--- /dev/null
+/* $OpenBSD: rdsetroot.c,v 1.1 1997/04/20 23:38:17 downsj Exp $ */
+/* $NetBSD: rdsetroot.c,v 1.2 1995/10/13 16:38:39 gwr Exp $ */
+
+/*
+ * Copyright (c) 1994 Gordon W. Ross
+ * 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.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+ */
+
+/*
+ * Copy a ramdisk image into the space reserved for it.
+ * Kernel variables: rd_root_size, rd_root_image
+ */
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/mman.h>
+
+#include <stdio.h>
+#include <a.out.h>
+
+extern off_t lseek();
+
+struct exec head;
+char *file;
+
+/* Virtual addresses of the symbols we frob. */
+long rd_root_image_va, rd_root_size_va;
+
+/* Offsets relative to start of data segment. */
+long rd_root_image_off, rd_root_size_off;
+
+/* value in the location at rd_root_size_off */
+int rd_root_size_val;
+
+/* pointers to pieces of mapped file */
+char *dataseg;
+
+/* and lengths */
+int data_len;
+int data_off;
+int data_pgoff;
+
+main(argc,argv)
+ char **argv;
+{
+ int fd, n;
+ int *ip;
+ char *cp;
+
+ if (argc < 2) {
+ printf("%s: missing file name\n", argv[0]);
+ exit(1);
+ }
+ file = argv[1];
+
+ fd = open(file, O_RDWR);
+ if (fd < 0) {
+ perror(file);
+ exit(1);
+ }
+
+ n = read(fd, &head, sizeof(head));
+ if (n < sizeof(head)) {
+ printf("%s: reading header\n", file);
+ exit(1);
+ }
+
+ if (N_BADMAG(head)) {
+ printf("%s: bad magic number\n");
+ exit(1);
+ }
+
+#ifdef DEBUG
+ printf(" text: %9d\n", head.a_text);
+ printf(" data: %9d\n", head.a_data);
+ printf(" bss: %9d\n", head.a_bss);
+ printf(" syms: %9d\n", head.a_syms);
+ printf("entry: 0x%08X\n", head.a_entry);
+ printf("trsiz: %9d\n", head.a_trsize);
+ printf("drsiz: %9d\n", head.a_drsize);
+#endif
+
+ if (head.a_syms <= 0) {
+ printf("%s: no symbols\n", file);
+ exit(1);
+ }
+ if (head.a_trsize ||
+ head.a_drsize)
+ {
+ printf("%s: has relocations\n");
+ exit(1);
+ }
+
+ find_rd_root_image(file);
+
+ /*
+ * Map in the whole data segment.
+ * The file offset needs to be page aligned.
+ */
+ data_off = N_DATOFF(head);
+ data_len = head.a_data;
+ /* align... */
+ data_pgoff = N_PAGSIZ(head) - 1;
+ data_pgoff &= data_off;
+ data_off -= data_pgoff;
+ data_len += data_pgoff;
+ /* map in in... */
+ dataseg = mmap(NULL, /* any address is ok */
+ data_len, /* length */
+ PROT_READ | PROT_WRITE,
+ MAP_SHARED,
+ fd, data_off);
+ if ((long)dataseg == -1) {
+ printf("%s: can not map data seg\n", file);
+ perror(file);
+ exit(1);
+ }
+ dataseg += data_pgoff;
+
+ /*
+ * Find value in the location: rd_root_size
+ */
+ ip = (int*) (dataseg + rd_root_size_off);
+ rd_root_size_val = *ip;
+#ifdef DEBUG
+ printf("rd_root_size val: 0x%08X (%d blocks)\n",
+ rd_root_size_val, (rd_root_size_val >> 9));
+#endif
+
+ /*
+ * Copy the symbol table and string table.
+ */
+#ifdef DEBUG
+ printf("copying root image...\n");
+#endif
+ n = read(0, dataseg + rd_root_image_off,
+ rd_root_size_val);
+ if (n < 0) {
+ perror("read");
+ exit(1);
+ }
+
+ msync(dataseg - data_pgoff, data_len
+#ifdef sun
+ ,0
+#endif
+ );
+
+#ifdef DEBUG
+ printf("...copied %d bytes\n", n);
+#endif
+ close(fd);
+ exit(0);
+}
+
+
+/*
+ * Find locations of the symbols to patch.
+ */
+struct nlist wantsyms[] = {
+ { "_rd_root_size", 0 },
+ { "_rd_root_image", 0 },
+ { NULL, 0 },
+};
+
+find_rd_root_image(file)
+ char *file;
+{
+ int data_va;
+ int std_entry;
+
+ if (nlist(file, wantsyms)) {
+ printf("%s: no rd_root_image symbols?\n", file);
+ exit(1);
+ }
+ std_entry = N_TXTADDR(head) +
+ (head.a_entry & (N_PAGSIZ(head)-1));
+ data_va = N_DATADDR(head);
+ if (head.a_entry != std_entry) {
+ printf("%s: warning: non-standard entry point: 0x%08x\n",
+ file, head.a_entry);
+ printf("\texpecting entry=0x%X\n", std_entry);
+ data_va += (head.a_entry - std_entry);
+ }
+
+ rd_root_size_off = wantsyms[0].n_value - data_va;
+ rd_root_image_off = wantsyms[1].n_value - data_va;
+#ifdef DEBUG
+ printf(".data segment va: 0x%08X\n", data_va);
+ printf("rd_root_size va: 0x%08X\n", wantsyms[0].n_value);
+ printf("rd_root_image va: 0x%08X\n", wantsyms[1].n_value);
+ printf("rd_root_size off: 0x%08X\n", rd_root_size_off);
+ printf("rd_root_image off: 0x%08X\n", rd_root_image_off);
+#endif
+
+ /*
+ * Sanity check locations of db_* symbols
+ */
+ if (rd_root_image_off < 0 || rd_root_image_off >= head.a_data) {
+ printf("%s: rd_root_image not in data segment?\n", file);
+ exit(1);
+ }
+ if (rd_root_size_off < 0 || rd_root_size_off >= head.a_data) {
+ printf("%s: rd_root_size not in data segment?\n", file);
+ exit(1);
+ }
+}
+++ /dev/null
-/* $OpenBSD: rdsetroot.c,v 1.1 1997/02/16 18:19:59 downsj Exp $ */
-/* $NetBSD: rdsetroot.c,v 1.2 1995/10/13 16:38:39 gwr Exp $ */
-
-/*
- * Copyright (c) 1994 Gordon W. Ross
- * 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.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
- */
-
-/*
- * Copy a ramdisk image into the space reserved for it.
- * Kernel variables: rd_root_size, rd_root_image
- */
-
-#include <sys/types.h>
-#include <sys/file.h>
-#include <sys/mman.h>
-
-#include <stdio.h>
-#include <a.out.h>
-
-extern off_t lseek();
-
-struct exec head;
-char *file;
-
-/* Virtual addresses of the symbols we frob. */
-long rd_root_image_va, rd_root_size_va;
-
-/* Offsets relative to start of data segment. */
-long rd_root_image_off, rd_root_size_off;
-
-/* value in the location at rd_root_size_off */
-int rd_root_size_val;
-
-/* pointers to pieces of mapped file */
-char *dataseg;
-
-/* and lengths */
-int data_len;
-int data_off;
-int data_pgoff;
-
-main(argc,argv)
- char **argv;
-{
- int fd, n;
- int *ip;
- char *cp;
-
- if (argc < 2) {
- printf("%s: missing file name\n", argv[0]);
- exit(1);
- }
- file = argv[1];
-
- fd = open(file, O_RDWR);
- if (fd < 0) {
- perror(file);
- exit(1);
- }
-
- n = read(fd, &head, sizeof(head));
- if (n < sizeof(head)) {
- printf("%s: reading header\n", file);
- exit(1);
- }
-
- if (N_BADMAG(head)) {
- printf("%s: bad magic number\n");
- exit(1);
- }
-
-#ifdef DEBUG
- printf(" text: %9d\n", head.a_text);
- printf(" data: %9d\n", head.a_data);
- printf(" bss: %9d\n", head.a_bss);
- printf(" syms: %9d\n", head.a_syms);
- printf("entry: 0x%08X\n", head.a_entry);
- printf("trsiz: %9d\n", head.a_trsize);
- printf("drsiz: %9d\n", head.a_drsize);
-#endif
-
- if (head.a_syms <= 0) {
- printf("%s: no symbols\n", file);
- exit(1);
- }
- if (head.a_trsize ||
- head.a_drsize)
- {
- printf("%s: has relocations\n");
- exit(1);
- }
-
- find_rd_root_image(file);
-
- /*
- * Map in the whole data segment.
- * The file offset needs to be page aligned.
- */
- data_off = N_DATOFF(head);
- data_len = head.a_data;
- /* align... */
- data_pgoff = N_PAGSIZ(head) - 1;
- data_pgoff &= data_off;
- data_off -= data_pgoff;
- data_len += data_pgoff;
- /* map in in... */
- dataseg = mmap(NULL, /* any address is ok */
- data_len, /* length */
- PROT_READ | PROT_WRITE,
- MAP_SHARED,
- fd, data_off);
- if ((long)dataseg == -1) {
- printf("%s: can not map data seg\n", file);
- perror(file);
- exit(1);
- }
- dataseg += data_pgoff;
-
- /*
- * Find value in the location: rd_root_size
- */
- ip = (int*) (dataseg + rd_root_size_off);
- rd_root_size_val = *ip;
-#ifdef DEBUG
- printf("rd_root_size val: 0x%08X (%d blocks)\n",
- rd_root_size_val, (rd_root_size_val >> 9));
-#endif
-
- /*
- * Copy the symbol table and string table.
- */
-#ifdef DEBUG
- printf("copying root image...\n");
-#endif
- n = read(0, dataseg + rd_root_image_off,
- rd_root_size_val);
- if (n < 0) {
- perror("read");
- exit(1);
- }
-
- msync(dataseg - data_pgoff, data_len
-#ifdef sun
- ,0
-#endif
- );
-
-#ifdef DEBUG
- printf("...copied %d bytes\n", n);
-#endif
- close(fd);
- exit(0);
-}
-
-
-/*
- * Find locations of the symbols to patch.
- */
-struct nlist wantsyms[] = {
- { "_rd_root_size", 0 },
- { "_rd_root_image", 0 },
- { NULL, 0 },
-};
-
-find_rd_root_image(file)
- char *file;
-{
- int data_va;
- int std_entry;
-
- if (nlist(file, wantsyms)) {
- printf("%s: no rd_root_image symbols?\n", file);
- exit(1);
- }
- std_entry = N_TXTADDR(head) +
- (head.a_entry & (N_PAGSIZ(head)-1));
- data_va = N_DATADDR(head);
- if (head.a_entry != std_entry) {
- printf("%s: warning: non-standard entry point: 0x%08x\n",
- file, head.a_entry);
- printf("\texpecting entry=0x%X\n", std_entry);
- data_va += (head.a_entry - std_entry);
- }
-
- rd_root_size_off = wantsyms[0].n_value - data_va;
- rd_root_image_off = wantsyms[1].n_value - data_va;
-#ifdef DEBUG
- printf(".data segment va: 0x%08X\n", data_va);
- printf("rd_root_size va: 0x%08X\n", wantsyms[0].n_value);
- printf("rd_root_image va: 0x%08X\n", wantsyms[1].n_value);
- printf("rd_root_size off: 0x%08X\n", rd_root_size_off);
- printf("rd_root_image off: 0x%08X\n", rd_root_image_off);
-#endif
-
- /*
- * Sanity check locations of db_* symbols
- */
- if (rd_root_image_off < 0 || rd_root_image_off >= head.a_data) {
- printf("%s: rd_root_image not in data segment?\n", file);
- exit(1);
- }
- if (rd_root_size_off < 0 || rd_root_size_off >= head.a_data) {
- printf("%s: rd_root_size not in data segment?\n", file);
- exit(1);
- }
-}
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