coreutils/src/tail.c, branch v8.7

tail: support rechecking currently missing remote dirs

2010-10-25T14:41:53Z

src/tail.c (main): As an optimization, don't bother checking for stdin or remote files, when ---disable-inotify is specified. To improve the fix in commit 61b77891, set the disable_inotify flag when we fall back to polling, so that we recheck remote files. NEWS: Mention the fix

tail: fix checking of currently unavailable directories

2010-10-12T10:41:17Z

* src/tail.c (tail_forever_inotify): Handle the case where tail --follow=name with inotify, is not able to add a watch on a specified directory. This may happen due to inotify resource limits or if the directory is currently missing or inaccessible. In all these cases, revert to polling which will try to reopen the file later. Note inotify returns ENOSPC when it runs out of resources, and instead we report a particular error message, lest users think one of their file systems is full. (main): Document another caveat with using inotify, where we currently don't recheck directories recreated after the initial watch is setup. * tests/tail-2/F-vs-rename: Fix the endless loop triggered by the above issue. * tests/tail-2/inotify-hash-abuse: Likewise. * tests/tail-2/wait: Don't fail in the resource exhaustion case. * tests/tail-2/F-vs-missing: A new test for this failure mode which was until now just triggered on older buggy linux kernels which returned ENOSPC constantly from inotify_add_watch(). * NEWS: Mention the fix.

maint: adjust INT_BUFSIZE_BOUND usage for maintainability

2010-06-08T11:16:26Z

* src/tail.c (xlseek): Give INT_BUFSIZE_BOUND a variable name, not a type name. * src/ls.c (gobble_file, format_user_or_group_width): Likewise. * src/head.c (elide_tail_bytes_pipe): Likewise. (elide_tail_lines_seekable, main): Likewise. [This change is not complete -- there are doubtless other uses that can be updated in the same way.]

tail: include sys/vfs.h (if possible) when sys/statfs.h is absent

2010-04-04T07:15:07Z

* src/tail.c [HAVE_INOTIFY && !HAVE_SYS_STATFS_H]: Include .

maint: update all FSF copyright year lists to include 2010

2010-01-01T13:06:47Z

Use this command: git ls-files | grep -v COPYING \ | xargs env UPDATE_COPYRIGHT_USE_INTERVALS=1 \ build-aux/update-copyright

doc: update tail's documentation to allow for new -F semantics

2009-12-31T08:42:52Z

* src/tail.c (usage): Reword tail -F description, so that it no longer mentions details specific to the non-inotify implementation. Also, join diagnostic strings (while staying under the 509-byte limit) to ease formatting of translations. The latter was prompted by a report from Stéphane Raimbault. * doc/coreutils.texi (tail invocation): Update description here, too.

tail -F: don't stop following the target of a rename

2009-12-30T10:22:55Z

This fixes a bug whereby tail -F would fail to track changes to a file that was a target of a rename, and when the source of the rename was another tailed file. * src/tail.c (tail_forever_inotify): Ensure the wd is not already present in the hash table before trying to add it. When a new watch descriptor is added to the `wd_to_name' hash table, check that it is not already present. If it is present then remove the previous element.

tail: remove `fdspec' from the hash table before changing its key

2009-12-29T16:01:01Z

* src/tail.c (tail_forever_inotify): Avoid modifying fdspec->wd while it is in the wd_to_name hash table. Once it is removed, it can be added using the new `wd' as key for the hash table. This fixes the abort-inducing bug reported by Rob Wortman in http://thread.gmane.org/gmane.comp.gnu.coreutils.bugs/19372

tail: rename an internal variable

2009-12-29T13:26:05Z

* src/tail.c (tail_forever_inotify): s/wd_table/wd_to_name/

tail: avoid read-beyond-end-of-buffer error

2009-12-29T13:24:01Z

* src/tail.c (tail_forever_inotify): Do not use f[i] in a context where i may be larger than the largest valid index. In the final "if" clause in which we'd remove an inotify watch, we might have used f[n_files]. Use fspec instead, since it is guaranteed to be defined.