From e85ee07172eccafd9441362e774f7b184810d008 Mon Sep 17 00:00:00 2001
From: Robert de Bath <rdebath@poboxes.com>
Date: Fri, 31 May 1996 21:33:17 +0200
Subject: Import Dev86-0.0.6.tar.gz

---
 elksemu/binfmt_elks.c | 118 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 elksemu/binfmt_elks.c

(limited to 'elksemu/binfmt_elks.c')

diff --git a/elksemu/binfmt_elks.c b/elksemu/binfmt_elks.c
new file mode 100644
index 0000000..09e5a29
--- /dev/null
+++ b/elksemu/binfmt_elks.c
@@ -0,0 +1,118 @@
+/*
+ *  linux/fs/binfmt_elks.c
+ *
+ *  Copyright (C) 1996  Martin von Löwis
+ *  original #!-checking implemented by tytso.
+ *  ELKS hack added by Chad Page...
+ *  Cleaned up some more by Robert de Bath 
+ *                            I can't make it work with 1.2.13 tho! :-(
+ */
+
+#include <linux/module.h>
+#ifndef LINUX_VERSION_CODE
+#include <linux/version.h>
+#endif
+#include <linux/string.h>
+#include <linux/stat.h>
+#include <linux/malloc.h>
+#include <linux/binfmts.h>
+
+static int do_load_elksaout(struct linux_binprm *bprm,struct pt_regs *regs)
+{
+	char *cp, *interp, *i_name, *i_arg;
+	int retval;
+
+	/* What a horrible hack! :-) */
+	if ((bprm->buf[0] != 1)    || (bprm->buf[1] != 3) || 
+	    (bprm->buf[2] != 0x20) || (bprm->buf[3] != 4) ||
+	    bprm->sh_bang)
+		return -ENOEXEC;
+
+	bprm->sh_bang++;
+	iput(bprm->inode);
+#if LINUX_VERSION_CODE >= 0x010300
+	bprm->dont_iput=1;
+#endif
+
+	interp = "/lib/elksemu";
+	i_name = interp;
+	i_arg = 0;
+
+	for (cp=i_name; *cp && (*cp != ' ') && (*cp != '\t'); cp++) {
+ 		if (*cp == '/')
+			i_name = cp+1;
+	}
+
+	/*
+	 * OK, we've parsed out the interpreter name and
+	 * (optional) argument.
+	 * Splice in (1) the interpreter's name for argv[0]
+	 *           (2) (optional) argument to interpreter
+	 *           (3) filename of shell script (replace argv[0])
+	 *
+	 * This is done in reverse order, because of how the
+	 * user environment and arguments are stored.
+	 */
+	remove_arg_zero(bprm);
+	bprm->p = copy_strings(1, &bprm->filename, bprm->page, bprm->p, 2);
+	bprm->argc++;
+	if (i_arg) {
+		bprm->p = copy_strings(1, &i_arg, bprm->page, bprm->p, 2);
+		bprm->argc++;
+	}
+	bprm->p = copy_strings(1, &i_name, bprm->page, bprm->p, 2);
+	bprm->argc++;
+	if (!bprm->p) 
+		return -E2BIG;
+	/*
+	 * OK, now restart the process with the interpreter's inode.
+	 * Note that we use open_namei() as the name is now in kernel
+	 * space, and we don't need to copy it.
+	 */
+	retval = open_namei(interp, 0, 0, &bprm->inode, NULL);
+	if (retval)
+		return retval;
+#if LINUX_VERSION_CODE >= 0x010300
+	bprm->dont_iput=0;
+#endif
+	retval=prepare_binprm(bprm);
+	if(retval<0)
+		return retval;
+	return search_binary_handler(bprm,regs);
+}
+
+static int load_elksaout(struct linux_binprm *bprm,struct pt_regs *regs)
+{
+	int retval;
+	MOD_INC_USE_COUNT;
+	retval = do_load_elksaout(bprm,regs);
+	MOD_DEC_USE_COUNT;
+	return retval;
+}
+
+struct linux_binfmt elksaout_format = {
+#ifndef MODULE
+	NULL, 0, load_elksaout, NULL, NULL
+#else
+	NULL, &mod_use_count_, load_elksaout, NULL, NULL
+#endif
+};
+
+int init_elksaout_binfmt(void) {
+	return register_binfmt(&elksaout_format);
+}
+
+#ifdef MODULE
+#if LINUX_VERSION_CODE < 0x010300
+#include <linux/version.h>
+char kernel_version[] = UTS_RELEASE;
+#endif
+int init_module(void)
+{
+	return init_elksaout_binfmt();
+}
+
+void cleanup_module( void) {
+	unregister_binfmt(&elksaout_format);
+}
+#endif
-- 
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