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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] Add iso9660 support to libfsimage.
# HG changeset patch
# User john.levon@xxxxxxx
# Date 1172012044 28800
# Node ID fe3e024e38f8323c311fbd61710eff3c4b92f514
# Parent bca284f67702cf46502809f29eb634e2ab6d294f
Add iso9660 support to libfsimage.
Signed-off-by: John Levon <john.levon@xxxxxxx>
---
tools/libfsimage/Makefile | 2
tools/libfsimage/common/fsimage_grub.c | 78 +++++
tools/libfsimage/common/fsimage_grub.h | 5
tools/libfsimage/common/mapfile-GNU | 1
tools/libfsimage/common/mapfile-SunOS | 1
tools/libfsimage/ext2fs/fsys_ext2fs.c | 89 -----
tools/libfsimage/iso9660/Makefile | 15
tools/libfsimage/iso9660/fsys_iso9660.c | 463 ++++++++++++++++++++++++++++++
tools/libfsimage/iso9660/iso9660.h | 219 ++++++++++++++
tools/libfsimage/reiserfs/fsys_reiserfs.c | 77 ----
10 files changed, 783 insertions(+), 167 deletions(-)
diff -r bca284f67702 -r fe3e024e38f8 tools/libfsimage/Makefile
--- a/tools/libfsimage/Makefile Wed Feb 21 10:13:40 2007 +0000
+++ b/tools/libfsimage/Makefile Tue Feb 20 14:54:04 2007 -0800
@@ -1,7 +1,7 @@ XEN_ROOT = ../..
XEN_ROOT = ../..
include $(XEN_ROOT)/tools/Rules.mk
-SUBDIRS-y = common ufs reiserfs
+SUBDIRS-y = common ufs reiserfs iso9660
SUBDIRS-y += $(shell ./check-libext2fs)
.PHONY: all
diff -r bca284f67702 -r fe3e024e38f8 tools/libfsimage/common/fsimage_grub.c
--- a/tools/libfsimage/common/fsimage_grub.c Wed Feb 21 10:13:40 2007 +0000
+++ b/tools/libfsimage/common/fsimage_grub.c Tue Feb 20 14:54:04 2007 -0800
@@ -122,6 +122,84 @@ fsig_disk_read_junk(void)
return (&disk_read_junk);
}
+#if defined(__i386__) || defined(__x86_64__)
+
+#ifdef __amd64
+#define BSF "bsfq"
+#else
+#define BSF "bsfl"
+#endif
+unsigned long
+fsig_log2 (unsigned long word)
+{
+ __asm__ (BSF " %1,%0"
+ : "=r" (word)
+ : "r" (word));
+ return word;
+}
+
+#elif defined(__ia64__)
+
+#if __GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
+# define ia64_popcnt(x) __builtin_popcountl(x)
+#else
+# define ia64_popcnt(x) \
+ ({ \
+ __u64 ia64_intri_res; \
+ asm ("popcnt %0=%1" : "=r" (ia64_intri_res) : "r" (x)); \
+ ia64_intri_res; \
+ })
+#endif
+
+unsigned long
+fsig_log2 (unsigned long word)
+{
+ unsigned long result;
+
+ result = ia64_popcnt((word - 1) & ~word);
+ return result;
+}
+
+#elif defined(__powerpc__)
+
+#ifdef __powerpc64__
+#define PPC_CNTLZL "cntlzd"
+#else
+#define PPC_CNTLZL "cntlzw"
+#endif
+#define BITS_PER_LONG (sizeof(long) * 8)
+
+static int
+__ilog2(unsigned long x)
+{
+ int lz;
+
+ asm (PPC_CNTLZL " %0,%1" : "=r" (lz) : "r" (x));
+ return BITS_PER_LONG - 1 - lz;
+}
+
+unsigned long
+fsig_log2 (unsigned long word)
+{
+ return __ilog2(word & -word);
+}
+
+#else /* Unoptimized */
+
+unsigned long
+fsig_log2 (unsigned long word)
+{
+ unsigned long result = 0;
+
+ while (!(word & 1UL))
+ {
+ result++;
+ word >>= 1;
+ }
+ return result;
+}
+#endif
+
int
fsig_devread(fsi_file_t *ffi, unsigned int sector, unsigned int offset,
unsigned int bufsize, char *buf)
diff -r bca284f67702 -r fe3e024e38f8 tools/libfsimage/common/fsimage_grub.h
--- a/tools/libfsimage/common/fsimage_grub.h Wed Feb 21 10:13:40 2007 +0000
+++ b/tools/libfsimage/common/fsimage_grub.h Tue Feb 20 14:54:04 2007 -0800
@@ -57,16 +57,19 @@ typedef struct fsig_plugin_ops {
#define disk_read_func (*fsig_disk_read_junk())
#define disk_read_hook (*fsig_disk_read_junk())
#define print_possibilities 0
+#define noisy_printf
#define grub_memset memset
#define grub_memmove memmove
+#define grub_log2 fsig_log2
extern char **fsig_disk_read_junk(void);
+unsigned long fsig_log2(unsigned long);
#define ERR_FSYS_CORRUPT 1
+#define ERR_OUTSIDE_PART 1
#define ERR_SYMLINK_LOOP 1
#define ERR_FILELENGTH 1
-#define ERR_BAD_FILETYPE 1
#define ERR_BAD_FILETYPE 1
#define ERR_FILE_NOT_FOUND 1
diff -r bca284f67702 -r fe3e024e38f8 tools/libfsimage/common/mapfile-GNU
--- a/tools/libfsimage/common/mapfile-GNU Wed Feb 21 10:13:40 2007 +0000
+++ b/tools/libfsimage/common/mapfile-GNU Tue Feb 20 14:54:04 2007 -0800
@@ -20,6 +20,7 @@ VERSION {
fsig_init;
fsig_devread;
fsig_substring;
+ fsig_log2;
fsig_fs_buf;
fsig_file_alloc;
fsig_file_buf;
diff -r bca284f67702 -r fe3e024e38f8 tools/libfsimage/common/mapfile-SunOS
--- a/tools/libfsimage/common/mapfile-SunOS Wed Feb 21 10:13:40 2007 +0000
+++ b/tools/libfsimage/common/mapfile-SunOS Tue Feb 20 14:54:04 2007 -0800
@@ -19,6 +19,7 @@ libfsimage.so.1.0 {
fsig_init;
fsig_devread;
fsig_substring;
+ fsig_log2;
fsig_fs_buf;
fsig_file_alloc;
fsig_file_buf;
diff -r bca284f67702 -r fe3e024e38f8 tools/libfsimage/ext2fs/fsys_ext2fs.c
--- a/tools/libfsimage/ext2fs/fsys_ext2fs.c Wed Feb 21 10:13:40 2007 +0000
+++ b/tools/libfsimage/ext2fs/fsys_ext2fs.c Tue Feb 20 14:54:04 2007 -0800
@@ -191,7 +191,7 @@ struct ext2_dir_entry
/* ext2/super.c */
-#define log2(n) ffz(~(n))
+#define log2(n) grub_log2(n)
#define EXT2_SUPER_MAGIC 0xEF53 /* include/linux/ext2_fs.h */
#define EXT2_ROOT_INO 2 /* include/linux/ext2_fs.h */
@@ -231,93 +231,6 @@ struct ext2_dir_entry
#define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
-
-#if defined(__i386__) || defined(__x86_64__)
-/* include/asm-i386/bitops.h */
-/*
- * ffz = Find First Zero in word. Undefined if no zero exists,
- * so code should check against ~0UL first..
- */
-#ifdef __amd64
-#define BSF "bsfq"
-#else
-#define BSF "bsfl"
-#endif
-static __inline__ unsigned long
-ffz (unsigned long word)
-{
- __asm__ (BSF " %1,%0"
-: "=r" (word)
-: "r" (~word));
- return word;
-}
-
-#elif defined(__ia64__)
-
-typedef unsigned long __u64;
-
-#if __GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
-# define ia64_popcnt(x) __builtin_popcountl(x)
-#else
-# define ia64_popcnt(x) \
- ({ \
- __u64 ia64_intri_res; \
- asm ("popcnt %0=%1" : "=r" (ia64_intri_res) : "r" (x)); \
- ia64_intri_res; \
- })
-#endif
-
-static __inline__ unsigned long
-ffz (unsigned long word)
-{
- unsigned long result;
-
- result = ia64_popcnt(word & (~word - 1));
- return result;
-}
-
-#elif defined(__powerpc__)
-
-#ifdef __powerpc64__
-#define PPC_CNTLZL "cntlzd"
-#else
-#define PPC_CNTLZL "cntlzw"
-#endif
-#define BITS_PER_LONG (sizeof(long) * 8)
-
-static __inline__ int
-__ilog2(unsigned long x)
-{
- int lz;
-
- asm (PPC_CNTLZL " %0,%1" : "=r" (lz) : "r" (x));
- return BITS_PER_LONG - 1 - lz;
-}
-
-static __inline__ unsigned long
-ffz (unsigned long word)
-{
- if ((word = ~word) == 0)
- return BITS_PER_LONG;
- return __ilog2(word & -word);
-}
-
-#else /* Unoptimized */
-
-static __inline__ unsigned long
-ffz (unsigned long word)
-{
- unsigned long result;
-
- result = 0;
- while(word & 1)
- {
- result++;
- word >>= 1;
- }
- return result;
-}
-#endif
/* check filesystem types and read superblock into memory buffer */
int
diff -r bca284f67702 -r fe3e024e38f8 tools/libfsimage/iso9660/Makefile
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/libfsimage/iso9660/Makefile Tue Feb 20 14:54:04 2007 -0800
@@ -0,0 +1,15 @@
+XEN_ROOT = ../../..
+
+LIB_SRCS-y = fsys_iso9660.c
+
+FS = iso9660
+
+.PHONY: all
+all: fs-all
+
+.PHONY: install
+install: fs-install
+
+fsys_iso9660.c: iso9660.h
+
+include $(XEN_ROOT)/tools/libfsimage/Rules.mk
diff -r bca284f67702 -r fe3e024e38f8 tools/libfsimage/iso9660/fsys_iso9660.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/libfsimage/iso9660/fsys_iso9660.c Tue Feb 20 14:54:04 2007 -0800
@@ -0,0 +1,463 @@
+/*
+ * ISO 9660 filesystem backend for GRUB (GRand Unified Bootloader)
+ * including Rock Ridge Extensions support
+ *
+ * Copyright (C) 1998, 1999 Kousuke Takai <tak@xxxxxxxxxxxxxxxxx>
+ *
+ * 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.
+ */
+/*
+ * References:
+ * linux/fs/isofs/rock.[ch]
+ * mkisofs-1.11.1/diag/isoinfo.c
+ * mkisofs-1.11.1/iso9660.h
+ * (all are written by Eric Youngdale)
+ *
+ * Modifications by:
+ * Leonid Lisovskiy <lly@xxxxxxxxx> 2003
+ */
+
+#include <fsimage_grub.h>
+#include <limits.h>
+
+#include "iso9660.h"
+
+#define MAXINT INT_MAX
+
+/* iso9660 super-block data in memory */
+struct iso_sb_info {
+ unsigned long vol_sector;
+
+};
+
+/* iso fs inode data in memory */
+struct iso_inode_info {
+ unsigned long file_start;
+};
+
+#define ISO_SUPER \
+ ((struct iso_sb_info *)(FSYS_BUF))
+#define INODE \
+ ((struct iso_inode_info *)(FSYS_BUF+sizeof(struct iso_sb_info)))
+#define PRIMDESC ((struct iso_primary_descriptor *)(FSYS_BUF + 2048))
+#define DIRREC ((struct iso_directory_record *)(FSYS_BUF + 4096))
+#define RRCONT_BUF ((unsigned char *)(FSYS_BUF + 6144))
+#define NAME_BUF ((unsigned char *)(FSYS_BUF + 8192))
+
+
+#define log2 grub_log2
+
+static int
+iso9660_devread (fsi_file_t *ffi, int sector, int byte_offset, int byte_len,
char *buf)
+{
+ static int read_count = 0, threshold = 2;
+ unsigned short sector_size_lg2 = log2(512 /*buf_geom.sector_size*/);
+
+ /*
+ * We have to use own devread() function since BIOS return wrong geometry
+ */
+ if (sector < 0)
+ {
+ errnum = ERR_OUTSIDE_PART;
+ return 0;
+ }
+ if (byte_len <= 0)
+ return 1;
+
+#if 0
+ sector += (byte_offset >> sector_size_lg2);
+ byte_offset &= (buf_geom.sector_size - 1);
+ asm volatile ("shl%L0 %1,%0"
+ : "=r"(sector)
+ : "Ic"((int8_t)(ISO_SECTOR_BITS - sector_size_lg2)),
+ "0"(sector));
+#else
+ sector = (sector * 4) + (byte_offset >> sector_size_lg2);
+ byte_offset &= 511;
+#endif
+
+#if !defined(STAGE1_5)
+ if (disk_read_hook && debug)
+ printf ("<%d, %d, %d>", sector, byte_offset, byte_len);
+#endif /* !STAGE1_5 */
+
+ read_count += (byte_len >> 9);
+ if ((read_count >> 11) > threshold) {
+ noisy_printf(".");
+ threshold += 2; /* one dot every 2 MB */
+ }
+ return devread(ffi, sector, byte_offset, byte_len, buf);
+}
+
+int
+iso9660_mount (fsi_file_t *ffi, const char *options)
+{
+ unsigned int sector;
+
+ /*
+ * Because there is no defined slice type ID for ISO-9660 filesystem,
+ * this test will pass only either (1) if entire disk is used, or
+ * (2) if current partition is BSD style sub-partition whose ID is
+ * ISO-9660.
+ */
+#if 0
+ if ((current_partition != 0xFFFFFF)
+ && !IS_PC_SLICE_TYPE_BSD_WITH_FS(current_slice, FS_ISO9660))
+ return 0;
+#endif
+
+ /*
+ * Currently, only FIRST session of MultiSession disks are supported !!!
+ */
+ for (sector = 16 ; sector < 32 ; sector++)
+ {
+ if (!iso9660_devread(ffi, sector, 0, sizeof(*PRIMDESC), (char
*)PRIMDESC))
+ break;
+ /* check ISO_VD_PRIMARY and ISO_STANDARD_ID */
+ if (PRIMDESC->type.l == ISO_VD_PRIMARY
+ && !memcmp(PRIMDESC->id, ISO_STANDARD_ID, sizeof(PRIMDESC->id)))
+ {
+ ISO_SUPER->vol_sector = sector;
+ INODE->file_start = 0;
+#if 0
+ fsmax = PRIMDESC->volume_space_size.l;
+#endif
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+int
+iso9660_dir (fsi_file_t *ffi, char *dirname)
+{
+ struct iso_directory_record *idr;
+ RR_ptr_t rr_ptr;
+ struct rock_ridge *ce_ptr;
+ unsigned int pathlen;
+ int size;
+ unsigned int extent;
+ unsigned char file_type;
+ unsigned int rr_len;
+ unsigned char rr_flag;
+
+ idr = &PRIMDESC->root_directory_record;
+ INODE->file_start = 0;
+
+ do
+ {
+ while (*dirname == '/') /* skip leading slashes */
+ dirname++;
+ /* pathlen = strcspn(dirname, "/\n\t "); */
+ for (pathlen = 0 ;
+ dirname[pathlen]
+ && !isspace(dirname[pathlen]) && dirname[pathlen] != '/' ;
+ pathlen++)
+ ;
+
+ size = idr->size.l;
+ extent = idr->extent.l;
+
+ while (size > 0)
+ {
+ if (!iso9660_devread(ffi, extent, 0, ISO_SECTOR_SIZE, (char *)DIRREC))
+ {
+ errnum = ERR_FSYS_CORRUPT;
+ return 0;
+ }
+ extent++;
+
+ idr = (struct iso_directory_record *)DIRREC;
+ for (; idr->length.l > 0;
+ idr = (struct iso_directory_record *)((char *)idr +
idr->length.l) )
+ {
+ const char *name = idr->name;
+ unsigned int name_len = idr->name_len.l;
+
+ file_type = (idr->flags.l & 2) ? ISO_DIRECTORY : ISO_REGULAR;
+ if (name_len == 1)
+ {
+ if ((name[0] == 0) || /* self */
+ (name[0] == 1)) /* parent */
+ continue;
+ }
+ if (name_len > 2 && CHECK2(name + name_len - 2, ';', '1'))
+ {
+ name_len -= 2; /* truncate trailing file version */
+ if (name_len > 1 && name[name_len - 1] == '.')
+ name_len--; /* truncate trailing dot */
+ }
+
+ /*
+ * Parse Rock-Ridge extension
+ */
+ rr_len = (idr->length.l - idr->name_len.l
+ - sizeof(struct iso_directory_record)
+ + sizeof(idr->name));
+ rr_ptr.ptr = ((unsigned char *)idr + idr->name_len.l
+ + sizeof(struct iso_directory_record)
+ - sizeof(idr->name));
+ if (rr_ptr.i & 1)
+ rr_ptr.i++, rr_len--;
+ ce_ptr = NULL;
+ rr_flag = RR_FLAG_NM | RR_FLAG_PX /*| RR_FLAG_SL*/;
+
+ while (rr_len >= 4)
+ {
+ if (rr_ptr.rr->version != 1)
+ {
+#ifndef STAGE1_5
+ if (debug)
+ printf(
+ "Non-supported version (%d) RockRidge chunk "
+ "`%c%c'\n", rr_ptr.rr->version,
+ rr_ptr.rr->signature & 0xFF,
+ rr_ptr.rr->signature >> 8);
+#endif
+ }
+ else
+ {
+ switch (rr_ptr.rr->signature)
+ {
+ case RRMAGIC('R', 'R'):
+ if ( rr_ptr.rr->len >= (4+sizeof(struct RR)))
+ rr_flag &= rr_ptr.rr->u.rr.flags.l;
+ break;
+ case RRMAGIC('N', 'M'):
+ name = rr_ptr.rr->u.nm.name;
+ name_len = rr_ptr.rr->len - (4+sizeof(struct NM));
+ rr_flag &= ~RR_FLAG_NM;
+ break;
+ case RRMAGIC('P', 'X'):
+ if (rr_ptr.rr->len >= (4+sizeof(struct PX)))
+ {
+ file_type = ((rr_ptr.rr->u.px.mode.l &
POSIX_S_IFMT)
+ == POSIX_S_IFREG
+ ? ISO_REGULAR
+ : ((rr_ptr.rr->u.px.mode.l &
POSIX_S_IFMT)
+ == POSIX_S_IFDIR
+ ? ISO_DIRECTORY : ISO_OTHER));
+ rr_flag &= ~RR_FLAG_PX;
+ }
+ break;
+ case RRMAGIC('C', 'E'):
+ if (rr_ptr.rr->len >= (4+sizeof(struct CE)))
+ ce_ptr = rr_ptr.rr;
+ break;
+#if 0 // RockRidge symlinks are not supported yet
+ case RRMAGIC('S', 'L'):
+ {
+ int slen;
+ unsigned char rootflag, prevflag;
+ char *rpnt = NAME_BUF+1024;
+ struct SL_component *slp;
+
+ slen = rr_ptr.rr->len - (4+1);
+ slp = &rr_ptr.rr->u.sl.link;
+ while (slen > 1)
+ {
+ rootflag = 0;
+ switch (slp->flags.l)
+ {
+ case 0:
+ memcpy(rpnt, slp->text, slp->len);
+ rpnt += slp->len;
+ break;
+ case 4:
+ *rpnt++ = '.';
+ /* fallthru */
+ case 2:
+ *rpnt++ = '.';
+ break;
+ case 8:
+ rootflag = 1;
+ *rpnt++ = '/';
+ break;
+ default:
+ printf("Symlink component flag not
implemented (%d)\n",
+ slp->flags.l);
+ slen = 0;
+ break;
+ }
+ slen -= slp->len + 2;
+ prevflag = slp->flags.l;
+ slp = (struct SL_component *) ((char *) slp +
slp->len + 2);
+
+ if (slen < 2)
+ {
+ /*
+ * If there is another SL record, and this
component
+ * record isn't continued, then add a slash.
+ */
+ if ((!rootflag) && (rr_ptr.rr->u.sl.flags.l
& 1) && !(prevflag & 1))
+ *rpnt++='/';
+ break;
+ }
+
+ /*
+ * If this component record isn't continued,
then append a '/'.
+ */
+ if (!rootflag && !(prevflag & 1))
+ *rpnt++ = '/';
+ }
+ *rpnt++ = '\0';
+ grub_putstr(NAME_BUF+1024);// debug print!
+ }
+ rr_flag &= ~RR_FLAG_SL;
+ break;
+#endif
+ default:
+ break;
+ }
+ }
+ if (!rr_flag)
+ /*
+ * There is no more extension we expects...
+ */
+ break;
+
+ rr_len -= rr_ptr.rr->len;
+ rr_ptr.ptr += rr_ptr.rr->len;
+ if (rr_len < 4 && ce_ptr != NULL)
+ {
+ /* preserve name before loading new extent. */
+ if( RRCONT_BUF <= (unsigned char *)name
+ && (unsigned char *)name < RRCONT_BUF +
ISO_SECTOR_SIZE )
+ {
+ memcpy(NAME_BUF, name, name_len);
+ name = NAME_BUF;
+ }
+ rr_ptr.ptr = RRCONT_BUF + ce_ptr->u.ce.offset.l;
+ rr_len = ce_ptr->u.ce.size.l;
+ if (!iso9660_devread(ffi, ce_ptr->u.ce.extent.l, 0,
ISO_SECTOR_SIZE, RRCONT_BUF))
+ {
+ errnum = 0; /* this is not fatal. */
+ break;
+ }
+ ce_ptr = NULL;
+ }
+ } /* rr_len >= 4 */
+
+ filemax = MAXINT;
+ if (name_len >= pathlen
+ && !memcmp(name, dirname, pathlen))
+ {
+ if (dirname[pathlen] == '/' || !print_possibilities)
+ {
+ /*
+ * DIRNAME is directory component of pathname,
+ * or we are to open a file.
+ */
+ if (pathlen == name_len)
+ {
+ if (dirname[pathlen] == '/')
+ {
+ if (file_type != ISO_DIRECTORY)
+ {
+ errnum = ERR_BAD_FILETYPE;
+ return 0;
+ }
+ goto next_dir_level;
+ }
+ if (file_type != ISO_REGULAR)
+ {
+ errnum = ERR_BAD_FILETYPE;
+ return 0;
+ }
+ INODE->file_start = idr->extent.l;
+ filepos = 0;
+ filemax = idr->size.l;
+ return 1;
+ }
+ }
+ else /* Completion */
+ {
+#ifndef STAGE1_5
+ if (print_possibilities > 0)
+ print_possibilities = -print_possibilities;
+ memcpy(NAME_BUF, name, name_len);
+ NAME_BUF[name_len] = '\0';
+ print_a_completion (NAME_BUF);
+#endif
+ }
+ }
+ } /* for */
+
+ size -= ISO_SECTOR_SIZE;
+ } /* size>0 */
+
+ if (dirname[pathlen] == '/' || print_possibilities >= 0)
+ {
+ errnum = ERR_FILE_NOT_FOUND;
+ return 0;
+ }
+
+ next_dir_level:
+ dirname += pathlen;
+
+ } while (*dirname == '/');
+
+ return 1;
+}
+
+int
+iso9660_read (fsi_file_t *ffi, char *buf, int len)
+{
+ int sector, blkoffset, size, ret;
+
+ if (INODE->file_start == 0)
+ return 0;
+
+ ret = 0;
+ blkoffset = filepos & (ISO_SECTOR_SIZE - 1);
+ sector = filepos >> ISO_SECTOR_BITS;
+ while (len > 0)
+ {
+ size = ISO_SECTOR_SIZE - blkoffset;
+ if (size > len)
+ size = len;
+
+ disk_read_func = disk_read_hook;
+
+ if (!iso9660_devread(ffi, INODE->file_start + sector, blkoffset, size,
buf))
+ return 0;
+
+ disk_read_func = NULL;
+
+ len -= size;
+ buf += size;
+ ret += size;
+ filepos += size;
+ sector++;
+ blkoffset = 0;
+ }
+
+ return ret;
+}
+
+fsi_plugin_ops_t *
+fsi_init_plugin(int version, fsi_plugin_t *fp, const char **name)
+{
+ static fsig_plugin_ops_t ops = {
+ FSIMAGE_PLUGIN_VERSION,
+ .fpo_mount = iso9660_mount,
+ .fpo_dir = iso9660_dir,
+ .fpo_read = iso9660_read
+ };
+
+ *name = "iso9660";
+ return (fsig_init(fp, &ops));
+}
diff -r bca284f67702 -r fe3e024e38f8 tools/libfsimage/iso9660/iso9660.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/libfsimage/iso9660/iso9660.h Tue Feb 20 14:54:04 2007 -0800
@@ -0,0 +1,219 @@
+/*
+ * ISO 9660 filesystem backend for GRUB (GRand Unified Bootloader)
+ * including Rock Ridge Extensions support
+ *
+ * Copyright (C) 1998, 1999 Kousuke Takai <tak@xxxxxxxxxxxxxxxxx>
+ *
+ * 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.
+ */
+/*
+ * References:
+ * linux/fs/isofs/rock.[ch]
+ * mkisofs-1.11.1/diag/isoinfo.c
+ * mkisofs-1.11.1/iso9660.h
+ * (all are written by Eric Youngdale)
+ */
+
+#ifndef _ISO9660_H_
+#define _ISO9660_H_
+
+#define ISO_SECTOR_BITS (11)
+#define ISO_SECTOR_SIZE (1<<ISO_SECTOR_BITS)
+
+#define ISO_REGULAR 1 /* regular file */
+#define ISO_DIRECTORY 2 /* directory */
+#define ISO_OTHER 0 /* other file (with Rock Ridge) */
+
+#define RR_FLAG_PX 0x01 /* have POSIX file attributes */
+#define RR_FLAG_PN 0x02 /* POSIX devices */
+#define RR_FLAG_SL 0x04 /* Symbolic link */
+#define RR_FLAG_NM 0x08 /* have alternate file name */
+#define RR_FLAG_CL 0x10 /* Child link */
+#define RR_FLAG_PL 0x20 /* Parent link */
+#define RR_FLAG_RE 0x40 /* Relocation directory */
+#define RR_FLAG_TF 0x80 /* Timestamps */
+
+/* POSIX file attributes for Rock Ridge extensions */
+#define POSIX_S_IFMT 0xF000
+#define POSIX_S_IFREG 0x8000
+#define POSIX_S_IFDIR 0x4000
+
+/* volume descriptor types */
+#define ISO_VD_PRIMARY 1
+#define ISO_VD_END 255
+
+#define ISO_STANDARD_ID "CD001"
+
+#ifndef ASM_FILE
+
+#ifndef __sun
+#ifndef __BIT_TYPES_DEFINED__
+typedef int int8_t __attribute__((mode(QI)));
+typedef unsigned int u_int8_t __attribute__((mode(QI)));
+typedef int int16_t __attribute__((mode(HI)));
+typedef unsigned int u_int16_t __attribute__((mode(HI)));
+typedef int int32_t __attribute__((mode(SI)));
+typedef unsigned int u_int32_t __attribute__((mode(SI)));
+#endif
+#else
+#ifndef GRUB_UTIL
+typedef char int8_t;
+typedef short int16_t;
+typedef int int32_t;
+#endif /* ! GRUB_UTIL */
+typedef unsigned char u_int8_t;
+typedef unsigned short u_int16_t;
+typedef unsigned int u_int32_t;
+#endif /* __sun */
+
+typedef union {
+ u_int8_t l,b;
+} iso_8bit_t;
+
+struct __iso_16bit {
+ u_int16_t l, b;
+} __attribute__ ((packed));
+typedef struct __iso_16bit iso_16bit_t;
+
+struct __iso_32bit {
+ u_int32_t l, b;
+} __attribute__ ((packed));
+typedef struct __iso_32bit iso_32bit_t;
+
+typedef u_int8_t iso_date_t[7];
+
+struct iso_directory_record {
+ iso_8bit_t length;
+ iso_8bit_t ext_attr_length;
+ iso_32bit_t extent;
+ iso_32bit_t size;
+ iso_date_t date;
+ iso_8bit_t flags;
+ iso_8bit_t file_unit_size;
+ iso_8bit_t interleave;
+ iso_16bit_t volume_seq_number;
+ iso_8bit_t name_len;
+ u_int8_t name[1];
+} __attribute__ ((packed));
+
+struct iso_primary_descriptor {
+ iso_8bit_t type;
+ u_int8_t id[5];
+ iso_8bit_t version;
+ u_int8_t _unused1[1];
+ u_int8_t system_id[32];
+ u_int8_t volume_id[32];
+ u_int8_t _unused2[8];
+ iso_32bit_t volume_space_size;
+ u_int8_t _unused3[32];
+ iso_16bit_t volume_set_size;
+ iso_16bit_t volume_seq_number;
+ iso_16bit_t logical_block_size;
+ iso_32bit_t path_table_size;
+ u_int8_t type_l_path_table[4];
+ u_int8_t opt_type_l_path_table[4];
+ u_int8_t type_m_path_table[4];
+ u_int8_t opt_type_m_path_table[4];
+ struct iso_directory_record root_directory_record;
+ u_int8_t volume_set_id[128];
+ u_int8_t publisher_id[128];
+ u_int8_t preparer_id[128];
+ u_int8_t application_id[128];
+ u_int8_t copyright_file_id[37];
+ u_int8_t abstract_file_id[37];
+ u_int8_t bibliographic_file_id[37];
+ u_int8_t creation_date[17];
+ u_int8_t modification_date[17];
+ u_int8_t expiration_date[17];
+ u_int8_t effective_date[17];
+ iso_8bit_t file_structure_version;
+ u_int8_t _unused4[1];
+ u_int8_t application_data[512];
+ u_int8_t _unused5[653];
+} __attribute__ ((packed));
+
+struct rock_ridge {
+ u_int16_t signature;
+ u_int8_t len;
+ u_int8_t version;
+ union {
+ struct SP {
+ u_int16_t magic;
+ u_int8_t skip;
+ } sp;
+ struct CE {
+ iso_32bit_t extent;
+ iso_32bit_t offset;
+ iso_32bit_t size;
+ } ce;
+ struct ER {
+ u_int8_t len_id;
+ u_int8_t len_des;
+ u_int8_t len_src;
+ u_int8_t ext_ver;
+ u_int8_t data[0];
+ } er;
+ struct RR {
+ iso_8bit_t flags;
+ } rr;
+ struct PX {
+ iso_32bit_t mode;
+ iso_32bit_t nlink;
+ iso_32bit_t uid;
+ iso_32bit_t gid;
+ } px;
+ struct PN {
+ iso_32bit_t dev_high;
+ iso_32bit_t dev_low;
+ } pn;
+ struct SL {
+ iso_8bit_t flags;
+ struct SL_component {
+ iso_8bit_t flags;
+ u_int8_t len;
+ u_int8_t text[0];
+ } link;
+ } sl;
+ struct NM {
+ iso_8bit_t flags;
+ u_int8_t name[0];
+ } nm;
+ struct CL {
+ iso_32bit_t location;
+ } cl;
+ struct PL {
+ iso_32bit_t location;
+ } pl;
+ struct TF {
+ iso_8bit_t flags;
+ iso_date_t times[0];
+ } tf;
+ } u;
+} __attribute__ ((packed));
+
+typedef union RR_ptr {
+ struct rock_ridge *rr;
+ char *ptr;
+ int i;
+} RR_ptr_t;
+
+#define RRMAGIC(c1, c2) ((c1)|(c2) << 8)
+
+#define CHECK2(ptr, c1, c2) \
+ (*(unsigned short *)(ptr) == (((c1) | (c2) << 8) & 0xFFFF))
+
+#endif /* !ASM_FILE */
+
+#endif /* _ISO9660_H_ */
diff -r bca284f67702 -r fe3e024e38f8 tools/libfsimage/reiserfs/fsys_reiserfs.c
--- a/tools/libfsimage/reiserfs/fsys_reiserfs.c Wed Feb 21 10:13:40 2007 +0000
+++ b/tools/libfsimage/reiserfs/fsys_reiserfs.c Tue Feb 20 14:54:04 2007 -0800
@@ -363,83 +363,6 @@ struct fsys_reiser_info
#define JOURNAL_START ((__u32 *) (INFO + 1))
#define JOURNAL_END ((__u32 *) (FSYS_BUF + FSYS_BUFLEN))
-#if defined(__i386__) || defined(__x86_64__)
-
-#ifdef __amd64
-#define BSF "bsfq"
-#else
-#define BSF "bsfl"
-#endif
-static __inline__ unsigned long
-grub_log2 (unsigned long word)
-{
- __asm__ (BSF " %1,%0"
- : "=r" (word)
- : "r" (word));
- return word;
-}
-
-#elif defined(__ia64__)
-
-#if __GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
-# define ia64_popcnt(x) __builtin_popcountl(x)
-#else
-# define ia64_popcnt(x) \
- ({ \
- __u64 ia64_intri_res; \
- asm ("popcnt %0=%1" : "=r" (ia64_intri_res) : "r" (x)); \
- ia64_intri_res; \
- })
-#endif
-
-static __inline__ unsigned long
-grub_log2 (unsigned long word)
-{
- unsigned long result;
-
- result = ia64_popcnt((word - 1) & ~word);
- return result;
-}
-
-#elif defined(__powerpc__)
-
-#ifdef __powerpc64__
-#define PPC_CNTLZL "cntlzd"
-#else
-#define PPC_CNTLZL "cntlzw"
-#endif
-#define BITS_PER_LONG (sizeof(long) * 8)
-
-static __inline__ int
-__ilog2(unsigned long x)
-{
- int lz;
-
- asm (PPC_CNTLZL " %0,%1" : "=r" (lz) : "r" (x));
- return BITS_PER_LONG - 1 - lz;
-}
-
-static __inline__ unsigned long
-grub_log2 (unsigned long word)
-{
- return __ilog2(word & -word);
-}
-
-#else /* Unoptimized */
-
-static __inline__ unsigned long
-grub_log2 (unsigned long word)
-{
- unsigned long result = 0;
-
- while (!(word & 1UL))
- {
- result++;
- word >>= 1;
- }
- return result;
-}
-#endif
#define log2 grub_log2
static __inline__ int
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