Add cat command to print file content to standard out

Signed-off-by: Roger Knecht rknecht@pm.me --- cmd/Kconfig | 6 ++++++ cmd/Makefile | 1 + cmd/cat.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 61 insertions(+) create mode 100644 cmd/cat.c

diff --git a/cmd/Kconfig b/cmd/Kconfig index 69c1814d24..2cb719795c 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -385,6 +385,12 @@ config CMD_ABOOTIMG

See doc/android/boot-image.rst for details.

+config CMD_CAT + bool "cat" + default y + help + print file to standard output + config CMD_ELF bool "bootelf, bootvx" default y diff --git a/cmd/Makefile b/cmd/Makefile index 5e43a1e022..589b9680ba 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -38,6 +38,7 @@ obj-$(CONFIG_CMD_BOOTZ) += bootz.o obj-$(CONFIG_CMD_BOOTI) += booti.o obj-$(CONFIG_CMD_BTRFS) += btrfs.o obj-$(CONFIG_CMD_BUTTON) += button.o +obj-$(CONFIG_CMD_CAT) += cat.o obj-$(CONFIG_CMD_CACHE) += cache.o obj-$(CONFIG_CMD_CBFS) += cbfs.o obj-$(CONFIG_CMD_CLK) += clk.o diff --git a/cmd/cat.c b/cmd/cat.c new file mode 100644 index 0000000000..4ba3b611aa --- /dev/null +++ b/cmd/cat.c @@ -0,0 +1,54 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2022 + * Roger Knecht rknecht@pm.de + */ + +#include <common.h> +#include <command.h> +#include <fs.h> +#include <malloc.h> + +static int do_cat(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + char *data; + loff_t index; + loff_t size; + int ret; + + if (argc < 4) + return CMD_RET_USAGE; + + ret = fs_set_blk_dev(argv[1], argv[2], FS_TYPE_ANY); + if (ret) + return ret; + + ret = fs_size(argv[3], &size); + if (ret) + return ret; + + data = malloc(size); + if (!data) + return -ENOMEM; + + ret = fs_set_blk_dev(argv[1], argv[2], FS_TYPE_ANY); + if (ret) + return ret; + + ret = fs_read(argv[3], (ulong)data, 0, 0, &size); + if (ret) + return ret; + + for (index = 0; index < size; index++) + putc(data[index]); + + free(data); + + return 0; +} + +U_BOOT_CMD(cat, 4, 1, do_cat, + "print file to standard output", + "<interface> <dev[:part]> file\n" + " - print file from 'dev' on 'interface' to standard output"); -- 2.17.1