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* NEWS: New option --atime-preserve=system, which uses O_NOATIME.

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* configure.ac: Prefer AC_CHECK_HEADERS_ONCE to AC_CHECK_HEADERS.
Check for stropts.h and sys/filio.h too, for _FIOSATIME.
* doc/tar.texi: Change "modification time" to "data modification
time", "change time" to "status change time", and "filesystem" to
"file system", so that we use terminology consistent with POSIX.
Use American spacing rather than French for sentence ends.
"non-dependable" -> "undependable".
(Option Summary, Attributes): Explain better the pitfalls of the
--atime-preserve option, and suggest read-only mounts,loopback
mounts, and noatime mounts for older systems.
* doc/value.texi (op-atime-preserve-system): Renamed from
op-atime-preserver-system to fix a misspelling.
* src/common.h (enum atime_preserve): Use lower case for enum values.
* src/compare.c: Don't include utimens.h; no longer needed.
(diff_file): Use set_file_atime rather than utimens; avoid closing
diff_handle until after this, so that we can set the file time stamp
via the file descriptor rather than via its name.
* src/create.c: Don't include utimens.h; no longer needed.
(dump_regular_finish): Remove.  All callers now do its work inline.
(dump_dir): New arg FD.  All callers changed.
Use fdsavedir rather than savedir.
(unknown_file_error): Arg is a const pointer now.
(dump_file0): 2nd arg is a const pointer now.
Treat directories more like files, with respect to --atime-preserve.
For example, also warn if a directory changes while we are dumping it.
Prefer file descriptors to file names when retrieving/setting file
attributes; this saves path-resolution time and allows us to avoid
changing mtime/ctime on Solaris when restoring atime as root.
Use O_DIRECTORY when opening directories, to avoid some race conditions.
Do not reset atime if mtime has changed.  Report an error if
we cannot reset atime.

First cut at adding support for --atime-preserve=system.
* doc/tar.texi (Option Summary): First cut at documenting it.
All other uses of --atime-preserve changed to --atime-preserve=replace.
* doc/value.texi (op-atime-preserve-replace, op-atime-preserver-system):
New.
(op-atime-preserve): Mention METHOD.
* src/common.h (atime_preserve): New enum.
(atime_preserve_option): Now of the enum type rather than bool.
All uses changed.
* src/compare.c (diff_file): Read with O_NOATIME if asked for.
* src/create.c (dump_file0): Read regular and CTG files with O_NOATIME
if asked for.
* src/tar.c (usage): Mention new usage.
(parse_opt): Parse new usage.
This commit is contained in:
Paul Eggert
2005-11-29 19:14:21 +00:00
parent 7b00db5675
commit aa976a5170
12 changed files with 509 additions and 293 deletions
Download Patch File Download Diff File Expand all files Collapse all files
ChangeLog
+85 -8
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@@ -1,3 +1,61 @@
2005-11-29 Paul Eggert <eggert@cs.ucla.edu>
* NEWS: New option --atime-preserve=system, which uses O_NOATIME.
* configure.ac: Prefer AC_CHECK_HEADERS_ONCE to AC_CHECK_HEADERS.
Check for stropts.h and sys/filio.h too, for _FIOSATIME.
* doc/tar.texi: Change "modification time" to "data modification
time", "change time" to "status change time", and "filesystem" to
"file system", so that we use terminology consistent with POSIX.
Use American spacing rather than French for sentence ends.
"non-dependable" -> "undependable".
(Option Summary, Attributes): Explain better the pitfalls of the
--atime-preserve option, and suggest read-only mounts,loopback
mounts, and noatime mounts for older systems.
* doc/value.texi (op-atime-preserve-system): Renamed from
op-atime-preserver-system to fix a misspelling.
* src/common.h (enum atime_preserve): Use lower case for enum values.
* src/compare.c: Don't include utimens.h; no longer needed.
(diff_file): Use set_file_atime rather than utimens; avoid closing
diff_handle until after this, so that we can set the file time stamp
via the file descriptor rather than via its name.
* src/create.c: Don't include utimens.h; no longer needed.
(dump_regular_finish): Remove. All callers now do its work inline.
(dump_dir): New arg FD. All callers changed.
Use fdsavedir rather than savedir.
(unknown_file_error): Arg is a const pointer now.
(dump_file0): 2nd arg is a const pointer now.
Treat directories more like files, with respect to --atime-preserve.
For example, also warn if a directory changes while we are dumping it.
Prefer file descriptors to file names when retrieving/setting file
attributes; this saves path-resolution time and allows us to avoid
changing mtime/ctime on Solaris when restoring atime as root.
Use O_DIRECTORY when opening directories, to avoid some race conditions.
Do not reset atime if mtime has changed. Report an error if
we cannot reset atime.
2005-11-29 Ian Turner <ian@zmanda.com>
First cut at adding support for --atime-preserve=system.
* doc/tar.texi (Option Summary): First cut at documenting it.
All other uses of --atime-preserve changed to --atime-preserve=replace.
* doc/value.texi (op-atime-preserve-replace, op-atime-preserver-system):
New.
(op-atime-preserve): Mention METHOD.
* src/common.h (atime_preserve): New enum.
(atime_preserve_option): Now of the enum type rather than bool.
All uses changed.
* src/compare.c (diff_file): Read with O_NOATIME if asked for.
* src/create.c (dump_file0): Read regular and CTG files with O_NOATIME
if asked for.
* src/tar.c (usage): Mention new usage.
(parse_opt): Parse new usage.
2005-11-29 Paul Eggert <eggert@cs.ucla.edu>
* THANKS: Convert back to UTF-8, sort (using LC_ALL=C on Debian
stable), and consistently use tabs rather than spaces.
2005-11-27 Sergey Poznyakoff <gray@gnu.org.ua>
* src/xheader.c: Remove parts of code prematurely introduced
@@ -23,7 +81,7 @@
tests/star/multi-fail.at: Close stdin so that if something fails
causing tar to ask for the next volume, it won't hang the
testsuite.
* src/buffer.c (flush_write,flush_read): Change data type.
(flush_archive): Compute actual buffer fill level before calling
low level function.
@@ -45,22 +103,22 @@
Correct buffer size calculation (allocated too much space).
(xheader_write): Increase global_header_count here ...
(xheader_write_global): ... instead of here
* tests/testsuite.at (AT_TAR_CHECK): Define TEST_TAR_FORMAT
* tests/multiv01.at: Update
* tests/multiv02.at: Update
* tests/multiv03.at: Update
* tests/sparsemvp.at: Update
* tests/star/multi-fail.at: Update
* scripts/tarcat: Handle archives in pax format. Improve handling
of traditional archives.
* doc/tar.texi (Tarcat): New node
2005-11-10 Sergey Poznyakoff <gray@gnu.org.ua>
Fix splitting of sparse files between the volumes.
* src/buffer.c (try_new_volume): Bugfix. Always check
continued_file_name. If it is absent, the volume is out
of sync.
@@ -86,13 +144,13 @@
on the extended header boundary) are still not solved, others
(splitting a sparse file between the volume) require additional
testing. Wait for the next commit.
(volume_label,continued_file_name,continued_file_size)
(continued_file_offset): New globals.
(save_name,save_totsize,save_sizeleft): Make static
(mv_begin,mv_end,mv_total_size,mv_size_left): New functions
(open_archive,flush_write,flush_read): Rewritten
* src/common.h (save_name,save_sizeleft,save_totsize): Remove
globals.
(volume_label,continued_file_name,continued_file_size): New
@@ -122,7 +180,19 @@
of related tests in groups.
* doc/tar.texi: Update
2005-11-07 Paul Eggert <eggert@cs.ucla.edu>
* src/xheader.c (struct xhdr_tab.coder): Last arg is void const *,
not void *, to avoid create.c warning from GCC "passing argument 3
of 'xheader_store' discards qualifiers from pointer target type".
(dummy_coder, atime_coder, gid_coder, gname_coder, linkpath_coder):
(ctime_coder, mtime_coder, path_coder, size_coder, uid_coder):
(uname_coder, sparse_size_coder, sparse_numblocks_coder):
(sparse_offset_coder, sparse_numbytes_coder, dumpdir_coder):
(xheader_store): Likewise.
* src/common.h (xheader_store): Likewise.
2005-11-07 Sergey Poznyakoff <gray@gnu.org.ua>
and Paul Eggert <eggert@cs.ucla.edu>
@@ -188,6 +258,13 @@
2005-11-06 Paul Eggert <eggert@cs.ucla.edu>
* NEWS: Minor language and white space fixes.
* tests/truncate.at: Create files whose time stamps must fall on
1-second boundaries. This prevents tests from failing on hosts
like Solaris 8 that have nanosecond-resolution file time stamps.
* tests/update.at: Likewise.
* src/xheader.c (strtoimax, strtoumax): Remove decls; now done
in system.h.