Source: freebsd/sys/libkern/crc32.c
This code is an unmodified fragment from the source. Will fixup
comments / naming in next commit
Signed-off-by: Karel Zak <kzak@redhat.com>
* Start the ISO format flags at bit 0 instead of bit 1.
* Remove unnecessary _8601 from ISO format flag names to
avoid line wrapping and to ease readability.
* ISO timestamps have date-time-timzone in common, so move
the TIMEZONE flag to bit 2 causing all timestamp masks
to have the first three bits set and the last four bits
as timestamp 'options'.
* Change the 'SPACE' flag to a 'T' flag, because it makes
the code and comments more concise.
* Add common ISO timestamp masks.
* Implement the ISO timestamp masks in all applicable code
using the strxxx_iso() functions.
Signed-off-by: J William Piggott <elseifthen@gmx.com>
This new function returns the GMT offset relative to its
argument. It is used in this patch to fix two bugs:
1) On platforms that the tm struct excludes tm_gmtoff,
hwclock assumes a one hour DST offset. This can cause
an incorrect kernel timezone setting. For example:
Master branch tested with tm_gmtoff illustrates the correct offset:
$ TZ="Australia/Lord_Howe" hwclock --hctosys --test | grep settimeofday
Calling settimeofday(1507494204.192398, -660)
Master branch tested without tm_gmtoff has an incorrect offset:
$ TZ="Australia/Lord_Howe" hwclock --hctosys --test | grep settimeofday
Calling settimeofday(1507494249.193852, -690)
Patched tested without tm_gmtoff has the correct offset:
$ TZ="Australia/Lord_Howe" hwclock --hctosys --test | grep settimeofday
Calling settimeofday(1507494260.194208, -660)
2) ISO 8601 'extended' format requires all time elements
to use a colon (:).
Current invalid ISO 8601:
$ hwclock
2017-10-08 16:25:17.895462-0400
Patched:
$ hwclock
2017-10-08 16:25:34.141895-04:00
Also required by this change:
login-utils/last.c: increase ISO out_len and in_len by one to
accommodate the addition of the timezone colon.
Signed-off-by: J William Piggott <elseifthen@gmx.com>
Although iso-8601 specifies years as 4 digits, it allows
them to be wider.
The current POSIX year width is limited by 'int tm_year'
at 10 digits plus a negative sign.
That, and the possibility of nanosecond time makes the
widest POSIX iso-8601 time 41 characters. Plus the \0
string terminator yields a buffer size of 42.
Before truncated output:
/sbin/hwclock --utc --noadjfile --predict --date '-2147483765 years'
-2147481748-09-25 20:29:45.0000
Patched:
./hwclock --utc --noadjfile --predict --date '-2147483765 years'
-2147481748-09-25 20:17:21.000000-0456
./hwclock --utc --noadjfile --predict --date '-2147483766 years'
hwclock: invalid date '-2147483766 years'
Comparable to coreutils 'date' command:
date -Ins --date '-2147483765 years'
-2147481748-09-25T19:49:31,578899297-0456
date -Ins --date '-2147483766 years'
date: invalid date '-2147483766 years'
The 'date' output illustrates the full 41 character POSIX iso-8601
Signed-off-by: J William Piggott <elseifthen@gmx.com>
The /etc/issue file has been originally designed to inform users
about the system (version, name, etc.).
In last years is growing number of additional tools (containers,
maintenance tools and interfaces, ...) and many admins and downstream
maintainer want to add some tool specific hints to the issue file, but
it mess to share one file between more packages and/or scripts. The
solution is /etc/issue.d directory.
The directory is extension to the standard system /etc/issue. The
/etc/issue file has to exist, otherwise the directory will be ignored.
It means "rm /etc/issue" (or --onissue) is still the way how keep our
system silent independently on 3rd-party installed files in the
/etc/issue.d directory.
The content of the files in the directory are printed after content of
the /etc/issue. The files are printed in version-sort order and .issue
file extension is required (00-foo.issue 01-bar.issue ...).
The change is backwardly compatible.
Signed-off-by: Karel Zak <kzak@redhat.com>
Kernel since 4.14 supports setting of logical block size[1]. It allows to
create loop devices that report logical block size different from 512.
Add support for this feature to losetup.
References:
[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/block/loop.c?id=89e4fdecb51cf5535867026274bc97de9480ade5
[kzak@redhat.com: - fix loopcxt_get_blocksize()
- remove lo_blocksize from loop_info64]
Signed-off-by: Stanislav Brabec <sbrabec@suse.cz>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Omar Sandoval <osandov@fb.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Karel Zak <kzak@redhat.com>
Adding V3 and V5 UUIDs per RFC-4122.
[kzak@redhat.com: - fix symbols file]
Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
Use the usual facilities, add translation strings, move global variables at
the beginning of the file, make usage() look as expected, add standard
command-line option parsing.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
The util-linux code was previously aligned to use @localstatedir@ and
the util-linux build system was set to override the default to use /run.
Current GNU Coding Standards introduced the @runstatedir@ variable
for this purpose. Lets use that instead.
The GNU default for @runstatedir@ is ${localstatedir}/run so util-linux
still override the default to be /run to preserve the status quo from
before. The only difference is that you'll now pass --runstatedir to
override the location on the command line instead of --localstatedir.
(FWIW, Debhelper in compat 11 will automatically start passing
--runstatedir=/run to all autotools configured builds. It already
passes --localstatedir=/var (to avoid it ending up with the GNU default
/usr/local/var) which breaks the util-linux build system code that
tries to default it to /run. This change will thus allow util-linux
and debhelper to work better together and avoid the need for a
package-specific override.)
Relevant historic commits:
* commit 07a16b9d1e
"build-sys: change --localstatedir to /run"
* commit 80c51185d5
"uuidd: use run configured state directory"
* commit 01c5b78794
"agetty: use configured run state directory"
[kzak@redhat.com: - add $runstatedir fallback for autoconf < 2.70
- check for unmodified $localstatedir]
CC: Sami Kerola <kerolasa@iki.fi>
Signed-off-by: Andreas Henriksson <andreas@fatal.se>
Signed-off-by: Karel Zak <kzak@redhat.com>
For some reason kernel commit e980f62353c697cbf0c4325e43df6e44399aeb64
add extra warning when the ioctl is used for DM devices. It seems we
can avoid this ioctl when the device has dm/uuid.
Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=1469532
Signed-off-by: Karel Zak <kzak@redhat.com>
changed in include/c.h and applied via sed:
sed -i 's/fprintf.*\(USAGE_MAN_TAIL.*\)/printf(\1/' $(git ls-files -- "*.c")
sed -i 's/print_usage_help_options\(.*\);/printf(USAGE_HELP_OPTIONS\1);/' $(git ls-files -- "*.c")
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
Simply avoiding strdup(). Error handling improved.
This was the Clang Analyzer warning:
Memory Error, Use-after-free
sys-utils/lsmem.c:259:3: warning: Use of memory after it is freed
err(EXIT_FAILURE, _("Failed to open %s"), path);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
We assume that users will have a kernel >= 2.6.0 and removel
references to earlier kernels. There are still a few ones
left.
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
We change
-h, --help display this help and exit
-V, --version output version information and exit
to
-h, --help display this help
-V, --version print version
Some thoughts about this:
* use "display" for --help because it matches better if we
would add pager support (like git --help)
* "print" for --version to be different
* "this" for --help is important to make clear that running
--help would not give you any better information than the
one you see already
* remove "information and exit" because it's bloat for the
short-help, everybody knows what it does if it exists
In the manpages we should use the old, longer but more correct
descriptions, inclusive a reminder if --help/--version are only
working when used as the only option. Note the term "version
information" indicates that we don't only print a single version
number.
CC: J William Piggott <elseifthen@gmx.com>
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
Consolidate --help and --version descriptions. We are
now able to align them to the other options.
We changed include/c.h. The rest of this patch was
generated by sed, plus manually setting the right
alignment numbers. We do not change anything but
white spaces in the --help output.
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
This reverts the include/c.h part of cc7cb070.
As discussed on ml. Our current strings are imported from
coreutils and not too bad. Also the old strings are still
hardcoded at many places.
So let's revert the change, then consolidate these strings
really everywhere and then think again whether and how we
should change them.
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
* '170622' of github.com:jwpi/util-linux:
Docs: move option naming to howto-contribute.txt
Docs: update howto-usage-function.txt
Docs: add a comment for constants to boilerplate.c
include/c.h: add USAGE_COMMANDS and USAGE_COLUMNS
Nowadays all our regular commands have --help options.
test_uuidd does not use translations anyways.
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
As discussed on the mailing list. We fix all places
where the non-working define STRTOXX_EXIT_CODE was used.
Regarding tunelp, also see 7e3c80a7.
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
* use /dev/rtc0 (/dev/rtc was for the 'old' driver)
* remove hwclock Award workaround and alpha cmos paths
* relocate _PATH_BTMP from hwclock to login-utils
* add a comment for _PATH_BTMP and fix other login-utils comments
* add a comment for proc/cpuinfo
* remove empty shutdown.c comment from 4d43977f
Review changes
* remove 'used in' comments
* white space fixes
Reviewed-by: Karel Zak <kzak@redhat.com>
Signed-off-by: J William Piggott <elseifthen@gmx.com>
Make a functions heading, similar to the existing options heading.
* include/c.h: define USAGE_FUNCTIONS
* Documentation/boilerplate.c: add USAGE_FUNCTIONS
* sys-utils/hwclock.c add functions header to usage()
Reviewed-by: Karel Zak <kzak@redhat.com>
Signed-off-by: J William Piggott <elseifthen@gmx.com>
We are using now the formerly unused function sun_pt_checksum(). This
cleanup was motivated by clang compiler warning, see below. Also nice
that we are now always using uint16_t instead of short.
Warning was:
../libfdisk/src/sun.c:177:35: warning: taking address of packed member 'csum' of class or structure 'sun_disklabel' may result in an unaligned pointer value
[-Waddress-of-packed-member]
while(ush < (unsigned short *)(&sunlabel->csum))
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
* '170415' of github.com:jwpi/util-linux:
optutils.h: don't print non-graph characters
hwclock: improve audit control
hwclock: --set and --predict segmentation fault
hwclock: make epoch functions alpha only
hwclock: improve default function handling
The current libfdisk code uses gettext() to translate strings. It
means it follows the default text domain (as set by textdomain(3)
usually in the main program). This is useless for public shared
library.
We have call private bindtextdomain() and use dgettext() with private
domain name to be independent on the main program. For this purpose
include/nls.h supports UL_TEXTDOMAIN_EXPLICIT to use dgettext().
Note that libfdisk will continue to use util-linux.po, rather than
keep the texts in the separate file.
The nls.h has to be included only from fdiskP.h to be sure that
nls.h works as expected for the library.
Signed-off-by: Karel Zak <kzak@redhat.com>
There is no eloquent way to exclude/include arch dependent arguments
from the ul_excl_t array. So when an arch dependent argument is left
undefined err_exclusive_options() was printing out-of-bounds values.
This commit cause them to be skipped instead.
err_exclusive_options() shouldn't be printing out-of-bounds values
in any case.
Also change the error massage from 'options' to 'arguments' as some
programs, like hwclock, distinguish between options and functions.
Signed-off-by: J William Piggott <elseifthen@gmx.com>
The current agetty uses TIOCSTI ioctl to return already read chars
from login name back to the terminal (without read() before
tcsetattr() we will lost data already written by user). The ioctl
based solution is fragile due to race -- we can return chars when
terminal already contains another new chars. The result is reordered
chars in login name.
The solution is to use extra buffer for already read data.
Reported-by: Michael Tretter <m.tretter@pengutronix.de>
Signed-off-by: Karel Zak <kzak@redhat.com>
./include/optutils.h:12:18: warning: null pointer dereference [-Wnull-dereference]
for (o = opts; o->name; o++)
~^~~~~~
In file included from libfdisk/src/dos.c:12:0:
./include/pt-mbr.h:25:47: warning: potential null pointer dereference [-Wnull-dereference]
return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
~^~~
Well these should be impossible, so add assert() to catch possible bugs.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
* include/timeutils.h
Add parse-date API
* lib/parse-date.y - new file
Lib function that parses a date string into a timespec struct.
Derived from gnulib-dd7a871 parse-datetime.y with these changes:
* reduced to a single function API renamed to parse_date()
* removed gnulib dependencies
* removed debugging
* converted to util-linux coding style
* include/cctype.h - new file
Like ctype.h only hard coded to the 'C' locale.
Used by lib/parse-date.y.
Derived from gnulib-dd7a871 c-ctype.h with these changes:
* removed gnulib dependencies
* converted to util-linux coding style
* add requisite util-linux constants
Signed-off-by: J William Piggott <elseifthen@gmx.com>
text-utils/tailf.c:69:21: warning: Using plain integer as NULL pointer
Since many 'struct option' has used zero as NULL make them more readable in
same go by reindenting, and using named argument requirements.
Reference: https://lwn.net/Articles/93577/
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Make string constants to be symbolical declarations. Use longer variable
name for rtc and cmos function pointer values. Exclude code that is
architecture specific with preprocessor directives. And remove message
duplication.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Local timegm() is a replacement function in cases it is missing from libc
implementation. Hopefully the replacement is never, or very rarely, used.
CC: Ruediger Meier <ruediger.meier@ga-group.nl>
Reviewed-by: J William Piggott <elseifthen@gmx.com>
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
* the variable definition with hidden type is always horrible, for
example:
int func() {
LIST_HEAD(foo);
...
}
the more readable is:
int func() {
struct list_head foo;
INIT_LIST_HEAD(&foo);
...
}
* the name LIST_HEAD conflict with /usr/include/sys/queue.h
* we use it only on two places in sulogin
Signed-off-by: Karel Zak <kzak@redhat.com>
Add helper functions which allow to parse hexadecimal numbers.
Based on a patch from Clemens von Mann.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Make the publicly-visible crc32 library functions prefixed by ul_, such
as crc32() -> ul_crc32().
This is because it clashes with the crc32() function from zlib.
For newer versions of glib (2.50+) zlib and libblkid are required
dependencies and otherwise results in build failure when building
statically.
Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
We don't modify data it's pointing out and we should not modify it.
Also remove casting to void * as gcc will do it automatically (before
we had to cast it explicitly to avoid warning on discarding 'const'
qualifier).
Signed-off-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>
Now libsmartcols completely control when and how wrap long
lines/cells. This is sometimes user unfriendly and it would be nice to
support multi-line cells where wrap is based on \n (new line char).
This patch add new column flag SCOLS_FL_WRAPNL.
Signed-off-by: Karel Zak <kzak@redhat.com>
* clean up function names
* add functions to temporary redirect to the pager and then restore
original terminal output
Signed-off-by: Karel Zak <kzak@redhat.com>
Implement stand-alone loopcxt_set_status(). It allows manipulation with some
loop device parameters even if it is initialized.
Its function is limited by the kernel implementation, and only a small subset of
changes is allowed.
For more see linux/drivers/block/loop.c:loop_set_status()
Signed-off-by: Stanislav Brabec <sbrabec@suse.cz>
///aaa/bbb and /aaa/bbb/ are the same paths. This is important
especially with NFS where number of slashes are not the same in
the /proc/self/mountinfo and fstab or utab. The regular URI is
euler://tmp
but /proc contains
euler:/tmp
Reported-by: Ales Novak <alnovak@suse.cz>
Signed-off-by: Karel Zak <kzak@redhat.com>
Fully safe checks of loop device need to check sizelimit. To prevent need of two
nearly equal functions, introduce sizelimit parameter to several internal
functions:
loopdev_is_used()
loopdev_find_by_backing_file()
loopcxt_is_used()
loopcxt_find_by_backing_file()
If sizelimit is zero, fall back to the old behavior (ignoring of sizelimit).
Signed-off-by: Stanislav Brabec <sbrabec@suse.cz>
Try all standard terminal input/output file descriptors when finding tty
name in get_germinal_name(). This should make all invocations of the
function as robust as they can get.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
When timestamps are intented to be conversable back from string to binary it
is best to stick with UTC-0 timezone. This is needed in utmpdump(1).
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Fix various typos in error messages, warnings, debug strings,
comments and names of static functions.
Signed-off-by: Sebastian Rasmussen <sebras@gmail.com>
- use buffers rather than allocate memory
- support .usec and ,usec convention
- use strftime for timezone (we need to care about daylight
saving time)
Signed-off-by: Karel Zak <kzak@redhat.com>
for stopping plymouthd. That do not depend on the existence of
the plymouth binary if it e.g. becomes uninstalled or an other
service is providing plymouthd facilities.
[kzak@redhat.com: - fix compiler warnings [-Wpointer-sign]
- use sizeof() for write_all()
- cast to char* for read_all]
Signed-off-by: Werner Fink <werner@suse.de>
Signed-off-by: Karel Zak <kzak@redhat.com>
For petty long time we have strdup_to_struct_member() macro to avoid
duplicate code when strdup() strings in setter functions. Let's use it
for libmount.
Signed-off-by: Karel Zak <kzak@redhat.com>
The path canonicalization is expensive and in many cases unwanted due
to problems with readlink() on unreachable NFS and automounters.
This patch add a possibility to search also by $(CWD)/<path> if the
<path> is relative to reduce number of situation when we convert the
path to the canonical absolute path.
The common use-case:
# cd /some/long/path
# umount ./mountpoint
old version:
15543: libmount: TAB: [0x560a99a54230]: lookup TARGET: './test'
15543: libmount: CACHE: [0x560a99a54290]: canonicalize path ./test
15543: libmount: CACHE: [0x560a99a54290]: add entry [ 1] (path): /mnt/test: ./test
15543: libmount: TAB: [0x560a99a54230]: lookup canonical TARGET: '/mnt/test'
15543: libmount: CXT: [0x560a99a54050]: umount fs: /mnt/test
new version:
15597: libmount: TAB: [0xabf230]: lookup TARGET: './test'
15597: libmount: TAB: [0xabf230]: lookup absolute TARGET: '/mnt/test'
15597: libmount: CXT: [0xabf050]: umount fs: /mnt/test
Signed-off-by: Karel Zak <kzak@redhat.com>
Later version of bcache add different checksum types, and allow for superblocks
greater than 4k - skipping the checksum check (as in most other probes) is the
easiest solution.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Currently the code supports /dev/name or PARTUUID= only. We also
need to support 'maj:min' and 'hexhex' notations.
Reported-by: George Spelvin <linux@horizon.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
After this commit the following produces zero matches.
$ for i in \
_PATH_DEV_TTY \
_PATH_INITTAB \
_PATH_MNTTAB_DIR \
_PATH_MOUNTED_LOCK \
_PATH_MOUNTED_TMP \
_PATH_RC \
_PATH_REBOOT \
_PATH_SECURE \
_PATH_SECURETTY \
_PATH_SHUTDOWN_CONF \
_PATH_SINGLE \
_PATH_UMOUNT \
_PATH_USERTTY
do git grep $i; done
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
The file is no portable (#ifdef HAVE_SYS_SYSMACROS_H is necessary),
but needed on many places. It seems better to keep it in c.h.
Signed-off-by: Karel Zak <kzak@redhat.com>
I have validated that we are still compatible at least back to
- openSUSE 11.4
- SLE 11
- RHEL/CentOS 6
- OSX 10.10.x, (Xcode 6.3)
- FreeBSD 10.2
Confirmed incompatibility:
- OSX 10.9.x, (Xcode 6.2)
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
- let's support multibyte table titles
- use lib/mbalign.c to align the title
- rename title_wrap to title_padding (we already use "wrap" on another
places for another things)
Signed-off-by: Karel Zak <kzak@redhat.com>
Almost any code calling get_terminal_width() checks returned width for
non-positive values and sets it to some default value (say, 80). So,
let's pass this default value directly to the function.
[kzak@redhat.com: - get_terminal_width() refactoring]
Signed-off-by: Karel Zak <kzak@redhat.com>
sysconf(_SC_GETPW_R_SIZE_MAX) returns initial suggested size for pwd
buffer (see getpwnam_r man page or POSIX). This is not large enough in
some cases.
Yes, this sysconf option is misnamed (should be _SC_GETPW_R_SIZE_MIN).
Signed-off-by: Karel Zak <kzak@redhat.com>
Purpose of this function is to open a path that is potentially pointing to a
block device or file without races. The function also proper open(3) flags
are used to check the device is not busy, and finally warning is been
printed if a block device happens to be misaligned.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Check if a file descriptor and path or stat structure are represent the same
file. This function is needed for TACTOU avoidance.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
From v4.4, linux kernel starts to support direct I/O and
AIO to backing file for loop driver, so allow losetup to
enable the feature by using LOOP_SET_DIRECT_IO ioctl cmd.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
I use Intel Rapid Start Technology on my PC. According to their User Guide
"Rapid_Start_Technology_User_Guide_v1.4.pdf" I create a partition with id=84
for hibernation by this Technology.
Unfortunately the software fdisk (util-linux-2.27) classifies that partition as
"OS/2 hidden C:". That is not wrong, but on website
https://en.wikipedia.org/wiki/Partition_type is written, that id 0x84 beside
using for hiding drive C: this type is a also used as hibernation partition for
Microsoft APM and also for Intel Rapid Start
So I patched 2 header files so that fdisk recognize this partition type variation.
Signed-off-by: Karel Zak <kzak@redhat.com>
i used a partitioning+formatting tool product rufus 2.2. of
https://rufus.akeo.ie/ This software has an extra format option for older BIOS.
With this fix the main partition is created with some alignments and for the
remaining unallocated space a small extra and empty partition with
identification 0xEA is created.
On the List of partition identifiers for PCs at
http://www.win.tue.nl/~aeb/partitions/partition_types-1.html is is said that
there is a freedesktop proposal to use also type ea as boot partition
Unfortunately the software fdisk (util-linux-2.27) can not classify that
partition. I send for the fdisk program my 2 patches so that fdisk recognize
this partition type.
Signed-off-by: Karel Zak <kzak@redhat.com>
This patch introduces smart crc32 function that is able to exclude
specified. The advantage is that we does not have to modify GPT header
(set the current in-header crc field to zero) when we count crc32.
This allows to keep GPT header in read-only buffers and simplify code.
Signed-off-by: Karel Zak <kzak@redhat.com>
The utils when compiled WITHOUT libuser then mkostemp()ing
"/etc/%s.XXXXXX" where the filename prefix is argv[0] basename.
An attacker could repeatedly execute the util with modified argv[0]
and after many many attempts mkostemp() may generate suffix which
makes sense. The result maybe temporary file with name like rc.status
ld.so.preload or krb5.keytab, etc.
Note that distros usually use libuser based ch{sh,fn} or stuff from
shadow-utils.
It's probably very minor security bug.
Addresses: CVE-2015-5224
Signed-off-by: Karel Zak <kzak@redhat.com>
Let's move color names to sequence translation to separate file to
make it usable without all the stuff in lib/colors.c.
Signed-off-by: Karel Zak <kzak@redhat.com>
Make skipping two lines more robust, and add message about unexpected
adjfile contents when running with --verbose.
Reviewed-by: Karel Zak <kzak@redhat.com>
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
The kernel of FreeBSD version 10 and higher supports this fcntl command,
but the system libc, in this case glibc, might not yet know about it.
Signed-off-by: Guillem Jover <guillem@hadrons.org>
This function duplicates and marks a file descriptor as close-on-exec.
Takes care of build and run-time support for the fcntl F_DUPFD_CLOEXEC
command, and other errors.
Signed-off-by: Guillem Jover <guillem@hadrons.org>
Well, I don't have mental power to use function names like
sysfs_devname_to_dev_name()
so this patch renames to
sysfs_devname_sys_to_dev()
sysfs_devname_dev_to_sys()
It also cleanups usage of the functions. We have to be sure that
sysfs.c code returns regular devnames. The existence of the sysfs
devnames (with '!') should be completely hidden in sysfs specific
code.
Signed-off-by: Karel Zak <kzak@redhat.com>
d0dc6c1 introduced translation of /sys names to /dev names, as required
by the kernel linux/drivers/base/core.c: device_get_devnode(). But there
are other places of code that use /dev names in /sys. They need reverse
translation from '/' to '!'.
For example, fdisk -l returns empty list since a22c6eb for device nodes
in subdirectories (used e. g. by cciss driver).
Introduce yet another helper sysfs_dev_name_to_devname() and use it where
appropriate.
Signed-off-by: Stanislav Brabec <sbrabec@suse.cz>
linux/drivers/base/core.c: device_get_devnode() defines a translation of
'!' in sysfs nodes to '/' in /dev nodes. The same translation has to be
done to properly support device nodes with slash (e. g. device nodes of
cciss driver and several other drivers).
Introduce new helper sysfs_devname_to_devno() and use it where
appropriate.
Fixes for example lsblk -f on devices using cciss driver.
Signed-off-by: Stanislav Brabec <sbrabec@suse.cz>
The function uses "int" as argument, but for array size (and index) is better
to use unsigned type (size_t). If we mix "size_t" in util (e.g. fdisk)
and "int" in lib/strutils.c then result is unexpected behavior on
ppc64.
# sfdisk --list -o DEVICE,START,SIZE /dev/sdb
Disk /dev/sdb: 50 MiB, 52428800 bytes, 102400 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 32768 bytes
Disklabel type: gpt
Disk identifier: 3B8559DB-33AF-43E9-BEFC-C331D829B539
lt-sfdisk: libfdisk/src/label.c:178: fdisk_label_get_field: Assertion `id > 0' failed.
The patch cleanup all code to use size_t everywhere.
Signed-off-by: Karel Zak <kzak@redhat.com>
It seems that static builds require -lpthread for timer_* functions.
It's better to keep it out of our libs (e.g. libmount) to avoid
unnecessary dependence.
Signed-off-by: Karel Zak <kzak@redhat.com>
http://www.freedesktop.org/software/systemd/man/os-release.html
The file /etc/os-release takes precedence over /usr/lib/os-release.
Applications should check for the former, and exclusively use its data
if it exists, and only fall back to /usr/lib/os-release if it is
missing.
Reported-by: Dimitri John Ledkov <dimitri.j.ledkov@intel.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
Signal ALRM raised by the timer, and the timer only, will be considered
as a timeout criteria.
Secondly time interval is made to use monotonic clock. Documentation of
ITIMER_REAL is unclear whether that time is affected various sources of
clock skew, or does it even tick when system is suspended.
Reviewed-by: Karel Zak <kzak@redhat.com>
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
The directories /{sbin,bin} are symliks to /usr/{sbin,bin} on many
systems. This patch add new ./configure option to remove the non-usr
paths from the default $PATH environment variable.
The default $PATH is hardcoded in login(1) and can be overwritten
by /etc/login.defs.
default:
./test_pathnames | grep DEFPATH
_PATH_DEFPATH /usr/local/bin:/bin:/usr/bin
_PATH_DEFPATH_ROOT /usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
--enable-usrdir-path:
./test_pathnames | grep DEFPATH
_PATH_DEFPATH /usr/local/bin:/usr/bin
_PATH_DEFPATH_ROOT /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
This patch does not modify install paths, you still have to care about
--{bin,lib}dir configure options.
Signed-off-by: Karel Zak <kzak@redhat.com>
In rare cases droping groups with setgroups(0, NULL) is an operation
that can grant a user additional privileges. User namespaces were
allwoing that operation to unprivileged users and that had to be
fixed.
Update unshare --map-root-user to disable the setgroups operation
before setting the gid_map.
This is needed as after the security fix gid_map is restricted to
privileged users unless setgroups has been disabled.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
* sami/2014wk49:
chfn: make command to obey login.defs CHFN_RESTRICT instructions
chfn: remove set_changed_data() and add add_missing()
chfn: rename prompt() to ask_new_field()
chfn: move new and old finger structs to chfn control struct
chfn: clean up parse_argv()
chfn: add minimalistic struct chfn_control
chfn: simplify parse_passwd() by using strsep()
chfn: fix usage() regression
chfn: use xasprintf() rather than bunch of strlen() and malloc() calls
chfn: rewrite prompt() to use strutils
chfn: remove function prototypes
lslogins: use hardcoded paths from pathnames.h
lslogins: add space to systemd journal header and message
lslogins: reject unknown time format arguments
lslogins: fix short options
lslogins: tell why command failed
lslogins: make journald last logs time stamps to honor --time-format
lslogins: allow changing password changed and expiration time formats
include/pt-sgi.h:103:7: runtime error: unsigned integer overflow: 0 -
1186450447 cannot be represented in type 'unsigned int'
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
OpenPAM is compatible with util-linux, with a few changes, namely
using OpenPAM's conversation function, openpam_ttyconv.
We check for Linux-PAM by querying for security/pam_misc.h, and OpenPAM
by querying for security/openpam.h.
Signed-off-by: Will Johansson <will.johansson@gmail.com>
It's usually enough to us [e]poll() to monitor kernel mount table, but
there is no way how to monitor changes in userspace mount options
(e.g. _netdev). The management of these mount options is completely
hidden in libmount and /rub/mount/utab is private libmount file.
This patch introduces new libmnt_mount API to monitor also userspace
mount table.
Signed-off-by: Karel Zak <kzak@redhat.com>
The problem is how fdisk_partition_cmp_start() compare numbers, the
function returns result from "a->start - b->start", unfortunately the
numbers are uint64, but function returns "int".
Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=1170191
Signed-off-by: Karel Zak <kzak@redhat.com>
This change is important for commands linked with libsmartcols (e.g. lsblk(1))
to make it more safe for crazy scenarios like
eval $(lsblk --fs --pairs /dev/sdb1)
where the command returns NAME="value" from filesystem LABELS (etc.)
Signed-off-by: Karel Zak <kzak@redhat.com>
__SWORD_TYPE is not available everywhere, for example it's not defined
by musl libc. It also seems that __SWORD_TYPE is not used for f_type
on some architectures (s390x).
Reported-by: Natanael Copa <ncopa@alpinelinux.org>
Signed-off-by: Karel Zak <kzak@redhat.com>
* use ul_debug_ prefix for all routines
* support <NAME>_DEBUG=all also for programs without debug mask names
(so we can avoid 0xffff mask in man pages)
* add function to print debug help
Signed-off-by: Karel Zak <kzak@redhat.com>
* use debug stuff from include/debug.h and make whereis(1) sensitive
to WHEREIS_DEBUG=0xffff mask
* fix problem with argv[] usage
# whereis -b -m -M /usr/share/man/man1 -B /usr/bin -f gcc
bin: /usr/local/bin
gcc: /usr/bin/gcc /usr/lib/gcc /usr/libexec/gcc /usr/share/man/man1/gcc.1.gz
the code ignores "-B" and /usr/bin is interpreted as search pattern,
expected result is:
# whereis -b -m -M /usr/share/man/man1 -B /usr/bin -f gcc
gcc: /usr/share/man/man1/gcc.1.gz /usr/bin/gcc
Addresses: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=765306
Signed-off-by: Karel Zak <kzak@redhat.com>
This change has motivation to make -Wall -pedantic compiler options to
spit a little bit less noise, which with luck will increase change to
notice real issues.
Multiple of these:
warning: ISO C forbids braced-groups within expressions [-Wpedantic]
And nearly 300 times reported:
include/c.h:75:41: warning: struct has no named members [-Wpedantic]
#define UL_BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); }))
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
* 'misc' of git://github.com/kerolasa/lelux-utiliteetit:
textual: share crypt() error message in sulogin and newgrp
newgrp: avoid use of obsolete getpass() function
newgrp: use libc function to read gshadow if it is available
setarch: use personality() system call when it is available
setarch: reindent code
hwclock: remove referal to deprecated keyboard interface
eject: make open_device() and select_speed() to use struct eject_control
eject: add struct eject_control to remove global variables
mountpoint: simplify if statement
mkfs.minix: fix couple compiler warnings
mountpoint: add struct mountpoint_control
last: improve code readability by renaming variable names
last: make is_phantom() when kernel config does not include audit support
lib: remove xgetpass()
include: simplify fputc_careful() in carefulputc.h
libuuid: add extern qualifiers to uuid/uuid.h system header
swapon - requires libmount and libblkid
swapoff - requires libmount
swaplabel - requires libblkid
This patch add lib/swapprober.c with blkid stuff for swap. It allows
to use and link libblkid only when necessary.
Signed-off-by: Karel Zak <kzak@redhat.com>
New version of comparisions does the same thing as the old without being
quite as difficult to understand.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
For example
$ LIBMOUNT_DEBUG=tab,cache findmnt
to debug only TAB and CACHE subsystem.
Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
This fixes the following compiler warning.
disk-utils/swaplabel.c:175:2: warning: implicit declaration of function
'get_swap_prober' [-Wimplicit-function-declaration]
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Signed-off-by: Karel Zak <kzak@redhat.com>
* parse terminal-colors.d/*.scheme files, expected format is
<name> <color-sequence>
* supported color sequences:
- color name (e.g. "red")
- dir_colors compatible xx;yy (e.g. 01;31) where the sequence may
contains control chars like \e \a ..etc.
* scheme is parsed on demand
Signed-off-by: Karel Zak <kzak@redhat.com>
Both swapon and mkswap need to know what is valid device signature, so
share the value.
[kzak@redhat.com: - use SWAP_SIGNATURE_SZ properly in write_signature()]
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Signed-off-by: Karel Zak <kzak@redhat.com>
If software archeolgists want to know how the old, and unused, swap
header looked they can dig it from the revision history.
[kzak@redhat.com: - use sizeof() for SWAP_HEADER_SIZE]
Reference: 4c85aa3a4c
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Signed-off-by: Karel Zak <kzak@redhat.com>
The mcookie should reuse existing code, and there is definitely no need
to prefer /dev/random for this utility. See reference for explanation
about later statement.
References: http://www.2uo.de/myths-about-urandom/
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
* 'common_debug' of https://github.com/ooprala/util-linux:
clean up redundant macros and defines
libfdisk: use include/debug.h
libblkid: use include/debug.h
libmount: further debug.h integration
libcommon: don't mention lib versions in debug macros
libcommon: define more debugging macros
libmount: use macros from include/debug.h
libcommon: add common debugging routines
Note that open_memstream() is POSIX-1.2008, so it's possible than not
all libc have already implemented this function.
Signed-off-by: Karel Zak <kzak@redhat.com>
Karel Zak
John Groves
J William Piggott
Nik Nyby
Niklas Hambüchen
Stanislav Brabec
Philip Prindeville
Sami Kerola
Vaclav Dolezal
Andreas Henriksson
Ruediger Meier
Sebastian Rasmussen
Heiko Carstens
Gustavo Zacarias
Igor Gnatenko
Franco Fichtner
Werner Fink
Kent Overstreet
Serge Hallyn
Boris Egorov
Casper Ti. Vector
Ming Lei
Jörg Jenderek
Benno Schulenberg
Guillem Jover
Rainer Gerhards
Eric W. Biederman
Will Johansson
Christoph Egger
Ondrej Oprala
Lauri Nurmi