coreutils/src, branch v8.1

true, false: perform initialization only when argc == 2

2009-11-16T08:30:50Z

* src/true.c (main): There is no reason to examine argv[0], call atexit, etc., in the usual case in which we're about to exit. This has the side effect of making it so that these programs no longer segfault when subjected to execve abuse. Before this change, these commands would make "true" segfault: printf '%s\n' '#include ' 'int main(int c, char**v)' \ '{ execve (v[1], 0, 0); }' > k.c && gcc k.c && ./a.out $PWD/true Now it succeeds. Reported by Tetsuo Handa and Bart Van Assche via Ondřej Vašík in http://bugzilla.redhat.com/537684.

tail -F can fail to track a file after it's been rotated

2009-11-16T08:30:43Z

Tailing forever and by-name (--follow=name, -F), tail would sometimes fail to follow a file that had been removed via rename. If you can't apply this patch and have tail 7.6 or newer, you can work around the bug via the undocumented --disable-inotify option. * src/tail.c (tail_forever_inotify): When tailing by name (-F), do not un-watch a file upon receipt of the IN_MOVE_SELF event. Reported by Arjan Opmeer in http://bugs.debian.org/548439. * NEWS (Bug fixes): Mention it. Also see http://marc.info/?l=coreutils-bug&m=125829031916515 * tests/Makefile.am (TESTS): Add tail-2/inotify-rotate. * tests/tail-2/inotify-rotate: New test.

build: update gnulib, for getgroups improvements

2009-11-13T14:50:20Z

A replacement getgroups is now guaranteed to exist, but it may fail with ENOSYS. mgetgroups is moved to gnulib, and now takes gid_t instead of GETGROUPS_T (but setgroups still needs GETGROUPS_T). * gnulib: Update to latest. * gl/modules/mgetgroups: Delete, moved to gnulib. * gl/m4/mgetgroups.m4: Likewise. * gl/lib/mgetgroups.h: Likewise. * gl/lib/mgetgroups.c: Likewise. * src/group-list.c (print_group_list): Adjust callers. * src/id.c (print_full_info): Likewise.

ls: fix capability coloring

2009-11-09T08:16:20Z

Capability checking was incorrectly done on just the base name rather than on the whole path. Consequently there could be both false positives and negatives when coloring files with capabilities. Also capability checking was not done at all in certain cases for non executable files. Note passing absolute rather than relative names to cap_get_file() reduces the has_capability() overhead from around 33% to 30%. I.E. ls --color is now around 3% faster. * src/ls.c (struct fileinfo): Add a has_capability member. (print_color_indicator): Refactor to pass just a fileinfo pointer and a flag to say if we're dealing with a symlink target. (print_name_with_quoting): Likewise. (gobble_file): Set has_capability in the fileinfo struct. Also do a capability check even if executable coloring is disabled. Ditto for SETUID and SETUID coloring. Comment on how expensive has_capability() is. (print_long_format): Adjust to refactored print_name_with_quoting. (quote_name): Likewise. (print_file_name_and_frills): Likewise. * tests/ls/capability: Test the various false positive and negatives. * THANKS: Add reporter (Ivan Labath). * NEWS: Mention the fix.

build: consistently use freopen-safer

2009-11-07T17:10:28Z

cat, head, ptx, shuf, tac, tail, tee, tr, and uniq used freopen on stdout, and were potentially vulnerable. dircolors, du, and tsort only used it on stdin, which is unaffected by freopen_safer, but this covers all uses for consistency. * cfg.mk (sc_require_stdio_safer): New rule. * gl/modules/xfreopen (Depends-on): Add freopen-safer. * gl/lib/xfreopen.c (includes): Use stdio--.h. * src/ptx.c (includes): Likewise. * src/shuf.c (includes): Likewise. * src/uniq.c (includes): Likewise. * src/dircolors.c (includes): Likewise. * src/du.c (includes): Likewise. * src/tsort.c (includes): Likewise.

mktemp: fix bug with -q and closed stdout

2009-11-07T17:10:25Z

If stdin or stdout is closed, then freopen(,stderr) can violate the premise that STDERR_FILENO==fileno(stderr), which in turn breaks mktemp -q. * bootstrap.conf (gnulib_modules): Add freopen-safer. * src/mktemp.c (includes): Use stdio--.h. * tests/misc/close-stdout: Enhance test to catch bug.

maint: make du's cycle-detection code consistent

2009-11-07T07:43:05Z

* src/du.c (process_file): Revert the du.c-changing part of commit 8ba5d1a7. Use cycle_warning_required instead.

chcon, chgrp, chmod and chown now diagnose a directory cycle

2009-11-07T07:43:00Z

* lib/xfts.c (cycle_warning_required): New function. * lib/xfts.h: Declare it. * src/chown-core.c (change_file_owner): Diagnose a cycle. * src/chmod.c (process_file): Likewise. * src/chcon.c (process_file): Likewise. * NEWS (Bug fixes): Mention this.

nproc: A new program to count the available processors

2009-11-06T16:54:12Z

* AUTHORS: Add my name. * NEWS: Mention it. * README: Likewise. * bootstrap.conf (gnulib_modules): Add nproc. * doc/coreutils.texi (nproc invocation): Add nproc info. * man/Makefile.am (nproc.1): Add dependency. * man/nproc.x: New template. * man/.gitignore: Ignore generated man page. * po/POTFILES.in: Add src/nproc.c. * src/.gitignore: Exclude nproc. * src/Makefile.am (EXTRA_PROGRAMS): Add nproc. * src/nproc.c: New file. * tests/Makefile.am (TESTS): Add misc/nproc-{avail,positive}. * tests/misc/nproc-avail: New file. * tests/misc/nproc-positive: New file.

mktemp: use more robust means to avoid double-close of stdout

2009-11-05T20:12:35Z

Reverts earlier patch - fflush() can succeed but fclose() fail for some cases of write failures, and we want to catch those. * src/mktemp.c (stdout_closed): New variable. (maybe_close_stdout): New function, borrowed from dd.c. (main): Track whether stdout has been closed.