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2011-01-30copy.c: add FIEMAP_FLAG_SYNC to fiemap ioctlJie Liu
* src/copy.c (fiemap_copy): Force kernel to sync the source file before mapping.
2011-01-30copy.c: ensure proper alignment of fiemap bufferPaul Eggert
* src/copy.c (fiemap_copy): Ensure that our fiemap buffer is large enough and well-aligned. Replace "0LL" with equivalent "0" as 3rd argument to lseek.
2011-01-30copy.c: adjust comments, tweak semanticsJim Meyering
* src/copy.c (fiemap_copy): Rename from fiemap_copy_ok. Add/improve comments. Remove local, "fail". (fiemap_copy): Do not require caller to set "normal_copy_required" before calling fiemap_copy. Report ioctl failure if it's the 2nd or subsequent call.
2011-01-30cp: copy sparse files efficiently using the FIEMAP ioctlJie Liu
* src/fiemap.h: Add fiemap.h for fiemap ioctl(2) support. Copied from linux's include/linux/fiemap.h, with minor formatting changes. * src/copy.c (copy_reg): Now, when `cp' is invoked with --sparse=[WHEN], we will try to do FIEMAP-copy if the underlying file system supports it, and fall back to a normal copy if it fails.
2011-01-13maint: trivial system header file cleanupsPádraig Brady
* src/system.h: Note where it should be included, and make ordering check portable to GLIBC > 2 * src/copy.c: Move <sys/ioctl.h> along with other system headers as is done elsewhere. * src/install.c: Move <sys/wait.h> along with other system headers as is done elsewhere. * src/ptx.c: Include <regex.h> rather than "regex.h" as is done elsewhere. Note <regex.h> is kept after "system.h" as per commit dba300a0.
2011-01-01maint: update all copyright year number rangesJim Meyering
Run "make update-copyright".
2010-12-28coreutils: keep lines within 80-column limitsPaul Eggert
* cfg.mk (LINE_LEN_MAX, FILTER_LONG_LINES): New macros. (sc_long_lines): New rule. * HACKING: Use shorter URLs to the same material. * doc/Makefile.am, doc/coreutils.texi, m4/boottime.m4: * man/help2man, man/stdbuf.x, src/Makefile.am, src/cat.c, src/copy.c: * src/cp.c, src/dd.c, src/df.c, src/du.c, src/groups.c, src/install.c: * src/ls.c, src/md5sum.c, src/mv.c, src/od.c, src/pinky.c, src/ptx.c: * src/readlink.c, src/remove.c, src/rmdir.c, src/setuidgid.c: * src/sort.c, src/tail.c, src/touch.c, tests/Coreutils.pm: * tests/cp/existing-perm-race, tests/cp/perm, tests/cp/preserve-gid: * tests/du/2g, tests/du/long-from-unreadable, tests/init.sh: * tests/install/basic-1, tests/ls/nameless-uid: * tests/ls/readdir-mountpoint-inode, tests/misc/chroot-credentials: * tests/misc/cut, tests/misc/date, tests/misc/join, tests/misc/md5sum: * tests/misc/sha1sum, tests/misc/sha224sum, tests/misc/sort: * tests/misc/sort-continue, tests/misc/sort-files0-from: * tests/misc/sort-rand, tests/misc/stdbuf, tests/misc/tr: * tests/misc/uniq, tests/mv/atomic, tests/mv/part-fail: * tests/mv/part-symlink, tests/mv/sticky-to-xpart, tests/pr/pr-tests: * tests/rm/fail-2eperm, tests/rm/interactive-always: Reformat to fit within 80 columns. * doc/Makefile.am (BAD_POSIX_PERL): New macro. * doc/coreutils.texi: Reword slightly, to make menus and index lines shorter. * src/md5sum.c: Redo --help output so that it fits within 79 columns, since that's a bit more portable and all the other --help strings fit in 79 columns.
2010-11-22cp: give a better diagnostic for nonexistent dest/Paul Eggert
This patch was written by Jim Meyering and myself. * src/copy.c (copy_reg): Turn EISDIR to ENOTDIR to improve the quality of diagnostics for commands like "cp a nosuch/". Reported by Марк Коренберг and Alan Curry in the thread starting at: http://lists.gnu.org/archive/html/bug-coreutils/2010-11/msg00178.html * THANKS: Update. * tests/mv/trailing-slash: Add a test.
2010-10-27cp: make --attributes-only override --reflink completelyPádraig Brady
* doc/coreutils.texi (cp invocation): Change the description slightly so as users might not immediately discount using this option. Mention that --reflink is overridden by the other linking options and --attributes-only, and give an example where this might be useful. * src/copy.c (copy_internal): Bypass the reflink if --attributes-only is specifed. * tests/cp/reflink-perm: Ensure both --reflink modes are overridden by --attributes-only. * NEWS: Mention the change in behavior. Reported by Jim Meyering.
2010-09-17maint: update to latest gnulibEric Blake
* gnulib: Update to latest. * src/copy.c (copy_reg): Use fdutimens instead of gl_futimens. * src/touch.c (touch): Adjust parameter order. * tests/init.sh: Resync from upstream.
2010-07-01cp: add an option to only copy the file attributesPádraig Brady
* src/copy.c (copy_attr): A new function which merges copy_attr_by_fd and copy_attr_by_name. Also display all errors when --attributes-only * src/copy.c (copy_reg): Skip copying the file contents if specified. Refactor the SELinux error handling code a little and display all SELinux errors when only copying attributes. * src/copy.h (struct cp_options): Add a data_copy_required boolean * src/cp.c (main): Default to copying data but don't if specified * src/install.c: Default to copying data * src/mv.c: Likewise tests/cp/reflink-perm: Add a test to check that --attributes-only does not copy data * tests/cp/acl: Likewise. Also refactor to remove redundant acl manipulation * doc/coreutils.texi (cp invocation): Describe the new option * NEWS: Mention the new feature
2010-05-31maint: make spacing around "=" consistent, even in IF_LINTJim Meyering
E.g., - size_t desired_width IF_LINT (= 0); + size_t desired_width IF_LINT ( = 0); Use this command: g grep -l IF_LINT | grep '\.[ch]$' \ | xargs perl -pi -e 's/(IF_LINT \()= /$1 = /'
2010-05-31maint: replace each "for (;;)" with "while (true)"Jim Meyering
Run this command: git ls-files | grep '\.[ch]$' \ | xargs perl -pi -e 's/for \(;;\)/while (true)/g' ...except for randint.c, which does not include stdbool.h. In that case, use "while (1)". * gl/lib/randint.c (randint_genmax): Use "while (1)" for infloops. * src/cat.c (simple_cat, cat): Use "while (true)" for infloops. * gl/lib/randread.c (readsource, readisaac): Likewise. * src/copy.c (copy_reg): Likewise. * src/csplit.c (record_line_starts, process_regexp): Likewise. * src/cut.c (set_fields): Likewise. * src/dd.c (iread, parse_symbols): Likewise. * src/df.c (find_mount_point, main): Likewise. * src/du.c (main): Likewise. * src/expand.c (expand): Likewise. * src/factor.c (factor_using_division, do_stdin): Likewise. * src/fmt.c (get_space): Likewise. * src/ls.c (decode_switches): Likewise. * src/od.c (main): Likewise. * src/pr.c (main, read_line): Likewise. * src/shred.c (dopass, genpattern): Likewise. * src/sort.c (initbuf, fillbuf, getmonth, keycompare): Likewise. * src/split.c (bytes_split, lines_split): Likewise. * src/tac.c (tac_seekable): Likewise. * src/test.c (and, or): Likewise. * src/tr.c (squeeze_filter, main): Likewise. * src/tsort.c (search_item): Likewise. * src/unexpand.c (unexpand): Likewise. * src/uniq.c (main): Likewise. * src/yes.c (main): Likewise.
2010-04-24maint: remove now-unnecessary #if HAVE_header_H tests.Jim Meyering
* .x-sc_prohibit_always_true_header_tests: New file. * Makefile.am (syntax_check_exceptions): Add it. * src/cat.c: Remove #if HAVE_SYS_IOCTL_H test. * src/copy.c: Likewise. * src/ls.c: Likewise. * src/stty.c: Likewise. * src/install.c: Remove #if HAVE_SYS_WAIT_H test. * src/kill.c: Likewise. * src/operand2sig.c: Likewise. * src/timeout.c: Likewise. * src/pathchk.c: Remove #if HAVE_WCHAR_H test. * src/stat.c: Remove #if HAVE_NETINET_IN_H test.
2010-04-16cp: preserve "capabilities" when also preserving file ownershipPádraig Brady
* src/copy.c (copy_reg): Copy xattrs _after_ setting file ownership so that capabilities are not cleared when setting ownership. * tests/cp/capability: A new root test. * tests/Makefile.am (root_tests): Reference the new test. * NEWS: Mention the fix.
2010-04-13cp: treat selinux warnings consistentlyPádraig Brady
* src/copy.c (copy_reg): Suppress SELinux ENOTSUP warnings consistently between the destination being present or not. Previously we did not suppress ENOTSUP messages when the destination was present. (copy_internal): Use the same ENOTSUP supression method as copy_reg() even though the issue was not seen in this case. * tests/cp/cp-a-selinux: Add a test case for the issue and group the other test cases in the file more coherently. * tests/cp/cp-mv-enotsup-xattr: Do the same check for xattr warnings, even though they did not have the issue.
2010-04-09maint: ftruncate is always available, even without gnulibJim Meyering
Now that even MinGW provides ftruncate, we know that all reasonable portability targets provide this function. Remove the workaround code. We nearly removed the gnulib module three years ago: http://thread.gmane.org/gmane.comp.lib.gnulib.bugs/9203 and it is now officially "obsolete". * bootstrap.conf (gnulib_modules): Remove ftruncate. * src/copy.c (copy_reg): Remove use of HAVE_FTRUNCATE and its no-longer-used workaround code. * src/truncate.c: Remove a comment about handling missing ftruncate.
2010-03-17maint: add a space before open-paren, where lackingJim Meyering
* src/copy.c (copy_reg): Likewise. * src/cut.c (main): Likewise. * src/dd.c (main): Likewise. * src/getlimits.c (print_int): Likewise. * src/join.c (join): Likewise. * src/pwd.c (logical_getcwd): Likewise. * src/sort.c (specify_nmerge, mergefps, avoid_trashing_input): Likewise. (merge): Likewise. * src/uptime.c (usage): Likewise.
2010-02-07copy.c: improve a commentJim Meyering
* src/copy.c (copy_reg): The comment about POSIXLY_CORRECT refers only to cp, not to any other application that uses copy.c.
2010-01-01maint: update all FSF copyright year lists to include 2010Jim Meyering
Use this command: git ls-files | grep -v COPYING \ | xargs env UPDATE_COPYRIGHT_USE_INTERVALS=1 \ build-aux/update-copyright
2009-10-10copy: allow symlink timestamp preservation on more systemsEric Blake
* src/copy.c (utimens_symlink): Simplify by using lutimens. * m4/jm-macros.m4 (coreutils_MACROS): Drop utimensat; gnulib does this for us. * tests/cp/preserve-slink-time: Recognize lutimes support.
2009-09-25cp, mv: use linkat to guarantee semanticsEric Blake
* src/copy.c (copy_internal): Use linkat, not link.
2009-09-23maint: Use logical rather than bitwise operators on boolsPádraig Brady
This is because bitwise operators are: - confusing and inconsistent in a boolean context - non short circuiting - brittle in C89 where bool can be an int (so > 1)
2009-09-21build: avoid compiler warnings on cygwin 1.5Eric Blake
* src/copy.c (utimens_symlink): Avoid unused variables. * src/su.c (getusershell): Rely on gnulib for prototype.
2009-09-15cp: fix a probably redundant chmod when setting xattrsOndřej Vašík
* src/copy.c (copy_reg): Fix initial value of access_changed variable. This was introduced by Pádraig Brady in commit cca83faf, 2009-09-14, "cp,mv: preserve extended attributes even for read-only files"
2009-09-14cp,mv: preserve extended attributes even for read-only filesOndřej Vašík
* src/copy.c (copy_reg): Temporarily set u+rw on the destination file to allow GNU/Linux to set xattrs. * tests/misc/xattr: Test that change. * NEWS (Bug fixes): Mention it. Reported by Ernest N. Mamikonyan.
2009-09-05maint: remove some tab indentation from copy.cPádraig Brady
* src/copy.c (copy_internal): Remove tabs erroneously added in commit 3346c0af.
2009-09-04mv, cp: tweak LINK_FOLLOWS_SYMLINKS logicEric Blake
* gnulib: Update to latest gnulib. * src/copy.c (copy_internal): Adjust comment in light of POSIX 2008, and deal with macro now being tri-state.
2009-09-03cp: don't leak resources for each xattr preservation failureOndřej Vašík
* src/copy.c (copy_reg): Don't return from the function after an unsuccessful and required preservation of extended attributes. This resulted in leaking the copy buffer and file descriptors. * NEWS (Bug fixes): Mention the fix. The bug was introduced in coreutils-7.1 via commit 0889381c, 2009-01-23, "cp/mv: add xattr support".
2009-08-29cp --reflink: preserve attributes on cloned files if askedPádraig Brady
* src/copy.c (copy_reg): When cloning only skip the data copying * tests/cp/reflink-perm: New test to check times and modes copied * tests/Makefile.am: Reference the new test * NEWS: Mention the fix
2009-08-29cp --reflink: add an "auto" parameter to fall back to a normal copyPádraig Brady
* doc/coreutils.texi (cp invocation): Document the new "auto" and "always" options to --reflink. * src/copy.c (copy_reg): Fall back to a standard copy when reflink() is not supported and --reflink=auto specified. * src/copy.h [struct cp_options] (reflink): Change type s/bool/enum/. * src/cp.c (usage): Describe the --reflink={always,auto} options and expand a little on what --reflink does. (main): parse the new parameters to --reflink and allow all --sparse options with --reflink=auto. * src/install.c (cp_option_init): Init the enum instead of bool. * src/mv.c (cp_option_init): Likewise. * tests/cp/reflink-auto: A new test for falling back to normal copy. * tests/Makefile.am: Reference the new test. * NEWS: Mention the new feature.
2009-08-28build: avoid unused variable warnings on cygwinEric Blake
* src/copy.c (clone_file, copy_attr_by_fd, copy_attr_by_name): Mark up unused variables. * src/remove.c (dirent_inode_sort_may_be_useful): Likewise.
2009-08-25global: convert indentation-TABs to spacesJim Meyering
Transformed via this shell code: t=$'\t' git ls-files \ | grep -vE '(^|/)((GNU)?[Mm]akefile|ChangeLog)|\.(am|mk)$' \ | grep -vE 'tests/pr/|help2man' \ | xargs grep -lE "^ *$t" \ | xargs perl -MText::Tabs -ni -le \ '$m=/^( *\t[ \t]*)(.*)/; print $m ? expand($1) . $2 : $_'
2009-08-24cp: ignore obscure failure to preserve symlink time stamps,Jim Meyering
...when run on a kernel older than what was implied by headers and libraries tested at configure time. * src/copy.c (utimens_symlink): Ignore failure when errno == ENOSYS. * NEWS (Bug fixes): Mention it. Reported by Todd Zullinger and Kamil Dudka. Details in this thread: http://thread.gmane.org/gmane.linux.redhat.fedora.devel/119834
2009-08-14cp,mv: fix issues with preserving timestamps of copied symlinksPádraig Brady
* src/copy.c (copy_internal): On systems without utimensat don't use utimens on a symlink, as that would dereference the symlink. * tests/cp/abuse: To work around possible attribute preservation failures breaking the test, use cp -dR rather than cp -a.
2009-08-07cp: accept the --reflink optionGiuseppe Scrivano
* NEWS: Mention it. * doc/coreutils.texi (cp invocation): Describe it. * src/copy.h (struct cp_options) [reflink]: New member. * src/copy.c (usage): Describe it. (copy_reg): If reflink is true try to clone the file. (main): Check for --reflink. (cp_option_init): Initialize the new member. * src/install.c (cp_option_init): Initialize the new member. * src/mv.c (cp_option_init): Likewise. * tests/cp/sparse: Add a new test case.
2009-08-04cp -pP (and e.g., -a): preserve time stamps on symlinks, tooJim Meyering
* src/copy.c (utimensat_if_possible): New function. (copy_internal): Remove variable, "preserve_metadata". Replace with "dest_is_symlink". That covers all cases but one: the one in which cp --link has created hard links to non-directories. In that case, there is no need to update attributes of the links. Use utimensat_if_possible, to preserve timestamps of symlinks. * NEWS (New features): Mention this. * tests/Makefile.am (TESTS): Add cp/preserve-slink-time. * tests/cp/preserve-slink-time: New file. * m4/jm-macros.m4 (coreutils_MACROS): Test for utimensat. Reported in http://bugzilla.redhat.com/230866
2009-07-29cp: support btrfs' copy-on-write file clone operationGiuseppe Scrivano
* src/copy.c [HAVE_SYS_IOCTL_H]: Include <sys/ioctl.h>. (BTRFS_IOCTL_MAGIC, BTRFS_IOC_CLONE): Define. (clone_file): New function. (copy_reg): Use the btrfs clone operation if possible.
2009-07-08copy.c: remove a duplicate expressionOndřej Vašík
* src/copy.c (copy_attr_error): remove a redundant expression added in commit e0cf592f, 2009-04-27, "factor out test for errno ...".
2009-04-27copy.c: factor out test for errno value indicating "unsupported"Jim Meyering
* src/copy.c (errno_unsupported): New function. (copy_attr_error, copy_internal): Use it.
2009-04-27cp -a: diagnose failure when preserving xattr/context requiredOndřej Vašík
* src/copy.c (copy_attr_by_fs): Always print diagnostics when preserving xattrs is required. (copy_attr_by_name): Likewise. (copy_reg): Always print diagnostics when preserving SELinux context is required. (copy_internal): Likewise. Also, do not ignore ENOTSUP and ENODATA errors when preserving SELinux context is required. * NEWS (Bug fixes): Mention it.
2009-04-27mv: ignore xattr-preservation failure when not supported by filesystemOndřej Vašík
*src/copy.c: Do not warn about xattr-preservation failure when xattrs are not supported and preservation of xattrs is not explicitly required. Reported by Eric Sandeen in http://bugzilla.redhat.com/496142
2009-04-22cp: work around linux kernel bug: short-read != EOF on /procJim Meyering
Remove the optimization that avoided up to 50% of cp's read syscalls. Do not assume that a short read on a regular file indicates EOF. When reading from a file in /proc on linux [at least 2.6.9 - 2.6.29] into a 4k-byte buffer or larger, a short read does not always indicate EOF. For example, "cp /proc/slabinfo /tmp" copies only 4068 of the total 7493 bytes. This optimization (25719a33154f0c62ea9881f0c79ae312dd4cec7a, Improve performance a bit by optimizing away; 2005-11-24) appears to have been worth less than a 2% speed-up (and usually much less), so the impact of removing it is negligible. * src/copy.c (copy_reg): Don't exit the loop early. * tests/cp/proc-short-read: New test, lightly based on a suggestion from Mike Frysinger, to exercise this fix. * tests/Makefile.am (TESTS): Add cp/proc-short-read. * NEWS (Improve robustness): Mention this change.
2009-03-11cp: make -a option preserve xattrs, but with reduced diagnosticsOndřej Vašík
* copy.c (copy_attr_by_fd): Reduce xattr diagnostics for 'cp -a'. (copy_attr_by_name): Likewise. * cp.c (main): Preserve xattrs with -a option, when possible. * doc/coreutils.texi: Document that xattrs are preserved with cp -a, with no added diagnostics. * NEWS: Mention the change. * tests/misc/xattr: Add tests for 'cp --preserve=all' and 'cp -a'.
2009-03-11cat,cp,mv,install,split: Set the minimum IO block size used to 32KiBPádraig Brady
This is following on from this change: [02c3dc9d 2008-03-06 cat: use larger buffer sizes ...] which increased the IO block size used by cat by 8 times, but also capped it at 32KiB. * NEWS: Mention the change in behavior. * src/system.h: Add a new io_blksize() function that returns the max of ST_BLKSIZE or 32KiB, as this was seen as a good value for a minimum block size to use to get good performance while minimizing system call overhead. * src/cat.c: Use it. * src/copy.c: ditto * src/split.c: ditto
2009-02-27cp: diagnose invalid "cp -rl dir dir" right away, once againJim Meyering
Running "mkdir dir; cp -rl dir dir" would create dir/dir/dir/... rather than diagnosing the "copy-into-self" failure. The easy fix would have been to revert this part of the change [3ece0355 2008-11-09 cp: use far less memory in some cases] that introduced the bug: - remember_copied (dst_name, dst_sb.st_ino, dst_sb.st_dev); + if (!x->hard_link) + remember_copied (dst_name, dst_sb.st_ino, dst_sb.st_dev); However, that would have induced the failure of the new cp/link-heap test, due to the added memory pressure of recording 10k dev/ino pairs. And besides, I liked that improvement and wanted to keep it. Now that it's obvious recording the just-created-directory dev/ino needn't depend on the setting of hard_link, I realized it is necessary to record the pair only for the first directory created for each source command-line argument. I made that change, then noticed the new test, cp -rl a d d, would pass when run once, yet output the into-self diagnostic twice. Also note the side effect: it creates d/a and d/d. However, running that same command a second time, now with the modified directory, would fail. That turned out to be due to the fact that although the first into-self failure was detected in copy_dir, that function would continue copying other entries regardless -- and that would make it fail (eventually) with the unwanted recursion. * src/copy.c (copy_internal): This function needed an indicator of whether, for a give command line argument, it had already created its first directory. If so, no more need to record dev/ino pairs. If this is the first, then do record its pair. Hence, the new parameter. (copy_dir, copy): Update callers. (copy_dir): Upon any into-self failure, break out of the loop. * tests/cp/into-self: Test for the above. Reported by Mikael Magnusson.
2009-02-18cp: -a now preserves SELinux context, with reduced diagnosticsOndřej Vašík
* copy.c (copy_reg): Reduce SELinux context diagnostics for 'cp -a'. (copy_internal): Likewise * copy.h (cp_options): Add boolean reduce_diagnostics. * cp.c (usage): Say that --archive (-a) behaves like -dR --preserve=all. (cp_option_init): Initialize added reduce_diagnostics. (main): Add reduce_diagnostics for the -a option, and preserve SELinux context, if possible. * mv.c (cp_options_init): Initialize new cp_options booleans. * install.c (cp_option_init): Likewise. * NEWS: Mention those behaviour changes. * doc/coreutils.texi: Document --preserve=context, document that diagnostics are not shown for failures of non-mandatory attributes (just SELinux at the moment). * tests/cp/cp-a-selinux: Check not only failures, but succesful use of preserving SELinux context in cp.
2009-02-05avoid spurious parentheses/arith-op-related warnings from newer gccJim Meyering
* src/copy.c (set_owner): Use && rather than &. * src/stty.c (main): Likewise. * src/wc.c (wc): Likewise.
2009-01-29cp/mv: add xattr supportKamil Dudka
This patch was originally written by Andreas Grünbacher, nowadays available at http://www.suse.de/~agruen/coreutils/5.91/coreutils-xattr.diff * bootstrap.conf: Add gnulib module verror. * po/POTFILES.in: Add lib/verror.c. * m4/xattr.m4: Check for libattr availability, new configure option --disable-xattr. * m4/prereq.m4: Require gl_FUNC_XATTR. * src/Makefile.am: Link cp, mv and ginstall with libattr. * src/copy.h: Add preserve_xattr and require_preserve_xattr to cp_options. * src/copy.c (copy_attr_error): New function to handle errors during xattr copying. (copy_attr_quote): New function to quote file name in error messages printed by libattr. (copy_attr_free): Empty function requested by libattr to free quoted string. (copy_attr_by_fd): New fd-oriented function to copy xattr. (copy_attr_by_name): New name-oriented function to copy xattr. (copy_reg, copy_internal): Call copy_extended_attributes function. * src/cp.c (usage): Mention new --preserve=xattr option. (decode_preserve_arg): Handle new --preserve=xattr option. * src/mv.c: Always attempt to preserve xattr. * src/install.c: Never attempt to preserve xattr. * tests/misc/xattr: New test for xattr support in cp, mv and install. * tests/Makefile.am: Add the new test to list. * doc/coreutils.texi: Mention xattr support, new --preserve=xattr option. * NEWS: Mention the change.
2008-11-20cp: use far less memory in some casesJim Meyering
cp --link was "remembering" many name,dev,inode triples unnecessarily. cp was doing the same, even without --link, for every directory in the source hierarchy, while it can do its job with entries merely for the command-line arguments. Prompted by a report from Patrick Shoenfeld. Details <http://thread.gmane.org/gmane.comp.gnu.coreutils.bugs/15081>. * src/copy.c (copy_internal): Refrain from remembering name,dev,inode for most files, when invoked via cp --link. Record an infloop-avoidance triple for each directory specified on the command line, not for each directory in the source tree. Don't record a dir-triple when x->hard_link is set. * NEWS (Buf fixes): Mention it. * tests/cp/link-heap: New file. Test for cp's lowered memory usage. * tests/Makefile.am (TESTS): Add link-heap.
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