2008-06-26 Robert Millan <rmh@aybabtu.com>
* disk/fs_uuid.c: New file.
* conf/common.rmk (pkglib_MODULES): Add `fs_uuid.mod'.
(fs_uuid_mod_SOURCES, fs_uuid_mod_CFLAGS)
(fs_uuid_mod_LDFLAGS): New variables.
* include/grub/disk.h (grub_disk_dev_id): Add
`GRUB_DISK_DEVICE_UUID_ID'.
* kern/disk.c (grub_disk_dev_iterate): Allow disk devices not to
implement iterate().
This commit is contained in:
robertmh
parent
37aaf354c9
commit
aebe3d13bb
6 changed files with 213 additions and 3 deletions
11
ChangeLog
11
ChangeLog
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@ -1,3 +1,14 @@
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2008-06-26 Robert Millan <rmh@aybabtu.com>
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* disk/fs_uuid.c: New file.
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* conf/common.rmk (pkglib_MODULES): Add `fs_uuid.mod'.
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(fs_uuid_mod_SOURCES, fs_uuid_mod_CFLAGS)
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(fs_uuid_mod_LDFLAGS): New variables.
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* include/grub/disk.h (grub_disk_dev_id): Add
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`GRUB_DISK_DEVICE_UUID_ID'.
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* kern/disk.c (grub_disk_dev_iterate): Allow disk devices not to
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implement iterate().
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2008-06-26 Robert Millan <rmh@aybabtu.com>
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* util/grub.d/10_linux.in: Avoid passing UUIDs to Linux when either
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@ -1938,7 +1938,7 @@ lvm_mod_LDFLAGS = $(COMMON_LDFLAGS)
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# Commands.
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pkglib_MODULES += hello.mod boot.mod terminal.mod ls.mod \
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cmp.mod cat.mod help.mod font.mod search.mod \
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loopback.mod configfile.mod echo.mod \
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loopback.mod fs_uuid.mod configfile.mod echo.mod \
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terminfo.mod test.mod blocklist.mod hexdump.mod \
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read.mod sleep.mod
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@ -2614,6 +2614,62 @@ partmap-loopback_mod-disk_loopback.lst: disk/loopback.c $(disk/loopback.c_DEPEND
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loopback_mod_CFLAGS = $(COMMON_CFLAGS)
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loopback_mod_LDFLAGS = $(COMMON_LDFLAGS)
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# For fs_uuid.mod
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fs_uuid_mod_SOURCES = disk/fs_uuid.c
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CLEANFILES += fs_uuid.mod mod-fs_uuid.o mod-fs_uuid.c pre-fs_uuid.o fs_uuid_mod-disk_fs_uuid.o und-fs_uuid.lst
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ifneq ($(fs_uuid_mod_EXPORTS),no)
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CLEANFILES += def-fs_uuid.lst
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DEFSYMFILES += def-fs_uuid.lst
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endif
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MOSTLYCLEANFILES += fs_uuid_mod-disk_fs_uuid.d
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UNDSYMFILES += und-fs_uuid.lst
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fs_uuid.mod: pre-fs_uuid.o mod-fs_uuid.o
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-rm -f $@
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$(TARGET_CC) $(fs_uuid_mod_LDFLAGS) $(TARGET_LDFLAGS) -Wl,-r,-d -o $@ $^
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$(STRIP) --strip-unneeded -K grub_mod_init -K grub_mod_fini -R .note -R .comment $@
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pre-fs_uuid.o: $(fs_uuid_mod_DEPENDENCIES) fs_uuid_mod-disk_fs_uuid.o
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-rm -f $@
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$(TARGET_CC) $(fs_uuid_mod_LDFLAGS) $(TARGET_LDFLAGS) -Wl,-r,-d -o $@ fs_uuid_mod-disk_fs_uuid.o
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mod-fs_uuid.o: mod-fs_uuid.c
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$(TARGET_CC) $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(fs_uuid_mod_CFLAGS) -c -o $@ $<
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mod-fs_uuid.c: moddep.lst genmodsrc.sh
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sh $(srcdir)/genmodsrc.sh 'fs_uuid' $< > $@ || (rm -f $@; exit 1)
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ifneq ($(fs_uuid_mod_EXPORTS),no)
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def-fs_uuid.lst: pre-fs_uuid.o
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$(NM) -g --defined-only -P -p $< | sed 's/^\([^ ]*\).*/\1 fs_uuid/' > $@
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endif
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und-fs_uuid.lst: pre-fs_uuid.o
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echo 'fs_uuid' > $@
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$(NM) -u -P -p $< | cut -f1 -d' ' >> $@
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fs_uuid_mod-disk_fs_uuid.o: disk/fs_uuid.c $(disk/fs_uuid.c_DEPENDENCIES)
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$(TARGET_CC) -Idisk -I$(srcdir)/disk $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(fs_uuid_mod_CFLAGS) -MD -c -o $@ $<
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-include fs_uuid_mod-disk_fs_uuid.d
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CLEANFILES += cmd-fs_uuid_mod-disk_fs_uuid.lst fs-fs_uuid_mod-disk_fs_uuid.lst partmap-fs_uuid_mod-disk_fs_uuid.lst
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COMMANDFILES += cmd-fs_uuid_mod-disk_fs_uuid.lst
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FSFILES += fs-fs_uuid_mod-disk_fs_uuid.lst
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PARTMAPFILES += partmap-fs_uuid_mod-disk_fs_uuid.lst
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cmd-fs_uuid_mod-disk_fs_uuid.lst: disk/fs_uuid.c $(disk/fs_uuid.c_DEPENDENCIES) gencmdlist.sh
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set -e; $(TARGET_CC) -Idisk -I$(srcdir)/disk $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(fs_uuid_mod_CFLAGS) -E $< | sh $(srcdir)/gencmdlist.sh fs_uuid > $@ || (rm -f $@; exit 1)
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fs-fs_uuid_mod-disk_fs_uuid.lst: disk/fs_uuid.c $(disk/fs_uuid.c_DEPENDENCIES) genfslist.sh
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set -e; $(TARGET_CC) -Idisk -I$(srcdir)/disk $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(fs_uuid_mod_CFLAGS) -E $< | sh $(srcdir)/genfslist.sh fs_uuid > $@ || (rm -f $@; exit 1)
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partmap-fs_uuid_mod-disk_fs_uuid.lst: disk/fs_uuid.c $(disk/fs_uuid.c_DEPENDENCIES) genpartmaplist.sh
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set -e; $(TARGET_CC) -Idisk -I$(srcdir)/disk $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(fs_uuid_mod_CFLAGS) -E $< | sh $(srcdir)/genpartmaplist.sh fs_uuid > $@ || (rm -f $@; exit 1)
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fs_uuid_mod_CFLAGS = $(COMMON_CFLAGS)
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fs_uuid_mod_LDFLAGS = $(COMMON_LDFLAGS)
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# For configfile.mod
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configfile_mod_SOURCES = commands/configfile.c
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CLEANFILES += configfile.mod mod-configfile.o mod-configfile.c pre-configfile.o configfile_mod-commands_configfile.o und-configfile.lst
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@ -280,7 +280,7 @@ lvm_mod_LDFLAGS = $(COMMON_LDFLAGS)
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# Commands.
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pkglib_MODULES += hello.mod boot.mod terminal.mod ls.mod \
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cmp.mod cat.mod help.mod font.mod search.mod \
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loopback.mod configfile.mod echo.mod \
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loopback.mod fs_uuid.mod configfile.mod echo.mod \
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terminfo.mod test.mod blocklist.mod hexdump.mod \
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read.mod sleep.mod
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@ -344,6 +344,11 @@ loopback_mod_SOURCES = disk/loopback.c
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loopback_mod_CFLAGS = $(COMMON_CFLAGS)
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loopback_mod_LDFLAGS = $(COMMON_LDFLAGS)
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# For fs_uuid.mod
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fs_uuid_mod_SOURCES = disk/fs_uuid.c
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fs_uuid_mod_CFLAGS = $(COMMON_CFLAGS)
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fs_uuid_mod_LDFLAGS = $(COMMON_LDFLAGS)
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# For configfile.mod
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configfile_mod_SOURCES = commands/configfile.c
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configfile_mod_CFLAGS = $(COMMON_CFLAGS)
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137
disk/fs_uuid.c
Normal file
137
disk/fs_uuid.c
Normal file
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@ -0,0 +1,137 @@
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/* fs_uuid.c - Access disks by their filesystem UUID. */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2007,2008 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/disk.h>
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#include <grub/dl.h>
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#include <grub/kernel.h>
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#include <grub/misc.h>
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#include <grub/mm.h>
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#include <grub/types.h>
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#include <grub/fs.h>
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static grub_device_t
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search_fs_uuid (const char *key, unsigned long *count)
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{
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*count = 0;
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grub_device_t ret = NULL;
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auto int iterate_device (const char *name);
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int iterate_device (const char *name)
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{
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grub_device_t dev;
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dev = grub_device_open (name);
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if (dev)
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{
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grub_fs_t fs;
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fs = grub_fs_probe (dev);
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if (fs && fs->uuid)
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{
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char *uuid;
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(fs->uuid) (dev, &uuid);
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if (grub_errno == GRUB_ERR_NONE && uuid)
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{
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*count++;
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if (grub_strcmp (uuid, key) == 0)
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{
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ret = dev;
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grub_free (uuid);
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return 1;
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}
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grub_free (uuid);
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}
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}
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grub_device_close (dev);
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}
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grub_errno = GRUB_ERR_NONE;
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return 0;
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}
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grub_device_iterate (iterate_device);
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return ret;
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}
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static grub_err_t
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grub_fs_uuid_open (const char *name, grub_disk_t disk)
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{
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grub_device_t dev;
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if (grub_strncmp (name, "UUID=", sizeof ("UUID=")-1))
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return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "not a UUID virtual volume");
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dev = search_fs_uuid (name + sizeof ("UUID=") - 1, &disk->id);
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if (! dev)
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return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "no matching UUID found");
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disk->total_sectors = dev->disk->total_sectors;
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disk->has_partitions = 0;
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disk->partition = dev->disk->partition;
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disk->data = dev->disk;
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return GRUB_ERR_NONE;
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}
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static void
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grub_fs_uuid_close (grub_disk_t disk __attribute((unused)))
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{
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}
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static grub_err_t
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grub_fs_uuid_read (grub_disk_t disk, grub_disk_addr_t sector,
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grub_size_t size, char *buf)
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{
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grub_disk_t parent = disk->data;
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return parent->dev->read (parent, sector, size, buf);
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}
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static grub_err_t
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grub_fs_uuid_write (grub_disk_t disk, grub_disk_addr_t sector,
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grub_size_t size, const char *buf)
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{
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grub_disk_t parent = disk->data;
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return parent->dev->write (parent, sector, size, buf);
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}
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static struct grub_disk_dev grub_fs_uuid_dev =
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{
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.name = "fs_uuid",
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.id = GRUB_DISK_DEVICE_UUID_ID,
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.open = grub_fs_uuid_open,
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.close = grub_fs_uuid_close,
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.read = grub_fs_uuid_read,
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.write = grub_fs_uuid_write,
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.next = 0
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};
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GRUB_MOD_INIT(fs_uuid)
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{
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grub_disk_dev_register (&grub_fs_uuid_dev);
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}
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GRUB_MOD_FINI(fs_uuid)
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{
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grub_disk_dev_unregister (&grub_fs_uuid_dev);
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}
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@ -38,6 +38,7 @@ enum grub_disk_dev_id
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GRUB_DISK_DEVICE_ATA_ID,
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GRUB_DISK_DEVICE_MEMDISK_ID,
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GRUB_DISK_DEVICE_NAND_ID,
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GRUB_DISK_DEVICE_UUID_ID,
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};
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struct grub_disk;
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@ -202,7 +202,7 @@ grub_disk_dev_iterate (int (*hook) (const char *name))
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grub_disk_dev_t p;
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for (p = grub_disk_dev_list; p; p = p->next)
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if ((p->iterate) (hook))
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if (p->iterate && (p->iterate) (hook))
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return 1;
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return 0;
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