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Re: [PATCH v3] xfstests: Use upstream version of fstrim instead of the l

To: Tomas Racek <tracek@xxxxxxxxxx>
Subject: Re: [PATCH v3] xfstests: Use upstream version of fstrim instead of the local one
From: Lukáš Czerner <lczerner@xxxxxxxxxx>
Date: Thu, 4 Oct 2012 11:12:23 +0200 (CEST)
Cc: Lukáš Czerner <lczerner@xxxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <894268998.1833300.1349340474783.JavaMail.root@xxxxxxxxxx>
References: <894268998.1833300.1349340474783.JavaMail.root@xxxxxxxxxx>
User-agent: Alpine 2.00 (LFD 1167 2008-08-23)
On Thu, 4 Oct 2012, Tomas Racek wrote:

> Date: Thu, 4 Oct 2012 04:47:54 -0400 (EDT)
> From: Tomas Racek <tracek@xxxxxxxxxx>
> To: Lukáš Czerner <lczerner@xxxxxxxxxx>
> Cc: xfs@xxxxxxxxxxx
> Subject: Re: [PATCH v3] xfstests: Use upstream version of fstrim instead of
>     the local one
> 
> ----- Original Message -----
> > On Wed, 15 Aug 2012, Tomas Racek wrote:
> > 
> > > Date: Wed, 15 Aug 2012 15:00:45 +0200
> > > From: Tomas Racek <tracek@xxxxxxxxxx>
> > > To: xfs@xxxxxxxxxxx
> > > Cc: lczerner@xxxxxxxxxx, Tomas Racek <tracek@xxxxxxxxxx>
> > > Subject: [PATCH v3] xfstests: Use upstream version of fstrim
> > > instead of the
> > >     local one
> > > 
> > > Local version of fstrim was dropped so that we depend on upstream
> > > version which is now available via $FSTRIM_PROG. _require_fstrim
> > > was
> > > added to check if fstrim is available in the system and
> > > _test_batched_discard to check if we can run fstrim on certain
> > > mountpoint.
> > > 
> > > Also tests 251 and 260 were modified to reflect this change.
> > > 
> > > Signed-off-by: Tomas Racek <tracek@xxxxxxxxxx>
> > > ---
> > >  .gitignore    |    1 -
> > >  251           |   14 +--
> > >  260           |   36 +++++----
> > >  260.out       |    8 +-
> > >  common.config |    1 +
> > >  common.rc     |   13 +++
> > >  src/Makefile  |    2 +-
> > >  src/fstrim.c  |  257
> > >  ---------------------------------------------------------
> > >  8 files changed, 45 insertions(+), 287 deletions(-)
> > >  delete mode 100644 src/fstrim.c
> > > 
> > > diff --git a/.gitignore b/.gitignore
> > > index 900ff95..c0e0e4c 100644
> > > --- a/.gitignore
> > > +++ b/.gitignore
> > > @@ -37,7 +37,6 @@ src/fill
> > >  src/fill2
> > >  src/fs_perms
> > >  src/fstest
> > > -src/fstrim
> > >  src/ftrunc
> > >  src/genhashnames
> > >  src/getdevicesize
> > > diff --git a/251 b/251
> > > index f46b6e2..dbb6ba7 100755
> > > --- a/251
> > > +++ b/251
> > > @@ -44,6 +44,7 @@ mypid=$$
> > >  _supported_fs generic
> > >  _supported_os Linux
> > >  _require_scratch
> > > +_require_fstrim
> > >  _scratch_mkfs >/dev/null 2>&1
> > >  _scratch_mount
> > >  
> > > @@ -71,16 +72,11 @@ _fail()
> > >   kill $mypid 2> /dev/null
> > >  }
> > >  
> > > -_check_fstrim_support()
> > > -{
> > > - $here/src/fstrim -l 10M $SCRATCH_MNT &> /dev/null
> > > -}
> > 
> > Good to see that you've replaced this with generic check.
> > 
> > > -
> > >  _guess_max_minlen()
> > >  {
> > >   mmlen=100000
> > >   while [ $mmlen -gt 1 ]; do
> > > -         $here/src/fstrim -l $(($mmlen*2))k -m ${mmlen}k $SCRATCH_MNT &>
> > > /dev/null && break
> > > +         $FSTRIM_PROG -l $(($mmlen*2))k -m ${mmlen}k $SCRATCH_MNT &>
> > > /dev/null && break
> > >           mmlen=$(($mmlen/2))
> > >   done
> > >   echo $mmlen
> > > @@ -102,12 +98,12 @@ fstrim_loop()
> > >           minlen=$(((RANDOM*($RANDOM%2+1))%$mmlen))
> > >           start=$RANDOM
> > >           if [ $((RANDOM%10)) -gt 7 ]; then
> > > -                 $here/src/fstrim $SCRATCH_MNT &
> > > +                 $FSTRIM_PROG $SCRATCH_MNT &
> > >                   fpid=$!
> > >                   wait $fpid
> > >           fi
> > >           while [ $start -lt $fsize ] ; do
> > > -                 $here/src/fstrim -m ${minlen}k -s ${start}k -l ${step}k
> > > $SCRATCH_MNT &
> > > +                 $FSTRIM_PROG -m ${minlen}k -o ${start}k -l ${step}k
> > > $SCRATCH_MNT &
> > >                   fpid=$!
> > >                   wait $fpid
> > >                   start=$(( $start + $step ))
> > > @@ -157,7 +153,7 @@ content=$here
> > >  
> > >  # Check for FITRIM support
> > >  echo -n "Checking FITRIM support: "
> > > -_check_fstrim_support || _notrun "FSTRIM is not supported"
> > > +_test_batched_discard $SCRATCH_MNT || _notrun "FITRIM not
> > > supported on $SCRATCH_DEV"
> > 
> > good
> > 
> > >  echo "done."
> > >  
> > >  mkdir -p $tmp
> > > diff --git a/260 b/260
> > > index b005cd3..21aa866 100755
> > > --- a/260
> > > +++ b/260
> > > @@ -41,13 +41,13 @@ mypid=$$
> > >  _supported_fs generic
> > >  _supported_os Linux
> > >  _require_math
> > > +_require_fstrim
> > >  
> > >  _require_scratch
> > >  _scratch_mkfs >/dev/null 2>&1
> > >  _scratch_mount
> > >  
> > > -FSTRIM="$here/src/fstrim"
> > > -"$FSTRIM" -l 10M $SCRATCH_MNT &> /dev/null || _notrun "FSTRIM is
> > > not supported"
> > > +_test_batched_discard $SCRATCH_MNT || _notrun "FITRIM not
> > > supported on $SCRATCH_DEV"
> > >  
> > >  fssize=$(df -k | grep "$SCRATCH_MNT" | grep "$SCRATCH_DEV"  | awk
> > >  '{print $2}')
> > >  
> > > @@ -59,20 +59,24 @@ max_64bit=$(_math "2^64 - 1")
> > >  # the file system
> > >  
> > >  echo "[+] Start beyond the end of fs (should fail)"
> > > -"$FSTRIM" -s $beyond_eofs $SCRATCH_MNT
> > > +out=$($FSTRIM_PROG -o $beyond_eofs $SCRATCH_MNT 2>&1)
> > >  [ $? -eq 0 ] && status=1
> > > +echo -n $out | cut -d ":" -f3-
> > 
> > I am not sure what is the point of this change ? Simply
> > s/FSTRIM/FSTRIM_PROG/ should be fine right ? Also you change some of
> > it but not all of it.
> 
> The reason for this is that upstream fstrim prefixes error message with path, 
> that is:
> 
> # fstrim -v -o `echo 2^64-1 | bc` /mnt/test/
> fstrim: /mnt/test/: FITRIM ioctl failed: Invalid argument
> 
> vs original:
> 
> # ./fstrim -v -s `echo 2^64-1 | bc` /mnt/test/
> fstrim: FSTRIM: Invalid argument
> 
> And simple "$FSTRIM_PROG ... | cut ..." doesn't preserve (error) return value.
> 
> "should succeed" calls weren't changed because no output is expected.

Ok, so the reason is to strip the variable mount point from the
error message. It sounds ok than.

This makes me think that we maybe want to have a filter function to
filter out all the variables such as SCRATCH_MNT, SCRATCH_DEV, TEST_DIR,
TEST_DEV and maybe more and replace then with the some appropriate strings
(SCRATCH_MNT etc. maybe?). I am sure more tests can benefit from this not
needing to to the filtering on their own.

> 
> > >  
> > >  echo "[+] Start beyond the end of fs with len set (should fail)"
> > > -"$FSTRIM" -s $beyond_eofs -l1M $SCRATCH_MNT
> > > +out=$($FSTRIM_PROG -o $beyond_eofs -l1M $SCRATCH_MNT 2>&1)
> > >  [ $? -eq 0 ] && status=1
> > > +echo -n $out | cut -d ":" -f3-
> > 
> > same here
> > 
> > >  
> > >  echo "[+] Start = 2^64-1 (should fail)"
> > > -"$FSTRIM" -s $max_64bit $SCRATCH_MNT
> > > +out=$($FSTRIM_PROG -o $max_64bit $SCRATCH_MNT 2>&1)
> > >  [ $? -eq 0 ] && status=1
> > > +echo -n $out | cut -d ":" -f3-
> > 
> > here
> > 
> > >  
> > >  echo "[+] Start = 2^64-1 and len is set (should fail)"
> > > -"$FSTRIM" -s $max_64bit -l1M $SCRATCH_MNT
> > > +out=$($FSTRIM_PROG -o $max_64bit -l1M $SCRATCH_MNT 2>&1)
> > >  [ $? -eq 0 ] && status=1
> > > +echo -n $out | cut -d ":" -f3-
> > 
> > and here.
> > 
> > >  
> > >  _scratch_unmount
> > >  _scratch_mkfs >/dev/null 2>&1
> > > @@ -82,16 +86,16 @@ _scratch_mount
> > >  # since the length should be truncated
> > >  
> > >  echo "[+] Default length (should succeed)"
> > > -"$FSTRIM" $SCRATCH_MNT
> > > +$FSTRIM_PROG $SCRATCH_MNT
> > >  [ $? -ne 0 ] && status=1
> > >  echo "[+] Default length with start set (should succeed)"
> > > -"$FSTRIM" -s10M $SCRATCH_MNT
> > > +$FSTRIM_PROG -o10M $SCRATCH_MNT
> > >  [ $? -ne 0 ] && status=1
> > >  echo "[+] Length beyond the end of fs (should succeed)"
> > > -"$FSTRIM" -l $beyond_eofs $SCRATCH_MNT
> > > +$FSTRIM_PROG -l $beyond_eofs $SCRATCH_MNT
> > >  [ $? -ne 0 ] && status=1
> > >  echo "[+] Length beyond the end of fs with start set (should
> > >  succeed)"
> > > -"$FSTRIM" -s10M -l $beyond_eofs $SCRATCH_MNT
> > > +$FSTRIM_PROG -o10M -l $beyond_eofs $SCRATCH_MNT
> > >  [ $? -ne 0 ] && status=1
> > >  
> > >  _scratch_unmount
> > > @@ -101,8 +105,9 @@ _scratch_mount
> > >  # This is a bit fuzzy, but since the file system is fresh
> > >  # there should be at least (fssize/2) free space to trim.
> > >  # This is supposed to catch wrong FITRIM argument handling
> > > -out=$("$FSTRIM" -v -s10M $SCRATCH_MNT)
> > > -bytes=${out%% *}
> > > +out=$($FSTRIM_PROG -v -o10M $SCRATCH_MNT)
> > > +nopref=${out##*: }
> > > +bytes=${nopref%% *}
> 
> It's similar here, just strip the path from the output.
> 
> > >  
> > >  if [ $bytes -gt $(_math "$fssize*1024") ]; then
> > >   status=1
> > > @@ -155,7 +160,7 @@ _scratch_unmount
> > >  _scratch_mkfs >/dev/null 2>&1
> > >  _scratch_mount
> > >  # It should fail since $start is beyond the end of file system
> > > -"$FSTRIM" -s$start -l10M $SCRATCH_MNT &> /dev/null
> > > +$FSTRIM_PROG -o$start -l10M $SCRATCH_MNT &> /dev/null
> > >  if [ $? -eq 0 ]; then
> > >   status=1
> > >   echo "It seems that fs logic handling start"\
> > > @@ -173,8 +178,9 @@ _scratch_mount
> > >  # It is because btrfs does not have not-yet-used parts of the
> > >  device
> > >  # mapped and since we got here right after the mkfs, there is not
> > >  # enough free extents in the root tree.
> > > -out=$("$FSTRIM" -v -l$len $SCRATCH_MNT)
> > > -bytes=${out%% *}
> > > +out=$($FSTRIM_PROG -v -l$len $SCRATCH_MNT)
> > > +nopref=${out##*: }
> > > +bytes=${nopref%% *}
> > >  if [ $bytes -le $(_math "$fssize*512") ] && [ $FSTYP != "btrfs" ];
> > >  then
> > >   status=1
> > >   echo "It seems that fs logic handling len argument overflows"
> > > diff --git a/260.out b/260.out
> > > index 199320a..cf0b14e 100644
> > > --- a/260.out
> > > +++ b/260.out
> > > @@ -1,12 +1,12 @@
> > >  QA output created by 260
> > >  [+] Start beyond the end of fs (should fail)
> > > -fstrim: FSTRIM: Invalid argument
> > > + FITRIM ioctl failed: Invalid argument
> > >  [+] Start beyond the end of fs with len set (should fail)
> > > -fstrim: FSTRIM: Invalid argument
> > > + FITRIM ioctl failed: Invalid argument
> > >  [+] Start = 2^64-1 (should fail)
> > > -fstrim: FSTRIM: Invalid argument
> > > + FITRIM ioctl failed: Invalid argument
> > >  [+] Start = 2^64-1 and len is set (should fail)
> > > -fstrim: FSTRIM: Invalid argument
> > > + FITRIM ioctl failed: Invalid argument
> > >  [+] Default length (should succeed)
> > >  [+] Default length with start set (should succeed)
> > >  [+] Length beyond the end of fs (should succeed)
> > > diff --git a/common.config b/common.config
> > > index 7bed1c5..57f505d 100644
> > > --- a/common.config
> > > +++ b/common.config
> > > @@ -158,6 +158,7 @@ export XFS_QUOTA_PROG="`set_prog_path
> > > xfs_quota`"
> > >  export KILLALL_PROG="`set_prog_path killall`"
> > >  export INDENT_PROG="`set_prog_path indent`"
> > >  export XFS_COPY_PROG="`set_prog_path xfs_copy`"
> > > +export FSTRIM_PROG="`set_prog_path fstrim`"
> > >  
> > >  # Generate a comparable xfsprogs version number in the form of
> > >  # major * 10000 + minor * 100 + release
> > > diff --git a/common.rc b/common.rc
> > > index 602513a..0d2f712 100644
> > > --- a/common.rc
> > > +++ b/common.rc
> > > @@ -1778,6 +1778,19 @@ _devmgt_add()
> > >   echo ${tdl} >  /sys/class/scsi_host/host${h}/scan || _fail "Add
> > >   disk failed"
> > >  }
> > >  
> > > +_require_fstrim()
> > > +{
> > > + if [ -z "$FSTRIM_PROG" ]; then
> > > +         _notrun "This test requires fstrim utility."
> > > + fi
> > > +}
> > > +
> > > +_test_batched_discard()
> > > +{
> > 
> > Something like this should be here:
> > 
> > if [ $# -ne 1 ]
> > then
> >     echo "Usage: _test_batched_discard mount_point" 1>&2
> >     exit 1
> > fi
> 
> OK, I will add this.
> 
> 
> Tom
> 
> > 
> > > + _require_fstrim
> > > + $FSTRIM_PROG ${1} &>/dev/null
> > 
> > It is ok I guess, we do not really need to specify the length
> > argument
> > since it should not take too long to discard the whole file system.
> > 
> > Thanks!
> > -Lukas
> > 
> > > +}
> > > +
> > >  
> > > ################################################################################
> > >  
> > >  if [ "$iam" != new -a "$iam" != bench ]
> > > diff --git a/src/Makefile b/src/Makefile
> > > index 67250ee..9671a38 100644
> > > --- a/src/Makefile
> > > +++ b/src/Makefile
> > > @@ -17,7 +17,7 @@ LINUX_TARGETS = xfsctl bstat t_mtab getdevicesize
> > > preallo_rw_pattern_reader \
> > >   preallo_rw_pattern_writer ftrunc trunc fs_perms testx looptest \
> > >   locktest unwritten_mmap bulkstat_unlink_test t_stripealign \
> > >   bulkstat_unlink_test_modified t_dir_offset t_futimens t_immutable
> > >   \
> > > - stale_handle pwrite_mmap_blocked fstrim t_dir_offset2
> > > + stale_handle pwrite_mmap_blocked t_dir_offset2
> > >  
> > >  SUBDIRS =
> > >  
> > > diff --git a/src/fstrim.c b/src/fstrim.c
> > > deleted file mode 100644
> > > index e23bcb3..0000000
> > > --- a/src/fstrim.c
> > > +++ /dev/null
> > > @@ -1,257 +0,0 @@
> > > -/*
> > > - * fstrim.c -- discard the part (or whole) of mounted filesystem.
> > > - *
> > > - * Copyright (C) 2010 Red Hat, Inc., Lukas Czerner
> > > <lczerner@xxxxxxxxxx>
> > > - *
> > > - * This program is free software: you can redistribute it and/or
> > > modify
> > > - * it under the terms of the GNU General Public License as
> > > published by
> > > - * the Free Software Foundation, either version 2 of the License,
> > > or
> > > - * (at your option) any later version.
> > > - *
> > > - * This program is distributed in the hope that it will be useful,
> > > - * but WITHOUT ANY WARRANTY; without even the implied warranty of
> > > - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> > > - * GNU General Public License for more details.
> > > - *
> > > - * You should have received a copy of the GNU General Public
> > > License
> > > - * along with this program.  If not, see
> > > <http://www.gnu.org/licenses/>.
> > > - *
> > > - * This program uses FITRIM ioctl to discard parts or the whole
> > > filesystem
> > > - * online (mounted). You can specify range (start and lenght) to
> > > be
> > > - * discarded, or simply discard while filesystem.
> > > - *
> > > - * Usage: fstrim [options] <mount point>
> > > - */
> > > -
> > > -#include <string.h>
> > > -#include <unistd.h>
> > > -#include <stdlib.h>
> > > -#include <errno.h>
> > > -#include <stdio.h>
> > > -#include <stdint.h>
> > > -#include <fcntl.h>
> > > -#include <limits.h>
> > > -#include <stdarg.h>
> > > -#include <getopt.h>
> > > -
> > > -#include <sys/ioctl.h>
> > > -#include <sys/stat.h>
> > > -#include <linux/fs.h>
> > > -
> > > -#ifndef FITRIM
> > > -struct fstrim_range {
> > > - uint64_t start;
> > > - uint64_t len;
> > > - uint64_t minlen;
> > > -};
> > > -#define FITRIM           _IOWR('X', 121, struct fstrim_range)
> > > -#endif
> > > -
> > > -const char *program_name = "fstrim";
> > > -
> > > -struct options {
> > > - struct fstrim_range *range;
> > > - char mpoint[PATH_MAX];
> > > - char verbose;
> > > -};
> > > -
> > > -static void usage(void)
> > > -{
> > > - fprintf(stderr,
> > > -         "Usage: %s [-s start] [-l length] [-m minimum-extent]"
> > > -         " [-v] {mountpoint}\n\t"
> > > -         "-s Starting Byte to discard from\n\t"
> > > -         "-l Number of Bytes to discard from the start\n\t"
> > > -         "-m Minimum extent length to discard\n\t"
> > > -         "-v Verbose - number of discarded bytes\n",
> > > -         program_name);
> > > -}
> > > -
> > > -static void err_exit(const char *fmt, ...)
> > > -{
> > > - va_list pvar;
> > > - va_start(pvar, fmt);
> > > - vfprintf(stderr, fmt, pvar);
> > > - va_end(pvar);
> > > - usage();
> > > - exit(EXIT_FAILURE);
> > > -}
> > > -
> > > -/**
> > > - * Get the number from argument. It can be number followed by
> > > - * units: k|K, m|M, g|G, t|T
> > > - */
> > > -static unsigned long long get_number(char **optarg)
> > > -{
> > > - char *opt, *end;
> > > - unsigned long long number, max;
> > > -
> > > - /* get the max to avoid overflow */
> > > - max = ULLONG_MAX / 1024;
> > > - number = 0;
> > > - opt = *optarg;
> > > -
> > > - if (*opt == '-') {
> > > -         err_exit("%s: %s (%s)\n", program_name,
> > > -                  strerror(ERANGE), *optarg);
> > > - }
> > > -
> > > - errno = 0;
> > > - number = strtoull(opt, &end , 0);
> > > - if (errno)
> > > -         err_exit("%s: %s (%s)\n", program_name,
> > > -                  strerror(errno), *optarg);
> > > -
> > > - /*
> > > -  * Convert units to numbers. Fall-through stack is used for units
> > > -  * so absence of breaks is intentional.
> > > -  */
> > > - switch (*end) {
> > > - case 'T': /* terabytes */
> > > - case 't':
> > > -         if (number > max)
> > > -                 err_exit("%s: %s (%s)\n", program_name,
> > > -                          strerror(ERANGE), *optarg);
> > > -         number *= 1024;
> > > - case 'G': /* gigabytes */
> > > - case 'g':
> > > -         if (number > max)
> > > -                 err_exit("%s: %s (%s)\n", program_name,
> > > -                          strerror(ERANGE), *optarg);
> > > -         number *= 1024;
> > > - case 'M': /* megabytes */
> > > - case 'm':
> > > -         if (number > max)
> > > -                 err_exit("%s: %s (%s)\n", program_name,
> > > -                          strerror(ERANGE), *optarg);
> > > -         number *= 1024;
> > > - case 'K': /* kilobytes */
> > > - case 'k':
> > > -         if (number > max)
> > > -                 err_exit("%s: %s (%s)\n", program_name,
> > > -                          strerror(ERANGE), *optarg);
> > > -         number *= 1024;
> > > -         end++;
> > > - case '\0': /* end of the string */
> > > -         break;
> > > - default:
> > > -         err_exit("%s: %s (%s)\n", program_name,
> > > -                  strerror(EINVAL), *optarg);
> > > -         return 0;
> > > - }
> > > -
> > > - if (*end != '\0') {
> > > -         err_exit("%s: %s (%s)\n", program_name,
> > > -                  strerror(EINVAL), *optarg);
> > > - }
> > > -
> > > - return number;
> > > -}
> > > -
> > > -static int parse_opts(int argc, char **argv, struct options *opts)
> > > -{
> > > - int c;
> > > -
> > > - while ((c = getopt(argc, argv, "s:l:m:v")) != EOF) {
> > > -         switch (c) {
> > > -         case 's': /* starting point */
> > > -                 opts->range->start = get_number(&optarg);
> > > -                 break;
> > > -         case 'l': /* length */
> > > -                 opts->range->len = get_number(&optarg);
> > > -                 break;
> > > -         case 'm': /* minlen */
> > > -                 opts->range->minlen = get_number(&optarg);
> > > -                 break;
> > > -         case 'v': /* verbose */
> > > -                 opts->verbose = 1;
> > > -                 break;
> > > -         default:
> > > -                 return EXIT_FAILURE;
> > > -         }
> > > - }
> > > -
> > > - return 0;
> > > -}
> > > -
> > > -int main(int argc, char **argv)
> > > -{
> > > - struct options *opts;
> > > - struct stat sb;
> > > - int fd, err = 0, ret = EXIT_FAILURE;
> > > -
> > > - opts = malloc(sizeof(struct options));
> > > - if (!opts)
> > > -         err_exit("%s: malloc(): %s\n", program_name, strerror(errno));
> > > -
> > > - opts->range = NULL;
> > > - opts->verbose = 0;
> > > -
> > > - if (argc > 1)
> > > -         strncpy(opts->mpoint, argv[argc - 1], sizeof(opts->mpoint));
> > > -
> > > - opts->range = calloc(1, sizeof(struct fstrim_range));
> > > - if (!opts->range) {
> > > -         fprintf(stderr, "%s: calloc(): %s\n", program_name,
> > > -                 strerror(errno));
> > > -         goto free_opts;
> > > - }
> > > -
> > > - opts->range->len = ULLONG_MAX;
> > > -
> > > - if (argc > 2)
> > > -         err = parse_opts(argc, argv, opts);
> > > -
> > > - if (err) {
> > > -         usage();
> > > -         goto free_opts;
> > > - }
> > > -
> > > - if (strnlen(opts->mpoint, 1) < 1) {
> > > -         fprintf(stderr, "%s: You have to specify mount point.\n",
> > > -                 program_name);
> > > -         usage();
> > > -         goto free_opts;
> > > - }
> > > -
> > > - if (stat(opts->mpoint, &sb) == -1) {
> > > -         fprintf(stderr, "%s: %s: %s\n", program_name,
> > > -                 opts->mpoint, strerror(errno));
> > > -         usage();
> > > -         goto free_opts;
> > > - }
> > > -
> > > - if (!S_ISDIR(sb.st_mode)) {
> > > -         fprintf(stderr, "%s: %s: (%s)\n", program_name,
> > > -                 opts->mpoint, strerror(ENOTDIR));
> > > -         usage();
> > > -         goto free_opts;
> > > - }
> > > -
> > > - fd = open(opts->mpoint, O_RDONLY);
> > > - if (fd < 0) {
> > > -         fprintf(stderr, "%s: open(%s): %s\n", program_name,
> > > -                 opts->mpoint, strerror(errno));
> > > -         goto free_opts;
> > > - }
> > > -
> > > - if (ioctl(fd, FITRIM, opts->range)) {
> > > -         fprintf(stderr, "%s: FSTRIM: %s\n", program_name,
> > > -                 strerror(errno));
> > > -         goto free_opts;
> > > - }
> > > -
> > > - if ((opts->verbose) && (opts->range))
> > > -         fprintf(stdout, "%llu Bytes were trimmed\n", (unsigned long
> > > long)opts->range->len);
> > > -
> > > - ret = EXIT_SUCCESS;
> > > -
> > > -free_opts:
> > > - if (opts) {
> > > -         if (opts->range)
> > > -                 free(opts->range);
> > > -         free(opts);
> > > - }
> > > -
> > > - return ret;
> > > -}
> > > 
> > 
> 
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