2003-10-27 Marco Gerards <metgerards@student.han.nl>
* README: In the pupa-mkimage example use _chain instead of chain and ext2 instead of fat. * TODO: Replace ext2fs with jfs as an example. Add an item for adding journal playback for ext2fs. * conf/i386-pc.rmk (pupa_setup_SOURCES): Added fs/ext2.c. (pkgdata_MODULES): Added ext2.mod. (ext2_mod_SOURCES): New variable. (ext2_mod_CFLAGS): Likewise. * include/pupa/err.h (pupa_err_t): Added PUPA_ERR_SYMLINK_LOOP. * include/pupa/misc.h (pupa_strncpy): New prototype. (pupa_strcat): Likewise. (pupa_strncmp): Likewise. * kern/misc.c (pupa_strcat): Enable function. (pupa_strncpy): New function. (pupa_strncmp): Likewise. * kern/disk.c (pupa_disk_read): Set pupa_errno to PUPA_ERR_NONE when the read failed before retrying. * util/i386/pc/biosdisk.c (_LARGEFILE_SOURCE): Removed. (_FILE_OFFSET_BITS): Likewise. * configure.ac: Added AC_SYS_LARGEFILE.
This commit is contained in:
marco_g
parent
98d150633e
commit
a35eed7c3e
13 changed files with 1149 additions and 18 deletions
2
README
2
README
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@ -18,7 +18,7 @@ use (yet). For now, you can install PUPA into a floppy by these
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instructions:
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$ configure && make
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$ ./pupa-mkimage -v -d . -o core.img chain fat
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$ ./pupa-mkimage -v -d . -o core.img _chain ext2
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$ dd if=boot.img of=/dev/fd0 bs=512 count=1
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$ dd if=core.img of=/dev/fd0 bs=512 seek=1
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4
TODO
4
TODO
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@ -13,7 +13,9 @@ Priorities:
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higher priority.
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* Add more filesystems (such as ext2fs, ffs, and reiserfs). !
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* Add more filesystems (such as jfs, ffs, and reiserfs). !
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* Add journal playback support to ext2fs (so it will become ext3fs).
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* Add support for internationalization. !!!
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@ -280,11 +280,11 @@ pupa_mkimage_LDFLAGS = -llzo
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# For pupa-setup.
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pupa_setup_SOURCES = util/i386/pc/pupa-setup.c util/i386/pc/biosdisk.c \
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util/misc.c kern/device.c kern/disk.c kern/file.c kern/fs.c \
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kern/err.c kern/misc.c disk/i386/pc/partition.c fs/fat.c
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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
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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
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kern/err.c kern/misc.c disk/i386/pc/partition.c fs/fat.c fs/ext2.c
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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
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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
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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
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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
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$(BUILD_CC) -o $@ $^ $(BUILD_LDFLAGS) $(pupa_setup_LDFLAGS)
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pupa_setup-util_i386_pc_pupa_setup.o: util/i386/pc/pupa-setup.c
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@ -375,6 +375,14 @@ pupa_setup-fs_fat.d: fs/fat.c
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-include pupa_setup-fs_fat.d
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pupa_setup-fs_ext2.o: fs/ext2.c
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$(BUILD_CC) -Ifs -I$(srcdir)/fs $(BUILD_CPPFLAGS) $(BUILD_CFLAGS) -DPUPA_UTIL=1 $(pupa_setup_CFLAGS) -c -o $@ $<
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pupa_setup-fs_ext2.d: fs/ext2.c
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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 $@
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-include pupa_setup-fs_ext2.d
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# For genmoddep.
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genmoddep_SOURCES = util/genmoddep.c
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@ -394,7 +402,7 @@ genmoddep-util_genmoddep.d: util/genmoddep.c
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# Modules.
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pkgdata_MODULES = _chain.mod _linux.mod fat.mod normal.mod hello.mod \
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pkgdata_MODULES = _chain.mod _linux.mod fat.mod ext2.mod normal.mod hello.mod \
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vga.mod font.mod
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# For _chain.mod.
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@ -475,6 +483,45 @@ fat_mod-fs_fat.d: fs/fat.c
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fat_mod_CFLAGS = $(COMMON_CFLAGS)
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# For ext2.mod.
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ext2_mod_SOURCES = fs/ext2.c
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CLEANFILES += ext2.mod mod-ext2.o mod-ext2.c pre-ext2.o ext2_mod-fs_ext2.o def-ext2.lst und-ext2.lst
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MOSTLYCLEANFILES += ext2_mod-fs_ext2.d
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DEFSYMFILES += def-ext2.lst
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UNDSYMFILES += und-ext2.lst
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ext2.mod: pre-ext2.o mod-ext2.o
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-rm -f $@
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$(LD) -r -o $@ $^
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$(STRIP) --strip-unneeded -K pupa_mod_init -K pupa_mod_fini -R .note -R .comment $@
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pre-ext2.o: ext2_mod-fs_ext2.o
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-rm -f $@
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$(LD) -r -o $@ $^
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mod-ext2.o: mod-ext2.c
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$(CC) $(CPPFLAGS) $(CFLAGS) $(ext2_mod_CFLAGS) -c -o $@ $<
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mod-ext2.c: moddep.lst genmodsrc.sh
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sh $(srcdir)/genmodsrc.sh 'ext2' $< > $@ || (rm -f $@; exit 1)
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def-ext2.lst: pre-ext2.o
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$(NM) -g --defined-only -P -p $< | sed 's/^\([^ ]*\).*/\1 ext2/' > $@
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und-ext2.lst: pre-ext2.o
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echo 'ext2' > $@
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$(NM) -u -P -p $< | cut -f1 -d' ' >> $@
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ext2_mod-fs_ext2.o: fs/ext2.c
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$(CC) -Ifs -I$(srcdir)/fs $(CPPFLAGS) $(CFLAGS) $(ext2_mod_CFLAGS) -c -o $@ $<
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ext2_mod-fs_ext2.d: fs/ext2.c
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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 $@
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-include ext2_mod-fs_ext2.d
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ext2_mod_CFLAGS = $(COMMON_CFLAGS)
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# For _linux.mod.
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_linux_mod_SOURCES = loader/i386/pc/linux.c
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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
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@ -55,13 +55,13 @@ pupa_mkimage_LDFLAGS = -llzo
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# For pupa-setup.
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pupa_setup_SOURCES = util/i386/pc/pupa-setup.c util/i386/pc/biosdisk.c \
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util/misc.c kern/device.c kern/disk.c kern/file.c kern/fs.c \
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kern/err.c kern/misc.c disk/i386/pc/partition.c fs/fat.c
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kern/err.c kern/misc.c disk/i386/pc/partition.c fs/fat.c fs/ext2.c
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# For genmoddep.
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genmoddep_SOURCES = util/genmoddep.c
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# Modules.
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pkgdata_MODULES = _chain.mod _linux.mod fat.mod normal.mod hello.mod \
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pkgdata_MODULES = _chain.mod _linux.mod fat.mod ext2.mod normal.mod hello.mod \
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vga.mod font.mod
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# For _chain.mod.
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@ -72,6 +72,10 @@ _chain_mod_CFLAGS = $(COMMON_CFLAGS)
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fat_mod_SOURCES = fs/fat.c
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fat_mod_CFLAGS = $(COMMON_CFLAGS)
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# For ext2.mod.
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ext2_mod_SOURCES = fs/ext2.c
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ext2_mod_CFLAGS = $(COMMON_CFLAGS)
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# For _linux.mod.
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_linux_mod_SOURCES = loader/i386/pc/linux.c
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_linux_mod_CFLAGS = $(COMMON_CFLAGS)
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@ -79,3 +79,9 @@
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/* Define to 1 if your processor stores words with the most significant byte
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first (like Motorola and SPARC, unlike Intel and VAX). */
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#undef WORDS_BIGENDIAN
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/* Number of bits in a file offset, on hosts where this is settable. */
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#undef _FILE_OFFSET_BITS
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/* Define for large files, on AIX-style hosts. */
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#undef _LARGE_FILES
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318
configure
vendored
318
configure
vendored
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@ -844,6 +844,11 @@ if test -n "$ac_init_help"; then
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esac
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cat <<\_ACEOF
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Optional Features:
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--disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no)
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--enable-FEATURE[=ARG] include FEATURE [ARG=yes]
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--disable-largefile omit support for large files
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Some influential environment variables:
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CC C compiler command
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CFLAGS C compiler flags
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@ -2247,6 +2252,316 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $
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ac_compiler_gnu=$ac_cv_c_compiler_gnu
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# Check whether --enable-largefile or --disable-largefile was given.
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if test "${enable_largefile+set}" = set; then
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enableval="$enable_largefile"
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fi;
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if test "$enable_largefile" != no; then
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echo "$as_me:$LINENO: checking for special C compiler options needed for large files" >&5
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echo $ECHO_N "checking for special C compiler options needed for large files... $ECHO_C" >&6
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if test "${ac_cv_sys_largefile_CC+set}" = set; then
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echo $ECHO_N "(cached) $ECHO_C" >&6
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else
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ac_cv_sys_largefile_CC=no
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if test "$GCC" != yes; then
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ac_save_CC=$CC
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while :; do
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# IRIX 6.2 and later do not support large files by default,
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# so use the C compiler's -n32 option if that helps.
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cat >conftest.$ac_ext <<_ACEOF
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#line $LINENO "configure"
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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#include <sys/types.h>
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/* Check that off_t can represent 2**63 - 1 correctly.
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We can't simply define LARGE_OFF_T to be 9223372036854775807,
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since some C++ compilers masquerading as C compilers
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incorrectly reject 9223372036854775807. */
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#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
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int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
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&& LARGE_OFF_T % 2147483647 == 1)
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? 1 : -1];
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int
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main ()
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{
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;
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return 0;
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}
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_ACEOF
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rm -f conftest.$ac_objext
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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(eval $ac_compile) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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{ ac_try='test -s conftest.$ac_objext'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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break
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else
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echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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fi
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rm -f conftest.$ac_objext
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CC="$CC -n32"
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rm -f conftest.$ac_objext
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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(eval $ac_compile) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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{ ac_try='test -s conftest.$ac_objext'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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ac_cv_sys_largefile_CC=' -n32'; break
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else
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echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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fi
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rm -f conftest.$ac_objext
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break
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done
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CC=$ac_save_CC
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rm -f conftest.$ac_ext
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fi
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fi
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echo "$as_me:$LINENO: result: $ac_cv_sys_largefile_CC" >&5
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echo "${ECHO_T}$ac_cv_sys_largefile_CC" >&6
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if test "$ac_cv_sys_largefile_CC" != no; then
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CC=$CC$ac_cv_sys_largefile_CC
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fi
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echo "$as_me:$LINENO: checking for _FILE_OFFSET_BITS value needed for large files" >&5
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echo $ECHO_N "checking for _FILE_OFFSET_BITS value needed for large files... $ECHO_C" >&6
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if test "${ac_cv_sys_file_offset_bits+set}" = set; then
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echo $ECHO_N "(cached) $ECHO_C" >&6
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else
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while :; do
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ac_cv_sys_file_offset_bits=no
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cat >conftest.$ac_ext <<_ACEOF
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#line $LINENO "configure"
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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#include <sys/types.h>
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/* Check that off_t can represent 2**63 - 1 correctly.
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We can't simply define LARGE_OFF_T to be 9223372036854775807,
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since some C++ compilers masquerading as C compilers
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incorrectly reject 9223372036854775807. */
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#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
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int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
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&& LARGE_OFF_T % 2147483647 == 1)
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? 1 : -1];
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int
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main ()
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{
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;
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return 0;
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}
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_ACEOF
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rm -f conftest.$ac_objext
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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(eval $ac_compile) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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{ ac_try='test -s conftest.$ac_objext'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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break
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else
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echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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fi
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rm -f conftest.$ac_objext conftest.$ac_ext
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cat >conftest.$ac_ext <<_ACEOF
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#line $LINENO "configure"
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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#define _FILE_OFFSET_BITS 64
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#include <sys/types.h>
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/* Check that off_t can represent 2**63 - 1 correctly.
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We can't simply define LARGE_OFF_T to be 9223372036854775807,
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since some C++ compilers masquerading as C compilers
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incorrectly reject 9223372036854775807. */
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#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
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int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
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&& LARGE_OFF_T % 2147483647 == 1)
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? 1 : -1];
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int
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main ()
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{
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;
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return 0;
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}
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_ACEOF
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rm -f conftest.$ac_objext
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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(eval $ac_compile) 2>&5
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ac_status=$?
|
||||
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 "$as_me: error: GCC is required" >&2;}
|
||||
|
|
@ -2258,8 +2573,7 @@ if test "x$default_CFLAGS" = xyes; then
|
|||
-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) $ECHO_C" >&6
|
||||
|
|
|
|||
|
|
@ -39,6 +39,7 @@ if test "x$CFLAGS" = x; then
|
|||
fi
|
||||
|
||||
AC_PROG_CC
|
||||
AC_SYS_LARGEFILE
|
||||
|
||||
# Must be GCC.
|
||||
test "x$GCC" = xyes || AC_MSG_ERROR([GCC is required])
|
||||
|
|
|
|||
721
fs/ext2.c
Normal file
721
fs/ext2.c
Normal file
|
|
@ -0,0 +1,721 @@
|
|||
/* 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
|
||||
|
||||
/* 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;
|
||||
}
|
||||
|
||||
|
||||
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 */
|
||||
|
|
@ -2,6 +2,7 @@
|
|||
/*
|
||||
* 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
|
||||
|
|
@ -48,6 +49,7 @@ typedef enum
|
|||
PUPA_ERR_NO_KERNEL,
|
||||
PUPA_ERR_BAD_FONT,
|
||||
PUPA_ERR_NOT_IMPLEMENTED_YET,
|
||||
PUPA_ERR_SYMLINK_LOOP
|
||||
}
|
||||
pupa_err_t;
|
||||
|
||||
|
|
|
|||
|
|
@ -2,6 +2,7 @@
|
|||
/*
|
||||
* 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
|
||||
|
|
@ -30,8 +31,13 @@
|
|||
|
||||
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);
|
||||
|
|
|
|||
|
|
@ -1,6 +1,7 @@
|
|||
/*
|
||||
* 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
|
||||
|
|
@ -350,6 +351,8 @@ pupa_disk_read (pupa_disk_t disk, unsigned long sector,
|
|||
/* 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))
|
||||
|
|
|
|||
33
kern/misc.c
33
kern/misc.c
|
|
@ -3,6 +3,7 @@
|
|||
* 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
|
||||
|
|
@ -57,7 +58,18 @@ pupa_strcpy (char *dest, const char *src)
|
|||
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)
|
||||
{
|
||||
|
|
@ -71,7 +83,6 @@ pupa_strcat (char *dest, const char *src)
|
|||
|
||||
return dest;
|
||||
}
|
||||
#endif
|
||||
|
||||
int
|
||||
pupa_printf (const char *fmt, ...)
|
||||
|
|
@ -125,6 +136,24 @@ pupa_strcmp (const char *s1, const char *s2)
|
|||
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)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -3,6 +3,7 @@
|
|||
* 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
|
||||
|
|
@ -26,11 +27,6 @@
|
|||
#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>
|
||||
|
|
|
|||
Loading…
Reference in a new issue