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directory before opening ".", to avoid trouble with file system
implementations that cache readdir results at opendir-time.
* src/remove.c (AD_pop_and_chdir): Add a file descriptor parameter.
Don't update **DIRP. Don't call fdopendir here.
(remove_dir): Call fdopendir here instead.
Report and patch from Mikulas Patocka:
<http://lists.gnu.org/archive/html/bug-coreutils/2006-12/msg00170.html>
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* src/remove.c (remove_entry): Handle EACCES for a non-directory, too.
Karl Berry reported that a cross-partition "mv /etc/issue ~"
failed with the um,... suboptimal diagnostic,
"mv: cannot remove `/etc/issue': Not a directory".
* tests/rm/Makefile.am (TESTS): Add fail-eacces.
* tests/rm/fail-eacces: New file.
* NEWS: Mention that both mv and rm are affected.
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Update callers.
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while trying to retain the readability of C99 as much as possible.
* src/remove.c (close_preserve_errno): Remove.
(fd_to_subdirp): Rewrite to avoid the need for decl after statement.
Signed-off-by: Paul Eggert <eggert@cs.ucla.edu>
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Use an else clause in place of a "continue" statement.
Signed-off-by: Paul Eggert <eggert@cs.ucla.edu>
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after statement.
Signed-off-by: Paul Eggert <eggert@cs.ucla.edu>
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a pointer argument. All uses changed.
Signed-off-by: Paul Eggert <eggert@cs.ucla.edu>
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Update the caller in remove_dir.
Signed-off-by: Paul Eggert <eggert@cs.ucla.edu>
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Replace each of two uses with literal AT_FDCWD.
Signed-off-by: Paul Eggert <eggert@cs.ucla.edu>
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Suggested by Steve McIntyre in <http://bugs.debian.org/392925>.
* src/remove.h (struct rm_options) [one_file_system]: New member.
* src/rm.c (rm_option_init): Initialize it.
(usage): Document the option.
* src/mv.c (rm_option_init): Likewise.
* src/remove.c (remove_dir): With --one-file-system and --recursive,
for each directory command line argument, do not affect a file system
different from that of the starting directory. And give a diagnostic.
* src/rm.c (ONE_FILE_SYSTEM): New enum.
(main): Handle new option.
* tests/rm/one-file-system: Test the above.
* tests/rm/Makefile.am (TESTS): Add one-file-system.
* tests/Makefile.am (check-root): Add the rm/one-file-system
test to the list.
(EXTRA_DIST): Add other-fs-tmpdir.
* tests/mv/setup: Removed. Renamed to...
* tests/other-fs-tmpdir: ...this new file.
* tests/mv/Makefile.am (EXTRA_DIST): Remove setup.
* tests/mv/acl: Reflect renaming: use ../other-fs-tmpdir.
* tests/mv/backup-is-src: Likewise.
* tests/mv/hard-link-1: Likewise.
* tests/mv/leak-fd: Likewise.
* tests/mv/mv-special-1: Likewise.
* tests/mv/part-fail: Likewise.
* tests/mv/part-hardlink: Likewise.
* tests/mv/part-rename: Likewise.
* tests/mv/part-symlink: Likewise.
* tests/mv/partition-perm: Likewise.
* tests/mv/to-symlink: Likewise.
* tests/mv/into-self-2: Likewise.
[doc/ChangeLog]
* coreutils.texi (rm invocation): Describe --one-file-system.
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HAVE_WORKING_O_NOATIME and HAVE_WORKING_O_NOFOLLOW, too.
(usage): Output info about noatime and nofollow only if
they are known to work.
* src/remove.c (AD_push): Inspect HAVE_WORKING_O_NOFOLLOW rather
than O_NOFOLLOW, when testing whether it's possible to avoid a
race condition reliably.
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Paul Eggert pointed out that the specified file may exist,
in spite of such an errno value.
* tests/rm/Makefile.am (TESTS): Remove ignore-name-too-long.
* tests/rm/ignore-name-too-long: Remove file.
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of a missing file under some very unusual conditions (with errno
being any of ENOENT, ENOTDIR, ENAMETOOLONG).
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* src/remove.c (ignorable_missing): New function.
Use it everywhere, rather than open-coding the test.
Andreas Schwab reported the ENOTDIR problem.
(ignorable_missing): Similarly, don't fail for ENAMETOOLONG.
* NEWS: Mention the bug fix.
* tests/rm/ignorable: New file. Test for the ENOTDIR case.
* tests/rm/ignore-name-too-long: New file. Test for ENAMETOOLONG.
* tests/rm/Makefile.am (TESTS): Add the new file names.
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Since any system may be affected by the Darwin readdir bug,
perform the extra rewinddir unconditionally. The performance
impact of rewinding a directory is negligible.
* src/remove.c (NEED_REWIND): Define to use
CONSECUTIVE_READDIR_UNLINK_THRESHOLD unconditionally.
[m4/ChangeLog]
* readdir.m4: Remove file once again.
* jm-macros.m4: Remove reference to gl_FUNC_READDIR.
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and NFS, whereby rm would not remove all files in a directory.
* src/remove.c (CONSECUTIVE_READDIR_UNLINK_THRESHOLD): Reduce to 10.
(NEED_REWIND): New macro, so that we incur the cost of the work-around
rewinddir only on afflicted systems.
* NEWS: Clarify and correct.
* tests/rm/readdir-bug: New file. Test for the above fix.
* tests/rm/Makefile.am (TESTS): Add it.
Prompted by testing and analysis from Bruno Haible:
http://lists.gnu.org/archive/html/bug-coreutils/2006-09/msg00326.html
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it from removing a directory containing 188 or more entries.
* src/remove.c (CONSECUTIVE_READDIR_UNLINK_THRESHOLD): Decrease by
20, go work around the buggy readdir on Darwin 8.6.1 with NFS.
Reported by Matthew Woehlke.
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it's own line.
(rm_1): Move declaration of "st" and new cache_stat_init call
"down" to nearer where they're used.
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(cache_fstatat, cache_stat_init): New functions.
(cache_statted, cache_stat_ok): New functions.
(write_protected_non_symlink): Remove struct stat ** buf_p arg,
which is no longer needed with the new functions. All callers
changed.
(prompt, is_dir_lstat, remove_entry, remove_dir):
New struct stat * arg. All callers changed.
(write_protected_non_symlink, prompt, is_dir_lstat, remove_entry):
(remove_cwd_entries, remove_dir, rm_1):
Use and maintain the file status cache.
(prompt, remove_entry): Omit the first "directory" in the diagnostic
"Cannot remove directory `foo': is a directory". This causes "rm"
to pass a test case that it would otherwise fail now that it
"knows" more about its argument. I think the diagnostic is better
without the first "directory" anyway.
(prompt): Remove the no-longer-needed IS_DIR arg; all callers changed.
(rm_1): Reject attempts to remove /, ./, or ../.
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(dot_or_dotdot): ...new static inline function.
* src/remove.c (rm_1): Reflect this renaming.
* src/ls.c (basename_is_dot_or_dotdot): Likewise.
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(AD_mark_helper): Free malloc'd filename if hash_insert says
that string is already in the hash table.
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being recorded.
* src/remove.c (remove_cwd_entries): Don't call cycle_check here.
(AD_push): Call it from here instead.
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* src/remove.c (AD_stack_clear): New function.
(rm_1): Use it.
(AD_pop_and_chdir): Free *prev_dir just before longjmp.
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fd_to_subdirp failure, not just when errno == EACCES.
* src/remove.c (remove_dir): Use unlinkat-with-AT_REMOVEDIR, not
rmdir, here, even though rmdir may happen to be adequate.
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* src/remove.c (remove_cwd_entries): If we can't open a directory,
and the failure is not being ignored, try to remove the directory
with rmdir (aka unlinkat-with-AT_REMOVEDIR), in case it's empty.
Problem report and test case from Paul Eggert in
<http://article.gmane.org/gmane.comp.gnu.core-utils.bugs/7425>.
* tests/rm/empty-inacc: New test, for the above.
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CYCLE_CHECK_REFLECT_CHDIR_UP, rather than open-coding it.
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could cause the removal of that directory to fail with an erroneous
diagnostic about a directory cycle. Reported by Vineet Chadha.
(AD_pop_and_chdir): If the directory we're about to
leave (and try to rmdir) is the one whose dev_ino is being used to
detect a cycle, reset cycle_check_state.dev_ino to that of the parent.
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(close_preserve_errno): New function.
(fd_to_subdirp): Don't print a diagnostic in this function.
Do it from the callers instead, unless rmdir succeeds.
(remove_cwd_entries, remove_dir): Adjust callers.
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First off, the attribute should have been `volatile' (not static)
to avoid longjmp-related risk of clobber. Secondly, now there is
no longer any risk of a local variable being clobbered, so there's
no need for any attribute at all.
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(AD_pop_and_chdir): Use gotos to avoid some duplication.
(AD_push): Rewrite an assertion so that the entire computation
goes away when assertions are turned off.
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| O_NOFOLLOW too, for consistency with other dir-openers.
Use POSIX-preferred O_NONBLOCK rather than O_NDELAY.
(is_empty_dir): Likewise.
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(OPEN_NO_FOLLOW_SYMLINK): Remove definition. Use O_NOFOLLOW in
place of all uses, since it is guaranteed (system.h) to be defined.
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(OPENAT_CWD_RESTORE__ALLOW_FAILURE): Likewise.
(fd_to_subdirp): Remove openat_cwd_restore_allow_failure arg; its
value is now signified by whether cwd_errno is null.
(fd_to_subdirp, remove_dir, rm_1); Change cwd failure indicator from
pointer-to-bool to pointer-to-errno-value. All callers changed.
(rm_1): Don't bother setting a local cwd failure flag and then
ORing it into the caller's. Just set the caller's.
(rm): Use cwd failure errno value to print a slightly-better
diagnostic.
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that provide openat (Solaris), and on systems like Linux+procfs
where our openat emulation code is reentrant. This also fixes a
few low-probability leaks and eliminates some code that could,
in very unusual circumstances, cause rm() (via a callee) to exit.
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(AD_mark_current_as_unremovable): Likewise, but for a local.
(rm_1): Likewise.
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(without -r) fails to remove a directory on a non-Linux system.
This change affects only newer Solaris systems (with priv_*
functions like priv_allocset). Reported by Keith Thompson.
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when attempting to remove `/' with --preserve-root.
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assignment out of an if-expression.
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Remove inaccurate-but-harmless `const' attributes.
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