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| author | Paul Eggert <eggert@cs.ucla.edu> | 2014-10-07 16:46:08 -0700 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2014-10-07 16:47:37 -0700 |
| commit | 2662702b9e8643f62c670bbf2fa94b1be1ccf9af (patch) | |
| tree | c82775c20abc304fa4f187218830dc3aa2f7e481 /NEWS | |
| parent | b020002b4bfae55d5bbcf66bd7ce787a4e6da689 (diff) | |
| download | coreutils-2662702b9e8643f62c670bbf2fa94b1be1ccf9af.tar.xz | |
wc: don't miscount /sys and similar file systems
Fix similar problems in head, od, split, tac, and tail.
Reported by George Shuklin in: http://bugs.gnu.org/18621
* NEWS: Document this.
* src/head.c (elseek): Move up.
(elide_tail_bytes_pipe, elide_tail_lines_pipe): New arg
CURRENT_POS. All uses changed.
(elide_tail_bytes_file, elide_tail_lines_file):
New arg ST and remove arg SIZE. All uses changed.
* src/head.c (elide_tail_bytes_file):
* src/od.c (skip): Avoid optimization for /sys files, where
st_size is bogus and st_size == st_blksize.
Don't report error at EOF when not optimizing.
* src/head.c, src/od.c, src/tail.c: Include "stat-size.h".
* src/split.c (input_file_size): New function.
(bytes_split, lines_chunk_split, bytes_chunk_extract): New arg
INITIAL_READ. All uses changed. Use it to double-check st_size.
* src/tac.c (tac_seekable): New arg FILE_POS. All uses changed.
(copy_to_temp): Return size of temp file. All uses changed.
* src/tac.c (tac_seekable):
* src/tail.c (tail_bytes):
* src/wc.c (wc):
Don't trust st_size; double-check by reading.
* src/wc.c (wc): New arg CURRENT_POS. All uses changed.
* tests/local.mk (all_tests): Add tests/misc/wc-proc.sh,
tests/misc/od-j.sh, tests/tail-2/tail-c.sh.
* tests/misc/head-c.sh:
* tests/misc/tac-2-nonseekable.sh:
* tests/split/b-chunk.sh:
Add tests for problems with /proc and /sys files.
* tests/misc/od-j.sh, tests/misc/wc-proc.sh, tests/tail-2/tail-c.sh:
New files.
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 3 |
1 files changed, 3 insertions, 0 deletions
@@ -12,6 +12,9 @@ GNU coreutils NEWS -*- outline -*- file types, a warning is issued for source directories with duplicate names, or with -H the directory is copied again using the symlink name. + head, od, split, tac, tail, and wc no longer mishandle input from files in + /proc and /sys file systems that report somewhat-incorrect file sizes. + ** New features chroot accepts the new --skip-chdir option to not change the working directory |