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4026 Commits

Author SHA1 Message Date
Jim Meyering
3a696dee72 tests: misc/tty-eof: increase timeout to avoid unwarranted failure
* tests/misc/tty-eof: Increase timeout from 1s to 10s, to avoid
unwarranted failure under heavy load.
* tests/Makefile.am (TESTS): Move misc/tty-eof "up" to nearer the
beginning of the list (from near the middle) so that it is started
earlier in parallel test runs.  Otherwise, it would frequently be
among the last two tests to complete.
2012-05-10 17:09:42 +02:00
Paul Eggert
9d308df132 maint: handle file sizes more reliably
Problem reported by Samuel Thibault in <http://bugs.gnu.org/11424>.
* NEWS: Document this.
* src/dd.c (skip): Handle skipping past EOF on shared or typed
memory objects the same way as with regular files.
(dd_copy): It's OK to truncate shared memory objects.
* src/du.c (duinfo_add): Check for overflow.
(print_only_size): Report overflow.
(process_file): Ignore negative file sizes in the --apparent-size case.
* src/od.c (skip): Fix comment about st_size.
* src/split.c (main):
* src/truncate.c (do_ftruncate, main):
On files where st_size is not portable, fall back on using lseek
with SEEK_END to determine the size.  Although strictly speaking
POSIX says the behavior is implementation-defined, in practice
if lseek returns a nonnegative value it's a reasonable one to
use for the file size.
* src/system.h (usable_st_size): Symlinks have reliable st_size too.
* tests/misc/truncate-dir-fail: Don't assume that getting the size
of a dir is not allowed, as it's now allowed on many platforms,
e.g., GNU/Linux.
2012-05-10 11:02:42 +02:00
Jim Meyering
30071b2f5c build: update gnulib submodule to latest; also bootstrap and init.sh
* bootstrap: Update from gnulib.
* tests/init.sh: Likewise.
2012-05-08 15:47:46 +02:00
Kevin Lyda
aa078afcf9 maint: fix common spelling errors
These were identified using: https://github.com/lyda/misspell-check
executed like: git ls-files | misspellings -f -

* src/cat.c: Correct a spelling error.
* src/comm.c: Likewise.
* src/expr.c: Likewise.
* src/pr.c: Likewise.
* src/tac.c: Likewise.
* src/test.c: Likewise.
* src/ChangeLog-2005: Likewise.
* src/ChangeLog-2007: Likewise.
* src/NEWS: Likewise.
* src/doc/coreutils.texi: Likewise.
* src/lib/ChangeLog-2007: Likewise.
* src/man/help2man: Likewise.
* src/old/fileutils/ChangeLog-1997: Likewise.
* src/old/fileutils/NEWS: Likewise.
* src/old/sh-utils/ChangeLog.0: Likewise.
* src/old/textutils/ChangeLog: Likewise.
* src/tests/misc/comm: Likewise.
* src/tests/misc/uniq: Likewise.
* src/tests/mv/dir2dir: Likewise.
* src/cfg.mk (old_NEWS_hash): update with `make update-NEWS-hash`
2012-05-08 02:18:39 +01:00
Jim Meyering
fedebc59a0 tests: avoid LD_PRELOAD lookup error for dlsym
* tests/cp/nfs-removal-race: Link with -ldl.
2012-05-07 22:01:20 +02:00
Jim Meyering
ee9e43460f cp: handle a race condition more sensibly
* src/copy.c (copy_reg): In a narrow race (stat sees dest, yet
open-without-O_CREAT fails with ENOENT), retry the open with O_CREAT.
* tests/cp/nfs-removal-race: New file.
* tests/Makefile.am (TESTS): Add it.
* NEWS (Bug fixes): Mention it.
Reported by Philipp Thomas and Neil F. Brown in
http://bugs.gnu.org/11100
2012-05-07 13:39:48 +02:00
Jim Meyering
032a549481 id,groups: with no user name, print only real and/or effective IDs,
... i.e., don't use the getpw* functions.

Before this change, running groups or id with no user name argument
would include a group name or ID from /etc/passwd.  Thus, under unusual
circumstances (default group is changed, but has not taken effect for a
given session), those programs could print a name or ID that is neither
real nor effective.

To demonstrate, run this:

    echo 'for i in 1 2; do id -G; sleep 1.5; done' \
      |su -s /bin/sh ftp - &
    sleep 1; perl -pi -e 's/^(ftp\d+):(\d+)/$1:9876/' /etc/passwd

Those id -G commands printed the following:

    50
    50 9876

With this change, they print this:

    50
    50

Similarly, running those programs set-GID could make them
print one ID too many.

* src/group-list.c (print_group_list): When username is NULL, pass
egid, not getpwuid(ruid)->pw_gid), to xgetgroups, per the API
requirements of xgetgroups callee, mgetgroups.
When not using the password database, don't call getpwuid.
* NEWS (Bug fixes): Mention it.
* tests/misc/id-setgid: New file.
* tests/Makefile.am (TESTS): Add it.
(root_tests): It's a root-only test, so add it here, too.
Originally reported by Brynnen Owen as http://bugs.gnu.org/7320.
Raised again by Marc Mengel in http://bugzilla.redhat.com/816708.
2012-04-27 19:54:03 +02:00
Bernhard Voelker
fdf0a44967 tests: factor out expensive "pairs" code of misc/stty
* tests/Makefile.am (TESTS): Add misc/stty-pairs.
* tests/init.cfg (stty_reversible_init_): New function.
(stty_reversible_query_): New function.
* tests/misc/stty: Factor out expensive "pairs" code into new test.
Use new stty_reversible_* functions instead of evaluating static
REV_* variables.
* tests/misc/stty-pairs: Add new test.  Code added from misc/stty.
Mark this as an expensive test.  Skip 'parenb' and 'cread' options,
as these tests are known to fail.  Like in misc/stty, also use
the new stty_reversible_* functions.
2012-04-19 19:31:48 +02:00
Bernhard Voelker
26996738e4 tests: add iutf8 option to misc/stty
* tests/misc/stty: Add iutf8 to the list of REV_* options.
That option has been implemented in commit v5.2.1-193-g733e79e.
2012-04-19 19:27:16 +02:00
Bruce Korb
0092d5d88b fmt: accept new --goal=WIDTH (-g) option
Accept -g for BSD/Plan9 compatibility.
* NEWS (New features): Mention it.
* tests/fmt/goal-option: New test.
* tests/fmt/long-line: Rename from tests/fmt-long-line.
* tests/fmt/base: Rename from tests/misc/fmt.
* doc/coreutils.texi: Document it.
* src/fmt.c (main): Accept the new option
(check_for_goals): new function to implement the operands
Based on BSD's and Plan-9's fmt programs.
2012-04-12 22:46:51 +02:00
Pádraig Brady
3d53e7fe1c cp: change --attributes-only to not truncate existing files
* src/copy.c (copy_reg): Don't truncate an existing file,
to support copying attributes between existing files.
The original use case only considered creating new files,
and it would be a very unusual use case to be relying
on the truncating behavior.
* doc/coreutils.texi (cp invocation): Mention the non
truncating behavior.
* tests/cp/attr-existing: A new test to ensure O_TRUNC skipped.
* tests/Makefile.am: Reference the new test.
* NEWS: Mention the change in behavior.
2012-04-12 18:35:17 +01:00
Andreas Schwab
7e0ef7c035 tests: avoid unnecessary subshells in misc/stty
* tests/misc/stty: Don't waste a subshell to perform this:
eval rev=\$REV_$opt.  Fix rev1,rev2 assignments similarly.
2012-04-04 16:09:49 +02:00
Jim Meyering
89779e8497 tests: correct reversed args to "compare"
* tests/misc/sort-discrim: Correct reversed args to "compare".
This nit was masked by a bug in maint.mk that effectively disabled
many of the syntax-check rules.
2012-04-04 14:30:18 +02:00
Jim Meyering
33230a19ca tests: remove nearly all remaining backticks
* tests/rm/isatty: Remove now-unneeded "# `" line.
* tests/misc/ls-time: Likewise.
* tests/misc/date-sec: Remove stray "`" in comment.
* tests/du/long-sloop: Likewise.
* tests/mv/part-symlink: Replace multi-line `...` by $(...).
* tests/mv/sticky-to-xpart: Likewise.
* tests/rm/fail-2eperm: Likewise.
* tests/ls/nameless-uid: Likewise.
* tests/cp/perm: Likewise.
* tests/cp/preserve-gid: Likewise.
* tests/cp/same-file: Likewise.
2012-04-04 12:22:24 +02:00
Jim Meyering
b1e9cb9cd2 tests: use perl's qx!...! rather than ...
* tests/misc/expr: As above.
* tests/misc/ls-misc: Likewise.
* tests/misc/pwd-long: Likewise.
* tests/misc/uniq: Likewise.
2012-04-04 12:22:24 +02:00
Jim Meyering
e43d30eab3 tests: convert nearly all ... expressions to $(...)
Exempt init.sh because it runs before we're assured to have a
shell that groks $(...).  Exempt *.mk because "$" would have to
be doubled, and besides, any `...` expression in a .mk file is
almost certainly evaluated before init.sh is run.  Finally, also
exempt the perl-based tests, because perl's `...` cannot be
converted to $(...).  Do that by running this command:

git grep -l '`.*`' tests \
  | grep -Ev 'init\.sh|\.mk$' | xargs grep -Lw perl \
  | xargs perl -pi -e 's/`(.*?)`/\$($1)/g'

One minor fix-up change was required after that, due to how
quoting differs:
diff --git a/tests/chmod/equals b/tests/chmod/equals
-    expected_perms=$(eval 'echo \$expected_'$dest)
+    expected_perms=$(eval 'echo $expected_'$dest)

Another was to make these required quoting adjustments:
diff --git a/tests/misc/stty b/tests/misc/stty
...
-  rev=$(eval echo "\\\$REV_$opt")
+  rev=$(eval echo "\$REV_$opt")
...
-      rev1=$(eval echo "\\\$REV_$opt1")
-      rev2=$(eval echo "\\\$REV_$opt2")
+      rev1=$(eval echo "\$REV_$opt1")
+      rev2=$(eval echo "\$REV_$opt2")

Also, transform two files that were needlessly excluded above:
(both use perl, but are mostly bourne shell)

  perl -pi -e 's/`(.*?)`/\$($1)/g' \
    tests/du/long-from-unreadable tests/init.cfg
2012-04-04 12:20:56 +02:00
Jim Meyering
64ecea53d9 tests: convert one ... expression manually
* tests/ls/stat-vs-dirent: Manually convert `(...)` to $(...),
to avoid automatically producing an invalid result.
2012-04-03 22:17:28 +02:00
Jim Meyering
64cf1033cc tests: fix quoting bug in misc/nohup
* tests/misc/nohup: Fix invalid quoting.
2012-04-03 22:17:28 +02:00
Jim Meyering
0f35329876 tests: avoid spurious misc/expr failure on AIX 6.1
* tests/misc/expr: Avoid spurious failure on AIX 6.1 due to
differing regexp diagnostic.  Reported by Michael Felt.
2012-04-03 08:24:20 +02:00
Jim Meyering
1a1c46afe2 tests: remove temporary skip for sort-stale-thread-mem failure
* tests/misc/sort-stale-thread-mem: Invoke framework_failure_, now,
hoping that valgrind is fixed (or we add exclusions) before the
next release.
2012-03-26 20:56:44 +02:00
Jim Meyering
cd65eb9798 tests: work around F17-valgrind sort-stale-thread-mem failure
* tests/misc/sort-stale-thread-mem: Skip upon known failure.
2012-03-26 13:52:58 +02:00
Jim Meyering
488172c499 tests: skip ls/stat-free-color on XFS, rather than always failing
* tests/init.cfg (require_dirent_d_type_): Manually skip when
"." is an xfs file system.
2012-03-23 18:39:11 +01:00
Jim Meyering
4b101ccd17 tests: skip part of dd/sparse on some file systems
* tests/dd/sparse: The last two parts of this test would fail due to
the underlying file system at least on Solaris 10 with NFS.  That file
system would report that a 3MiB file was occupying <= 1KiB of space
for nearly 50 seconds after creation.
Improved-by: Bernhard Voelker
2012-03-23 12:47:52 +01:00
Harald Hoyer
15b8318e93 ln: add the --relative option
With the "--relative --symbolic" options, ln computes the relative
symbolic link for the user.

So, ln works just as cp, but creates relative symbolic links instead
of copying the file.

I miss this feature since the beginning of using ln.

$ tree ./
/
`-- usr
    |-- bin
    `-- lib
        `-- foo
            `-- foo

4 directories, 1 file

$ ln -s -v --relative usr/lib/foo/foo usr/bin/foo
‘usr/bin/foo’ -> ‘../lib/foo/foo’

$ tree ./
/
`-- usr
    |-- bin
    |   `-- foo -> ../lib/foo/foo
    `-- lib
        `-- foo
            `-- foo

4 directories, 2 files

$ ln -s -v --relative usr/bin/foo usr/lib/foo/link-to-foo
‘usr/lib/foo/link-to-foo’ -> ‘foo’

$ tree ./
/
`-- usr
    |-- bin
    |   `-- foo -> ../lib/foo/foo
    `-- lib
        `-- foo
            |-- link-to-foo -> foo
            `-- foo

4 directories, 3 files

* src/Makefile.am: Reference the relpath module.
* src/ln.c (usage): Mention the new option.
(do_link): Call the relative conversion if specified.
(convert_abs_rel): Perform the relative conversion
using the relpath module.
* tests/ln/relative: Add a new test.
* tests/Makefile.am: Reference the new test.
* doc/coreutils.texi: Document the new feature.
* NEWS: Mention the new feature.
2012-03-22 20:51:20 +00:00
Jim Meyering
56673dbe8a tests: avoid spurious misc/factor failure on OpenBSD 5.1
* tests/misc/factor: Map OpenBSD 5.1's "unknown option" to our
expected "invalid option".  Reported by Bruno Haible.
2012-03-20 17:34:28 +01:00
Pádraig Brady
d42f3a4d41 tests: avoid spurious dd/sparse failure
* tests/dd/sparse: Allow for greater variation in sparse-block counts.
Reported by Nelson H. F. Beebe and Bruno Haible.
2012-03-20 10:30:39 +00:00
Pádraig Brady
eb7ef0148a tests: fix sort-discrim to work without GMP
* tests/misc/sort-discrim: The expr limit is intmax_t without GMP.
2012-03-17 09:39:13 +00:00
Pádraig Brady
ae7b1c383f tests: avoid an ls-time false positive on Solaris 10
* tests/misc/ls-time: Force a ctime update as updating
the atime doesn't update ctime on tmpfs on Solaris 10.
2012-03-16 14:41:51 +00:00
Eric Blake
9f5aa48501 realpath: let --relative-to default to --relative-base
Most of the time, if someone wants to filter which paths are
relative while leaving all others absolute, they also want to
to the filtering based on the same --relative-to directory.
Make this easier to specify.

* src/realpath.c (main): Convert error to default.
* doc/coreutils.texi (realpath invocation): Document this.
* tests/misc/realpath: Adjust test to match.
* NEWS: Document it.
2012-03-15 12:24:05 -06:00
Eric Blake
61167bae9f tests: cover more realpath scenarios
'realpath --relative-base --relative-to' is identical to
--relative-base=--relative-to, so the test wasn't covering what
it claimed.  Expose recent fixes for handling of // on systems
where // is distinct, and for --relative-base=/.  Add test that
exposes our design decision that --relative-base that is not a
prefix of --relative-to is a no-op (if we later change behavior,
we will also have to change that part of the test).

* tests/misc/realpath: Fix typo. Add some tests.
2012-03-15 10:28:42 -06:00
Eric Blake
a84286ce7a test: expose recent gnulib canonicalize bug
https://lists.gnu.org/archive/html/bug-gnulib/2012-02/msg00038.html
detailed a couple of bugs in gnulib's canonicalize that were visible
through coreutils' readlink, but only on systems where // is distinct
from /.  This particular test assumes the POSIX fix which requires
canonicalization of a symlink containing just slashes to behave as
if slashes separating the symlink from the rest of the name are
elided (see http://austingroupbugs.net/view.php?id=541), as that is
the only useful (and current) behavior on Cygwin.  That is,

ln -s / root
ls root/dev

must list the contents of /dev, not //dev.

* tests/misc/readlink-root: New test.
* tests/Makefile.am (TESTS): Run it.
2012-03-14 09:23:40 -06:00
Paul Eggert
0dd13c463d tests: new discriminator-based test for sort -n and -h
* tests/Makefile.am (TESTS): Add misc/sort-discrim.
* tests/misc/sort-discrim: New file, which tests a discriminator-based
implementation of 'sort'.  Coreutils doesn't use this implementation
yet, but the test is useful anyway.

Co-authored-by: Drew Kutilek <dkutilek@ucla.edu>
Co-authored-by: James Wendt <jwendt@cs.ucla.edu>
2012-03-13 23:23:07 -07:00
Jérémy Compostella
57c929da8b dirname: support more than one argument
* src/dirname.c (main): Handle new -z option and manage more than one
  argument.
* doc/coreutils.texi (dirname invocation): Mention it.
* NEWS (New features): Mention it.
* tests/misc/dirname: Add a two arguments test.
2012-03-10 19:53:06 +00:00
Jérémy Compostella
7480e2db29 split: support an arbitrary number of split files by default
* src/split.c (next_file_name): If `suffix_auto' is true and the first
suffix character is 'z', generate a new file file name adding `z' to
the prefix and increasing the suffix length by one.
(set_suffix_length): Disable auto suffix width in various cases.
* tests/split/suffix-auto-length: Test it.
* doc/coreutils.texi (split invocation): Mention it.
* NEWS (Improvements): Likewise.
2012-03-10 19:36:13 +00:00
Paul Eggert
8931cdbfda chmod: add notations +40, 00440, etc.
* NEWS: Document this.
* doc/perm.texi (Operator Numeric Modes): New section.
(Numeric Modes, Directory Setuid and Setgid): Document new behavior.
* src/chmod.c (usage): Document new behavior.
(main): Support new options -0, -1, etc.
* tests/chmod/setgid: Test these new features.
2012-03-08 19:01:26 -08:00
Jim Meyering
f7f398a1d9 du: fix -x: don't ignore non-directory arguments
Surprise!  "du -x non-DIR" would print nothing.
Note that the problem arises only when processing a non-directory
specified on the command line.  Not surprisingly, "du -x" still
works as expected for any directory argument.

When performing its same-file-system check, du may skip an entry
only if it is at fts_level 1 or greater.  Command-line arguments
are at fts_level == 0 (FTS_ROOTLEVEL).

* src/du.c (process_file): Don't use the top-level FTS->fts_dev
when testing for --one-file-system (-x).  It happens to be valid
for directories, but it is always 0 for a non-directory.
* tests/du/one-file-system: Add tests for this.
* NEWS (Bug fixes): Mention it.
Reported by Daniel Stavrovski in http://bugs.gnu.org/10967.
Introduced by commit v8.14-95-gcfe1040.
2012-03-08 13:04:09 +01:00
Jérémy Compostella
a3eb71a98f basename: support more than one argument
* src/basename.c (perform_basename): New function refactored from
main() that performs the basename work on a STRING, optionally
removes a trailing SUFFIX and outputs the result.
(main): Handle new options.
* doc/coreutils.texi (basename invocation): Mention new options.
* test/misc/basename: Add new options test cases.
* NEWS (New features): Mention it.
2012-03-07 12:59:00 +00:00
Pádraig Brady
8195165839 tests: work around a block alignment issue in dd/sparse
Prompted by the continuous integration build failure at:
http://hydra.nixos.org/build/2188210 (which uses XFS).

* tests/dd/sparse (alloc_equal): Add a block allocation
comparison function that accounts for variations due
to alignment.
2012-03-02 10:57:56 +00:00
Bernhard Voelker
409a7cc7ea tests: compile and link shared object with $CC to make LD_PRELOAD work
* tests/ls/getxattr-speedup: Compile and link in one step with $CC.
If the shared object file is created by ld (binutils), then the
destructor print_call_count() may not run (seen on OpenSuSE 12.1).
See http://lists.opensuse.org/opensuse/2012-02/msg01342.html
Thanks to Cristian Rodríguez.
2012-02-29 10:01:50 +01:00
Roman Rybalko
4e776faa84 dd: add support for the conv=sparse option
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.
2012-02-29 00:17:56 +00:00
Jim Meyering
72addfcac9 tests: fix help-version on cygwin, where $EXEEXT is nonempty
* tests/misc/help-version: Remove the $EXEEXT suffix from each
program name before comparing with a literal.
2012-02-26 09:48:48 +01:00
Bernhard Voelker
f19747455e tests: remove unnecessary use of -lc
* tests/ls/getxattr-speedup: Remove unneeded use of -lc.
2012-02-26 09:37:31 +01:00
Jérémy Compostella
69fed0dfec split: add the --additional-suffix option
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
2012-02-20 13:30:26 +00:00
Jérémy Compostella
933989eca6 tests: ls/getxattr-speedup: include <sys/types.h> for older headers
Modern <stdio.h> provides ssize_t, but the one from Debian's
libc6-dev 2.11.2-10 apparently does not.
* tests/ls/getxattr-speedup: Also include <sys/types.h>.
2012-02-19 18:43:53 +01:00
Jim Meyering
b29db67676 tests: test for ls speed-up
* tests/ls/getxattr-speedup: New test.
* tests/Makefile.am (TESTS): Add it.
Improved-by: Bernhard Voelker
2012-02-18 13:55:06 +01:00
Jérémy Compostella
d55d3dd588 split: support optional start value for --numeric-suffixes
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.
2012-02-18 02:09:32 +00:00
Pádraig Brady
4bb5dbcfef dd: fix issues in the count_bytes and seek_bytes flags change
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.
2012-02-13 21:58:21 +00:00
Jérémy Compostella
140eca15c4 dd: add count_bytes, skip_bytes and seek_bytes flags
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.
2012-02-12 17:34:28 +00:00
Jim Meyering
b01355a1dc mv: "mv A B" would sometimes succeed, yet A would remain, ...
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
2012-02-12 12:21:53 +01:00
Jim Meyering
d1b0155d80 mv: allow moving symlink onto same-inode dest with >= 2 hard links
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.
2012-01-30 20:43:07 +01:00