1 files changed, 64 insertions, 0 deletions
diff --git a/commands/cat.c b/commands/cat.c
new file mode 100644
index 0000000000..72baae2e5e
--- /dev/null
+++ b/commands/cat.c
@@ -0,0 +1,64 @@
+#include <common.h>
+#include <command.h>
+#include <fs.h>
+#include <linux/ctype.h>
+#include <errno.h>
+#include <xfuncs.h>
+#include <malloc.h>
+
+static int do_cat(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	int ret;
+	int fd, i;
+	char *buf;
+	int err = 0;
+	int args = 1;
+
+	if (argc < 2) {
+		perror("cat");
+		return 1;
+	}
+
+	buf = xmalloc(1024);
+
+	while (args < argc) {
+		fd = open(argv[args], 0);
+		if (fd < 0) {
+			printf("could not open %s: %s\n", argv[args], errno_str());
+			goto out;
+		}
+
+		while((ret = read(fd, buf, 1024)) > 0) {
+			for(i = 0; i < ret; i++) {
+				if (isprint(buf[i]) || buf[i] == '\n' || buf[i] == '\t')
+					putc(buf[i]);
+				else
+					putc('.');
+			}
+			if(ctrlc()) {
+				err = 1;
+				close(fd);
+				goto out;
+			}
+		}
+		close(fd);
+		args++;
+	}
+
+out:
+	free(buf);
+
+	return err;
+}
+
+static __maybe_unused char cmd_cat_help[] =
+"Usage: cat [FILES]\n"
+"Concatenate files on stdout. Currently only printable characters\n"
+"and \\n and \\t are printed, but this should be optional\n";
+
+U_BOOT_CMD_START(cat)
+	.maxargs	= CONFIG_MAXARGS,
+	.cmd		= do_cat,
+	.usage		= "concatenate file(s)",
+	U_BOOT_CMD_HELP(cmd_cat_help)
+U_BOOT_CMD_END