mirror of https://github.com/vitalif/e2fsprogs
debugfs: create commands to edit extended attributes
Enhance debugfs to be able to display and modify extended attributes, and create some simple tests for the extended attribute editing functions. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>crypto
Darrick J. Wong
Theodore Ts'o
parent
2ddcee1771
commit
227239b10b
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@ -18,18 +18,18 @@ MK_CMDS= _SS_DIR_OVERRIDE=../lib/ss ../lib/ss/mk_cmds
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DEBUG_OBJS= debug_cmds.o debugfs.o util.o ncheck.o icheck.o ls.o \
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lsdel.o dump.o set_fields.o logdump.o htree.o unused.o e2freefrag.o \
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filefrag.o extent_cmds.o extent_inode.o zap.o create_inode.o
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filefrag.o extent_cmds.o extent_inode.o zap.o create_inode.o xattrs.o
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RO_DEBUG_OBJS= ro_debug_cmds.o ro_debugfs.o util.o ncheck.o icheck.o ls.o \
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lsdel.o logdump.o htree.o e2freefrag.o filefrag.o extent_cmds.o \
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extent_inode.o
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extent_inode.o xattrs.o
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SRCS= debug_cmds.c $(srcdir)/debugfs.c $(srcdir)/util.c $(srcdir)/ls.c \
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$(srcdir)/ncheck.c $(srcdir)/icheck.c $(srcdir)/lsdel.c \
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$(srcdir)/dump.c $(srcdir)/set_fields.c ${srcdir}/logdump.c \
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$(srcdir)/htree.c $(srcdir)/unused.c ${srcdir}/../misc/e2freefrag.c \
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$(srcdir)/filefrag.c $(srcdir)/extent_inode.c $(srcdir)/zap.c \
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$(srcdir)/../misc/create_inode.c
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$(srcdir)/../misc/create_inode.c $(srcdir)/xattrs.c
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LIBS= $(LIBEXT2FS) $(LIBE2P) $(LIBSS) $(LIBCOM_ERR) $(LIBBLKID) \
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$(LIBUUID) $(SYSLIBS)
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@ -285,3 +285,11 @@ create_inode.o: $(srcdir)/../misc/create_inode.c \
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$(top_builddir)/lib/ext2fs/ext2_err.h \
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$(top_srcdir)/lib/ext2fs/ext2_ext_attr.h $(top_srcdir)/lib/ext2fs/bitops.h \
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$(srcdir)/../misc/nls-enable.h
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xattrs.o: $(srcdir)/xattrs.c $(srcdir)/debugfs.h \
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$(top_srcdir)/lib/ext2fs/ext2_fs.h $(top_builddir)/lib/ext2fs/ext2_types.h \
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$(top_srcdir)/lib/ext2fs/ext2fs.h $(top_srcdir)/lib/ext2fs/ext3_extents.h \
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$(top_srcdir)/lib/et/com_err.h $(top_srcdir)/lib/ext2fs/ext2_io.h \
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$(top_builddir)/lib/ext2fs/ext2_err.h \
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$(top_srcdir)/lib/ext2fs/ext2_ext_attr.h $(top_srcdir)/lib/ext2fs/bitops.h \
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$(srcdir)/jfs_user.h $(top_srcdir)/lib/ext2fs/kernel-jbd.h \
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$(top_srcdir)/lib/ext2fs/jfs_compat.h $(top_srcdir)/lib/ext2fs/kernel-list.h
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@ -190,5 +190,17 @@ request do_zap_block, "Zap block: fill with 0, pattern, flip bits etc.",
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request do_block_dump, "Dump contents of a block",
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block_dump, bd;
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request do_list_xattr, "List extended attributes of an inode",
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ea_list;
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request do_get_xattr, "Get an extended attribute of an inode",
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ea_get;
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request do_set_xattr, "Set an extended attribute of an inode",
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ea_set;
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request do_rm_xattr, "Remove an extended attribute of an inode",
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ea_rm;
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end;
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@ -492,27 +492,6 @@ static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
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return 0;
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}
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static void dump_xattr_string(FILE *out, const char *str, int len)
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{
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int printable = 0;
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int i;
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/* check: is string "printable enough?" */
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for (i = 0; i < len; i++)
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if (isprint(str[i]))
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printable++;
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if (printable <= len*7/8)
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printable = 0;
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for (i = 0; i < len; i++)
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if (printable)
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fprintf(out, isprint(str[i]) ? "%c" : "\\%03o",
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(unsigned char)str[i]);
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else
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fprintf(out, "%02x ", (unsigned char)str[i]);
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}
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static void internal_dump_inode_extra(FILE *out,
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const char *prefix EXT2FS_ATTR((unused)),
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ext2_ino_t inode_num EXT2FS_ATTR((unused)),
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@ -532,47 +511,6 @@ static void internal_dump_inode_extra(FILE *out,
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}
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}
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/* Dump extended attributes */
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static int dump_attr(char *name, char *value, size_t value_len, void *data)
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{
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FILE *out = data;
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fprintf(out, " ");
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dump_xattr_string(out, name, strlen(name));
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fprintf(out, " = \"");
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dump_xattr_string(out, value, value_len);
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fprintf(out, "\" (%zu)\n", value_len);
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return 0;
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}
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static void dump_inode_attributes(FILE *out, ext2_ino_t ino)
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{
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struct ext2_xattr_handle *h;
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size_t sz;
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errcode_t err;
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err = ext2fs_xattrs_open(current_fs, ino, &h);
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if (err)
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return;
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err = ext2fs_xattrs_read(h);
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if (err)
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goto out;
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err = ext2fs_xattrs_count(h, &sz);
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if (err || sz == 0)
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goto out;
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fprintf(out, "Extended attributes:\n");
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err = ext2fs_xattrs_iterate(h, dump_attr, out);
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if (err)
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goto out;
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out:
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err = ext2fs_xattrs_close(&h);
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}
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static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
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{
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struct list_blocks_struct lb;
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@ -175,6 +175,9 @@ extern void do_filefrag(int argc, char *argv[]);
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/* util.c */
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extern time_t string_to_time(const char *arg);
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/* xattrs.c */
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void dump_inode_attributes(FILE *out, ext2_ino_t ino);
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/* zap.c */
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extern void do_zap_block(int argc, char **argv);
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extern void do_block_dump(int argc, char **argv);
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@ -0,0 +1,297 @@
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/*
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* xattrs.c --- Modify extended attributes via debugfs.
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*
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* Copyright (C) 2014 Oracle. This file may be redistributed
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* under the terms of the GNU Public License.
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*/
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#include "config.h"
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#include <stdio.h>
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#ifdef HAVE_GETOPT_H
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#include <getopt.h>
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#else
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extern int optind;
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extern char *optarg;
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#endif
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#include <ctype.h>
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#include "debugfs.h"
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/* Dump extended attributes */
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static void dump_xattr_string(FILE *out, const char *str, int len)
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{
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int printable = 0;
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int i;
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/* check: is string "printable enough?" */
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for (i = 0; i < len; i++)
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if (isprint(str[i]))
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printable++;
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if (printable <= len*7/8)
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printable = 0;
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for (i = 0; i < len; i++)
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if (printable)
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fprintf(out, isprint(str[i]) ? "%c" : "\\%03o",
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(unsigned char)str[i]);
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else
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fprintf(out, "%02x ", (unsigned char)str[i]);
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}
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static int dump_attr(char *name, char *value, size_t value_len, void *data)
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{
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FILE *out = data;
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fprintf(out, " ");
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dump_xattr_string(out, name, strlen(name));
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fprintf(out, " = \"");
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dump_xattr_string(out, value, value_len);
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fprintf(out, "\" (%zu)\n", value_len);
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return 0;
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}
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void dump_inode_attributes(FILE *out, ext2_ino_t ino)
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{
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struct ext2_xattr_handle *h;
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size_t sz;
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errcode_t err;
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err = ext2fs_xattrs_open(current_fs, ino, &h);
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if (err)
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return;
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err = ext2fs_xattrs_read(h);
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if (err)
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goto out;
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err = ext2fs_xattrs_count(h, &sz);
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if (err || sz == 0)
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goto out;
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fprintf(out, "Extended attributes:\n");
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err = ext2fs_xattrs_iterate(h, dump_attr, out);
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if (err)
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goto out;
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out:
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err = ext2fs_xattrs_close(&h);
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}
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void do_list_xattr(int argc, char **argv)
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{
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ext2_ino_t ino;
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if (argc != 2) {
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printf("%s: Usage: %s <file>\n", argv[0],
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argv[0]);
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return;
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}
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if (check_fs_open(argv[0]))
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return;
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ino = string_to_inode(argv[1]);
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if (!ino)
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return;
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dump_inode_attributes(stdout, ino);
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}
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void do_get_xattr(int argc, char **argv)
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{
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ext2_ino_t ino;
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struct ext2_xattr_handle *h;
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FILE *fp = NULL;
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char *buf = NULL;
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size_t buflen;
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int i;
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errcode_t err;
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reset_getopt();
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while ((i = getopt(argc, argv, "f:")) != -1) {
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switch (i) {
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case 'f':
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fp = fopen(optarg, "w");
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if (fp == NULL) {
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perror(optarg);
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return;
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}
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break;
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default:
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printf("%s: Usage: %s <file> <attr> [-f outfile]\n",
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argv[0], argv[0]);
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return;
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}
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}
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if (optind != argc - 2) {
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printf("%s: Usage: %s <file> <attr> [-f outfile]\n", argv[0],
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argv[0]);
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return;
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}
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if (check_fs_open(argv[0]))
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return;
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ino = string_to_inode(argv[optind]);
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if (!ino)
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return;
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err = ext2fs_xattrs_open(current_fs, ino, &h);
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if (err)
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return;
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err = ext2fs_xattrs_read(h);
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if (err)
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goto out;
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err = ext2fs_xattr_get(h, argv[optind + 1], (void **)&buf, &buflen);
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if (err)
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goto out;
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if (fp) {
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fwrite(buf, buflen, 1, fp);
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fclose(fp);
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} else {
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dump_xattr_string(stdout, buf, buflen);
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printf("\n");
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}
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if (buf)
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ext2fs_free_mem(&buf);
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out:
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ext2fs_xattrs_close(&h);
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if (err)
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com_err(argv[0], err, "while getting extended attribute");
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}
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void do_set_xattr(int argc, char **argv)
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{
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ext2_ino_t ino;
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struct ext2_xattr_handle *h;
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FILE *fp = NULL;
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char *buf = NULL;
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size_t buflen;
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int i;
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errcode_t err;
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reset_getopt();
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while ((i = getopt(argc, argv, "f:")) != -1) {
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switch (i) {
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case 'f':
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fp = fopen(optarg, "r");
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if (fp == NULL) {
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perror(optarg);
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return;
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}
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break;
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default:
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printf("%s: Usage: %s <file> <attr> [-f infile | "
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"value]\n", argv[0], argv[0]);
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return;
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}
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}
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if (optind != argc - 2 && optind != argc - 3) {
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printf("%s: Usage: %s <file> <attr> [-f infile | value>]\n",
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argv[0], argv[0]);
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return;
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}
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if (check_fs_open(argv[0]))
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return;
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if (check_fs_read_write(argv[0]))
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return;
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if (check_fs_bitmaps(argv[0]))
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return;
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ino = string_to_inode(argv[optind]);
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if (!ino)
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return;
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err = ext2fs_xattrs_open(current_fs, ino, &h);
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if (err)
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return;
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err = ext2fs_xattrs_read(h);
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if (err)
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goto out;
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if (fp) {
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err = ext2fs_get_mem(current_fs->blocksize, &buf);
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if (err)
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goto out;
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buflen = fread(buf, 1, current_fs->blocksize, fp);
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} else {
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buf = argv[optind + 2];
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buflen = strlen(argv[optind + 2]);
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}
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err = ext2fs_xattr_set(h, argv[optind + 1], buf, buflen);
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if (err)
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goto out;
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err = ext2fs_xattrs_write(h);
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if (err)
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goto out;
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out:
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if (fp) {
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fclose(fp);
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ext2fs_free_mem(&buf);
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}
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ext2fs_xattrs_close(&h);
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if (err)
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com_err(argv[0], err, "while setting extended attribute");
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}
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void do_rm_xattr(int argc, char **argv)
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{
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ext2_ino_t ino;
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struct ext2_xattr_handle *h;
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int i;
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errcode_t err;
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if (argc < 3) {
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printf("%s: Usage: %s <file> <attrs>...\n", argv[0], argv[0]);
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return;
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}
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if (check_fs_open(argv[0]))
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return;
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if (check_fs_read_write(argv[0]))
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return;
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if (check_fs_bitmaps(argv[0]))
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return;
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ino = string_to_inode(argv[1]);
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if (!ino)
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return;
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err = ext2fs_xattrs_open(current_fs, ino, &h);
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if (err)
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return;
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err = ext2fs_xattrs_read(h);
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if (err)
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goto out;
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for (i = 2; i < argc; i++) {
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size_t buflen;
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char *buf;
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err = ext2fs_xattr_remove(h, argv[i]);
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if (err)
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goto out;
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}
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err = ext2fs_xattrs_write(h);
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if (err)
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goto out;
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out:
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ext2fs_xattrs_close(&h);
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if (err)
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com_err(argv[0], err, "while removing extended attribute");
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}
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@ -0,0 +1,51 @@
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debugfs edit extended attributes
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mke2fs -Fq -b 1024 test.img 512
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Exit status is 0
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ea_set / user.joe smith
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Exit status is 0
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ea_set / user.moo FEE_FIE_FOE_FUMMMMMM
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Exit status is 0
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ea_list /
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Extended attributes:
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user.joe = "smith" (5)
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user.moo = "FEE_FIE_FOE_FUMMMMMM" (20)
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Exit status is 0
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ea_get / user.moo
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FEE_FIE_FOE_FUMMMMMM
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Exit status is 0
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ea_get / nosuchea
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ea_get: Extended attribute key not found while getting extended attribute
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Exit status is 0
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ea_rm / user.moo
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Exit status is 0
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ea_rm / nosuchea
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ea_rm: Extended attribute key not found while removing extended attribute
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Exit status is 0
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ea_list /
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Extended attributes:
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user.joe = "smith" (5)
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Exit status is 0
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ea_get / user.moo
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ea_get: Extended attribute key not found while getting extended attribute
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Exit status is 0
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ea_rm / user.joe
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Exit status is 0
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ea_list /
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Exit status is 0
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ea_set / user.file_based_xattr -f d_xattr_edits.tmp
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Exit status is 0
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ea_list /
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Extended attributes:
|
||||
user.file_based_xattr = "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567\012" (108)
|
||||
Exit status is 0
|
||||
ea_get / user.file_based_xattr -f d_xattr_edits.ver.tmp
|
||||
Exit status is 0
|
||||
Compare big attribute
|
||||
e2fsck -yf -N test_filesys
|
||||
Pass 1: Checking inodes, blocks, and sizes
|
||||
Pass 2: Checking directory structure
|
||||
Pass 3: Checking directory connectivity
|
||||
Pass 4: Checking reference counts
|
||||
Pass 5: Checking group summary information
|
||||
test_filesys: 11/64 files (0.0% non-contiguous), 29/512 blocks
|
||||
Exit status is 0
|
||||
|
|
@ -0,0 +1 @@
|
|||
edit extended attributes in debugfs
|
||||
|
|
@ -0,0 +1,135 @@
|
|||
if test -x $DEBUGFS_EXE; then
|
||||
|
||||
OUT=$test_name.log
|
||||
EXP=$test_dir/expect
|
||||
VERIFY_FSCK_OPT=-yf
|
||||
|
||||
TEST_DATA=$test_name.tmp
|
||||
VERIFY_DATA=$test_name.ver.tmp
|
||||
|
||||
echo "debugfs edit extended attributes" > $OUT
|
||||
|
||||
dd if=/dev/zero of=$TMPFILE bs=1k count=512 > /dev/null 2>&1
|
||||
|
||||
echo "mke2fs -Fq -b 1024 test.img 512" >> $OUT
|
||||
|
||||
$MKE2FS -Fq $TMPFILE 512 > /dev/null 2>&1
|
||||
status=$?
|
||||
echo Exit status is $status >> $OUT
|
||||
|
||||
echo "ea_set / user.joe smith" > $OUT.new
|
||||
$DEBUGFS -w $TMPFILE -R "ea_set / user.joe smith" >> $OUT.new 2>&1
|
||||
status=$?
|
||||
echo Exit status is $status >> $OUT.new
|
||||
sed -f $cmd_dir/filter.sed $OUT.new >> $OUT
|
||||
|
||||
echo "ea_set / user.moo FEE_FIE_FOE_FUMMMMMM" > $OUT.new
|
||||
$DEBUGFS -w $TMPFILE -R "ea_set / user.moo FEE_FIE_FOE_FUMMMMMM" >> $OUT.new 2>&1
|
||||
status=$?
|
||||
echo Exit status is $status >> $OUT.new
|
||||
sed -f $cmd_dir/filter.sed $OUT.new >> $OUT
|
||||
|
||||
echo "ea_list /" > $OUT.new
|
||||
$DEBUGFS -w $TMPFILE -R "ea_list /" >> $OUT.new 2>&1
|
||||
status=$?
|
||||
echo Exit status is $status >> $OUT.new
|
||||
sed -f $cmd_dir/filter.sed $OUT.new >> $OUT
|
||||
|
||||
echo "ea_get / user.moo" > $OUT.new
|
||||
$DEBUGFS -w $TMPFILE -R "ea_get / user.moo" >> $OUT.new 2>&1
|
||||
status=$?
|
||||
echo Exit status is $status >> $OUT.new
|
||||
sed -f $cmd_dir/filter.sed $OUT.new >> $OUT
|
||||
|
||||
echo "ea_get / nosuchea" > $OUT.new
|
||||
$DEBUGFS -w $TMPFILE -R "ea_get / nosuchea" >> $OUT.new 2>&1
|
||||
status=$?
|
||||
echo Exit status is $status >> $OUT.new
|
||||
sed -f $cmd_dir/filter.sed $OUT.new >> $OUT
|
||||
|
||||
echo "ea_rm / user.moo" > $OUT.new
|
||||
$DEBUGFS -w $TMPFILE -R "ea_rm / user.moo" >> $OUT.new 2>&1
|
||||
status=$?
|
||||
echo Exit status is $status >> $OUT.new
|
||||
sed -f $cmd_dir/filter.sed $OUT.new >> $OUT
|
||||
|
||||
echo "ea_rm / nosuchea" > $OUT.new
|
||||
$DEBUGFS -w $TMPFILE -R "ea_rm / nosuchea" >> $OUT.new 2>&1
|
||||
status=$?
|
||||
echo Exit status is $status >> $OUT.new
|
||||
sed -f $cmd_dir/filter.sed $OUT.new >> $OUT
|
||||
|
||||
echo "ea_list /" > $OUT.new
|
||||
$DEBUGFS -w $TMPFILE -R "ea_list /" >> $OUT.new 2>&1
|
||||
status=$?
|
||||
echo Exit status is $status >> $OUT.new
|
||||
sed -f $cmd_dir/filter.sed $OUT.new >> $OUT
|
||||
|
||||
echo "ea_get / user.moo" > $OUT.new
|
||||
$DEBUGFS -w $TMPFILE -R "ea_get / user.moo" >> $OUT.new 2>&1
|
||||
status=$?
|
||||
echo Exit status is $status >> $OUT.new
|
||||
sed -f $cmd_dir/filter.sed $OUT.new >> $OUT
|
||||
|
||||
echo "ea_rm / user.joe" > $OUT.new
|
||||
$DEBUGFS -w $TMPFILE -R "ea_rm / user.joe" >> $OUT.new 2>&1
|
||||
status=$?
|
||||
echo Exit status is $status >> $OUT.new
|
||||
sed -f $cmd_dir/filter.sed $OUT.new >> $OUT
|
||||
|
||||
echo "ea_list /" > $OUT.new
|
||||
$DEBUGFS -w $TMPFILE -R "ea_list /" >> $OUT.new 2>&1
|
||||
status=$?
|
||||
echo Exit status is $status >> $OUT.new
|
||||
sed -f $cmd_dir/filter.sed $OUT.new >> $OUT
|
||||
|
||||
echo "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567" > $TEST_DATA
|
||||
echo "ea_set / user.file_based_xattr -f $TEST_DATA" > $OUT.new
|
||||
$DEBUGFS -w $TMPFILE -R "ea_set / user.file_based_xattr -f $TEST_DATA" >> $OUT.new 2>&1
|
||||
status=$?
|
||||
echo Exit status is $status >> $OUT.new
|
||||
sed -f $cmd_dir/filter.sed $OUT.new >> $OUT
|
||||
|
||||
echo "ea_list /" > $OUT.new
|
||||
$DEBUGFS -w $TMPFILE -R "ea_list /" >> $OUT.new 2>&1
|
||||
status=$?
|
||||
echo Exit status is $status >> $OUT.new
|
||||
sed -f $cmd_dir/filter.sed $OUT.new >> $OUT
|
||||
|
||||
echo "ea_get / user.file_based_xattr -f $VERIFY_DATA" > $OUT.new
|
||||
$DEBUGFS -w $TMPFILE -R "ea_get / user.file_based_xattr -f $VERIFY_DATA" >> $OUT.new 2>&1
|
||||
status=$?
|
||||
echo Exit status is $status >> $OUT.new
|
||||
sed -f $cmd_dir/filter.sed $OUT.new >> $OUT
|
||||
|
||||
echo "Compare big attribute" > $OUT.new
|
||||
diff -u $TEST_DATA $VERIFY_DATA >> $OUT.new
|
||||
sed -f $cmd_dir/filter.sed $OUT.new >> $OUT
|
||||
|
||||
echo e2fsck $VERIFY_FSCK_OPT -N test_filesys > $OUT.new
|
||||
$FSCK $VERIFY_FSCK_OPT -N test_filesys $TMPFILE >> $OUT.new 2>&1
|
||||
status=$?
|
||||
echo Exit status is $status >> $OUT.new
|
||||
sed -f $cmd_dir/filter.sed $OUT.new >> $OUT
|
||||
|
||||
#
|
||||
# Do the verification
|
||||
#
|
||||
|
||||
rm -f $TMPFILE $OUT.new
|
||||
cmp -s $OUT $EXP
|
||||
status=$?
|
||||
|
||||
if [ "$status" = 0 ] ; then
|
||||
echo "$test_name: $test_description: ok"
|
||||
touch $test_name.ok
|
||||
else
|
||||
echo "$test_name: $test_description: failed"
|
||||
diff $DIFF_OPTS $EXP $OUT > $test_name.failed
|
||||
fi
|
||||
|
||||
unset VERIFY_FSCK_OPT NATIVE_FSCK_OPT OUT EXP TEST_DATA VERIFY_DATA
|
||||
|
||||
else #if test -x $DEBUGFS_EXE; then
|
||||
echo "$test_name: $test_description: skipped"
|
||||
fi
|
||||
Loading…
Reference in New Issue