kgzip is a kzip(8) replacement able to compress and link bootable

32-bit binaries in both ELF and a.out format.

Development sponsored by Global Technology Associates, Inc.

Reviewed/tested by: abial

1 files changed, 80 insertions, 0 deletions

diff --git a/usr.sbin/kgzip/kgzld.c b/usr.sbin/kgzip/kgzld.c
new file mode 100644
index 0000000..75bc7fc
--- /dev/null
+++ b/usr.sbin/kgzip/kgzld.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 1999 Global Technology Associates, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id:$
+ */
+
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include <err.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "elfhdr.h"
+#include "kgzip.h"
+
+#define KGZOFF sizeof(struct kgz_elfhdr)
+
+#define align(x, y) (((x) + (y) - 1) & ~((y) - 1))
+
+/*
+ * Link KGZ file and loader.
+ */
+void
+kgzld(struct kgz_hdr * kh, const char *f1, const char *f2)
+{
+    char addr[16];
+    struct iodesc idi;
+    pid_t pid;
+    size_t n;
+    int status;
+
+    if (strcmp(kh->ident, "KGZ")) {
+	if ((idi.fd = open(idi.fname = f1, O_RDONLY)) == -1)
+	    err(1, "%s", idi.fname);
+	n = xread(&idi, kh, sizeof(*kh), KGZOFF);
+	xclose(&idi);
+	if (n != sizeof(*kh) || strcmp(kh->ident, "KGZ"))
+	    errx(1, "%s: Invalid format", idi.fname);
+    }
+    sprintf(addr, "%#x", align(kh->dload + kh->dsize, 0x1000));
+    switch (pid = fork()) {
+    case -1:
+	err(1, NULL);
+    case 0:
+	execlp("ld", "ld", "-Ttext", addr, "-o", f2, loader, f1, NULL);
+	warn(NULL);
+	_exit(1);
+    default:
+	if ((pid = waitpid(pid, &status, 0)) == -1)
+	    err(1, NULL);
+	if (WIFSIGNALED(status) || WEXITSTATUS(status))
+	    exit(1);
+    }
+}