diff options
author | Theo de Raadt <deraadt@cvs.openbsd.org> | 2013-10-18 14:04:25 +0000 |
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committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 2013-10-18 14:04:25 +0000 |
commit | a2ec7aa5c9b0b79425893920d7332bd61d738ea5 (patch) | |
tree | b9b3aa9b6aa4609e62a54eb3bfed0ad43a4b60bf /distrib | |
parent | 22f6148911aa607f3ed4f23c188b8ccc4515fc7c (diff) |
bye bye rdsetroot; ok miod
Diffstat (limited to 'distrib')
-rw-r--r-- | distrib/common/rdsetroot.c | 303 |
1 files changed, 0 insertions, 303 deletions
diff --git a/distrib/common/rdsetroot.c b/distrib/common/rdsetroot.c deleted file mode 100644 index 6b48b8237dd..00000000000 --- a/distrib/common/rdsetroot.c +++ /dev/null @@ -1,303 +0,0 @@ -/* $OpenBSD: rdsetroot.c,v 1.20 2009/04/17 07:23:27 deraadt Exp $ */ -/* $NetBSD: rdsetroot.c,v 1.2 1995/10/13 16:38:39 gwr Exp $ */ - -/* - * Copyright (c) 1994 Gordon W. Ross - * Copyright (c) 1997 Per Fogelstrom. (ELF modifications) - * 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 <sys/stat.h> - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <nlist.h> - -#include <a.out.h> -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 */ -off_t rd_root_size_val; - -/* pointers to pieces of mapped file */ -char *dataseg; - -/* and lengths */ -int data_len; -off_t mmap_off; -int data_pgoff; - -int find_rd_root_image(char *); -__dead void usage(void); - -int debug; - -int -main(int argc, char *argv[]) -{ - int ch, fd, n, xflag = 0, fsd; - char *fs = NULL; - u_int32_t *ip; - - while ((ch = getopt(argc, argv, "dx")) != -1) { - switch (ch) { - case 'd': - debug = 1; - break; - case 'x': - xflag = 1; - break; - default: - usage(); - } - } - argc -= optind; - argv += optind; - - if (argc == 1) - file = argv[0]; - else if (argc == 2) { - file = argv[0]; - fs = argv[1]; - } else - usage(); - - fd = open(file, xflag ? O_RDONLY : O_RDWR, 0644); - if (fd < 0) { - perror(file); - exit(1); - } - - if (fs) { - if (xflag) - fsd = open(fs, O_RDWR | O_CREAT | O_TRUNC, 0644); - else - fsd = open(fs, O_RDONLY, 0644); - } else { - if (xflag) - fsd = dup(STDOUT_FILENO); - else - fsd = dup(STDIN_FILENO); - } - if (fsd < 0) { - perror(fs); - exit(1); - } - - n = read(fd, &head, sizeof(head)); - if (n < sizeof(head)) { - fprintf(stderr, "%s: reading header\n", file); - exit(1); - } - - if (N_BADMAG(head)) { - fprintf(stderr, "%s: bad magic number\n", file); - exit(1); - } - - if (debug) { - fprintf(stderr, " text: %9d\n", head.a_text); - fprintf(stderr, " data: %9d\n", head.a_data); - fprintf(stderr, " bss: %9d\n", head.a_bss); - fprintf(stderr, " syms: %9d\n", head.a_syms); - fprintf(stderr, "entry: 0x%08X\n", head.a_entry); - fprintf(stderr, "trsiz: %9d\n", head.a_trsize); - fprintf(stderr, "drsiz: %9d\n", head.a_drsize); - } - - if (head.a_syms <= 0) { - fprintf(stderr, "%s: no symbols\n", file); - exit(1); - } - if (head.a_trsize || head.a_drsize) { - fprintf(stderr, "%s: has relocations\n", file); - exit(1); - } - - find_rd_root_image(file); - - /* - * Map in the whole data segment. - * The file offset needs to be page aligned. - */ - mmap_off = N_DATOFF(head); - -#ifdef BROKEN_NMAGIC - /* - * XXX it seems that our ld has a bug when generating NMAGIC files. - * the data segment ends up one page too far into the file. - */ - if (N_GETMAGIC(head) == NMAGIC) - mmap_off += __LDPGSZ; -#endif - - data_len = head.a_data; - /* align... */ - data_pgoff = N_PAGSIZ(head) - 1; - data_pgoff &= mmap_off; - mmap_off -= data_pgoff; - data_len += data_pgoff; - /* map in in... */ - dataseg = mmap(NULL, data_len, - xflag ? PROT_READ : PROT_READ | PROT_WRITE, - MAP_SHARED, fd, mmap_off); - if (dataseg == MAP_FAILED) { - fprintf(stderr, "%s: can not map data seg\n", file); - perror(file); - exit(1); - } - dataseg += data_pgoff; - - /* - * Find value in the location: rd_root_size - */ - ip = (u_int32_t *) (dataseg + rd_root_size_off); - rd_root_size_val = *ip; - if (debug) - fprintf(stderr, "rd_root_size val: 0x%llx (%lld blocks)\n", - (unsigned long long)rd_root_size_val, - (unsigned long long)rd_root_size_val >> 9); - - /* - * Copy the symbol table and string table. - */ - if (debug) - fprintf(stderr, "copying root image...\n"); - - if (xflag) { - n = write(fsd, dataseg + rd_root_image_off, - (size_t)rd_root_size_val); - if (n != rd_root_size_val) { - perror("write"); - exit(1); - } - } else { - struct stat sstat; - - if (fstat(fsd, &sstat) == -1) { - perror("fstat"); - exit(1); - } - if (S_ISREG(sstat.st_mode) && - sstat.st_size > rd_root_size_val) { - fprintf(stderr, "ramdisk too small 0x%llx 0x%llx\n", - (unsigned long long)sstat.st_size, - (unsigned long long)rd_root_size_val); - exit(1); - } - n = read(fsd, dataseg + rd_root_image_off, - (size_t)rd_root_size_val); - if (n < 0) { - perror("read"); - exit(1); - } - - msync(dataseg - data_pgoff, data_len, 0); - } - - if (debug) - fprintf(stderr, "...copied %d bytes\n", n); - exit(0); -} - - -/* - * Find locations of the symbols to patch. - */ -struct nlist wantsyms[] = { - { "_rd_root_size", 0 }, - { "_rd_root_image", 0 }, - { NULL, 0 } -}; - -int -find_rd_root_image(char *file) -{ - int data_va, std_entry; - - if (nlist(file, wantsyms)) { - fprintf(stderr, "%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) { - fprintf(stderr, - "%s: warning: non-standard entry point: 0x%08x\n", file, - head.a_entry); - fprintf(stderr, "\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; - - if (debug) { - fprintf(stderr, "data segment va: 0x%x\n", data_va); - fprintf(stderr, "rd_root_size va: 0x%x\n", wantsyms[0].n_value); - fprintf(stderr, "rd_root_image va: 0x%x\n", wantsyms[1].n_value); - fprintf(stderr, "rd_root_size off: 0x%x\n", rd_root_size_off); - fprintf(stderr, "rd_root_image off: 0x%x\n", rd_root_image_off); - } - - /* - * Sanity check locations of db_* symbols - */ - if (rd_root_image_off < 0 || rd_root_image_off >= head.a_data) { - fprintf(stderr, "%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) { - fprintf(stderr, "%s: rd_root_size not in data segment?\n", file); - exit(1); - } - return (1); -} - -__dead void -usage(void) -{ - extern char *__progname; - - fprintf(stderr, "usage: %s [-dx] bsd [fs]\n", __progname); - exit(1); -} |