From: Jan Luebbe <j...@pengutronix.de>
This adds file transfer support over RATP. The host can export a
directory using the bbremote tool which can then be mounted under
barebox as a filesystem.
Signed-off-by: Jan Luebbe <j...@pengutronix.de>
Signed-off-by: Sascha Hauer <s.ha...@pengutronix.de>
---
fs/Kconfig | 8 +
fs/Makefile | 2 +-
fs/ratpfs.c | 476 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 485 insertions(+), 1 deletion(-)
create mode 100644 fs/ratpfs.c
diff --git a/fs/Kconfig b/fs/Kconfig
index 9217bc8..9cfeb37 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -89,4 +89,12 @@ config FS_SMHFS
located on a debugging host connected to the target running
Barebox
+config FS_RATP
+ bool
+ depends on CONSOLE_RATP
+ prompt "RATP filesystem support"
+ help
+ This enables support for transferring files over RATP. A host can
+ export a directory which can then be mounted under barebox.
+
endmenu
diff --git a/fs/Makefile b/fs/Makefile
index befbdf2..714acb4 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -14,4 +14,4 @@ obj-$(CONFIG_FS_UIMAGEFS) += uimagefs.o
obj-$(CONFIG_FS_EFI) += efi.o
obj-$(CONFIG_FS_EFIVARFS) += efivarfs.o
obj-$(CONFIG_FS_SMHFS) += smhfs.o
-obj-$(CONFIG_RATP) += ratpfs.o
+obj-$(CONFIG_FS_RATP) += ratpfs.o
diff --git a/fs/ratpfs.c b/fs/ratpfs.c
new file mode 100644
index 0000000..902289b
--- /dev/null
+++ b/fs/ratpfs.c
@@ -0,0 +1,476 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#define pr_fmt(fmt) "barebox-ratpfs: " fmt
+
+#include <common.h>
+#include <command.h>
+#include <init.h>
+#include <malloc.h>
+#include <fs.h>
+#include <errno.h>
+#include <linux/stat.h>
+#include <asm/unaligned.h>
+#include <ratp_bb.h>
+
+#define RATPFS_TYPE_MOUNT_CALL 1
+#define RATPFS_TYPE_MOUNT_RETURN 2
+#define RATPFS_TYPE_READDIR_CALL 3
+#define RATPFS_TYPE_READDIR_RETURN 4
+#define RATPFS_TYPE_STAT_CALL 5
+#define RATPFS_TYPE_STAT_RETURN 6
+#define RATPFS_TYPE_OPEN_CALL 7
+#define RATPFS_TYPE_OPEN_RETURN 8
+#define RATPFS_TYPE_READ_CALL 9
+#define RATPFS_TYPE_READ_RETURN 10
+#define RATPFS_TYPE_WRITE_CALL 11
+#define RATPFS_TYPE_WRITE_RETURN 12
+#define RATPFS_TYPE_CLOSE_CALL 13
+#define RATPFS_TYPE_CLOSE_RETURN 14
+#define RATPFS_TYPE_TRUNCATE_CALL 15
+#define RATPFS_TYPE_TRUNCATE_RETURN 16
+
+struct ratpfs_file {
+ uint32_t handle;
+};
+
+struct ratpfs_dir {
+ char *entries;
+ int len, off;
+ DIR dir;
+};
+
+static int ratpfs_create(struct device_d __always_unused *dev,
+ const char __always_unused *pathname,
+ mode_t __always_unused mode)
+{
+ pr_debug("%s\n", __func__);
+
+ return 0;
+}
+
+static int ratpfs_mkdir(struct device_d __always_unused *dev,
+ const char __always_unused *pathname)
+{
+ pr_debug("%s\n", __func__);
+
+ return -ENOSYS;
+}
+
+static int ratpfs_rm(struct device_d __always_unused *dev,
+ const char *pathname)
+{
+ pr_debug("%s\n", __func__);
+
+ /* Get rid of leading '/' */
+ pathname = &pathname[1];
+
+ return 0;
+}
+
+static int ratpfs_truncate(struct device_d __always_unused *dev,
+ FILE *f, ulong size)
+{
+ int len_tx = 1 /* type */
+ + 4 /* handle */
+ + 4 /* size */;
+ struct ratp_bb_pkt *pkt_tx = xzalloc(sizeof(*pkt_tx)+len_tx);
+ struct ratp_bb_pkt *pkt_rx = NULL;
+ struct ratpfs_file *rfile = f->priv;
+ int ret;
+
+ pr_debug("%s: len_tx=%i handle=%i size=%i\n", __func__,
+ len_tx, rfile->handle, (int)size);
+
+ pkt_tx->len = len_tx;
+ pkt_tx->data[0] = RATPFS_TYPE_TRUNCATE_CALL;
+ put_unaligned_be32(rfile->handle, &pkt_tx->data[1]);
+ put_unaligned_be32(size, &pkt_tx->data[5]);
+
+ ret = barebox_ratp_fs_call(pkt_tx, &pkt_rx);
+ if (ret) {
+ ret = -EIO;
+ goto out;
+ }
+
+ pr_debug("%s: len_rx=%i\n", __func__, pkt_rx->len);
+
+ if (pkt_rx->len < 1 || pkt_rx->data[0] != RATPFS_TYPE_TRUNCATE_RETURN) {
+ pr_err("invalid truncate response\n");
+ ret = -EIO;
+ goto out;
+ }
+
+out:
+ free(pkt_rx);
+ return ret;
+}
+
+static int ratpfs_open(struct device_d __always_unused *dev,
+ FILE *file, const char *filename)
+{
+ int len_name = strlen(filename);
+ int len_tx = 1 /* type */
+ + 4 /* flags */
+ + len_name /* path */;
+ struct ratp_bb_pkt *pkt_tx = xzalloc(sizeof(*pkt_tx) + len_tx);
+ struct ratp_bb_pkt *pkt_rx = NULL;
+ struct ratpfs_file *rfile = xzalloc(sizeof(*rfile));
+ int ret;
+
+ pr_debug("%s: len_tx=%i filename='%s'\n", __func__, len_tx, filename);
+
+ pkt_tx->len = len_tx;
+ pkt_tx->data[0] = RATPFS_TYPE_OPEN_CALL;
+ put_unaligned_be32(file->flags, &pkt_tx->data[1]);
+ memcpy(&pkt_tx->data[5], filename, len_name);
+
+ ret = barebox_ratp_fs_call(pkt_tx, &pkt_rx);
+ if (ret) {
+ ret = -EIO;
+ goto err;
+ }
+
+ pr_debug("%s: len_rx=%i\n", __func__, pkt_rx->len);
+ if (pkt_rx->len < 1 || pkt_rx->data[0] != RATPFS_TYPE_OPEN_RETURN) {
+ pr_err("invalid open response\n");
+ ret = -EIO;
+ goto err;
+ }
+ rfile->handle = get_unaligned_be32(&pkt_rx->data[1]);
+ if (rfile->handle == 0) {
+ ret = -get_unaligned_be32(&pkt_rx->data[5]); /* errno */
+ goto err;
+ }
+ file->priv = rfile;
+ file->size = get_unaligned_be32(&pkt_rx->data[5]);
+
+ goto out;
+
+err:
+ file->priv = NULL;
+ free(rfile);
+out:
+ free(pkt_rx);
+ return ret;
+}
+
+static int ratpfs_close(struct device_d __always_unused *dev,
+ FILE *f)
+{
+ int len_tx = 1 /* type */
+ + 4 /* handle */;
+ struct ratp_bb_pkt *pkt_tx = xzalloc(sizeof(*pkt_tx) + len_tx);
+ struct ratp_bb_pkt *pkt_rx = NULL;
+ struct ratpfs_file *rfile = f->priv;
+ int ret;
+
+ pr_debug("%s: len_tx=%i handle=%i\n", __func__,
+ len_tx, rfile->handle);
+
+ pkt_tx->len = len_tx;
+ pkt_tx->data[0] = RATPFS_TYPE_CLOSE_CALL;
+ put_unaligned_be32(rfile->handle, &pkt_tx->data[1]);
+
+ ret = barebox_ratp_fs_call(pkt_tx, &pkt_rx);
+ if (ret) {
+ ret = -EIO;
+ goto out;
+ }
+
+ pr_debug("%s: len_rx=%i\n", __func__, pkt_rx->len);
+
+ if (pkt_rx->len < 1 || pkt_rx->data[0] != RATPFS_TYPE_CLOSE_RETURN) {
+ pr_err("invalid close response\n");
+ goto out;
+ }
+
+out:
+ free(pkt_rx);
+ return ret;
+}
+
+static int ratpfs_write(struct device_d __always_unused *dev,
+ FILE *f, const void *buf, size_t orig_size)
+{
+ int size = min((int)orig_size, 4096);
+ int len_tx = 1 /* type */
+ + 4 /* handle */
+ + 4 /* pos */
+ + size /* data */;
+ struct ratp_bb_pkt *pkt_tx = xzalloc(sizeof(*pkt_tx) + len_tx);
+ struct ratp_bb_pkt *pkt_rx = NULL;
+ struct ratpfs_file *rfile = f->priv;
+ int ret;
+
+ pr_debug("%s: len_tx=%i handle=%i pos=%i size=%i\n", __func__,
+ len_tx, rfile->handle, (int)f->pos, size);
+
+ pkt_tx->len = len_tx;
+ pkt_tx->data[0] = RATPFS_TYPE_WRITE_CALL;
+ put_unaligned_be32(rfile->handle, &pkt_tx->data[1]);
+ put_unaligned_be32(f->pos, &pkt_tx->data[5]);
+ memcpy(&pkt_tx->data[9], buf, size);
+
+ ret = barebox_ratp_fs_call(pkt_tx, &pkt_rx);
+ if (ret) {
+ ret = -EIO;
+ goto out;
+ }
+
+ pr_debug("%s: len_rx=%i\n", __func__, pkt_rx->len);
+
+ if (pkt_rx->len < 1 || pkt_rx->data[0] != RATPFS_TYPE_WRITE_RETURN) {
+ pr_err("invalid write response\n");
+ ret = -EIO;
+ goto out;
+ }
+
+ ret = size;
+out:
+ free(pkt_rx);
+
+ return ret;
+}
+
+static int ratpfs_read(struct device_d __always_unused *dev,
+ FILE *f, void *buf, size_t orig_size)
+{
+ int size = min((int)orig_size, 4096);
+ int len_tx = 1 /* type */
+ + 4 /* handle */
+ + 4 /* pos */
+ + 4 /* size */;
+ struct ratp_bb_pkt *pkt_tx = xzalloc(sizeof(*pkt_tx) + len_tx);
+ struct ratp_bb_pkt *pkt_rx = NULL;
+ struct ratpfs_file *rfile = f->priv;
+ int ret;
+
+ pr_debug("%s: len_tx=%i handle=%i pos=%i size=%i\n", __func__,
+ len_tx, rfile->handle, (int)f->pos, size);
+
+ pkt_tx->len = len_tx;
+ pkt_tx->data[0] = RATPFS_TYPE_READ_CALL;
+ put_unaligned_be32(rfile->handle, &pkt_tx->data[1]);
+ put_unaligned_be32(f->pos, &pkt_tx->data[5]);
+ put_unaligned_be32(size, &pkt_tx->data[9]);
+
+ ret = barebox_ratp_fs_call(pkt_tx, &pkt_rx);
+ if (ret) {
+ ret = -EIO;
+ goto out;
+ }
+
+ pr_debug("%s: len_rx=%i\n", __func__, pkt_rx->len);
+ if (pkt_rx->len < 1 || pkt_rx->data[0] != RATPFS_TYPE_READ_RETURN) {
+ pr_err("invalid read response\n");
+ ret = -EIO;
+ goto out;
+ }
+ size = pkt_rx->len - 1;
+ memcpy(buf, &pkt_rx->data[1], size);
+ ret = size;
+
+out:
+ free(pkt_rx);
+ return ret;
+}
+
+static loff_t ratpfs_lseek(struct device_d __always_unused *dev,
+ FILE *f, loff_t pos)
+{
+ pr_debug("%s\n", __func__);
+ f->pos = pos;
+ return f->pos;
+}
+
+static DIR* ratpfs_opendir(struct device_d __always_unused *dev,
+ const char *pathname)
+{
+ int len_name = strlen(pathname);
+ int len_tx = 1 /* type */
+ + len_name /* path */;
+ struct ratp_bb_pkt *pkt_tx = xzalloc(sizeof(*pkt_tx)+len_tx);
+ struct ratp_bb_pkt *pkt_rx = NULL;
+ struct ratpfs_dir *rdir = xzalloc(sizeof(*rdir));
+ int ret;
+
+ pr_debug("%s: len_tx=%i pathname='%s'\n", __func__, len_tx, pathname);
+
+ pkt_tx->len = len_tx;
+ pkt_tx->data[0] = RATPFS_TYPE_READDIR_CALL;
+ memcpy(&pkt_tx->data[1], pathname, len_name);
+
+ ret = barebox_ratp_fs_call(pkt_tx, &pkt_rx);
+ if (!ret) {
+ pr_debug("%s: len_rx=%i\n", __func__, pkt_rx->len);
+ if (pkt_rx->len < 1 || pkt_rx->data[0] !=
RATPFS_TYPE_READDIR_RETURN) {
+ pr_err("invalid readdir response\n");
+ free(pkt_rx);
+ return NULL;
+ }
+ rdir->len = pkt_rx->len - 1;
+ rdir->entries = xmemdup(&pkt_rx->data[1], rdir->len);
+ free(pkt_rx);
+ return &rdir->dir;
+ } else {
+ return NULL;
+ }
+}
+
+static struct dirent *ratpfs_readdir(struct device_d *dev, DIR *dir)
+{
+ struct ratpfs_dir *rdir = container_of(dir, struct ratpfs_dir, dir);
+ int i;
+
+ pr_debug("%s\n", __func__);
+
+ if (rdir->len <= rdir->off)
+ return NULL;
+
+ for (i = 0; rdir->off < rdir->len; rdir->off++, i++) {
+ dir->d.d_name[i] = rdir->entries[rdir->off];
+ if (dir->d.d_name[i] == 0)
+ break;
+ }
+ rdir->off++;
+
+ return &dir->d;
+}
+
+static int ratpfs_closedir(struct device_d *dev, DIR *dir)
+{
+ struct ratpfs_dir *rdir = container_of(dir, struct ratpfs_dir, dir);
+
+ pr_debug("%s\n", __func__);
+
+ free(rdir->entries);
+ free(rdir);
+
+ return 0;
+}
+
+static int ratpfs_stat(struct device_d __always_unused *dev,
+ const char *filename, struct stat *s)
+{
+ int len_name = strlen(filename);
+ int len_tx = 1 /* type */
+ + len_name; /* path */
+ struct ratp_bb_pkt *pkt_tx = xzalloc(sizeof(*pkt_tx) + len_tx);
+ struct ratp_bb_pkt *pkt_rx = NULL;
+ int ret;
+
+ pr_debug("%s: len_tx=%i filename='%s'\n", __func__, len_tx, filename);
+
+ pkt_tx->len = len_tx;
+ pkt_tx->data[0] = RATPFS_TYPE_STAT_CALL;
+ memcpy(&pkt_tx->data[1], filename, len_name);
+
+ ret = barebox_ratp_fs_call(pkt_tx, &pkt_rx);
+ if (ret) {
+ ret = -EIO;
+ goto out;
+ }
+
+ pr_debug("%s: len_rx=%i\n", __func__, pkt_rx->len);
+ if (pkt_rx->len < 6 || pkt_rx->data[0] != RATPFS_TYPE_STAT_RETURN) {
+ pr_err("invalid stat response\n");
+ goto out;
+ }
+ switch (pkt_rx->data[1]) {
+ case 0:
+ ret = -ENOENT;
+ break;
+ case 1:
+ s->st_mode = S_IFREG | S_IRWXU | S_IRWXG | S_IRWXO;
+ break;
+ case 2:
+ s->st_mode = S_IFDIR | S_IRWXU | S_IRWXG | S_IRWXO;
+ break;
+ }
+ s->st_size = get_unaligned_be32(&pkt_rx->data[2]);
+
+out:
+ free(pkt_rx);
+ return ret;
+}
+
+static int ratpfs_probe(struct device_d *dev)
+{
+ int len_tx = 1; /* type */
+ struct ratp_bb_pkt *pkt_tx = xzalloc(sizeof(*pkt_tx) + len_tx);
+ struct ratp_bb_pkt *pkt_rx = NULL;
+ int ret;
+ struct fs_device_d *fsdev = dev_to_fs_device(dev);
+
+ pr_debug("%s\n", __func__);
+
+ ret = barebox_ratp_fs_mount(fsdev->path);
+ if (ret)
+ return ret;
+
+ pkt_tx->len = len_tx;
+ pkt_tx->data[0] = RATPFS_TYPE_MOUNT_CALL;
+
+ ret = barebox_ratp_fs_call(pkt_tx, &pkt_rx);
+ if (ret)
+ goto out;
+
+ if (pkt_rx->len < 1 || pkt_rx->data[0] != RATPFS_TYPE_MOUNT_RETURN) {
+ pr_err("invalid mount response\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+out:
+ free(pkt_rx);
+
+ if (ret)
+ barebox_ratp_fs_mount(NULL);
+
+ return ret;
+}
+
+static void ratpfs_remove(struct device_d __always_unused *dev)
+{
+ pr_debug("%s\n", __func__);
+
+ barebox_ratp_fs_mount(NULL);
+}
+
+static struct fs_driver_d ratpfs_driver = {
+ .open = ratpfs_open,
+ .close = ratpfs_close,
+ .read = ratpfs_read,
+ .lseek = ratpfs_lseek,
+ .opendir = ratpfs_opendir,
+ .readdir = ratpfs_readdir,
+ .closedir = ratpfs_closedir,
+ .stat = ratpfs_stat,
+ .create = ratpfs_create,
+ .unlink = ratpfs_rm,
+ .mkdir = ratpfs_mkdir,
+ .rmdir = ratpfs_rm,
+ .write = ratpfs_write,
+ .truncate = ratpfs_truncate,
+ .flags = FS_DRIVER_NO_DEV,
+ .drv = {
+ .probe = ratpfs_probe,
+ .remove = ratpfs_remove,
+ .name = "ratpfs",
+ }
+};
+
+static int ratpfs_init(void)
+{
+ return register_fs_driver(&ratpfs_driver);
+}
+coredevice_initcall(ratpfs_init);
\ No newline at end of file
--
2.6.4
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