mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-11-28 09:02:44 +00:00
Remove file system support based on the simple file system protocol
as this only allows us to access file systems that EFI knows about.
With a loader that can only use EFI-supported file systems, we're
forced to put /boot on the EFI system partition. This is suboptimal
in the following ways:
1. With /boot a symlink to /efi/boot, mergemaster complains about
the mismatch and there's no quick solution.
2. The EFI loader can only boot a single version of FreeBSD. There's
no way to install multiple versions of FreeBSD and select one
at the loader prompt.
3. ZFS maintains /boot/zfs/zpool.cache and with /boot a symlink we
end up with the file on a MSDOS file system. ZFS does not have
proper handling of file systems that are under Giant.
Implement a disk device based on the block I/O protocol instead and
pull in file system code from libstand. The disk devices are really
the partitions that EFI knows about.
This change is backward compatible.
MFC after: 1 week
This commit is contained in:
Marcel Moolenaar
parent
829089cc6f
commit
716f79c093
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=201941
@ -45,6 +45,7 @@ struct devdesc
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#define DEVT_CD 3
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#define DEVT_ZFS 4
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int d_unit;
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void *d_opendata;
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};
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/* Commands and return values; nonzero return sets command_errmsg != NULL */
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@ -34,9 +34,7 @@ extern EFI_SYSTEM_TABLE *ST;
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extern EFI_BOOT_SERVICES *BS;
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extern EFI_RUNTIME_SERVICES *RS;
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extern struct devsw efifs_dev;
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extern struct fs_ops efifs_fsops;
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extern struct devsw efipart_dev;
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extern struct devsw efinet_dev;
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extern struct netif_driver efinetif;
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@ -3,8 +3,8 @@
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LIB= efi
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INTERNALLIB=
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SRCS= delay.c efi_console.c efifs.c efinet.c errno.c handles.c libefi.c \
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time.c
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SRCS= delay.c efi_console.c efinet.c efipart.c errno.c handles.c \
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libefi.c time.c
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CFLAGS+= -I${.CURDIR}/../include
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CFLAGS+= -I${.CURDIR}/../include/${MACHINE_ARCH:S/amd64/i386/}
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@ -1,441 +0,0 @@
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/*-
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* Copyright (c) 2001 Doug Rabson
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* Copyright (c) 2006 Marcel Moolenaar
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/time.h>
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#include <stddef.h>
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#include <stdarg.h>
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#include <bootstrap.h>
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#include <efi.h>
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#include <efilib.h>
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#include <efiprot.h>
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/* Perform I/O in blocks of size EFI_BLOCK_SIZE. */
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#define EFI_BLOCK_SIZE (1024 * 1024)
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union fileinfo {
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EFI_FILE_INFO info;
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char bytes[sizeof(EFI_FILE_INFO) + 508];
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};
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static EFI_GUID sfs_guid = SIMPLE_FILE_SYSTEM_PROTOCOL;
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static EFI_GUID fs_guid = EFI_FILE_SYSTEM_INFO_ID;
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static EFI_GUID fi_guid = EFI_FILE_INFO_ID;
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static int
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efifs_open(const char *upath, struct open_file *f)
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{
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struct devdesc *dev = f->f_devdata;
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EFI_FILE_IO_INTERFACE *fsif;
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EFI_FILE *file, *root;
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EFI_HANDLE h;
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EFI_STATUS status;
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CHAR16 *cp, *path;
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if (f->f_dev != &efifs_dev || dev->d_unit < 0)
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return (EINVAL);
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h = efi_find_handle(f->f_dev, dev->d_unit);
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if (h == NULL)
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return (EINVAL);
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status = BS->HandleProtocol(h, &sfs_guid, (VOID **)&fsif);
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if (EFI_ERROR(status))
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return (efi_status_to_errno(status));
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/* Get the root directory. */
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status = fsif->OpenVolume(fsif, &root);
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if (EFI_ERROR(status))
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return (efi_status_to_errno(status));
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while (*upath == '/')
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upath++;
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/* Special case: opening the root directory. */
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if (*upath == '\0') {
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f->f_fsdata = root;
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return (0);
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}
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path = malloc((strlen(upath) + 1) * sizeof(CHAR16));
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if (path == NULL) {
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root->Close(root);
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return (ENOMEM);
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}
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cp = path;
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while (*upath != '\0') {
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if (*upath == '/') {
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*cp = '\\';
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while (upath[1] == '/')
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upath++;
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} else
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*cp = *upath;
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upath++;
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cp++;
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}
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*cp = 0;
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/* Open the file. */
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status = root->Open(root, &file, path,
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EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE, 0);
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if (status == EFI_ACCESS_DENIED || status == EFI_WRITE_PROTECTED)
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status = root->Open(root, &file, path, EFI_FILE_MODE_READ, 0);
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free(path);
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root->Close(root);
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if (EFI_ERROR(status))
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return (efi_status_to_errno(status));
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f->f_fsdata = file;
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return (0);
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}
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static int
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efifs_close(struct open_file *f)
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{
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EFI_FILE *file = f->f_fsdata;
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if (file == NULL)
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return (EBADF);
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file->Close(file);
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f->f_fsdata = NULL;
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return (0);
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}
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static int
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efifs_read(struct open_file *f, void *buf, size_t size, size_t *resid)
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{
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EFI_FILE *file = f->f_fsdata;
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EFI_STATUS status;
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UINTN sz = size;
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char *bufp;
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if (file == NULL)
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return (EBADF);
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bufp = buf;
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while (size > 0) {
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sz = size;
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if (sz > EFI_BLOCK_SIZE)
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sz = EFI_BLOCK_SIZE;
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status = file->Read(file, &sz, bufp);
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if (EFI_ERROR(status))
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return (efi_status_to_errno(status));
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if (sz == 0)
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break;
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size -= sz;
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bufp += sz;
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}
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if (resid)
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*resid = size;
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return (0);
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}
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static int
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efifs_write(struct open_file *f, void *buf, size_t size, size_t *resid)
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{
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EFI_FILE *file = f->f_fsdata;
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EFI_STATUS status;
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UINTN sz = size;
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char *bufp;
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if (file == NULL)
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return (EBADF);
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bufp = buf;
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while (size > 0) {
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sz = size;
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if (sz > EFI_BLOCK_SIZE)
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sz = EFI_BLOCK_SIZE;
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status = file->Write(file, &sz, bufp);
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if (EFI_ERROR(status))
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return (efi_status_to_errno(status));
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if (sz == 0)
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break;
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size -= sz;
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bufp += sz;
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}
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if (resid)
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*resid = size;
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return (0);
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}
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static off_t
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efifs_seek(struct open_file *f, off_t offset, int where)
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{
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EFI_FILE *file = f->f_fsdata;
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EFI_STATUS status;
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UINT64 base;
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if (file == NULL)
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return (EBADF);
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switch (where) {
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case SEEK_SET:
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break;
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case SEEK_END:
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status = file->SetPosition(file, ~0ULL);
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if (EFI_ERROR(status))
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return (-1);
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/* FALLTHROUGH */
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case SEEK_CUR:
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status = file->GetPosition(file, &base);
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if (EFI_ERROR(status))
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return (-1);
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offset = (off_t)(base + offset);
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break;
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default:
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return (-1);
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}
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if (offset < 0)
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return (-1);
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status = file->SetPosition(file, (UINT64)offset);
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return (EFI_ERROR(status) ? -1 : offset);
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}
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static int
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efifs_stat(struct open_file *f, struct stat *sb)
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{
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EFI_FILE *file = f->f_fsdata;
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union fileinfo fi;
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EFI_STATUS status;
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UINTN sz;
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if (file == NULL)
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return (EBADF);
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bzero(sb, sizeof(*sb));
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sz = sizeof(fi);
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status = file->GetInfo(file, &fi_guid, &sz, &fi);
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if (EFI_ERROR(status))
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return (efi_status_to_errno(status));
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sb->st_mode = S_IRUSR | S_IRGRP | S_IROTH;
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if ((fi.info.Attribute & EFI_FILE_READ_ONLY) == 0)
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sb->st_mode |= S_IWUSR | S_IWGRP | S_IWOTH;
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if (fi.info.Attribute & EFI_FILE_DIRECTORY)
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sb->st_mode |= S_IFDIR;
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else
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sb->st_mode |= S_IFREG;
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sb->st_nlink = 1;
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sb->st_atime = efi_time(&fi.info.LastAccessTime);
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sb->st_mtime = efi_time(&fi.info.ModificationTime);
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sb->st_ctime = efi_time(&fi.info.CreateTime);
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sb->st_size = fi.info.FileSize;
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sb->st_blocks = fi.info.PhysicalSize / S_BLKSIZE;
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sb->st_blksize = S_BLKSIZE;
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sb->st_birthtime = sb->st_ctime;
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return (0);
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}
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static int
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efifs_readdir(struct open_file *f, struct dirent *d)
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{
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EFI_FILE *file = f->f_fsdata;
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union fileinfo fi;
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EFI_STATUS status;
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UINTN sz;
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int i;
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if (file == NULL)
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return (EBADF);
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sz = sizeof(fi);
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status = file->Read(file, &sz, &fi);
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if (EFI_ERROR(status))
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return (efi_status_to_errno(status));
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if (sz == 0)
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return (ENOENT);
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d->d_fileno = 0;
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d->d_reclen = sizeof(*d);
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if (fi.info.Attribute & EFI_FILE_DIRECTORY)
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d->d_type = DT_DIR;
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else
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d->d_type = DT_REG;
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for (i = 0; fi.info.FileName[i] != 0; i++)
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d->d_name[i] = fi.info.FileName[i];
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d->d_name[i] = 0;
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d->d_namlen = i;
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return (0);
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}
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struct fs_ops efifs_fsops = {
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.fs_name = "efifs",
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.fo_open = efifs_open,
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.fo_close = efifs_close,
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.fo_read = efifs_read,
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.fo_write = efifs_write,
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.fo_seek = efifs_seek,
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.fo_stat = efifs_stat,
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.fo_readdir = efifs_readdir
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};
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static int
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efifs_dev_init(void)
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{
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EFI_HANDLE *handles;
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EFI_STATUS status;
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UINTN sz;
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int err;
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sz = 0;
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status = BS->LocateHandle(ByProtocol, &sfs_guid, 0, &sz, 0);
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if (status == EFI_BUFFER_TOO_SMALL) {
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handles = (EFI_HANDLE *)malloc(sz);
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status = BS->LocateHandle(ByProtocol, &sfs_guid, 0, &sz,
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handles);
|
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if (EFI_ERROR(status))
|
||||
free(handles);
|
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}
|
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if (EFI_ERROR(status))
|
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return (efi_status_to_errno(status));
|
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err = efi_register_handles(&efifs_dev, handles,
|
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sz / sizeof(EFI_HANDLE));
|
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free(handles);
|
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return (err);
|
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}
|
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|
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/*
|
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* Print information about disks
|
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*/
|
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static void
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efifs_dev_print(int verbose)
|
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{
|
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union {
|
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EFI_FILE_SYSTEM_INFO info;
|
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char buffer[1024];
|
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} fi;
|
||||
char line[80];
|
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EFI_FILE_IO_INTERFACE *fsif;
|
||||
EFI_FILE *volume;
|
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EFI_HANDLE h;
|
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EFI_STATUS status;
|
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UINTN sz;
|
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int i, unit;
|
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|
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for (unit = 0, h = efi_find_handle(&efifs_dev, 0);
|
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h != NULL; h = efi_find_handle(&efifs_dev, ++unit)) {
|
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sprintf(line, " %s%d: ", efifs_dev.dv_name, unit);
|
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pager_output(line);
|
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|
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status = BS->HandleProtocol(h, &sfs_guid, (VOID **)&fsif);
|
||||
if (EFI_ERROR(status))
|
||||
goto err;
|
||||
|
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status = fsif->OpenVolume(fsif, &volume);
|
||||
if (EFI_ERROR(status))
|
||||
goto err;
|
||||
|
||||
sz = sizeof(fi);
|
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status = volume->GetInfo(volume, &fs_guid, &sz, &fi);
|
||||
volume->Close(volume);
|
||||
if (EFI_ERROR(status))
|
||||
goto err;
|
||||
|
||||
if (fi.info.ReadOnly)
|
||||
pager_output("[RO] ");
|
||||
else
|
||||
pager_output(" ");
|
||||
for (i = 0; fi.info.VolumeLabel[i] != 0; i++)
|
||||
fi.buffer[i] = fi.info.VolumeLabel[i];
|
||||
fi.buffer[i] = 0;
|
||||
if (fi.buffer[0] != 0)
|
||||
pager_output(fi.buffer);
|
||||
else
|
||||
pager_output("EFI filesystem");
|
||||
pager_output("\n");
|
||||
continue;
|
||||
|
||||
err:
|
||||
sprintf(line, "[--] error %d: unable to obtain information\n",
|
||||
efi_status_to_errno(status));
|
||||
pager_output(line);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Attempt to open the disk described by (dev) for use by (f).
|
||||
*
|
||||
* Note that the philosophy here is "give them exactly what
|
||||
* they ask for". This is necessary because being too "smart"
|
||||
* about what the user might want leads to complications.
|
||||
* (eg. given no slice or partition value, with a disk that is
|
||||
* sliced - are they after the first BSD slice, or the DOS
|
||||
* slice before it?)
|
||||
*/
|
||||
static int
|
||||
efifs_dev_open(struct open_file *f, ...)
|
||||
{
|
||||
va_list args;
|
||||
struct devdesc *dev;
|
||||
|
||||
va_start(args, f);
|
||||
dev = va_arg(args, struct devdesc*);
|
||||
va_end(args);
|
||||
|
||||
if (dev->d_unit < 0)
|
||||
return(ENXIO);
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
efifs_dev_close(struct open_file *f)
|
||||
{
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
efifs_dev_strategy(void *devdata, int rw, daddr_t dblk, size_t size, char *buf, size_t *rsize)
|
||||
{
|
||||
|
||||
return (ENOSYS);
|
||||
}
|
||||
|
||||
struct devsw efifs_dev = {
|
||||
.dv_name = "fs",
|
||||
.dv_type = DEVT_DISK,
|
||||
.dv_init = efifs_dev_init,
|
||||
.dv_strategy = efifs_dev_strategy,
|
||||
.dv_open = efifs_dev_open,
|
||||
.dv_close = efifs_dev_close,
|
||||
.dv_ioctl = noioctl,
|
||||
.dv_print = efifs_dev_print,
|
||||
.dv_cleanup = NULL
|
||||
};
|
||||
265
sys/boot/efi/libefi/efipart.c
Normal file
265
sys/boot/efi/libefi/efipart.c
Normal file
@ -0,0 +1,265 @@
|
||||
/*-
|
||||
* Copyright (c) 2010 Marcel Moolenaar
|
||||
* 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.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/time.h>
|
||||
#include <stddef.h>
|
||||
#include <stdarg.h>
|
||||
|
||||
#include <bootstrap.h>
|
||||
|
||||
#include <efi.h>
|
||||
#include <efilib.h>
|
||||
#include <efiprot.h>
|
||||
|
||||
static EFI_GUID blkio_guid = BLOCK_IO_PROTOCOL;
|
||||
|
||||
static int efipart_init(void);
|
||||
static int efipart_strategy(void *, int, daddr_t, size_t, char *, size_t *);
|
||||
static int efipart_open(struct open_file *, ...);
|
||||
static int efipart_close(struct open_file *);
|
||||
static void efipart_print(int);
|
||||
|
||||
struct devsw efipart_dev = {
|
||||
.dv_name = "part",
|
||||
.dv_type = DEVT_DISK,
|
||||
.dv_init = efipart_init,
|
||||
.dv_strategy = efipart_strategy,
|
||||
.dv_open = efipart_open,
|
||||
.dv_close = efipart_close,
|
||||
.dv_ioctl = noioctl,
|
||||
.dv_print = efipart_print,
|
||||
.dv_cleanup = NULL
|
||||
};
|
||||
|
||||
static int
|
||||
efipart_init(void)
|
||||
{
|
||||
EFI_BLOCK_IO *blkio;
|
||||
EFI_HANDLE *hin, *hout;
|
||||
EFI_STATUS status;
|
||||
UINTN sz;
|
||||
u_int n, nin, nout;
|
||||
int err;
|
||||
|
||||
sz = 0;
|
||||
status = BS->LocateHandle(ByProtocol, &blkio_guid, 0, &sz, 0);
|
||||
if (status == EFI_BUFFER_TOO_SMALL) {
|
||||
hin = (EFI_HANDLE *)malloc(sz * 2);
|
||||
status = BS->LocateHandle(ByProtocol, &blkio_guid, 0, &sz,
|
||||
hin);
|
||||
if (EFI_ERROR(status))
|
||||
free(hin);
|
||||
}
|
||||
if (EFI_ERROR(status))
|
||||
return (efi_status_to_errno(status));
|
||||
|
||||
/* Filter handles to only include FreeBSD partitions. */
|
||||
nin = sz / sizeof(EFI_HANDLE);
|
||||
hout = hin + nin;
|
||||
nout = 0;
|
||||
|
||||
for (n = 0; n < nin; n++) {
|
||||
status = BS->HandleProtocol(hin[n], &blkio_guid, &blkio);
|
||||
if (EFI_ERROR(status))
|
||||
continue;
|
||||
if (!blkio->Media->LogicalPartition)
|
||||
continue;
|
||||
hout[nout] = hin[n];
|
||||
nout++;
|
||||
}
|
||||
|
||||
err = efi_register_handles(&efipart_dev, hout, nout);
|
||||
free(hin);
|
||||
return (err);
|
||||
}
|
||||
|
||||
static void
|
||||
efipart_print(int verbose)
|
||||
{
|
||||
char line[80];
|
||||
EFI_BLOCK_IO *blkio;
|
||||
EFI_HANDLE h;
|
||||
EFI_STATUS status;
|
||||
u_int unit;
|
||||
|
||||
for (unit = 0, h = efi_find_handle(&efipart_dev, 0);
|
||||
h != NULL; h = efi_find_handle(&efipart_dev, ++unit)) {
|
||||
sprintf(line, " %s%d:", efipart_dev.dv_name, unit);
|
||||
pager_output(line);
|
||||
|
||||
status = BS->HandleProtocol(h, &blkio_guid, &blkio);
|
||||
if (!EFI_ERROR(status)) {
|
||||
sprintf(line, " %llu blocks",
|
||||
(unsigned long long)(blkio->Media->LastBlock + 1));
|
||||
pager_output(line);
|
||||
if (blkio->Media->RemovableMedia)
|
||||
pager_output(" (removable)");
|
||||
}
|
||||
pager_output("\n");
|
||||
}
|
||||
}
|
||||
|
||||
static int
|
||||
efipart_open(struct open_file *f, ...)
|
||||
{
|
||||
va_list args;
|
||||
struct devdesc *dev;
|
||||
EFI_BLOCK_IO *blkio;
|
||||
EFI_HANDLE h;
|
||||
EFI_STATUS status;
|
||||
|
||||
va_start(args, f);
|
||||
dev = va_arg(args, struct devdesc*);
|
||||
va_end(args);
|
||||
|
||||
h = efi_find_handle(&efipart_dev, dev->d_unit);
|
||||
if (h == NULL)
|
||||
return (EINVAL);
|
||||
|
||||
status = BS->HandleProtocol(h, &blkio_guid, &blkio);
|
||||
if (EFI_ERROR(status))
|
||||
return (efi_status_to_errno(status));
|
||||
|
||||
if (!blkio->Media->MediaPresent)
|
||||
return (EAGAIN);
|
||||
|
||||
dev->d_opendata = blkio;
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
efipart_close(struct open_file *f)
|
||||
{
|
||||
struct devdesc *dev;
|
||||
|
||||
dev = (struct devdesc *)(f->f_devdata);
|
||||
if (dev->d_opendata == NULL)
|
||||
return (EINVAL);
|
||||
|
||||
dev->d_opendata = NULL;
|
||||
return (0);
|
||||
}
|
||||
|
||||
/*
|
||||
* efipart_readwrite()
|
||||
* Internal equivalent of efipart_strategy(), which operates on the
|
||||
* media-native block size. This function expects all I/O requests
|
||||
* to be within the media size and returns an error if such is not
|
||||
* the case.
|
||||
*/
|
||||
static int
|
||||
efipart_readwrite(EFI_BLOCK_IO *blkio, int rw, daddr_t blk, daddr_t nblks,
|
||||
char *buf)
|
||||
{
|
||||
EFI_STATUS status;
|
||||
|
||||
if (blkio == NULL)
|
||||
return (ENXIO);
|
||||
if (blk < 0 || blk > blkio->Media->LastBlock)
|
||||
return (EIO);
|
||||
if ((blk + nblks - 1) > blkio->Media->LastBlock)
|
||||
return (EIO);
|
||||
|
||||
switch (rw) {
|
||||
case F_READ:
|
||||
status = blkio->ReadBlocks(blkio, blkio->Media->MediaId, blk,
|
||||
nblks * blkio->Media->BlockSize, buf);
|
||||
break;
|
||||
case F_WRITE:
|
||||
if (blkio->Media->ReadOnly)
|
||||
return (EROFS);
|
||||
status = blkio->WriteBlocks(blkio, blkio->Media->MediaId, blk,
|
||||
nblks * blkio->Media->BlockSize, buf);
|
||||
break;
|
||||
default:
|
||||
return (ENOSYS);
|
||||
}
|
||||
|
||||
if (EFI_ERROR(status))
|
||||
printf("%s: rw=%d, status=%lu\n", __func__, rw, status);
|
||||
return (efi_status_to_errno(status));
|
||||
}
|
||||
|
||||
static int
|
||||
efipart_strategy(void *devdata, int rw, daddr_t blk, size_t size, char *buf,
|
||||
size_t *rsize)
|
||||
{
|
||||
struct devdesc *dev = (struct devdesc *)devdata;
|
||||
EFI_BLOCK_IO *blkio;
|
||||
off_t off;
|
||||
char *blkbuf;
|
||||
size_t blkoff, blksz;
|
||||
int error;
|
||||
|
||||
if (dev == NULL || blk < 0)
|
||||
return (EINVAL);
|
||||
|
||||
blkio = dev->d_opendata;
|
||||
if (blkio == NULL)
|
||||
return (ENXIO);
|
||||
|
||||
if (size == 0 || (size % 512) != 0)
|
||||
return (EIO);
|
||||
|
||||
if (rsize != NULL)
|
||||
*rsize = size;
|
||||
|
||||
if (blkio->Media->BlockSize == 512)
|
||||
return (efipart_readwrite(blkio, rw, blk, size / 512, buf));
|
||||
|
||||
/*
|
||||
* The block size of the media is not 512B per sector.
|
||||
*/
|
||||
blkbuf = malloc(blkio->Media->BlockSize);
|
||||
if (blkbuf == NULL)
|
||||
return (ENOMEM);
|
||||
|
||||
error = 0;
|
||||
off = blk * 512;
|
||||
blk = off / blkio->Media->BlockSize;
|
||||
blkoff = off % blkio->Media->BlockSize;
|
||||
blksz = blkio->Media->BlockSize - blkoff;
|
||||
while (size > 0) {
|
||||
error = efipart_readwrite(blkio, rw, blk, 1, blkbuf);
|
||||
if (error)
|
||||
break;
|
||||
if (size < blksz)
|
||||
blksz = size;
|
||||
bcopy(blkbuf + blkoff, buf, blksz);
|
||||
buf += blksz;
|
||||
size -= blksz;
|
||||
blk++;
|
||||
blkoff = 0;
|
||||
blksz = blkio->Media->BlockSize;
|
||||
}
|
||||
|
||||
free(blkbuf);
|
||||
return (error);
|
||||
}
|
||||
@ -49,15 +49,16 @@ __FBSDID("$FreeBSD$");
|
||||
|
||||
/* Exported for libstand */
|
||||
struct devsw *devsw[] = {
|
||||
&efifs_dev,
|
||||
&efipart_dev,
|
||||
&efinet_dev,
|
||||
NULL
|
||||
};
|
||||
|
||||
struct fs_ops *file_system[] = {
|
||||
&efifs_fsops,
|
||||
&nfs_fsops,
|
||||
&dosfs_fsops,
|
||||
&ufs_fsops,
|
||||
&cd9660_fsops,
|
||||
&nfs_fsops,
|
||||
&gzipfs_fsops,
|
||||
NULL
|
||||
};
|
||||
|
||||
@ -3,6 +3,9 @@ $FreeBSD$
|
||||
NOTE ANY CHANGES YOU MAKE TO THE BOOTBLOCKS HERE. The format of this
|
||||
file is important. Make sure the current version number is on line 6.
|
||||
|
||||
2.0: Provide devices based on the block I/O protocol, rather than the
|
||||
simple file services protocol. Use the FreeBSD file system code
|
||||
on top of those devices to access files.
|
||||
1.2: Restructured. Has some user visible differences.
|
||||
1.1: Pass the HCDP table address to the kernel via bootinfo if one
|
||||
is present in the EFI system table.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user