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1801 Commits

Author SHA1 Message Date
Pádraig Brady
0e997681d4 ls: allow -w0 to mean no limit on line length
* src/ls.c (print_with_separator): Renamed from print_with_commas,
and parameterized to accept the separator to print.
Also fix an edge case where '\n' not printed when
the POS variable overflows SIZE_MAX.
(print_current_files): Degenerate -x and -C to using the
cheaper print_with_separator() in the -w0 case.
* doc/coreutils.texi (ls invocation): Document the new feature.
* tests/ls/w-option.sh: A new test.
* tests/local.mk: Reference the new test.
* NEWS: Mention the improvement.
Fixes http://bugs.gnu.org/21325
2015-10-21 01:40:02 +01:00
Pádraig Brady
07b73c689d factor: remove unreachable SQUFOF code at compile time
It was a little confusing as to whether the SQUFOF algorithm was
enabled, and in fact there were no options available to enable it.
Therefore clarify the 3 configurable behaviors for the code to
3 defines at the top of the program, and only include the SQUFOF
code if enabled at compile time.

$ size src/factor-before
   text    data     bss
  93997    1412    2504
$ size src/factor-after
   text    data     bss
  87885    1404    2504

* src/factor.c: Only include the SQUFOF factor code
when enabled via the USE_SQUFOF define.
* doc/coreutils.texi (factor invocation): Update note about
factor limits, as we can factor 128 bit numbers without GMP.
2015-10-19 10:24:12 +01:00
Paul Eggert
0cb602e33a doc: remove obsolete performance comment
sha512sum can be faster than sha256sum.
E.g., ‘dd if=/dev/zero bs=1024k count=1024 | time sha256sum’
reports 8.16 user CPU seconds on my host, whereas sha512sum
consumes 5.45 seconds (Fedora x86-64 on an AMD Phenom II X4 910e).
Although sha512sum is still considerably slower on x86, a good
chunk of uses are on 64-bit hosts and anyway there’s little point
to scaring people away from sha512sum nowadays.
* doc/coreutils.texi (sha2 utilities): Remove obsolete comment.
2015-10-16 12:07:07 -07:00
Paul Eggert
e4d8c99436 shred: don’t document -NUMBER option
The -NUMBER option was removed from ‘shred’ in 1999, but the
manual wasn’t updated to match.  Problem reported by Nick Rose in:
http://bugs.gnu.org/21502
* doc/coreutils.texi (shred invocation):
Remove documentation for -NUMBER option.
2015-09-17 00:38:13 -07:00
Pádraig Brady
89c517d9e2 base32: A new program similar to base64
Suggested in https://bugzilla.redhat.com/1250113

* AUTHORS: Add base32.
* THANKS.in: Add suggester.
* README: Reference the new program.
* NEWS: Mention the new program.
* src/.gitignore: Ignore the new binary.
* bootstrap.conf: Reference the gnulib base32 module.
* build-aux/gen-lists-of-programs.sh: Add base32.
* man/base32.x: A new template.
* man/.gitignore: Ignore the new man page.
* man/local.mk: Reference the new man page.
* doc/coreutils.texi (base32 invocation): Document the new command.
* src/local.mk: Adjust to build base32 based on base64.c.
* src/base64.c: Parameterize to use the correct headers,
functions and buffer sizes, depending on which binary
is being built.
* tests/misc/base64.pl: Adjust to test both base32 and base64.
* tests/misc/tty-eof.pl: Add base32 as a program that
accepts input on stdin without any options specified.
* scripts/git-hooks/commit-msg: Add base32 to the template.
2015-09-03 00:33:19 +01:00
Pádraig Brady
da5505dd7f doc: clarify where ambiguous if short options take no param
* doc/coreutils.texi (split invocation): Clarify that -d takes no param.
(uniq invocation): Likewise for -D.
(shred invocation): Likewise for -u.
(tee invocation): Likewise for -p.
2015-08-27 16:12:58 +01:00
Pádraig Brady
6d67649d86 doc: discourage use of uname -i and -p options
* src/uname.c (usage): State that the non POSIX -i and -p options
are non-portable.
* doc/coreutils.texi (uname invocation): Mention the discrepancies
even across GNU/Linux distros, and that the results should
be used as informational only, rather than impacting any
logic decisions.
Fixes http://bugs.gnu.org/13001
2015-07-22 01:55:14 +01:00
Peter Bray
a652e7b63e tests: avoid test warning with perl >= 5.22
* doc/local.mk (sc-lower-case-var): Escape a literal
left curly bracket, needed with perl >= 5.22
Fixes http://bugs.gnu.org/21060
2015-07-15 11:39:49 +01:00
Pádraig Brady
53883af063 doc: list numfmt in the main menu with "Numeric operations"
* doc/coreutils.texi (main menu): Add numfmt.
2015-06-22 17:56:48 +01:00
Pádraig Brady
0a279f6190 numfmt: support user specified output precision
* src/numfmt.c (usage): Update the --format description
to indicate precision is allowed.
(parse_format_string): Parse a precision specification
like the standard printf does.
(double_to_human): Honor the precision in --to mode.
* tests/misc/numfmt.pl: New tests.
* doc/coreutils.texi (numfmt invocation): Mention the new feature.
* NEWS: Likewise.
2015-06-21 04:16:29 +01:00
Dylan Cali
71063bc858 numfmt: implement support for field ranges
* src/numfmt.c: Replace field handling code with logic that understands
field range specifiers.  Instead of processing a single field and
printing line prefix/suffix around it, process each field in the line
checking whether it has been included for conversion.  If so convert and
print, otherwise just print the unaltered field.
(extract_fields): Removed.
(skip_fields): Removed.
(process_line): Gutted and heavily reworked.
(process_suffixed_number): FIELD is now passed as an arg instead of
using a global.
(parse_field_arg): New function that parses field range specifiers.
(next_field): New function that returns pointers to the next field in
a line.
(process_field): New function that wraps the field conversion logic
(include_field): New function that checks whether a field should be
converted
(compare_field): New function used for field value comparisons in a
gl_list.
(free_field): New function used for freeing field values in a gl_list.
Global variable FIELD removed.
New global variable all_fields indicates whether all fields should be
processed.
New global variable all_fields_after stores the first field of a N-
style range.
New global variable all_fields_before stores the last field of a -M
style range.
New global variable field_list stores explicitly specified fields to
process (N N,M or N-M style specifiers).
(usage): Document newly supported field range specifiers.
* bootstrap.conf: Include xlist and linked-list modules.  numfmt now
uses the gl_linked_list implementation to store the field ranges.
* tests/misc/numfmt.pl: Add tests for 'cut style' field ranges.
Adjust existing tests as partial output can occur before an error
Remove test for the 'invalid' field -5.. this is now a valid range.
* gnulib: update to avoid compiler warnings in linked-list.
* NEWS: Mention the new feature.
2015-06-19 19:59:21 +01:00
Pádraig Brady
6fadd46acd numfmt: handle suffixes consistently with --{from,to}-unit
* src/numfmt.c (unit_to_umax): Support SI (power of 10) suffixes
with the --from-unit and --to-unit options.  Treat suffixes like
is done with --from=auto, which for example will change the meaning
of --to-unit=G to that of --to-unit=Gi.  The suffix support was
previously undocumented and it's better to avoid the traditional
coreutils suffix handling in numfmt by default.
* doc/coreutils.texi: Document the new behavior.  Also fix a typo
mentioning {from,to}=units=.
* tests/misc/numfmt.pl: Adjust accordingly.
* NEWS: Mention the change in behavior.
2015-06-19 14:50:34 +01:00
Pádraig Brady
45b8fe430d timeout: with --foreground don't send SIGCONT
* src/timeout.c (cleanup): Don't send SIGCONT to the monitored program
when --foreground is specified, as it's generally not needed for
foreground programs, and can cause intermittent signal delivery
issues with monitors like GDB for example.
* doc/coreutils.texi (timeout invocation): Mention that SIGCONT
is not sent with --foreground.
* NEWS: Mention the behavior change.
2015-05-13 13:48:56 +01:00
Pádraig Brady
703747f892 split: auto set suffix len for --numeric-suffixes=<N --number=N
Supporting `split --numeric-suffixes=1 -n100` for example.

* doc/coreutils.texi (split invocation): Mention the two
use cases for the FROM parameter, and the consequences on
the suffix length determination.
* src/split.c (set_suffix_length): Use the --numeric-suffixes
FROM parameter in the suffix width calculation, when it's
less than the number of files specified in --number.
* tests/split/suffix-auto-length.sh: Add test cases.
Fixes http://bugs.gnu.org/20511
2015-05-13 12:43:40 +01:00
Assaf Gordon
79111d1553 doc: clarify the operation of wc -L
* src/wc.c (usage): State that it calculates display width.
* doc/coreutils.texi (wc invocation): Detail the distinct
items used to determine the display width.
2015-05-13 02:54:19 +01:00
Michael Witten
02f678a350 doc: fix grammar issue in truncate info
* doc/coreutils.texi (truncate invocation): The word 'their' is
incorrect; 'each file' is the antecedent, and is singular,
so 'its' is the correct pronoun.
2015-04-23 20:13:50 +01:00
Andreas Gruenbacher
88e491044b doc: clarify how cp behaves with default ACLs
* doc/coreutils.texi (cp invocation): Mention that when copying files
without preserving permissions, the umask or a default ACL affect
the mode of new files.
* THANKS.in: Remove committer.
Related to http://bugs.gnu.org/8527
2015-04-13 09:39:37 +01:00
Mitchel Humpherys
74bf6670eb doc: correct pluralization for mkfifo and mknod
* doc/coreutils.texi: `mkfifo' and `mknod' use the optContext macro
which adds a description for the SELinux security context in addition to
the single option already described in each case.  The result in both
cases is two options being introduced as `option' (singular).  Fix this
by introducing them as `options' (plural).
2015-04-09 08:49:34 +02:00
Pádraig Brady
52209ee547 doc: move numfmt info to the 'Numeric operations' section
* doc/coreutils.texi: Move numfmt info to this section,
as numfmt functionality aligns more with seq and factor,
than fmt and pr etc.
2015-03-29 02:44:57 +01:00
Paul Eggert
9b2782ca6d nohup: clarify stdin redirection
Problem reported by Isaac Schwabacher in:
http://bugs.gnu.org/20214
* doc/coreutils.texi (nohup invocation): Clarify that when nohup's
stdin gets redirected, it's unreadable.
* doc/coreutils.texi (nohup invocation):
* src/nohup.c (usage): Don't promise /dev/null.
2015-03-27 15:02:35 -07:00
Pádraig Brady
5e9c277f99 tee: generalize the --write-error option to --output-error
Adjust commit v8.23-140-gfdd6ebf to add the --output-error option
instead of --write-error, and treat open() errors like write() errors.

* doc/coreutils.texi (tee invocation): s/write-error/output-error/.
* src/tee.c (main): Exit on open() error if appropriate.
* tests/misc/tee.sh: Add a case to test open() errors.
* NEWS: Adjust for the more general output error behavior.

Suggested by Bernhard Voelker.
2015-03-04 13:24:21 +00:00
Pádraig Brady
fdd6ebf0ae tee: add --write-error to control handling of closed pipes
tee is very often used with pipes and this gives better control
when writing to them.  There are 3 classes of file descriptors
that tee can write to: files(1), pipes(2), and early close pipes(3).
Handling write errors to 1 & 2 is supported at present with the caveat
that failure writing to any pipe will terminate tee immediately.
Handling write errors to type 3 is not currently supported.
To improve the supported combinations we add these options:

 --write-error=warn
   Warn if error writing any output including pipes.
   Allows continued writing to still open files/pipes.
   Exit status is failure if any output had error.
 --write-error=warn-nopipe, -p
   Warn if error writing any output except pipes.
   Allows continued writing to still open files/pipes.
   Exit status is failure if any non pipe output had error.
 --write-error=exit
   Exit if error writing any output including pipes.
 --write-error=exit-nopipe
   Exit if error writing any output except pipes.

Use the "nopipe" variants when files are of types 1 and 3, otherwise
use the standard variants with types 1 and 2.  A caveat with the above
scheme is that a combination of pipe types (2 & 3) is not supported
robustly.  I.e. if you use the "nopipe" variants when using both type
2 and 3 pipes, then any "real" errors on type 2 pipes will not be
diagnosed.
  Note also a general issue with type 3 pipes that are not on tee's
stdout, is that shell constructs don't allow to distinguish early
close from real failures.  For example `tee >(head -n1) | grep -m1 ..`
can't distinguish between an error or an early close in "head" pipe,
while the fail on the grep part of the pipe is distinguished
independently from the resulting pipe errors.  This is a general
issue with the >() construct, rather than with tee itself.

* NEWS: Mention the new feature.
* doc/coreutils.texi (tee invocation): Describe the new option.
* src/tee.c (usage): Likewise.
(main): With --write-error ignore SIGPIPE, and handle
the various exit, diagnostics combinations.
* tests/misc/tee.sh: Tess all the new options.
Fixes http://bugs.gnu.org/11540
2015-02-24 18:12:22 +00:00
Bernhard Voelker
7ceaf1d975 tee: treat '-' operand as file name as mandated by POSIX
Since v5.2.1-1247-g8dafbe5, tee(1) treated '-' as stdout while POSIX
explicitly requires to treat this as a file name.  Revert this change,
as the interleaved output - due to sending another copy of input to
stdout - is not considered to be useful.  Discussed in
http://lists.gnu.org/archive/html/coreutils/2015-02/msg00085.html

* src/tee.c (tee_files): Remove the special handling for "-" operands.
(usage): Remove the corresponding sentence.
* doc/coreutils.texi (common options): Remove the "tee -" example.
(tee invocation): Document that tee(1) now treats "-" as a file name.
* tests/misc/tee.sh: Add a test case for "tee -".
While at it, re-indent the above multi-argument processing case and
extend that to 13 operands, as POSIX mandates that, too.
* tests/misc/tee-dash.sh: Remove now-obsolete test.
* tests/local.mk (all_tests): Remove the above test.
* NEWS (Changes in behavior): Mention the change.
2015-02-20 14:00:41 +01:00
Pádraig Brady
7577d1582b build: update to latest gnulib
This includes a change to require --with-libmount
to be used with configure, due to the many libmount dependencies.

* bootstrap: Sync with gnulib to exit early on gnulib-tool error.
* gl/lib/tempname.c.diff: Adjust for gnulib changes.
* gl/lib/tempname.h.diff: Likewise.
* gl/modules/tempname: Likewise.
* doc/.gitignore: Add new gendocs_template_min gnulib script.
2015-02-11 03:58:55 +00:00
Pádraig Brady
430bda3733 doc: give an example of using a seed for random operations
* doc/coreutils.texi (Random sources):  Give an example using openssl,
generating a reproducible arbitrary amount of randomly distributed
data, given a seed value.
2015-02-11 00:31:39 +00:00
Bernhard Voelker
a5c8cdff03 doc,maint: fix use of "i.e." in documentation and comments
To align with all other places (and correct grammar), change all
upper-case "I.E." to "I.e.".  Furthermore, ensure that "i.e." is
followed by a comma.  Finally, ensure to use a double-space before
"I.e.," at the beginning of a sentence.

The following was used to change all offending uses (apart from
old ChangeLog files):

  $ git grep -liF 'i.e.' \
      | xargs sed -i \
            -e 's/I\.E\./I.e./g' \
            -e 's/\. \(I\.e\.\)/.  \1/g' \
            -e 's/\([Ii]\.e\.\)\( \)/\1,\2/g' \
            -e 's/\([Ii]\.e\.\)$/\1,/g'

* cfg.mk (sc_prohibit_uppercase_id_est): Add new rule.
(sc_ensure_double_space_after_dot_before_id_est): Likewise.
(sc_ensure_comma_after_id_est): Likewise.
(old_NEWS_hash): Refresh hash via "make update-NEWS-hash".
* NEWS: Change use of "id est" abbreviation via the above command.
* README: Likewise.
* README-prereq: Likewise.
* doc/coreutils.texi: Likewise.
* gl/lib/rand-isaac.c: Likewise.
* gl/lib/tempname.c.diff: Likewise.
* man/stdbuf.x: Likewise.
* src/cat.c: Likewise.
* src/copy.c: Likewise.
* src/copy.h: Likewise.
* src/cp.c: Likewise.
* src/cut.c: Likewise.
* src/dd.c: Likewise.
* src/df.c: Likewise.
* src/fiemap.h: Likewise.
* src/longlong.h: Likewise.
* src/ls.c: Likewise.
* src/numfmt.c: Likewise.
* src/pr.c: Likewise.
* src/shred.c: Likewise.
* src/shuf.c: Likewise.
* src/split.c: Likewise.
* tests/Coreutils.pm: Likewise.
* tests/df/df-symlink.sh: Likewise.
* tests/df/skip-rootfs.sh: Likewise.
* tests/init.sh: Likewise.
* tests/ls/color-norm.sh: Likewise.
* tests/misc/basename.pl: Likewise.
* tests/misc/ls-misc.pl: Likewise.
* tests/misc/md5sum-bsd.sh: Likewise.
* tests/misc/shred-exact.sh: Likewise.
* tests/misc/sort.pl: Likewise.
* tests/misc/stdbuf.sh: Likewise.
* tests/misc/tac-continue.sh: Likewise.
* tests/rm/r-root.sh: Likewise.
* tests/tail-2/symlink.sh: Likewise.
2015-01-31 17:39:04 +01:00
Pádraig Brady
ecc8f81048 doc: clarify the output format for the *sum utilities
* src/md5sum.c (usage): Detail the reasons for the default
double space between checksum and file name.
* doc/coreutils.texi (md5sum invocation): Likewise.
Explicitly mention the 3 formats that --check supports.

Fixes http://bugs.gnu.org/19725
2015-01-29 19:06:57 +00:00
Giuseppe Scrivano
8b2bf5295f sync: support syncing specified arguments
* m4/jm-macros.m4 (coreutils_MACROS): Check for syncfs().
* man/sync.x: Add references to syncfs, fsync and fdatasync.
* doc/coreutils.texi (sync invocation): Document the new feature.
* src/sync.c: Include "quote.h".
(AUTHORS): Include myself.
(MODE_FILE, MODE_DATA, MODE_FILE_SYSTEM, MODE_SYNC): New enum values.
(long_options): Define.
(sync_arg): New function.
(usage): Describe that arguments are now accepted.
(main): Add arguments parsing and add support for fsync(2),
fdatasync(2) and syncfs(2).
* tests/misc/sync.sh: New (and only) test for sync.
* tests/local.mk: Reference the new test.
* AUTHORS: Add myself to sync's authors.
* NEWS: Mention the new feature.
2015-01-28 10:50:45 +00:00
Pádraig Brady
564f84a91a stty: only print supported options for combined options
* src/stty.c (usage): Don't reference unsupported options,
in the combined options descriptions.
* doc/coreutils.texi (stty invocation): Adjust for the
new order of the 'sane' and 'raw' combined options.
Also add -iutf8 to the 'sane' list.
2015-01-24 01:07:00 +00:00
Pádraig Brady
c6a722946d stty: document the 'status' character where supported
* src/stty.c (usage): On systems that support this setting (BSD),
display 'status' in the list of adjustable special characters.
* doc/coreutils.texi (stty invocation): Mention the option, and that
it's not currently supported on Linux.
2015-01-24 01:07:00 +00:00
Pádraig Brady
81e5b59d8c stty: document the 'discard' character setting
The equivalent of this is 'flush', but that was never documented
as an option (though was output with stty -a).  Therefore use
the more descriptive name, also generally used on BSD systems.
Note even though this setting seems ineffective on Linux, supporting
the setting is useful to allow terminal programs to receive
the default ^O character code.

* doc/coreutils.texi (stty invocation): Document the 'discard' option.
* src/stty.c (struct control_info): Add 'discard'; same as 'flush'.
(display_all): Show 'discard' rather than 'flush' char.
(display_changed): Likewise.
(usage): Document the 'discard' option.
2015-01-24 01:06:59 +00:00
Pádraig Brady
ed38d9d1ce stty: add support for extproc/LINEMODE
Add support for the "extproc" option which is well described at:
http://lists.gnu.org/archive/html/bug-readline/2011-01/msg00004.html

* src/stty.c (usage): Describe the extproc option if either the
Linux EXTPROC local option is defined, or the equivalent
BSD TIOCEXT ioctl is defined.
(main): Make the separate ioctl call for extproc on BSD.
* doc/coreutils.texi (stty invocation): Describe the option,
and reference the related RFC 1116.
* NEWS: Mention the new feature.
2015-01-24 01:06:59 +00:00
Assaf Gordon
4c795d5439 split: new -t option to select record separator
* src/split.c (eolchar): A new variable to hold
the separator character (unibyte for now).
This is reference throughout rather than hardcoding '\n'.
(usage): Describe the new --separator option, and
mention records along with lines so there is no ambiguity
that all options treat lines and records equivalently.
(main): Have -t update eolchar, or default to '\n'.
* tests/split/record-sep.sh: New test case.
* tests/local.mk: Reference the new test.
* doc/coreutils.texi (split invocation): Document the new option.
Adjust --lines, --line-bytes, --number=[lr]/... to mention
they pertain to records if --separator is specified.
* NEWS: Mention the new feature.
2015-01-19 23:22:37 +00:00
Pádraig Brady
4c77bd23e8 doc: clarify that du operands are interdependent
Following on from http://bugs.gnu.org/17546
make it more obvious that du may elide specified operands
to avoid double counting in the set.

* src/du.c (usage): Specify that du operates on the set of
operands, rather than each independently.
* doc/coreutils.texi (du invocation): Likewise.  Also state
that the number of entries printed may change due to the
order specified.  Currently, deeper items specified earlier
will result in them being displayed, but don't mention that
implementation detail in the documentation.
* THANKS.in: Add reporter.
Reported by Stephen Shirley
2015-01-19 11:10:02 +00:00
Pádraig Brady
e0afeb0099 maint: update all copyright year number ranges
Run "make update-copyright" and then...

* tests/sample-test: Adjust to use the single most recent year.
* tests/du/bind-mount-dir-cycle-v2.sh: Fix case in copyright message,
so that year is updated automatically in future.
2015-01-01 04:52:17 +00:00
Pádraig Brady
4111d3e4e0 doc: update the URL referencing SI prefixes
Identified at https://www.gnu.org/software/gnun/linc/linc.html

* doc/coreutils.texi (Block size): Fix the stale link.
2014-12-26 14:44:44 +00:00
Pádraig Brady
2e81e62243 df: only suppress remote mounts of separate exports with --total
* src/df.c (filter_mount_list): Separate remote locations are
generally explicitly mounted, so list each even if they share
the same remote device and thus storage.  However with --total
keep the suppression to give a more accurate value for the
total storage available.
(usage): Expand on the new implications of --total and move
it in the options list according to alphabetic order.
doc/coreutils.texi (df invocation): Mention that --total impacts
on deduplication of remote file systems and also move location
according to alphabetic order.
* tests/df/skip-duplicates.sh: Add remote test cases.
* NEWS: Mention the change in behavior.

Reported in http://bugs.debian.org/737399
Reported in http://bugzilla.redhat.com/920806
Reported in http://bugzilla.opensuse.org/866010
Reported in http://bugzilla.opensuse.org/901905
2014-11-24 09:04:54 +00:00
Pádraig Brady
57c8196ef6 doc: mention how to avoid newlines impacting ls -1
* src/ls.c (usage): Mention the -b and -q options
in the -1 description.
* doc/coreutils.texi (ls invocation): Likewise.
2014-11-21 16:25:42 +00:00
Pádraig Brady
097897bd2c doc: mention that df -a includes duplicate file systems
* src/df.c (usage): Mention that duplicate file systems are shown
with this option, not just dummy file systems.
* doc/coreutils.texi (df invocation): For the --all option, expand
on the class of normally suppressed mount entries that it includes.

Reported in http://bugs.debian.org/737399
2014-10-27 14:12:17 +00:00
Bernhard Voelker
b020002b4b doc: document stat's output with the --terse option
* doc/coreutils.texi (stat invocation): Add a paragraph documenting
stat's output format when the --terse option is specified, both in
normal and in --file-system mode.

Reported by Dan Jacobson <jidanni@jidanni.org>
in http://bugs.gnu.org/18624
2014-10-04 17:12:58 +02:00
Federico Simoncelli
af2a4ed225 dd: new status=progress level to print stats periodically
* src/dd.c: Report the transfer progress every second when the
new status=progress level is used.  Adjust the handling and
description of the status= option so that they're treated as
mutually exclusive levels, rather than flags with implicit precedence.
* doc/coreutils.texi (dd invocation): Document the new progress
status level.  Reference the new level in the description of SIGUSR1.
* tests/dd/stats.sh: Add new test for status=progress.
* tests/dd/misc.sh: Change so status=none only takes precedence
if it's the last level specified.
* NEWS: Mention the feature.
2014-09-30 16:08:43 +01:00
Pádraig Brady
27d2c7383f dd: use more robust SIGUSR1 handling
* src/dd.c (ifd_reopen): A new wrapper to ensure we
don't exit upon receiving a SIGUSR1 in a blocking open()
on a fifo for example.
(iftruncate): Likewise for ftruncate().
(iread): Process signals also after a short read.
(install_signal_handlers): Install SIGINFO/SIGUSR1 handler
even if set to SIG_IGN, as this is what the parent can easily
set from a shell script that can send SIGUSR1 without the
possiblity of inadvertently killing the dd process.
* doc/coreutils.texi (dd invocation): Improve the example to
show robust usage wrt signal races and short reads.
* tests/dd/stats.sh: A new test for various signal races.
* tests/local.mk: Reference the new test.
* NEWS: Mention the fix.
2014-09-30 16:08:43 +01:00
Pádraig Brady
1f2647b8af doc: ensure the correct texinfo nodes are referenced in --help
* src/system.h (emit_ancillary_info): For commands that don't have
a 1:1 mapping with the texinfo node names, provide a mapping to
the correct node.
* doc/coreutils.texi: Add some extra cross references noticed while
checking this.
Fixes http://bugs.debian.org/762092
2014-09-19 11:24:05 +01:00
Paul Eggert
72e470b9b5 doc: rename "coreutils invocation" to "Multi-call invocation"
This supports longstanding shell commands like
'info coreutils "touch invocation"'.
Problem reported by Vincent Lefevre via Bob Proulx in:
http://bugs.gnu.org/18428
* doc/coreutils.texi (Multi-call invocation):
Rename from "coreutils invocation".
2014-09-08 20:48:44 -07:00
Paul Eggert
943ca00bba doc: mention which commands are optional
* doc/coreutils.texi (coreutils invocation, df invocation)
(stty invocation, whoami invocation, nproc invocation)
(arch invocation, hostname invocation, hostid invocation)
(uptime invocation, chroot invocation, nice invocation)
(stdbuf invocation): Document that the command is installed
optionally.
2014-09-08 20:48:44 -07:00
Bernhard Voelker
9a1a715a00 doc: fix typos
* doc/coreutils.texi: Fix normal typos:
s/pseudorandom/pseudo-random/;
s/behaviour/behavior/;
s/linux-based/Linux-based/;
s/nonnegative/non-negative/.
Fix IEC's long name: s/Electronical/Electrotechnical/.
Wrap 'getopt' into the @code{} macro.
Fix a grammatical error (from myself): s/splitted/split/.
2014-09-07 01:35:52 +02:00
Paul Eggert
00441350f6 doc: spell "indeterminate" correctly
* doc/coreutils.texi (timeout invocation): Fix misspelling.
Reported by Yureruchihirosan via OKANO Takayoshi in:
http://bugs.gnu.org/18394
2014-09-03 09:52:55 -07:00
Fridolin Pokorny
837bf406df doc: clarify that duplicate NFS mounts are skipped by df
* doc/coreutils.texi (df invocation): Add a sentence that eliding
duplicate entries for the same file system is not limited to bind
mounts, but also happens for remote file systems like NFS.
2014-08-21 11:45:57 +02:00
Bernhard Voelker
0cf7b1d928 chroot: perform chdir("/") again unless new --skip-chdir is specified
Since commit v8.22-94-g99960ee, chroot(1) skips the chroot(2) syscall
for "/" arguments (and synonyms).  The problem is that it also skips
the following chdir("/") call in that case.  The latter breaks existing
scripts which expect "/" to be the working directory inside the chroot.
While the first part of the change - i.e., skipping chroot("/") - is
okay for consistency with systems where it might succeed for a non-root
user, the second part might be malicious, e.g.

  cd /home/user && chroot '/' bin/foo

In the "best" case, chroot(1) could not execute 'bin/foo' with ENOENT,
but in the worst case, chroot(1) would execute '/home/user/bin/foo' in
the case that exists - instead of '/bin/foo'.

Revert that second part of the patch, i.e., perform the chdir("/)
in the common case again - unless the new --skip-chdir option is
specified.  Restrict this new option to the case of "/" arguments.

* src/chroot.c (SKIP_CHDIR): Add enum.
(long_opts): Add entry for the new --skip-chdir option.
(usage): Add --skip-chdir option, and while at it, move the other
to options into alphabetical order.
(main): Accept the above new option, allowing it only in the case
when NEWROOT is the old "/".
Move down the chdir() call after the if-clause to ensure it is
run in any case - unless --skip-chdir is specified.
Add a 'newroot' variable for the new root directory as it is used
in a couple of places now.
* tests/misc/chroot-fail.sh: Invert the last tests which check the
working directory of the execvp()ed program when a "/"-like
argument was passed: now expect it to be "/" - unless --skip-chdir
is given.
* doc/coreutils.texi (chroot invocation): Document the new option.
Document that chroot(1) usually calls chdir("/") unless the new
--skip-chdir option is specified.  Sort options.
* NEWS (Changes in behavior): Mention the fix.
(New features): Mention the new option.
* init.cfg (nonroot_has_perm_): Add chroot's new --skip-chdir option.
* tests/cp/preserve-gid.sh (t1): Likewise.
* tests/cp/special-bits.sh: Likewise.
* tests/id/setgid.sh: Likewise.
* tests/misc/truncate-owned-by-other.sh: Likewise.
* tests/mv/sticky-to-xpart.sh: Likewise.
* tests/rm/fail-2eperm.sh: Likewise.
* tests/rm/no-give-up.sh: Likewise.
* tests/touch/now-owned-by-other.sh: Likewise.

Reported by Andreas Schwab in http://bugs.gnu.org/18062
2014-08-01 12:35:05 +02:00
Eric Blake
d8a19e0336 doc: clarify that floating point parses "inf"
* doc/coreutils.texi (Floating point): Document handling of "inf",
"infinity", "NaN", and so on.
2014-07-29 16:57:55 -06:00