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create_inode: move debugfs internal state back to debugfs
[tools/e2fsprogs.git] / debugfs / debugfs.c
index 3bb309f..9b38c08 100644 (file)
@@ -8,6 +8,7 @@
  * Modifications by Robert Sanders <gt8134b@prism.gatech.edu>
  */
 
+#include "config.h"
 #include <stdio.h>
 #include <unistd.h>
 #include <stdlib.h>
@@ -24,11 +25,7 @@ extern char *optarg;
 #include <errno.h>
 #endif
 #include <fcntl.h>
-#include <sys/types.h>
-#include <sys/stat.h>
 
-#include "et/com_err.h"
-#include "ss/ss.h"
 #include "debugfs.h"
 #include "uuid/uuid.h"
 #include "e2p/e2p.h"
@@ -38,12 +35,16 @@ extern char *optarg;
 #include "../version.h"
 #include "jfs_user.h"
 
-extern ss_request_table debug_cmds;
+#ifndef BUFSIZ
+#define BUFSIZ 8192
+#endif
+
 ss_request_table *extra_cmds;
 const char *debug_prog_name;
+int sci_idx;
 
-ext2_filsys    current_fs = NULL;
-ext2_ino_t     root, cwd;
+ext2_filsys    current_fs;
+ext2_ino_t     root, cwd;
 
 static void open_filesystem(char *device, int open_flags, blk64_t superblock,
                            blk64_t blocksize, int catastrophic,
@@ -78,6 +79,8 @@ static void open_filesystem(char *device, int open_flags, blk64_t superblock,
                        "opening read-only because of catastrophic mode");
                open_flags &= ~EXT2_FLAG_RW;
        }
+       if (catastrophic)
+               open_flags |= EXT2_FLAG_SKIP_MMP;
 
        retval = ext2fs_open(device, open_flags, superblock, blocksize,
                             unix_io_manager, &current_fs);
@@ -86,6 +89,7 @@ static void open_filesystem(char *device, int open_flags, blk64_t superblock,
                current_fs = NULL;
                return;
        }
+       current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
 
        if (catastrophic)
                com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
@@ -127,17 +131,21 @@ void do_open_filesys(int argc, char **argv)
        int     catastrophic = 0;
        blk64_t superblock = 0;
        blk64_t blocksize = 0;
-       int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
+       int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS; 
        char    *data_filename = 0;
 
        reset_getopt();
-       while ((c = getopt (argc, argv, "iwfecb:s:d:")) != EOF) {
+       while ((c = getopt (argc, argv, "iwfecb:s:d:D")) != EOF) {
                switch (c) {
                case 'i':
                        open_flags |= EXT2_FLAG_IMAGE_FILE;
                        break;
                case 'w':
+#ifdef READ_ONLY
+                       goto print_usage;
+#else
                        open_flags |= EXT2_FLAG_RW;
+#endif /* READ_ONLY */
                        break;
                case 'f':
                        open_flags |= EXT2_FLAG_FORCE;
@@ -151,6 +159,9 @@ void do_open_filesys(int argc, char **argv)
                case 'd':
                        data_filename = optarg;
                        break;
+               case 'D':
+                       open_flags |= EXT2_FLAG_DIRECT_IO;
+                       break;
                case 'b':
                        blocksize = parse_ulong(optarg, argv[0],
                                                "block size", &err);
@@ -158,8 +169,8 @@ void do_open_filesys(int argc, char **argv)
                                return;
                        break;
                case 's':
-                       superblock = parse_ulong(optarg, argv[0],
-                                                "superblock number", &err);
+                       err = strtoblk(argv[0], optarg,
+                                      "superblock block number", &superblock);
                        if (err)
                                return;
                        break;
@@ -179,7 +190,11 @@ void do_open_filesys(int argc, char **argv)
 
 print_usage:
        fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
-               "[-c] [-w] <device>\n", argv[0]);
+               "[-d image_filename] [-c] [-i] [-f] [-e] [-D] "
+#ifndef READ_ONLY
+               "[-w] "
+#endif
+               "<device>\n", argv[0]);
 }
 
 void do_lcd(int argc, char **argv)
@@ -245,21 +260,23 @@ void do_close_filesys(int argc, char **argv)
        close_filesystem();
 }
 
+#ifndef READ_ONLY
 void do_init_filesys(int argc, char **argv)
 {
        struct ext2_super_block param;
        errcode_t       retval;
        int             err;
+       blk64_t         blocks;
 
        if (common_args_process(argc, argv, 3, 3, "initialize",
-                               "<device> <blocksize>", CHECK_FS_NOTOPEN))
+                               "<device> <blocks>", CHECK_FS_NOTOPEN))
                return;
 
        memset(&param, 0, sizeof(struct ext2_super_block));
-       ext2fs_blocks_count_set(&param, parse_ulong(argv[2], argv[0],
-                                                   "blocks count", &err));
+       err = strtoblk(argv[0], argv[2], "blocks count", &blocks);
        if (err)
                return;
+       ext2fs_blocks_count_set(&param, blocks);
        retval = ext2fs_initialize(argv[1], 0, &param,
                                   unix_io_manager, &current_fs);
        if (retval) {
@@ -289,11 +306,12 @@ static void print_features(struct ext2_super_block * s, FILE *f)
                fputs("(none)", f);
        fputs("\n", f);
 }
+#endif /* READ_ONLY */
 
 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
                          const char *str, int *first, FILE *f)
 {
-       if (ext2fs_bg_flag_test(fs, group, mask)) {
+       if (ext2fs_bg_flags_test(fs, group, mask)) {
                if (*first) {
                        fputs("           [", f);
                        *first = 0;
@@ -305,6 +323,7 @@ static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
 
 void do_show_super_stats(int argc, char *argv[])
 {
+       const char *units ="block";
        dgrp_t  i;
        FILE    *out;
        int     c, header_only = 0;
@@ -327,6 +346,10 @@ void do_show_super_stats(int argc, char *argv[])
                return;
        out = open_pager();
 
+       if (EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
+                                      EXT4_FEATURE_RO_COMPAT_BIGALLOC))
+               units = "cluster";
+
        list_super2(current_fs->super, out);
        for (i=0; i < current_fs->group_desc_count; i++)
                numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
@@ -337,21 +360,20 @@ void do_show_super_stats(int argc, char *argv[])
                return;
        }
 
-       gdt_csum = EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
-                                             EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
+       gdt_csum = ext2fs_has_group_desc_csum(current_fs);
        for (i = 0; i < current_fs->group_desc_count; i++) {
                fprintf(out, " Group %2d: block bitmap at %llu, "
                        "inode bitmap at %llu, "
                        "inode table at %llu\n"
-                       "           %u free %s, "
+                       "           %u free %s%s, "
                        "%u free %s, "
                        "%u used %s%s",
                        i, ext2fs_block_bitmap_loc(current_fs, i),
                        ext2fs_inode_bitmap_loc(current_fs, i),
                        ext2fs_inode_table_loc(current_fs, i),
-                       ext2fs_bg_free_blocks_count(current_fs, i),
+                       ext2fs_bg_free_blocks_count(current_fs, i), units,
                        ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
-                       "blocks" : "block",
+                       "s" : "",
                        ext2fs_bg_free_inodes_count(current_fs, i),
                        ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
                        "inodes" : "inode",
@@ -382,6 +404,7 @@ print_usage:
        fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
 }
 
+#ifndef READ_ONLY
 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
                      char **argv EXT2FS_ATTR((unused)))
 {
@@ -396,6 +419,7 @@ void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
                current_fs->super->s_state &= ~EXT2_VALID_FS;
        ext2fs_mark_super_dirty(current_fs);
 }
+#endif /* READ_ONLY */
 
 struct list_blocks_struct {
        FILE            *f;
@@ -506,34 +530,45 @@ static void internal_dump_inode_extra(FILE *out,
                                inode->i_extra_isize);
                return;
        }
-       storage_size = EXT2_INODE_SIZE(current_fs->super) -
-                       EXT2_GOOD_OLD_INODE_SIZE -
-                       inode->i_extra_isize;
-       magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
-                       inode->i_extra_isize);
-       if (*magic == EXT2_EXT_ATTR_MAGIC) {
-               fprintf(out, "Extended attributes stored in inode body: \n");
-               end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
-               start = (char *) magic + sizeof(__u32);
-               entry = (struct ext2_ext_attr_entry *) start;
-               while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
-                       struct ext2_ext_attr_entry *next =
-                               EXT2_EXT_ATTR_NEXT(entry);
-                       if (entry->e_value_size > storage_size ||
-                                       (char *) next >= end) {
-                               fprintf(out, "invalid EA entry in inode\n");
-                               return;
-                       }
-                       fprintf(out, "  ");
-                       dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
-                                         entry->e_name_len);
-                       fprintf(out, " = \"");
-                       dump_xattr_string(out, start + entry->e_value_offs,
-                                               entry->e_value_size);
-                       fprintf(out, "\" (%u)\n", entry->e_value_size);
-                       entry = next;
-               }
-       }
+}
+
+/* Dump extended attributes */
+static int dump_attr(char *name, char *value, size_t value_len, void *data)
+{
+       FILE *out = data;
+
+       fprintf(out, "  ");
+       dump_xattr_string(out, name, strlen(name));
+       fprintf(out, " = \"");
+       dump_xattr_string(out, value, value_len);
+       fprintf(out, "\" (%zu)\n", value_len);
+
+       return 0;
+}
+
+static void dump_inode_attributes(FILE *out, ext2_ino_t ino)
+{
+       struct ext2_xattr_handle *h;
+       errcode_t err;
+
+       err = ext2fs_xattrs_open(current_fs, ino, &h);
+       if (err)
+               return;
+
+       err = ext2fs_xattrs_read(h);
+       if (err)
+               goto out;
+
+       if (ext2fs_xattrs_count(h) == 0)
+               goto out;
+
+       fprintf(out, "Extended attributes:\n");
+       err = ext2fs_xattrs_iterate(h, dump_attr, out);
+       if (err)
+               goto out;
+
+out:
+       err = ext2fs_xattrs_close(&h);
 }
 
 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
@@ -632,11 +667,8 @@ static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
                                continue;
                        }
 
-                       fprintf(f, "%s(NODE #%d, %lld-%lld, blk %lld)",
-                               printed ? ", " : "",
-                               info.curr_entry,
-                               extent.e_lblk,
-                               extent.e_lblk + (extent.e_len - 1),
+                       fprintf(f, "%s(ETB%d):%lld",
+                               printed ? ", " : "", info.curr_level,
                                extent.e_pblk);
                        printed = 1;
                        continue;
@@ -665,20 +697,20 @@ static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
                        continue;
                else if (extent.e_len == 1)
                        fprintf(f,
-                               "%s(%lld%s): %lld",
+                               "%s(%lld%s):%lld",
                                printed ? ", " : "",
                                extent.e_lblk,
                                extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
-                               " [uninit]" : "",
+                               "[u]" : "",
                                extent.e_pblk);
                else
                        fprintf(f,
-                               "%s(%lld-%lld%s): %lld-%lld",
+                               "%s(%lld-%lld%s):%lld-%lld",
                                printed ? ", " : "",
                                extent.e_lblk,
                                extent.e_lblk + (extent.e_len - 1),
                                extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
-                                       " [uninit]" : "",
+                                       "[u]" : "",
                                extent.e_pblk,
                                extent.e_pblk + (extent.e_len - 1));
                printed = 1;
@@ -687,6 +719,16 @@ static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
                fprintf(f, "\n");
 }
 
+static void dump_inline_data(FILE *out, const char *prefix, ext2_ino_t inode_num)
+{
+       errcode_t retval;
+       size_t size;
+
+       retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
+       if (!retval)
+               fprintf(out, "%sSize of inline data: %d", prefix, size);
+}
+
 void internal_dump_inode(FILE *out, const char *prefix,
                         ext2_ino_t inode_num, struct ext2_inode *inode,
                         int do_dump_blocks)
@@ -722,12 +764,9 @@ void internal_dump_inode(FILE *out, const char *prefix,
        }
        fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
                prefix, inode_uid(*inode), inode_gid(*inode));
-       if (LINUX_S_ISREG(inode->i_mode)) {
-               unsigned long long i_size = (inode->i_size |
-                                   ((unsigned long long)inode->i_size_high << 32));
-
-               fprintf(out, "%llu\n", i_size);
-       } else
+       if (LINUX_S_ISREG(inode->i_mode))
+               fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
+       else
                fprintf(out, "%d\n", inode->i_size);
        if (os == EXT2_OS_HURD)
                fprintf(out,
@@ -787,6 +826,20 @@ void internal_dump_inode(FILE *out, const char *prefix,
        if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
                internal_dump_inode_extra(out, prefix, inode_num,
                                          (struct ext2_inode_large *) inode);
+       dump_inode_attributes(out, inode_num);
+       if (current_fs->super->s_creator_os == EXT2_OS_LINUX &&
+           current_fs->super->s_feature_ro_compat &
+               EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) {
+               __u32 crc = inode->i_checksum_lo;
+               if (is_large_inode &&
+                   large_inode->i_extra_isize >=
+                               (offsetof(struct ext2_inode_large,
+                                         i_checksum_hi) -
+                                EXT2_GOOD_OLD_INODE_SIZE))
+                       crc |= ((__u32)large_inode->i_checksum_hi) << 16;
+               fprintf(out, "Inode checksum: 0x%08x\n", crc);
+       }
+
        if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
                fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
                        (int) inode->i_size, (char *)inode->i_block);
@@ -809,7 +862,9 @@ void internal_dump_inode(FILE *out, const char *prefix,
        } else if (do_dump_blocks) {
                if (inode->i_flags & EXT4_EXTENTS_FL)
                        dump_extents(out, prefix, inode_num,
-                                    DUMP_LEAF_EXTENTS, 0, 0);
+                                    DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
+               else if (inode->i_flags & EXT4_INLINE_DATA_FL)
+                       dump_inline_data(out, prefix, inode_num);
                else
                        dump_blocks(out, prefix, inode_num);
        }
@@ -855,7 +910,7 @@ void do_stat(int argc, char *argv[])
        return;
 }
 
-void do_dump_extents(int argc, char *argv[])
+void do_dump_extents(int argc, char **argv)
 {
        struct ext2_inode inode;
        ext2_ino_t      ino;
@@ -876,8 +931,7 @@ void do_dump_extents(int argc, char *argv[])
                }
        }
 
-       if (argc != optind+1) {
-       print_usage:
+       if (argc != optind + 1) {
                com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
                return;
        }
@@ -902,9 +956,7 @@ void do_dump_extents(int argc, char *argv[])
                return;
        }
 
-       logical_width = int_log10(((inode.i_size |
-                                   (__u64) inode.i_size_high << 32) +
-                                  current_fs->blocksize - 1) /
+       logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
                                  current_fs->blocksize) + 1;
        if (logical_width < 5)
                logical_width = 5;
@@ -918,6 +970,34 @@ void do_dump_extents(int argc, char *argv[])
        return;
 }
 
+static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
+                            blk64_t *blocknr,
+                            e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
+                            blk64_t ref_block EXT2FS_ATTR((unused)),
+                            int ref_offset EXT2FS_ATTR((unused)),
+                            void *private EXT2FS_ATTR((unused)))
+{
+       printf("%llu ", *blocknr);
+       return 0;
+}
+
+void do_blocks(int argc, char *argv[])
+{
+       ext2_ino_t      inode;
+
+       if (check_fs_open(argv[0]))
+               return;
+
+       if (common_inode_args_process(argc, argv, &inode, 0)) {
+               return;
+       }
+
+       ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
+                             print_blocks_proc, NULL);
+       fputc('\n', stdout);
+       return;
+}
+
 void do_chroot(int argc, char *argv[])
 {
        ext2_ino_t inode;
@@ -934,6 +1014,7 @@ void do_chroot(int argc, char *argv[])
        root = inode;
 }
 
+#ifndef READ_ONLY
 void do_clri(int argc, char *argv[])
 {
        ext2_ino_t inode;
@@ -951,31 +1032,64 @@ void do_clri(int argc, char *argv[])
 
 void do_freei(int argc, char *argv[])
 {
-       ext2_ino_t inode;
+       unsigned int    len = 1;
+       int             err = 0;
+       ext2_ino_t      inode;
+
+       if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
+                               CHECK_FS_RW | CHECK_FS_BITMAPS))
+               return;
+       if (check_fs_read_write(argv[0]))
+               return;
 
-       if (common_inode_args_process(argc, argv, &inode,
-                                     CHECK_FS_RW | CHECK_FS_BITMAPS))
+       inode = string_to_inode(argv[1]);
+       if (!inode)
                return;
 
-       if (!ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
+       if (argc == 3) {
+               len = parse_ulong(argv[2], argv[0], "length", &err);
+               if (err)
+                       return;
+       }
+
+       if (len == 1 &&
+           !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
                com_err(argv[0], 0, "Warning: inode already clear");
-       ext2fs_unmark_inode_bitmap2(current_fs->inode_map,inode);
+       while (len-- > 0)
+               ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode++);
        ext2fs_mark_ib_dirty(current_fs);
 }
 
 void do_seti(int argc, char *argv[])
 {
-       ext2_ino_t inode;
+       unsigned int    len = 1;
+       int             err = 0;
+       ext2_ino_t      inode;
 
-       if (common_inode_args_process(argc, argv, &inode,
-                                     CHECK_FS_RW | CHECK_FS_BITMAPS))
+       if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
+                               CHECK_FS_RW | CHECK_FS_BITMAPS))
+               return;
+       if (check_fs_read_write(argv[0]))
                return;
 
-       if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
+       inode = string_to_inode(argv[1]);
+       if (!inode)
+               return;
+
+       if (argc == 3) {
+               len = parse_ulong(argv[2], argv[0], "length", &err);
+               if (err)
+                       return;
+       }
+
+       if ((len == 1) &&
+           ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
                com_err(argv[0], 0, "Warning: inode already set");
-       ext2fs_mark_inode_bitmap2(current_fs->inode_map,inode);
+       while (len-- > 0)
+               ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
        ext2fs_mark_ib_dirty(current_fs);
 }
+#endif /* READ_ONLY */
 
 void do_testi(int argc, char *argv[])
 {
@@ -990,6 +1104,7 @@ void do_testi(int argc, char *argv[])
                printf("Inode %u is not in use\n", inode);
 }
 
+#ifndef READ_ONLY
 void do_freeb(int argc, char *argv[])
 {
        blk64_t block;
@@ -1027,6 +1142,7 @@ void do_setb(int argc, char *argv[])
        }
        ext2fs_mark_bb_dirty(current_fs);
 }
+#endif /* READ_ONLY */
 
 void do_testb(int argc, char *argv[])
 {
@@ -1044,6 +1160,7 @@ void do_testb(int argc, char *argv[])
        }
 }
 
+#ifndef READ_ONLY
 static void modify_u8(char *com, const char *prompt,
                      const char *format, __u8 *val)
 {
@@ -1187,6 +1304,7 @@ void do_modify_inode(int argc, char *argv[])
        if (debugfs_write_inode(inode_num, &inode, argv[1]))
                return;
 }
+#endif /* READ_ONLY */
 
 void do_change_working_dir(int argc, char *argv[])
 {
@@ -1239,35 +1357,7 @@ void do_print_working_directory(int argc, char *argv[])
        return;
 }
 
-/*
- * Given a mode, return the ext2 file type
- */
-static int ext2_file_type(unsigned int mode)
-{
-       if (LINUX_S_ISREG(mode))
-               return EXT2_FT_REG_FILE;
-
-       if (LINUX_S_ISDIR(mode))
-               return EXT2_FT_DIR;
-
-       if (LINUX_S_ISCHR(mode))
-               return EXT2_FT_CHRDEV;
-
-       if (LINUX_S_ISBLK(mode))
-               return EXT2_FT_BLKDEV;
-
-       if (LINUX_S_ISLNK(mode))
-               return EXT2_FT_SYMLINK;
-
-       if (LINUX_S_ISFIFO(mode))
-               return EXT2_FT_FIFO;
-
-       if (LINUX_S_ISSOCK(mode))
-               return EXT2_FT_SOCK;
-
-       return 0;
-}
-
+#ifndef READ_ONLY
 static void make_link(char *sourcename, char *destname)
 {
        ext2_ino_t      ino;
@@ -1415,6 +1505,7 @@ void do_unlink(int argc, char *argv[])
 
        unlink_file_by_name(argv[1]);
 }
+#endif /* READ_ONLY */
 
 void do_find_free_block(int argc, char *argv[])
 {
@@ -1507,133 +1598,26 @@ void do_find_free_inode(int argc, char *argv[])
                printf("Free inode found: %u\n", free_inode);
 }
 
-static errcode_t copy_file(int fd, ext2_ino_t newfile)
-{
-       ext2_file_t     e2_file;
-       errcode_t       retval;
-       int             got;
-       unsigned int    written;
-       char            buf[8192];
-       char            *ptr;
-
-       retval = ext2fs_file_open(current_fs, newfile,
-                                 EXT2_FILE_WRITE, &e2_file);
-       if (retval)
-               return retval;
-
-       while (1) {
-               got = read(fd, buf, sizeof(buf));
-               if (got == 0)
-                       break;
-               if (got < 0) {
-                       retval = errno;
-                       goto fail;
-               }
-               ptr = buf;
-               while (got > 0) {
-                       retval = ext2fs_file_write(e2_file, ptr,
-                                                  got, &written);
-                       if (retval)
-                               goto fail;
-
-                       got -= written;
-                       ptr += written;
-               }
-       }
-       retval = ext2fs_file_close(e2_file);
-       return retval;
-
-fail:
-       (void) ext2fs_file_close(e2_file);
-       return retval;
-}
-
-
+#ifndef READ_ONLY
 void do_write(int argc, char *argv[])
 {
-       int             fd;
-       struct stat     statbuf;
-       ext2_ino_t      newfile;
        errcode_t       retval;
-       struct ext2_inode inode;
 
        if (common_args_process(argc, argv, 3, 3, "write",
                                "<native file> <new file>", CHECK_FS_RW))
                return;
 
-       fd = open(argv[1], O_RDONLY);
-       if (fd < 0) {
-               com_err(argv[1], errno, 0);
-               return;
-       }
-       if (fstat(fd, &statbuf) < 0) {
-               com_err(argv[1], errno, 0);
-               close(fd);
-               return;
-       }
-
-       retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
-       if (retval == 0) {
-               com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
-               close(fd);
-               return;
-       }
-
-       retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
-       if (retval) {
+       retval = do_write_internal(current_fs, cwd, argv[1], argv[2], root);
+       if (retval)
                com_err(argv[0], retval, 0);
-               close(fd);
-               return;
-       }
-       printf("Allocated inode: %u\n", newfile);
-       retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
-                            EXT2_FT_REG_FILE);
-       if (retval == EXT2_ET_DIR_NO_SPACE) {
-               retval = ext2fs_expand_dir(current_fs, cwd);
-               if (retval) {
-                       com_err(argv[0], retval, "while expanding directory");
-                       close(fd);
-                       return;
-               }
-               retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
-                                    EXT2_FT_REG_FILE);
-       }
-       if (retval) {
-               com_err(argv[2], retval, 0);
-               close(fd);
-               return;
-       }
-        if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile))
-               com_err(argv[0], 0, "Warning: inode already set");
-       ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
-       memset(&inode, 0, sizeof(inode));
-       inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
-       inode.i_atime = inode.i_ctime = inode.i_mtime =
-               current_fs->now ? current_fs->now : time(0);
-       inode.i_links_count = 1;
-       inode.i_size = statbuf.st_size;
-       if (current_fs->super->s_feature_incompat &
-           EXT3_FEATURE_INCOMPAT_EXTENTS)
-               inode.i_flags |= EXT4_EXTENTS_FL;
-       if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
-               close(fd);
-               return;
-       }
-       if (LINUX_S_ISREG(inode.i_mode)) {
-               retval = copy_file(fd, newfile);
-               if (retval)
-                       com_err("copy_file", retval, 0);
-       }
-       close(fd);
 }
 
 void do_mknod(int argc, char *argv[])
 {
        unsigned long   mode, major, minor;
-       ext2_ino_t      newfile;
        errcode_t       retval;
-       struct ext2_inode inode;
        int             filetype, nr;
+       struct stat     st;
 
        if (check_fs_open(argv[0]))
                return;
@@ -1642,116 +1626,52 @@ void do_mknod(int argc, char *argv[])
                com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
                return;
        }
+
        mode = minor = major = 0;
        switch (argv[2][0]) {
                case 'p':
-                       mode = LINUX_S_IFIFO;
-                       filetype = EXT2_FT_FIFO;
+                       st.st_mode = S_IFIFO;
                        nr = 3;
                        break;
                case 'c':
-                       mode = LINUX_S_IFCHR;
-                       filetype = EXT2_FT_CHRDEV;
+                       st.st_mode = S_IFCHR;
                        nr = 5;
                        break;
                case 'b':
-                       mode = LINUX_S_IFBLK;
-                       filetype = EXT2_FT_BLKDEV;
+                       st.st_mode = S_IFBLK;
                        nr = 5;
                        break;
                default:
-                       filetype = 0;
                        nr = 0;
        }
+
        if (nr == 5) {
                major = strtoul(argv[3], argv+3, 0);
                minor = strtoul(argv[4], argv+4, 0);
                if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
                        nr = 0;
        }
+
        if (argc != nr)
                goto usage;
-       if (check_fs_read_write(argv[0]))
-               return;
-       retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
-       if (retval) {
+
+       st.st_rdev = makedev(major, minor);
+       retval = do_mknod_internal(current_fs, cwd, argv[1], &st);
+       if (retval)
                com_err(argv[0], retval, 0);
-               return;
-       }
-       printf("Allocated inode: %u\n", newfile);
-       retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
-       if (retval == EXT2_ET_DIR_NO_SPACE) {
-               retval = ext2fs_expand_dir(current_fs, cwd);
-               if (retval) {
-                       com_err(argv[0], retval, "while expanding directory");
-                       return;
-               }
-               retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
-                                    filetype);
-       }
-       if (retval) {
-               com_err(argv[1], retval, 0);
-               return;
-       }
-        if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile))
-               com_err(argv[0], 0, "Warning: inode already set");
-       ext2fs_mark_inode_bitmap2(current_fs->inode_map, newfile);
-       ext2fs_mark_ib_dirty(current_fs);
-       memset(&inode, 0, sizeof(inode));
-       inode.i_mode = mode;
-       inode.i_atime = inode.i_ctime = inode.i_mtime =
-               current_fs->now ? current_fs->now : time(0);
-       if ((major < 256) && (minor < 256)) {
-               inode.i_block[0] = major*256+minor;
-               inode.i_block[1] = 0;
-       } else {
-               inode.i_block[0] = 0;
-               inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
-       }
-       inode.i_links_count = 1;
-       if (debugfs_write_new_inode(newfile, &inode, argv[0]))
-               return;
 }
 
 void do_mkdir(int argc, char *argv[])
 {
-       char    *cp;
-       ext2_ino_t      parent;
-       char    *name;
        errcode_t retval;
 
        if (common_args_process(argc, argv, 2, 2, "mkdir",
                                "<filename>", CHECK_FS_RW))
                return;
 
-       cp = strrchr(argv[1], '/');
-       if (cp) {
-               *cp = 0;
-               parent = string_to_inode(argv[1]);
-               if (!parent) {
-                       com_err(argv[1], ENOENT, 0);
-                       return;
-               }
-               name = cp+1;
-       } else {
-               parent = cwd;
-               name = argv[1];
-       }
-
-try_again:
-       retval = ext2fs_mkdir(current_fs, parent, 0, name);
-       if (retval == EXT2_ET_DIR_NO_SPACE) {
-               retval = ext2fs_expand_dir(current_fs, parent);
-               if (retval) {
-                       com_err(argv[0], retval, "while expanding directory");
-                       return;
-               }
-               goto try_again;
-       }
-       if (retval) {
-               com_err("ext2fs_mkdir", retval, 0);
-               return;
-       }
+       retval = do_mkdir_internal(current_fs, cwd, argv[1], NULL, root);
+       if (retval)
+               com_err(argv[0], retval, 0);
 
 }
 
@@ -1777,11 +1697,10 @@ static void kill_file_by_inode(ext2_ino_t inode)
        inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
        if (debugfs_write_inode(inode, &inode_buf, 0))
                return;
-       if (!ext2fs_inode_has_valid_blocks(&inode_buf))
-               return;
-
-       ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
-                             release_blocks_proc, NULL);
+       if (ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf)) {
+               ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY,
+                                     NULL, release_blocks_proc, NULL);
+       }
        printf("\n");
        ext2fs_inode_alloc_stats2(current_fs, inode, -1,
                                  LINUX_S_ISDIR(inode_buf.i_mode));
@@ -1848,9 +1767,9 @@ static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
 
        if (dirent->inode == 0)
                return 0;
-       if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
+       if ((ext2fs_dirent_name_len(dirent) == 1) && (dirent->name[0] == '.'))
                return 0;
-       if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
+       if ((ext2fs_dirent_name_len(dirent) == 2) && (dirent->name[0] == '.') &&
            (dirent->name[1] == '.')) {
                rds->parent = dirent->inode;
                return 0;
@@ -1914,19 +1833,19 @@ void do_rmdir(int argc, char *argv[])
                        return;
        }
 }
+#endif /* READ_ONLY */
 
 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
                            char *argv[] EXT2FS_ATTR((unused)))
 {
-       FILE *out = stdout;
-
        if (current_fs)
-               fprintf(out, "Open mode: read-%s\n",
-                       current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
-       fprintf(out, "Filesystem in use: %s\n",
-               current_fs ? current_fs->device_name : "--none--");
+               printf("Open mode: read-%s\n",
+                      current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
+       printf("Filesystem in use: %s\n",
+              current_fs ? current_fs->device_name : "--none--");
 }
 
+#ifndef READ_ONLY
 void do_expand_dir(int argc, char *argv[])
 {
        ext2_ino_t inode;
@@ -1960,6 +1879,7 @@ void do_features(int argc, char *argv[])
        }
        print_features(current_fs->super, stdout);
 }
+#endif /* READ_ONLY */
 
 void do_bmap(int argc, char *argv[])
 {
@@ -1975,11 +1895,13 @@ void do_bmap(int argc, char *argv[])
        ino = string_to_inode(argv[1]);
        if (!ino)
                return;
-       blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
+       err = strtoblk(argv[0], argv[2], "logical block", &blk);
+       if (err)
+               return;
 
        errcode = ext2fs_bmap2(current_fs, ino, 0, 0, 0, blk, 0, &pblk);
        if (errcode) {
-               com_err("argv[0]", errcode,
+               com_err(argv[0], errcode,
                        "while mapping logical block %llu\n", blk);
                return;
        }
@@ -2017,6 +1939,7 @@ void do_imap(int argc, char *argv[])
 
 }
 
+#ifndef READ_ONLY
 void do_set_current_time(int argc, char *argv[])
 {
        time_t now;
@@ -2036,6 +1959,7 @@ void do_set_current_time(int argc, char *argv[])
                current_fs->now = now;
        }
 }
+#endif /* READ_ONLY */
 
 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
 {
@@ -2102,10 +2026,109 @@ void do_supported_features(int argc, char *argv[])
        }
 }
 
-static int source_file(const char *cmd_file, int sci_idx)
+#ifndef READ_ONLY
+void do_punch(int argc, char *argv[])
+{
+       ext2_ino_t      ino;
+       blk64_t         start, end;
+       int             err;
+       errcode_t       errcode;
+
+       if (common_args_process(argc, argv, 3, 4, argv[0],
+                               "<file> start_blk [end_blk]",
+                               CHECK_FS_RW | CHECK_FS_BITMAPS))
+               return;
+
+       ino = string_to_inode(argv[1]);
+       if (!ino)
+               return;
+       err = strtoblk(argv[0], argv[2], "logical block", &start);
+       if (err)
+               return;
+       if (argc == 4) {
+               err = strtoblk(argv[0], argv[3], "logical block", &end);
+               if (err)
+                       return;
+       } else
+               end = ~0;
+
+       errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
+
+       if (errcode) {
+               com_err(argv[0], errcode,
+                       "while truncating inode %u from %llu to %llu\n", ino,
+                       (unsigned long long) start, (unsigned long long) end);
+               return;
+       }
+}
+#endif /* READ_ONLY */
+
+void do_symlink(int argc, char *argv[])
+{
+       errcode_t       retval;
+
+       if (common_args_process(argc, argv, 3, 3, "symlink",
+                               "<filename> <target>", CHECK_FS_RW))
+               return;
+
+       retval = do_symlink_internal(current_fs, cwd, argv[1], argv[2], root);
+       if (retval)
+               com_err(argv[0], retval, 0);
+
+}
+
+void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
+{
+#if CONFIG_MMP
+       struct ext2_super_block *sb;
+       struct mmp_struct *mmp_s;
+       time_t t;
+       errcode_t retval = 0;
+
+       if (check_fs_open(argv[0]))
+               return;
+
+       sb  = current_fs->super;
+
+       if (current_fs->mmp_buf == NULL) {
+               retval = ext2fs_get_mem(current_fs->blocksize,
+                                       &current_fs->mmp_buf);
+               if (retval) {
+                       com_err(argv[0], retval, "allocating MMP buffer.\n");
+                       return;
+               }
+       }
+
+       mmp_s = current_fs->mmp_buf;
+
+       retval = ext2fs_mmp_read(current_fs, current_fs->super->s_mmp_block,
+                                current_fs->mmp_buf);
+       if (retval) {
+               com_err(argv[0], retval, "reading MMP block.\n");
+               return;
+       }
+
+       t = mmp_s->mmp_time;
+       fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
+       fprintf(stdout, "update_interval: %d\n",
+               current_fs->super->s_mmp_update_interval);
+       fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
+       fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
+       fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
+       fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
+       fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
+       fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
+       fprintf(stdout, "checksum: 0x%08x\n", mmp_s->mmp_checksum);
+#else
+       fprintf(stdout, "MMP is unsupported, please recompile with "
+                       "--enable-mmp\n");
+#endif
+}
+
+static int source_file(const char *cmd_file, int ss_idx)
 {
        FILE            *f;
-       char            buf[256];
+       char            buf[BUFSIZ];
        char            *cp;
        int             exit_status = 0;
        int             retval;
@@ -2133,22 +2156,29 @@ static int source_file(const char *cmd_file, int sci_idx)
                if (cp)
                        *cp = 0;
                printf("debugfs: %s\n", buf);
-               retval = ss_execute_line(sci_idx, buf);
+               retval = ss_execute_line(ss_idx, buf);
                if (retval) {
-                       ss_perror(sci_idx, retval, buf);
+                       ss_perror(ss_idx, retval, buf);
                        exit_status++;
                }
        }
+       if (f != stdin)
+               fclose(f);
        return exit_status;
 }
 
 int main(int argc, char **argv)
 {
        int             retval;
-       int             sci_idx;
-       const char      *usage = "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
+       const char      *usage = 
+               "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
+               "[-R request] [-V] ["
+#ifndef READ_ONLY
+               "[-w] "
+#endif
+               "[-c] device]";
        int             c;
-       int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
+       int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
        char            *request = 0;
        int             exit_status = 0;
        char            *cmd_file = 0;
@@ -2156,15 +2186,23 @@ int main(int argc, char **argv)
        blk64_t         blocksize = 0;
        int             catastrophic = 0;
        char            *data_filename = 0;
+#ifdef READ_ONLY
+       const char      *opt_string = "nicR:f:b:s:Vd:D";
+#else
+       const char      *opt_string = "niwcR:f:b:s:Vd:D";
+#endif
 
        if (debug_prog_name == 0)
+#ifdef READ_ONLY
+               debug_prog_name = "rdebugfs";
+#else
                debug_prog_name = "debugfs";
-
+#endif
        add_error_table(&et_ext2_error_table);
        fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
                 E2FSPROGS_VERSION, E2FSPROGS_DATE);
 
-       while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
+       while ((c = getopt (argc, argv, opt_string)) != EOF) {
                switch (c) {
                case 'R':
                        request = optarg;
@@ -2178,16 +2216,27 @@ int main(int argc, char **argv)
                case 'i':
                        open_flags |= EXT2_FLAG_IMAGE_FILE;
                        break;
+               case 'n':
+                       open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
+                       break;
+#ifndef READ_ONLY
                case 'w':
                        open_flags |= EXT2_FLAG_RW;
                        break;
+#endif
+               case 'D':
+                       open_flags |= EXT2_FLAG_DIRECT_IO;
+                       break;
                case 'b':
                        blocksize = parse_ulong(optarg, argv[0],
                                                "block size", 0);
                        break;
                case 's':
-                       superblock = parse_ulong(optarg, argv[0],
-                                                "superblock number", 0);
+                       retval = strtoblk(argv[0], optarg,
+                                         "superblock block number",
+                                         &superblock);
+                       if (retval)
+                               return 1;
                        break;
                case 'c':
                        catastrophic = 1;