Commit Graph

44 Commits

Author SHA1 Message Date
Alejandro Colomar
bddcd9b095 Remove superfluous casts
-  Every non-const pointer converts automatically to void *.
-  Every pointer converts automatically to void *.
-  void * converts to any other pointer.
-  const void * converts to any other const pointer.
-  Integer variables convert to each other.

I changed the declaration of a few variables in order to allow removing
a cast.

However, I didn't attempt to edit casts inside comparisons, since they
are very delicate.  I also kept casts in variadic functions, since they
are necessary, and in allocation functions, because I have other plans
for them.

I also changed a few casts to int that are better as ptrdiff_t.

This change has triggered some warnings about const correctness issues,
which have also been fixed in this patch (see for example src/login.c).

Signed-off-by: Alejandro Colomar <alx@kernel.org>
2023-02-09 10:03:03 -06:00
Alejandro Colomar
e2df287aad Don't redefine errno(3)
It is Undefined Behavior to declare errno (see NOTES in its manual page).
Instead of using the errno dummy declaration, use one that doesn't need
a comment.

Signed-off-by: Alejandro Colomar <alx@kernel.org>
2022-12-22 11:43:29 +01:00
Alejandro Colomar
170b76cdd1 Disable utmpx permanently
On Linux, utmpx and utmp are identical.  However, documentation (manual
pages) covers utmp, and just says about utmpx that it's identical to
utmp.  It seems that it's preferred to use utmp, at least by reading the
manual pages.

Moreover, we were defaulting to utmp (utmpx had to be explicitly enabled
at configuration time).  So, it seems safer to just make it permanent,
which should not affect default builds.

Signed-off-by: Alejandro Colomar <alx@kernel.org>
2022-12-22 10:31:43 +01:00
Alejandro Colomar
74c8015730 Assume RLIMIT_STACK is defined
It is required by POSIX.1-2001.

Cc: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
2022-12-15 16:22:05 -06:00
Alejandro Colomar
c916715a6c Assume RLIMIT_NOFILE is defined
It is required by POSIX.1-2001.

Cc: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
2022-12-15 16:22:05 -06:00
Alejandro Colomar
5ebf28c999 Assume RLIMIT_FSIZE is defined
It is required by POSIX.1-2001.

Cc: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
2022-12-15 16:22:05 -06:00
Alejandro Colomar
91adf3b8bb Assume RLIMIT_DATA is defined
It is required by POSIX.1-2001.

Cc: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
2022-12-15 16:22:05 -06:00
Alejandro Colomar
891d8dbedd Assume RLIMIT_CPU is defined
It is required by POSIX.1-2001.

Cc: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
2022-12-15 16:22:05 -06:00
Alejandro Colomar
7a4906fc75 Assume RLIMIT_AS is defined
It is required by POSIX.1-2001.

Cc: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
2022-12-15 16:22:05 -06:00
Alejandro Colomar
e1a39e1dfc Assume RLIMIT_CORE is defined
It is required by POSIX.1-2001.

Cc: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
2022-12-15 16:22:05 -06:00
Alejandro Colomar
b76d9b540a Remove preprocessor conditionals that are always true
Since the last commit, LIMITS is always defined.  Remove the dummy
macro, and all conditionals on it.

Signed-off-by: Alejandro Colomar <alx@kernel.org>
2022-12-15 16:22:05 -06:00
Alejandro Colomar
9d695340b4 Assume <sys/resource.h> exists
It is required by POSIX.1-2001.

Cc: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
2022-12-15 16:22:05 -06:00
Serge Hallyn
e8a2cfa7dc
Merge pull request #451 from hallyn/2021-12-05/license 2022-01-02 18:38:42 -06:00
Serge Hallyn
f93cf255d4 Update licensing info
Closes #238

Update all files to list SPDX license shortname.  Most files are
BSD 3 clause license.

The exceptions are:

serge@sl ~/src/shadow$ git grep SPDX-License | grep -v BSD-3-Clause
contrib/atudel:# SPDX-License-Identifier: BSD-4-Clause
lib/tcbfuncs.c: * SPDX-License-Identifier: 0BSD
libmisc/salt.c: * SPDX-License-Identifier: Unlicense
src/login_nopam.c: * SPDX-License-Identifier: Unlicense
src/nologin.c: * SPDX-License-Identifier: BSD-2-Clause
src/vipw.c: * SPDX-License-Identifier: GPL-2.0-or-later

Signed-off-by: Serge Hallyn <serge@hallyn.com>
2021-12-23 19:36:50 -06:00
Serge Hallyn
79157cbad8 Make shadow_logfd and Prog not extern
Closes #444
Closes #465

Signed-off-by: Serge Hallyn <serge@hallyn.com>
2021-12-23 15:18:07 -06:00
a1346054
d7c9550b7f fix spelling 2021-09-13 15:11:40 +00:00
a1346054
7687ae4dbd fix spelling and unify whitespace 2021-08-18 18:06:02 +00:00
Serge Hallyn
2b22a6909d libsubid: don't print error messages on stderr by default
Closes #325

Add a new subid_init() function which can be used to specify the
stream on which error messages should be printed.  (If you want to
get fancy you can redirect that to memory :)  If subid_init() is
not called, use stderr.  If NULL is passed, then /dev/null will
be used.

This patch also fixes up the 'Prog', which previously had to be
defined by any program linking against libsubid.  Now, by default
in libsubid it will show (subid).  Once subid_init() is called,
it will use the first variable passed to subid_init().

Signed-off-by: Serge Hallyn <serge@hallyn.com>
2021-05-15 12:38:55 -05:00
nekral-guest
e4fbf98b18 * man/limits.5.xml, libmisc/limits.c: Sort limit identifiers.
* libmisc/limits.c: Fix support for the K limit identifier.
	* libmisc/limits.c: Add missing default limit for L and U.
2011-11-06 18:39:47 +00:00
nekral-guest
07e462f01f * libmisc/limits.c: Avoid implicit conversion of integer to
boolean.
	* libmisc/basename.c: Avoid implicit conversion of pointer to
	boolean.
	* libmisc/basename.c, lib/prototypes.h (Basename): Return a
	constant string.
	* libmisc/basename.c, libmisc/obscure.c, lib/prototypes.h,
	libmisc/xmalloc.c, libmisc/getdate.h, libmisc/system.c,
	libmisc/getgr_nam_gid.c, libmisc/failure.c, libmisc/valid.c: Add
	splint annotations.
	* libmisc/chowndir.c: Avoid memory leak.
	* libmisc/chowndir.c: Do not check *printf/*puts return value.
	* libmisc/chowntty.c: Avoid implicit conversion between integer
	types.
	* libmisc/obscure.c: Return a bool when possible instead of int.
	* libmisc/shell.c: Do not check *printf/*puts return value.
	* libmisc/shell.c: Do not check execle return value.
	* libmisc/setupenv.c: Avoid implicit conversion between integer
	types.
	* libmisc/xmalloc.c: size should not be zero to avoid returning
	NULL pointers.
	* libmisc/hushed.c: Do not check *printf/*puts return value.
	* libmisc/system.c: Avoid implicit conversion of integer to
	boolean. safe_system last argument is a boolean.
	* libmisc/system.c: Check return value of dup2.
	* libmisc/system.c: Do not check *printf/*puts return value.
	* libmisc/system.c: Do not check execve return value. 
	* libmisc/salt.c: Do not check *printf/*puts return value.
	* libmisc/loginprompt.c: Do not check gethostname return value.
	* libmisc/find_new_gid.c, libmisc/find_new_uid.c: Do not check
	gr_rewind/pw_rewind return value.
	* libmisc/ttytype.c: Limit the number of parsed characters in the
	sscanf format.
	* libmisc/ttytype.c: Test if a type was really read.
	* libmisc/sub.c: Do not check *printf/*puts return value.
	* libmisc/sub.c: Avoid implicit conversion of integer to boolean.
	* src/userdel.c: Fix typo in comment.
	* src/userdel.c: Avoid implicit conversion of boolean to integer.
	* src/userdel.c: safe_system last argument is a boolean.
	* src/newusers.c: Avoid implicit conversion of boolean to integer.
	* src/newusers.c: Avoid implicit conversion of integer to boolean.
	* src/usermod.c: Add brackets.
	* src/usermod.c: Avoid implicit conversion of characters or
	integers to booleans.
	* src/vipw.c: Avoid implicit conversion of integer to boolean.
	* src/su.c: Avoid implicit conversion of integer to boolean.
	* src/su.c: Add brackets.
	* src/useradd.c: Avoid implicit conversion of characters or
	integers to booleans.
2010-08-22 19:13:53 +00:00
nekral-guest
7eb6a4b3a4 Updated copyrights. 2010-08-22 13:04:54 +00:00
nekral-guest
4375be4642 * lib/utent.c (getutline): Remove getutline(). This function is
no more used.
	* lib/groupmem.c: Limit the scope of variable i.
	* lib/shadow.c: Avoid implicit conversion of pointers and integers
	to booleans.
	* lib/shadow.c: Added brackets.
	* libmisc/limits.c: Limit the scope of variable tmpmask.
	* libmisc/copydir.c: Close opened file on failure.
	* libmisc/loginprompt.c: Limit the scope of variable envc.
	* libmisc/find_new_uid.c, libmisc/find_new_gid.c: Limit the scope
	of variable id.
2010-03-23 08:56:52 +00:00
nekral-guest
f729486b33 * libmisc/limits.c: Re-indent to make pmccabe happy. 2010-03-20 10:29:27 +00:00
nekral-guest
823735750a * libmisc/limits.c: Removed unused variable. 2010-03-19 11:25:56 +00:00
nekral-guest
dfce564026 * libmisc/limits.c: Re-indent.
* libmisc/limits.c: Reformat the documentation. Avoid personal
	comments.
	* man/limits.5.xml: Document the new features.
2010-03-18 23:20:24 +00:00
nekral-guest
52c2bb51fb * NEWS, libmisc/limits.c: Fix parsing of limits.
* NEWS, libmisc/limits.c, man/limits.5.xml: Add support for
	infinite limits.
	* NEWS, libmisc/limits.c, man/limits.5.xml: Add support for @group
	syntax.
2010-03-18 23:20:15 +00:00
nekral-guest
031279dfb2 * libmisc/limits.c: Fix the format to match the unsigned long
variable in argument.
	* libmisc/utmp.c: Fix tests. tmptty is a variable stack. ut_host
	is an array of the ut structure. None of them can be NULL.
2009-09-07 19:50:00 +00:00
nekral-guest
a326ffa435 * lib/exitcodes.h: Define E_SUCCESS as EXIT_SUCCESS. Added FIXMEs.
* libmisc/chowntty.c, libmisc/rlogin.c, libmisc/sub.c,
	src/newusers.c, libmisc/sulog.c, libmisc/system.c, src/logoutd.c,
	src/groups.c, src/id.c, lib/encrypt.c, libmisc/audit_help.c,
	libmisc/limits.c: Return EXIT_FAILURE instead of 1, and
	EXIT_SUCCESS instead of 0.
	* libmisc/audit_help.c: Replace an fprintf() by fputs().
	* libmisc/audit_help.c: Remove documentation of the audit_logger
	returned values. The function returns void.
	* libmisc/system.c: Only return status if waitpid succeeded.
	Return -1 otherwise.
2009-04-30 21:08:49 +00:00
nekral-guest
b0c0a94c66 * libmisc/limits.c: Replace strtol() by getlong().
* libmisc/limits.c: Replace HAVE_UTMPX_H by USE_UTMPX.
2009-04-28 19:12:48 +00:00
nekral-guest
10396f9536 * libmisc/limits.c: Parse the limits, umask, nice, maxlogin, file
limit with getlog() / getulong(). This also means, in case of
	non-PAM enabled systems, that the umask specified on the GECOS
	fields should start with a 0 if specified in octal. (it used to be
	force to octal). Do the appropriate cast and range checking.
2009-04-24 22:56:42 +00:00
nekral-guest
abb95d5aab * libmisc/limits.c: Add brackets and parenthesis.
* libmisc/limits.c: Avoid implicit conversion of pointers /
	integers to booleans.
	* libmisc/limits.c: Ignore the return value of umask(). We will
	never return to the original umask.
	* libmisc/limits.c: Avoid multi-statements lines.
	* libmisc/limits.c: Added default to a switch(). Report invalid
	limit strings to syslog.
	* libmisc/limits.c: Ignore the return value of fclose().
	/etc/limits is open read-only.
	* libmisc/limits.c: Ignore the return value of fputs() and
	sleep().
	* libmisc/limits.c: Check the return value of nice() and
	set_filesize_limit(), and report errors to syslog.

	* libmisc/ulimit.c, lib/prototypes.h: Return failures of
	set_filesize_limit(). Change the prototype to return an int
	instead of void.
2008-06-15 21:59:41 +00:00
nekral-guest
c7302b61ef Make sure every source files are distributed with a copyright and license.
Files with no license use the default 3-clauses BSD license. The copyright
were mostly not recorded; they were updated according to the Changelog.
"Julianne Frances Haugh and contributors" changed to "copyright holders
and contributors".
2008-04-27 00:40:09 +00:00
nekral-guest
28a9441f4f Replace printf by puts for fixed strings. This would avoid issues caused
by formats introduced in translated strings.
2008-01-24 21:07:14 +00:00
nekral-guest
bca732693b * libmisc/limits.c, libmisc/obscure.c, src/login_nopam.c,
lib/pwauth.c: Avoid empty file when USE_PAM is set.
* src/login_nopam.c: Fix warnings: resolve_hostname takes and
  returns a constant string.
2008-01-01 14:18:55 +00:00
nekral-guest
9adfc136b6 * lib/prototypes.h, configure.in, libmisc/Makefile.am,
libmisc/xgetXXbyYY.c, libmisc/xgetpwnam.c, libmisc/xgetpwuid.c,
  libmisc/xgetgrnam.c, libmisc/xgetgrgid.c, libmisc/xgetspnam.c:
  Added functions xgetpwnam(), xgetpwuid(), xgetgrnam(),
  xgetgrgid(), and xgetspnam(). They allocate memory for the
  returned structure and are more robust to successive calls. They
  are implemented with the libc's getxxyyy_r() functions if
  available.
* libmisc/limits.c, libmisc/entry.c, libmisc/chowntty.c,
  libmisc/addgrps.c, libmisc/myname.c, libmisc/rlogin.c,
  libmisc/pwdcheck.c, src/newgrp.c, src/login_nopam.c,
  src/userdel.c, src/lastlog.c, src/grpck.c, src/gpasswd.c,
  src/newusers.c, src/chpasswd.c, src/chfn.c, src/groupmems.c,
  src/usermod.c, src/expiry.c, src/groupdel.c, src/chgpasswd.c,
  src/su.c, src/useradd.c, src/groupmod.c, src/passwd.c, src/pwck.c,
  src/groupadd.c, src/chage.c, src/login.c, src/suauth.c,
  src/faillog.c, src/groups.c, src/chsh.c, src/id.c: Review all the
  usage of one of the getpwnam(), getpwuid(), getgrnam(),
  getgrgid(), and getspnam() functions. It was noticed on
  http://bugs.debian.org/341230 that chfn and chsh use a passwd
  structure after calling a pam function, which result in using
  information from the passwd structure requested by pam, not the
  original one. It is much easier to use the new xget... functions
  to avoid these issues. I've checked which call to the original
  get... functions could be left (reducing the scope of the
  structure if possible), and I've left comments to ease future
  reviews (e.g. /* local, no need for xgetpwnam */).
  Note: the getpwent/getgrent calls should probably be checked also.
* src/groupdel.c, src/expiry.c: Fix typos in comments.
* src/groupmod.c: Re-indent.
* libmisc/Makefile.am, lib/groupmem.c, lib/groupio.c, lib/pwmem.c,
  lib/pwio.c, lib/shadowmem.c, lib/shadowio.c: Move the __<xx>_dup
  functions (used by the xget... functions) from the <xx>io.c files
  to the new <xx>mem.c files. This avoid linking some utils against
  the SELinux library.
2007-11-18 23:15:26 +00:00
nekral-guest
b2120265fd Added the subversion svn:keywords property (Id) for proper identification. 2007-11-10 23:46:11 +00:00
nekral-guest
16285e6768 Add support for 2 new resource limits. Thanks to Justin Bronder for the
patch. This was reported in the Debian bug #442334.
This only impact shadow when it is not compiled with PAM support.
2007-10-27 19:45:21 +00:00
nekral-guest
8a78a8d68c [svn-upgrade] Integrating new upstream version, shadow (4.0.17) 2007-10-07 11:47:45 +00:00
nekral-guest
8451bed8b0 [svn-upgrade] Integrating new upstream version, shadow (4.0.13) 2007-10-07 11:47:01 +00:00
nekral-guest
8c50e06102 [svn-upgrade] Integrating new upstream version, shadow (4.0.10) 2007-10-07 11:46:25 +00:00
nekral-guest
8e167d28af [svn-upgrade] Integrating new upstream version, shadow (4.0.8) 2007-10-07 11:46:07 +00:00
nekral-guest
effd479bff [svn-upgrade] Integrating new upstream version, shadow (4.0.4) 2007-10-07 11:45:23 +00:00
nekral-guest
446e664caa [svn-upgrade] Integrating new upstream version, shadow (19990827) 2007-10-07 11:44:08 +00:00
nekral-guest
45c6603cc8 [svn-upgrade] Integrating new upstream version, shadow (19990709) 2007-10-07 11:44:02 +00:00