84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws/*
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws * CDDL HEADER START
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws *
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws * The contents of this file are subject to the terms of the
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws * Common Development and Distribution License, Version 1.0 only
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws * (the "License"). You may not use this file except in compliance
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws * with the License.
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws *
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws * or http://www.opensolaris.org/os/licensing.
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws * See the License for the specific language governing permissions
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws * and limitations under the License.
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws *
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws * When distributing Covered Code, include this CDDL HEADER in each
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws * If applicable, add the following below this CDDL HEADER, with the
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws * fields enclosed by brackets "[]" replaced with your own identifying
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws * information: Portions Copyright [yyyy] [name of copyright owner]
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws *
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws * CDDL HEADER END
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws */
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws/*
e4586ebf2f01666696316c178da243993b1a0c04mws * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws * Use is subject to license terms.
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws */
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws#pragma ident "%Z%%M% %I% %E% SMI"
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws#include <sys/types.h>
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws#include <sys/smbios_impl.h>
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws#include <sys/sysmacros.h>
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws#include <sys/stat.h>
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws#include <sys/mman.h>
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
e4586ebf2f01666696316c178da243993b1a0c04mws#include <alloca.h>
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws#include <limits.h>
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws#include <unistd.h>
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws#include <strings.h>
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws#include <stdlib.h>
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws#include <errno.h>
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws#include <fcntl.h>
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws#pragma init(smb_init)
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mwsstatic void
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mwssmb_init(void)
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws{
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws _smb_debug = getenv("SMB_DEBUG") != NULL;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws}
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mwsstatic smbios_hdl_t *
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mwssmb_fileopen(int fd, int version, int flags, int *errp)
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws{
e4586ebf2f01666696316c178da243993b1a0c04mws smbios_entry_t *ep = alloca(SMB_ENTRY_MAXLEN);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws smbios_hdl_t *shp = NULL;
e4586ebf2f01666696316c178da243993b1a0c04mws ssize_t n, elen;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws void *stbuf;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
e4586ebf2f01666696316c178da243993b1a0c04mws if ((n = pread64(fd, ep, sizeof (*ep), 0)) != sizeof (*ep))
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (smb_open_error(shp, errp, n < 0 ? errno : ESMB_NOHDR));
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
e4586ebf2f01666696316c178da243993b1a0c04mws if (strncmp(ep->smbe_eanchor, SMB_ENTRY_EANCHOR, SMB_ENTRY_EANCHORLEN))
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (smb_open_error(shp, errp, ESMB_HEADER));
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
e4586ebf2f01666696316c178da243993b1a0c04mws elen = MIN(ep->smbe_elen, SMB_ENTRY_MAXLEN);
e4586ebf2f01666696316c178da243993b1a0c04mws
e4586ebf2f01666696316c178da243993b1a0c04mws if ((n = pread64(fd, ep, elen, 0)) != elen)
e4586ebf2f01666696316c178da243993b1a0c04mws return (smb_open_error(shp, errp, n < 0 ? errno : ESMB_NOHDR));
e4586ebf2f01666696316c178da243993b1a0c04mws
e4586ebf2f01666696316c178da243993b1a0c04mws if ((stbuf = smb_alloc(ep->smbe_stlen)) == NULL)
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (smb_open_error(shp, errp, ESMB_NOMEM));
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
e4586ebf2f01666696316c178da243993b1a0c04mws if ((n = pread64(fd, stbuf, ep->smbe_stlen,
e4586ebf2f01666696316c178da243993b1a0c04mws (off64_t)ep->smbe_staddr)) != ep->smbe_stlen) {
e4586ebf2f01666696316c178da243993b1a0c04mws smb_free(stbuf, ep->smbe_stlen);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (smb_open_error(shp, errp, n < 0 ? errno : ESMB_NOSTAB));
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws }
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
e4586ebf2f01666696316c178da243993b1a0c04mws shp = smbios_bufopen(ep, stbuf, ep->smbe_stlen, version, flags, errp);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws if (shp != NULL)
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws shp->sh_flags |= SMB_FL_BUFALLOC;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws else
e4586ebf2f01666696316c178da243993b1a0c04mws smb_free(stbuf, ep->smbe_stlen);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (shp);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws}
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mwsstatic smbios_hdl_t *
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mwssmb_biosopen(int fd, int version, int flags, int *errp)
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws{
e4586ebf2f01666696316c178da243993b1a0c04mws smbios_entry_t *ep = alloca(SMB_ENTRY_MAXLEN);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws smbios_hdl_t *shp = NULL;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws size_t pgsize, pgmask, pgoff;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws void *stbuf, *bios, *p, *q;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws bios = mmap(NULL, SMB_RANGE_LIMIT - SMB_RANGE_START + 1,
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws PROT_READ, MAP_SHARED, fd, (uint32_t)SMB_RANGE_START);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws if (bios == MAP_FAILED)
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (smb_open_error(shp, errp, ESMB_MAPDEV));
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws q = (void *)((uintptr_t)bios + SMB_RANGE_LIMIT - SMB_RANGE_START + 1);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws for (p = bios; p < q; p = (void *)((uintptr_t)p + 16)) {
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws if (strncmp(p, SMB_ENTRY_EANCHOR, SMB_ENTRY_EANCHORLEN) == 0)
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws break;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws }
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws if (p >= q) {
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws (void) munmap(bios, SMB_RANGE_LIMIT - SMB_RANGE_START + 1);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (smb_open_error(NULL, errp, ESMB_NOTFOUND));
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws }
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
e4586ebf2f01666696316c178da243993b1a0c04mws bcopy(p, ep, sizeof (smbios_entry_t));
e4586ebf2f01666696316c178da243993b1a0c04mws ep->smbe_elen = MIN(ep->smbe_elen, SMB_ENTRY_MAXLEN);
e4586ebf2f01666696316c178da243993b1a0c04mws bcopy(p, ep, ep->smbe_elen);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws (void) munmap(bios, SMB_RANGE_LIMIT - SMB_RANGE_START + 1);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws pgsize = getpagesize();
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws pgmask = ~(pgsize - 1);
e4586ebf2f01666696316c178da243993b1a0c04mws pgoff = ep->smbe_staddr & ~pgmask;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
e4586ebf2f01666696316c178da243993b1a0c04mws bios = mmap(NULL, ep->smbe_stlen + pgoff,
e4586ebf2f01666696316c178da243993b1a0c04mws PROT_READ, MAP_SHARED, fd, ep->smbe_staddr & pgmask);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws if (bios == MAP_FAILED)
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (smb_open_error(shp, errp, ESMB_MAPDEV));
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
e4586ebf2f01666696316c178da243993b1a0c04mws if ((stbuf = smb_alloc(ep->smbe_stlen)) == NULL) {
e4586ebf2f01666696316c178da243993b1a0c04mws (void) munmap(bios, ep->smbe_stlen + pgoff);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (smb_open_error(shp, errp, ESMB_NOMEM));
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws }
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
e4586ebf2f01666696316c178da243993b1a0c04mws bcopy((char *)bios + pgoff, stbuf, ep->smbe_stlen);
e4586ebf2f01666696316c178da243993b1a0c04mws (void) munmap(bios, ep->smbe_stlen + pgoff);
e4586ebf2f01666696316c178da243993b1a0c04mws shp = smbios_bufopen(ep, stbuf, ep->smbe_stlen, version, flags, errp);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws if (shp != NULL)
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws shp->sh_flags |= SMB_FL_BUFALLOC;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws else
e4586ebf2f01666696316c178da243993b1a0c04mws smb_free(stbuf, ep->smbe_stlen);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (shp);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws}
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mwssmbios_hdl_t *
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mwssmbios_fdopen(int fd, int version, int flags, int *errp)
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws{
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws struct stat64 st1, st2;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws if (stat64(SMB_BIOS_DEVICE, &st1) == 0 && fstat64(fd, &st2) == 0 &&
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws S_ISCHR(st2.st_mode) && st1.st_rdev == st2.st_rdev)
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (smb_biosopen(fd, version, flags, errp));
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws else
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (smb_fileopen(fd, version, flags, errp));
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws}
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mwssmbios_hdl_t *
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mwssmbios_open(const char *file, int version, int flags, int *errp)
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws{
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws smbios_hdl_t *shp;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws int fd;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws if ((fd = open64(file ? file : SMB_SMBIOS_DEVICE, O_RDONLY)) == -1) {
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws if ((errno == ENOENT || errno == ENXIO) &&
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws (file == NULL || strcmp(file, SMB_SMBIOS_DEVICE) == 0))
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws errno = ESMB_NOTFOUND;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (smb_open_error(NULL, errp, errno));
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws }
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws shp = smbios_fdopen(fd, version, flags, errp);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws (void) close(fd);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (shp);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws}
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mwsstatic int
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mwssmbios_xwrite(smbios_hdl_t *shp, int fd, const void *buf, size_t buflen)
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws{
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws ssize_t resid = buflen;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws ssize_t len;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws while (resid != 0) {
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws if ((len = write(fd, buf, resid)) <= 0)
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (smb_set_errno(shp, errno));
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws resid -= len;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws buf = (uchar_t *)buf + len;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws }
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (0);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws}
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mwsint
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mwssmbios_write(smbios_hdl_t *shp, int fd)
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws{
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws smbios_entry_t ep;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws off64_t off = lseek64(fd, 0, SEEK_CUR) + P2ROUNDUP(sizeof (ep), 16);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws if (off > UINT32_MAX)
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (smb_set_errno(shp, EOVERFLOW));
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws bcopy(&shp->sh_ent, &ep, sizeof (ep));
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws ep.smbe_staddr = (uint32_t)off;
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws smbios_checksum(shp, &ep);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws if (smbios_xwrite(shp, fd, &ep, sizeof (ep)) == -1 ||
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws lseek64(fd, off, SEEK_SET) != off ||
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws smbios_xwrite(shp, fd, shp->sh_buf, shp->sh_buflen) == -1)
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (-1);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws return (0);
84ab085a13f931bc78e7415e7ce921dbaa14fcb3mws}