instructions:
$ configure && make
-$ ./pupa-mkimage -v -d . -o core.img chain fat
+$ ./pupa-mkimage -v -d . -o core.img _chain ext2
$ dd if=boot.img of=/dev/fd0 bs=512 count=1
$ dd if=core.img of=/dev/fd0 bs=512 seek=1
higher priority.
-* Add more filesystems (such as ext2fs, ffs, and reiserfs). !
+* Add more filesystems (such as jfs, ffs, and reiserfs). !
+
+* Add journal playback support to ext2fs (so it will become ext3fs).
* Add support for internationalization. !!!
# For pupa-setup.
pupa_setup_SOURCES = util/i386/pc/pupa-setup.c util/i386/pc/biosdisk.c \
util/misc.c kern/device.c kern/disk.c kern/file.c kern/fs.c \
- kern/err.c kern/misc.c disk/i386/pc/partition.c fs/fat.c
-CLEANFILES += pupa-setup pupa_setup-util_i386_pc_pupa_setup.o pupa_setup-util_i386_pc_biosdisk.o pupa_setup-util_misc.o pupa_setup-kern_device.o pupa_setup-kern_disk.o pupa_setup-kern_file.o pupa_setup-kern_fs.o pupa_setup-kern_err.o pupa_setup-kern_misc.o pupa_setup-disk_i386_pc_partition.o pupa_setup-fs_fat.o
-MOSTLYCLEANFILES += pupa_setup-util_i386_pc_pupa_setup.d pupa_setup-util_i386_pc_biosdisk.d pupa_setup-util_misc.d pupa_setup-kern_device.d pupa_setup-kern_disk.d pupa_setup-kern_file.d pupa_setup-kern_fs.d pupa_setup-kern_err.d pupa_setup-kern_misc.d pupa_setup-disk_i386_pc_partition.d pupa_setup-fs_fat.d
+ kern/err.c kern/misc.c disk/i386/pc/partition.c fs/fat.c fs/ext2.c
+CLEANFILES += pupa-setup pupa_setup-util_i386_pc_pupa_setup.o pupa_setup-util_i386_pc_biosdisk.o pupa_setup-util_misc.o pupa_setup-kern_device.o pupa_setup-kern_disk.o pupa_setup-kern_file.o pupa_setup-kern_fs.o pupa_setup-kern_err.o pupa_setup-kern_misc.o pupa_setup-disk_i386_pc_partition.o pupa_setup-fs_fat.o pupa_setup-fs_ext2.o
+MOSTLYCLEANFILES += pupa_setup-util_i386_pc_pupa_setup.d pupa_setup-util_i386_pc_biosdisk.d pupa_setup-util_misc.d pupa_setup-kern_device.d pupa_setup-kern_disk.d pupa_setup-kern_file.d pupa_setup-kern_fs.d pupa_setup-kern_err.d pupa_setup-kern_misc.d pupa_setup-disk_i386_pc_partition.d pupa_setup-fs_fat.d pupa_setup-fs_ext2.d
-pupa-setup: pupa_setup-util_i386_pc_pupa_setup.o pupa_setup-util_i386_pc_biosdisk.o pupa_setup-util_misc.o pupa_setup-kern_device.o pupa_setup-kern_disk.o pupa_setup-kern_file.o pupa_setup-kern_fs.o pupa_setup-kern_err.o pupa_setup-kern_misc.o pupa_setup-disk_i386_pc_partition.o pupa_setup-fs_fat.o
+pupa-setup: pupa_setup-util_i386_pc_pupa_setup.o pupa_setup-util_i386_pc_biosdisk.o pupa_setup-util_misc.o pupa_setup-kern_device.o pupa_setup-kern_disk.o pupa_setup-kern_file.o pupa_setup-kern_fs.o pupa_setup-kern_err.o pupa_setup-kern_misc.o pupa_setup-disk_i386_pc_partition.o pupa_setup-fs_fat.o pupa_setup-fs_ext2.o
$(BUILD_CC) -o $@ $^ $(BUILD_LDFLAGS) $(pupa_setup_LDFLAGS)
pupa_setup-util_i386_pc_pupa_setup.o: util/i386/pc/pupa-setup.c
-include pupa_setup-fs_fat.d
+pupa_setup-fs_ext2.o: fs/ext2.c
+ $(BUILD_CC) -Ifs -I$(srcdir)/fs $(BUILD_CPPFLAGS) $(BUILD_CFLAGS) -DPUPA_UTIL=1 $(pupa_setup_CFLAGS) -c -o $@ $<
+
+pupa_setup-fs_ext2.d: fs/ext2.c
+ set -e; $(BUILD_CC) -Ifs -I$(srcdir)/fs $(BUILD_CPPFLAGS) $(BUILD_CFLAGS) -DPUPA_UTIL=1 $(pupa_setup_CFLAGS) -M $< | sed 's,ext2\.o[ :]*,pupa_setup-fs_ext2.o $@ : ,g' > $@; [ -s $@ ] || rm -f $@
+
+-include pupa_setup-fs_ext2.d
+
# For genmoddep.
genmoddep_SOURCES = util/genmoddep.c
# Modules.
-pkgdata_MODULES = _chain.mod _linux.mod fat.mod normal.mod hello.mod \
+pkgdata_MODULES = _chain.mod _linux.mod fat.mod ext2.mod normal.mod hello.mod \
vga.mod font.mod
# For _chain.mod.
fat_mod_CFLAGS = $(COMMON_CFLAGS)
+# For ext2.mod.
+ext2_mod_SOURCES = fs/ext2.c
+CLEANFILES += ext2.mod mod-ext2.o mod-ext2.c pre-ext2.o ext2_mod-fs_ext2.o def-ext2.lst und-ext2.lst
+MOSTLYCLEANFILES += ext2_mod-fs_ext2.d
+DEFSYMFILES += def-ext2.lst
+UNDSYMFILES += und-ext2.lst
+
+ext2.mod: pre-ext2.o mod-ext2.o
+ -rm -f $@
+ $(LD) -r -o $@ $^
+ $(STRIP) --strip-unneeded -K pupa_mod_init -K pupa_mod_fini -R .note -R .comment $@
+
+pre-ext2.o: ext2_mod-fs_ext2.o
+ -rm -f $@
+ $(LD) -r -o $@ $^
+
+mod-ext2.o: mod-ext2.c
+ $(CC) $(CPPFLAGS) $(CFLAGS) $(ext2_mod_CFLAGS) -c -o $@ $<
+
+mod-ext2.c: moddep.lst genmodsrc.sh
+ sh $(srcdir)/genmodsrc.sh 'ext2' $< > $@ || (rm -f $@; exit 1)
+
+def-ext2.lst: pre-ext2.o
+ $(NM) -g --defined-only -P -p $< | sed 's/^\([^ ]*\).*/\1 ext2/' > $@
+
+und-ext2.lst: pre-ext2.o
+ echo 'ext2' > $@
+ $(NM) -u -P -p $< | cut -f1 -d' ' >> $@
+
+ext2_mod-fs_ext2.o: fs/ext2.c
+ $(CC) -Ifs -I$(srcdir)/fs $(CPPFLAGS) $(CFLAGS) $(ext2_mod_CFLAGS) -c -o $@ $<
+
+ext2_mod-fs_ext2.d: fs/ext2.c
+ set -e; $(CC) -Ifs -I$(srcdir)/fs $(CPPFLAGS) $(CFLAGS) $(ext2_mod_CFLAGS) -M $< | sed 's,ext2\.o[ :]*,ext2_mod-fs_ext2.o $@ : ,g' > $@; [ -s $@ ] || rm -f $@
+
+-include ext2_mod-fs_ext2.d
+
+ext2_mod_CFLAGS = $(COMMON_CFLAGS)
+
# For _linux.mod.
_linux_mod_SOURCES = loader/i386/pc/linux.c
CLEANFILES += _linux.mod mod-_linux.o mod-_linux.c pre-_linux.o _linux_mod-loader_i386_pc_linux.o def-_linux.lst und-_linux.lst
# For pupa-setup.
pupa_setup_SOURCES = util/i386/pc/pupa-setup.c util/i386/pc/biosdisk.c \
util/misc.c kern/device.c kern/disk.c kern/file.c kern/fs.c \
- kern/err.c kern/misc.c disk/i386/pc/partition.c fs/fat.c
+ kern/err.c kern/misc.c disk/i386/pc/partition.c fs/fat.c fs/ext2.c
# For genmoddep.
genmoddep_SOURCES = util/genmoddep.c
# Modules.
-pkgdata_MODULES = _chain.mod _linux.mod fat.mod normal.mod hello.mod \
+pkgdata_MODULES = _chain.mod _linux.mod fat.mod ext2.mod normal.mod hello.mod \
vga.mod font.mod
# For _chain.mod.
fat_mod_SOURCES = fs/fat.c
fat_mod_CFLAGS = $(COMMON_CFLAGS)
+# For ext2.mod.
+ext2_mod_SOURCES = fs/ext2.c
+ext2_mod_CFLAGS = $(COMMON_CFLAGS)
+
# For _linux.mod.
_linux_mod_SOURCES = loader/i386/pc/linux.c
_linux_mod_CFLAGS = $(COMMON_CFLAGS)
/* Define to 1 if your processor stores words with the most significant byte
first (like Motorola and SPARC, unlike Intel and VAX). */
#undef WORDS_BIGENDIAN
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#undef _FILE_OFFSET_BITS
+
+/* Define for large files, on AIX-style hosts. */
+#undef _LARGE_FILES
esac
cat <<\_ACEOF
+Optional Features:
+ --disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no)
+ --enable-FEATURE[=ARG] include FEATURE [ARG=yes]
+ --disable-largefile omit support for large files
+
Some influential environment variables:
CC C compiler command
CFLAGS C compiler flags
ac_compiler_gnu=$ac_cv_c_compiler_gnu
+# Check whether --enable-largefile or --disable-largefile was given.
+if test "${enable_largefile+set}" = set; then
+ enableval="$enable_largefile"
+
+fi;
+if test "$enable_largefile" != no; then
+
+ echo "$as_me:$LINENO: checking for special C compiler options needed for large files" >&5
+echo $ECHO_N "checking for special C compiler options needed for large files... $ECHO_C" >&6
+if test "${ac_cv_sys_largefile_CC+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+ ac_cv_sys_largefile_CC=no
+ if test "$GCC" != yes; then
+ ac_save_CC=$CC
+ while :; do
+ # IRIX 6.2 and later do not support large files by default,
+ # so use the C compiler's -n32 option if that helps.
+ cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+ We can't simply define LARGE_OFF_T to be 9223372036854775807,
+ since some C++ compilers masquerading as C compilers
+ incorrectly reject 9223372036854775807. */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+ int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+ && LARGE_OFF_T % 2147483647 == 1)
+ ? 1 : -1];
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+ rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -s conftest.$ac_objext'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ break
+else
+ echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.$ac_objext
+ CC="$CC -n32"
+ rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -s conftest.$ac_objext'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ ac_cv_sys_largefile_CC=' -n32'; break
+else
+ echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.$ac_objext
+ break
+ done
+ CC=$ac_save_CC
+ rm -f conftest.$ac_ext
+ fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_sys_largefile_CC" >&5
+echo "${ECHO_T}$ac_cv_sys_largefile_CC" >&6
+ if test "$ac_cv_sys_largefile_CC" != no; then
+ CC=$CC$ac_cv_sys_largefile_CC
+ fi
+
+ echo "$as_me:$LINENO: checking for _FILE_OFFSET_BITS value needed for large files" >&5
+echo $ECHO_N "checking for _FILE_OFFSET_BITS value needed for large files... $ECHO_C" >&6
+if test "${ac_cv_sys_file_offset_bits+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+ while :; do
+ ac_cv_sys_file_offset_bits=no
+ cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+ We can't simply define LARGE_OFF_T to be 9223372036854775807,
+ since some C++ compilers masquerading as C compilers
+ incorrectly reject 9223372036854775807. */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+ int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+ && LARGE_OFF_T % 2147483647 == 1)
+ ? 1 : -1];
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -s conftest.$ac_objext'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ break
+else
+ echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+ cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+#define _FILE_OFFSET_BITS 64
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+ We can't simply define LARGE_OFF_T to be 9223372036854775807,
+ since some C++ compilers masquerading as C compilers
+ incorrectly reject 9223372036854775807. */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+ int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+ && LARGE_OFF_T % 2147483647 == 1)
+ ? 1 : -1];
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -s conftest.$ac_objext'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ ac_cv_sys_file_offset_bits=64; break
+else
+ echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+ break
+done
+fi
+echo "$as_me:$LINENO: result: $ac_cv_sys_file_offset_bits" >&5
+echo "${ECHO_T}$ac_cv_sys_file_offset_bits" >&6
+if test "$ac_cv_sys_file_offset_bits" != no; then
+
+cat >>confdefs.h <<_ACEOF
+#define _FILE_OFFSET_BITS $ac_cv_sys_file_offset_bits
+_ACEOF
+
+fi
+rm -f conftest*
+ echo "$as_me:$LINENO: checking for _LARGE_FILES value needed for large files" >&5
+echo $ECHO_N "checking for _LARGE_FILES value needed for large files... $ECHO_C" >&6
+if test "${ac_cv_sys_large_files+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+ while :; do
+ ac_cv_sys_large_files=no
+ cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+ We can't simply define LARGE_OFF_T to be 9223372036854775807,
+ since some C++ compilers masquerading as C compilers
+ incorrectly reject 9223372036854775807. */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+ int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+ && LARGE_OFF_T % 2147483647 == 1)
+ ? 1 : -1];
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -s conftest.$ac_objext'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ break
+else
+ echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+ cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+#define _LARGE_FILES 1
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+ We can't simply define LARGE_OFF_T to be 9223372036854775807,
+ since some C++ compilers masquerading as C compilers
+ incorrectly reject 9223372036854775807. */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+ int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+ && LARGE_OFF_T % 2147483647 == 1)
+ ? 1 : -1];
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -s conftest.$ac_objext'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ ac_cv_sys_large_files=1; break
+else
+ echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+ break
+done
+fi
+echo "$as_me:$LINENO: result: $ac_cv_sys_large_files" >&5
+echo "${ECHO_T}$ac_cv_sys_large_files" >&6
+if test "$ac_cv_sys_large_files" != no; then
+
+cat >>confdefs.h <<_ACEOF
+#define _LARGE_FILES $ac_cv_sys_large_files
+_ACEOF
+
+fi
+rm -f conftest*
+fi
+
+
# Must be GCC.
test "x$GCC" = xyes || { { echo "$as_me:$LINENO: error: GCC is required" >&5
echo "$as_me: error: GCC is required" >&2;}
-Wundef -Wstrict-prototypes -g"
# optimization flags.
-
-echo "$as_me:$LINENO: checking whether optimization for size works" >&5
+ echo "$as_me:$LINENO: checking whether optimization for size works" >&5
echo $ECHO_N "checking whether optimization for size works... $ECHO_C" >&6
if test "${size_flag+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
fi
AC_PROG_CC
+AC_SYS_LARGEFILE
# Must be GCC.
test "x$GCC" = xyes || AC_MSG_ERROR([GCC is required])
--- /dev/null
+/* ext2.c - Second Extended filesystem */
+/*
+ * PUPA -- Preliminary Universal Programming Architecture for GRUB
+ * Copyright (C) 2003 Marco Gerards <metgerards@student.han.nl>.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/* Magic value used to identify an ext2 filesystem. */
+#define EXT2_MAGIC 0xEF53
+/* Amount of indirect blocks in an inode. */
+#define INDIRECT_BLOCKS 12
+/* Maximum lenght of a pathname. */
+#define EXT2_PATH_MAX 4096
+/* Maximum nesting of symlinks, used to prevent a loop. */
+#define EXT2_MAX_SYMLINKCNT 8
+
+/* Filetype used in directory entry. */
+#define FILETYPE_DIRECTORY 2
+#define FILETYPE_SYMLINK 7
+
+#include <pupa/err.h>
+#include <pupa/file.h>
+#include <pupa/mm.h>
+#include <pupa/misc.h>
+#include <pupa/disk.h>
+#include <pupa/dl.h>
+#include <pupa/types.h>
+
+/* Log2 size of ext2 block in 512 blocks. */
+#define LOG2_EXT2_BLOCK_SIZE(data) \
+ (pupa_le_to_cpu32 (data->sblock.log2_block_size) + 1)
+
+/* Log2 size of ext2 block in bytes. */
+#define LOG2_BLOCK_SIZE(data) \
+ (pupa_le_to_cpu32 (data->sblock.log2_block_size) + 10)
+
+/* The size of an ext2 block in bytes. */
+#define EXT2_BLOCK_SIZE(data) (1 << LOG2_BLOCK_SIZE(data))
+
+/* The ext2 superblock. */
+struct pupa_ext_sblock
+{
+ pupa_uint32_t total_inodes;
+ pupa_uint32_t total_blocks;
+ pupa_uint32_t reserved_blocks;
+ pupa_uint32_t free_blocks;
+ pupa_uint32_t free_inodes;
+ pupa_uint32_t first_data_block;
+ pupa_uint32_t log2_block_size;
+ pupa_uint32_t log2_fragment_size;
+ pupa_uint32_t blocks_per_group;
+ pupa_uint32_t fragments_per_group;
+ pupa_uint32_t inodes_per_group;
+ pupa_uint32_t mtime;
+ pupa_uint32_t utime;
+ pupa_uint16_t mnt_count;
+ pupa_uint16_t max_mnt_count;
+ pupa_uint16_t magic;
+ pupa_uint16_t fs_state;
+ pupa_uint16_t error_handling;
+ pupa_uint16_t minor_revision_level;
+ pupa_uint32_t lastcheck;
+ pupa_uint32_t checkinterval;
+ pupa_uint32_t creator_os;
+ pupa_uint32_t revision_level;
+ pupa_uint16_t uid_reserved;
+ pupa_uint16_t gid_reserved;
+ pupa_uint32_t first_inode;
+ pupa_uint16_t inode_size;
+ pupa_uint16_t block_group_number;
+ pupa_uint32_t feature_compatibility;
+ pupa_uint32_t feature_incompat;
+ pupa_uint32_t feature_ro_compat;
+ pupa_uint32_t unique_id[4];
+ char volume_name[16];
+ char last_mounted_on[64];
+ pupa_uint32_t compression_info;
+};
+
+/* The ext2 blockgroup. */
+struct ext2_block_group
+{
+ pupa_uint32_t block_id;
+ pupa_uint32_t inode_id;
+ pupa_uint32_t inode_table_id;
+ pupa_uint16_t free_blocks;
+ pupa_uint16_t free_inodes;
+ pupa_uint16_t pad;
+ pupa_uint32_t reserved[3];
+};
+
+/* The ext2 inode. */
+struct pupa_ext2_inode
+{
+ pupa_uint16_t mode;
+ pupa_uint16_t uid;
+ pupa_uint32_t size;
+ pupa_uint32_t atime;
+ pupa_uint32_t ctime;
+ pupa_uint32_t mtime;
+ pupa_uint32_t dtime;
+ pupa_uint16_t gid;
+ pupa_uint16_t nlinks;
+ pupa_uint32_t blockcnt; /* Blocks of 512 bytes!! */
+ pupa_uint32_t flags;
+ pupa_uint32_t osd1;
+ union
+ {
+ struct datablocks
+ {
+ pupa_uint32_t dir_blocks[INDIRECT_BLOCKS];
+ pupa_uint32_t indir_block;
+ pupa_uint32_t double_indir_block;
+ pupa_uint32_t tripple_indir_block;
+ };
+ char symlink[60];
+ };
+ pupa_uint32_t version;
+ pupa_uint32_t acl;
+ pupa_uint32_t dir_acl;
+ pupa_uint32_t fragment_addr;
+ pupa_uint32_t osd2[3];
+};
+
+/* The header of an ext2 directory entry. */
+struct ext2_dirent
+{
+ pupa_uint32_t inode;
+ pupa_uint16_t direntlen;
+ pupa_uint8_t namelen;
+ pupa_uint8_t filetype;
+};
+
+/* Information about a "mounted" ext2 filesystem. */
+struct pupa_ext2_data
+{
+ struct pupa_ext_sblock sblock;
+ pupa_disk_t disk;
+ struct pupa_ext2_inode inode;
+};
+
+#ifndef PUPA_UTIL
+static pupa_dl_t my_mod;
+#endif
+\f
+/* Read into BLKGRP the blockgroup descriptor of blockgroup GROUP of
+ the mounted filesystem DATA. */
+inline static pupa_err_t
+pupa_ext2_blockgroup (struct pupa_ext2_data *data, int group,
+ struct ext2_block_group *blkgrp)
+{
+ return pupa_disk_read (data->disk,
+ ((pupa_le_to_cpu32 (data->sblock.first_data_block) + 1)
+ << LOG2_EXT2_BLOCK_SIZE (data)),
+ group * sizeof (struct ext2_block_group),
+ sizeof (struct ext2_block_group), (char *) blkgrp);
+}
+
+/* Return in BLOCK the on disk block number of block FILEBLOCK in the
+ opened file descibed by DATA. If this block is not stored on disk
+ in case of a sparse file return 0. */
+static pupa_err_t
+pupa_ext2_get_file_block (struct pupa_ext2_data *data,
+ int fileblock, int *block)
+{
+ int blknr;
+ struct pupa_ext2_inode *inode = &data->inode;
+
+ /* Direct blocks. */
+ if (fileblock < INDIRECT_BLOCKS)
+ blknr = pupa_le_to_cpu32 (inode->dir_blocks[fileblock]);
+ /* Indirect. */
+ else if (fileblock < INDIRECT_BLOCKS + EXT2_BLOCK_SIZE (data) / 4)
+ {
+ pupa_uint32_t indir[EXT2_BLOCK_SIZE (data) / 4];
+
+ if (pupa_disk_read (data->disk, pupa_le_to_cpu32 (inode->indir_block)
+ << LOG2_EXT2_BLOCK_SIZE (data),
+ 0, EXT2_BLOCK_SIZE (data), (char *) indir))
+ return pupa_errno;
+
+ blknr = pupa_le_to_cpu32 (indir[fileblock - INDIRECT_BLOCKS]);
+ }
+ /* Double indirect. */
+ else if (fileblock < INDIRECT_BLOCKS + EXT2_BLOCK_SIZE (data) / 4
+ * (EXT2_BLOCK_SIZE (data) / 4 + 1))
+ {
+ unsigned int perblock = EXT2_BLOCK_SIZE (data) / 4;
+ unsigned int rblock = fileblock - (INDIRECT_BLOCKS
+ + EXT2_BLOCK_SIZE (data) / 4);
+ pupa_uint32_t indir[EXT2_BLOCK_SIZE (data) / 4];
+
+ if (pupa_disk_read (data->disk,
+ pupa_le_to_cpu32 (inode->double_indir_block)
+ << LOG2_EXT2_BLOCK_SIZE (data),
+ 0, EXT2_BLOCK_SIZE (data), (char *) indir))
+ return pupa_errno;
+
+ if (pupa_disk_read (data->disk,
+ pupa_le_to_cpu32 (indir[rblock / perblock])
+ << LOG2_EXT2_BLOCK_SIZE (data),
+ 0, EXT2_BLOCK_SIZE (data), (char *) indir))
+ return pupa_errno;
+
+
+ blknr = pupa_le_to_cpu32 (indir[rblock % perblock]);
+ }
+ /* Tripple indirect. */
+ else
+ {
+ pupa_error (PUPA_ERR_NOT_IMPLEMENTED_YET,
+ "ext2fs doesn't support tripple indirect blocks");
+ return pupa_errno;
+ }
+
+ *block = blknr;
+
+ return 0;
+}
+
+/* Read LEN bytes from the file described by DATA starting with byte
+ POS. Return the amount of read bytes in READ. */
+static pupa_err_t
+pupa_ext2_read_file (struct pupa_ext2_data *data, int pos,
+ unsigned int len, char *buf)
+{
+ int i;
+ int blockcnt;
+
+ /* Adjust len so it we can't read past the end of the file. */
+ if (len > pupa_le_to_cpu32 (data->inode.size))
+ len = pupa_le_to_cpu32 (data->inode.size);
+
+ blockcnt = ((len + pos)
+ + EXT2_BLOCK_SIZE (data) - 1) / EXT2_BLOCK_SIZE (data);
+
+ for (i = pos / EXT2_BLOCK_SIZE (data); i < blockcnt; i++)
+ {
+ int blknr;
+ int blockoff = pos % EXT2_BLOCK_SIZE (data);
+ int blockend = (len + pos) % EXT2_BLOCK_SIZE (data);
+
+ int skipfirst = 0;
+
+ pupa_ext2_get_file_block (data, i, &blknr);
+ if (pupa_errno)
+ return pupa_errno;
+
+ blknr = blknr << LOG2_EXT2_BLOCK_SIZE (data);
+
+ /* First block. */
+ if (i == pos / EXT2_BLOCK_SIZE (data))
+ skipfirst = blockoff;
+
+ if (!blockend)
+ blockend = EXT2_BLOCK_SIZE (data);
+
+ blockend -= skipfirst;
+
+ /* If the block number is 0 this block is not stored on disk but
+ is zero filled instead. */
+ if (blknr)
+ {
+ pupa_disk_read (data->disk, blknr, skipfirst,
+ blockend, buf);
+ if (pupa_errno)
+ return pupa_errno;
+ }
+ else
+ pupa_memset (buf, EXT2_BLOCK_SIZE (data) - skipfirst, 0);
+
+ buf += EXT2_BLOCK_SIZE (data) - skipfirst;
+ }
+
+ return len;
+}
+
+
+/* Read the inode INO for the file described by DATA into INODE. */
+static pupa_err_t
+pupa_ext2_read_inode (struct pupa_ext2_data *data,
+ int ino, struct pupa_ext2_inode *inode)
+{
+ struct ext2_block_group blkgrp;
+ struct pupa_ext_sblock *sblock = &data->sblock;
+ int inodes_per_block;
+
+ unsigned int blkno;
+ unsigned int blkoff;
+
+ /* It is easier to calculate if the first inode is 0. */
+ ino--;
+
+ pupa_ext2_blockgroup (data, ino / pupa_le_to_cpu32 (sblock->inodes_per_group),
+ &blkgrp);
+ if (pupa_errno)
+ return pupa_errno;
+
+ inodes_per_block = EXT2_BLOCK_SIZE (data) / 128;
+ blkno = (ino % pupa_le_to_cpu32 (sblock->inodes_per_group))
+ / inodes_per_block;
+ blkoff = (ino % pupa_le_to_cpu32 (sblock->inodes_per_group))
+ % inodes_per_block;
+
+ /* Read the inode. */
+ if (pupa_disk_read (data->disk,
+ ((pupa_le_to_cpu32 (blkgrp.inode_table_id) + blkno)
+ << LOG2_EXT2_BLOCK_SIZE (data)),
+ sizeof (struct pupa_ext2_inode) * blkoff,
+ sizeof (struct pupa_ext2_inode), (char *) inode))
+ return pupa_errno;
+
+ return 0;
+}
+
+static struct pupa_ext2_data *
+pupa_ext2_mount (pupa_disk_t disk)
+{
+ struct pupa_ext2_data *data;
+
+ data = pupa_malloc (sizeof (struct pupa_ext2_data));
+ if (!data)
+ return 0;
+
+ /* Read the superblock. */
+ pupa_disk_read (disk, 1 * 2, 0, sizeof (struct pupa_ext_sblock),
+ (char *) &data->sblock);
+ if (pupa_errno)
+ goto fail;
+
+ /* Make sure this is an ext2 filesystem. */
+ if (pupa_le_to_cpu16 (data->sblock.magic) != EXT2_MAGIC)
+ goto fail;
+
+ data->disk = disk;
+ return data;
+
+ fail:
+ pupa_error (PUPA_ERR_BAD_FS, "not an ext2 filesystem");
+ pupa_free (data);
+ return 0;
+}
+
+/* Find the file with the pathname PATH on the filesystem described by
+ DATA. Return its inode number in INO. */
+static pupa_err_t
+pupa_ext2_find_file (struct pupa_ext2_data *data, const char *path, int *ino)
+{
+ int blocksize = EXT2_BLOCK_SIZE (data)
+ << pupa_le_to_cpu32 (data->sblock.log2_block_size);
+ struct pupa_ext2_inode *inode = &data->inode;
+ int currinode = 2;
+ int symlinkcnt = 0;
+
+ char fpath[EXT2_PATH_MAX];
+ char *name = fpath;
+
+ pupa_strncpy (fpath, path, EXT2_PATH_MAX);
+
+ if (!name || name[0] != '/')
+ {
+ pupa_error (PUPA_ERR_BAD_FILENAME, "bad filename");
+ return pupa_errno;
+ }
+
+ /* Skip the first slash. */
+ name++;
+ if (!*name)
+ {
+ *ino = 2;
+ return 0;
+ }
+
+ /* Remove trailing "/". */
+ if (name[pupa_strlen (name) - 1] =='/')
+ name[pupa_strlen (name) - 1] = '\0';
+
+ while (*name)
+ {
+ unsigned int fpos = 0;
+ char *next;
+ int namesize;
+
+ /* Extract the actual part from the pathname. */
+ next = pupa_strchr (name, '/');
+ if (next)
+ {
+ next[0] = '\0';
+ next++;
+ }
+
+ namesize = pupa_strlen (name);
+
+ /* Open the file. */
+ pupa_ext2_read_inode (data, currinode, inode);
+ if (pupa_errno)
+ goto fail;
+
+ /* Search the file. */
+ while (fpos < pupa_le_to_cpu32 (inode->size))
+ {
+ struct ext2_dirent dirent;
+
+ /* Read the directory entry. */
+ pupa_ext2_read_file (data, fpos, sizeof (struct ext2_dirent),
+ (char *) &dirent);
+ if (pupa_errno)
+ goto fail;
+
+ if (dirent.namelen != 0)
+ {
+ char filename[dirent.namelen + 1];
+
+ /* Read the filename part of this directory entry. */
+ pupa_ext2_read_file (data, fpos
+ + sizeof (struct ext2_dirent),
+ dirent.namelen, filename);
+ if (pupa_errno)
+ goto fail;
+
+ filename[dirent.namelen] = '\0';
+
+ /* Check if the current directory entry described the
+ file we are looking for. */
+ if (dirent.namelen == namesize
+ && !pupa_strncmp (name, filename, namesize))
+ {
+ /* If this is a symlink, follow it. */
+ if (dirent.filetype == FILETYPE_SYMLINK)
+ {
+ /* XXX: Use malloc instead? */
+ char symlink[blocksize];
+
+ if (++symlinkcnt == EXT2_MAX_SYMLINKCNT)
+ {
+ pupa_error (PUPA_ERR_SYMLINK_LOOP,
+ "too deep nesting of symlinks");
+ goto fail;
+ }
+
+ /* Read the symlink. */
+ pupa_ext2_read_inode (data,
+ pupa_le_to_cpu32 (dirent.inode),
+ inode);
+
+ /* If the filesize of the symlink is bigger than
+ 60 the symlink is stored in a separate block,
+ otherwise it is stored in the inode. */
+ if (pupa_le_to_cpu32 (inode->size) <= 60)
+ pupa_strncpy (symlink,
+ inode->symlink,
+ pupa_le_to_cpu32 (inode->size));
+ else
+ {
+ pupa_ext2_read_file (data, 0,
+ pupa_le_to_cpu32 (inode->size),
+ symlink);
+ if (pupa_errno)
+ goto fail;
+ }
+
+ symlink[pupa_le_to_cpu32 (inode->size)] = '\0';
+
+ /* Check if the symlink is absolute or relative. */
+ if (symlink[0] == '/')
+ {
+ pupa_strncpy (fpath, symlink, EXT2_PATH_MAX);
+ name = fpath;
+ currinode = 2;
+ }
+ else
+ {
+ char *bak = 0;
+
+ if (next)
+ {
+ bak = pupa_strdup (next);
+ if (!bak)
+ goto fail;
+ }
+
+ /* Relative symlink, construct the new path. */
+ pupa_strcpy (fpath, symlink);
+ name = fpath;
+
+ if (next)
+ {
+ pupa_strcat (name, "/");
+ pupa_strcat (name, bak);
+ pupa_free (bak);
+ }
+ }
+
+ fpos = 0;
+ break;
+ }
+
+ if (next)
+ {
+ currinode = pupa_le_to_cpu32 (dirent.inode);
+ name = next;
+
+ if (dirent.filetype != FILETYPE_DIRECTORY)
+ {
+ pupa_error (PUPA_ERR_BAD_FILE_TYPE,
+ "not a directory");
+ goto fail;
+ }
+ break;
+ }
+ else /* Found it! */
+ {
+ *ino = pupa_le_to_cpu32 (dirent.inode);
+ return 0;
+ }
+ }
+ }
+
+ /* Move to next directory entry. */
+ fpos += pupa_le_to_cpu16 (dirent.direntlen);
+ }
+
+ /* The complete directory was read and no matching file was
+ found. */
+ if (fpos >= pupa_le_to_cpu32 (inode->size))
+ {
+ pupa_error (PUPA_ERR_FILE_NOT_FOUND, "file not found");
+ goto fail;
+ }
+ }
+
+ fail:
+ return pupa_errno;
+}
+
+/* Open a file named NAME and initialize FILE. */
+static pupa_err_t
+pupa_ext2_open (struct pupa_file *file, const char *name)
+{
+ struct pupa_ext2_data *data;
+ int ino;
+
+#ifndef PUPA_UTIL
+ pupa_dl_ref (my_mod);
+#endif
+
+ data = pupa_ext2_mount (file->device->disk);
+ if (!data)
+ goto fail;
+
+ pupa_ext2_find_file (data, name, &ino);
+ if (pupa_errno)
+ goto fail;
+
+ pupa_ext2_read_inode (data, ino, &data->inode);
+ if (pupa_errno)
+ goto fail;
+
+ if (!(pupa_le_to_cpu16 (data->inode.mode) & 0100000))
+ {
+ pupa_error (PUPA_ERR_BAD_FILE_TYPE, "not a regular file");
+ goto fail;
+ }
+
+ file->size = pupa_le_to_cpu32 (data->inode.size);
+ file->data = data;
+ file->offset = 0;
+
+ return 0;
+
+ fail:
+
+ pupa_free (data);
+
+#ifndef PUPA_UTIL
+ pupa_dl_unref (my_mod);
+#endif
+
+ return pupa_errno;
+}
+
+static pupa_err_t
+pupa_ext2_close (pupa_file_t file)
+{
+ pupa_free (file->data);
+
+#ifndef PUPA_UTIL
+ pupa_dl_unref (my_mod);
+#endif
+
+ return pupa_errno;
+}
+
+/* Read LEN bytes data from FILE into BUF. */
+static pupa_ssize_t
+pupa_ext2_read (pupa_file_t file, char *buf, pupa_ssize_t len)
+{
+ struct pupa_ext2_data *data =
+ (struct pupa_ext2_data *) file->data;
+
+ return pupa_ext2_read_file (data, file->offset, len, buf);
+}
+
+
+static pupa_err_t
+pupa_ext2_dir (pupa_device_t device, const char *path,
+ int (*hook) (const char *filename, int dir))
+{
+ struct pupa_ext2_data *data = 0;;
+
+ int ino;
+ unsigned int fpos = 0;
+
+#ifndef PUPA_UTIL
+ pupa_dl_ref (my_mod);
+#endif
+
+ data = pupa_ext2_mount (device->disk);
+ if (!data)
+ goto fail;
+
+ pupa_ext2_find_file (data, (char *) path, &ino);
+ if (pupa_errno)
+ goto fail;
+
+ pupa_ext2_read_inode (data, ino, &data->inode);
+ if (pupa_errno)
+ goto fail;
+
+ if (!(pupa_le_to_cpu16 (data->inode.mode) & 040000))
+ {
+ pupa_error (PUPA_ERR_BAD_FILE_TYPE, "not a directory");
+ goto fail;
+ }
+
+ /* Search the file. */
+ while (fpos < pupa_le_to_cpu32 (data->inode.size))
+ {
+ struct ext2_dirent dirent;
+
+ pupa_ext2_read_file (data, fpos, sizeof (struct ext2_dirent),
+ (char *) &dirent);
+ if (pupa_errno)
+ goto fail;
+
+ if (dirent.namelen != 0)
+ {
+ char filename[dirent.namelen + 1];
+
+ pupa_ext2_read_file (data, fpos + sizeof (struct ext2_dirent),
+ dirent.namelen, filename);
+ if (pupa_errno)
+ goto fail;
+
+ filename[dirent.namelen] = '\0';
+
+ hook (filename, dirent.filetype == FILETYPE_DIRECTORY);
+ }
+
+ fpos += pupa_le_to_cpu16 (dirent.direntlen);
+ }
+
+ fail:
+
+ pupa_free (data);
+
+#ifndef PUPA_UTIL
+ pupa_dl_unref (my_mod);
+#endif
+
+ return pupa_errno;
+}
+
+\f
+static struct pupa_fs pupa_ext2_fs =
+ {
+ .name = "ext2",
+ .dir = pupa_ext2_dir,
+ .open = pupa_ext2_open,
+ .read = pupa_ext2_read,
+ .close = pupa_ext2_close,
+ .next = 0
+ };
+
+#ifdef PUPA_UTIL
+void
+pupa_ext2_init (void)
+{
+ pupa_fs_register (&pupa_ext2_fs);
+}
+
+void
+pupa_ext2_fini (void)
+{
+ pupa_fs_unregister (&pupa_ext2_fs);
+}
+#else /* ! PUPA_UTIL */
+PUPA_MOD_INIT
+{
+ pupa_fs_register (&pupa_ext2_fs);
+ my_mod = mod;
+}
+
+PUPA_MOD_FINI
+{
+ pupa_fs_unregister (&pupa_ext2_fs);
+}
+#endif /* ! PUPA_UTIL */
/*
* PUPA -- Preliminary Universal Programming Architecture for GRUB
* Copyright (C) 2002 Yoshinori K. Okuji <okuji@enbug.org>
+ * Copyright (C) 2002 Marco Gerards <metgerards@student.han.nl>
*
* PUPA is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
PUPA_ERR_NO_KERNEL,
PUPA_ERR_BAD_FONT,
PUPA_ERR_NOT_IMPLEMENTED_YET,
+ PUPA_ERR_SYMLINK_LOOP
}
pupa_err_t;
/*
* PUPA -- Preliminary Universal Programming Architecture for GRUB
* Copyright (C) 2002 Yoshinori K. Okuji <okuji@enbug.org>
+ * Copyright (C) 2003 Marco Gerards <metgerards@student.han.nl>
*
* PUPA is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
void *EXPORT_FUNC(pupa_memmove) (void *dest, const void *src, pupa_size_t n);
char *EXPORT_FUNC(pupa_strcpy) (char *dest, const char *src);
+char *EXPORT_FUNC(pupa_strncpy) (char *dest, const char *src, int c);
+char *EXPORT_FUNC(pupa_strcat) (char *dest, const char *src);
+
+
int EXPORT_FUNC(pupa_memcmp) (const void *s1, const void *s2, pupa_size_t n);
int EXPORT_FUNC(pupa_strcmp) (const char *s1, const char *s2);
+int EXPORT_FUNC(pupa_strncmp) (const char *s1, const char *s2, int c);
char *EXPORT_FUNC(pupa_strchr) (const char *s, int c);
char *EXPORT_FUNC(pupa_strrchr) (const char *s, int c);
int EXPORT_FUNC(pupa_isspace) (int c);
/*
* PUPA -- Preliminary Universal Programming Architecture for GRUB
* Copyright (C) 2002 Yoshinori K. Okuji <okuji@enbug.org>
+ * Copyright (C) 2003 Marco Gerards <metgerards@student.han.nl>
*
* PUPA is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
/* Uggh... Failed. Instead, just read necessary data. */
unsigned num;
+ pupa_errno = PUPA_ERR_NONE;
+
/* If more data is required, no way. */
if (pos + size
>= (PUPA_DISK_SECTOR_SIZE << PUPA_DISK_CACHE_BITS))
* PUPA -- Preliminary Universal Programming Architecture for GRUB
* Copyright (C) 1999,2000,2001,2002 Free Software Foundation, Inc.
* Copyright (C) 2002 Yoshinori K. Okuji <okuji@enbug.org>
+ * Copyright (C) 2003 Marco Gerards <metgerards@student.han.nl>
*
* PUPA is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
return dest;
}
-#if 0
+char *
+pupa_strncpy (char *dest, const char *src, int c)
+{
+ char *p = dest;
+ int pos = 0;
+
+ while ((*p++ = *src++) != '\0' && c > pos)
+ pos++;
+
+ return dest;
+}
+
char *
pupa_strcat (char *dest, const char *src)
{
return dest;
}
-#endif
int
pupa_printf (const char *fmt, ...)
return (int) *s1 - (int) *s2;
}
+int
+pupa_strncmp (const char *s1, const char *s2, int c)
+{
+ int p = 1;
+
+ while (*s1 && *s2 && p < c)
+ {
+ if (*s1 != *s2)
+ return (int) *s1 - (int) *s2;
+
+ s1++;
+ s2++;
+ p++;
+ }
+
+ return (int) *s1 - (int) *s2;
+}
+
char *
pupa_strchr (const char *s, int c)
{
* PUPA -- Preliminary Universal Programming Architecture for GRUB
* Copyright (C) 1999,2000,2001,2002 Free Software Foundation, Inc.
* Copyright (C) 2002 Yoshinori K. Okuji <okuji@enbug.org>
+ * Copyright (C) 2003 Marco Gerards <metgerards@student.han.nl>
*
* PUPA is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#include <pupa/err.h>
#include <pupa/util/misc.h>
-/* Try to use glibc's transparant LFS support. */
-#define _LARGEFILE_SOURCE 1
-/* lseek becomes synonymous with lseek64. */
-#define _FILE_OFFSET_BITS 64
-
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
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