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- Incorporate 9 bugfixes, one documentation update and two maintenance

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patches that won't harm (bnc#888215), See NEWS for specifics:
  coreutils-improve_df_--human_and_--si,_help_and_man_page.patch
  coreutils-avoid_sizeof_charPP__static_analysis_warning.patch
  coreutils-also_deduplicate_virtual_file_systems.patch
  coreutils-fix_handling_of_symlinks_in_mount_list.patch
  coreutils-ignore_non_file_system_entries_in_proc_mounts.patch
  coreutils-avoid_clang_-Wtautological-constant-out-of-range-compare_warning.patch
  coreutils-use_the_last_device_name_provided_by_the_system.patch
  coreutils-avoid_compiler_warnings_with_some_assert_implementations.patch
  coreutils-use_all_of_the_last_device_details_provided.patch
  coreutils-output_placeholder_values_for_inaccessible_mount_points.patch
  coreutils-look_for_accessible_mount_points_for_specified_devices.patch
  coreutils-report_correct_device_in_presence_of_eclipsed_mounts.patch
  coreutils-avoid_an_inconsequential_mem_leak.patch

OBS-URL: https://build.opensuse.org/package/show/Base:System/coreutils?expand=0&rev=233
This commit is contained in:
Philipp Thomas 2014-07-28 09:51:55 +00:00 committed by Git OBS Bridge
parent ad3c637e06
commit 9a063f8a1f
17 changed files with 1340 additions and 0 deletions
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186
coreutils-also_deduplicate_virtual_file_systems.patch Normal file
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@ -0,0 +1,186 @@
commit 2dc5d044a88fd64e11e35886e78b54a4a9fc2b23
Author: Pádraig Brady <P@draigBrady.com>
Date: Sat Jan 25 01:14:29 2014 +0000
df: also deduplicate virtual file systems
* src/df.c (filter_mountlist): Remove the constraint that
a '/' needs to be in the device name for a mount entry to
be considered for deduplication. Virtual file systems also
have storage associated with them (like tmpfs for example),
and thus need to be deduplicated since they will be shown
in the default df output and subject to --total processing also.
* test/df/skip-duplicates.sh: Add a test to ensure we deduplicate
all entries, even for virtual file systems. Also avoid possible
length operations on many remote file systems in the initial
check of df operation. Also avoid the assumption that "/root"
is on the same file system as "/".
* NEWS: Mention the change in behavior.
---
NEWS | 6 ++++-
src/df.c | 31 +++++++++++++----------------
tests/df/skip-duplicates.sh | 47 +++++++++++++++++++++++++++++++-------------
3 files changed, 53 insertions(+), 31 deletions(-)
Index: coreutils-8.22/NEWS
===================================================================
--- coreutils-8.22.orig/NEWS 2014-07-25 23:59:19.944878976 +0200
+++ coreutils-8.22/NEWS 2014-07-26 00:00:28.937016455 +0200
@@ -1,6 +1,10 @@
GNU coreutils NEWS -*- outline -*-
-* Noteworthy changes in release 8.22 (2013-12-13) [stable]
+ Changes done after the release of 8.22
+
+ df now correctly elides duplicates for virtual file systems like tmpfs.
+
+ Noteworthy changes in release 8.22 (2013-12-13) [stable]
** Bug fixes
Index: coreutils-8.22/src/df.c
===================================================================
--- coreutils-8.22.orig/src/df.c 2014-07-25 23:59:19.938879051 +0200
+++ coreutils-8.22/src/df.c 2014-07-25 23:59:19.944878976 +0200
@@ -630,26 +630,23 @@ filter_mount_list (void)
}
else
{
- /* If the device name is a real path name ... */
- if (strchr (me->me_devname, '/'))
+ /* If we've already seen this device... */
+ for (devlist = devlist_head; devlist; devlist = devlist->next)
+ if (devlist->dev_num == buf.st_dev)
+ break;
+
+ if (devlist)
{
- /* ... try to find its device number in the devlist. */
- for (devlist = devlist_head; devlist; devlist = devlist->next)
- if (devlist->dev_num == buf.st_dev)
- break;
+ discard_me = me;
- if (devlist)
+ /* ...let the shorter mountdir win. */
+ if ((strchr (me->me_devname, '/')
+ && ! strchr (devlist->me->me_devname, '/'))
+ || (strlen (devlist->me->me_mountdir)
+ > strlen (me->me_mountdir)))
{
- discard_me = me;
-
- /* Let the shorter mountdir win. */
- if (! strchr (devlist->me->me_devname, '/')
- || (strlen (devlist->me->me_mountdir)
- > strlen (me->me_mountdir)))
- {
- discard_me = devlist->me;
- devlist->me = me;
- }
+ discard_me = devlist->me;
+ devlist->me = me;
}
}
}
Index: coreutils-8.22/tests/df/skip-duplicates.sh
===================================================================
--- coreutils-8.22.orig/tests/df/skip-duplicates.sh 2013-12-04 15:48:30.000000000 +0100
+++ coreutils-8.22/tests/df/skip-duplicates.sh 2014-07-25 23:59:19.944878976 +0200
@@ -21,19 +21,28 @@
print_ver_ df
require_gcc_shared_
-df || skip_ "df fails"
+# We use --local here so as to not activate
+# potentially very many remote mounts.
+df --local || skip_ "df fails"
-# Simulate an mtab file with two entries of the same device number.
-# Also add entries with unstatable mount dirs to ensure that's handled.
+export CU_NONROOT_FS=$(df --local --output=target 2>&1 | grep /. | head -n1)
+test -z "$CU_NONROOT_FS" && unique_entries=1 || unique_entries=2
+
+# Simulate an mtab file to test various cases.
cat > k.c <<'EOF' || framework_failure_
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include <mntent.h>
+#define STREQ(a, b) (strcmp (a, b) == 0)
+
struct mntent *getmntent (FILE *fp)
{
+ static char *nonroot_fs;
+ static int done;
+
/* Prove that LD_PRELOAD works. */
- static int done = 0;
if (!done)
{
fclose (fopen ("x", "w"));
@@ -43,18 +52,30 @@ struct mntent *getmntent (FILE *fp)
static struct mntent mntents[] = {
{.mnt_fsname="/short", .mnt_dir="/invalid/mount/dir"},
{.mnt_fsname="fsname", .mnt_dir="/",},
- {.mnt_fsname="/fsname", .mnt_dir="/root"},
+ {.mnt_fsname="/fsname", .mnt_dir="/."},
{.mnt_fsname="/fsname", .mnt_dir="/"},
+ {.mnt_fsname="virtfs", .mnt_dir="/NONROOT"},
+ {.mnt_fsname="virtfs", .mnt_dir="/NONROOT"},
};
- if (!getenv ("CU_TEST_DUPE_INVALID") && done == 1)
+ if (done == 1)
+ {
+ nonroot_fs = getenv ("CU_NONROOT_FS");
+ if (!nonroot_fs || !*nonroot_fs)
+ nonroot_fs = "/"; /* merge into / entries. */
+ }
+
+ if (done == 1 && !getenv ("CU_TEST_DUPE_INVALID"))
done++; /* skip the first entry. */
- while (done++ <= 4)
+ while (done++ <= 6)
{
mntents[done-2].mnt_type = "-";
+ if (STREQ (mntents[done-2].mnt_dir, "/NONROOT"))
+ mntents[done-2].mnt_dir = nonroot_fs;
return &mntents[done-2];
}
+
return NULL;
}
EOF
@@ -69,22 +90,22 @@ test -f x || skip_ "internal test failur
# The fake mtab file should only contain entries
# having the same device number; thus the output should
-# consist of a header and one entry.
+# consist of a header and unique entries.
LD_PRELOAD=./k.so df >out || fail=1
-test $(wc -l <out) -eq 2 || { fail=1; cat out; }
+test $(wc -l <out) -eq $(expr 1 + $unique_entries) || { fail=1; cat out; }
# Ensure we fail when unable to stat invalid entries
LD_PRELOAD=./k.so CU_TEST_DUPE_INVALID=1 df >out && fail=1
-test $(wc -l <out) -eq 2 || { fail=1; cat out; }
+test $(wc -l <out) -eq $(expr 1 + $unique_entries) || { fail=1; cat out; }
# df should also prefer "/fsname" over "fsname"
test $(grep -c '/fsname' <out) -eq 1 || { fail=1; cat out; }
-# ... and "/fsname" with '/' as Mounted on over '/root'
-test $(grep -c '/root' <out) -eq 0 || { fail=1; cat out; }
+# ... and "/fsname" with '/' as Mounted on over '/.'
+test $(grep -cF '/.' <out) -eq 0 || { fail=1; cat out; }
# Ensure that filtering duplicates does not affect -a processing.
LD_PRELOAD=./k.so df -a >out || fail=1
-test $(wc -l <out) -eq 4 || { fail=1; cat out; }
+test $(wc -l <out) -eq 6 || { fail=1; cat out; }
# Ensure that filtering duplicates does not affect
# argument processing (now without the fake getmntent()).

44
coreutils-avoid_an_inconsequential_mem_leak.patch Normal file
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@ -0,0 +1,44 @@
commit dbd7c9452a121f948b4eabbe22e07ad13900bc9b
Author: Pádraig Brady <P@draigBrady.com>
Date: Sun Jul 13 19:16:42 2014 +0100
maint: avoid an inconsequential mem leak
* src/df.c (get_disk): Avoid an inconsequential mem leak
spotted by coverity. Also s/duplicities/duplicates/.
diff --git a/src/df.c b/src/df.c
index 063cabf..3ef5d33 100644
--- a/src/df.c
+++ b/src/df.c
@@ -44,7 +44,7 @@
proper_name ("Paul Eggert")
/* Filled with device numbers of examined file systems to avoid
- duplicities in output. */
+ duplicates in output. */
static struct devlist
{
dev_t dev_num;
@@ -604,7 +604,7 @@ excluded_fstype (const char *fstype)
}
/* Filter mount list by skipping duplicate entries.
- In the case of duplicities - based on the device number - the mount entry
+ In the case of duplicates - based on the device number - the mount entry
with a '/' in its me_devname (i.e. not pseudo name like tmpfs) wins.
If both have a real devname (e.g. bind mounts), then that with the shorter
me_mountdir wins. With DEVICES_ONLY == true (set with df -a), only update
@@ -1185,7 +1185,11 @@ get_disk (char const *disk)
{
best_match = me;
if (len == 1) /* Traditional root. */
- break;
+ {
+ free (last_device);
+ free (canon_dev);
+ break;
+ }
else
best_match_len = len;
}

42
coreutils-avoid_clang_-Wtautological-constant-out-of-range-compare_warning.patch Normal file
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@ -0,0 +1,42 @@
commit ffd1a1d8dee921e20db515e7d4b3c3e47006c8b4
Author: Pádraig Brady <P@draigBrady.com>
Date: Mon May 12 15:46:43 2014 +0100
maint: avoid clang -Wtautological-constant-out-of-range-compare warning
* src/df.c (decode_output_arg): Use only enum constants to avoid
clang "warning: comparison of constant -1 with expression of
type 'display_field_t' is always false"
diff --git a/src/df.c b/src/df.c
index a7fc57f..01ecca6 100644
--- a/src/df.c
+++ b/src/df.c
@@ -144,7 +144,8 @@ typedef enum
IAVAIL_FIELD, /* inodes available */
IPCENT_FIELD, /* inodes used in percent */
TARGET_FIELD, /* mount point */
- FILE_FIELD /* specified file name */
+ FILE_FIELD, /* specified file name */
+ INVALID_FIELD /* validation marker */
} display_field_t;
/* Flag if a field contains a block, an inode or another value. */
@@ -372,7 +373,7 @@ decode_output_arg (char const *arg)
*comma++ = 0;
/* process S. */
- display_field_t field = -1;
+ display_field_t field = INVALID_FIELD;
for (unsigned int i = 0; i < ARRAY_CARDINALITY (field_data); i++)
{
if (STREQ (field_data[i].arg, s))
@@ -381,7 +382,7 @@ decode_output_arg (char const *arg)
break;
}
}
- if (field == -1)
+ if (field == INVALID_FIELD)
{
error (0, 0, _("option --output: field %s unknown"), quote (s));
usage (EXIT_FAILURE);

35
coreutils-avoid_compiler_warnings_with_some_assert_implementations.patch Normal file
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@ -0,0 +1,35 @@
commit 1239ac573df0a699d6999aed23caaf4a0eb099df
Author: Ben Walton <bdwalton@gmail.com>
Date: Mon Jun 2 20:32:16 2014 +0100
maint: avoid compiler warnings with some assert() implementations
* src/df.c (get_dev): asssert() on Solaris 10 is not marked as
__noreturn__ and thus the compiler may think V is uninitialized
later on in the function.
* THANKS.in: Remove the now committer.
diff --git a/THANKS.in b/THANKS.in
index a92540a..6fd79d3 100644
--- a/THANKS.in
+++ b/THANKS.in
@@ -77,7 +77,6 @@ Barry Kelly http://barrkel.blogspot.com/
Bauke Jan Douma bjdouma@xs4all.nl
Ben Elliston bje@air.net.au
Ben Harris bjh21@netbsd.org
-Ben Walton bwalton@artsci.utoronto.ca
Bengt Martensson bengt@mathematik.uni-Bremen.de
Benjamin Cutler cutlerbc@simla.colostate.edu
Bernard Giroud bernard.giroud@creditlyonnais.ch
diff --git a/src/df.c b/src/df.c
index 82b0c5f..747d138 100644
--- a/src/df.c
+++ b/src/df.c
@@ -953,6 +953,7 @@ get_dev (char const *disk, char const *mount_point, char const* file,
v = NULL;
break;
default:
+ v = NULL; /* Avoid warnings where assert() is not __noreturn__. */
assert (!"bad field_type");
}

22
coreutils-avoid_sizeof_charPP__static_analysis_warning.patch Normal file
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@ -0,0 +1,22 @@
commit 02807c611efa0d2052c4d2f852a84b22c49d9e52
Author: Bernhard Voelker <mail@bernhard-voelker.de>
Date: Wed Apr 16 10:43:09 2014 +0200
maint: df: avoid sizeof(char**) static analysis warning
* src/df.c (alloc_table_row): Use the size of char** to enlarge
the table. Spotted by Coverity.
diff --git a/src/df.c b/src/df.c
index 3036c74..e763943 100644
--- a/src/df.c
+++ b/src/df.c
@@ -290,7 +290,7 @@ static void
alloc_table_row (void)
{
nrows++;
- table = xnrealloc (table, nrows, sizeof (char *));
+ table = xnrealloc (table, nrows, sizeof (char **));
table[nrows - 1] = xnmalloc (ncolumns, sizeof (char *));
}

75
coreutils-fix_handling_of_symlinks_in_mount_list.patch Normal file
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@ -0,0 +1,75 @@
commit fb902297f536df060ff10ef06bb8fe6cfe0c845e
Author: Pádraig Brady <P@draigBrady.com>
Date: Mon May 12 13:29:01 2014 +0100
df: fix handling of symlinks in mount list
The symlink handling in commit v8.21-172-g33660b4 was incomplete
in the case where there were symlinks in the mount list itself.
For example, in the case where /dev/mapper/fedora-home was in the
mount list and that in turn was a symlink to /dev/dm-2, we have:
before> df --out=source /dev/mapper/fedora-home
devtmpfs
after > df --out=source /dev/mapper/fedora-home
/dev/mapper/fedora-home
* src/df.c (get_disk): Compare canonicalized device names from
the mount list. Note we still display the non canonicalized name,
even if longer, as we assume that is the most representative.
* tests/df/df-symlink.sh: This could theoretically fail on some systems
depending on the content of the mount list, but adjust to fail on any
system where symlinks are present in the mount list for the current dir.
diff --git a/src/df.c b/src/df.c
index 2b5a54e..24897a3 100644
--- a/src/df.c
+++ b/src/df.c
@@ -1056,13 +1056,19 @@ get_disk (char const *disk)
char const *file = disk;
char *resolved = canonicalize_file_name (disk);
- if (resolved && resolved[0] == '/')
+ if (resolved && IS_ABSOLUTE_FILE_NAME (resolved))
disk = resolved;
size_t best_match_len = SIZE_MAX;
for (me = mount_list; me; me = me->me_next)
{
- if (STREQ (disk, me->me_devname))
+ /* TODO: Should cache canon_dev in the mount_entry struct. */
+ char *devname = me->me_devname;
+ char *canon_dev = canonicalize_file_name (me->me_devname);
+ if (canon_dev && IS_ABSOLUTE_FILE_NAME (canon_dev))
+ devname = canon_dev;
+
+ if (STREQ (disk, devname))
{
size_t len = strlen (me->me_mountdir);
if (len < best_match_len)
@@ -1074,6 +1080,8 @@ get_disk (char const *disk)
best_match_len = len;
}
}
+
+ free (canon_dev);
}
free (resolved);
diff --git a/tests/df/df-symlink.sh b/tests/df/df-symlink.sh
index aaed810..6d96bd2 100755
--- a/tests/df/df-symlink.sh
+++ b/tests/df/df-symlink.sh
@@ -28,4 +28,11 @@ df --out=source,target "$disk" > exp || skip_ "cannot get info for $disk"
df --out=source,target symlink > out || fail=1
compare exp out || fail=1
+# Ensure we output the same values for device nodes and '.'
+# This was not the case in coreutil-8.22 on systems
+# where the device in the mount list was a symlink itself.
+# I.E. '.' => /dev/mapper/fedora-home -> /dev/dm-2
+df --out=source,target '.' > out || fail=1
+compare exp out || fail=1
+
Exit $fail

51
coreutils-ignore_non_file_system_entries_in_proc_mounts.patch Normal file
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@ -0,0 +1,51 @@
commit cbfb34c7d32e888b39e03a51a374ed664e9fa31b
Author: Pádraig Brady <P@draigBrady.com>
Date: Mon May 12 14:49:13 2014 +0100
df: ignore non file system entries in /proc/mounts
Linux with network namespaces contains entries in /proc/mounts like:
proc net:[4026532464] proc rw,nosuid,nodev,noexec,relatime 0 0
resulting in a failure to stat 'net:[...]', inducing a warning
and an exit with failure status.
* src/df.c (get_dev): Ignore all relative mount points.
* tests/df/skip-duplicates.sh: Add an entry to test relative dirs.
diff --git a/src/df.c b/src/df.c
index 24897a3..a7fc57f 100644
--- a/src/df.c
+++ b/src/df.c
@@ -853,6 +853,11 @@ get_dev (char const *disk, char const *mount_point, char const* file,
if (!selected_fstype (fstype) || excluded_fstype (fstype))
return;
+ /* Ignore relative MOUNT_POINTs, which are present for example
+ in /proc/mounts on Linux with network namespaces. */
+ if (!force_fsu && mount_point && ! IS_ABSOLUTE_FILE_NAME (mount_point))
+ return;
+
/* If MOUNT_POINT is NULL, then the file system is not mounted, and this
program reports on the file system that the special file is on.
It would be better to report on the unmounted file system,
diff --git a/tests/df/skip-duplicates.sh b/tests/df/skip-duplicates.sh
index d872f27..44f7d4c 100755
--- a/tests/df/skip-duplicates.sh
+++ b/tests/df/skip-duplicates.sh
@@ -56,6 +56,7 @@ struct mntent *getmntent (FILE *fp)
{.mnt_fsname="/fsname", .mnt_dir="/"},
{.mnt_fsname="virtfs", .mnt_dir="/NONROOT"},
{.mnt_fsname="virtfs", .mnt_dir="/NONROOT"},
+ {.mnt_fsname="netns", .mnt_dir="net:[1234567]"},
};
if (done == 1)
@@ -68,7 +69,7 @@ struct mntent *getmntent (FILE *fp)
if (done == 1 && !getenv ("CU_TEST_DUPE_INVALID"))
done++; /* skip the first entry. */
- while (done++ <= 6)
+ while (done++ <= 7)
{
mntents[done-2].mnt_type = "-";
if (STREQ (mntents[done-2].mnt_dir, "/NONROOT"))

53
coreutils-improve_df_--human_and_--si,_help_and_man_page.patch Normal file
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@ -0,0 +1,53 @@
commit 849c1c5b16c32756e14be719855601017770e621
Author: Pádraig Brady <P@draigBrady.com>
Date: Mon Mar 3 02:49:25 2014 +0000
doc: improve df --human and --si, help and man page
* src/df.c (usage): Adjust the --human and --si descriptions
to not depend on each other. Also include an example that is
illustrative of the rounding, suffix, width, and localized fractions.
* src/system.h (emit_size_note). Adjust so that it's obvious the
description is pertaining to the input SIZE argument, and not
to any sizes that might be output by df for example.
Fixes http://bugs.gnu.org/16922
diff --git a/src/df.c b/src/df.c
index e4fafb9..3036c74 100644
--- a/src/df.c
+++ b/src/df.c
@@ -1260,15 +1260,16 @@ or all file systems by default.\n\
emit_mandatory_arg_note ();
+ /* TRANSLATORS: The thousands and decimal separators are best
+ adjusted to an appropriate default for your locale. */
fputs (_("\
-a, --all include dummy file systems\n\
-B, --block-size=SIZE scale sizes by SIZE before printing them; e.g.,\n\
'-BM' prints sizes in units of 1,048,576 bytes;\n\
see SIZE format below\n\
--total produce a grand total\n\
- -h, --human-readable print sizes in human readable format (e.g., 1K 234M 2G)\
-\n\
- -H, --si likewise, but use powers of 1000 not 1024\n\
+ -h, --human-readable print sizes in powers of 1024 (e.g., 1023M)\n\
+ -H, --si print sizes in powers of 1000 (e.g., 1.1G)\n\
"), stdout);
fputs (_("\
-i, --inodes list inode information instead of block usage\n\
diff --git a/src/system.h b/src/system.h
index 39750e8..a9588e7 100644
--- a/src/system.h
+++ b/src/system.h
@@ -549,8 +549,8 @@ static inline void
emit_size_note (void)
{
fputs (_("\n\
-SIZE is an integer and optional unit (example: 10M is 10*1024*1024). Units\n\
-are K, M, G, T, P, E, Z, Y (powers of 1024) or KB, MB, ... (powers of 1000).\n\
+The SIZE argument is an integer and optional unit (example: 10K is 10*1024).\n\
+Units are K,M,G,T,P,E,Z,Y (powers of 1024) or KB,MB,... (powers of 1000).\n\
"), stdout);
}

55
coreutils-look_for_accessible_mount_points_for_specified_devices.patch Normal file
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@ -0,0 +1,55 @@
commit 828801a174de8fa6e492f311210c37394f13b30f
Author: Pádraig Brady <P@draigBrady.com>
Date: Wed Jun 18 13:10:17 2014 +0100
df: look for accessible mount points for specified devices
* src/df.c (get_disk): Include whether we can access the mount dir,
in the mount entry selection criteria. This handles the case where
a device is (bind) mounted multiple times with the shortest mount path
not being accessible, while some of the other mount points are.
Discussed at: http://bugs.gnu.org/16539#63
diff --git a/src/df.c b/src/df.c
index d6d4b0e..dc6544b 100644
--- a/src/df.c
+++ b/src/df.c
@@ -1121,6 +1121,7 @@ get_disk (char const *disk)
{
struct mount_entry const *me;
struct mount_entry const *best_match = NULL;
+ bool best_match_accessible = false;
char const *file = disk;
char *resolved = canonicalize_file_name (disk);
@@ -1139,13 +1140,24 @@ get_disk (char const *disk)
if (STREQ (disk, devname))
{
size_t len = strlen (me->me_mountdir);
- if (len < best_match_len)
+
+ if (! best_match_accessible || len < best_match_len)
{
- best_match = me;
- if (len == 1) /* Traditional root. */
- break;
- else
- best_match_len = len;
+ struct stat disk_stats;
+ bool this_match_accessible = false;
+
+ if (stat (me->me_mountdir, &disk_stats) == 0)
+ best_match_accessible = this_match_accessible = true;
+
+ if (this_match_accessible
+ || (! best_match_accessible && len < best_match_len))
+ {
+ best_match = me;
+ if (len == 1) /* Traditional root. */
+ break;
+ else
+ best_match_len = len;
+ }
}
}

258
coreutils-output_placeholder_values_for_inaccessible_mount_points.patch Normal file
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@ -0,0 +1,258 @@
commit 9d736f8dbfef2b33d431dccf852dace9cfc84d59
Author: Pádraig Brady <P@draigBrady.com>
Date: Wed Jun 4 00:09:11 2014 +0100
df: output placeholder values for inaccessible mount points
A system provided mount entry may be unavailable due to TOCTOU race,
or if another device has been over-mounted at that position, or due to
access permissions. In all these cases output "-" placeholder values
rather than either producing an error, or in the over-mount case
outputting values for the wrong device.
* src/df.c (device_list): A new global list now updated by
filter_mount_list().
(filter_mount_list): Adjust to take a parameter as to whether
update the global mount list, or only the mount <-> device ID mapping.
(get_dev): Use the device ID mapping to ensure we're not outputting
stats for the wrong device. Also output placeholder values when we
can't access a system specified mount point.
(get_all_entries): Set the DEVICE_ONLY param for filter_mount_list().
(devname_for_dev): A new function to search the mount <-> dev mapping.
* test/df/skip-duplicates.sh: Adjust accordingly.
* NEWS: Mention the bug fixes.
Discussed at: http://bugs.gnu.org/16539
---
NEWS | 6 +-
src/df.c | 109 ++++++++++++++++++++++++++++++++------------
tests/df/skip-duplicates.sh | 6 +-
3 files changed, 89 insertions(+), 32 deletions(-)
Index: coreutils-8.22/NEWS
===================================================================
--- coreutils-8.22.orig/NEWS 2014-07-26 00:02:00.484871949 +0200
+++ coreutils-8.22/NEWS 2014-07-26 00:02:31.465484639 +0200
@@ -2,8 +2,10 @@ GNU coreutils NEWS
Changes done after the release of 8.22
- df now elides duplicates for virtual file systems like tmpfs, and will
- display the correct device name for directories mounted multiple times.
+ df now elides duplicates for virtual file systems like tmpfs.
+ Displays the correct device details for points mounted multiple times.
+ Displays placeholder values for inaccessible file systems,
+ rather than error messages or values for the wrong file system.
[These bugs were present in "the beginning".]
Noteworthy changes in release 8.22 (2013-12-13) [stable]
Index: coreutils-8.22/src/df.c
===================================================================
--- coreutils-8.22.orig/src/df.c 2014-07-26 00:02:00.468872150 +0200
+++ coreutils-8.22/src/df.c 2014-07-26 00:02:00.485871937 +0200
@@ -45,12 +45,12 @@
/* Filled with device numbers of examined file systems to avoid
duplicities in output. */
-struct devlist
+static struct devlist
{
dev_t dev_num;
struct mount_entry *me;
struct devlist *next;
-};
+} *device_list;
/* If true, show even file systems with zero size or
uninteresting types. */
@@ -607,23 +607,25 @@ excluded_fstype (const char *fstype)
In the case of duplicities - based on the device number - the mount entry
with a '/' in its me_devname (i.e. not pseudo name like tmpfs) wins.
If both have a real devname (e.g. bind mounts), then that with the shorter
- me_mountdir wins. */
+ me_mountdir wins. With DEVICES_ONLY == true (set with df -a), only update
+ the global device_list, rather than filtering the global mount_list. */
static void
-filter_mount_list (void)
+filter_mount_list (bool devices_only)
{
struct mount_entry *me;
- /* Store of already-processed device numbers. */
- struct devlist *devlist_head = NULL;
-
- /* Sort all 'wanted' entries into the list devlist_head. */
+ /* Sort all 'wanted' entries into the list device_list. */
for (me = mount_list; me;)
{
struct stat buf;
struct devlist *devlist;
struct mount_entry *discard_me = NULL;
+ /* TODO: On Linux we might avoid this stat() and another in get_dev()
+ by using the device IDs available from /proc/self/mountinfo.
+ read_file_system_list() could populate me_dev from those
+ for efficiency and accuracy. */
if (-1 == stat (me->me_mountdir, &buf))
{
/* Stat failed - add ME to be able to complain about it later. */
@@ -632,7 +634,7 @@ filter_mount_list (void)
else
{
/* If we've already seen this device... */
- for (devlist = devlist_head; devlist; devlist = devlist->next)
+ for (devlist = device_list; devlist; devlist = devlist->next)
if (devlist->dev_num == buf.st_dev)
break;
@@ -661,8 +663,9 @@ filter_mount_list (void)
if (discard_me)
{
- me = me->me_next;
- free_mount_entry (discard_me);
+ me = me->me_next;
+ if (! devices_only)
+ free_mount_entry (discard_me);
}
else
{
@@ -670,26 +673,46 @@ filter_mount_list (void)
devlist = xmalloc (sizeof *devlist);
devlist->me = me;
devlist->dev_num = buf.st_dev;
- devlist->next = devlist_head;
- devlist_head = devlist;
+ devlist->next = device_list;
+ device_list = devlist;
me = me->me_next;
}
}
/* Finally rebuild the mount_list from the devlist. */
- mount_list = NULL;
- while (devlist_head)
+ if (! devices_only) {
+ mount_list = NULL;
+ while (device_list)
+ {
+ /* Add the mount entry. */
+ me = device_list->me;
+ me->me_next = mount_list;
+ mount_list = me;
+ /* Free devlist entry and advance. */
+ struct devlist *devlist = device_list->next;
+ free (device_list);
+ device_list = devlist;
+ }
+ }
+}
+
+/* Search a mount entry list for device id DEV.
+ Return the corresponding device name if found or NULL if not. */
+
+static char const * _GL_ATTRIBUTE_PURE
+devname_for_dev (dev_t dev)
+{
+ struct devlist *dl = device_list;
+
+ while (dl)
{
- /* Add the mount entry. */
- me = devlist_head->me;
- me->me_next = mount_list;
- mount_list = me;
- /* Free devlist entry and advance. */
- struct devlist *devlist = devlist_head->next;
- free (devlist_head);
- devlist_head = devlist;
+ if (dl->dev_num == dev)
+ return dl->me->me_devname;
+ dl = dl->next;
}
+
+ return NULL;
}
/* Return true if N is a known integer value. On many file systems,
@@ -878,9 +901,40 @@ get_dev (char const *disk, char const *m
fsu = *force_fsu;
else if (get_fs_usage (stat_file, disk, &fsu))
{
- error (0, errno, "%s", quote (stat_file));
- exit_status = EXIT_FAILURE;
- return;
+ /* If we can't access a system provided entry due
+ to it not being present (now), or due to permissions,
+ just output placeholder values rather than failing. */
+ if (process_all && (errno == EACCES || errno == ENOENT))
+ {
+ if (! show_all_fs)
+ return;
+
+ fstype = "-";
+ fsu.fsu_blocksize = fsu.fsu_blocks = fsu.fsu_bfree =
+ fsu.fsu_bavail = fsu.fsu_files = fsu.fsu_ffree = UINTMAX_MAX;
+ }
+ else
+ {
+ error (0, errno, "%s", quote (stat_file));
+ exit_status = EXIT_FAILURE;
+ return;
+ }
+ }
+ else if (process_all && show_all_fs)
+ {
+ /* Ensure we don't output incorrect stats for over-mounted directories.
+ Discard stats when the device name doesn't match. */
+ struct stat sb;
+ if (stat (stat_file, &sb) == 0)
+ {
+ char const * devname = devname_for_dev (sb.st_dev);
+ if (devname && ! STREQ (devname, disk))
+ {
+ fstype = "-";
+ fsu.fsu_blocksize = fsu.fsu_blocks = fsu.fsu_bfree =
+ fsu.fsu_bavail = fsu.fsu_files = fsu.fsu_ffree = UINTMAX_MAX;
+ }
+ }
}
if (fsu.fsu_blocks == 0 && !show_all_fs && !show_listed_fs)
@@ -1230,8 +1284,7 @@ get_all_entries (void)
{
struct mount_entry *me;
- if (!show_all_fs)
- filter_mount_list ();
+ filter_mount_list (show_all_fs);
for (me = mount_list; me; me = me->me_next)
get_dev (me->me_devname, me->me_mountdir, NULL, NULL, me->me_type,
Index: coreutils-8.22/tests/df/skip-duplicates.sh
===================================================================
--- coreutils-8.22.orig/tests/df/skip-duplicates.sh 2014-07-26 00:02:00.468872150 +0200
+++ coreutils-8.22/tests/df/skip-duplicates.sh 2014-07-26 00:02:00.485871937 +0200
@@ -96,8 +96,8 @@ test -f x || skip_ "internal test failur
LD_PRELOAD=./k.so df -T >out || fail=1
test $(wc -l <out) -eq $(expr 1 + $unique_entries) || { fail=1; cat out; }
-# Ensure we fail when unable to stat invalid entries
-LD_PRELOAD=./k.so CU_TEST_DUPE_INVALID=1 df -T >out && fail=1
+# Ensure we don't fail when unable to stat (currently) unavailable entries
+LD_PRELOAD=./k.so CU_TEST_DUPE_INVALID=1 df -T >out || fail=1
test $(wc -l <out) -eq $(expr 1 + $unique_entries) || { fail=1; cat out; }
# df should also prefer "/fsname" over "fsname"
@@ -113,6 +113,8 @@ test $(grep -c 'virtfs2.*fstype2' <out)
# Ensure that filtering duplicates does not affect -a processing.
LD_PRELOAD=./k.so df -a >out || fail=1
test $(wc -l <out) -eq 6 || { fail=1; cat out; }
+# Ensure placeholder "-" values used for the eclipsed "virtfs"
+test $(grep -c 'virtfs *-' <out) -eq 1 || { fail=1; cat out; }
# Ensure that filtering duplicates does not affect
# argument processing (now without the fake getmntent()).

200
coreutils-report_correct_device_in_presence_of_eclipsed_mounts.patch Normal file
View File

@ -0,0 +1,200 @@
commit d71c12f1e4e165c7da59989b49ded2805b7977cc
Author: Pádraig Brady <P@draigBrady.com>
Date: Tue Jun 24 15:34:39 2014 +0100
df: report correct device in presence of eclipsed mounts
* src/df.c (last_device_for_mount): A new function to identify
the last device mounted for a mount point.
(get_disk): Use the above to discard mount entries for a device,
where a later mount entry uses a different device name than
that of the user specified device.
* tests/df/over-mount-device.sh: A new root test.
* tests/local.mk: Reference the new test.
* NEWS: Reword for all these related recent fixes.
Discussed at: http://bugs.gnu.org/16539#69
---
NEWS | 9 +++---
src/df.c | 42 ++++++++++++++++++++++++++++++
tests/df/over-mount-device.sh | 57 ++++++++++++++++++++++++++++++++++++++++++
tests/local.mk | 1
4 files changed, 104 insertions(+), 5 deletions(-)
Index: coreutils-8.22/NEWS
===================================================================
--- coreutils-8.22.orig/NEWS 2014-07-26 00:03:09.335011204 +0200
+++ coreutils-8.22/NEWS 2014-07-26 00:03:30.216750147 +0200
@@ -2,10 +2,11 @@ GNU coreutils NEWS
Changes done after the release of 8.22
- df now elides duplicates for virtual file systems like tmpfs.
- Displays the correct device details for points mounted multiple times.
- Displays placeholder values for inaccessible file systems,
- rather than error messages or values for the wrong file system.
+ df has more fixes related to the newer dynamic representation of file systems:
+ Duplicates are elided for virtual file systems like tmpfs.
+ Details for the correct device are output for points mounted multiple times.
+ Placeholder values are output for inaccessible file systems, rather than
+ than error messages or values for the wrong file system.
[These bugs were present in "the beginning".]
Noteworthy changes in release 8.22 (2013-12-13) [stable]
Index: coreutils-8.22/src/df.c
===================================================================
--- coreutils-8.22.orig/src/df.c 2014-07-26 00:03:09.327011304 +0200
+++ coreutils-8.22/src/df.c 2014-07-26 00:03:09.335011204 +0200
@@ -1114,6 +1114,33 @@ get_dev (char const *disk, char const *m
free (dev_name);
}
+/* Scan the mount list returning the _last_ device found for MOUNT.
+ NULL is returned if MOUNT not found. The result is malloced. */
+static char *
+last_device_for_mount (char const* mount)
+{
+ struct mount_entry const *me;
+ struct mount_entry const *le = NULL;
+
+ for (me = mount_list; me; me = me->me_next)
+ {
+ if (STREQ (me->me_mountdir, mount))
+ le = me;
+ }
+
+ if (le)
+ {
+ char *devname = le->me_devname;
+ char *canon_dev = canonicalize_file_name (devname);
+ if (canon_dev && IS_ABSOLUTE_FILE_NAME (canon_dev))
+ return canon_dev;
+ free (canon_dev);
+ return xstrdup (le->me_devname);
+ }
+ else
+ return NULL;
+}
+
/* If DISK corresponds to a mount point, show its usage
and return true. Otherwise, return false. */
static bool
@@ -1122,6 +1149,7 @@ get_disk (char const *disk)
struct mount_entry const *me;
struct mount_entry const *best_match = NULL;
bool best_match_accessible = false;
+ bool eclipsed_device = false;
char const *file = disk;
char *resolved = canonicalize_file_name (disk);
@@ -1139,9 +1167,12 @@ get_disk (char const *disk)
if (STREQ (disk, devname))
{
+ char *last_device = last_device_for_mount (me->me_mountdir);
+ eclipsed_device = last_device && ! STREQ (last_device, devname);
size_t len = strlen (me->me_mountdir);
- if (! best_match_accessible || len < best_match_len)
+ if (! eclipsed_device
+ && (! best_match_accessible || len < best_match_len))
{
struct stat disk_stats;
bool this_match_accessible = false;
@@ -1159,6 +1190,8 @@ get_disk (char const *disk)
best_match_len = len;
}
}
+
+ free (last_device);
}
free (canon_dev);
@@ -1173,6 +1206,13 @@ get_disk (char const *disk)
best_match->me_remote, NULL, false);
return true;
}
+ else if (eclipsed_device)
+ {
+ error (0, 0, _("cannot access %s: over-mounted by another device"),
+ quote (file));
+ exit_status = EXIT_FAILURE;
+ return true;
+ }
return false;
}
Index: coreutils-8.22/tests/df/over-mount-device.sh
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ coreutils-8.22/tests/df/over-mount-device.sh 2014-07-26 00:03:09.335011204 +0200
@@ -0,0 +1,57 @@
+#!/bin/sh
+# Ensure that df /dev/loop0 errors out if overmounted by another device
+
+# Copyright (C) 2014 Free Software Foundation, Inc.
+
+# 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 3 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/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ df
+require_root_
+
+cwd=$(pwd)
+cleanup_() { cd /; umount "$cwd/mnt"; umount "$cwd/mnt"; }
+
+skip=0
+
+# Create 2 file systems
+for i in 1 2; do
+ dd if=/dev/zero of=blob$i bs=8192 count=200 > /dev/null 2>&1 \
+ || skip=1
+ mkfs -t ext2 -F blob$i \
+ || skip_ "failed to create ext2 file system"
+done
+
+# Mount both at the same place (eclipsing the first)
+mkdir mnt || skip=1
+mount -oloop blob1 mnt || skip=1
+eclipsed_dev=$(df --o=source mnt | tail -n1) || skip=1
+mount -oloop blob2 mnt || skip=1
+
+test $skip = 1 \
+ && skip_ "insufficient mount/ext2 support"
+
+df . || skip_ "failed to lookup the device for the current dir"
+
+echo "df: cannot access '$eclipsed_dev': over-mounted by another device" > exp
+
+# We should get an error for the eclipsed device and continue
+df $eclipsed_dev . > out 2> err && fail=1
+
+# header and single entry in output
+test $(wc -l < out) = 2 || fail=1
+
+compare exp err || fail=1
+
+Exit $fail
Index: coreutils-8.22/tests/local.mk
===================================================================
--- coreutils-8.22.orig/tests/local.mk 2014-07-26 00:03:09.203012855 +0200
+++ coreutils-8.22/tests/local.mk 2014-07-26 00:03:09.335011204 +0200
@@ -115,6 +115,7 @@ all_root_tests = \
tests/cp/sparse-fiemap.sh \
tests/dd/skip-seek-past-dev.sh \
tests/df/problematic-chars.sh \
+ tests/df/over-mount-device.sh \
tests/du/bind-mount-dir-cycle.sh \
tests/id/setgid.sh \
tests/install/install-C-root.sh \

20
coreutils-testsuite.changes
View File

@ -1,3 +1,23 @@
-------------------------------------------------------------------
Fri Jul 25 23:48:47 CEST 2014 - pth@suse.de
- Incorporate 9 bugfixes, one documentation update and two maintenance
patches that won't harm (bnc#888215), See NEWS for specifics:
coreutils-improve_df_--human_and_--si,_help_and_man_page.patch
coreutils-avoid_sizeof_charPP__static_analysis_warning.patch
coreutils-also_deduplicate_virtual_file_systems.patch
coreutils-fix_handling_of_symlinks_in_mount_list.patch
coreutils-ignore_non_file_system_entries_in_proc_mounts.patch
coreutils-avoid_clang_-Wtautological-constant-out-of-range-compare_warning.patch
coreutils-use_the_last_device_name_provided_by_the_system.patch
coreutils-avoid_compiler_warnings_with_some_assert_implementations.patch
coreutils-use_all_of_the_last_device_details_provided.patch
coreutils-output_placeholder_values_for_inaccessible_mount_points.patch
coreutils-look_for_accessible_mount_points_for_specified_devices.patch
coreutils-report_correct_device_in_presence_of_eclipsed_mounts.patch
coreutils-avoid_an_inconsequential_mem_leak.patch
-------------------------------------------------------------------
Sun Mar 16 20:38:48 UTC 2014 - mail@bernhard-voelker.de

31
coreutils-testsuite.spec
View File

@ -142,6 +142,23 @@ Patch306: coreutils-date-avoid-crash-in-TZ-parsing.patch
# shuf --repeat no longer dumps core if the input is empty.
Patch307: coreutils-shuf-repeat-avoid-crash-when-input-empty.patch
# These arte all upstream fixes that will be part of the upcoming 8.23
# and can thus be removed on updating the package.
Patch401: coreutils-improve_df_--human_and_--si,_help_and_man_page.patch
Patch402: coreutils-avoid_sizeof_charPP__static_analysis_warning.patch
Patch403: coreutils-also_deduplicate_virtual_file_systems.patch
Patch404: coreutils-fix_handling_of_symlinks_in_mount_list.patch
Patch405: coreutils-ignore_non_file_system_entries_in_proc_mounts.patch
Patch406: coreutils-avoid_clang_-Wtautological-constant-out-of-range-compare_warning.patch
Patch407: coreutils-use_the_last_device_name_provided_by_the_system.patch
Patch408: coreutils-avoid_compiler_warnings_with_some_assert_implementations.patch
Patch409: coreutils-use_all_of_the_last_device_details_provided.patch
Patch410: coreutils-output_placeholder_values_for_inaccessible_mount_points.patch
Patch411: coreutils-look_for_accessible_mount_points_for_specified_devices.patch
Patch412: coreutils-report_correct_device_in_presence_of_eclipsed_mounts.patch
Patch413: coreutils-avoid_an_inconsequential_mem_leak.patch
# ================================================
%description
These are the GNU core utilities. This package is the union of
@ -187,6 +204,20 @@ the GNU fileutils, sh-utils, and textutils packages.
%patch306
%patch307
%patch401 -p1
%patch402 -p1
%patch403 -p1
%patch404 -p1
%patch405 -p1
%patch406 -p1
%patch407 -p1
%patch408 -p1
%patch409 -p1
%patch410 -p1
%patch411 -p1
%patch412 -p1
%patch413 -p1
#???## We need to statically link to gmp, otherwise we have a build loop
#???#sed -i s,'$(LIB_GMP)',%%{_libdir}/libgmp.a,g Makefile.in

97
coreutils-use_all_of_the_last_device_details_provided.patch Normal file
View File

@ -0,0 +1,97 @@
commit 4f8d74eb1b2ba17ef05f81c1c725e60a65cf8293
Author: Pádraig Brady <P@draigBrady.com>
Date: Tue Jun 17 00:18:47 2014 +0100
df: use all of the last device details provided
* src/df.c (filter_mount_list): Recent commit v8.22-108-g25a2c94
failed to copy file system type along with the updated device name.
Therefore simply replace the existing mount entry with the
current one with all the latest device details. Note the name,
even if not shorter in this entry, will be replaced with a shorter
name in a subsequent mount entry.
* tests/df/skip-duplicates.sh: Add a test case.
diff --git a/src/df.c b/src/df.c
index 747d138..10047ce 100644
--- a/src/df.c
+++ b/src/df.c
@@ -642,7 +642,9 @@ filter_mount_list (void)
if ((strchr (me->me_devname, '/')
&& ! strchr (devlist->me->me_devname, '/'))
|| (strlen (devlist->me->me_mountdir)
- > strlen (me->me_mountdir)))
+ > strlen (me->me_mountdir))
+ /* or one overmounted on a different device. */
+ || ! STREQ (devlist->me->me_devname, me->me_devname))
{
/* Discard mount entry for existing device. */
discard_me = devlist->me;
@@ -652,17 +654,6 @@ filter_mount_list (void)
{
/* Discard mount entry currently being processed. */
discard_me = me;
-
- /* We might still want the devname from this mount entry as
- the dev_num might not correlate with st_dev if another
- device is subsequently overmounted at mountdir, so honor
- the order of the presented list and replace with the
- latest devname encountered. */
- if (! STREQ (devlist->me->me_devname, me->me_devname))
- {
- free (devlist->me->me_devname);
- devlist->me->me_devname = xstrdup (me->me_devname);
- }
}
}
diff --git a/tests/df/skip-duplicates.sh b/tests/df/skip-duplicates.sh
index 6fb6ff5..a620e73 100755
--- a/tests/df/skip-duplicates.sh
+++ b/tests/df/skip-duplicates.sh
@@ -54,8 +54,8 @@ struct mntent *getmntent (FILE *fp)
{.mnt_fsname="fsname", .mnt_dir="/",},
{.mnt_fsname="/fsname", .mnt_dir="/."},
{.mnt_fsname="/fsname", .mnt_dir="/"},
- {.mnt_fsname="virtfs", .mnt_dir="/NONROOT"},
- {.mnt_fsname="virtfs2", .mnt_dir="/NONROOT"},
+ {.mnt_fsname="virtfs", .mnt_dir="/NONROOT", .mnt_type="fstype1"},
+ {.mnt_fsname="virtfs2", .mnt_dir="/NONROOT", .mnt_type="fstype2"},
{.mnt_fsname="netns", .mnt_dir="net:[1234567]"},
};
@@ -71,7 +71,8 @@ struct mntent *getmntent (FILE *fp)
while (done++ <= 7)
{
- mntents[done-2].mnt_type = "-";
+ if (!mntents[done-2].mnt_type)
+ mntents[done-2].mnt_type = "-";
if (STREQ (mntents[done-2].mnt_dir, "/NONROOT"))
mntents[done-2].mnt_dir = nonroot_fs;
return &mntents[done-2];
@@ -92,11 +93,11 @@ test -f x || skip_ "internal test failure: maybe LD_PRELOAD doesn't work?"
# The fake mtab file should only contain entries
# having the same device number; thus the output should
# consist of a header and unique entries.
-LD_PRELOAD=./k.so df >out || fail=1
+LD_PRELOAD=./k.so df -T >out || fail=1
test $(wc -l <out) -eq $(expr 1 + $unique_entries) || { fail=1; cat out; }
# Ensure we fail when unable to stat invalid entries
-LD_PRELOAD=./k.so CU_TEST_DUPE_INVALID=1 df >out && fail=1
+LD_PRELOAD=./k.so CU_TEST_DUPE_INVALID=1 df -T >out && fail=1
test $(wc -l <out) -eq $(expr 1 + $unique_entries) || { fail=1; cat out; }
# df should also prefer "/fsname" over "fsname"
@@ -106,8 +107,8 @@ if test "$unique_entries" = 2; then
test $(grep -cF '/.' <out) -eq 0 || { fail=1; cat out; }
fi
-# df should use the last seen devname (mnt_fsname)
-test $(grep -c 'virtfs2' <out) -eq 1 || { fail=1; cat out; }
+# df should use the last seen devname (mnt_fsname) and devtype (mnt_type)
+test $(grep -c 'virtfs2.*fstype2' <out) -eq 1 || { fail=1; cat out; }
# Ensure that filtering duplicates does not affect -a processing.
LD_PRELOAD=./k.so df -a >out || fail=1

120
coreutils-use_the_last_device_name_provided_by_the_system.patch Normal file
View File

@ -0,0 +1,120 @@
commit 25a2c948b24163ce0e0e9e52f6a5fef33d7d7842
Author: Pádraig Brady <P@draigBrady.com>
Date: Thu May 29 15:30:46 2014 +0100
df: use the last device name provided by the system
The device name reported for a particular mount entry
may no longer be valid if the mount point was subsequently
mounted on a different device. Therefore honor the order
of the mount list returned by the system and use the last
reported device name.
* src/df.c (filter_mount_list): When discarding the current
mount entry, ensure that a new device name is not also discarded.
* tests/df/skip-duplicates.sh: Add a test case. Also fix
a false failure in the edge case of a system with only a
single file system.
* NEWS: Mention the fix.
---
NEWS | 4 +++-
src/df.c | 22 +++++++++++++++++++---
tests/df/skip-duplicates.sh | 13 +++++++++----
3 files changed, 31 insertions(+), 8 deletions(-)
Index: coreutils-8.22/NEWS
===================================================================
--- coreutils-8.22.orig/NEWS 2014-07-26 00:00:59.716631657 +0200
+++ coreutils-8.22/NEWS 2014-07-26 00:01:35.008190452 +0200
@@ -2,7 +2,9 @@ GNU coreutils NEWS
Changes done after the release of 8.22
- df now correctly elides duplicates for virtual file systems like tmpfs.
+ df now elides duplicates for virtual file systems like tmpfs, and will
+ display the correct device name for directories mounted multiple times.
+ [These bugs were present in "the beginning".]
Noteworthy changes in release 8.22 (2013-12-13) [stable]
Index: coreutils-8.22/src/df.c
===================================================================
--- coreutils-8.22.orig/src/df.c 2014-07-26 00:00:59.711631720 +0200
+++ coreutils-8.22/src/df.c 2014-07-26 00:00:59.716631657 +0200
@@ -604,7 +604,7 @@ excluded_fstype (const char *fstype)
}
/* Filter mount list by skipping duplicate entries.
- In the case of duplicities - based on to the device number - the mount entry
+ In the case of duplicities - based on the device number - the mount entry
with a '/' in its me_devname (i.e. not pseudo name like tmpfs) wins.
If both have a real devname (e.g. bind mounts), then that with the shorter
me_mountdir wins. */
@@ -638,17 +638,33 @@ filter_mount_list (void)
if (devlist)
{
- discard_me = me;
-
/* ...let the shorter mountdir win. */
if ((strchr (me->me_devname, '/')
&& ! strchr (devlist->me->me_devname, '/'))
|| (strlen (devlist->me->me_mountdir)
> strlen (me->me_mountdir)))
{
+ /* Discard mount entry for existing device. */
discard_me = devlist->me;
devlist->me = me;
}
+ else
+ {
+ /* Discard mount entry currently being processed. */
+ discard_me = me;
+
+ /* We might still want the devname from this mount entry as
+ the dev_num might not correlate with st_dev if another
+ device is subsequently overmounted at mountdir, so honor
+ the order of the presented list and replace with the
+ latest devname encountered. */
+ if (! STREQ (devlist->me->me_devname, me->me_devname))
+ {
+ free (devlist->me->me_devname);
+ devlist->me->me_devname = xstrdup (me->me_devname);
+ }
+ }
+
}
}
Index: coreutils-8.22/tests/df/skip-duplicates.sh
===================================================================
--- coreutils-8.22.orig/tests/df/skip-duplicates.sh 2014-07-26 00:00:59.706631782 +0200
+++ coreutils-8.22/tests/df/skip-duplicates.sh 2014-07-26 00:00:59.716631657 +0200
@@ -55,7 +55,7 @@ struct mntent *getmntent (FILE *fp)
{.mnt_fsname="/fsname", .mnt_dir="/."},
{.mnt_fsname="/fsname", .mnt_dir="/"},
{.mnt_fsname="virtfs", .mnt_dir="/NONROOT"},
- {.mnt_fsname="virtfs", .mnt_dir="/NONROOT"},
+ {.mnt_fsname="virtfs2", .mnt_dir="/NONROOT"},
{.mnt_fsname="netns", .mnt_dir="net:[1234567]"},
};
@@ -100,9 +100,14 @@ LD_PRELOAD=./k.so CU_TEST_DUPE_INVALID=1
test $(wc -l <out) -eq $(expr 1 + $unique_entries) || { fail=1; cat out; }
# df should also prefer "/fsname" over "fsname"
-test $(grep -c '/fsname' <out) -eq 1 || { fail=1; cat out; }
-# ... and "/fsname" with '/' as Mounted on over '/.'
-test $(grep -cF '/.' <out) -eq 0 || { fail=1; cat out; }
+if test "$unique_entries" = 2; then
+ test $(grep -c '/fsname' <out) -eq 1 || { fail=1; cat out; }
+ # ... and "/fsname" with '/' as Mounted on over '/.'
+ test $(grep -cF '/.' <out) -eq 0 || { fail=1; cat out; }
+fi
+
+# df should use the last seen devname (mnt_fsname)
+test $(grep -c 'virtfs2' <out) -eq 1 || { fail=1; cat out; }
# Ensure that filtering duplicates does not affect -a processing.
LD_PRELOAD=./k.so df -a >out || fail=1

20
coreutils.changes
View File

@ -1,3 +1,23 @@
-------------------------------------------------------------------
Fri Jul 25 23:48:47 CEST 2014 - pth@suse.de
- Incorporate 9 bugfixes, one documentation update and two maintenance
patches that won't harm (bnc#888215), See NEWS for specifics:
coreutils-improve_df_--human_and_--si,_help_and_man_page.patch
coreutils-avoid_sizeof_charPP__static_analysis_warning.patch
coreutils-also_deduplicate_virtual_file_systems.patch
coreutils-fix_handling_of_symlinks_in_mount_list.patch
coreutils-ignore_non_file_system_entries_in_proc_mounts.patch
coreutils-avoid_clang_-Wtautological-constant-out-of-range-compare_warning.patch
coreutils-use_the_last_device_name_provided_by_the_system.patch
coreutils-avoid_compiler_warnings_with_some_assert_implementations.patch
coreutils-use_all_of_the_last_device_details_provided.patch
coreutils-output_placeholder_values_for_inaccessible_mount_points.patch
coreutils-look_for_accessible_mount_points_for_specified_devices.patch
coreutils-report_correct_device_in_presence_of_eclipsed_mounts.patch
coreutils-avoid_an_inconsequential_mem_leak.patch
-------------------------------------------------------------------
Sun Mar 16 20:38:48 UTC 2014 - mail@bernhard-voelker.de

31
coreutils.spec
View File

@ -142,6 +142,23 @@ Patch306: coreutils-date-avoid-crash-in-TZ-parsing.patch
# shuf --repeat no longer dumps core if the input is empty.
Patch307: coreutils-shuf-repeat-avoid-crash-when-input-empty.patch
# These arte all upstream fixes that will be part of the upcoming 8.23
# and can thus be removed on updating the package.
Patch401: coreutils-improve_df_--human_and_--si,_help_and_man_page.patch
Patch402: coreutils-avoid_sizeof_charPP__static_analysis_warning.patch
Patch403: coreutils-also_deduplicate_virtual_file_systems.patch
Patch404: coreutils-fix_handling_of_symlinks_in_mount_list.patch
Patch405: coreutils-ignore_non_file_system_entries_in_proc_mounts.patch
Patch406: coreutils-avoid_clang_-Wtautological-constant-out-of-range-compare_warning.patch
Patch407: coreutils-use_the_last_device_name_provided_by_the_system.patch
Patch408: coreutils-avoid_compiler_warnings_with_some_assert_implementations.patch
Patch409: coreutils-use_all_of_the_last_device_details_provided.patch
Patch410: coreutils-output_placeholder_values_for_inaccessible_mount_points.patch
Patch411: coreutils-look_for_accessible_mount_points_for_specified_devices.patch
Patch412: coreutils-report_correct_device_in_presence_of_eclipsed_mounts.patch
Patch413: coreutils-avoid_an_inconsequential_mem_leak.patch
# ================================================
%description
These are the GNU core utilities. This package is the union of
@ -187,6 +204,20 @@ the GNU fileutils, sh-utils, and textutils packages.
%patch306
%patch307
%patch401 -p1
%patch402 -p1
%patch403 -p1
%patch404 -p1
%patch405 -p1
%patch406 -p1
%patch407 -p1
%patch408 -p1
%patch409 -p1
%patch410 -p1
%patch411 -p1
%patch412 -p1
%patch413 -p1
#???## We need to statically link to gmp, otherwise we have a build loop
#???#sed -i s,'$(LIB_GMP)',%%{_libdir}/libgmp.a,g Makefile.in