* @copyright Copyright (c) 2022
*
*/
+#include <klibc/strfmt.h>
#include <klibc/string.h>
#include <lunaix/clock.h>
-#include <lunaix/fs.h>
+#include <lunaix/fs/api.h>
#include <lunaix/fs/twifs.h>
+#include <lunaix/fs/twimap.h>
#include <lunaix/mm/cake.h>
#include <lunaix/mm/valloc.h>
+#include <lunaix/spike.h>
-static struct twifs_node* fs_root;
+#include <asm/pagetable.h>
+static struct twifs_node* fs_root;
static struct cake_pile* twi_pile;
+static volatile u32_t inode_id = 0;
-static volatile int32_t inode_id = 0;
-
-int
-__twifs_dirlookup(struct v_inode* inode, struct v_dnode* dnode);
-
-int
-__twifs_openfile(struct v_inode* inode, struct v_file* file);
-
-struct twifs_node*
-__twifs_get_node(struct twifs_node* parent, struct hstr* name);
-
-struct v_inode*
-__twifs_create_inode(struct twifs_node* twi_node);
-
-int
-__twifs_iterate_dir(struct v_inode* inode, struct dir_context* dctx);
-
-int
-__twifs_mount(struct v_superblock* vsb, struct v_dnode* mount_point);
-
-int
-__twifs_mkdir(struct v_inode* inode, struct v_dnode* dnode);
-
-int
-__twifs_rmstuff(struct v_inode* inode, struct v_dnode* dir);
-
-int
-__twifs_fwrite(struct v_inode* inode, void* buffer, size_t len, size_t fpos);
-
-int
-__twifs_fread(struct v_inode* inode, void* buffer, size_t len, size_t fpos);
-
-void
-twifs_init()
-{
- twi_pile = cake_new_pile("twifs_node", sizeof(struct twifs_node), 1, 0);
-
- struct filesystem* twifs = vzalloc(sizeof(struct filesystem));
- twifs->fs_name = HSTR("twifs", 5);
- twifs->mount = __twifs_mount;
- twifs->types = FSTYPE_ROFS;
- twifs->fs_id = 0;
+extern const struct v_file_ops twifs_file_ops;
+extern const struct v_inode_ops twifs_inode_ops;
- fsm_register(twifs);
-
- fs_root = twifs_dir_node(NULL, NULL, 0, 0);
-}
-
-struct twifs_node*
+static struct twifs_node*
__twifs_new_node(struct twifs_node* parent,
- const char* name,
- int name_len,
- uint32_t itype)
+ const char* name, int name_len, u32_t itype)
{
struct twifs_node* node = cake_grab(twi_pile);
memset(node, 0, sizeof(*node));
- node->name = HSTR(name, name_len);
+ strncpy(node->name_val, name, VFS_NAME_MAXLEN);
+
+ node->name = HSTR(node->name_val, MIN(name_len, VFS_NAME_MAXLEN));
node->itype = itype;
+ node->ino_id = inode_id++;
hstr_rehash(&node->name, HSTR_FULL_HASH);
llist_init_head(&node->children);
return node;
}
-int
-twifs_rm_node(struct twifs_node* node)
-{
- if ((node->itype & VFS_IFDIR) && !llist_empty(&node->children)) {
- return ENOTEMPTY;
- }
- llist_delete(&node->siblings);
- cake_release(twi_pile, node);
- return 0;
-}
-
-struct twifs_node*
-twifs_file_node(struct twifs_node* parent,
- const char* name,
- int name_len,
- uint32_t itype)
+static void
+__twifs_init_inode(struct v_superblock* vsb, struct v_inode* inode)
{
- struct twifs_node* twi_node =
- __twifs_new_node(parent, name, name_len, VFS_IFFILE | itype);
+ inode->ops = (struct v_inode_ops*)&twifs_inode_ops;
+ inode->default_fops = (struct v_file_ops*)&twifs_file_ops;
- struct v_inode* twi_inode = __twifs_create_inode(twi_node);
- twi_node->inode = twi_inode;
- return twi_node;
+ // we set default access right to be 0660.
+ // TODO need a way to allow this to be changed
+
+ fsapi_inode_setaccess(inode, FSACL_DEFAULT);
+ fsapi_inode_setowner(inode, 0, 0);
}
-struct twifs_node*
-twifs_dir_node(struct twifs_node* parent,
- const char* name,
- int name_len,
- uint32_t itype)
+static int
+__twifs_mount(struct v_superblock* vsb, struct v_dnode* mount_point)
{
- struct hstr hname = HSTR(name, name_len);
- hstr_rehash(&hname, HSTR_FULL_HASH);
- struct twifs_node* node = __twifs_get_node(parent, &hname);
- if (node) {
- return node;
- }
-
- struct twifs_node* twi_node =
- __twifs_new_node(parent, name, name_len, VFS_IFDIR | itype);
-
- struct v_inode* twi_inode = __twifs_create_inode(twi_node);
- twi_node->inode = twi_inode;
-
- return twi_node;
-}
+ vsb->ops.init_inode = __twifs_init_inode;
-struct twifs_node*
-twifs_toplevel_node(const char* name, int name_len, uint32_t itype)
-{
- return twifs_dir_node(fs_root, name, name_len, itype);
-}
+ struct v_inode* inode = vfs_i_alloc(vsb);
+ if (!inode) {
+ return ENOMEM;
+ }
-int
-__twifs_mkdir(struct v_inode* inode, struct v_dnode* dnode)
-{
- return ENOTSUP;
-}
+ inode->id = fs_root->ino_id;
+ inode->itype = fs_root->itype;
+ inode->data = fs_root;
-int
-__twifs_mount(struct v_superblock* vsb, struct v_dnode* mount_point)
-{
- vfs_assign_inode(mount_point, fs_root->inode);
+ vfs_i_addhash(inode);
+ vfs_assign_inode(mount_point, inode);
return 0;
}
-struct v_inode*
-__twifs_create_inode(struct twifs_node* twi_node)
+static int
+__twifs_unmount(struct v_superblock* vsb)
{
- struct v_inode* inode = vfs_i_alloc(1, inode_id++);
- inode->itype = twi_node->itype;
- inode->data = twi_node;
-
- inode->ctime = clock_unixtime();
- inode->atime = inode->ctime;
- inode->mtime = inode->ctime;
-
- inode->ops.dir_lookup = __twifs_dirlookup;
- inode->ops.mkdir = __twifs_mkdir;
- inode->ops.rmdir = __twifs_rmstuff;
- inode->ops.open = __twifs_openfile;
-
- inode->default_fops = (struct v_file_ops){ .read = __twifs_fread,
- .write = __twifs_fwrite,
- .readdir = __twifs_iterate_dir };
-
- return inode;
+ return 0;
}
-int
+static int
__twifs_fwrite(struct v_inode* inode, void* buffer, size_t len, size_t fpos)
{
struct twifs_node* twi_node = (struct twifs_node*)inode->data;
return twi_node->ops.write(inode, buffer, len, fpos);
}
-int
+static int
+__twifs_fwrite_pg(struct v_inode* inode, void* buffer, size_t fpos)
+{
+ return __twifs_fwrite(inode, buffer, PAGE_SIZE, fpos);
+}
+
+static int
__twifs_fread(struct v_inode* inode, void* buffer, size_t len, size_t fpos)
{
struct twifs_node* twi_node = (struct twifs_node*)inode->data;
return twi_node->ops.read(inode, buffer, len, fpos);
}
-struct twifs_node*
+static int
+__twifs_fread_pg(struct v_inode* inode, void* buffer, size_t fpos)
+{
+ return __twifs_fread(inode, buffer, PAGE_SIZE, fpos);
+}
+
+static struct twifs_node*
__twifs_get_node(struct twifs_node* parent, struct hstr* name)
{
if (!parent)
return NULL;
}
-int
-__twifs_rmstuff(struct v_inode* inode, struct v_dnode* dir)
-{
- return ENOTSUP;
-}
-
-int
+static int
__twifs_dirlookup(struct v_inode* inode, struct v_dnode* dnode)
{
struct twifs_node* twi_node = (struct twifs_node*)inode->data;
- if (!(twi_node->itype & VFS_IFDIR)) {
+ if (!check_directory_node(inode)) {
return ENOTDIR;
}
- struct twifs_node* child_node = __twifs_get_node(twi_node, &dnode->name);
- if (child_node) {
- vfs_assign_inode(dnode, child_node->inode);
+ struct twifs_node* twinode = __twifs_get_node(twi_node, &dnode->name);
+ if (twinode) {
+ struct v_inode* child_inode = vfs_i_find(inode->sb, twinode->ino_id);
+ if (child_inode) {
+ goto done;
+ }
+
+ if (!(child_inode = vfs_i_alloc(inode->sb))) {
+ return ENOENT;
+ }
+
+ child_inode->id = twinode->ino_id;
+ child_inode->itype = twinode->itype;
+ child_inode->data = twinode;
+
+ if (twinode->acl != -1) {
+ fsapi_inode_setaccess(child_inode, twinode->acl);
+ }
+
+ vfs_i_addhash(child_inode);
+
+ done:
+ dnode->data = twinode->data;
+ vfs_assign_inode(dnode, child_inode);
return 0;
}
return ENOENT;
}
-int
-__twifs_iterate_dir(struct v_inode* inode, struct dir_context* dctx)
+static int
+__twifs_iterate_dir(struct v_file* file, struct dir_context* dctx)
{
- struct twifs_node* twi_node = (struct twifs_node*)(inode->data);
- int counter = 0;
+ struct twifs_node* twi_node = (struct twifs_node*)(file->inode->data);
+ unsigned int counter = 2;
struct twifs_node *pos, *n;
+ if (fsapi_handle_pseudo_dirent(file, dctx)) {
+ return 1;
+ }
+
llist_for_each(pos, n, &twi_node->children, siblings)
{
- if (counter++ >= dctx->index) {
- dctx->index = counter;
- dctx->read_complete_callback(
- dctx, pos->name.value, pos->name.len, pos->itype);
- return 0;
+ if (counter++ >= file->f_pos) {
+ fsapi_dir_report(
+ dctx, pos->name.value, pos->name.len, vfs_get_dtype(pos->itype));
+ return 1;
}
}
- return 1;
+ return 0;
}
-int
+static int
__twifs_openfile(struct v_inode* inode, struct v_file* file)
{
struct twifs_node* twi_node = (struct twifs_node*)inode->data;
}
return ENOTSUP;
}
+
+static inline struct twifs_node*
+__twifs_create_node(struct twifs_node* parent,
+ const char* name, int acl)
+{
+ struct twifs_node* twi_node;
+ unsigned int size;
+
+ size = strlen(name);
+ parent = parent ?: fs_root;
+ twi_node = __twifs_new_node(parent, name, size, F_FILE);
+ twi_node->acl = acl;
+
+ return twi_node;
+}
+
+static int
+__twifs_twimap_file_read(struct v_inode* inode,
+ void* buf, size_t len, size_t fpos)
+{
+ struct twimap* map = twinode_getdata(inode, struct twimap*);
+ return twimap_read(map, buf, len, fpos);
+}
+
+
+int
+twifs_rm_node(struct twifs_node* node)
+{
+ if (check_itype(node->itype, VFS_IFDIR) && !llist_empty(&node->children)) {
+ return ENOTEMPTY;
+ }
+ llist_delete(&node->siblings);
+ cake_release(twi_pile, node);
+ return 0;
+}
+
+struct twifs_node*
+twifs_file_node_vargs(struct twifs_node* parent, const char* fmt, va_list args)
+{
+ char buf[VFS_NAME_MAXLEN];
+ size_t len = ksnprintfv(buf, fmt, VFS_NAME_MAXLEN, args);
+
+ return __twifs_new_node(parent ? parent : fs_root, buf, len, F_FILE);
+}
+
+struct twifs_node*
+twifs_dir_node(struct twifs_node* parent, const char* fmt, ...)
+{
+ size_t len;
+ char buf[VFS_NAME_MAXLEN];
+ struct twifs_node* twi_node;
+
+ va_list args;
+ va_start(args, fmt);
+
+ len = ksnprintfv(buf, fmt, VFS_NAME_MAXLEN, args);
+ twi_node =
+ __twifs_new_node(parent ? parent : fs_root, buf, len, VFS_IFDIR);
+
+ twi_node->acl = FSACL_aR | FSACL_aX;
+
+ va_end(args);
+
+ return twi_node;
+}
+
+
+struct twifs_node*
+twifs_basic_node_from(struct twifs_node* parent,
+ struct twifs_export* def, void* data)
+{
+ struct twifs_node* twi_node;
+
+ twi_node = __twifs_create_node(parent, def->name, def->acl);
+ twi_node->ops = def->ops;
+ twi_node->data = data;
+
+ return twi_node;
+}
+
+struct twifs_node*
+twifs_mapped_node_from(struct twifs_node* parent,
+ struct twimap_export* def, void* data)
+{
+ struct twifs_node* twi_node;
+ struct twimap* map_;
+
+ map_ = twimap_create(data);
+ twi_node = __twifs_create_node(parent, def->name, def->acl);
+
+ twi_node->data = map_;
+ twi_node->ops.read = __twifs_twimap_file_read;
+ // twi_node->ops.write = __twifs_twimap_file_write;
+
+ if (def->ops.go_next) {
+ map_->ops.go_next = def->ops.go_next;
+ }
+
+ if (def->ops.reset) {
+ map_->ops.reset = def->ops.reset;
+ }
+
+ map_->ops.read = def->ops.read;
+
+ return twi_node;
+}
+
+struct twimap*
+twifs_mapping(struct twifs_node* parent,
+ void* data, int acl, const char* fmt, ...)
+{
+ va_list args;
+ va_start(args, fmt);
+
+ struct twimap* map = twimap_create(data);
+ struct twifs_node* node = twifs_file_node_vargs(parent, fmt, args);
+
+ node->ops.read = __twifs_twimap_file_read;
+ node->data = map;
+ node->acl = acl;
+
+ return map;
+}
+
+void
+twifs_register_plugins()
+{
+ ldga_invoke_fn0(twiplugin_inits);
+}
+
+const struct v_file_ops twifs_file_ops = { .close = default_file_close,
+ .read = __twifs_fread,
+ .read_page = __twifs_fread_pg,
+ .write = __twifs_fwrite,
+ .write_page = __twifs_fwrite_pg,
+ .readdir = __twifs_iterate_dir };
+
+const struct v_inode_ops twifs_inode_ops = { .dir_lookup = __twifs_dirlookup,
+ .mkdir = default_inode_mkdir,
+ .rmdir = default_inode_rmdir,
+ .open = __twifs_openfile };
+
+
+static void
+twifs_init()
+{
+ struct filesystem* fs;
+ fs = fsapi_fs_declare("twifs", FSTYPE_PSEUDO | FSTYPE_ROFS);
+
+ fsapi_fs_set_mntops(fs, __twifs_mount, __twifs_unmount);
+ fsapi_fs_finalise(fs);
+
+ twi_pile = cake_new_pile("twifs_node", sizeof(struct twifs_node), 1, 0);
+ fs_root = twifs_dir_node(NULL, NULL, 0, 0);
+}
+EXPORT_FILE_SYSTEM(twifs, twifs_init);
\ No newline at end of file
git://scm.lunaixsky.com / lunaix-os.git / blobdiff