2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
195 lines
6.5 KiB
C
195 lines
6.5 KiB
C
/* $NetBSD: nlist_aout.c,v 1.22 2009/08/20 11:08:59 martin Exp $ */
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/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char sccsid[] = "@(#)nlist.c 8.1 (Berkeley) 6/4/93";
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#else
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__RCSID("$NetBSD: nlist_aout.c,v 1.22 2009/08/20 11:08:59 martin Exp $");
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#endif
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#endif /* LIBC_SCCS and not lint */
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#include "namespace.h"
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#include <sys/param.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/file.h>
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#include <assert.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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struct nlist;
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#include "nlist_private.h"
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#ifdef NLIST_AOUT
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#include <a.out.h>
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#include <sys/exec_aout.h>
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int
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__fdnlist_aout(fd, list)
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int fd;
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struct nlist *list;
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{
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struct nlist *p, *s;
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char *strtab;
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off_t stroff, symoff;
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int nent;
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size_t strsize, symsize, cc;
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struct nlist nbuf[1024];
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struct exec exec;
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struct stat st;
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char *scoreboard, *scored;
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_DIAGASSERT(fd != -1);
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_DIAGASSERT(list != NULL);
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if (pread(fd, &exec, sizeof(exec), (off_t)0) != sizeof(exec) ||
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N_BADMAG(exec) || fstat(fd, &st) < 0)
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return (-1);
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symoff = N_SYMOFF(exec);
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symsize = (size_t)exec.a_syms;
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stroff = symoff + symsize;
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/* Check for files too large to mmap. */
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if ((uintmax_t)(st.st_size - stroff) > (uintmax_t)SIZE_T_MAX) {
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errno = EFBIG;
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return (-1);
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}
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/*
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* Map string table into our address space. This gives us
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* an easy way to randomly access all the strings, without
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* making the memory allocation permanent as with malloc/free
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* (i.e., munmap will return it to the system).
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*/
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strsize = (size_t)(st.st_size - stroff);
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strtab = mmap(NULL, strsize, PROT_READ, MAP_PRIVATE|MAP_FILE,
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fd, stroff);
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if (strtab == (char *)-1)
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return (-1);
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/*
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* clean out any left-over information for all valid entries.
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* Type and value defined to be 0 if not found; historical
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* versions cleared other and desc as well. Also figure out
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* the largest string length so don't read any more of the
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* string table than we have to.
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*
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* XXX clearing anything other than n_type and n_value violates
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* the semantics given in the man page.
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*/
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nent = 0;
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for (p = list; !ISLAST(p); ++p) {
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p->n_type = 0;
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p->n_other = 0;
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p->n_desc = 0;
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p->n_value = 0;
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++nent;
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}
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if (lseek(fd, symoff, SEEK_SET) == -1)
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return (-1);
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#if defined(__SSP__) || defined(__SSP_ALL__)
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scoreboard = malloc((size_t)nent);
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#else
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scoreboard = alloca((size_t)nent);
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#endif
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if (scoreboard == NULL)
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return (-1);
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(void)memset(scoreboard, 0, (size_t)nent);
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while (symsize > 0) {
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cc = MIN(symsize, sizeof(nbuf));
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if (read(fd, nbuf, cc) != (ssize_t) cc)
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break;
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symsize -= cc;
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for (s = nbuf; cc > 0; ++s, cc -= sizeof(*s)) {
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long soff = s->n_un.n_strx;
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if (soff == 0 || (s->n_type & N_STAB) != 0)
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continue;
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for (p = list, scored = scoreboard; !ISLAST(p);
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p++, scored++)
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if (*scored == 0 &&
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!strcmp(&strtab[(size_t)soff],
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p->n_un.n_name)) {
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p->n_value = s->n_value;
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p->n_type = s->n_type;
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p->n_desc = s->n_desc;
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p->n_other = s->n_other;
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*scored = 1;
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if (--nent <= 0)
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break;
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}
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}
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}
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munmap(strtab, strsize);
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#if defined(__SSP__) || defined(__SSP_ALL__)
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free(scoreboard);
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#endif
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return (nent);
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}
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#endif /* NLIST_AOUT */
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