svn_rev_300

add exec command

common/cmd_exec.c

@@ -0,0 +1,85 @@
+#include <common.h>
+#include <command.h>
+#include <fs.h>
+#include <fcntl.h>
+#include <linux/stat.h>
+#include <errno.h>
+#include <malloc.h>
+
+#ifdef CONFIG_HUSH_PARSER
+#include <hush.h>
+#endif
+
+static void *read_file(const char *file)
+{
+	struct stat s;
+	void *buf = NULL;
+	int fd = 0;
+
+	if (stat(file, &s)) {
+		perror("stat");
+		return NULL;
+	}
+
+	fd = open(file, O_RDONLY);
+	if (fd < 0) {
+		perror("open");
+		return NULL;
+	}
+
+	buf = malloc(s.st_size + 1);
+
+	if (read(fd, buf, s.st_size) < s.st_size) {
+		perror("read");
+		goto out;
+	}
+
+	*(char *)(buf + s.st_size) = 0;
+	close(fd);
+	return buf;
+
+out:
+	free(buf);
+	close(fd);
+	return NULL;
+}
+
+int do_exec(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+	int i;
+	char *script;
+
+	if (argc < 2) {
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	for (i=1; i<argc; ++i) {
+		script = read_file(argv[i]);
+		if (!script)
+			return 1;
+
+#ifndef CONFIG_HUSH_PARSER
+		if (run_command (script, flag) == -1)
+			goto out;
+#else
+		if (parse_string_outer(script,
+		    FLAG_PARSE_SEMICOLON) != 0)
+			goto out;
+#endif
+		free(script);
+	}
+	return 0;
+
+out:
+	free(script);
+	return 1;
+}
+
+int do_exec (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
+U_BOOT_CMD(
+	exec,	CONFIG_MAXARGS,	1,	do_exec,
+	"exec     - execute a script\n",
+	"<filename> - execute <filename>\n"
+);
+