> On Mar 2, 2017, at 2:50 PM, Darrick J. Wong <darrick.wong@oracle.com> wrote:
> 
> On Thu, Mar 02, 2017 at 12:49:46PM -0700, Andreas Dilger wrote:
>> On Mar 1, 2017, at 9:52 PM, Darrick J. Wong <darrick.wong@oracle.com> wrote:
>>> 
>>> From: Darrick J. Wong <darrick.wong@oracle.com>
>>> 
>>> Create e2info, which reports the fs geometry of an online ext4 filesystem.
>> 
>> Besides providing a place to call the new EXT4_IOC_FSGEOMETRY ioctl, I
>> don't see how this is much different from "dumpe2fs -h"?
> 
> Eh, screw it, I'm walking away from this whole FSGEOMETRY ioctl patchset.
> Too much uphill friction, insufficient motivation...

I can see the FSGEOMETRY ioctl could be useful for applications, especially
if this is common across filesystems.  My main objection was to having a new
tool in e2fsprogs for the sole purpose of calling the ioctl.

Cheers, Andreas

>> 
>>> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
>>> ---
>>> configure            |    4 +
>>> configure.ac         |    3 +
>>> lib/ext2fs/ext2_fs.h |   34 ++++++++
>>> misc/Makefile.in     |   30 ++++++-
>>> misc/e2info.8.in     |   64 ++++++++++++++++
>>> misc/e2info.c        |  205 ++++++++++++++++++++++++++++++++++++++++++++++++++
>>> 6 files changed, 336 insertions(+), 4 deletions(-)
>>> create mode 100644 misc/e2info.8.in
>>> create mode 100644 misc/e2info.c
>>> 
>>> 
>>> diff --git a/configure b/configure
>>> index 5f7b429..b553da1 100755
>>> --- a/configure
>>> +++ b/configure
>>> @@ -642,6 +642,7 @@ root_prefix
>>> UNIX_CMT
>>> CYGWIN_CMT
>>> LINUX_CMT
>>> +E2INFO_CMT
>>> UNI_DIFF_OPTS
>>> SEM_INIT_LIB
>>> FUSE_CMT
>>> @@ -13663,13 +13664,16 @@ fi
>>> { $as_echo "$as_me:${as_lineno-$LINENO}: result: $UNI_DIFF_OPTS" >&5
>>> $as_echo "$UNI_DIFF_OPTS" >&6; }
>>> 
>>> +E2INFO_CMT="#"
>>> case "$host_os" in
>>> linux*)
>>> 
>>> $as_echo "#define HAVE_EXT2_IOCTLS 1" >>confdefs.h
>>> 
>>> +	E2INFO_CMT=
>>> 	;;
>>> esac
>>> +
>>> LINUX_CMT="#"
>>> CYGWIN_CMT="#"
>>> UNIX_CMT=
>>> diff --git a/configure.ac b/configure.ac
>>> index 9da7b86..bf613fd 100644
>>> --- a/configure.ac
>>> +++ b/configure.ac
>>> @@ -1260,11 +1260,14 @@ AC_SUBST(UNI_DIFF_OPTS)
>>> dnl
>>> dnl We use the EXT2 ioctls only under Linux
>>> dnl
>>> +E2INFO_CMT="#"
>>> case "$host_os" in
>>> linux*)
>>> 	AC_DEFINE(HAVE_EXT2_IOCTLS, 1, [Define to 1 if Ext2 ioctls present])
>>> +	E2INFO_CMT=
>>> 	;;
>>> esac
>>> +AC_SUBST(E2INFO_CMT)
>>> dnl
>>> dnl OS-specific uncomment control
>>> dnl
>>> diff --git a/lib/ext2fs/ext2_fs.h b/lib/ext2fs/ext2_fs.h
>>> index 27a7d3a..bad7648 100644
>>> --- a/lib/ext2fs/ext2_fs.h
>>> +++ b/lib/ext2fs/ext2_fs.h
>>> @@ -372,6 +372,40 @@ struct ext4_new_group_input {
>>> #define EXT4_IOC_GROUP_ADD		_IOW('f', 8,struct ext4_new_group_input)
>>> #define EXT4_IOC_RESIZE_FS		_IOW('f', 16, __u64)
>>> 
>>> +/* ext4 fs geometry. */
>>> +struct ext4_fsop_geom {
>>> +	__u32		efg_blocksize;	/* filesystem (data) block size */
>>> +	__u32		efg_bgblocks;	/* fsblocks in an AG		*/
>>> +	__u32		efg_bgcount;	/* number of allocation groups	*/
>>> +	__u32		efg_logblocks;	/* fsblocks in the log		*/
>>> +	__u32		efg_resvblocks;	/* number of reserved blocks	*/
>>> +	__u32		efg_inodesize;	/* inode size in bytes		*/
>>> +	__u32		efg_bg_iblocks;	/* inode blocks per AG		*/
>>> +	__u32		efg_flags;	/* superblock version flags	*/
>>> +	__u64		efg_inodecount;	/* inode count			*/
>>> +	__u64		efg_blockcount;	/* fsblocks in filesystem	*/
>>> +	unsigned char	efg_uuid[16];	/* unique id of the filesystem	*/
>>> +	__u32		efg_sunit;	/* stripe unit, fsblocks	*/
>>> +	__u32		efg_swidth;	/* stripe width, fsblocks	*/
>>> +	__u32		efg_clustersize;/* fs cluster size		*/
>>> +	__u32		efg_flexbgsize;	/* number of bg's in a flexbg	*/
>>> +	__u64		efg_resv[6];
>>> +};
>>> +
>>> +#define EXT4_FSOP_GEOM_FLAGS_ATTR	0x00001	/* extended attr in use	 */
>>> +#define EXT4_FSOP_GEOM_FLAGS_NLINK	0x00002	/* 32-bit nlink values	 */
>>> +#define EXT4_FSOP_GEOM_FLAGS_QUOTA	0x00004	/* quotas enabled	 */
>>> +#define EXT4_FSOP_GEOM_FLAGS_PROJQ	0x00008	/* project quotas	 */
>>> +#define EXT4_FSOP_GEOM_FLAGS_META_CSUM	0x00010	/* metadata checksums	 */
>>> +#define EXT4_FSOP_GEOM_FLAGS_FTYPE	0x00020	/* inode directory types */
>>> +#define EXT4_FSOP_GEOM_FLAGS_64BIT	0x00040	/* 64-bit support	 */
>>> +#define EXT4_FSOP_GEOM_FLAGS_INLINEDATA	0x00080	/* inline data		 */
>>> +#define EXT4_FSOP_GEOM_FLAGS_ENCRYPT	0x00100	/* encrypted files	 */
>>> +#define EXT4_FSOP_GEOM_FLAGS_LARGEDIR	0x00200	/* large directories	 */
>>> +#define EXT4_FSOP_GEOM_FLAGS_EXTENTS	0x00400	/* extents		 */
>>> +
>>> +#define EXT4_IOC_FSGEOMETRY		_IOR ('f', 19, struct ext4_fsop_geom)
>>> +
>>> /*
>>> * Structure of an inode on the disk
>>> */
>>> diff --git a/misc/Makefile.in b/misc/Makefile.in
>>> index 467c15d..311aa57 100644
>>> --- a/misc/Makefile.in
>>> +++ b/misc/Makefile.in
>>> @@ -32,14 +32,19 @@ INSTALL = @INSTALL@
>>> 
>>> @FUSE_CMT@FUSE_PROG= fuse2fs
>>> 
>>> +@E2INFO_CMT@E2INFO_PROG= e2info
>>> +@E2INFO_CMT@E2INFO_MAN= e2info.8
>>> +
>>> SPROGS=		mke2fs badblocks tune2fs dumpe2fs $(BLKID_PROG) logsave \
>>> 			$(E2IMAGE_PROG) @FSCK_PROG@ e2undo
>>> USPROGS=	mklost+found filefrag e2freefrag $(UUIDD_PROG) \
>>> -			$(E4DEFRAG_PROG) $(E4CRYPT_PROG) $(FUSE_PROG)
>>> +			$(E4DEFRAG_PROG) $(E4CRYPT_PROG) $(FUSE_PROG) \
>>> +			$(E2INFO_PROG)
>>> SMANPAGES=	tune2fs.8 mklost+found.8 mke2fs.8 dumpe2fs.8 badblocks.8 \
>>> 			e2label.8 $(FINDFS_MAN) $(BLKID_MAN) $(E2IMAGE_MAN) \
>>> 			logsave.8 filefrag.8 e2freefrag.8 e2undo.8 \
>>> -			$(UUIDD_MAN) $(E4DEFRAG_MAN) $(E4CRYPT_MAN) @FSCK_MAN@
>>> +			$(UUIDD_MAN) $(E4DEFRAG_MAN) $(E4CRYPT_MAN) @FSCK_MAN@ \
>>> +			$(E2INFO_MAN)
>>> FMANPAGES=	mke2fs.conf.5 ext4.5
>>> 
>>> UPROGS=		chattr lsattr @UUID_CMT@ uuidgen
>>> @@ -68,6 +73,7 @@ E4CRYPT_OBJS=   e4crypt.o
>>> E2FREEFRAG_OBJS= e2freefrag.o
>>> E2FUZZ_OBJS=	e2fuzz.o
>>> FUSE2FS_OBJS=	fuse2fs.o journal.o recovery.o revoke.o
>>> +E2INFO_OBJS=	e2info.o
>>> 
>>> PROFILED_TUNE2FS_OBJS=	profiled/tune2fs.o profiled/util.o
>>> PROFILED_MKLPF_OBJS=	profiled/mklost+found.o
>>> @@ -90,8 +96,9 @@ PROFILED_E2FREEFRAG_OBJS= profiled/e2freefrag.o
>>> PROFILED_E2UNDO_OBJS=	profiled/e2undo.o
>>> PROFILED_E4DEFRAG_OBJS=	profiled/e4defrag.o
>>> PROFILED_E4CRYPT_OBJS=	profiled/e4crypt.o
>>> -PROFILED_FUSE2FS_OJBS=	profiled/fuse2fs.o profiled/journal.o \
>>> +PROFILED_FUSE2FS_OBJS=	profiled/fuse2fs.o profiled/journal.o \
>>> 			profiled/recovery.o profiled/revoke.o
>>> +PROFILED_E2INFO_OBJS=	profiled/e2info.o
>>> 
>>> SRCS=	$(srcdir)/tune2fs.c $(srcdir)/mklost+found.c $(srcdir)/mke2fs.c $(srcdir)/mk_hugefiles.c \
>>> 		$(srcdir)/chattr.c $(srcdir)/lsattr.c $(srcdir)/dumpe2fs.c \
>>> @@ -102,7 +109,7 @@ SRCS=	$(srcdir)/tune2fs.c $(srcdir)/mklost+found.c $(srcdir)/mke2fs.c $(srcdir)/
>>> 		$(srcdir)/e2freefrag.c $(srcdir)/create_inode.c \
>>> 		$(srcdir)/fuse2fs.c \
>>> 		$(srcdir)/../debugfs/journal.c $(srcdir)/../e2fsck/revoke.c \
>>> -		$(srcdir)/../e2fsck/recovery.c
>>> +		$(srcdir)/../e2fsck/recovery.c $(srcdir)/e2info.c
>>> 
>>> LIBS= $(LIBEXT2FS) $(LIBCOM_ERR) $(LIBSUPPORT)
>>> DEPLIBS= $(LIBEXT2FS) $(DEPLIBCOM_ERR) $(DEPLIBSUPPORT)
>>> @@ -391,6 +398,11 @@ fuse2fs: $(FUSE2FS_OBJS) $(DEPLIBS) $(DEPLIBBLKID) $(DEPLIBUUID) \
>>> 		$(LIBFUSE) $(LIBBLKID) $(LIBUUID) $(LIBEXT2FS) $(LIBINTL) \
>>> 		$(CLOCK_GETTIME_LIB) $(SYSLIBS)
>>> 
>>> +e2info: $(E2INFO_OBJS) $(DEPLIBS)
>>> +	$(E) "	LD $@"
>>> +	$(Q) $(CC) $(ALL_LDFLAGS) -o e2info $(E2INFO_OBJS) $(LIBINTL) \
>>> +		$(SYSLIBS)
>>> +
>>> journal.o: $(srcdir)/../debugfs/journal.c
>>> 	$(E) "	CC $@"
>>> 	$(Q) $(CC) -c $(JOURNAL_CFLAGS) -I$(srcdir) \
>>> @@ -411,6 +423,10 @@ tst_ismounted: $(srcdir)/ismounted.c $(STATIC_LIBEXT2FS) $(DEPLIBCOM_ERR)
>>> 	$(CC) -o tst_ismounted $(srcdir)/ismounted.c -DDEBUG $(ALL_CFLAGS) \
>>> 		$(LIBCOM_ERR) $(SYSLIBS)
>>> 
>>> +e2info.8: $(DEP_SUBSTITUTE) $(srcdir)/e2info.8.in
>>> +	$(E) "	SUBST $@"
>>> +	$(Q) $(SUBSTITUTE_UPTIME) $(srcdir)/e2info.8.in e2info.8
>>> +
>>> tune2fs.8: $(DEP_SUBSTITUTE) $(srcdir)/tune2fs.8.in
>>> 	$(E) "	SUBST $@"
>>> 	$(Q) $(SUBSTITUTE_UPTIME) $(srcdir)/tune2fs.8.in tune2fs.8
>>> @@ -844,3 +860,9 @@ recovery.o: $(srcdir)/../e2fsck/recovery.c $(srcdir)/../e2fsck/jfs_user.h \
>>> $(top_srcdir)/lib/support/quotaio_tree.h \
>>> $(top_srcdir)/lib/ext2fs/kernel-jbd.h $(top_srcdir)/lib/ext2fs/jfs_compat.h \
>>> $(top_srcdir)/lib/ext2fs/kernel-list.h
>>> +e2info.o: $(srcdir)/e2info.c $(top_builddir)/lib/config.h \
>>> + $(top_builddir)/lib/dirpaths.h $(top_srcdir)/lib/ext2fs/ext2fs.h \
>>> + $(top_builddir)/lib/ext2fs/ext2_types.h $(top_srcdir)/lib/ext2fs/ext2_fs.h \
>>> + $(top_srcdir)/lib/ext2fs/ext3_extents.h $(top_srcdir)/lib/et/com_err.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/bitops.h
>>> diff --git a/misc/e2info.8.in b/misc/e2info.8.in
>>> new file mode 100644
>>> index 0000000..c7f580f
>>> --- /dev/null
>>> +++ b/misc/e2info.8.in
>>> @@ -0,0 +1,64 @@
>>> +.\" -*- nroff -*-
>>> +.\" Copyright 2017 Oracle Inc.  All Rights Reserved.
>>> +.\" This file may be copied under the terms of the GNU Public License.
>>> +.\"
>>> +.\" Verbatim blocks taken from openssl req manpage content
>>> +.de Vb \" Begin verbatim text
>>> +.ft CW
>>> +.nf
>>> +.ne \\$1
>>> +..
>>> +.de Ve \" End verbatim text
>>> +.ft R
>>> +.fi
>>> +..
>>> +
>>> +.TH E2INFO 8 "@E2FSPROGS_MONTH@ @E2FSPROGS_YEAR@" "E2fsprogs version @E2FSPROGS_VERSION@"
>>> +.SH NAME
>>> +e2info \- Display information about a mounted ext4 filesystem
>>> +.SH SYNOPSIS
>>> +.B e2info
>>> +.I mount-point
>>> +.br
>>> +.B e2info \-V
>>> +.SH DESCRIPTION
>>> +Prints the filesystem geometry of an ext4 filesystem.  If the mounted
>>> +filesystem is an ext2 or ext3 filesystem mounted with the ext4 driver,
>>> +the geometry will be displayed.
>>> +.SH "EXAMPLES"
>>> +
>>> +Understanding e2info output.
>>> +.PP
>>> +Suppose one has the following "e2info /dev/sda" output:
>>> +.PP
>>> +.RS 2
>>> +.Vb
>>> +\&meta-data=/dev/loop0             isize=256    bgcount=14808 bgsize=32768 blks
>>> +\&         =                       attr=1       quota=0 pquota=0
>>> +\&         =                       crc=0        64bit=0 inlinedata=0 extents=1
>>> +\&         =                       flexbg=16
>>> +\&data     =                       bsize=4096   blocks=485198848 bg_iblocks=512
>>> +\&         =                       sunit=32     swidth=128 blks clustersize=0
>>> +\&         =                       encrypt=0
>>> +\&naming   =                       bsize=4096   largedir=0 ftype=1 nlink=1
>>> +\&log      =                       bsize=4096   blocks=32768
>>> +.Ve
>>> +.RE
>>> +.PP
>>> +
>>> +Here, the data section of the output indicates "bsize=4096",
>>> +meaning the data block size for this filesystem is 4096 bytes.
>>> +This section also shows "sunit=32 swidth=128 blks", which means
>>> +the stripe unit is 32*4096 bytes = 128 kibibytes and the stripe
>>> +width is 128*4096 bytes = 512 kibibytes.
>>> +A single stripe of this filesystem therefore consists
>>> +of four stripe units (128 blocks / 32 blocks per unit).
>>> +Note also that "flexbg=16", which means that this filesystem has
>>> +512MB flex block groups.
>>> +That is the upper limit of how much physical disk space can be mapped
>>> +into a file.
>>> +.SH SEE ALSO
>>> +.BR mkfs.ext4 (8),
>>> +.BR md (4),
>>> +.BR lvm (8),
>>> +.BR mount (8).
>>> diff --git a/misc/e2info.c b/misc/e2info.c
>>> new file mode 100644
>>> index 0000000..675f005
>>> --- /dev/null
>>> +++ b/misc/e2info.c
>>> @@ -0,0 +1,205 @@
>>> +/*
>>> + * Copyright (c) 2017 Oracle.
>>> + * All Rights Reserved.
>>> + *
>>> + * This program is free software; you can redistribute it and/or
>>> + * modify it under the terms of the GNU General Public License as
>>> + * published by the Free Software Foundation.
>>> + *
>>> + * This program is distributed in the hope that it would be useful,
>>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
>>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>>> + * GNU General Public License for more details.
>>> + *
>>> + * You should have received a copy of the GNU General Public License
>>> + * along with this program; if not, write the Free Software Foundation,
>>> + * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
>>> + */
>>> +#include "config.h"
>>> +#include <stdio.h>
>>> +#include <stdlib.h>
>>> +#include <string.h>
>>> +#include <libgen.h>
>>> +#include <unistd.h>
>>> +#include <sys/ioctl.h>
>>> +#include <sys/types.h>
>>> +#include <sys/stat.h>
>>> +#include <fcntl.h>
>>> +#include <errno.h>
>>> +#include <mntent.h>
>>> +#include <limits.h>
>>> +
>>> +#include "ext2fs/ext2_fs.h"
>>> +
>>> +#include "../version.h"
>>> +#include "support/nls-enable.h"
>>> +
>>> +static const char *progname = "e2info";
>>> +
>>> +static void
>>> +usage(void)
>>> +{
>>> +	fprintf(stderr, _(
>>> +"Usage: %s [options] mountpoint\n\n\
>>> +	-V          print version information\n"),
>>> +		progname);
>>> +	exit(2);
>>> +}
>>> +
>>> +#define PROC_MOUNTS	"/proc/mounts"
>>> +int
>>> +find_datadev(
>>> +	const char	*arg,
>>> +	char		*datadev,
>>> +	char		*mntpoint)
>>> +{
>>> +	struct mntent	*mnt;
>>> +	FILE		*mtp;
>>> +	char		*mtab_file;
>>> +	char		rmnt_fsname[PATH_MAX], rmnt_dir[PATH_MAX];
>>> +	struct stat	sbuf;
>>> +	dev_t		fd_dev;
>>> +
>>> +	if (stat(arg, &sbuf) < 0)
>>> +		return errno;
>>> +	/*
>>> +	 * We want to match st_rdev if the path provided is a device
>>> +	 * special file.  Otherwise we are looking for the the
>>> +	 * device id for the containing filesystem, in st_dev.
>>> +	 */
>>> +	if (S_ISBLK(sbuf.st_mode) || S_ISCHR(sbuf.st_mode))
>>> +		fd_dev = sbuf.st_rdev;
>>> +	else
>>> +		fd_dev = sbuf.st_dev;
>>> +
>>> +	mtab_file = PROC_MOUNTS;
>>> +	if (access(mtab_file, R_OK) != 0)
>>> +		mtab_file = MOUNTED;
>>> +
>>> +	if ((mtp = setmntent(mtab_file, "r")) == NULL)
>>> +		return ENOENT;
>>> +
>>> +	while ((mnt = getmntent(mtp)) != NULL) {
>>> +		if (!realpath(mnt->mnt_dir, rmnt_dir))
>>> +			continue;
>>> +		if (!realpath(mnt->mnt_fsname, rmnt_fsname))
>>> +			continue;
>>> +
>>> +		if (stat(rmnt_fsname, &sbuf) < 0)
>>> +			continue;
>>> +		if (sbuf.st_rdev == fd_dev) {
>>> +			strncpy(datadev, rmnt_fsname, PATH_MAX);
>>> +			strncpy(mntpoint, rmnt_dir, PATH_MAX);
>>> +			break;
>>> +		}
>>> +	}
>>> +	endmntent(mtp);
>>> +	return 0;
>>> +}
>>> +
>>> +int
>>> +main(int argc, char **argv)
>>> +{
>>> +	struct ext4_fsop_geom	geo;
>>> +	char			*progname;
>>> +	int			fd;
>>> +	int			c;
>>> +	int			attr_enabled;
>>> +	int			nlink_enabled;
>>> +	int			quota_enabled;
>>> +	int			projquota_enabled;
>>> +	int			metacrc_enabled;
>>> +	int			ftype_enabled;
>>> +	int			is_64bit;
>>> +	int			inlinedata_enabled;
>>> +	int			encrypt_enabled;
>>> +	int			largedir_enabled;
>>> +	int			extents_enabled;
>>> +	char			datadev[PATH_MAX];
>>> +	char			mntpoint[PATH_MAX];
>>> +
>>> +	progname = basename(argv[0]);
>>> +#ifdef ENABLE_NLS
>>> +	setlocale(LC_ALL, "");
>>> +	bindtextdomain(PACKAGE, LOCALEDIR);
>>> +	textdomain(PACKAGE);
>>> +#endif
>>> +
>>> +	while ((c = getopt(argc, argv, "V")) != EOF) {
>>> +		switch (c) {
>>> +		case 'V':
>>> +			printf(_("%s version %s\n"), progname, VERSION);
>>> +			exit(0);
>>> +		case '?':
>>> +		default:
>>> +			usage();
>>> +		}
>>> +	}
>>> +	if (argc - optind != 1)
>>> +		usage();
>>> +
>>> +	fd = open(argv[optind], O_RDONLY);
>>> +	if (fd < 0) {
>>> +		perror(argv[optind]);
>>> +		return 1;
>>> +	}
>>> +
>>> +	if (find_datadev(argv[optind], datadev, mntpoint)) {
>>> +		perror("find_datadev");
>>> +		strncpy(datadev, argv[optind], PATH_MAX);
>>> +		strncpy(mntpoint, argv[optind], PATH_MAX);
>>> +	}
>>> +
>>> +	close(fd);
>>> +	fd = open(mntpoint, O_RDONLY);
>>> +	if (fd < 0) {
>>> +		perror(mntpoint);
>>> +		return 1;
>>> +	}
>>> +
>>> +	/* get the current filesystem size & geometry */
>>> +	if (ioctl(fd, EXT4_IOC_FSGEOMETRY, &geo) < 0) {
>>> +		fprintf(stderr, _(
>>> +			"%s: cannot determine geometry of filesystem"
>>> +			" mounted at %s: %s\n"),
>>> +			progname, argv[optind], strerror(errno));
>>> +		exit(1);
>>> +	}
>>> +
>>> +	attr_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_ATTR ? 1 : 0;
>>> +	nlink_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_NLINK ? 1 : 0;
>>> +	quota_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_QUOTA ? 1 : 0;
>>> +	projquota_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_PROJQ ? 1 : 0;
>>> +	metacrc_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_META_CSUM ? 1 : 0;
>>> +	ftype_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_FTYPE ? 1 : 0;
>>> +	is_64bit = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_64BIT ? 1 : 0;
>>> +	inlinedata_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_INLINEDATA ? 1 : 0;
>>> +	encrypt_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_ENCRYPT ? 1 : 0;
>>> +	largedir_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_LARGEDIR ? 1 : 0;
>>> +	extents_enabled = geo.efg_flags & EXT4_FSOP_GEOM_FLAGS_EXTENTS ? 1 : 0;
>>> +
>>> +	printf(_(
>>> +	    "meta-data=%-22s isize=%-6u bgcount=%u bgsize=%u blks\n"
>>> +	    "         =%-22s attr=%-7u quota=%u pquota=%u\n"
>>> +	    "         =%-22s crc=%-8u 64bit=%u inlinedata=%u extents=%u\n"
>>> +	    "         =%-22s flexbg=%u\n"
>>> +	    "data     =%-22s bsize=%-6u blocks=%llu bg_iblocks=%u\n"
>>> +	    "         =%-22s sunit=%-6u swidth=%u blks clustersize=%u\n"
>>> +	    "         =%-22s encrypt=%u\n"
>>> +	    "naming   =%-22s bsize=%-6u largedir=%d ftype=%d nlink=%u\n"
>>> +	    "log      =%-22s bsize=%-6u blocks=%u\n"),
>>> +		datadev, geo.efg_inodesize, geo.efg_bgcount, geo.efg_bgblocks,
>>> +		"", attr_enabled, quota_enabled, projquota_enabled,
>>> +		"", metacrc_enabled, is_64bit, inlinedata_enabled,
>>> +			extents_enabled,
>>> +		"", geo.efg_flexbgsize,
>>> +		"", geo.efg_blocksize, (unsigned long long)geo.efg_blockcount,
>>> +			geo.efg_bg_iblocks,
>>> +		"", geo.efg_sunit, geo.efg_swidth, geo.efg_clustersize,
>>> +		"", encrypt_enabled,
>>> +		"", geo.efg_blocksize, largedir_enabled, ftype_enabled,
>>> +			nlink_enabled,
>>> +		"", geo.efg_blocksize, geo.efg_logblocks);
>>> +
>>> +	exit(0);
>>> +}
>>> 
>> 
>> 
>> Cheers, Andreas
>> 
>> 
>> 
>> 
>> 
> 
> 


Cheers, Andreas