Commit Graph

91 Commits

Author SHA1 Message Date
Stefan Eßer
30d21d2795 Add function getlocalbase() to libutil.
This function returns the path to the local software base directory, by
default "/usr/local" (or the value of _PATH_LOCALBASE in include/paths.h
when building the world).

The value returned can be overridden by 2 methods:

- the LOCALBASE environment variable (ignored by SUID programs)
- else a non-default user.localbase sysctl value

Reviewed by:	hps (earlier version)
Relnotes:	yes
Differential Revision:	https://reviews.freebsd.org/D27236
2020-11-18 19:44:30 +00:00
Scott Long
8e1031086d Revert the whole getlocalbase() set of changes while a different design is
hashed out.
2020-11-15 20:24:59 +00:00
Scott Long
bcf9ae2751 Fix a problem with r367686 related to the use of ssize_t. Not sure how this
escaped prior testing, but it should be better now.

Reported by:	lots
2020-11-14 19:04:36 +00:00
Scott Long
98b76d2227 Add the library function getlocalbase and its manual page. This helps to
unify the retrieval of the various ways that the local software base directory,
typically "/usr/local", is expressed in the system.

Reviewed by:	se
Differential Revision:	https://reviews.freebsd.org/D27022
2020-11-14 17:57:50 +00:00
Ian Lepore
34e9190d82 Make pw_scan(3) more compatible with getpwent(3) et. al. when processing
data from /etc/passwd rather than /etc/master.passwd.

The libc getpwent(3) and related functions automatically read master.passwd
when run by root, or passwd when run by a non-root user.  When run by non-
root, getpwent() copes with the missing data by setting the corresponding
fields in the passwd struct to known values (zeroes for numbers, or a
pointer to an empty string for literals).  When libutil's pw_scan(3) was
used to parse a line without the root-accessible data, it was leaving
garbage in the corresponding fields.

These changes rename the static pw_init() function used by getpwent() and
friends to __pw_initpwd(), and move it into pw_scan.c so that common init
code can be shared between libc and libutil.  pw_scan(3) now calls
__pw_initpwd() before __pw_scan(), just like the getpwent() family does, so
that reading an arbitrary passwd file in either format and parsing it with
pw_scan(3) returns the same results as getpwent(3) would.

This also adds a new pw_initpwd(3) function to libutil, so that code which
creates passwd structs from scratch in some manner that doesn't involve
pw_scan() can initialize the struct to the values expected by lots of
existing code, which doesn't expect to encounter NULL pointers or garbage
values in some fields.
2018-07-26 18:34:38 +00:00
Pedro F. Giffuni
5e53a4f90f lib: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using mis-identified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-26 02:00:33 +00:00
Mariusz Zaborski
73979478cc Introduce the flopenat(3) function.
Reviewed by:	des, emaste
Differential Revision:	https://reviews.freebsd.org/D11690
2017-08-04 14:24:24 +00:00
Baptiste Daroussin
c24c3080ea revert r283969,283970 not needed anymore after r283981 2015-06-04 08:00:11 +00:00
Baptiste Daroussin
972cf03ed9 Add a pw_mkdb2(3) function which does the same thing as pw_mkdb(3) except
it takes a new argument allowing to specify the endianness of the database
to generate

Differential Revision:	https://reviews.freebsd.org/D2730
Reviewed by:	ian
2015-06-03 20:48:28 +00:00
John Baldwin
ff87ae350e Export a list of VM objects in the system via a sysctl. The list can be
examined via 'vmstat -o'.  It can be used to determine which files are
using physical pages of memory and how much each is using.

Differential Revision:	https://reviews.freebsd.org/D2277
Reviewed by:	alc, kib
MFC after:	2 weeks
Sponsored by:	Norse Corp, Inc. (forward porting to HEAD/10)
2015-05-27 18:11:05 +00:00
Diane Bruce
86e2f99d40 Cleanup gr_add() so it does not leak mem
This is part of ongoing work on sbin/pw

M    libutil.h
M    gr_util.c

Approved by:	theraven
2013-03-07 19:00:00 +00:00
Baptiste Daroussin
2bfeb4fe75 - Clean up previous gr_add use malloc instead of calloc
- Fix tinderbox error

Submitted by:	db
2012-12-27 16:51:29 +00:00
Baptiste Daroussin
be49c83011 New gr_add function to provide a clean and safe method to append a new member
into an existing group.

Submitted by:	db
2012-12-27 14:30:19 +00:00
Guy Helmer
0e4b06c859 Consensus between bde and pjd seemed to be that if the function names
are lined up, then any * after a long type should appear after the
type instead of being in front of the function name on the following
line.
2012-01-26 20:40:22 +00:00
Guy Helmer
56db75745d Make the comments consistent (capitalization, punctuation, and
format).

Requested by bde
2012-01-26 20:35:01 +00:00
Guy Helmer
edd38b5148 Restore the parenthesis that are necessary around the constant values.
Requested by bde.
2012-01-26 20:33:08 +00:00
Guy Helmer
34775f8907 Fix more disorder in prototypes and constants.
Fix header comments for each section of constants.
Fix whitespace in #define lines.
Fix unnecessary parenthesis in constants.
2012-01-16 21:19:23 +00:00
Guy Helmer
47b3924be0 Move struct pidfh definition into pidfile.c, and leave a forward declaration
for pidfh in libutil.h in its place.
This allows us to hide the contents of the pidfh structure, and also
allowed removal of the "#ifdef _SYS_PARAM_H" guard from around the
pidfile_* function prototypes.

Suggested by pjd.
2012-01-12 22:49:36 +00:00
Guy Helmer
8afc5005d8 More prototype formatting fixes, struct member formatting fixes,
and namespace fix for property_find() prototype.

Provided by bde.
2012-01-12 14:40:25 +00:00
Guy Helmer
744c415775 Fix prototype formatting (indentation, long lines, and continued lines).
Requested by bde.
2012-01-11 22:45:15 +00:00
Guy Helmer
a8cada5425 Fix namespace issues with prototype parameter names.
Add missing prototype parameter names.

Requested by bde.
2012-01-11 22:33:41 +00:00
Guy Helmer
46719410f3 Fix forward structure declaration and prototype disorder.
Requested by bde.
2012-01-11 22:12:45 +00:00
Pawel Jakub Dawidek
9de091f2ef Constify arguments. 2012-01-11 00:31:04 +00:00
Guy Helmer
f295618d06 Add pidfile_fileno() to obtain the file descriptor for an open
pidfile.
2012-01-10 19:53:25 +00:00
Baptiste Daroussin
a9e4a4780a Add new pw_make_v7 to make a passwd line (in v7 format) out of a struct passwd
while here, fix missing parentheses of the return statement of pw_make.

Approved by:	des (mentor)
2012-01-05 10:40:24 +00:00
Baptiste Daroussin
1926f2f6fa Modify pw_copy:
- if pw is NULL and oldpw is not NULL then the oldpw is deleted
- if pw->pw_name != oldpw->pw_name but pw->pw_uid == oldpw->pw_uid
then it renames the user

add new gr_* functions so now gr_util API is similar to pw_util API,
this allow to manipulate groups in a safe way.

Reviewed by:	des
Approved by:	des
MFC after:	1 month
2011-12-15 22:07:36 +00:00
Stanislav Sedov
0daf62d9f5 - Commit work from libprocstat project. These patches add support for runtime
file and processes information retrieval from the running kernel via sysctl
  in the form of new library, libprocstat.  The library also supports KVM backend
  for analyzing memory crash dumps.  Both procstat(1) and fstat(1) utilities have
  been modified to take advantage of the library (as the bonus point the fstat(1)
  utility no longer need superuser privileges to operate), and the procstat(1)
  utility is now able to display information from memory dumps as well.

  The newly introduced fuser(1) utility also uses this library and able to operate
  via sysctl and kvm backends.

  The library is by no means complete (e.g. KVM backend is missing vnode name
  resolution routines, and there're no manpages for the library itself) so I
  plan to improve it further.  I'm commiting it so it will get wider exposure
  and review.

  We won't be able to MFC this work as it relies on changes in HEAD, which
  was introduced some time ago, that break kernel ABI.  OTOH we may be able
  to merge the library with KVM backend if we really need it there.

Discussed with:	rwatson
2011-05-12 10:11:39 +00:00
David E. O'Brien
b928a692c2 Don't duplicate define the stdint types. 2011-05-05 14:45:24 +00:00
Xin LI
7d14df1a2d Add support for IEE/IEC (and now also SI) power of two notions of
prefixes (Ki, Mi, Gi...) for humanize_number(3).

Note that applications has to pass HN_IEC_PREFIXES to use this
feature for backward compatibility reasons.

Reviewed by:	arundel
MFC after:	2 weeks
2011-04-12 22:48:03 +00:00
Pawel Jakub Dawidek
fdf6b12d1c expand_number() needs uint64_t, declare it here if not already declared.
MFC after:	3 days
2011-03-06 17:46:06 +00:00
Dag-Erling Smørgrav
bbb2703b4f Simplify expand_number() by combining the (unrolled) loop with the
switch.  Since expand_number() does not accept negative numbers, switch
from int64_t to uint64_t; this makes it easier to check for overflow.

MFC after:	3 weeks
2010-08-14 14:34:36 +00:00
Dag-Erling Smørgrav
1a0fda2b54 IFH@204581 2010-03-04 13:35:57 +00:00
Ed Schouten
21470ecd91 Remove login(3), logout(3) and logwtmp(3) from libutil.
These functions only apply to utmp(5). They cannot be kept intact when
moving towards utmpx. The login(3) function would break, because its
argument is an utmp structure. The logout(3) and logwtmp(3) functions
cannot be used, since they provide a functionality which partially
overlaps.

Increment SHLIB_MAJOR to 9 to indicate the removal.
2010-01-13 18:59:51 +00:00
Kirk McKusick
aee785babd Add and document the quota_convert function which converts between the
old 32-bit and the new 64-bit formats.
2009-12-28 22:44:19 +00:00
Ed Schouten
8b8ec2e2b1 Make <libutil.h> work when included by itself.
There are several reasons why it didn't work:

- It was missing <sys/cdefs.h> for __BEGIN_DECLS.
- It uses various primitive types that were not declared.
2009-12-02 15:56:18 +00:00
Kirk McKusick
e525d16a80 Add and document new quoat_on and quota_off functions. 2009-11-16 18:59:04 +00:00
Kirk McKusick
6197731d81 Add quota_maxid which returns the maximum user (or group) identifier
in an associated quotafile. Needed by repquota.

Bug fix in quota_read.
2009-10-20 05:37:54 +00:00
Dag-Erling Smørgrav
5666aadb3d Further extend the quotafile API. 2009-09-26 23:16:06 +00:00
Kirk McKusick
8bd6a3ab4b Update the quotafile library to manage both active quotas via the
quotactl(2) interface and inactive quotas by accessing the quota
files directly.

Update the edquota program to use this new interface as proof of
concept.
2009-02-14 08:08:08 +00:00
Kirk McKusick
a88984f248 Make hasquota thread safe. 2009-02-13 19:56:59 +00:00
Kirk McKusick
916e406eb5 Move hasquota() function to libutil. 2009-02-13 06:12:15 +00:00
Dag-Erling Smørgrav
1b3515f39b WIP 2009-01-30 13:54:03 +00:00
Peter Wemm
43151ee6cf Merge user/peter/kinfo branch as of r185547 into head.
This changes struct kinfo_filedesc and kinfo_vmentry such that they are
same on both 32 and 64 bit platforms like i386/amd64 and won't require
sysctl wrapping.

Two new OIDs are assigned.  The old ones are available under
COMPAT_FREEBSD7 - but it isn't that simple.  The superceded interface
was never actually released on 7.x.

The other main change is to pack the data passed to userland via the
sysctl.  kf_structsize and kve_structsize are reduced for the copyout.
If you have a process with 100,000+ sockets open, the unpacked records
require a 132MB+ copyout.  With packing, it is "only" ~35MB.  (Still
seriously unpleasant, but not quite as devastating).  A similar problem
exists for the vmentry structure - have lots and lots of shared libraries
and small mmaps and its copyout gets expensive too.

My immediate problem is valgrind.  It traditionally achieves this
functionality by parsing procfs output, in a packed format.  Secondly, when
tracing 32 bit binaries on amd64 under valgrind, it uses a cross compiled
32 bit binary which ran directly into the differing data structures in 32
vs 64 bit mode.  (valgrind uses this to track file descriptor operations
and this therefore affected every single 32 bit binary)

I've added two utility functions to libutil to unpack the structures into
a fixed record length and to make it a little more convenient to use.
2008-12-02 06:50:26 +00:00
John Baldwin
e1355b07ee Merge hexdump(9) to userland as hexdump(3) in libutil. I'm tired of doing
this by hand in userland utilities.

MFC after:	1 month
2008-07-01 22:30:57 +00:00
Sean Farley
0b5e889911 Add four utility functions related to struct grp processing modeled in-part
after similar calls related to struct pwd in libutil/pw_util.c:
  - gr_equal()
    Perform a deep comparison of two struct grp's.  It does a thorough, yet
    unoptimized comparison of all the members regardless of order.

  - gr_make()
    Create a string (see group(5)) from a struct grp.

  - gr_dup()
    Duplicate a struct grp.  Returns a value that is a single contiguous
    block of memory.

  - gr_scan()
    Create a struct grp from a string (as produced by gr_make()).

MFC after:	3 weeks
2008-04-23 00:49:13 +00:00
John Birrell
26fc37307b Constify the first argument to expand_number() so that it can
be called with a const without the compiler grisling.
2007-11-18 02:20:02 +00:00
Pawel Jakub Dawidek
bd35b57de2 Implement expand_number(3), which is the opposite of humanize_number(3), ie.
a number in human-readable form is converted to int64_t, for example:
123b -> 123
10k -> 10240
16G -> 17179869184

First version submitted by:	Eric Anderson <anderson@freebsd.org>
Approved by:	re (bmah)
2007-09-01 06:19:11 +00:00
Dag-Erling Smørgrav
8f9085389f Well gag me with a spoon... I'm so used to working at high WARNS levels
that I make stupid fundamental mistakes like this when I don't.
2007-05-10 15:01:42 +00:00
Dag-Erling Smørgrav
9667055264 I'm tired of seeing this done incorrectly and non-portably, so add a
flopen(3) function which reliably opens and locks a file.

MFC after:	3 weeks
2007-05-10 14:43:31 +00:00
Dag-Erling Smørgrav
501092bbc8 Add utility functions for checking if a given kernel module is loaded,
and loading it.
2006-02-18 11:25:28 +00:00