* conf/common.rmk (bin_UTILITIES): Add grub-editenv.
(grub_editenv_SOURCES): New variable.
(pkglib_MODULES): Add loadenv.mod.
(loadenv_mod_SOURCES): New variable.
(loadenv_mod_CFLAGS): Likewise.
(loadenv_mod_LDFLAGS): Likewise.
* include/grub/envblk.h: New file.
* util/envblk.c: New file.
* util/grub-editenv.c: New file.
* commands/loadenv.c: New file.
+2008-07-02 Bean <bean123ch@gmail.com>
+
+ * conf/common.rmk (bin_UTILITIES): Add grub-editenv.
+ (grub_editenv_SOURCES): New variable.
+ (pkglib_MODULES): Add loadenv.mod.
+ (loadenv_mod_SOURCES): New variable.
+ (loadenv_mod_CFLAGS): Likewise.
+ (loadenv_mod_LDFLAGS): Likewise.
+
+ * include/grub/envblk.h: New file.
+
+ * util/envblk.c: New file.
+
+ * util/grub-editenv.c: New file.
+
+ * commands/loadenv.c: New file.
+
2008-07-01 Pavel Roskin <proski@gnu.org>
* include/multiboot2.h (struct multiboot_tag_module): Use char,
--- /dev/null
+/* loadenv.c - command to load/save environment variable. */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2008 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/normal.h>
+#include <grub/dl.h>
+#include <grub/mm.h>
+#include <grub/arg.h>
+#include <grub/file.h>
+#include <grub/disk.h>
+#include <grub/misc.h>
+#include <grub/env.h>
+#include <grub/envblk.h>
+#include <grub/partition.h>
+
+static const struct grub_arg_option options[] =
+ {
+ {"file", 'f', 0, "specify filename", 0, ARG_TYPE_PATHNAME},
+ {0, 0, 0, 0, 0, 0}
+ };
+
+char buffer[GRUB_ENVBLK_MAXLEN];
+grub_envblk_t envblk;
+
+static grub_file_t
+read_envblk_file (char *filename, void NESTED_FUNC_ATTR read_hook (grub_disk_addr_t sector, unsigned offset, unsigned length))
+{
+ char *buf = 0;
+ grub_file_t file;
+
+ if (! filename)
+ {
+ char *prefix;
+
+ prefix = grub_env_get ("prefix");
+ if (prefix)
+ {
+ int len;
+
+ len = grub_strlen (prefix);
+ buf = grub_malloc (len + 1 + sizeof (GRUB_ENVBLK_DEFCFG));
+ grub_strcpy (buf, prefix);
+ buf[len] = '/';
+ grub_strcpy (buf + len + 1, GRUB_ENVBLK_DEFCFG);
+ filename = buf;
+ }
+ else
+ {
+ grub_error (GRUB_ERR_FILE_NOT_FOUND, "prefix is not found");
+ return 0;
+ }
+ }
+
+ file = grub_file_open (filename);
+ grub_free (buf);
+ if (! file)
+ return 0;
+
+ if (read_hook)
+ {
+ if (! file->device->disk)
+ {
+ grub_file_close (file);
+ grub_error (GRUB_ERR_BAD_DEVICE,
+ "this command is available only for disk devices.");
+ return 0;
+ }
+ file->read_hook = read_hook;
+ }
+
+ if (grub_file_read (file, buffer, GRUB_ENVBLK_MAXLEN) != GRUB_ENVBLK_MAXLEN)
+ {
+ grub_file_close (file);
+ grub_error (GRUB_ERR_BAD_FILE_TYPE, "file too short");
+ return 0;
+ }
+
+ envblk = grub_envblk_find (buffer);
+ if (! envblk)
+ {
+ grub_file_close (file);
+ grub_error (GRUB_ERR_BAD_FILE_TYPE, "environment block not found");
+ return 0;
+ }
+
+ return file;
+}
+
+static grub_err_t
+grub_cmd_load_env (struct grub_arg_list *state,
+ int argc __attribute__ ((unused)), char **args __attribute__ ((unused)))
+
+{
+ grub_file_t file;
+
+ auto int hook (char *name, char *value);
+ int hook (char *name, char *value)
+ {
+ grub_env_set (name, value);
+
+ return 0;
+ }
+
+ file = read_envblk_file ((state[0].set) ? state[0].arg : 0, 0);
+ if (! file)
+ return grub_errno;
+
+ grub_file_close (file);
+
+ grub_envblk_iterate (envblk, hook);
+
+ return grub_errno;
+}
+
+static grub_err_t
+grub_cmd_list_env (struct grub_arg_list *state,
+ int argc __attribute__ ((unused)), char **args __attribute__ ((unused)))
+{
+ grub_file_t file;
+
+ auto int hook (char *name, char *value);
+ int hook (char *name, char *value)
+ {
+ grub_printf ("%s=%s\n", name, value);
+
+ return 0;
+ }
+
+ file = read_envblk_file ((state[0].set) ? state[0].arg : 0, 0);
+ if (! file)
+ return grub_errno;
+
+ grub_file_close (file);
+
+ grub_envblk_iterate (envblk, hook);
+
+ return grub_errno;
+}
+
+static grub_err_t
+grub_cmd_save_env (struct grub_arg_list *state, int argc, char **args)
+{
+ grub_file_t file;
+ grub_disk_t disk;
+ grub_disk_addr_t addr[GRUB_ENVBLK_MAXLEN >> GRUB_DISK_SECTOR_BITS];
+ char buf[GRUB_DISK_SECTOR_SIZE];
+ grub_disk_addr_t part_start = 0;
+ int num = 0;
+
+ auto void NESTED_FUNC_ATTR hook (grub_disk_addr_t sector, unsigned offset,
+ unsigned length);
+
+ void NESTED_FUNC_ATTR hook (grub_disk_addr_t sector,
+ unsigned offset, unsigned length)
+ {
+ if ((offset != 0) || (length != GRUB_DISK_SECTOR_SIZE))
+ return;
+
+ if (num < (GRUB_ENVBLK_MAXLEN >> GRUB_DISK_SECTOR_BITS))
+ addr[num++] = sector;
+ }
+
+ if (! argc)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, "No variable is specified");
+
+ file = read_envblk_file ((state[0].set) ? state[0].arg : 0, hook);
+ if (! file)
+ return grub_errno;
+
+ file->read_hook = 0;
+
+ if (num != GRUB_ENVBLK_MAXLEN >> GRUB_DISK_SECTOR_BITS)
+ {
+ grub_error (GRUB_ERR_BAD_DEVICE, "invalid blocklist");
+ goto quit;
+ }
+
+ disk = file->device->disk;
+ if (disk->partition)
+ part_start = grub_partition_get_start (disk->partition);
+
+ for (num = 0; num < (GRUB_ENVBLK_MAXLEN >> GRUB_DISK_SECTOR_BITS); num++)
+ {
+ if (grub_disk_read (disk, addr[num] - part_start, 0,
+ GRUB_DISK_SECTOR_SIZE, buf))
+ goto quit;
+
+ if (grub_memcmp (&buffer[num << GRUB_DISK_SECTOR_BITS], buf,
+ GRUB_DISK_SECTOR_SIZE))
+ {
+ grub_error (GRUB_ERR_BAD_DEVICE, "invalid blocklist");
+ goto quit;
+ }
+ }
+
+ while (argc)
+ {
+ char *value;
+
+ value = grub_env_get (args[0]);
+ if (value)
+ {
+ if (grub_envblk_insert (envblk, args[0], value))
+ {
+ grub_error (GRUB_ERR_BAD_ARGUMENT, "environment block too small");
+ goto quit;
+ }
+ }
+
+ argc--;
+ args++;
+ }
+
+ for (num = 0; num < (GRUB_ENVBLK_MAXLEN >> GRUB_DISK_SECTOR_BITS); num++)
+ if (grub_disk_write (disk, addr[num] - part_start, 0,
+ GRUB_DISK_SECTOR_SIZE,
+ &buffer[num << GRUB_DISK_SECTOR_BITS]))
+ goto quit;
+
+quit:
+ grub_file_close (file);
+
+ return grub_errno;
+}
+
+GRUB_MOD_INIT(loadenv)
+{
+ (void) mod;
+ grub_register_command ("load_env", grub_cmd_load_env, GRUB_COMMAND_FLAG_BOTH,
+ "load_env [-f FILE]", "Load variables from environment block file.", options);
+ grub_register_command ("list_env", grub_cmd_list_env, GRUB_COMMAND_FLAG_BOTH,
+ "list_env [-f FILE]", "List variables from environment block file.", options);
+ grub_register_command ("save_env", grub_cmd_save_env, GRUB_COMMAND_FLAG_BOTH,
+ "save_env [-f FILE] variable_name [...]", "Save variables to environment block file.", options);
+}
+
+GRUB_MOD_FINI(loadenv)
+{
+ grub_unregister_command ("load_env");
+ grub_unregister_command ("list_env");
+ grub_unregister_command ("save_env");
+}
rm -f $@; sh $(srcdir)/geninit.sh $< $(filter %.c,$^) > $@
DISTCLEANFILES += grub_fstest_init.c
+# for grub-editenv
+bin_UTILITIES += grub-editenv
+grub_editenv_SOURCES = util/grub-editenv.c util/envblk.c util/misc.c kern/misc.c kern/err.c
+CLEANFILES += grub-editenv grub_editenv-util_grub_editenv.o grub_editenv-util_envblk.o grub_editenv-util_misc.o grub_editenv-kern_misc.o grub_editenv-kern_err.o
+MOSTLYCLEANFILES += grub_editenv-util_grub_editenv.d grub_editenv-util_envblk.d grub_editenv-util_misc.d grub_editenv-kern_misc.d grub_editenv-kern_err.d
+
+grub-editenv: $(grub_editenv_DEPENDENCIES) grub_editenv-util_grub_editenv.o grub_editenv-util_envblk.o grub_editenv-util_misc.o grub_editenv-kern_misc.o grub_editenv-kern_err.o
+ $(CC) -o $@ grub_editenv-util_grub_editenv.o grub_editenv-util_envblk.o grub_editenv-util_misc.o grub_editenv-kern_misc.o grub_editenv-kern_err.o $(LDFLAGS) $(grub_editenv_LDFLAGS)
+
+grub_editenv-util_grub_editenv.o: util/grub-editenv.c $(util/grub-editenv.c_DEPENDENCIES)
+ $(CC) -Iutil -I$(srcdir)/util $(CPPFLAGS) $(CFLAGS) -DGRUB_UTIL=1 $(grub_editenv_CFLAGS) -MD -c -o $@ $<
+-include grub_editenv-util_grub_editenv.d
+
+grub_editenv-util_envblk.o: util/envblk.c $(util/envblk.c_DEPENDENCIES)
+ $(CC) -Iutil -I$(srcdir)/util $(CPPFLAGS) $(CFLAGS) -DGRUB_UTIL=1 $(grub_editenv_CFLAGS) -MD -c -o $@ $<
+-include grub_editenv-util_envblk.d
+
+grub_editenv-util_misc.o: util/misc.c $(util/misc.c_DEPENDENCIES)
+ $(CC) -Iutil -I$(srcdir)/util $(CPPFLAGS) $(CFLAGS) -DGRUB_UTIL=1 $(grub_editenv_CFLAGS) -MD -c -o $@ $<
+-include grub_editenv-util_misc.d
+
+grub_editenv-kern_misc.o: kern/misc.c $(kern/misc.c_DEPENDENCIES)
+ $(CC) -Ikern -I$(srcdir)/kern $(CPPFLAGS) $(CFLAGS) -DGRUB_UTIL=1 $(grub_editenv_CFLAGS) -MD -c -o $@ $<
+-include grub_editenv-kern_misc.d
+
+grub_editenv-kern_err.o: kern/err.c $(kern/err.c_DEPENDENCIES)
+ $(CC) -Ikern -I$(srcdir)/kern $(CPPFLAGS) $(CFLAGS) -DGRUB_UTIL=1 $(grub_editenv_CFLAGS) -MD -c -o $@ $<
+-include grub_editenv-kern_err.d
+
+CLEANFILES += grub-editenv
+
# For update-grub
update-grub: util/update-grub.in config.status
./config.status --file=$@:$<
cmp.mod cat.mod help.mod font.mod search.mod \
loopback.mod fs_uuid.mod configfile.mod echo.mod \
terminfo.mod test.mod blocklist.mod hexdump.mod \
- read.mod sleep.mod
+ read.mod sleep.mod loadenv.mod
# For hello.mod.
hello_mod_SOURCES = hello/hello.c
hexdump_mod_CFLAGS = $(COMMON_CFLAGS)
hexdump_mod_LDFLAGS = $(COMMON_LDFLAGS)
+# For read.mod.
+read_mod_SOURCES = commands/read.c
+CLEANFILES += read.mod mod-read.o mod-read.c pre-read.o read_mod-commands_read.o und-read.lst
+ifneq ($(read_mod_EXPORTS),no)
+CLEANFILES += def-read.lst
+DEFSYMFILES += def-read.lst
+endif
+MOSTLYCLEANFILES += read_mod-commands_read.d
+UNDSYMFILES += und-read.lst
+
+read.mod: pre-read.o mod-read.o
+ -rm -f $@
+ $(TARGET_CC) $(read_mod_LDFLAGS) $(TARGET_LDFLAGS) -Wl,-r,-d -o $@ $^
+ $(STRIP) --strip-unneeded -K grub_mod_init -K grub_mod_fini -R .note -R .comment $@
+
+pre-read.o: $(read_mod_DEPENDENCIES) read_mod-commands_read.o
+ -rm -f $@
+ $(TARGET_CC) $(read_mod_LDFLAGS) $(TARGET_LDFLAGS) -Wl,-r,-d -o $@ read_mod-commands_read.o
+
+mod-read.o: mod-read.c
+ $(TARGET_CC) $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(read_mod_CFLAGS) -c -o $@ $<
+
+mod-read.c: moddep.lst genmodsrc.sh
+ sh $(srcdir)/genmodsrc.sh 'read' $< > $@ || (rm -f $@; exit 1)
+
+ifneq ($(read_mod_EXPORTS),no)
+def-read.lst: pre-read.o
+ $(NM) -g --defined-only -P -p $< | sed 's/^\([^ ]*\).*/\1 read/' > $@
+endif
+
+und-read.lst: pre-read.o
+ echo 'read' > $@
+ $(NM) -u -P -p $< | cut -f1 -d' ' >> $@
+
+read_mod-commands_read.o: commands/read.c $(commands/read.c_DEPENDENCIES)
+ $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(read_mod_CFLAGS) -MD -c -o $@ $<
+-include read_mod-commands_read.d
+
+CLEANFILES += cmd-read_mod-commands_read.lst fs-read_mod-commands_read.lst partmap-read_mod-commands_read.lst
+COMMANDFILES += cmd-read_mod-commands_read.lst
+FSFILES += fs-read_mod-commands_read.lst
+PARTMAPFILES += partmap-read_mod-commands_read.lst
+
+cmd-read_mod-commands_read.lst: commands/read.c $(commands/read.c_DEPENDENCIES) gencmdlist.sh
+ set -e; $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(read_mod_CFLAGS) -E $< | sh $(srcdir)/gencmdlist.sh read > $@ || (rm -f $@; exit 1)
+
+fs-read_mod-commands_read.lst: commands/read.c $(commands/read.c_DEPENDENCIES) genfslist.sh
+ set -e; $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(read_mod_CFLAGS) -E $< | sh $(srcdir)/genfslist.sh read > $@ || (rm -f $@; exit 1)
+
+partmap-read_mod-commands_read.lst: commands/read.c $(commands/read.c_DEPENDENCIES) genpartmaplist.sh
+ set -e; $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(read_mod_CFLAGS) -E $< | sh $(srcdir)/genpartmaplist.sh read > $@ || (rm -f $@; exit 1)
+
+
+read_mod_CFLAGS = $(COMMON_CFLAGS)
+read_mod_LDFLAGS = $(COMMON_LDFLAGS)
+
+# For sleep.mod.
+sleep_mod_SOURCES = commands/sleep.c
+CLEANFILES += sleep.mod mod-sleep.o mod-sleep.c pre-sleep.o sleep_mod-commands_sleep.o und-sleep.lst
+ifneq ($(sleep_mod_EXPORTS),no)
+CLEANFILES += def-sleep.lst
+DEFSYMFILES += def-sleep.lst
+endif
+MOSTLYCLEANFILES += sleep_mod-commands_sleep.d
+UNDSYMFILES += und-sleep.lst
+
+sleep.mod: pre-sleep.o mod-sleep.o
+ -rm -f $@
+ $(TARGET_CC) $(sleep_mod_LDFLAGS) $(TARGET_LDFLAGS) -Wl,-r,-d -o $@ $^
+ $(STRIP) --strip-unneeded -K grub_mod_init -K grub_mod_fini -R .note -R .comment $@
+
+pre-sleep.o: $(sleep_mod_DEPENDENCIES) sleep_mod-commands_sleep.o
+ -rm -f $@
+ $(TARGET_CC) $(sleep_mod_LDFLAGS) $(TARGET_LDFLAGS) -Wl,-r,-d -o $@ sleep_mod-commands_sleep.o
+
+mod-sleep.o: mod-sleep.c
+ $(TARGET_CC) $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(sleep_mod_CFLAGS) -c -o $@ $<
+
+mod-sleep.c: moddep.lst genmodsrc.sh
+ sh $(srcdir)/genmodsrc.sh 'sleep' $< > $@ || (rm -f $@; exit 1)
+
+ifneq ($(sleep_mod_EXPORTS),no)
+def-sleep.lst: pre-sleep.o
+ $(NM) -g --defined-only -P -p $< | sed 's/^\([^ ]*\).*/\1 sleep/' > $@
+endif
+
+und-sleep.lst: pre-sleep.o
+ echo 'sleep' > $@
+ $(NM) -u -P -p $< | cut -f1 -d' ' >> $@
+
+sleep_mod-commands_sleep.o: commands/sleep.c $(commands/sleep.c_DEPENDENCIES)
+ $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(sleep_mod_CFLAGS) -MD -c -o $@ $<
+-include sleep_mod-commands_sleep.d
+
+CLEANFILES += cmd-sleep_mod-commands_sleep.lst fs-sleep_mod-commands_sleep.lst partmap-sleep_mod-commands_sleep.lst
+COMMANDFILES += cmd-sleep_mod-commands_sleep.lst
+FSFILES += fs-sleep_mod-commands_sleep.lst
+PARTMAPFILES += partmap-sleep_mod-commands_sleep.lst
+
+cmd-sleep_mod-commands_sleep.lst: commands/sleep.c $(commands/sleep.c_DEPENDENCIES) gencmdlist.sh
+ set -e; $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(sleep_mod_CFLAGS) -E $< | sh $(srcdir)/gencmdlist.sh sleep > $@ || (rm -f $@; exit 1)
+
+fs-sleep_mod-commands_sleep.lst: commands/sleep.c $(commands/sleep.c_DEPENDENCIES) genfslist.sh
+ set -e; $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(sleep_mod_CFLAGS) -E $< | sh $(srcdir)/genfslist.sh sleep > $@ || (rm -f $@; exit 1)
+
+partmap-sleep_mod-commands_sleep.lst: commands/sleep.c $(commands/sleep.c_DEPENDENCIES) genpartmaplist.sh
+ set -e; $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(sleep_mod_CFLAGS) -E $< | sh $(srcdir)/genpartmaplist.sh sleep > $@ || (rm -f $@; exit 1)
+
+
+sleep_mod_CFLAGS = $(COMMON_CFLAGS)
+sleep_mod_LDFLAGS = $(COMMON_LDFLAGS)
+
+# For loadenv.mod.
+loadenv_mod_SOURCES = commands/loadenv.c util/envblk.c
+CLEANFILES += loadenv.mod mod-loadenv.o mod-loadenv.c pre-loadenv.o loadenv_mod-commands_loadenv.o loadenv_mod-util_envblk.o und-loadenv.lst
+ifneq ($(loadenv_mod_EXPORTS),no)
+CLEANFILES += def-loadenv.lst
+DEFSYMFILES += def-loadenv.lst
+endif
+MOSTLYCLEANFILES += loadenv_mod-commands_loadenv.d loadenv_mod-util_envblk.d
+UNDSYMFILES += und-loadenv.lst
+
+loadenv.mod: pre-loadenv.o mod-loadenv.o
+ -rm -f $@
+ $(TARGET_CC) $(loadenv_mod_LDFLAGS) $(TARGET_LDFLAGS) -Wl,-r,-d -o $@ $^
+ $(STRIP) --strip-unneeded -K grub_mod_init -K grub_mod_fini -R .note -R .comment $@
+
+pre-loadenv.o: $(loadenv_mod_DEPENDENCIES) loadenv_mod-commands_loadenv.o loadenv_mod-util_envblk.o
+ -rm -f $@
+ $(TARGET_CC) $(loadenv_mod_LDFLAGS) $(TARGET_LDFLAGS) -Wl,-r,-d -o $@ loadenv_mod-commands_loadenv.o loadenv_mod-util_envblk.o
+
+mod-loadenv.o: mod-loadenv.c
+ $(TARGET_CC) $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(loadenv_mod_CFLAGS) -c -o $@ $<
+
+mod-loadenv.c: moddep.lst genmodsrc.sh
+ sh $(srcdir)/genmodsrc.sh 'loadenv' $< > $@ || (rm -f $@; exit 1)
+
+ifneq ($(loadenv_mod_EXPORTS),no)
+def-loadenv.lst: pre-loadenv.o
+ $(NM) -g --defined-only -P -p $< | sed 's/^\([^ ]*\).*/\1 loadenv/' > $@
+endif
+
+und-loadenv.lst: pre-loadenv.o
+ echo 'loadenv' > $@
+ $(NM) -u -P -p $< | cut -f1 -d' ' >> $@
+
+loadenv_mod-commands_loadenv.o: commands/loadenv.c $(commands/loadenv.c_DEPENDENCIES)
+ $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(loadenv_mod_CFLAGS) -MD -c -o $@ $<
+-include loadenv_mod-commands_loadenv.d
+
+CLEANFILES += cmd-loadenv_mod-commands_loadenv.lst fs-loadenv_mod-commands_loadenv.lst partmap-loadenv_mod-commands_loadenv.lst
+COMMANDFILES += cmd-loadenv_mod-commands_loadenv.lst
+FSFILES += fs-loadenv_mod-commands_loadenv.lst
+PARTMAPFILES += partmap-loadenv_mod-commands_loadenv.lst
+
+cmd-loadenv_mod-commands_loadenv.lst: commands/loadenv.c $(commands/loadenv.c_DEPENDENCIES) gencmdlist.sh
+ set -e; $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(loadenv_mod_CFLAGS) -E $< | sh $(srcdir)/gencmdlist.sh loadenv > $@ || (rm -f $@; exit 1)
+
+fs-loadenv_mod-commands_loadenv.lst: commands/loadenv.c $(commands/loadenv.c_DEPENDENCIES) genfslist.sh
+ set -e; $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(loadenv_mod_CFLAGS) -E $< | sh $(srcdir)/genfslist.sh loadenv > $@ || (rm -f $@; exit 1)
+
+partmap-loadenv_mod-commands_loadenv.lst: commands/loadenv.c $(commands/loadenv.c_DEPENDENCIES) genpartmaplist.sh
+ set -e; $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(loadenv_mod_CFLAGS) -E $< | sh $(srcdir)/genpartmaplist.sh loadenv > $@ || (rm -f $@; exit 1)
+
+
+loadenv_mod-util_envblk.o: util/envblk.c $(util/envblk.c_DEPENDENCIES)
+ $(TARGET_CC) -Iutil -I$(srcdir)/util $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(loadenv_mod_CFLAGS) -MD -c -o $@ $<
+-include loadenv_mod-util_envblk.d
+
+CLEANFILES += cmd-loadenv_mod-util_envblk.lst fs-loadenv_mod-util_envblk.lst partmap-loadenv_mod-util_envblk.lst
+COMMANDFILES += cmd-loadenv_mod-util_envblk.lst
+FSFILES += fs-loadenv_mod-util_envblk.lst
+PARTMAPFILES += partmap-loadenv_mod-util_envblk.lst
+
+cmd-loadenv_mod-util_envblk.lst: util/envblk.c $(util/envblk.c_DEPENDENCIES) gencmdlist.sh
+ set -e; $(TARGET_CC) -Iutil -I$(srcdir)/util $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(loadenv_mod_CFLAGS) -E $< | sh $(srcdir)/gencmdlist.sh loadenv > $@ || (rm -f $@; exit 1)
+
+fs-loadenv_mod-util_envblk.lst: util/envblk.c $(util/envblk.c_DEPENDENCIES) genfslist.sh
+ set -e; $(TARGET_CC) -Iutil -I$(srcdir)/util $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(loadenv_mod_CFLAGS) -E $< | sh $(srcdir)/genfslist.sh loadenv > $@ || (rm -f $@; exit 1)
+
+partmap-loadenv_mod-util_envblk.lst: util/envblk.c $(util/envblk.c_DEPENDENCIES) genpartmaplist.sh
+ set -e; $(TARGET_CC) -Iutil -I$(srcdir)/util $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(loadenv_mod_CFLAGS) -E $< | sh $(srcdir)/genpartmaplist.sh loadenv > $@ || (rm -f $@; exit 1)
+
+
+loadenv_mod_CFLAGS = $(COMMON_CFLAGS)
+loadenv_mod_LDFLAGS = $(COMMON_LDFLAGS)
+
# Misc.
pkglib_MODULES += gzio.mod elf.mod
gzio_mod_CFLAGS = $(COMMON_CFLAGS)
gzio_mod_LDFLAGS = $(COMMON_LDFLAGS)
-
-# For read.mod.
-read_mod_SOURCES = commands/read.c
-CLEANFILES += read.mod mod-read.o mod-read.c pre-read.o read_mod-commands_read.o und-read.lst
-ifneq ($(read_mod_EXPORTS),no)
-CLEANFILES += def-read.lst
-DEFSYMFILES += def-read.lst
-endif
-MOSTLYCLEANFILES += read_mod-commands_read.d
-UNDSYMFILES += und-read.lst
-
-read.mod: pre-read.o mod-read.o
- -rm -f $@
- $(TARGET_CC) $(read_mod_LDFLAGS) $(TARGET_LDFLAGS) -Wl,-r,-d -o $@ $^
- $(STRIP) --strip-unneeded -K grub_mod_init -K grub_mod_fini -R .note -R .comment $@
-
-pre-read.o: $(read_mod_DEPENDENCIES) read_mod-commands_read.o
- -rm -f $@
- $(TARGET_CC) $(read_mod_LDFLAGS) $(TARGET_LDFLAGS) -Wl,-r,-d -o $@ read_mod-commands_read.o
-
-mod-read.o: mod-read.c
- $(TARGET_CC) $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(read_mod_CFLAGS) -c -o $@ $<
-
-mod-read.c: moddep.lst genmodsrc.sh
- sh $(srcdir)/genmodsrc.sh 'read' $< > $@ || (rm -f $@; exit 1)
-
-ifneq ($(read_mod_EXPORTS),no)
-def-read.lst: pre-read.o
- $(NM) -g --defined-only -P -p $< | sed 's/^\([^ ]*\).*/\1 read/' > $@
-endif
-
-und-read.lst: pre-read.o
- echo 'read' > $@
- $(NM) -u -P -p $< | cut -f1 -d' ' >> $@
-
-read_mod-commands_read.o: commands/read.c $(commands/read.c_DEPENDENCIES)
- $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(read_mod_CFLAGS) -MD -c -o $@ $<
--include read_mod-commands_read.d
-
-CLEANFILES += cmd-read_mod-commands_read.lst fs-read_mod-commands_read.lst partmap-read_mod-commands_read.lst
-COMMANDFILES += cmd-read_mod-commands_read.lst
-FSFILES += fs-read_mod-commands_read.lst
-PARTMAPFILES += partmap-read_mod-commands_read.lst
-
-cmd-read_mod-commands_read.lst: commands/read.c $(commands/read.c_DEPENDENCIES) gencmdlist.sh
- set -e; $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(read_mod_CFLAGS) -E $< | sh $(srcdir)/gencmdlist.sh read > $@ || (rm -f $@; exit 1)
-
-fs-read_mod-commands_read.lst: commands/read.c $(commands/read.c_DEPENDENCIES) genfslist.sh
- set -e; $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(read_mod_CFLAGS) -E $< | sh $(srcdir)/genfslist.sh read > $@ || (rm -f $@; exit 1)
-
-partmap-read_mod-commands_read.lst: commands/read.c $(commands/read.c_DEPENDENCIES) genpartmaplist.sh
- set -e; $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(read_mod_CFLAGS) -E $< | sh $(srcdir)/genpartmaplist.sh read > $@ || (rm -f $@; exit 1)
-
-
-read_mod_CFLAGS = $(COMMON_CFLAGS)
-read_mod_LDFLAGS = $(COMMON_LDFLAGS)
-
-# For sleep.mod.
-sleep_mod_SOURCES = commands/sleep.c
-CLEANFILES += sleep.mod mod-sleep.o mod-sleep.c pre-sleep.o sleep_mod-commands_sleep.o und-sleep.lst
-ifneq ($(sleep_mod_EXPORTS),no)
-CLEANFILES += def-sleep.lst
-DEFSYMFILES += def-sleep.lst
-endif
-MOSTLYCLEANFILES += sleep_mod-commands_sleep.d
-UNDSYMFILES += und-sleep.lst
-
-sleep.mod: pre-sleep.o mod-sleep.o
- -rm -f $@
- $(TARGET_CC) $(sleep_mod_LDFLAGS) $(TARGET_LDFLAGS) -Wl,-r,-d -o $@ $^
- $(STRIP) --strip-unneeded -K grub_mod_init -K grub_mod_fini -R .note -R .comment $@
-
-pre-sleep.o: $(sleep_mod_DEPENDENCIES) sleep_mod-commands_sleep.o
- -rm -f $@
- $(TARGET_CC) $(sleep_mod_LDFLAGS) $(TARGET_LDFLAGS) -Wl,-r,-d -o $@ sleep_mod-commands_sleep.o
-
-mod-sleep.o: mod-sleep.c
- $(TARGET_CC) $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(sleep_mod_CFLAGS) -c -o $@ $<
-
-mod-sleep.c: moddep.lst genmodsrc.sh
- sh $(srcdir)/genmodsrc.sh 'sleep' $< > $@ || (rm -f $@; exit 1)
-
-ifneq ($(sleep_mod_EXPORTS),no)
-def-sleep.lst: pre-sleep.o
- $(NM) -g --defined-only -P -p $< | sed 's/^\([^ ]*\).*/\1 sleep/' > $@
-endif
-
-und-sleep.lst: pre-sleep.o
- echo 'sleep' > $@
- $(NM) -u -P -p $< | cut -f1 -d' ' >> $@
-
-sleep_mod-commands_sleep.o: commands/sleep.c $(commands/sleep.c_DEPENDENCIES)
- $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(sleep_mod_CFLAGS) -MD -c -o $@ $<
--include sleep_mod-commands_sleep.d
-
-CLEANFILES += cmd-sleep_mod-commands_sleep.lst fs-sleep_mod-commands_sleep.lst partmap-sleep_mod-commands_sleep.lst
-COMMANDFILES += cmd-sleep_mod-commands_sleep.lst
-FSFILES += fs-sleep_mod-commands_sleep.lst
-PARTMAPFILES += partmap-sleep_mod-commands_sleep.lst
-
-cmd-sleep_mod-commands_sleep.lst: commands/sleep.c $(commands/sleep.c_DEPENDENCIES) gencmdlist.sh
- set -e; $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(sleep_mod_CFLAGS) -E $< | sh $(srcdir)/gencmdlist.sh sleep > $@ || (rm -f $@; exit 1)
-
-fs-sleep_mod-commands_sleep.lst: commands/sleep.c $(commands/sleep.c_DEPENDENCIES) genfslist.sh
- set -e; $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(sleep_mod_CFLAGS) -E $< | sh $(srcdir)/genfslist.sh sleep > $@ || (rm -f $@; exit 1)
-
-partmap-sleep_mod-commands_sleep.lst: commands/sleep.c $(commands/sleep.c_DEPENDENCIES) genpartmaplist.sh
- set -e; $(TARGET_CC) -Icommands -I$(srcdir)/commands $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(sleep_mod_CFLAGS) -E $< | sh $(srcdir)/genpartmaplist.sh sleep > $@ || (rm -f $@; exit 1)
-
-
-sleep_mod_CFLAGS = $(COMMON_CFLAGS)
-sleep_mod_LDFLAGS = $(COMMON_LDFLAGS)
rm -f $@; sh $(srcdir)/geninit.sh $< $(filter %.c,$^) > $@
DISTCLEANFILES += grub_fstest_init.c
+# for grub-editenv
+bin_UTILITIES += grub-editenv
+grub_editenv_SOURCES = util/grub-editenv.c util/envblk.c util/misc.c kern/misc.c kern/err.c
+CLEANFILES += grub-editenv
+
# For update-grub
update-grub: util/update-grub.in config.status
./config.status --file=$@:$<
cmp.mod cat.mod help.mod font.mod search.mod \
loopback.mod fs_uuid.mod configfile.mod echo.mod \
terminfo.mod test.mod blocklist.mod hexdump.mod \
- read.mod sleep.mod
+ read.mod sleep.mod loadenv.mod
# For hello.mod.
hello_mod_SOURCES = hello/hello.c
hexdump_mod_CFLAGS = $(COMMON_CFLAGS)
hexdump_mod_LDFLAGS = $(COMMON_LDFLAGS)
+# For read.mod.
+read_mod_SOURCES = commands/read.c
+read_mod_CFLAGS = $(COMMON_CFLAGS)
+read_mod_LDFLAGS = $(COMMON_LDFLAGS)
+
+# For sleep.mod.
+sleep_mod_SOURCES = commands/sleep.c
+sleep_mod_CFLAGS = $(COMMON_CFLAGS)
+sleep_mod_LDFLAGS = $(COMMON_LDFLAGS)
+
+# For loadenv.mod.
+loadenv_mod_SOURCES = commands/loadenv.c util/envblk.c
+loadenv_mod_CFLAGS = $(COMMON_CFLAGS)
+loadenv_mod_LDFLAGS = $(COMMON_LDFLAGS)
+
# Misc.
pkglib_MODULES += gzio.mod elf.mod
gzio_mod_SOURCES = io/gzio.c
gzio_mod_CFLAGS = $(COMMON_CFLAGS)
gzio_mod_LDFLAGS = $(COMMON_LDFLAGS)
-
-# For read.mod.
-read_mod_SOURCES = commands/read.c
-read_mod_CFLAGS = $(COMMON_CFLAGS)
-read_mod_LDFLAGS = $(COMMON_LDFLAGS)
-
-# For sleep.mod.
-sleep_mod_SOURCES = commands/sleep.c
-sleep_mod_CFLAGS = $(COMMON_CFLAGS)
-sleep_mod_LDFLAGS = $(COMMON_LDFLAGS)
--- /dev/null
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2008 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_ENVBLK_HEADER
+#define GRUB_ENVBLK_HEADER 1
+
+#define GRUB_ENVBLK_SIGNATURE 0x764e6547 /* GeNv */
+
+#define GRUB_ENVBLK_MAXLEN 8192
+
+#define GRUB_ENVBLK_DEFCFG "grubenv"
+
+#ifndef ASM_FILE
+
+struct grub_envblk
+{
+ grub_uint32_t signature;
+ grub_uint16_t length;
+ char data[0];
+} __attribute__ ((packed));
+typedef struct grub_envblk *grub_envblk_t;
+
+grub_envblk_t grub_envblk_find (char *buf);
+int grub_envblk_insert (grub_envblk_t envblk, char *name, char *value);
+void grub_envblk_delete (grub_envblk_t envblk, char *name);
+void grub_envblk_iterate (grub_envblk_t envblk, int hook (char *name, char *value));
+
+#endif
+
+#endif /* ! GRUB_ENVBLK_HEADER */
--- /dev/null
+/* envblk.c - Common function for environment block. */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2008 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <grub/types.h>
+#include <grub/envblk.h>
+#include <grub/misc.h>
+
+grub_envblk_t
+grub_envblk_find (char *buf)
+{
+ grub_uint32_t *pd;
+ int len;
+
+ pd = (grub_uint32_t *) buf;
+
+ for (len = GRUB_ENVBLK_MAXLEN - 6; len > 0; len -= 4, pd++)
+ if (*pd == GRUB_ENVBLK_SIGNATURE)
+ {
+ grub_envblk_t p;
+
+ p = (grub_envblk_t) pd;
+ if (p->length <= len)
+ return p;
+ }
+
+ return 0;
+}
+
+int
+grub_envblk_insert (grub_envblk_t envblk, char *name, char *value)
+{
+ char *p, *pend;
+ char *found = 0;
+ int nl;
+
+ nl = grub_strlen (name);
+ p = envblk->data;
+ pend = p + envblk->length;
+
+ while (*p)
+ {
+ if ((! found) && (! grub_memcmp (name, p, nl)) && (p[nl] == '='))
+ found = p + nl + 1;
+
+ p += grub_strlen (p) + 1;
+ if (p >= pend)
+ return 1;
+ }
+
+ if (found)
+ {
+ int len1, len2;
+
+ len1 = grub_strlen (found);
+ len2 = grub_strlen (value);
+ if ((p - envblk->data) + 1 - len1 + len2 > envblk->length)
+ return 1;
+
+ grub_memcpy (found + len2 + 1, found + len1 + 1, (p - found) - len1);
+ grub_strcpy (found, value);
+ }
+ else
+ {
+ int len2 = grub_strlen (value);
+
+ if ((p - envblk->data) + nl + 1 + len2 + 2 > envblk->length)
+ return 1;
+
+ grub_strcpy (p, name);
+ p[nl] = '=';
+ grub_strcpy (p + nl + 1, value);
+ p[nl + 1 + len2 + 1] = 0;
+ }
+
+ return 0;
+}
+
+void
+grub_envblk_delete (grub_envblk_t envblk, char *name)
+{
+ char *p, *pend;
+ char *found = 0;
+ int nl;
+
+ nl = grub_strlen (name);
+ p = envblk->data;
+ pend = p + envblk->length;
+
+ while (*p)
+ {
+ if ((! found) && (! grub_memcmp (name, p, nl)) && (p[nl] == '='))
+ found = p;
+
+ p += grub_strlen (p) + 1;
+ if (p >= pend)
+ return;
+ }
+
+ if (found)
+ {
+ int len;
+
+ len = grub_strlen (found);
+ grub_memcpy (found, found + len + 1, (p - found) - len);
+ }
+}
+
+void
+grub_envblk_iterate (grub_envblk_t envblk,
+ int hook (char *name, char *value))
+{
+ char *p, *pend;
+
+ p = envblk->data;
+ pend = p + envblk->length;
+
+ while (*p)
+ {
+ char *v;
+ int r;
+
+ v = grub_strchr (p, '=');
+ if (v)
+ {
+ *v = 0;
+ r = hook (p, v + 1);
+ *v = '=';
+ }
+ else
+ r = hook (p, "");
+
+ if (r)
+ break;
+
+ p += grub_strlen (p) + 1;
+ if (p >= pend)
+ break;
+ }
+}
--- /dev/null
+/* grub-editenv.c - tool to edit environment block. */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2008 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <grub/types.h>
+#include <grub/util/misc.h>
+
+#include <grub/envblk.h>
+
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+
+void
+grub_putchar (int c)
+{
+ putchar (c);
+}
+
+void
+grub_refresh (void)
+{
+ fflush (stdout);
+}
+
+void *
+grub_term_get_current (void)
+{
+ return 0;
+}
+
+int
+grub_getkey (void)
+{
+ return 0;
+}
+
+char *
+grub_env_get (const char *name __attribute__ ((unused)))
+{
+ return NULL;
+}
+
+static struct option options[] = {
+ {"help", no_argument, 0, 'h'},
+ {"version", no_argument, 0, 'V'},
+ {"verbose", no_argument, 0, 'v'},
+ {0, 0, 0, 0}
+};
+
+char buffer[GRUB_ENVBLK_MAXLEN];
+grub_envblk_t envblk;
+
+static void
+usage (int status)
+{
+ if (status)
+ fprintf (stderr, "Try ``grub-editenv --help'' for more information.\n");
+ else
+ printf ("\
+Usage: grub-editenv [OPTIONS] FILENAME COMMAND\n\
+\n\
+Tool to edit environment block.\n\
+\nCommands:\n\
+ create create a blank environment block file\n\
+ info show information about the environment block\n\
+ list list the current variables\n\
+ set [name=value] ... change/delete variables\n\
+ clear delete all variables\n\
+\nOptions:\n\
+ -h, --help display this message and exit\n\
+ -V, --version print version information and exit\n\
+ -v, --verbose print verbose messages\n\
+\n\
+Report bugs to <%s>.\n", PACKAGE_BUGREPORT);
+
+ exit (status);
+}
+
+int
+create_envblk_file (char *name)
+{
+ FILE *f;
+ grub_envblk_t p;
+
+ f = fopen (name, "wb");
+ if (! f)
+ return 1;
+
+ /* Just in case OS don't save 0s. */
+ memset (buffer, -1, sizeof (buffer));
+
+ p = (grub_envblk_t) &buffer[0];
+ p->signature = GRUB_ENVBLK_SIGNATURE;
+ p->length = sizeof (buffer) - sizeof (struct grub_envblk);
+ p->data[0] = p->data[1] = 0;
+
+ fwrite (buffer, sizeof (buffer), 1, f);
+
+ fclose (f);
+ return 0;
+}
+
+FILE *
+open_envblk_file (char *name)
+{
+ FILE *f;
+
+ f = fopen (name, "r+b");
+ if (! f)
+ grub_util_error ("Can\'t open file %s", name);
+
+ if (fread (buffer, 1, sizeof (buffer), f) != sizeof (buffer))
+ grub_util_error ("The envblk file is too short");
+
+ envblk = grub_envblk_find (buffer);
+ if (! envblk)
+ grub_util_error ("Can\'t find environment block");
+
+ return f;
+}
+
+static void
+cmd_info (void)
+{
+ printf ("Envblk offset: %d\n", envblk->data - buffer);
+ printf ("Envblk length: %d\n", envblk->length);
+}
+
+static void
+cmd_list (void)
+{
+ auto int hook (char *name, char *value);
+ int hook (char *name, char *value)
+ {
+ printf ("%s=%s\n", name, value);
+ return 0;
+ }
+
+ grub_envblk_iterate (envblk, hook);
+}
+
+static void
+cmd_set (int argc, char *argv[])
+{
+ while (argc)
+ {
+ char *p;
+
+ p = strchr (argv[0], '=');
+ if (! p)
+ grub_util_error ("Invalid parameter");
+
+ *(p++) = 0;
+
+ if (*p)
+ {
+ if (grub_envblk_insert (envblk, argv[0], p))
+ grub_util_error ("Environment block too small");
+ }
+ else
+ grub_envblk_delete (envblk, argv[0]);
+
+ argc--;
+ argv++;
+ }
+}
+
+static void
+cmd_clear (void)
+{
+ envblk->data[0] = envblk->data[1] = 0;
+}
+
+int
+main (int argc, char *argv[])
+{
+ FILE *f;
+
+ progname = "grub-editenv";
+
+ /* Check for options. */
+ while (1)
+ {
+ int c = getopt_long (argc, argv, "hVv", options, 0);
+
+ if (c == -1)
+ break;
+ else
+ switch (c)
+ {
+ case 'h':
+ usage (0);
+ break;
+
+ case 'V':
+ printf ("%s (%s) %s\n", progname, PACKAGE_NAME, PACKAGE_VERSION);
+ return 0;
+
+ case 'v':
+ verbosity++;
+ break;
+
+ default:
+ usage (1);
+ break;
+ }
+ }
+
+ /* Obtain PATH. */
+ if (optind + 1 >= argc)
+ {
+ fprintf (stderr, "Not enough parameter.\n");
+ usage (1);
+ }
+
+ if (! strcmp (argv[optind + 1], "create"))
+ return create_envblk_file (argv[optind]);
+
+ f = open_envblk_file (argv[optind]);
+
+ optind++;
+ if (! strcmp (argv[optind], "info"))
+ cmd_info ();
+ else if (! strcmp (argv[optind], "list"))
+ cmd_list ();
+ else
+ {
+ if (! strcmp (argv[optind], "set"))
+ cmd_set (argc - optind - 1, argv + optind + 1);
+ else if (! strcmp (argv[optind], "clear"))
+ cmd_clear ();
+
+ fseek (f, 0, SEEK_SET);
+ fwrite (buffer, sizeof (buffer), 1, f);
+ }
+ fclose (f);
+
+ return 0;
+}
projects / thirdparty / grub.git / commitdiff
