doc: howto-man-page.txt: Use font macros instead of font escapes
Use font macros instead of font escapes (\f[BIPR]).
The escape '\c' ("connect to next input text")
is used to join the output of two macros without a space character.
This is similar to the '\' escape at the end of a line.
Font escapes make the text more difficult to read.
###
Changes based on:
Use a macro to change to the italic font,
instead of \fI [1], if possible.
The macros have the italic corrections,
but "\c" removes the "\/" part.
Or
add the italic corrections.
[1] man-pages(7) [Debian package "manpages"]
###
Change a HYPHEN-MINUS (code 0x55, 2D) to a minus (\-), if in front of a
1) name for an option
2) negative number to be printed.
###
Wrong distance between sentences or protect the indicator.
a) Separate the sentences and subordinate clauses;
each begins on a new line.
See man-pages(7) [package "manpages"] and "info groff".
Or
b) Adjust space between sentences (two spaces),
c) or protect the indicator by adding "\&" after it.
The "indicator" is an "end-of-sentence character" (.!?).
The amount of space between sentences in the output can then be
controlled with the ".ss" request.
Add a comma (,) after "e.g." and "i.e.", or use English words
(man-pages(7) [package "manpages"]).
Abbreviation points should be protected (usually with the
non-printing, zero width character '\&') from being interpreted as an
end of sentence, if they are not, and that independent of their current
place on the line.
This is important when typing, as one does not usually know in
advance when the editor jumps to a new line.
Pali Rohár [Sun, 15 Dec 2019 11:55:41 +0000 (12:55 +0100)]
libblkid: udf: Fix reporting UDF 2.60 revision for Mac OS X disks
Apple's newfs_udf, when creating UDF 2.60 disks, sets value 2.50 into
both Minimum UDF Read Revision and Minimum UDF Write Revision fields in
LVIDIU. And sets 2.60 value into UDF revision field in LVD descriptor.
So to correctly parse and set blkid ID_FS_VERSION field, use maximum value
from Minimum UDF Read Revision in LVIDIU, Minimum UDF Write Revision in
LVDIU and UDF revision in LVD descriptor.
This commit also adds a testing UDF 2.60 disk image with 4K sectors created
by Apple's newfs_udf to verify that ID_FS_VERSION is set correctly to 2.60.
agetty: return proper value if compiled without ISSUEDIR support
If agetty is compiled without support for ISSUEDIR, then it implements
a stub for `issuedir_read` that simply does nothing. In fact it does
too little, as it doesn't have a proper return statement even though the
function returns an integer.
Fix the issue by always returning `1` from `issuedir_read`. This
is the same error code that the real implementation of that function
returns in case it cannot open the directory and is thus a sensible
default to pretend that the directory doesn't exist.
Karel Zak [Tue, 10 Dec 2019 13:46:13 +0000 (14:46 +0100)]
Merge branch 'dmverity_options' of https://github.com/bluca/util-linux
* 'dmverity_options' of https://github.com/bluca/util-linux:
verity: add support for Forward Error Correction options
verity: ensure that hash_device and root_hash[_file] are passed together or not at all
verity: add new verity.roothashfile option
Luca Boccassi [Tue, 10 Dec 2019 11:18:09 +0000 (11:18 +0000)]
verity: add new verity.roothashfile option
Allow users to point mount to a file to read the roothash, in addition
to passing it inline.
Allows a volume managed by a systemd mount unit to be updated without
changing the mount unit content itself, for easier and more user friendly
servicing.
Karel Zak [Mon, 9 Dec 2019 11:20:22 +0000 (12:20 +0100)]
Merge branch 'kill-pidfd' of https://github.com/kerolasa/util-linux
* 'kill-pidfd' of https://github.com/kerolasa/util-linux:
kill: use pidfd system calls to implement --timeout option
build-sys: add missing NR underscore to UL_CHECK_SYSCALL()
Karel Zak [Mon, 9 Dec 2019 10:30:55 +0000 (11:30 +0100)]
lib/randutils: re-licensing back to BSD
The file is originally from libuuid, this library is under BSD
licence. Unfortunately, I have added LGPL header by accident to the
file (commit 0f23ee0c855d686b0c315af2c96b8835134cd9e3).
The file under LGPL was modified (in relevant way) by Sami,
Christopher and me. We all agree with re-licensing back to BSD.
Signed-off-by: Sami Kerola <kerolasa@iki.fi> Signed-off-by: Christopher James Halse Rogers <chris@cooperteam.net> Signed-off-by: Karel Zak <kzak@redhat.com>
Pierre Labastie [Fri, 6 Dec 2019 11:50:46 +0000 (12:50 +0100)]
docs: Fix adjtime documentation
The first line of the adjtime file is made of three numbers (see=20
hwclock.c):
- a drift factor as a decimal float
- the time of last adjust as a decimal integer
- a zero (for compatibility) as a decimal float.
but both man pages (hwclock.8 and adj_time.5) tell that the third
number is a decimal integer.
Of course this is harmless if somebody edits the adjtime file with
"0"=20 as the third number: it will be correctly read by hwclock
anyway. But if for some reason, a program reads the adjtime file and
expects an integer, it will fail, because hwclock writes O.OOOO0O as
the third=20 number.
Signed-off-by:: Pierre Labastie <pierre.labastie@neuf.fr> Signed-off-by: Karel Zak <kzak@redhat.com>
The source path will be used as a dm-verity object, and will be
opened using libcryptsetup APIs.
A new --with-cryptsetup build-time option is added, which adds a
dependency on libcryptsetup. To ease bootstrapping, given libcryptsetup
build-depends on util-linux for libuuid, if --with-cryptsetup=yes but
libcryptsetup is not installed only a warning will be printed at
configure time rather than an error. This way stage0/first stage/ring0
builds can use the same configure options but avoid installing
cryptsetup to get a working base set, and then rebuild util-linux in
the next step of the boostrapping process.
If verity options are selected but cannot be fullfilled due to lack of
dependencies, mounting a volume will fail even if using a loop device
would work as a fallback, to avoid silently skipping integrity checks.
Sami Kerola [Mon, 25 Nov 2019 20:31:20 +0000 (20:31 +0000)]
kill: use pidfd system calls to implement --timeout option
At times there is need in scripts to send multiple signals to a process.
Often these cases require some amount of waiting before follow-up signal
should be sent.
One common case is process termination, where first script tries to kill
process gracefully but if that does not work SIGKILL is sent. Functionality
like that is commonly done by periodically checking if signalled pid exist
or not, and if it does another signal is sent possibly to an unrelated
process that reused pid number. That means polling a pid is prone to a data
race. Also if the first signal immediately kills the process one polling
interval is lost in sleep.
Another example when multiple signal need to be sent is various daemon
process control situations, such as Upgrading Executable on the Fly (see
reference). This happens to be the case that inspired change author to make
sequential signaling a little bit easier.
Reference: http://nginx.org/en/docs/control.html#upgrade
Pull-request: https://github.com/karelzak/util-linux/pull/902 Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Karel Zak [Mon, 25 Nov 2019 12:55:18 +0000 (13:55 +0100)]
build-sys: fix out-of-tree build for hwclock
The file sys-utils/hwclock-parse-date.c is generated from .y and
stored in the build directory and "#include hwclock.h" is interpreted
relatively to the build tree rather than to source tree. We need
explicit -I compiler option to point to $srcdir for hwclock.
Karel Zak [Fri, 22 Nov 2019 11:34:45 +0000 (12:34 +0100)]
scriptlive: terminate session at end of the log
We need a proper way how to inform child (shell) that the game is
over. It seems the best is to send EOF to child rather than
immediately break PTY mainloop where we have poll(), because shell can
still produce data etc.
Karel Zak [Tue, 19 Nov 2019 13:58:20 +0000 (14:58 +0100)]
mount: no exit on EPERM, continue without suid
The current libmount assumes that mount(8) and umount(8) are suid
binaries. For this reason it implements internal rules which
restrict what is allowed for non-root users. Unfortunately, it's
out of reality for some use-cases where root permissions are no
required. Nice example are fuse filesystems.
So, the current situation is to call exit() always when mount, umount or
libmount are unsure with non-root user rights. This patch removes the
exit() call and replaces it with suid permissions drop, after that it
continues as usually. It means after suid-drop all depend on kernel
and no another security rule is used by libmount (simply because any
rule is no more necessary).
Example:
old version:
$ mount -t fuse.sshfs kzak@192.168.111.1:/home/kzak /home/kzak/mnt
mount: only root can use "--types" option
new version:
$ mount -t fuse.sshfs kzak@192.168.111.1:/home/kzak /home/kzak/mnt
kzak@192.168.111.1's password:
Sami Kerola [Sun, 17 Nov 2019 08:33:04 +0000 (08:33 +0000)]
nologin: silently ignore well known shell command-line options
nologin is typically used in /etc/passwd as a shell replacement. Hence it
is reasonable to ignore well known command-line options silently to avoid
unwanted ugly error messages.
Addresses: https://github.com/karelzak/util-linux/issues/895 Requested-by: Lennart Poettering <lennart@poettering.net> Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Evan Green [Tue, 12 Nov 2019 22:17:37 +0000 (14:17 -0800)]
libfdisk: Space before first partition may not be aligned
libfdisk chooses a grain of 1MB fairly arbitrarily, and this granule
may not be honored by other utilities. GPT disks formatted elsewhere
may have space before the first partition, AND a partition that exists
solely below 1MB. If this occurs, cfdisk ends up adding a free space
region where end < start, resulting in a 16 Exabyte free region.
That's too many exabytes.
This happens because the start gets rounded up to the granule size in
new_freespace() but the end is left alone. The logs show it best:
Karel Zak [Tue, 12 Nov 2019 10:15:38 +0000 (11:15 +0100)]
agetty: add --show-issue to review issue output
Let's make life easier for admins and allow to review issue file
output on the current terminal without all full agetty execution. Use
case is pretty simple:
# $EDITOR /etc/issue
# agetty --show-issue
Addresses: https://github.com/karelzak/util-linux/issues/828 Signed-off-by: Karel Zak <kzak@redhat.com>
Karel Zak [Thu, 7 Nov 2019 08:02:23 +0000 (09:02 +0100)]
build-sys: use parse-date() only for hwclock
The parse-date.y is used only for hwclock, let's keep it together.
Note that the file (originally from gnulib) has GPLv3 license, so it's
better to make it obvious that we use it really only for hwclock (also
GPL).
Michal Suchanek [Mon, 4 Nov 2019 20:23:15 +0000 (21:23 +0100)]
libblkid: open device in nonblock mode.
When autoclose is set (kernel default but many distributions reverse the
setting) opening a CD-rom device causes the tray to close.
The function of blkid is to report the current state of the device and
not to change it. Hence it should use O_NONBLOCK when opening the
device to avoid closing a CD-rom tray.
blkid is used liberally in scripts so it can potentially interfere with
the user operating the CD-rom hardware.
[kzak@redhat.com: add O_NONBLOCK also to:
- wipefs
- blkid_new_probe_from_filename()
- blkid_evaluate_tag()]
Signed-off-by: Michal Suchanek <msuchanek@suse.de> Signed-off-by: Karel Zak <kzak@redhat.com>
projects / thirdparty / util-linux.git / log
