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| author | Pádraig Brady <P@draigBrady.com> | 2014-06-04 00:09:11 +0100 |
|---|---|---|
| committer | Pádraig Brady <P@draigBrady.com> | 2014-06-24 17:38:46 +0100 |
| commit | 9d736f8dbfef2b33d431dccf852dace9cfc84d59 (patch) | |
| tree | 5c3d5ff5b8e9e2d04276f389361007688f54a8e4 /NEWS | |
| parent | b7bb499496ff306d87a07ffd68c034f29b97bc37 (diff) | |
| download | coreutils-9d736f8dbfef2b33d431dccf852dace9cfc84d59.tar.xz | |
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
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 6 |
1 files changed, 4 insertions, 2 deletions
@@ -44,8 +44,10 @@ GNU coreutils NEWS -*- outline -*- [These dd bugs were present in "the beginning".] - 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".] du now silently ignores directory cycles introduced with bind mounts. |