS node index. */ |
dev_handle_t dev_handle;/**< Device handle. */ |
link_t dh_link; /**< Dentries hash table link. */ |
struct tmpfs_dentry *sibling; |
struct tmpfs_dentry *child; |
hash_table_t names; /**< All names linking to this TMPFS node. */ |
link_t nh_link; /**< Nodes hash table link. */ |
tmpfs_dentry_type_t type; |
unsigned lnkcnt; /**< Link count. */ |
size_t size; /**< File size if type is TMPFS_FILE. */ |
void *data; /**< File content's if type is TMPFS_FILE. */ |
} tmpfs_dentry_t; |
link_t cs_head; /**< Head of child's siblings list. */ |
} tmpfs_node_t; |
extern fs_reg_t tmpfs_reg; |
75,7 → 86,11 |
extern void tmpfs_read(ipc_callid_t, ipc_call_t *); |
extern void tmpfs_write(ipc_callid_t, ipc_call_t *); |
extern void tmpfs_truncate(ipc_callid_t, ipc_call_t *); |
extern void tmpfs_close(ipc_callid_t, ipc_call_t *); |
extern void tmpfs_destroy(ipc_callid_t, ipc_call_t *); |
extern void tmpfs_open_node(ipc_callid_t, ipc_call_t *); |
extern void tmpfs_device(ipc_callid_t, ipc_call_t *); |
extern void tmpfs_sync(ipc_callid_t, ipc_call_t *); |
extern bool tmpfs_restore(dev_handle_t); |
/branches/network/uspace/srv/fs/tmpfs/tmpfs_dump.c |
---|
54,8 → 54,8 |
} __attribute__((packed)); |
static bool |
tmpfs_restore_recursion(int dev, off_t *bufpos, size_t *buflen, off_t *pos, |
tmpfs_dentry_t *parent) |
tmpfs_restore_recursion(dev_handle_t dev, off_t *bufpos, size_t *buflen, |
off_t *pos, fs_node_t *pfn) |
{ |
struct rdentry entry; |
libfs_ops_t *ops = &tmpfs_libfs_ops; |
63,7 → 63,8 |
do { |
char *fname; |
tmpfs_dentry_t *node; |
fs_node_t *fn; |
tmpfs_node_t *nodep; |
uint32_t size; |
if (block_read(dev, bufpos, buflen, pos, &entry, sizeof(entry), |
80,8 → 81,8 |
if (fname == NULL) |
return false; |
node = (tmpfs_dentry_t *) ops->create(dev, L_FILE); |
if (node == NULL) { |
fn = ops->create(dev, L_FILE); |
if (fn == NULL) { |
free(fname); |
return false; |
} |
88,15 → 89,15 |
if (block_read(dev, bufpos, buflen, pos, fname, |
entry.len, TMPFS_BLOCK_SIZE) != EOK) { |
ops->destroy((void *) node); |
ops->destroy(fn); |
free(fname); |
return false; |
} |
fname[entry.len] = 0; |
rc = ops->link((void *) parent, (void *) node, fname); |
rc = ops->link(pfn, fn, fname); |
if (rc != EOK) { |
ops->destroy((void *) node); |
ops->destroy(fn); |
free(fname); |
return false; |
} |
108,12 → 109,13 |
size = uint32_t_le2host(size); |
node->data = malloc(size); |
if (node->data == NULL) |
nodep = TMPFS_NODE(fn); |
nodep->data = malloc(size); |
if (nodep->data == NULL) |
return false; |
node->size = size; |
if (block_read(dev, bufpos, buflen, pos, node->data, |
nodep->size = size; |
if (block_read(dev, bufpos, buflen, pos, nodep->data, |
size, TMPFS_BLOCK_SIZE) != EOK) |
return false; |
123,8 → 125,8 |
if (fname == NULL) |
return false; |
node = (tmpfs_dentry_t *) ops->create(dev, L_DIRECTORY); |
if (node == NULL) { |
fn = ops->create(dev, L_DIRECTORY); |
if (fn == NULL) { |
free(fname); |
return false; |
} |
131,15 → 133,15 |
if (block_read(dev, bufpos, buflen, pos, fname, |
entry.len, TMPFS_BLOCK_SIZE) != EOK) { |
ops->destroy((void *) node); |
ops->destroy(fn); |
free(fname); |
return false; |
} |
fname[entry.len] = 0; |
rc = ops->link((void *) parent, (void *) node, fname); |
rc = ops->link(pfn, fn, fname); |
if (rc != EOK) { |
ops->destroy((void *) node); |
ops->destroy(fn); |
free(fname); |
return false; |
} |
146,7 → 148,7 |
free(fname); |
if (!tmpfs_restore_recursion(dev, bufpos, buflen, pos, |
node)) |
fn)) |
return false; |
break; |
/branches/network/uspace/srv/fs/tmpfs/tmpfs.c |
---|
96,6 → 96,8 |
callid = async_get_call(&call); |
switch (IPC_GET_METHOD(call)) { |
case IPC_M_PHONE_HUNGUP: |
return; |
case VFS_MOUNTED: |
tmpfs_mounted(callid, &call); |
break; |
114,9 → 116,21 |
case VFS_TRUNCATE: |
tmpfs_truncate(callid, &call); |
break; |
case VFS_CLOSE: |
tmpfs_close(callid, &call); |
break; |
case VFS_DESTROY: |
tmpfs_destroy(callid, &call); |
break; |
case VFS_OPEN_NODE: |
tmpfs_open_node(callid, &call); |
break; |
case VFS_DEVICE: |
tmpfs_device(callid, &call); |
break; |
case VFS_SYNC: |
tmpfs_sync(callid, &call); |
break; |
default: |
ipc_answer_0(callid, ENOTSUP); |
break; |
/branches/network/uspace/srv/fs/tmpfs/tmpfs_ops.c |
---|
47,7 → 47,7 |
#include <stdio.h> |
#include <assert.h> |
#include <sys/types.h> |
#include <libadt/hash_table.h> |
#include <adt/hash_table.h> |
#include <as.h> |
#include <libfs.h> |
54,10 → 54,8 |
#define min(a, b) ((a) < (b) ? (a) : (b)) |
#define max(a, b) ((a) > (b) ? (a) : (b)) |
#define DENTRIES_BUCKETS 256 |
#define NODES_BUCKETS 256 |
#define NAMES_BUCKETS 4 |
/** All root nodes have index 0. */ |
#define TMPFS_SOME_ROOT 0 |
/** Global counter for assigning node indices. Shared by all instances. */ |
68,36 → 66,36 |
*/ |
/* Forward declarations of static functions. */ |
static void *tmpfs_match(void *, const char *); |
static void *tmpfs_node_get(dev_handle_t, fs_index_t); |
static void tmpfs_node_put(void *); |
static void *tmpfs_create_node(dev_handle_t, int); |
static int tmpfs_link_node(void *, void *, const char *); |
static int tmpfs_unlink_node(void *, void *); |
static int tmpfs_destroy_node(void *); |
static fs_node_t *tmpfs_match(fs_node_t *, const char *); |
static fs_node_t *tmpfs_node_get(dev_handle_t, fs_index_t); |
static void tmpfs_node_put(fs_node_t *); |
static fs_node_t *tmpfs_create_node(dev_handle_t, int); |
static int tmpfs_link_node(fs_node_t *, fs_node_t *, const char *); |
static int tmpfs_unlink_node(fs_node_t *, fs_node_t *, const char *); |
static int tmpfs_destroy_node(fs_node_t *); |
/* Implementation of helper functions. */ |
static fs_index_t tmpfs_index_get(void *nodep) |
static fs_index_t tmpfs_index_get(fs_node_t *fn) |
{ |
return ((tmpfs_dentry_t *) nodep)->index; |
return TMPFS_NODE(fn)->index; |
} |
static size_t tmpfs_size_get(void *nodep) |
static size_t tmpfs_size_get(fs_node_t *fn) |
{ |
return ((tmpfs_dentry_t *) nodep)->size; |
return TMPFS_NODE(fn)->size; |
} |
static unsigned tmpfs_lnkcnt_get(void *nodep) |
static unsigned tmpfs_lnkcnt_get(fs_node_t *fn) |
{ |
return ((tmpfs_dentry_t *) nodep)->lnkcnt; |
return TMPFS_NODE(fn)->lnkcnt; |
} |
static bool tmpfs_has_children(void *nodep) |
static bool tmpfs_has_children(fs_node_t *fn) |
{ |
return ((tmpfs_dentry_t *) nodep)->child != NULL; |
return !list_empty(&TMPFS_NODE(fn)->cs_head); |
} |
static void *tmpfs_root_get(dev_handle_t dev_handle) |
static fs_node_t *tmpfs_root_get(dev_handle_t dev_handle) |
{ |
return tmpfs_node_get(dev_handle, TMPFS_SOME_ROOT); |
} |
107,14 → 105,14 |
return tmpfs_reg.plb_ro[pos % PLB_SIZE]; |
} |
static bool tmpfs_is_directory(void *nodep) |
static bool tmpfs_is_directory(fs_node_t *fn) |
{ |
return ((tmpfs_dentry_t *) nodep)->type == TMPFS_DIRECTORY; |
return TMPFS_NODE(fn)->type == TMPFS_DIRECTORY; |
} |
static bool tmpfs_is_file(void *nodep) |
static bool tmpfs_is_file(fs_node_t *fn) |
{ |
return ((tmpfs_dentry_t *) nodep)->type == TMPFS_FILE; |
return TMPFS_NODE(fn)->type == TMPFS_FILE; |
} |
/** libfs operations */ |
136,99 → 134,60 |
.is_file = tmpfs_is_file |
}; |
/** Hash table of all directory entries. */ |
hash_table_t dentries; |
/** Hash table of all TMPFS nodes. */ |
hash_table_t nodes; |
#define DENTRIES_KEY_INDEX 0 |
#define DENTRIES_KEY_DEV 1 |
#define NODES_KEY_INDEX 0 |
#define NODES_KEY_DEV 1 |
/* Implementation of hash table interface for the dentries hash table. */ |
static hash_index_t dentries_hash(unsigned long key[]) |
/* Implementation of hash table interface for the nodes hash table. */ |
static hash_index_t nodes_hash(unsigned long key[]) |
{ |
return key[DENTRIES_KEY_INDEX] % DENTRIES_BUCKETS; |
return key[NODES_KEY_INDEX] % NODES_BUCKETS; |
} |
static int dentries_compare(unsigned long key[], hash_count_t keys, |
link_t *item) |
static int nodes_compare(unsigned long key[], hash_count_t keys, link_t *item) |
{ |
tmpfs_dentry_t *dentry = hash_table_get_instance(item, tmpfs_dentry_t, |
dh_link); |
return (dentry->index == key[DENTRIES_KEY_INDEX] && |
dentry->dev_handle == key[DENTRIES_KEY_DEV]); |
tmpfs_node_t *nodep = hash_table_get_instance(item, tmpfs_node_t, |
nh_link); |
return (nodep->index == key[NODES_KEY_INDEX] && |
nodep->dev_handle == key[NODES_KEY_DEV]); |
} |
static void dentries_remove_callback(link_t *item) |
static void nodes_remove_callback(link_t *item) |
{ |
} |
/** TMPFS dentries hash table operations. */ |
hash_table_operations_t dentries_ops = { |
.hash = dentries_hash, |
.compare = dentries_compare, |
.remove_callback = dentries_remove_callback |
/** TMPFS nodes hash table operations. */ |
hash_table_operations_t nodes_ops = { |
.hash = nodes_hash, |
.compare = nodes_compare, |
.remove_callback = nodes_remove_callback |
}; |
typedef struct { |
char *name; |
tmpfs_dentry_t *parent; |
link_t link; |
} tmpfs_name_t; |
/* Implementation of hash table interface for the names hash table. */ |
static hash_index_t names_hash(unsigned long *key) |
static void tmpfs_node_initialize(tmpfs_node_t *nodep) |
{ |
tmpfs_dentry_t *dentry = (tmpfs_dentry_t *) *key; |
return dentry->index % NAMES_BUCKETS; |
nodep->bp = NULL; |
nodep->index = 0; |
nodep->dev_handle = 0; |
nodep->type = TMPFS_NONE; |
nodep->lnkcnt = 0; |
nodep->size = 0; |
nodep->data = NULL; |
link_initialize(&nodep->nh_link); |
list_initialize(&nodep->cs_head); |
} |
static int names_compare(unsigned long *key, hash_count_t keys, link_t *item) |
static void tmpfs_dentry_initialize(tmpfs_dentry_t *dentryp) |
{ |
tmpfs_dentry_t *dentry = (tmpfs_dentry_t *) *key; |
tmpfs_name_t *namep = hash_table_get_instance(item, tmpfs_name_t, |
link); |
return dentry == namep->parent; |
link_initialize(&dentryp->link); |
dentryp->name = NULL; |
dentryp->node = NULL; |
} |
static void names_remove_callback(link_t *item) |
{ |
tmpfs_name_t *namep = hash_table_get_instance(item, tmpfs_name_t, |
link); |
free(namep->name); |
free(namep); |
} |
/** TMPFS node names hash table operations. */ |
static hash_table_operations_t names_ops = { |
.hash = names_hash, |
.compare = names_compare, |
.remove_callback = names_remove_callback |
}; |
static void tmpfs_name_initialize(tmpfs_name_t *namep) |
{ |
namep->name = NULL; |
namep->parent = NULL; |
link_initialize(&namep->link); |
} |
static bool tmpfs_dentry_initialize(tmpfs_dentry_t *dentry) |
{ |
dentry->index = 0; |
dentry->dev_handle = 0; |
dentry->sibling = NULL; |
dentry->child = NULL; |
dentry->type = TMPFS_NONE; |
dentry->lnkcnt = 0; |
dentry->size = 0; |
dentry->data = NULL; |
link_initialize(&dentry->dh_link); |
return (bool)hash_table_create(&dentry->names, NAMES_BUCKETS, 1, |
&names_ops); |
} |
bool tmpfs_init(void) |
{ |
if (!hash_table_create(&dentries, DENTRIES_BUCKETS, 2, &dentries_ops)) |
if (!hash_table_create(&nodes, NODES_BUCKETS, 2, &nodes_ops)) |
return false; |
return true; |
236,181 → 195,170 |
static bool tmpfs_instance_init(dev_handle_t dev_handle) |
{ |
tmpfs_dentry_t *root; |
fs_node_t *rfn; |
root = (tmpfs_dentry_t *) tmpfs_create_node(dev_handle, L_DIRECTORY); |
if (!root) |
rfn = tmpfs_create_node(dev_handle, L_DIRECTORY); |
if (!rfn) |
return false; |
root->lnkcnt = 0; /* FS root is not linked */ |
TMPFS_NODE(rfn)->lnkcnt = 0; /* FS root is not linked */ |
return true; |
} |
/** Compare one component of path to a directory entry. |
* |
* @param parentp Pointer to node from which we descended. |
* @param childp Pointer to node to compare the path component with. |
* @param component Array of characters holding component name. |
* |
* @return True on match, false otherwise. |
*/ |
static bool |
tmpfs_match_one(tmpfs_dentry_t *parentp, tmpfs_dentry_t *childp, |
const char *component) |
fs_node_t *tmpfs_match(fs_node_t *pfn, const char *component) |
{ |
unsigned long key = (unsigned long) parentp; |
link_t *hlp = hash_table_find(&childp->names, &key); |
assert(hlp); |
tmpfs_name_t *namep = hash_table_get_instance(hlp, tmpfs_name_t, link); |
return !str_cmp(namep->name, component); |
} |
tmpfs_node_t *parentp = TMPFS_NODE(pfn); |
link_t *lnk; |
void *tmpfs_match(void *prnt, const char *component) |
{ |
tmpfs_dentry_t *parentp = (tmpfs_dentry_t *) prnt; |
tmpfs_dentry_t *childp = parentp->child; |
for (lnk = parentp->cs_head.next; lnk != &parentp->cs_head; |
lnk = lnk->next) { |
tmpfs_dentry_t *dentryp = list_get_instance(lnk, tmpfs_dentry_t, |
link); |
if (!str_cmp(dentryp->name, component)) |
return FS_NODE(dentryp->node); |
} |
while (childp && !tmpfs_match_one(parentp, childp, component)) |
childp = childp->sibling; |
return (void *) childp; |
return NULL; |
} |
void * |
tmpfs_node_get(dev_handle_t dev_handle, fs_index_t index) |
fs_node_t *tmpfs_node_get(dev_handle_t dev_handle, fs_index_t index) |
{ |
unsigned long key[] = { |
[DENTRIES_KEY_INDEX] = index, |
[DENTRIES_KEY_DEV] = dev_handle |
[NODES_KEY_INDEX] = index, |
[NODES_KEY_DEV] = dev_handle |
}; |
link_t *lnk = hash_table_find(&dentries, key); |
link_t *lnk = hash_table_find(&nodes, key); |
if (!lnk) |
return NULL; |
return hash_table_get_instance(lnk, tmpfs_dentry_t, dh_link); |
return FS_NODE(hash_table_get_instance(lnk, tmpfs_node_t, nh_link)); |
} |
void tmpfs_node_put(void *node) |
void tmpfs_node_put(fs_node_t *fn) |
{ |
/* nothing to do */ |
} |
void *tmpfs_create_node(dev_handle_t dev_handle, int lflag) |
fs_node_t *tmpfs_create_node(dev_handle_t dev_handle, int lflag) |
{ |
assert((lflag & L_FILE) ^ (lflag & L_DIRECTORY)); |
tmpfs_dentry_t *node = malloc(sizeof(tmpfs_dentry_t)); |
if (!node) |
tmpfs_node_t *nodep = malloc(sizeof(tmpfs_node_t)); |
if (!nodep) |
return NULL; |
if (!tmpfs_dentry_initialize(node)) { |
free(node); |
tmpfs_node_initialize(nodep); |
nodep->bp = malloc(sizeof(fs_node_t)); |
if (!nodep->bp) { |
free(nodep); |
return NULL; |
} |
fs_node_initialize(nodep->bp); |
nodep->bp->data = nodep; /* link the FS and TMPFS nodes */ |
if (!tmpfs_root_get(dev_handle)) |
node->index = TMPFS_SOME_ROOT; |
nodep->index = TMPFS_SOME_ROOT; |
else |
node->index = tmpfs_next_index++; |
node->dev_handle = dev_handle; |
nodep->index = tmpfs_next_index++; |
nodep->dev_handle = dev_handle; |
if (lflag & L_DIRECTORY) |
node->type = TMPFS_DIRECTORY; |
nodep->type = TMPFS_DIRECTORY; |
else |
node->type = TMPFS_FILE; |
nodep->type = TMPFS_FILE; |
/* Insert the new node into the dentry hash table. */ |
/* Insert the new node into the nodes hash table. */ |
unsigned long key[] = { |
[DENTRIES_KEY_INDEX] = node->index, |
[DENTRIES_KEY_DEV] = node->dev_handle |
[NODES_KEY_INDEX] = nodep->index, |
[NODES_KEY_DEV] = nodep->dev_handle |
}; |
hash_table_insert(&dentries, key, &node->dh_link); |
return (void *) node; |
hash_table_insert(&nodes, key, &nodep->nh_link); |
return FS_NODE(nodep); |
} |
int tmpfs_link_node(void *prnt, void *chld, const char *nm) |
int tmpfs_link_node(fs_node_t *pfn, fs_node_t *cfn, const char *nm) |
{ |
tmpfs_dentry_t *parentp = (tmpfs_dentry_t *) prnt; |
tmpfs_dentry_t *childp = (tmpfs_dentry_t *) chld; |
tmpfs_node_t *parentp = TMPFS_NODE(pfn); |
tmpfs_node_t *childp = TMPFS_NODE(cfn); |
tmpfs_dentry_t *dentryp; |
link_t *lnk; |
assert(parentp->type == TMPFS_DIRECTORY); |
tmpfs_name_t *namep = malloc(sizeof(tmpfs_name_t)); |
if (!namep) |
/* Check for duplicit entries. */ |
for (lnk = parentp->cs_head.next; lnk != &parentp->cs_head; |
lnk = lnk->next) { |
dentryp = list_get_instance(lnk, tmpfs_dentry_t, link); |
if (!str_cmp(dentryp->name, nm)) |
return EEXIST; |
} |
/* Allocate and initialize the dentry. */ |
dentryp = malloc(sizeof(tmpfs_dentry_t)); |
if (!dentryp) |
return ENOMEM; |
tmpfs_name_initialize(namep); |
tmpfs_dentry_initialize(dentryp); |
/* Populate and link the new dentry. */ |
size_t size = str_size(nm); |
namep->name = malloc(size + 1); |
if (!namep->name) { |
free(namep); |
dentryp->name = malloc(size + 1); |
if (!dentryp->name) { |
free(dentryp); |
return ENOMEM; |
} |
str_cpy(namep->name, size + 1, nm); |
namep->parent = parentp; |
str_cpy(dentryp->name, size + 1, nm); |
dentryp->node = childp; |
childp->lnkcnt++; |
list_append(&dentryp->link, &parentp->cs_head); |
unsigned long key = (unsigned long) parentp; |
hash_table_insert(&childp->names, &key, &namep->link); |
/* Insert the new node into the namespace. */ |
if (parentp->child) { |
tmpfs_dentry_t *tmp = parentp->child; |
while (tmp->sibling) |
tmp = tmp->sibling; |
tmp->sibling = childp; |
} else { |
parentp->child = childp; |
} |
return EOK; |
} |
int tmpfs_unlink_node(void *prnt, void *chld) |
int tmpfs_unlink_node(fs_node_t *pfn, fs_node_t *cfn, const char *nm) |
{ |
tmpfs_dentry_t *parentp = (tmpfs_dentry_t *)prnt; |
tmpfs_dentry_t *childp = (tmpfs_dentry_t *)chld; |
tmpfs_node_t *parentp = TMPFS_NODE(pfn); |
tmpfs_node_t *childp = NULL; |
tmpfs_dentry_t *dentryp; |
link_t *lnk; |
if (!parentp) |
return EBUSY; |
for (lnk = parentp->cs_head.next; lnk != &parentp->cs_head; |
lnk = lnk->next) { |
dentryp = list_get_instance(lnk, tmpfs_dentry_t, link); |
if (!str_cmp(dentryp->name, nm)) { |
childp = dentryp->node; |
assert(FS_NODE(childp) == cfn); |
break; |
} |
} |
if (childp->child) |
if (!childp) |
return ENOENT; |
if ((childp->lnkcnt == 1) && !list_empty(&childp->cs_head)) |
return ENOTEMPTY; |
if (parentp->child == childp) { |
parentp->child = childp->sibling; |
} else { |
/* TODO: consider doubly linked list for organizing siblings. */ |
tmpfs_dentry_t *tmp = parentp->child; |
while (tmp->sibling != childp) |
tmp = tmp->sibling; |
tmp->sibling = childp->sibling; |
} |
childp->sibling = NULL; |
unsigned long key = (unsigned long) parentp; |
hash_table_remove(&childp->names, &key, 1); |
list_remove(&dentryp->link); |
free(dentryp); |
childp->lnkcnt--; |
return EOK; |
} |
int tmpfs_destroy_node(void *nodep) |
int tmpfs_destroy_node(fs_node_t *fn) |
{ |
tmpfs_dentry_t *dentry = (tmpfs_dentry_t *) nodep; |
tmpfs_node_t *nodep = TMPFS_NODE(fn); |
assert(!dentry->lnkcnt); |
assert(!dentry->child); |
assert(!dentry->sibling); |
assert(!nodep->lnkcnt); |
assert(list_empty(&nodep->cs_head)); |
unsigned long key[] = { |
[DENTRIES_KEY_INDEX] = dentry->index, |
[DENTRIES_KEY_DEV] = dentry->dev_handle |
[NODES_KEY_INDEX] = nodep->index, |
[NODES_KEY_DEV] = nodep->dev_handle |
}; |
hash_table_remove(&dentries, key, 2); |
hash_table_remove(&nodes, key, 2); |
hash_table_destroy(&dentry->names); |
if (dentry->type == TMPFS_FILE) |
free(dentry->data); |
free(dentry); |
if (nodep->type == TMPFS_FILE) |
free(nodep->data); |
free(nodep->bp); |
free(nodep); |
return EOK; |
} |
446,26 → 394,22 |
return; |
} |
tmpfs_dentry_t *root = tmpfs_root_get(dev_handle); |
tmpfs_node_t *rootp = TMPFS_NODE(tmpfs_root_get(dev_handle)); |
if (str_cmp(opts, "restore") == 0) { |
if (tmpfs_restore(dev_handle)) |
ipc_answer_3(rid, EOK, root->index, root->size, |
root->lnkcnt); |
ipc_answer_3(rid, EOK, rootp->index, rootp->size, |
rootp->lnkcnt); |
else |
ipc_answer_0(rid, ELIMIT); |
} else { |
ipc_answer_3(rid, EOK, root->index, root->size, root->lnkcnt); |
ipc_answer_3(rid, EOK, rootp->index, rootp->size, |
rootp->lnkcnt); |
} |
} |
void tmpfs_mount(ipc_callid_t rid, ipc_call_t *request) |
{ |
dev_handle_t mp_dev_handle = (dev_handle_t) IPC_GET_ARG1(*request); |
fs_index_t mp_index = (fs_index_t) IPC_GET_ARG2(*request); |
fs_handle_t mr_fs_handle = (fs_handle_t) IPC_GET_ARG3(*request); |
dev_handle_t mr_dev_handle = (dev_handle_t) IPC_GET_ARG4(*request); |
ipc_answer_0(rid, ENOTSUP); |
libfs_mount(&tmpfs_libfs_ops, tmpfs_reg.fs_handle, rid, request); |
} |
void tmpfs_lookup(ipc_callid_t rid, ipc_call_t *request) |
480,20 → 424,20 |
off_t pos = (off_t)IPC_GET_ARG3(*request); |
/* |
* Lookup the respective dentry. |
* Lookup the respective TMPFS node. |
*/ |
link_t *hlp; |
unsigned long key[] = { |
[DENTRIES_KEY_INDEX] = index, |
[DENTRIES_KEY_DEV] = dev_handle, |
[NODES_KEY_INDEX] = index, |
[NODES_KEY_DEV] = dev_handle, |
}; |
hlp = hash_table_find(&dentries, key); |
hlp = hash_table_find(&nodes, key); |
if (!hlp) { |
ipc_answer_0(rid, ENOENT); |
return; |
} |
tmpfs_dentry_t *dentry = hash_table_get_instance(hlp, tmpfs_dentry_t, |
dh_link); |
tmpfs_node_t *nodep = hash_table_get_instance(hlp, tmpfs_node_t, |
nh_link); |
/* |
* Receive the read request. |
507,15 → 451,16 |
} |
size_t bytes; |
if (dentry->type == TMPFS_FILE) { |
bytes = max(0, min(dentry->size - pos, size)); |
(void) ipc_data_read_finalize(callid, dentry->data + pos, |
if (nodep->type == TMPFS_FILE) { |
bytes = max(0, min(nodep->size - pos, size)); |
(void) ipc_data_read_finalize(callid, nodep->data + pos, |
bytes); |
} else { |
tmpfs_dentry_t *dentryp; |
link_t *lnk; |
int i; |
tmpfs_dentry_t *cur; |
assert(dentry->type == TMPFS_DIRECTORY); |
assert(nodep->type == TMPFS_DIRECTORY); |
/* |
* Yes, we really use O(n) algorithm here. |
522,24 → 467,21 |
* If it bothers someone, it could be fixed by introducing a |
* hash table. |
*/ |
for (i = 0, cur = dentry->child; i < pos && cur; i++, |
cur = cur->sibling) |
for (i = 0, lnk = nodep->cs_head.next; |
i < pos && lnk != &nodep->cs_head; |
i++, lnk = lnk->next) |
; |
if (!cur) { |
if (lnk == &nodep->cs_head) { |
ipc_answer_0(callid, ENOENT); |
ipc_answer_1(rid, ENOENT, 0); |
return; |
} |
unsigned long key = (unsigned long) dentry; |
link_t *hlp = hash_table_find(&cur->names, &key); |
assert(hlp); |
tmpfs_name_t *namep = hash_table_get_instance(hlp, tmpfs_name_t, |
link); |
dentryp = list_get_instance(lnk, tmpfs_dentry_t, link); |
(void) ipc_data_read_finalize(callid, namep->name, |
str_size(namep->name) + 1); |
(void) ipc_data_read_finalize(callid, dentryp->name, |
str_size(dentryp->name) + 1); |
bytes = 1; |
} |
556,20 → 498,20 |
off_t pos = (off_t)IPC_GET_ARG3(*request); |
/* |
* Lookup the respective dentry. |
* Lookup the respective TMPFS node. |
*/ |
link_t *hlp; |
unsigned long key[] = { |
[DENTRIES_KEY_INDEX] = index, |
[DENTRIES_KEY_DEV] = dev_handle |
[NODES_KEY_INDEX] = index, |
[NODES_KEY_DEV] = dev_handle |
}; |
hlp = hash_table_find(&dentries, key); |
hlp = hash_table_find(&nodes, key); |
if (!hlp) { |
ipc_answer_0(rid, ENOENT); |
return; |
} |
tmpfs_dentry_t *dentry = hash_table_get_instance(hlp, tmpfs_dentry_t, |
dh_link); |
tmpfs_node_t *nodep = hash_table_get_instance(hlp, tmpfs_node_t, |
nh_link); |
/* |
* Receive the write request. |
585,13 → 527,13 |
/* |
* Check whether the file needs to grow. |
*/ |
if (pos + size <= dentry->size) { |
if (pos + size <= nodep->size) { |
/* The file size is not changing. */ |
(void) ipc_data_write_finalize(callid, dentry->data + pos, size); |
ipc_answer_2(rid, EOK, size, dentry->size); |
(void) ipc_data_write_finalize(callid, nodep->data + pos, size); |
ipc_answer_2(rid, EOK, size, nodep->size); |
return; |
} |
size_t delta = (pos + size) - dentry->size; |
size_t delta = (pos + size) - nodep->size; |
/* |
* At this point, we are deliberately extremely straightforward and |
* simply realloc the contents of the file on every write that grows the |
599,18 → 541,18 |
* our heap allocator can save us and just grow the block whenever |
* possible. |
*/ |
void *newdata = realloc(dentry->data, dentry->size + delta); |
void *newdata = realloc(nodep->data, nodep->size + delta); |
if (!newdata) { |
ipc_answer_0(callid, ENOMEM); |
ipc_answer_2(rid, EOK, 0, dentry->size); |
ipc_answer_2(rid, EOK, 0, nodep->size); |
return; |
} |
/* Clear any newly allocated memory in order to emulate gaps. */ |
memset(newdata + dentry->size, 0, delta); |
dentry->size += delta; |
dentry->data = newdata; |
(void) ipc_data_write_finalize(callid, dentry->data + pos, size); |
ipc_answer_2(rid, EOK, size, dentry->size); |
memset(newdata + nodep->size, 0, delta); |
nodep->size += delta; |
nodep->data = newdata; |
(void) ipc_data_write_finalize(callid, nodep->data + pos, size); |
ipc_answer_2(rid, EOK, size, nodep->size); |
} |
void tmpfs_truncate(ipc_callid_t rid, ipc_call_t *request) |
620,40 → 562,45 |
size_t size = (off_t)IPC_GET_ARG3(*request); |
/* |
* Lookup the respective dentry. |
* Lookup the respective TMPFS node. |
*/ |
link_t *hlp; |
unsigned long key[] = { |
[DENTRIES_KEY_INDEX] = index, |
[DENTRIES_KEY_DEV] = dev_handle |
[NODES_KEY_INDEX] = index, |
[NODES_KEY_DEV] = dev_handle |
}; |
hlp = hash_table_find(&dentries, key); |
hlp = hash_table_find(&nodes, key); |
if (!hlp) { |
ipc_answer_0(rid, ENOENT); |
return; |
} |
tmpfs_dentry_t *dentry = hash_table_get_instance(hlp, tmpfs_dentry_t, |
dh_link); |
tmpfs_node_t *nodep = hash_table_get_instance(hlp, tmpfs_node_t, |
nh_link); |
if (size == dentry->size) { |
if (size == nodep->size) { |
ipc_answer_0(rid, EOK); |
return; |
} |
void *newdata = realloc(dentry->data, size); |
void *newdata = realloc(nodep->data, size); |
if (!newdata) { |
ipc_answer_0(rid, ENOMEM); |
return; |
} |
if (size > dentry->size) { |
size_t delta = size - dentry->size; |
memset(newdata + dentry->size, 0, delta); |
if (size > nodep->size) { |
size_t delta = size - nodep->size; |
memset(newdata + nodep->size, 0, delta); |
} |
dentry->size = size; |
dentry->data = newdata; |
nodep->size = size; |
nodep->data = newdata; |
ipc_answer_0(rid, EOK); |
} |
void tmpfs_close(ipc_callid_t rid, ipc_call_t *request) |
{ |
ipc_answer_0(rid, EOK); |
} |
void tmpfs_destroy(ipc_callid_t rid, ipc_call_t *request) |
{ |
dev_handle_t dev_handle = (dev_handle_t)IPC_GET_ARG1(*request); |
662,20 → 609,36 |
link_t *hlp; |
unsigned long key[] = { |
[DENTRIES_KEY_INDEX] = index, |
[DENTRIES_KEY_DEV] = dev_handle |
[NODES_KEY_INDEX] = index, |
[NODES_KEY_DEV] = dev_handle |
}; |
hlp = hash_table_find(&dentries, key); |
hlp = hash_table_find(&nodes, key); |
if (!hlp) { |
ipc_answer_0(rid, ENOENT); |
return; |
} |
tmpfs_dentry_t *dentry = hash_table_get_instance(hlp, tmpfs_dentry_t, |
dh_link); |
rc = tmpfs_destroy_node(dentry); |
tmpfs_node_t *nodep = hash_table_get_instance(hlp, tmpfs_node_t, |
nh_link); |
rc = tmpfs_destroy_node(FS_NODE(nodep)); |
ipc_answer_0(rid, rc); |
} |
void tmpfs_open_node(ipc_callid_t rid, ipc_call_t *request) |
{ |
libfs_open_node(&tmpfs_libfs_ops, tmpfs_reg.fs_handle, rid, request); |
} |
void tmpfs_device(ipc_callid_t rid, ipc_call_t *request) |
{ |
ipc_answer_0(rid, ENOTSUP); |
} |
void tmpfs_sync(ipc_callid_t rid, ipc_call_t *request) |
{ |
/* Dummy implementation */ |
ipc_answer_0(rid, EOK); |
} |
/** |
* @} |
*/ |
*/ |
/branches/network/uspace/srv/fs/tmpfs/Makefile |
---|
72,7 → 72,7 |
disasm: $(OUTPUT).disasm |
$(OUTPUT).disasm: $(OUTPUT) |
$(OBJDUMP) -d $< >$@ |
$(OBJDUMP) -d $< > $@ |
%.o: %.S |
$(CC) $(DEFS) $(AFLAGS) $(CFLAGS) -D__ASM__ -c $< -o $@ |
/branches/network/uspace/srv/fs/fat/fat_idx.c |
---|
39,10 → 39,10 |
#include "../../vfs/vfs.h" |
#include <errno.h> |
#include <string.h> |
#include <libadt/hash_table.h> |
#include <libadt/list.h> |
#include <adt/hash_table.h> |
#include <adt/list.h> |
#include <assert.h> |
#include <futex.h> |
#include <fibril_sync.h> |
/** Each instance of this type describes one interval of freed VFS indices. */ |
typedef struct { |
68,8 → 68,8 |
link_t freed_head; |
} unused_t; |
/** Futex protecting the list of unused structures. */ |
static futex_t unused_futex = FUTEX_INITIALIZER; |
/** Mutex protecting the list of unused structures. */ |
static FIBRIL_MUTEX_INITIALIZE(unused_lock); |
/** List of unused structures. */ |
static LIST_INITIALIZE(unused_head); |
89,7 → 89,7 |
link_t *l; |
if (lock) |
futex_down(&unused_futex); |
fibril_mutex_lock(&unused_lock); |
for (l = unused_head.next; l != &unused_head; l = l->next) { |
u = list_get_instance(l, unused_t, link); |
if (u->dev_handle == dev_handle) |
96,12 → 96,12 |
return u; |
} |
if (lock) |
futex_up(&unused_futex); |
fibril_mutex_unlock(&unused_lock); |
return NULL; |
} |
/** Futex protecting the up_hash and ui_hash. */ |
static futex_t used_futex = FUTEX_INITIALIZER; |
/** Mutex protecting the up_hash and ui_hash. */ |
static FIBRIL_MUTEX_INITIALIZE(used_lock); |
/** |
* Global hash table of all used fat_idx_t structures. |
231,7 → 231,7 |
*/ |
*index = u->next++; |
--u->remaining; |
futex_up(&unused_futex); |
fibril_mutex_unlock(&unused_lock); |
return true; |
} |
} else { |
244,7 → 244,7 |
list_remove(&f->link); |
free(f); |
} |
futex_up(&unused_futex); |
fibril_mutex_unlock(&unused_lock); |
return true; |
} |
/* |
252,7 → 252,7 |
* theoretically still possible (e.g. too many open unlinked nodes or |
* too many zero-sized nodes). |
*/ |
futex_up(&unused_futex); |
fibril_mutex_unlock(&unused_lock); |
return false; |
} |
302,7 → 302,7 |
if (lnk->prev != &u->freed_head) |
try_coalesce_intervals(lnk->prev, lnk, |
lnk); |
futex_up(&unused_futex); |
fibril_mutex_unlock(&unused_lock); |
return; |
} |
if (f->last == index - 1) { |
310,7 → 310,7 |
if (lnk->next != &u->freed_head) |
try_coalesce_intervals(lnk, lnk->next, |
lnk); |
futex_up(&unused_futex); |
fibril_mutex_unlock(&unused_lock); |
return; |
} |
if (index > f->first) { |
321,7 → 321,7 |
n->first = index; |
n->last = index; |
list_insert_before(&n->link, lnk); |
futex_up(&unused_futex); |
fibril_mutex_unlock(&unused_lock); |
return; |
} |
335,7 → 335,7 |
n->last = index; |
list_append(&n->link, &u->freed_head); |
} |
futex_up(&unused_futex); |
fibril_mutex_unlock(&unused_lock); |
} |
static fat_idx_t *fat_idx_create(dev_handle_t dev_handle) |
352,7 → 352,7 |
link_initialize(&fidx->uph_link); |
link_initialize(&fidx->uih_link); |
futex_initialize(&fidx->lock, 1); |
fibril_mutex_initialize(&fidx->lock); |
fidx->dev_handle = dev_handle; |
fidx->pfc = FAT_CLST_RES0; /* no parent yet */ |
fidx->pdi = 0; |
365,10 → 365,10 |
{ |
fat_idx_t *fidx; |
futex_down(&used_futex); |
fibril_mutex_lock(&used_lock); |
fidx = fat_idx_create(dev_handle); |
if (!fidx) { |
futex_up(&used_futex); |
fibril_mutex_unlock(&used_lock); |
return NULL; |
} |
378,8 → 378,8 |
}; |
hash_table_insert(&ui_hash, ikey, &fidx->uih_link); |
futex_down(&fidx->lock); |
futex_up(&used_futex); |
fibril_mutex_lock(&fidx->lock); |
fibril_mutex_unlock(&used_lock); |
return fidx; |
} |
395,7 → 395,7 |
[UPH_PDI_KEY] = pdi, |
}; |
futex_down(&used_futex); |
fibril_mutex_lock(&used_lock); |
l = hash_table_find(&up_hash, pkey); |
if (l) { |
fidx = hash_table_get_instance(l, fat_idx_t, uph_link); |
402,7 → 402,7 |
} else { |
fidx = fat_idx_create(dev_handle); |
if (!fidx) { |
futex_up(&used_futex); |
fibril_mutex_unlock(&used_lock); |
return NULL; |
} |
417,8 → 417,8 |
hash_table_insert(&up_hash, pkey, &fidx->uph_link); |
hash_table_insert(&ui_hash, ikey, &fidx->uih_link); |
} |
futex_down(&fidx->lock); |
futex_up(&used_futex); |
fibril_mutex_lock(&fidx->lock); |
fibril_mutex_unlock(&used_lock); |
return fidx; |
} |
431,9 → 431,9 |
[UPH_PDI_KEY] = idx->pdi, |
}; |
futex_down(&used_futex); |
fibril_mutex_lock(&used_lock); |
hash_table_insert(&up_hash, pkey, &idx->uph_link); |
futex_up(&used_futex); |
fibril_mutex_unlock(&used_lock); |
} |
void fat_idx_hashout(fat_idx_t *idx) |
444,9 → 444,9 |
[UPH_PDI_KEY] = idx->pdi, |
}; |
futex_down(&used_futex); |
fibril_mutex_lock(&used_lock); |
hash_table_remove(&up_hash, pkey, 3); |
futex_up(&used_futex); |
fibril_mutex_unlock(&used_lock); |
} |
fat_idx_t * |
459,13 → 459,13 |
[UIH_INDEX_KEY] = index, |
}; |
futex_down(&used_futex); |
fibril_mutex_lock(&used_lock); |
l = hash_table_find(&ui_hash, ikey); |
if (l) { |
fidx = hash_table_get_instance(l, fat_idx_t, uih_link); |
futex_down(&fidx->lock); |
fibril_mutex_lock(&fidx->lock); |
} |
futex_up(&used_futex); |
fibril_mutex_unlock(&used_lock); |
return fidx; |
} |
483,7 → 483,7 |
assert(idx->pfc == FAT_CLST_RES0); |
futex_down(&used_futex); |
fibril_mutex_lock(&used_lock); |
/* |
* Since we can only free unlinked nodes, the index structure is not |
* present in the position hash (uph). We therefore hash it out from |
490,7 → 490,7 |
* the index hash only. |
*/ |
hash_table_remove(&ui_hash, ikey, 2); |
futex_up(&used_futex); |
fibril_mutex_unlock(&used_lock); |
/* Release the VFS index. */ |
fat_index_free(idx->dev_handle, idx->index); |
/* Deallocate the structure. */ |
524,12 → 524,12 |
if (!u) |
return ENOMEM; |
unused_initialize(u, dev_handle); |
futex_down(&unused_futex); |
fibril_mutex_lock(&unused_lock); |
if (!unused_find(dev_handle, false)) |
list_append(&u->link, &unused_head); |
else |
rc = EEXIST; |
futex_up(&unused_futex); |
fibril_mutex_unlock(&unused_lock); |
return rc; |
} |
540,7 → 540,7 |
u = unused_find(dev_handle, true); |
assert(u); |
list_remove(&u->link); |
futex_up(&unused_futex); |
fibril_mutex_unlock(&unused_lock); |
while (!list_empty(&u->freed_head)) { |
freed_t *f; |
/branches/network/uspace/srv/fs/fat/fat.h |
---|
35,6 → 35,7 |
#include "fat_fat.h" |
#include <ipc/ipc.h> |
#include <fibril_sync.h> |
#include <libfs.h> |
#include <atomic.h> |
#include <sys/types.h> |
160,7 → 161,7 |
/** Used indices (index) hash table link. */ |
link_t uih_link; |
futex_t lock; |
fibril_mutex_t lock; |
dev_handle_t dev_handle; |
fs_index_t index; |
/** |
178,7 → 179,10 |
/** FAT in-core node. */ |
typedef struct fat_node { |
futex_t lock; |
/** Back pointer to the FS node. */ |
fs_node_t *bp; |
fibril_mutex_t lock; |
fat_node_type_t type; |
fat_idx_t *idx; |
/** |
203,7 → 207,11 |
extern void fat_read(ipc_callid_t, ipc_call_t *); |
extern void fat_write(ipc_callid_t, ipc_call_t *); |
extern void fat_truncate(ipc_callid_t, ipc_call_t *); |
extern void fat_close(ipc_callid_t, ipc_call_t *); |
extern void fat_destroy(ipc_callid_t, ipc_call_t *); |
extern void fat_open_node(ipc_callid_t, ipc_call_t *); |
extern void fat_device(ipc_callid_t, ipc_call_t *); |
extern void fat_sync(ipc_callid_t, ipc_call_t *); |
extern fat_idx_t *fat_idx_get_new(dev_handle_t); |
extern fat_idx_t *fat_idx_get_by_pos(dev_handle_t, fat_cluster_t, unsigned); |
/branches/network/uspace/srv/fs/fat/fat_dentry.c |
---|
114,37 → 114,51 |
void fat_dentry_name_get(const fat_dentry_t *d, char *buf) |
{ |
int i; |
unsigned int i; |
for (i = 0; i < FAT_NAME_LEN; i++) { |
if (d->name[i] == FAT_PAD) |
break; |
if (d->name[i] == FAT_DENTRY_E5_ESC) |
*buf++ = 0xe5; |
else |
*buf++ = d->name[i]; |
else { |
if (d->lcase & FAT_LCASE_LOWER_NAME) |
*buf++ = tolower(d->name[i]); |
else |
*buf++ = d->name[i]; |
} |
} |
if (d->ext[0] != FAT_PAD) |
*buf++ = '.'; |
for (i = 0; i < FAT_EXT_LEN; i++) { |
if (d->ext[i] == FAT_PAD) { |
*buf = '\0'; |
return; |
} |
if (d->ext[i] == FAT_DENTRY_E5_ESC) |
*buf++ = 0xe5; |
else |
*buf++ = d->ext[i]; |
else { |
if (d->lcase & FAT_LCASE_LOWER_EXT) |
*buf++ = tolower(d->ext[i]); |
else |
*buf++ = d->ext[i]; |
} |
} |
*buf = '\0'; |
} |
void fat_dentry_name_set(fat_dentry_t *d, const char *name) |
{ |
int i; |
unsigned int i; |
const char fake_ext[] = " "; |
bool lower_name = true; |
bool lower_ext = true; |
for (i = 0; i < FAT_NAME_LEN; i++) { |
switch ((uint8_t) *name) { |
case 0xe5: |
156,12 → 170,19 |
d->name[i] = FAT_PAD; |
break; |
default: |
if (isalpha(*name)) { |
if (!islower(*name)) |
lower_name = false; |
} |
d->name[i] = toupper(*name++); |
break; |
} |
} |
if (*name++ != '.') |
name = fake_ext; |
for (i = 0; i < FAT_EXT_LEN; i++) { |
switch ((uint8_t) *name) { |
case 0xe5: |
172,10 → 193,25 |
d->ext[i] = FAT_PAD; |
break; |
default: |
if (isalpha(*name)) { |
if (!islower(*name)) |
lower_ext = false; |
} |
d->ext[i] = toupper(*name++); |
break; |
} |
} |
if (lower_name) |
d->lcase |= FAT_LCASE_LOWER_NAME; |
else |
d->lcase &= ~FAT_LCASE_LOWER_NAME; |
if (lower_ext) |
d->lcase |= FAT_LCASE_LOWER_EXT; |
else |
d->lcase &= ~FAT_LCASE_LOWER_EXT; |
} |
fat_dentry_clsf_t fat_classify_dentry(const fat_dentry_t *d) |
/branches/network/uspace/srv/fs/fat/fat_dentry.h |
---|
47,6 → 47,9 |
#define FAT_ATTR_VOLLABEL (1 << 3) |
#define FAT_ATTR_SUBDIR (1 << 4) |
#define FAT_LCASE_LOWER_NAME 0x08 |
#define FAT_LCASE_LOWER_EXT 0x10 |
#define FAT_PAD ' ' |
#define FAT_DENTRY_UNUSED 0x00 |
65,7 → 68,7 |
uint8_t name[8]; |
uint8_t ext[3]; |
uint8_t attr; |
uint8_t reserved; |
uint8_t lcase; |
uint8_t ctime_fine; |
uint16_t ctime; |
uint16_t cdate; |
/branches/network/uspace/srv/fs/fat/fat_fat.c |
---|
45,14 → 45,15 |
#include <byteorder.h> |
#include <align.h> |
#include <assert.h> |
#include <futex.h> |
#include <fibril_sync.h> |
#include <mem.h> |
/** |
* The fat_alloc_lock futex protects all copies of the File Allocation Table |
* The fat_alloc_lock mutex protects all copies of the File Allocation Table |
* during allocation of clusters. The lock does not have to be held durring |
* deallocation of clusters. |
*/ |
static futex_t fat_alloc_lock = FUTEX_INITIALIZER; |
static FIBRIL_MUTEX_INITIALIZE(fat_alloc_lock); |
/** Walk the cluster chain. |
* |
325,7 → 326,7 |
/* |
* Search FAT1 for unused clusters. |
*/ |
futex_down(&fat_alloc_lock); |
fibril_mutex_lock(&fat_alloc_lock); |
for (b = 0, cl = 0; b < sf; b++) { |
blk = block_get(dev_handle, rscnt + b, BLOCK_FLAGS_NONE); |
for (c = 0; c < bps / sizeof(fat_cluster_t); c++, cl++) { |
349,7 → 350,7 |
*mcl = lifo[found - 1]; |
*lcl = lifo[0]; |
free(lifo); |
futex_up(&fat_alloc_lock); |
fibril_mutex_unlock(&fat_alloc_lock); |
return EOK; |
} |
} |
356,7 → 357,7 |
} |
block_put(blk); |
} |
futex_up(&fat_alloc_lock); |
fibril_mutex_unlock(&fat_alloc_lock); |
/* |
* We could not find enough clusters. Now we need to free the clusters |
/branches/network/uspace/srv/fs/fat/fat.c |
---|
89,6 → 89,8 |
callid = async_get_call(&call); |
switch (IPC_GET_METHOD(call)) { |
case IPC_M_PHONE_HUNGUP: |
return; |
case VFS_MOUNTED: |
fat_mounted(callid, &call); |
break; |
107,9 → 109,21 |
case VFS_TRUNCATE: |
fat_truncate(callid, &call); |
break; |
case VFS_CLOSE: |
fat_close(callid, &call); |
break; |
case VFS_DESTROY: |
fat_destroy(callid, &call); |
break; |
case VFS_OPEN_NODE: |
fat_open_node(callid, &call); |
break; |
case VFS_DEVICE: |
fat_device(callid, &call); |
break; |
case VFS_SYNC: |
fat_sync(callid, &call); |
break; |
default: |
ipc_answer_0(callid, ENOTSUP); |
break; |
/branches/network/uspace/srv/fs/fat/fat_ops.c |
---|
48,22 → 48,26 |
#include <errno.h> |
#include <string.h> |
#include <byteorder.h> |
#include <libadt/hash_table.h> |
#include <libadt/list.h> |
#include <adt/hash_table.h> |
#include <adt/list.h> |
#include <assert.h> |
#include <futex.h> |
#include <fibril_sync.h> |
#include <sys/mman.h> |
#include <align.h> |
/** Futex protecting the list of cached free FAT nodes. */ |
static futex_t ffn_futex = FUTEX_INITIALIZER; |
#define FAT_NODE(node) ((node) ? (fat_node_t *) (node)->data : NULL) |
#define FS_NODE(node) ((node) ? (node)->bp : NULL) |
/** Mutex protecting the list of cached free FAT nodes. */ |
static FIBRIL_MUTEX_INITIALIZE(ffn_mutex); |
/** List of cached free FAT nodes. */ |
static LIST_INITIALIZE(ffn_head); |
static void fat_node_initialize(fat_node_t *node) |
{ |
futex_initialize(&node->lock, 1); |
fibril_mutex_initialize(&node->lock); |
node->bp = NULL; |
node->idx = NULL; |
node->type = 0; |
link_initialize(&node->ffn_link); |
108,36 → 112,46 |
static fat_node_t *fat_node_get_new(void) |
{ |
fs_node_t *fn; |
fat_node_t *nodep; |
futex_down(&ffn_futex); |
fibril_mutex_lock(&ffn_mutex); |
if (!list_empty(&ffn_head)) { |
/* Try to use a cached free node structure. */ |
fat_idx_t *idxp_tmp; |
nodep = list_get_instance(ffn_head.next, fat_node_t, ffn_link); |
if (futex_trydown(&nodep->lock) == ESYNCH_WOULD_BLOCK) |
if (!fibril_mutex_trylock(&nodep->lock)) |
goto skip_cache; |
idxp_tmp = nodep->idx; |
if (futex_trydown(&idxp_tmp->lock) == ESYNCH_WOULD_BLOCK) { |
futex_up(&nodep->lock); |
if (!fibril_mutex_trylock(&idxp_tmp->lock)) { |
fibril_mutex_unlock(&nodep->lock); |
goto skip_cache; |
} |
list_remove(&nodep->ffn_link); |
futex_up(&ffn_futex); |
fibril_mutex_unlock(&ffn_mutex); |
if (nodep->dirty) |
fat_node_sync(nodep); |
idxp_tmp->nodep = NULL; |
futex_up(&nodep->lock); |
futex_up(&idxp_tmp->lock); |
fibril_mutex_unlock(&nodep->lock); |
fibril_mutex_unlock(&idxp_tmp->lock); |
fn = FS_NODE(nodep); |
} else { |
skip_cache: |
/* Try to allocate a new node structure. */ |
futex_up(&ffn_futex); |
fibril_mutex_unlock(&ffn_mutex); |
fn = (fs_node_t *)malloc(sizeof(fs_node_t)); |
if (!fn) |
return NULL; |
nodep = (fat_node_t *)malloc(sizeof(fat_node_t)); |
if (!nodep) |
if (!nodep) { |
free(fn); |
return NULL; |
} |
} |
fat_node_initialize(nodep); |
fs_node_initialize(fn); |
fn->data = nodep; |
nodep->bp = fn; |
return nodep; |
} |
146,7 → 160,7 |
* |
* @param idxp Locked index structure. |
*/ |
static void *fat_node_get_core(fat_idx_t *idxp) |
static fat_node_t *fat_node_get_core(fat_idx_t *idxp) |
{ |
block_t *b; |
fat_bs_t *bs; |
161,10 → 175,10 |
* We are lucky. |
* The node is already instantiated in memory. |
*/ |
futex_down(&idxp->nodep->lock); |
fibril_mutex_lock(&idxp->nodep->lock); |
if (!idxp->nodep->refcnt++) |
list_remove(&idxp->nodep->ffn_link); |
futex_up(&idxp->nodep->lock); |
fibril_mutex_unlock(&idxp->nodep->lock); |
return idxp->nodep; |
} |
223,21 → 237,21 |
/* |
* Forward declarations of FAT libfs operations. |
*/ |
static void *fat_node_get(dev_handle_t, fs_index_t); |
static void fat_node_put(void *); |
static void *fat_create_node(dev_handle_t, int); |
static int fat_destroy_node(void *); |
static int fat_link(void *, void *, const char *); |
static int fat_unlink(void *, void *); |
static void *fat_match(void *, const char *); |
static fs_index_t fat_index_get(void *); |
static size_t fat_size_get(void *); |
static unsigned fat_lnkcnt_get(void *); |
static bool fat_has_children(void *); |
static void *fat_root_get(dev_handle_t); |
static fs_node_t *fat_node_get(dev_handle_t, fs_index_t); |
static void fat_node_put(fs_node_t *); |
static fs_node_t *fat_create_node(dev_handle_t, int); |
static int fat_destroy_node(fs_node_t *); |
static int fat_link(fs_node_t *, fs_node_t *, const char *); |
static int fat_unlink(fs_node_t *, fs_node_t *, const char *); |
static fs_node_t *fat_match(fs_node_t *, const char *); |
static fs_index_t fat_index_get(fs_node_t *); |
static size_t fat_size_get(fs_node_t *); |
static unsigned fat_lnkcnt_get(fs_node_t *); |
static bool fat_has_children(fs_node_t *); |
static fs_node_t *fat_root_get(dev_handle_t); |
static char fat_plb_get_char(unsigned); |
static bool fat_is_directory(void *); |
static bool fat_is_file(void *node); |
static bool fat_is_directory(fs_node_t *); |
static bool fat_is_file(fs_node_t *node); |
/* |
* FAT libfs operations. |
244,9 → 258,9 |
*/ |
/** Instantiate a FAT in-core node. */ |
void *fat_node_get(dev_handle_t dev_handle, fs_index_t index) |
fs_node_t *fat_node_get(dev_handle_t dev_handle, fs_index_t index) |
{ |
void *node; |
fat_node_t *nodep; |
fat_idx_t *idxp; |
idxp = fat_idx_get_by_index(dev_handle, index); |
253,22 → 267,22 |
if (!idxp) |
return NULL; |
/* idxp->lock held */ |
node = fat_node_get_core(idxp); |
futex_up(&idxp->lock); |
return node; |
nodep = fat_node_get_core(idxp); |
fibril_mutex_unlock(&idxp->lock); |
return FS_NODE(nodep); |
} |
void fat_node_put(void *node) |
void fat_node_put(fs_node_t *fn) |
{ |
fat_node_t *nodep = (fat_node_t *)node; |
fat_node_t *nodep = FAT_NODE(fn); |
bool destroy = false; |
futex_down(&nodep->lock); |
fibril_mutex_lock(&nodep->lock); |
if (!--nodep->refcnt) { |
if (nodep->idx) { |
futex_down(&ffn_futex); |
fibril_mutex_lock(&ffn_mutex); |
list_append(&nodep->ffn_link, &ffn_head); |
futex_up(&ffn_futex); |
fibril_mutex_unlock(&ffn_mutex); |
} else { |
/* |
* The node does not have any index structure associated |
279,12 → 293,14 |
destroy = true; |
} |
} |
futex_up(&nodep->lock); |
if (destroy) |
free(node); |
fibril_mutex_unlock(&nodep->lock); |
if (destroy) { |
free(nodep->bp); |
free(nodep); |
} |
} |
void *fat_create_node(dev_handle_t dev_handle, int flags) |
fs_node_t *fat_create_node(dev_handle_t dev_handle, int flags) |
{ |
fat_idx_t *idxp; |
fat_node_t *nodep; |
310,7 → 326,7 |
idxp = fat_idx_get_new(dev_handle); |
if (!idxp) { |
fat_free_clusters(bs, dev_handle, mcl); |
fat_node_put(nodep); |
fat_node_put(FS_NODE(nodep)); |
return NULL; |
} |
/* idxp->lock held */ |
344,13 → 360,13 |
nodep->idx = idxp; |
idxp->nodep = nodep; |
futex_up(&idxp->lock); |
return nodep; |
fibril_mutex_unlock(&idxp->lock); |
return FS_NODE(nodep); |
} |
int fat_destroy_node(void *node) |
int fat_destroy_node(fs_node_t *fn) |
{ |
fat_node_t *nodep = (fat_node_t *)node; |
fat_node_t *nodep = FAT_NODE(fn); |
fat_bs_t *bs; |
/* |
364,7 → 380,7 |
/* |
* The node may not have any children. |
*/ |
assert(fat_has_children(node) == false); |
assert(fat_has_children(fn) == false); |
bs = block_bb_get(nodep->idx->dev_handle); |
if (nodep->firstc != FAT_CLST_RES0) { |
374,14 → 390,15 |
} |
fat_idx_destroy(nodep->idx); |
free(nodep->bp); |
free(nodep); |
return EOK; |
} |
int fat_link(void *prnt, void *chld, const char *name) |
int fat_link(fs_node_t *pfn, fs_node_t *cfn, const char *name) |
{ |
fat_node_t *parentp = (fat_node_t *)prnt; |
fat_node_t *childp = (fat_node_t *)chld; |
fat_node_t *parentp = FAT_NODE(pfn); |
fat_node_t *childp = FAT_NODE(cfn); |
fat_dentry_t *d; |
fat_bs_t *bs; |
block_t *b; |
392,16 → 409,16 |
fat_cluster_t mcl, lcl; |
int rc; |
futex_down(&childp->lock); |
fibril_mutex_lock(&childp->lock); |
if (childp->lnkcnt == 1) { |
/* |
* On FAT, we don't support multiple hard links. |
*/ |
futex_up(&childp->lock); |
fibril_mutex_unlock(&childp->lock); |
return EMLINK; |
} |
assert(childp->lnkcnt == 0); |
futex_up(&childp->lock); |
fibril_mutex_unlock(&childp->lock); |
if (!fat_dentry_name_verify(name)) { |
/* |
415,7 → 432,7 |
* a new one. |
*/ |
futex_down(&parentp->idx->lock); |
fibril_mutex_lock(&parentp->idx->lock); |
bs = block_bb_get(parentp->idx->dev_handle); |
bps = uint16_t_le2host(bs->bps); |
dps = bps / sizeof(fat_dentry_t); |
446,12 → 463,12 |
*/ |
if (parentp->idx->pfc == FAT_CLST_ROOT) { |
/* Can't grow the root directory. */ |
futex_up(&parentp->idx->lock); |
fibril_mutex_unlock(&parentp->idx->lock); |
return ENOSPC; |
} |
rc = fat_alloc_clusters(bs, parentp->idx->dev_handle, 1, &mcl, &lcl); |
if (rc != EOK) { |
futex_up(&parentp->idx->lock); |
fibril_mutex_unlock(&parentp->idx->lock); |
return rc; |
} |
fat_append_clusters(bs, parentp, mcl); |
474,9 → 491,9 |
fat_dentry_name_set(d, name); |
b->dirty = true; /* need to sync block */ |
block_put(b); |
futex_up(&parentp->idx->lock); |
fibril_mutex_unlock(&parentp->idx->lock); |
futex_down(&childp->idx->lock); |
fibril_mutex_lock(&childp->idx->lock); |
/* |
* If possible, create the Sub-directory Identifier Entry and the |
512,12 → 529,12 |
childp->idx->pfc = parentp->firstc; |
childp->idx->pdi = i * dps + j; |
futex_up(&childp->idx->lock); |
fibril_mutex_unlock(&childp->idx->lock); |
futex_down(&childp->lock); |
fibril_mutex_lock(&childp->lock); |
childp->lnkcnt = 1; |
childp->dirty = true; /* need to sync node */ |
futex_up(&childp->lock); |
fibril_mutex_unlock(&childp->lock); |
/* |
* Hash in the index structure into the position hash. |
527,19 → 544,25 |
return EOK; |
} |
int fat_unlink(void *prnt, void *chld) |
int fat_unlink(fs_node_t *pfn, fs_node_t *cfn, const char *nm) |
{ |
fat_node_t *parentp = (fat_node_t *)prnt; |
fat_node_t *childp = (fat_node_t *)chld; |
fat_node_t *parentp = FAT_NODE(pfn); |
fat_node_t *childp = FAT_NODE(cfn); |
fat_bs_t *bs; |
fat_dentry_t *d; |
uint16_t bps; |
block_t *b; |
futex_down(&parentp->lock); |
futex_down(&childp->lock); |
if (!parentp) |
return EBUSY; |
if (fat_has_children(cfn)) |
return ENOTEMPTY; |
fibril_mutex_lock(&parentp->lock); |
fibril_mutex_lock(&childp->lock); |
assert(childp->lnkcnt == 1); |
futex_down(&childp->idx->lock); |
fibril_mutex_lock(&childp->idx->lock); |
bs = block_bb_get(childp->idx->dev_handle); |
bps = uint16_t_le2host(bs->bps); |
558,19 → 581,19 |
/* clear position information */ |
childp->idx->pfc = FAT_CLST_RES0; |
childp->idx->pdi = 0; |
futex_up(&childp->idx->lock); |
fibril_mutex_unlock(&childp->idx->lock); |
childp->lnkcnt = 0; |
childp->dirty = true; |
futex_up(&childp->lock); |
futex_up(&parentp->lock); |
fibril_mutex_unlock(&childp->lock); |
fibril_mutex_unlock(&parentp->lock); |
return EOK; |
} |
void *fat_match(void *prnt, const char *component) |
fs_node_t *fat_match(fs_node_t *pfn, const char *component) |
{ |
fat_bs_t *bs; |
fat_node_t *parentp = (fat_node_t *)prnt; |
fat_node_t *parentp = FAT_NODE(pfn); |
char name[FAT_NAME_LEN + 1 + FAT_EXT_LEN + 1]; |
unsigned i, j; |
unsigned bps; /* bytes per sector */ |
579,7 → 602,7 |
fat_dentry_t *d; |
block_t *b; |
futex_down(&parentp->idx->lock); |
fibril_mutex_lock(&parentp->idx->lock); |
bs = block_bb_get(parentp->idx->dev_handle); |
bps = uint16_t_le2host(bs->bps); |
dps = bps / sizeof(fat_dentry_t); |
594,7 → 617,7 |
continue; |
case FAT_DENTRY_LAST: |
block_put(b); |
futex_up(&parentp->idx->lock); |
fibril_mutex_unlock(&parentp->idx->lock); |
return NULL; |
default: |
case FAT_DENTRY_VALID: |
603,7 → 626,7 |
} |
if (fat_dentry_namecmp(name, component) == 0) { |
/* hit */ |
void *node; |
fat_node_t *nodep; |
/* |
* Assume tree hierarchy for locking. We |
* already have the parent and now we are going |
613,7 → 636,7 |
fat_idx_t *idx = fat_idx_get_by_pos( |
parentp->idx->dev_handle, parentp->firstc, |
i * dps + j); |
futex_up(&parentp->idx->lock); |
fibril_mutex_unlock(&parentp->idx->lock); |
if (!idx) { |
/* |
* Can happen if memory is low or if we |
622,41 → 645,38 |
block_put(b); |
return NULL; |
} |
node = fat_node_get_core(idx); |
futex_up(&idx->lock); |
nodep = fat_node_get_core(idx); |
fibril_mutex_unlock(&idx->lock); |
block_put(b); |
return node; |
return FS_NODE(nodep); |
} |
} |
block_put(b); |
} |
futex_up(&parentp->idx->lock); |
fibril_mutex_unlock(&parentp->idx->lock); |
return NULL; |
} |
fs_index_t fat_index_get(void *node) |
fs_index_t fat_index_get(fs_node_t *fn) |
{ |
fat_node_t *fnodep = (fat_node_t *)node; |
if (!fnodep) |
return 0; |
return fnodep->idx->index; |
return FAT_NODE(fn)->idx->index; |
} |
size_t fat_size_get(void *node) |
size_t fat_size_get(fs_node_t *fn) |
{ |
return ((fat_node_t *)node)->size; |
return FAT_NODE(fn)->size; |
} |
unsigned fat_lnkcnt_get(void *node) |
unsigned fat_lnkcnt_get(fs_node_t *fn) |
{ |
return ((fat_node_t *)node)->lnkcnt; |
return FAT_NODE(fn)->lnkcnt; |
} |
bool fat_has_children(void *node) |
bool fat_has_children(fs_node_t *fn) |
{ |
fat_bs_t *bs; |
fat_node_t *nodep = (fat_node_t *)node; |
fat_node_t *nodep = FAT_NODE(fn); |
unsigned bps; |
unsigned dps; |
unsigned blocks; |
666,7 → 686,7 |
if (nodep->type != FAT_DIRECTORY) |
return false; |
futex_down(&nodep->idx->lock); |
fibril_mutex_lock(&nodep->idx->lock); |
bs = block_bb_get(nodep->idx->dev_handle); |
bps = uint16_t_le2host(bs->bps); |
dps = bps / sizeof(fat_dentry_t); |
685,26 → 705,26 |
continue; |
case FAT_DENTRY_LAST: |
block_put(b); |
futex_up(&nodep->idx->lock); |
fibril_mutex_unlock(&nodep->idx->lock); |
return false; |
default: |
case FAT_DENTRY_VALID: |
block_put(b); |
futex_up(&nodep->idx->lock); |
fibril_mutex_unlock(&nodep->idx->lock); |
return true; |
} |
block_put(b); |
futex_up(&nodep->idx->lock); |
fibril_mutex_unlock(&nodep->idx->lock); |
return true; |
} |
block_put(b); |
} |
futex_up(&nodep->idx->lock); |
fibril_mutex_unlock(&nodep->idx->lock); |
return false; |
} |
void *fat_root_get(dev_handle_t dev_handle) |
fs_node_t *fat_root_get(dev_handle_t dev_handle) |
{ |
return fat_node_get(dev_handle, 0); |
} |
714,14 → 734,14 |
return fat_reg.plb_ro[pos % PLB_SIZE]; |
} |
bool fat_is_directory(void *node) |
bool fat_is_directory(fs_node_t *fn) |
{ |
return ((fat_node_t *)node)->type == FAT_DIRECTORY; |
return FAT_NODE(fn)->type == FAT_DIRECTORY; |
} |
bool fat_is_file(void *node) |
bool fat_is_file(fs_node_t *fn) |
{ |
return ((fat_node_t *)node)->type == FAT_FILE; |
return FAT_NODE(fn)->type == FAT_FILE; |
} |
/** libfs operations */ |
750,6 → 770,7 |
void fat_mounted(ipc_callid_t rid, ipc_call_t *request) |
{ |
dev_handle_t dev_handle = (dev_handle_t) IPC_GET_ARG1(*request); |
enum cache_mode cmode; |
fat_bs_t *bs; |
uint16_t bps; |
uint16_t rde; |
777,6 → 798,12 |
} |
opts[size] = '\0'; |
/* Check for option enabling write through. */ |
if (str_cmp(opts, "wtcache") == 0) |
cmode = CACHE_MODE_WT; |
else |
cmode = CACHE_MODE_WB; |
/* initialize libblock */ |
rc = block_init(dev_handle, BS_SIZE); |
if (rc != EOK) { |
806,7 → 833,7 |
} |
/* Initialize the block cache */ |
rc = block_cache_init(dev_handle, bps, 0 /* XXX */); |
rc = block_cache_init(dev_handle, bps, 0 /* XXX */, cmode); |
if (rc != EOK) { |
block_fini(dev_handle); |
ipc_answer_0(rid, rc); |
821,8 → 848,17 |
} |
/* Initialize the root node. */ |
fs_node_t *rfn = (fs_node_t *)malloc(sizeof(fs_node_t)); |
if (!rfn) { |
block_fini(dev_handle); |
fat_idx_fini_by_dev_handle(dev_handle); |
ipc_answer_0(rid, ENOMEM); |
return; |
} |
fs_node_initialize(rfn); |
fat_node_t *rootp = (fat_node_t *)malloc(sizeof(fat_node_t)); |
if (!rootp) { |
free(rfn); |
block_fini(dev_handle); |
fat_idx_fini_by_dev_handle(dev_handle); |
ipc_answer_0(rid, ENOMEM); |
832,8 → 868,9 |
fat_idx_t *ridxp = fat_idx_get_by_pos(dev_handle, FAT_CLST_ROOTPAR, 0); |
if (!ridxp) { |
free(rfn); |
free(rootp); |
block_fini(dev_handle); |
free(rootp); |
fat_idx_fini_by_dev_handle(dev_handle); |
ipc_answer_0(rid, ENOMEM); |
return; |
848,8 → 885,10 |
rootp->size = rde * sizeof(fat_dentry_t); |
rootp->idx = ridxp; |
ridxp->nodep = rootp; |
rootp->bp = rfn; |
rfn->data = rootp; |
futex_up(&ridxp->lock); |
fibril_mutex_unlock(&ridxp->lock); |
ipc_answer_3(rid, EOK, ridxp->index, rootp->size, rootp->lnkcnt); |
} |
856,7 → 895,7 |
void fat_mount(ipc_callid_t rid, ipc_call_t *request) |
{ |
ipc_answer_0(rid, ENOTSUP); |
libfs_mount(&fat_libfs_ops, fat_reg.fs_handle, rid, request); |
} |
void fat_lookup(ipc_callid_t rid, ipc_call_t *request) |
869,21 → 908,23 |
dev_handle_t dev_handle = (dev_handle_t)IPC_GET_ARG1(*request); |
fs_index_t index = (fs_index_t)IPC_GET_ARG2(*request); |
off_t pos = (off_t)IPC_GET_ARG3(*request); |
fat_node_t *nodep = (fat_node_t *)fat_node_get(dev_handle, index); |
fs_node_t *fn = fat_node_get(dev_handle, index); |
fat_node_t *nodep; |
fat_bs_t *bs; |
uint16_t bps; |
size_t bytes; |
block_t *b; |
if (!nodep) { |
if (!fn) { |
ipc_answer_0(rid, ENOENT); |
return; |
} |
nodep = FAT_NODE(fn); |
ipc_callid_t callid; |
size_t len; |
if (!ipc_data_read_receive(&callid, &len)) { |
fat_node_put(nodep); |
fat_node_put(fn); |
ipc_answer_0(callid, EINVAL); |
ipc_answer_0(rid, EINVAL); |
return; |
954,7 → 995,7 |
bnum++; |
} |
miss: |
fat_node_put(nodep); |
fat_node_put(fn); |
ipc_answer_0(callid, ENOENT); |
ipc_answer_1(rid, ENOENT, 0); |
return; |
963,7 → 1004,7 |
bytes = (pos - spos) + 1; |
} |
fat_node_put(nodep); |
fat_node_put(fn); |
ipc_answer_1(rid, EOK, (ipcarg_t)bytes); |
} |
972,7 → 1013,8 |
dev_handle_t dev_handle = (dev_handle_t)IPC_GET_ARG1(*request); |
fs_index_t index = (fs_index_t)IPC_GET_ARG2(*request); |
off_t pos = (off_t)IPC_GET_ARG3(*request); |
fat_node_t *nodep = (fat_node_t *)fat_node_get(dev_handle, index); |
fs_node_t *fn = fat_node_get(dev_handle, index); |
fat_node_t *nodep; |
fat_bs_t *bs; |
size_t bytes; |
block_t *b; |
982,15 → 1024,16 |
off_t boundary; |
int flags = BLOCK_FLAGS_NONE; |
if (!nodep) { |
if (!fn) { |
ipc_answer_0(rid, ENOENT); |
return; |
} |
nodep = FAT_NODE(fn); |
ipc_callid_t callid; |
size_t len; |
if (!ipc_data_write_receive(&callid, &len)) { |
fat_node_put(nodep); |
fat_node_put(fn); |
ipc_answer_0(callid, EINVAL); |
ipc_answer_0(rid, EINVAL); |
return; |
1031,7 → 1074,7 |
nodep->dirty = true; /* need to sync node */ |
} |
ipc_answer_2(rid, EOK, bytes, nodep->size); |
fat_node_put(nodep); |
fat_node_put(fn); |
return; |
} else { |
/* |
1047,7 → 1090,7 |
status = fat_alloc_clusters(bs, dev_handle, nclsts, &mcl, &lcl); |
if (status != EOK) { |
/* could not allocate a chain of nclsts clusters */ |
fat_node_put(nodep); |
fat_node_put(fn); |
ipc_answer_0(callid, status); |
ipc_answer_0(rid, status); |
return; |
1068,7 → 1111,7 |
nodep->size = pos + bytes; |
nodep->dirty = true; /* need to sync node */ |
ipc_answer_2(rid, EOK, bytes, nodep->size); |
fat_node_put(nodep); |
fat_node_put(fn); |
return; |
} |
} |
1078,7 → 1121,8 |
dev_handle_t dev_handle = (dev_handle_t)IPC_GET_ARG1(*request); |
fs_index_t index = (fs_index_t)IPC_GET_ARG2(*request); |
size_t size = (off_t)IPC_GET_ARG3(*request); |
fat_node_t *nodep = (fat_node_t *)fat_node_get(dev_handle, index); |
fs_node_t *fn = fat_node_get(dev_handle, index); |
fat_node_t *nodep; |
fat_bs_t *bs; |
uint16_t bps; |
uint8_t spc; |
1085,10 → 1129,11 |
unsigned bpc; /* bytes per cluster */ |
int rc; |
if (!nodep) { |
if (!fn) { |
ipc_answer_0(rid, ENOENT); |
return; |
} |
nodep = FAT_NODE(fn); |
bs = block_bb_get(dev_handle); |
bps = uint16_t_le2host(bs->bps); |
1126,11 → 1171,16 |
nodep->dirty = true; /* need to sync node */ |
rc = EOK; |
} |
fat_node_put(nodep); |
fat_node_put(fn); |
ipc_answer_0(rid, rc); |
return; |
} |
void fat_close(ipc_callid_t rid, ipc_call_t *request) |
{ |
ipc_answer_0(rid, EOK); |
} |
void fat_destroy(ipc_callid_t rid, ipc_call_t *request) |
{ |
dev_handle_t dev_handle = (dev_handle_t)IPC_GET_ARG1(*request); |
1137,16 → 1187,32 |
fs_index_t index = (fs_index_t)IPC_GET_ARG2(*request); |
int rc; |
fat_node_t *nodep = fat_node_get(dev_handle, index); |
if (!nodep) { |
fs_node_t *fn = fat_node_get(dev_handle, index); |
if (!fn) { |
ipc_answer_0(rid, ENOENT); |
return; |
} |
rc = fat_destroy_node(nodep); |
rc = fat_destroy_node(fn); |
ipc_answer_0(rid, rc); |
} |
void fat_open_node(ipc_callid_t rid, ipc_call_t *request) |
{ |
libfs_open_node(&fat_libfs_ops, fat_reg.fs_handle, rid, request); |
} |
void fat_device(ipc_callid_t rid, ipc_call_t *request) |
{ |
ipc_answer_0(rid, ENOTSUP); |
} |
void fat_sync(ipc_callid_t rid, ipc_call_t *request) |
{ |
/* Dummy implementation */ |
ipc_answer_0(rid, EOK); |
} |
/** |
* @} |
*/ |
*/ |
/branches/network/uspace/srv/fs/fat/Makefile |
---|
74,7 → 74,7 |
disasm: $(OUTPUT).disasm |
$(OUTPUT).disasm: $(OUTPUT) |
$(OBJDUMP) -d $< >$@ |
$(OBJDUMP) -d $< > $@ |
%.o: %.S |
$(CC) $(DEFS) $(AFLAGS) $(CFLAGS) -D__ASM__ -c $< -o $@ |