diff options
author | Theo de Raadt <deraadt@cvs.openbsd.org> | 2001-05-11 15:23:13 +0000 |
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committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 2001-05-11 15:23:13 +0000 |
commit | dcd26c0665eab3962d13c9dfd52eb60bb14a96d6 (patch) | |
tree | 55174b65826188aeecdb8e675079d43395c345be /distrib/mvme88k/common | |
parent | 780f552a830cc7d27056633650d461fea061efe6 (diff) |
unify a.out rdsetroot
Diffstat (limited to 'distrib/mvme88k/common')
-rw-r--r-- | distrib/mvme88k/common/rdsetroot.c | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/distrib/mvme88k/common/rdsetroot.c b/distrib/mvme88k/common/rdsetroot.c deleted file mode 100644 index 62623c53191..00000000000 --- a/distrib/mvme88k/common/rdsetroot.c +++ /dev/null @@ -1,226 +0,0 @@ -/* $OpenBSD: rdsetroot.c,v 1.1 1998/12/17 02:16:30 smurph 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. - * - * $Id: rdsetroot.c,v 1.1 1998/12/17 02:16:30 smurph Exp $ - */ - -/* - * 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, 0); - -#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); - } -} |