debugfs: add a new command to list the orphan inodes

Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/debugfs/Makefile.in b/debugfs/Makefile.in
index 50a21e5..9b402f0 100644 (file)
--- a/debugfs/Makefile.in
+++ b/debugfs/Makefile.in
@@ -21,11 +21,11 @@ DEBUG_OBJS= debug_cmds.o debugfs.o util.o ncheck.o icheck.o ls.o \
        lsdel.o dump.o set_fields.o logdump.o htree.o unused.o e2freefrag.o \
        filefrag.o extent_cmds.o extent_inode.o zap.o create_inode.o \
        create_inode_libarchive.o quota.o xattrs.o journal.o revoke.o \
-       recovery.o do_journal.o
+       recovery.o do_journal.o do_orphan.o
 
 RO_DEBUG_OBJS= ro_debug_cmds.o ro_debugfs.o util.o ncheck.o icheck.o ls.o \
        lsdel.o logdump.o htree.o e2freefrag.o filefrag.o extent_cmds.o \
-       extent_inode.o quota.o xattrs.o
+       extent_inode.o quota.o xattrs.o do_orphan.o
 
 SRCS= debug_cmds.c $(srcdir)/debugfs.c $(srcdir)/util.c $(srcdir)/ls.c \
        $(srcdir)/ncheck.c $(srcdir)/icheck.c $(srcdir)/lsdel.c \
@@ -35,7 +35,8 @@ SRCS= debug_cmds.c $(srcdir)/debugfs.c $(srcdir)/util.c $(srcdir)/ls.c \
        $(srcdir)/../misc/create_inode.c \
        $(srcdir)/../misc/create_inode_libarchive.c $(srcdir)/xattrs.c \
        $(srcdir)/quota.c $(srcdir)/journal.c $(srcdir)/../e2fsck/revoke.c \
-       $(srcdir)/../e2fsck/recovery.c $(srcdir)/do_journal.c
+       $(srcdir)/../e2fsck/recovery.c $(srcdir)/do_journal.c \
+       $(srcdir)/do_orphan.c
 
 LIBS= $(LIBSUPPORT) $(LIBEXT2FS) $(LIBE2P) $(LIBSS) $(LIBCOM_ERR) $(LIBBLKID) \
        $(LIBUUID) $(LIBMAGIC) $(SYSLIBS) $(LIBARCHIVE)
@@ -367,9 +368,9 @@ create_inode.o: $(srcdir)/../misc/create_inode.c $(top_builddir)/lib/config.h \
  $(srcdir)/../misc/create_inode_libarchive.h
 create_inode_libarchive.o: $(srcdir)/../misc/create_inode_libarchive.c \
  $(top_builddir)/lib/config.h $(top_builddir)/lib/dirpaths.h \
- $(top_builddir)/lib/ext2fs/ext2_types.h $(srcdir)/../misc/create_inode.h \
- $(top_srcdir)/lib/et/com_err.h $(top_srcdir)/lib/e2p/e2p.h \
- $(top_srcdir)/lib/ext2fs/ext2_fs.h $(top_srcdir)/lib/ext2fs/ext2fs.h \
+ $(srcdir)/../misc/create_inode.h $(top_srcdir)/lib/et/com_err.h \
+ $(top_srcdir)/lib/e2p/e2p.h $(top_srcdir)/lib/ext2fs/ext2_fs.h \
+ $(top_builddir)/lib/ext2fs/ext2_types.h $(top_srcdir)/lib/ext2fs/ext2fs.h \
  $(top_srcdir)/lib/ext2fs/ext3_extents.h $(top_srcdir)/lib/ext2fs/ext2_io.h \
  $(top_builddir)/lib/ext2fs/ext2_err.h \
  $(top_srcdir)/lib/ext2fs/ext2_ext_attr.h $(top_srcdir)/lib/ext2fs/hashmap.h \
@@ -443,3 +444,14 @@ do_journal.o: $(srcdir)/do_journal.c $(top_builddir)/lib/config.h \
  $(top_srcdir)/lib/ext2fs/kernel-jbd.h $(top_srcdir)/lib/ext2fs/jfs_compat.h \
  $(top_srcdir)/lib/ext2fs/kernel-list.h $(top_srcdir)/lib/ext2fs/compiler.h \
  $(srcdir)/journal.h $(srcdir)/../e2fsck/jfs_user.h
+do_orphan.o: $(srcdir)/do_orphan.c $(top_builddir)/lib/config.h \
+ $(top_builddir)/lib/dirpaths.h $(srcdir)/debugfs.h $(top_srcdir)/lib/ss/ss.h \
+ $(top_builddir)/lib/ss/ss_err.h $(top_srcdir)/lib/et/com_err.h \
+ $(top_srcdir)/lib/ext2fs/ext2_fs.h $(top_builddir)/lib/ext2fs/ext2_types.h \
+ $(top_srcdir)/lib/ext2fs/ext2fs.h $(top_srcdir)/lib/ext2fs/ext3_extents.h \
+ $(top_srcdir)/lib/ext2fs/ext2_io.h $(top_builddir)/lib/ext2fs/ext2_err.h \
+ $(top_srcdir)/lib/ext2fs/ext2_ext_attr.h $(top_srcdir)/lib/ext2fs/hashmap.h \
+ $(top_srcdir)/lib/ext2fs/bitops.h $(srcdir)/../misc/create_inode.h \
+ $(top_srcdir)/lib/e2p/e2p.h $(top_srcdir)/lib/support/quotaio.h \
+ $(top_srcdir)/lib/support/dqblk_v2.h \
+ $(top_srcdir)/lib/support/quotaio_tree.h

diff --git a/debugfs/debug_cmds.ct b/debugfs/debug_cmds.ct
index 1ff6c9d..f23ec33 100644 (file)
--- a/debugfs/debug_cmds.ct
+++ b/debugfs/debug_cmds.ct
@@ -229,5 +229,8 @@ request do_journal_write, "Write a transaction to the journal",
 request do_journal_run, "Recover the journal",
        journal_run, jr;
 
+request do_orphan_inodes, "List the orphan inodes on the file system",
+       orphan_inodes, orphan;
+
 end;
 

diff --git a/debugfs/debugfs.8.in b/debugfs/debugfs.8.in
index 2066c0f..08f41fd 100644 (file)
--- a/debugfs/debugfs.8.in
+++ b/debugfs/debugfs.8.in
@@ -643,6 +643,9 @@ flag causes the file system to be opened in exclusive mode.  The
 options behave the same as the command-line options to
 .BR debugfs .
 .TP
+.B orphan_inodes
+List the orphan inodes in the file system.
+.TP
 .BI punch " filespec start_blk [end_blk]"
 Delete the blocks in the inode ranging from
 .I start_blk

diff --git a/debugfs/debugfs.h b/debugfs/debugfs.h
index 88d929c..cbeb6f6 100644 (file)
--- a/debugfs/debugfs.h
+++ b/debugfs/debugfs.h
@@ -186,6 +186,9 @@ extern void do_journal_open(int argc, ss_argv_t argv, int sci_idx, void *infop);
 extern void do_journal_close(int argc, ss_argv_t argv, int sci_idx, void *infop);
 extern void do_journal_run(int argc, ss_argv_t argv, int sci_idx, void *infop);
 
+/* orphan.c */
+extern void do_orphan_inodes(int argc, ss_argv_t argv, int sci_idx, void *infop);
+
 /* quota.c */
 extern void do_list_quota(int argc, ss_argv_t argv, int sci_idx, void *infop);
 extern void do_get_quota(int argc, ss_argv_t argv, int sci_idx, void *infop);

diff --git a/debugfs/do_orphan.c b/debugfs/do_orphan.c
new file mode 100644 (file)
index 0000000..ff1a03f
--- /dev/null
+++ b/debugfs/do_orphan.c
@@ -0,0 +1,118 @@
+/*
+ * orphan.c --- list orphan inodes
+ *
+ */
+
+#include "config.h"
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#include "debugfs.h"
+
+/*
+ * Return 1 if there was an error, 0 on sucess
+ */
+static int print_orphan_inode(const char *progname, ext2_ino_t ino,
+                             ext2_ino_t *next)
+{
+       struct ext2_inode inode;
+
+       if (debugfs_read_inode(ino, &inode, progname))
+               return 1;
+       printf("ino %-6u  links_count %-3u  size %-11llu\n",
+              ino, inode.i_links_count,
+              (unsigned long long) EXT2_I_SIZE(&inode));
+       if (next)
+               *next = inode.i_dtime;
+       return 0;
+}
+
+struct process_orphan_block_data {
+       const char      *progname;
+       char            *buf;
+       char            *block_buf;
+       e2_blkcnt_t     blocks;
+       int             abort;
+       int             clear;
+       errcode_t       errcode;
+       ext2_ino_t      ino;
+       __u32           generation;
+};
+
+static int process_orphan_block(ext2_filsys fs,
+                              blk64_t  *block_nr,
+                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
+                              blk64_t  ref_blk EXT2FS_ATTR((unused)),
+                              int      ref_offset EXT2FS_ATTR((unused)),
+                              void *priv_data)
+{
+       struct process_orphan_block_data *pd = priv_data;
+       blk64_t                 blk = *block_nr;
+       __u32                   *bdata;
+       int                     j, inodes_per_ob;
+
+       inodes_per_ob = ext2fs_inodes_per_orphan_block(fs);
+       pd->errcode = io_channel_read_blk64(fs->io, blk, 1, pd->buf);
+       if (pd->errcode) {
+               pd->abort = 1;
+               return BLOCK_ABORT;
+       }
+       bdata = (__u32 *)pd->buf;
+       for (j = 0; j < inodes_per_ob; j++) {
+               if (!bdata[j])
+                       continue;
+               if (print_orphan_inode(pd->progname,
+                                      ext2fs_le32_to_cpu(bdata[j]),
+                                      NULL))
+                       break;
+       }
+       return 0;
+}
+
+
+void do_orphan_inodes(int argc, ss_argv_t argv,
+                     int sci_idx EXT2FS_ATTR((unused)),
+                     void *infop EXT2FS_ATTR((unused)))
+{
+       ext2_ino_t ino;
+       errcode_t retval;
+       struct process_orphan_block_data pd;
+       char *orphan_buf;
+       
+       if (check_fs_open(argv[0]))
+               return;
+       if (argc > 1) {
+               fprintf(stderr, "Usage: %s\n", argv[0]);
+               return;
+       }
+       ino = current_fs->super->s_last_orphan;
+       if (ino)
+               printf("Orphan inode list:\n");
+       else
+               printf("Orphan inode list empty\n");
+       while (ino)
+               if (print_orphan_inode(argv[0], ino, &ino))
+                       break;
+       if (!ext2fs_has_feature_orphan_file(current_fs->super))
+               return;
+       printf("Dumping orphan file inode %u:\n",
+              current_fs->super->s_orphan_file_inum);
+       orphan_buf = malloc(current_fs->blocksize * 4);
+       if (!orphan_buf) {
+               fprintf(stderr, "Couldn't allocate orphan block buffer");
+               return;
+       }
+       pd.buf = orphan_buf + 3 * current_fs->blocksize;
+       pd.progname = argv[0];
+       retval = ext2fs_block_iterate3(current_fs,
+                                      current_fs->super->s_orphan_file_inum,
+                                      BLOCK_FLAG_DATA_ONLY,
+                                      orphan_buf, process_orphan_block, &pd);
+       if (retval) {
+               com_err(argv[0], retval,
+                       "while calling ext2fs_block_iterate "
+                       "for the orphan file");
+               return;
+       }
+}

diff --git a/lib/ext2fs/Makefile.in b/lib/ext2fs/Makefile.in
index 1b3a91b..bd140e2 100644 (file)
--- a/lib/ext2fs/Makefile.in
+++ b/lib/ext2fs/Makefile.in
@@ -25,7 +25,8 @@ DEBUG_OBJS= debug_cmds.o extent_cmds.o tst_cmds.o debugfs.o util.o \
        ncheck.o icheck.o ls.o lsdel.o dump.o set_fields.o logdump.o \
        htree.o unused.o e2freefrag.o filefrag.o extent_inode.o zap.o \
        xattrs.o quota.o tst_libext2fs.o create_inode.o \
-       create_inode_libarchive.o journal.o revoke.o recovery.o do_journal.o
+       create_inode_libarchive.o journal.o revoke.o recovery.o \
+       do_journal.o do_orphan.o
 
 DEBUG_SRCS= debug_cmds.c extent_cmds.c tst_cmds.c \
        $(top_srcdir)/debugfs/debugfs.c \
@@ -50,7 +51,8 @@ DEBUG_SRCS= debug_cmds.c extent_cmds.c tst_cmds.c \
        $(top_srcdir)/debugfs/journal.c \
        $(top_srcdir)/e2fsck/revoke.c \
        $(top_srcdir)/e2fsck/recovery.c \
-       $(top_srcdir)/debugfs/do_journal.c
+       $(top_srcdir)/debugfs/do_journal.c \
+       $(top_srcdir)/debugfs/do_orphan.c \
 
 @TDB_CMT@TDB_OBJ= tdb.o
 
@@ -453,6 +455,10 @@ do_journal.o: $(top_srcdir)/debugfs/do_journal.c
        $(E) "  CC $<"
        $(Q) $(CC) $(DEBUGFS_CFLAGS) -c $< -o $@
 
+do_orphan.o: $(top_srcdir)/debugfs/do_orphan.c
+       $(E) "  CC $<"
+       $(Q) $(CC) $(DEBUGFS_CFLAGS) -c $< -o $@
+
 xattrs.o: $(top_srcdir)/debugfs/xattrs.c
        $(E) "  CC $<"
        $(Q) $(CC) $(DEBUGFS_CFLAGS) -c $< -o $@
@@ -1448,11 +1454,12 @@ create_inode.o: $(top_srcdir)/misc/create_inode.c \
  $(top_srcdir)/misc/create_inode_libarchive.h
 create_inode_libarchive.o: $(top_srcdir)/misc/create_inode_libarchive.c \
  $(top_builddir)/lib/config.h $(top_builddir)/lib/dirpaths.h \
- $(top_builddir)/lib/ext2fs/ext2_types.h $(top_srcdir)/misc/create_inode.h \
- $(top_srcdir)/lib/et/com_err.h $(top_srcdir)/lib/e2p/e2p.h \
- $(srcdir)/ext2_fs.h $(srcdir)/ext2fs.h $(srcdir)/ext3_extents.h \
- $(srcdir)/ext2_io.h $(top_builddir)/lib/ext2fs/ext2_err.h \
- $(srcdir)/ext2_ext_attr.h $(srcdir)/hashmap.h $(srcdir)/bitops.h \
+ $(top_srcdir)/misc/create_inode.h $(top_srcdir)/lib/et/com_err.h \
+ $(top_srcdir)/lib/e2p/e2p.h $(srcdir)/ext2_fs.h \
+ $(top_builddir)/lib/ext2fs/ext2_types.h $(srcdir)/ext2fs.h \
+ $(srcdir)/ext3_extents.h $(srcdir)/ext2_io.h \
+ $(top_builddir)/lib/ext2fs/ext2_err.h $(srcdir)/ext2_ext_attr.h \
+ $(srcdir)/hashmap.h $(srcdir)/bitops.h \
  $(top_srcdir)/misc/create_inode_libarchive.h \
  $(top_srcdir)/lib/support/nls-enable.h
 journal.o: $(top_srcdir)/debugfs/journal.c $(top_builddir)/lib/config.h \
@@ -1492,3 +1499,14 @@ do_journal.o: $(top_srcdir)/debugfs/do_journal.c $(top_builddir)/lib/config.h \
  $(top_srcdir)/lib/support/quotaio_tree.h $(srcdir)/kernel-jbd.h \
  $(srcdir)/jfs_compat.h $(srcdir)/kernel-list.h $(srcdir)/compiler.h \
  $(top_srcdir)/debugfs/journal.h $(srcdir)/../../e2fsck/jfs_user.h
+do_orphan.o: $(top_srcdir)/debugfs/do_orphan.c $(top_builddir)/lib/config.h \
+ $(top_builddir)/lib/dirpaths.h $(top_srcdir)/debugfs/debugfs.h \
+ $(top_srcdir)/lib/ss/ss.h $(top_builddir)/lib/ss/ss_err.h \
+ $(top_srcdir)/lib/et/com_err.h $(srcdir)/ext2_fs.h \
+ $(top_builddir)/lib/ext2fs/ext2_types.h $(srcdir)/ext2fs.h \
+ $(srcdir)/ext3_extents.h $(srcdir)/ext2_io.h \
+ $(top_builddir)/lib/ext2fs/ext2_err.h $(srcdir)/ext2_ext_attr.h \
+ $(srcdir)/hashmap.h $(srcdir)/bitops.h \
+ $(top_srcdir)/debugfs/../misc/create_inode.h $(top_srcdir)/lib/e2p/e2p.h \
+ $(top_srcdir)/lib/support/quotaio.h $(top_srcdir)/lib/support/dqblk_v2.h \
+ $(top_srcdir)/lib/support/quotaio_tree.h