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2012-03-06maint: refactor copy to use is_nul()Pádraig Brady
* src/dd.c: Move is_nul() from here to ... * src/system.h: ... here * src/copy.c (sparse_copy): Adjust to use the refactored is_nul()
2012-02-29doc: timeout: document the exit status when run with "-s KILL"Rodrigo Campos
* src/timeout.c (usage): Document the exit status for this case, in --help and thus in the man page. Word so that it covers both the -s9 and -k options. * doc/coreutils.texi (timeout invocation): Document the exit status for this case.
2012-02-29dd: add support for the conv=sparse optionRoman Rybalko
Notes: Small seeks are not coalesced to larger ones, like is done in cache_round() for example. conv= is used rather then oflag= for FreeBSD compatibility. * src/dd.c (final_op_was_seek): A new global boolean to flag whether the final "write" was converted to a seek. (usage): Describe the new conf=sparse option. (iwrite): Convert a write of a NUL block to a seek if requested. (do_copy): Initialize the output buffer to have a sentinel, to allow for efficient testing for NUL output blocks. If the last block in the file was converted to a seek, then convert back to a write so the size is updated. * NEWS: Mention the new feature. * tests/dd/sparse: A new test for the feature. * tests/Makefile.am: Reference the new test.
2012-02-25sort: default to physmem/8, not physmem/16Paul Eggert
* src/sort.c (default_sort_size): Don't divide advice by 2. Just divide the hard limits by 2. This matches the comments. Reported by Rogier Wolff in http://bugs.gnu.org/10877
2012-02-24doc: clarify a comment in system.hJim Meyering
* src/system.h (STRNCMP_LIT): Clarify comment. Suggested by Bruno Haible.
2012-02-20split: add the --additional-suffix optionJérémy Compostella
Add the --additional-suffix option, to append an additional static suffix to output file names. * src/split.c (next_file_name): Append suffix to output file names. (main): Handle new --additional-suffix option. * NEWS (New features): Mention it. * doc/coreutils.texi (split invocation): Mention it. * tests/split/additional-suffix: New file. Test --additional-suffix. * tests/Makefile.am (TESTS): Add it. Requested by Peng Yu, in bug 6554
2012-02-20ls: adjust errnos indicating device non support for xattrsPádraig Brady
* src/ls.c (errno_unsupported): Remove EBUSY, as this caters for the case where ACLs can't be accessed because the _file_ is locked. http://lists.gnu.org/archive/html/bug-coreutils/2005-06/msg00191.html Also ENOENT is not safe to include as you get that if the _file_ is removed between the stat() and subsequent querying of xattrs.
2012-02-18ls: cache ACL- and CAP-querying syscall failuresJim Meyering
Like the optimization to avoid always-failing getfilecon calls, this change avoids always-failing queries for whether a file has a nontrivial ACL and for whether a file has certain "capabilities". When such a query fails for one file (indicating no support), we know it will always fail that way for the affected device. With this change, we have thus eliminated nearly all failing-unsupported getxattr syscalls. * src/ls.c (has_capability) [!HAVE_CAP]: Set errno to ENOTSUP. (errno_unsupported): Expand the list of E* errno values to match that of lib/acl-internal.h's ACL_NOT_WELL_SUPPORTED macro. (file_has_acl_cache, has_capability_cache): New functions. (gobble_file): Use them in place of non-caching ones. * NEWS (Improvements): Mention it. Suggested by Sven Breuner in http://thread.gmane.org/gmane.comp.gnu.coreutils.general/2187 While eliminating most getfilecon calls saved about 33%, eliminating these other calls can save almost all of the remaining ~67% cost, on some remote file systems.
2012-02-18ls: optimize for when getfilecon would often fail (~33% perf. gain)Jim Meyering
On systems or file systems without SELinux support, all getfilecon and lgetfilecon calls would fail due to lack of support. We can non- invasively cache such failure (on most recently accessed device) and avoid the vast majority of the failing underlying getxattr syscalls. * src/ls.c (errno_unsupported): New function. (selinux_challenged_device): New file-scoped global. (getfilecon_cache, lgetfilecon_cache): New error-caching wrapper functions. (gobble_file): Use the caching wrappers, for when many *getfilecon calls would fail with ENOTSUP or EOPNOTSUPP. Suggested by Sven Breuner in http://thread.gmane.org/gmane.comp.gnu.coreutils.general/2187 Improved-by: Pádraig Brady.
2012-02-18split: support optional start value for --numeric-suffixesJérémy Compostella
Allow changing the --numeric-suffixes start number from the default of 0. * src/split.c (next_file_name): Initialize the suffix index and the output filename according to start value. (main): Check that the suffix length is large enough for the numerical suffix start value. * doc/coreutils.texi (split invocation): Mention it. * NEWS (New features): Mention it. * tests/split/numeric: New file. Test --numeric-suffixes[=FROM]. * tests/Makefile.am (TESTS): Reference the new test.
2012-02-16doc: improve 'rm -f' descriptionBernhard Voelker
* doc/coreutils.texi (rm invocation): Mention that the -f option also silences the message for missing operands, which is useful in scripts e.g., for "rm -f $file_list" when $file_list is empty. * src/rm.c (usage): Likewise. Reported by Jérémy Magrin in http://bugs.gnu.org/10819
2012-02-13dd: fix issues in the count_bytes and seek_bytes flags changePádraig Brady
These edge cases were missed in the previous commit 140eca15c. * src/dd.c (main): Include the bytes slop when truncating without further I/O. Don't invalidate the whole file cache in the case where 0 < count < ibs. * tests/dd/bytes: Change to using the independent truncate command to generate the file for comparison. Remove a redundant test case and replace with one testing the truncation only logic.
2012-02-12dd: add count_bytes, skip_bytes and seek_bytes flagsJérémy Compostella
dd now accepts the count_bytes and skip_bytes input flag and the seek_bytes output flag, to more easily allow processing portions of a file. * src/dd.c (scanargs): Compute skip_records and skip_bytes when 'skip_bytes' iflag is used. Compute max_records and max_bytes when 'count_bytes' iflag is used. Compute seek_records and seek_bytes when 'seek_bytes' oflag is used. (skip_via_lseek): Use new 'bytes' parameter and handle potential 'records' equals to zero. Update the bytes parameter when called with 'fdesc' equal to STDOUT_FILENO. Update the header comments. (dd_copy): Skip accordingly to skip_records AND skip_bytes. Count accordingly to max_records AND max_bytes. Seek on output accordingly to seek_records AND seek_bytes. * NEWS (New features): Mention it. * doc/coreutils.texi (dd invocation): Detail new flags and behaviors. * tests/dd/bytes: New file. Tests for these new flags. * tests/Makefile.am (TESTS): Add it.
2012-02-12mv: "mv A B" would sometimes succeed, yet A would remain, ...Jim Meyering
But only when both A and B were hard links to the same symlink. * src/copy.c (same_file_ok): Handle another special case: the one in which we are moving a symlink onto a hard link to itself. In this case, we must explicitly tell the caller to unlink the source file. Otherwise, at least the linux-3.x kernel rename function would do nothing, as mandated by POSIX 2008. * tests/mv/symlink-onto-hardlink-to-self: New test. * tests/Makefile.am (TESTS): Add it. * NEWS (Bug fixes): Mention it. Reported by Bernhard Voelker in http://bugs.gnu.org/10686
2012-02-06maint: add braces as requested by HACKING coding standardJérémy Compostella
* src/dd.c (dd_copy): Braces were missing for this do/while statement.
2012-01-31doc: clarify --help output for some optional argumentsPádraig Brady
* src/pr.c (usage): Fix the -S description to indicate that the argument is optional for the short option. * doc/coreutils.texi (pr invocation): Likewise. * src/od.c (usage): Fix the -S description to indicate that the argument is required for the short option. Clarify -w takes an argument and that it is optional.
2012-01-30maint: sort: remove the last uses of "'%s'" in diagnosticsJim Meyering
* src/sort.c (key_warnings): Use quote (quote_n, since there are two) rather than literal single quotes ('%s') in diagnostic.
2012-01-30mv: allow moving symlink onto same-inode dest with >= 2 hard linksJim Meyering
Normally, mv detects a few subtle cases in which proceeding with a same-file rename would, with very high probability, cause data loss. Here, we have found a corner case in which one of these same-inode tests makes mv refuse to perform a useful operation. Permit that corner case. * src/copy.c (same_file_ok): Detect/exempt this case. * tests/mv/symlink-onto-hardlink: New test. * tests/Makefile.am (TESTS): Add it. * NEWS (Bug fixes): Mention it. Initially reported by: Matt McCutchen in http://bugs.gnu.org/6960. Raised again by Anders Kaseorg due to http://bugs.debian.org/654596. Improved-by: Paul Eggert.
2012-01-27maint: use single copyright year rangeJim Meyering
Run "make update-copyright".
2012-01-26maint: remove some redundant automake _SOURCESPádraig Brady
* src/Makefile.am: Remove auto generated entries.
2012-01-25realpath: avoid the use of printfPádraig Brady
This was seen to give an 11% performance improvement. * src/realpath.c (relpath): Avoid using printf. (process_path): Likewise.
2012-01-25realpath: remove extraneous '/' for --relative-to edge casesPádraig Brady
* src/realpath.c (path_common_prefix): Be consistent and always include a leading '/' in the count returned. (relpath): Account for the change in path_common_prefix() and avoid outputting extra '/' chars in relative paths that span the root dir. * tests/misc/realpath: Add the two reported cases. Reported by Mike Frysinger
2012-01-22maint: quote 'like this' or "like this", not `like this'Paul Eggert
* doc/coreutils.texi (Formatting the file names): coreutils now quotes 'like this'. * man/help2man: * src/timeout.c (usage): Quote 'like this' in diagnostics. * HACKING, Makefile.am, NEWS, README, README-hacking, TODO, cfg.mk: * doc/Makefile.am, doc/coreutils.texi, m4/jm-macros.m4: * man/Makefile.am, man/help2man, src/Makefile.am, src/copy.h: * src/extract-magic, src/ls.c, src/pinky.c, src/pr.c, src/sort.c: * src/split.c, src/timeout.c, src/who.c, tests/dd/skip-seek-past-file: * tests/pr/pr-tests: Quote 'like this' in commentary. * cfg.mk (old_NEWS_hash): Update due to changed old NEWS.
2012-01-20stat: clarify the description of the %o stat formatPádraig Brady
* src/stat.c (usage): Indicate this is a transfer size suggestion, rather than some persistent block size. * doc/coreutils.texi (stat invocation): Likewise.
2012-01-11maint: fix minor whitespace issuesPádraig Brady
The previous commit introduced a couple of spacing issues, luckily one of which caused a test to fail. * src/stat.c (default_format): Add a space so times are aligned. * src/tr.c (string2_extentd): Remove an extraneous space.
2012-01-11maint: adjust formatting of certain continued stringsJim Meyering
Add a rule to ding any source file that has a continued string with a word in the first column of the following line. Those tend to trigger malfunction in tools that try to map an arbitrary line number to an enclosing function name. Of course, very many strings do precisely this, *when they are part of the usage function*. So we exempt the body of each usage function. * src/dircolors.c (main): Separate a long, continued string into two separately-quoted parts. * src/od.c (decode_one_format): Likewise. (decode_one_format, main): Move a space from end of preceding line to the beginning of the continued line. * src/tr.c (unquote, string2_extend, validate): Likewise. * src/seq.c (main): Split in two and use string concatenation. * src/stat.c (default_format): Use a mix of techniques. * cfg.mk (sc_prohibit_continued_string_alpha_in_column_1): New rule. Exempt three files in src: system.h, od.c, printf.c.
2012-01-09maint: src/*.[ch]: convert more `...' to '...'Jim Meyering
Run this (twice): git grep -E -l '`.+'\' src/*.[ch] \ |xargs perl -pi -e 's/`(.+?'\'')/'\''$1/'
2012-01-09maint: src/*.c: change remaining quotes (without embedded spaces)Jim Meyering
Run this (twice): git grep -E -l '`[^ ]+'\' src/*.c \ |xargs perl -pi -e 's/`([^ ]+'\'')/'\''$1/'
2012-01-09maint: convert `...' to '...' in --help outputJim Meyering
All affected lines end with \ or \n\, so run this command until it produces no new changes (4 times): git grep -E -l '`[^ ]+'\''.*\\' src \ |xargs perl -pi -e 's/`([^ ]+'\''.*\\)/'\''$1/'
2012-01-09maint: adjust quoting: emit '...', not `...' in diagnosticsJim Meyering
* src/csplit.c (parse_repeat_count, extract_regexp): As above. * src/date.c (main): Likewise. * src/ls.c (decode_switches): Likewise. * src/od.c (decode_one_format, main): Likewise. * src/pathchk.c (no_leading_hyphen): Likewise. * src/pr.c (main, getoptarg): Likewise. * src/rm.c (diagnose_leading_hyphen): Likewise. * src/sort.c (key_warnings, incompatible_options, main): Likewise. * src/stat.c (print_esc_char): Print '\x', not `\x' in diagnostic. * src/test.c (main): Likewise. * src/touch.c (main): Likewise. * src/tr.c (build_spec_list, validate, append_range): Likewise. * tests/misc/mktemp: This is an unusual case, since the affected string contains only the ` of an `...' string. So we change the long ` to a lone '. * tests/pr/pr-tests: Manual quote adapting fix-up. * tests/ln/hard-to-sym: Likewise. * tests/split/suffix-length: Likewise. * tests/mv/part-fail: Likewise. * tests/misc/chcon: Likewise. * tests/misc/stat-printf: Likewise.
2012-01-09maint: prep for global quoting changes: handle irregular cases manuallyJim Meyering
* src/chroot.c (usage): Change ``...'' to '...', and describe the default more accurately (also adding quotes): s,/bin/sh,'/bin/sh -i', * src/join.c (usage): Change ` ...'' ' to "...''". * src/fmt.c (isopen): Change `' to '` in list of bytes, so that a subsequent change can safely perform the `...' to '...' conversion. * src/truncate.c (main): Tweak quoting in comments to use '...', not `...`, for consistency with the rest of comments in coreutils.
2012-01-07maint: update quoting of "Try `prog --help'" to "Try 'prog --help'"Jim Meyering
Automatically adjust both the source (now in only one place) and all tests that expect the resulting output via this: git grep -l 'Try.*--help' src/system.h tests \ | xargs perl -pi -e 's/Try \\?`(\S+ --help)/Try '\''$1/'
2012-01-07maint: use new emit_try_help in place of equivalent fprintfJim Meyering
Run this command: perl -0777 -pi -e \ 's/fprintf \(stderr, _\("Try `%s --help.*\n.*;/emit_try_help ();/m'\ src/*.c
2012-01-07maint: factor out all `Try --help'-emitting statementsJim Meyering
* src/system.h (emit_try_help): New function.
2012-01-05split: avoid failure due to leftover 'errno' valueBruno Haible
* src/split.c (lines_chunk_split): Fix logic bug that led to unwarranted failure of "split -n l/2 /dev/zero" on NetBSD 5.1. The same would happen when splitting a growing file, where open/lseek-end gives one size, but by the time we read, there is more data available. (bytes_chunk_extract): Likewise. * NEWS (Bug fixes): Mention this. * tests/split/l-chunk: The latter case was not exercised. Add code to do that. Bug introduced with the chunk-selecting feature in v8.7-25-gbe10739. Co-authored-by: Jim Meyering <meyering@redhat.com>
2012-01-03df: work around long-named /dev/disk/by-uuid/... symlinksJim Meyering
On systems with recent kernel/tools, a symlink from /etc/mtab to /proc/mounts, and a by-UUID mount (i.e., soon, nearly everyone), you will see something like the following when running "df -hT": (this has been truncated to fit in a width-limited ChangeLog file) Filesystem Type Siz... rootfs rootfs 11G udev devtmpfs 3.8G tmpfs tmpfs 774M /dev/disk/by-uuid/828fc648-9f30-43d8-a0b1-f7096a2edb66 ext4 11G tmpfs tmpfs 1.6G /dev/sda2 ext3 494M /dev/sda5 ext4 12G /dev/sda6 ext4 9.9G Contrast that with what we're used to seeing (modulo the two entries mounted on "/", which is a separate problem): Filesystem Type Size Used Avail Use% Mounted on rootfs rootfs 11G 1.9G 8.0G 19% / udev devtmpfs 3.8G 0 3.8G 0% /dev tmpfs tmpfs 774M 376K 774M 1% /run /dev/sda3 ext4 11G 1.9G 8.0G 19% / tmpfs tmpfs 1.6G 8.0K 1.6G 1% /run/shm /dev/sda2 ext3 494M 78M 392M 17% /boot /dev/sda5 ext4 12G 7.6G 3.7G 68% /usr /dev/sda6 ext4 9.9G 6.6G 2.8G 71% /var When that long /dev/disk/by-uuid/... name is merely a symlink to a much shorter (and often more useful) device name like "/dev/sda3", and when it's part of a listing of all file systems, I would much prefer to see only the latter. Similarly, when using an encrypted root file system, you would see a name like /dev/mapper/luks-828fc648-9f30-43d8-a0b1-f7196a2edb66 pointing to say, /dev/dm-0, I prefer the shorter name. I.e., if I explicitly run "df -hT /dev/disk/by-uuid/828fc648-9f30-43d8-a0b1-f7096a2edb66", then, it's fine -- and expected -- to print to the long name. It was explicitly given. However, with no non-option argument, df should print the shorter name. Note that performing this translation at a lower level (via a change to gnulib's mountlist.c) would make it impossible to distinguish those two cases. * src/df.c: Include "canonicalize.h". (get_dev): Add a parameter, telling when we're in process-all- mount-points mode; update all callers. When true, resolve UUID-suffixed symlinks. * NEWS (Changes in behavior): Mention it. Reported by Dan Jacobson in http://bugs.gnu.org/10363
2012-01-03realpath: a new program to print the resolved pathPádraig Brady
This program is compatible with other realpath(1) implementations, and also incorporates relpath like support, through the --relative options. The relpath support was suggested by Peng Yu, who also provided an initial implemenation of that functionality. * AUTHORS: Add my name. * NEWS: Mention the new command. * README: Likewise. * doc/coreutils.texi (realpath invocation): Add realpath info. * man/Makefile.am (realpath.1): Add dependency. * man/realpath.x: New template. * man/.gitignore: Ignore generated man page. * po/POTFILES.in: Add src/realpath.c. * src/.gitignore: Exclude realpath. * src/Makefile.am (EXTRA_PROGRAMS): Add realpath. * src/realpath.c: New file. * scripts/git-hooks/commit-msg: Add realpath to the list of prefixes. * tests/Makefile.am (TESTS): Add misc/realpath. * tests/misc/realpath: New file.
2012-01-02build: tail: avoid type/format mismatch warning from gccJim Meyering
Without this change, gcc's -Werror=format would complain that the '%lx' format requires 'long unsigned int', not 'int'. * src/tail.c (fremote): Use a temporary variable.
2012-01-01maint: update all copyright year number rangesJim Meyering
Run "make update-copyright".
2011-12-30build: avoid spurious test.c warning with -Wsuggest-attribute=pureJim Meyering
* src/test.c: Add pragma to suppress gcc-4.6.2's warning that "advance" might be candidate for attribute 'pure'.
2011-12-28tail: avoid theoretically undefined behaviorJim Meyering
* src/tail.c (start_lines): Do not form potentially-invalid address. Use safe_read's return value as a pointer offset only after ensuring that it is not SAFE_READ_ERROR (size_t)(-1). Spotted by coverity. Also, move declaration of "p" to be closer to first use.
2011-12-26doc: homologize ch{con,grp,mod,own} option descriptionsPádraig Brady
* src/chgrp.c (usage): Group associated options together, to aid users. Also minimize the differences between individual messages across these four commands, to aid translators. * src/chmod.c: Likewise. * src/chown.c: Likewise. * src/chcon.c (usage): Likewise. Document the --dereference option. Suggested by Paul Eggert and Jari Aalto
2011-12-26stat,tail: recognize new FS type: pipefsJim Meyering
* src/stat.c (human_fstype) [S_MAGIC_PIPEFS]: New case. * NEWS (Bug fixes): Mention this.
2011-12-24doc: stat: clarify that %t and %T expand to the file system typeJim Meyering
* src/stat.c (usage): Mention "file system type", not just "type" for %t and %T. Do not capitalize the first letter of each description.
2011-12-23tail: with -f, use polling when a file is on an FS of unknown typeJim Meyering
Before, we would use inotify in that case, which would work as long as updates were taking place locally, but not at all when remote. Move hard-coded list of known remote FS types into a more maintainable table in stat.c, alongside the list of FS names and magic numbers. Generate a new is_local_fs_type function. * src/Makefile.am (fs-is-local.h): New rule, generated file. * src/extract-magic: Revamp to parse local/remote keyword after each magic number in src/stat.c's case statements. Accept new --local option. * src/.gitignore: Ignore the generated fs-is-local.h. * src/tail.c [HAVE_INOTIFY]: Include fs-is-local.h. (fremote) [HAVE_INOTIFY]: Use the new function in place of the switch stmt with hard-coded list of FS types. Emit a warning when processing a file on a file system of unknown type. * NEWS (Changes in behavior): Mention it. Suggested by Sven Breuner.
2011-12-22tail,stat: add support for FhGFSJim Meyering
* src/stat.c (human_fstype): Add a case: fhgfs, 0x19830326. * src/tail.c (fremote): Add S_MAGIC_FHGFS. * NEWS (Bug fixes): Update the entry for GPFS to mention FhGFS, too. Reported by Sven Breuner.
2011-12-14du: -x should not count files in other file systemsPaul Eggert
This fixes Bug#10293, which I guess was introduced in commit 95c948b06a dated 2003-10-02. * NEWS: Document fix. * src/du.c (process_file): Don't count files in different file systems if -x is given. * tests/du/one-file-system: Test for this bug.
2011-12-12ls: give a more useful diagnostic for a bogus --time-style argJim Meyering
* src/ls.c (decode_switches): Replace our use of XARGMATCH with open-coded version so that we can give a better diagnostic. * tests/ls/time-style-diag: New file. * tests/Makefile.am (TESTS): Add it. Reported by Dan Jacobson in http://bugs.gnu.org/10253 with suggestions from Eric Blake and Paul Eggert.
2011-12-09maint: remove a misleading comment from shred.cJim Meyering
* src/shred.c: Remove obsolete TODO comment. The first two and the last item were done, adding --recursive (-r) is neither necessary nor appropriate, and I don't want to add --interactive. I don't see a need for the others. Prompted by comments from Amr Ali.
2011-12-08ls: be responsive to interrupts when color-listing large directoriesJim Meyering
Starting with commit adc30a83, when using --color, ls inhibited interrupts to avoid corrupting the state of an output terminal. However, for very large directories, that inhibition rendered ls uninterruptible for too long, including a potentially long period even before any output is generated. * src/ls.c: Two phases of processing are time-consuming enough that they can provoke this: the readdir loop and the printing loop. The printing was supposed to be covered by a call to process_signals in (print_name_with_quoting): ... but that call was mistakenly guarded by a condition that might be false for many or even all files being processed. Call process_signals unconditionally. (print_dir): Also call process_signals in the readdir loop. * NEWS (Bug fixes): Mention it. Reported by Arkadiusz Miśkiewicz in http://bugs.gnu.org/10243 Co-authored-by: Eric Blake <eblake@redhat.com>