int vfs_fuse_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
off_t offset, struct fuse_file_info *fi) {
struct vfs_inode *node, *dir_list, *found_node;
struct stat dst;
int ret;
if ((ret = vfs_node_lookup(path, &node, false)) != 0)
return ret;
if (!S_ISDIR(node->data.mode)) {
vfs_node_deref(node);
return -EINVAL;
}
vfs_stat_translate(&dst, &node->data);
filler(buf, ".", &dst, 0);
filler(buf, "..", NULL, 0);
if ((ret = vfs_dir_read(node->data.ino, &dir_list, NULL)) != 0) {
warning("File system missing data at inode %016" PRIx64,
node->data.ino);
vfs_node_deref(node);
return ret;
}
for (found_node = dir_list; found_node; found_node = found_node->next) {
vfs_stat_translate(&dst, &found_node->data);
filler(buf, found_node->data.name, &dst, 0);
}
vfs_dir_read_free(dir_list);
vfs_node_deref(node);
return 0;
}
int vfs_fuse_rmdir(const char *path) {
struct vfs_inode *node, *dir_list;
int ret;
if (store_get_readonly())
return -EPERM;
if ((ret = vfs_node_lookup(path, &node, false)) != 0)
return ret;
if (!S_ISDIR(node->data.mode)) {
vfs_node_deref(node);
return -ENOTDIR;
}
if ((ret = vfs_dir_read(node->data.ino, &dir_list, NULL)) != 0) {
warning("File system missing data at inode %016" PRIx64,
node->data.ino);
vfs_node_deref(node);
return ret;
}
if (dir_list) {
ret = -ENOTEMPTY;
} else {
ret = vfs_node_delete(node, true);
}
vfs_dir_read_free(dir_list);
vfs_node_deref(node);
return ret;
}
int vfs_fuse_unlink(const char *path) {
struct vfs_inode *node;
int ret;
if (store_get_readonly())
return -EPERM;
if ((ret = vfs_node_lookup(path, &node, false)) != 0)
return ret;
if ((ret = vfs_node_delete(node, true)) != 0) {
vfs_node_deref(node);
return ret;
}
vfs_node_deref(node);
return 0;
}
int vfs_node_commit_and_deref(struct vfs_inode *node) {
int ret;
ret = vfs_node_commit(node);
vfs_node_deref(node);
return ret;
}
int vfs_fuse_getattr(const char *path, struct stat *stbuf) {
struct vfs_inode *node;
int ret;
if ((ret = vfs_node_lookup(path, &node, false)) != 0)
return ret;
vfs_stat_translate(stbuf, &node->data);
vfs_node_deref(node);
return 0;
}
void vfs_fd_clear() {
struct vfs_fd *fd;
while (vfs_fd_list) {
fd = vfs_fd_list;
vfs_fd_list = fd->next;
vfs_node_deref(fd->node);
free(fd);
}
}
int vfs_fuse_rename(const char *from, const char *to) {
struct vfs_inode *old_node, *new_node;
struct vfs_inode_ptr old_ptr;
int ret;
if (store_get_readonly())
return -EPERM;
if ((ret = vfs_node_lookup(from, &old_node, false)) != 0)
return ret;
if ((ret = vfs_node_lookup(to, &new_node, true)) != 0) {
if (ret != -EEXIST) {
vfs_node_deref(old_node);
return ret;
}
if ((ret = vfs_fuse_unlink(to)) != 0) {
vfs_node_deref(old_node);
return ret;
}
if ((ret = vfs_node_lookup(to, &new_node, true)) != 0) {
vfs_node_deref(old_node);
return ret;
}
}
memcpy(&old_ptr, &old_node->ptr, sizeof(old_ptr));
memcpy(&old_node->ptr, &new_node->ptr, sizeof(old_node->ptr));
memcpy(&new_node->ptr, &old_ptr, sizeof(new_node->ptr));
memcpy(old_node->data.name, new_node->data.name,
sizeof(old_node->data.name));
if ((ret = vfs_node_commit_and_deref(old_node)) != 0) {
vfs_node_deref(new_node);
return ret;
}
ret = vfs_node_delete(new_node, false);
vfs_node_deref(new_node);
return ret;
}
int vfs_fuse_readlink(const char *path, char *buf, uint64_t size) {
struct vfs_inode *node;
int ret;
if ((ret = vfs_node_lookup(path, &node, false)) != 0)
return ret;
if (!S_ISLNK(node->data.mode))
ret = -EINVAL;
else
ret = vfs_io_perform(node, VFS_IO_READ, buf, size, 0);
vfs_node_deref(node);
return ret;
}
int vfs_fuse_open(const char *path, struct fuse_file_info *fi) {
struct vfs_inode *node;
int ret;
if ((ret = vfs_node_lookup(path, &node, false)) != 0)
return ret;
if (!S_ISLNK(node->data.mode) && !S_ISREG(node->data.mode)) {
vfs_node_deref(node);
return -EISDIR;
}
fi->fh = vfs_fd_create(node);
return vfs_node_commit_and_deref(node);
}
bool vfs_fd_close(vfs_fd_handle fh) {
struct vfs_fd *fd;
for (fd = vfs_fd_list; fd; fd = fd->next) {
if (fh == fd->fh)
break;
}
if (!fd)
return false;
vfs_node_deref(fd->node);
if (fd->prev)
fd->prev->next = fd->next;
else
vfs_fd_list = fd->next;
if (fd->next)
fd->next->prev = fd->prev;
free(fd);
return true;
}
static int devfs_close(struct vfs_node *node)
{
int rc = 0;
if (!node || !node->data) {
rc = EINVAL;
goto out;
}
/* Close the device since we are the last reference */
if (node->ref_count == 1) {
dev_close((struct dev *)node->data);
}
vfs_node_deref(node);
DEBUG(DL_DBG, ("close(%s:%d).\n", node->name, node->ino));
out:
return rc;
}
int vfs_fuse_symlink(const char *from, const char *to) {
struct vfs_inode *node;
struct fuse_context *ctx;
int ret;
if (store_get_readonly())
return -EPERM;
if (!(ctx = fuse_get_context()))
return -EFAULT;
if ((ret = vfs_node_lookup(to, &node, true)) != 0)
return ret;
node->data.mode = S_IFLNK | VFS_DEFAULT_MODE;
node->data.uid = ctx->uid;
node->data.gid = ctx->gid;
if ((ret = vfs_io_perform(node, VFS_IO_WRITE, (char*) from,
strlen(from), 0)) != 0) {
vfs_node_deref(node);
return ret;
}
return vfs_node_commit_and_deref(node);
}
int floppy_init(void)
{
int rc = 0;
int res, i;
struct vfs_node *n = NULL;
//struct dev *d = NULL;
//dev_t devno;
u_long cmos_drive0, cmos_drive1;
rc = dev_register(FLPY_MAJOR, "flpy");
if (rc != 0) {
DEBUG(DL_DBG, ("register FLPY device class failed.\n"));
goto out;
}
/* Open the root of devfs */
n = vfs_lookup("/dev", VFS_DIRECTORY);
if (!n) {
rc = EGENERIC;
DEBUG(DL_DBG, ("devfs not mounted.\n"));
goto out;
}
/* Setup the interrupt handler */
register_irq_handler(IRQ6, &_flpy_hook, flpy_callback);
/* Reset primary controller */
_primary_fdc.base_port = FDC_PRI;
fdc_reset(&_primary_fdc);
/* Get the FDC version */
fdc_out(_primary_fdc.base_port, FDC_VERSION);
res = fdc_in(_primary_fdc.base_port);
DEBUG(DL_DBG, ("FDC version(0x%x)\n", res));
switch (res) {
case 0x80: DEBUG(DL_DBG, ("NEC765 FDC found on base port 0x%x\n",
_primary_fdc.base_port));
break;
case 0x90: DEBUG(DL_DBG, ("Enhanced FDC found on base port 0x%x\n",
_primary_fdc.base_port));
break;
default: DEBUG(DL_DBG, ("FDC not found on base port 0x%x\n",
_primary_fdc.base_port));
}
/* Read floppy drive type from CMOS memory (up to two drives). */
fdc_out(0x70, 0x10);
res = fdc_in(0x71);
cmos_drive0 = res >> 4;
cmos_drive1 = res & 0x0F;
/* Setup the two floppy drives */
setup_drive(&_primary_fdc, 0, cmos_drive0);
setup_drive(&_primary_fdc, 0, cmos_drive1);
for (res = 0, i = 0; i < NR_MAXDRIVES; i++) {
if (_primary_fdc.drive[i].param->cmos_type)
; // Setup callback
}
DEBUG(DL_DBG, ("module flpy initialize successfully.\n"));
out:
if (n) {
vfs_node_deref(n);
}
return 0;
}