Author: kevans
Date: Wed Feb 12 02:09:12 2020
New Revision: 357791
URL: https://svnweb.freebsd.org/changeset/base/357791
Log:
MFC r357563: env(1): grow -L user/class and -U user/class options
This allows one to set the environment of the specified user either from
login.conf alone (-L) or both login.conf and ~/.login_conf if present (-U).
This is a supporting feature to allow service(8) to pull in the environment
of the "daemon" class before invoking the rc script.
Modified:
stable/11/usr.bin/env/Makefile
stable/11/usr.bin/env/env.1
stable/11/usr.bin/env/env.c
Directory Properties:
stable/11/ (props changed)
Changes in other areas also in this revision:
Modified:
stable/12/usr.bin/env/Makefile
stable/12/usr.bin/env/env.1
stable/12/usr.bin/env/env.c
Directory Properties:
stable/12/ (props changed)
Modified: stable/11/usr.bin/env/Makefile
==============================================================================
--- stable/11/usr.bin/env/Makefile Wed Feb 12 02:07:37 2020
(r357790)
+++ stable/11/usr.bin/env/Makefile Wed Feb 12 02:09:12 2020
(r357791)
@@ -4,4 +4,6 @@
PROG= env
SRCS= env.c envopts.c
+LIBADD= util
+
.include <bsd.prog.mk>
Modified: stable/11/usr.bin/env/env.1
==============================================================================
--- stable/11/usr.bin/env/env.1 Wed Feb 12 02:07:37 2020 (r357790)
+++ stable/11/usr.bin/env/env.1 Wed Feb 12 02:09:12 2020 (r357791)
@@ -31,7 +31,7 @@
.\" From FreeBSD: src/usr.bin/printenv/printenv.1,v 1.17 2002/11/26 17:33:35
ru Exp
.\" $FreeBSD$
.\"
-.Dd November 7, 2019
+.Dd January 19, 2020
.Dt ENV 1
.Os
.Sh NAME
@@ -40,6 +40,7 @@
.Sh SYNOPSIS
.Nm
.Op Fl 0iv
+.Op Fl L Ns | Ns Fl U Ar user Ns Op / Ns Ar class
.Op Fl P Ar altpath
.Op Fl S Ar string
.Op Fl u Ar name
@@ -76,6 +77,28 @@ The environment inherited
by
.Nm
is ignored completely.
+.\" -L | -U
+.It Fl L | Fl U Ar user Ns Op / Ns Ar class
+Add the environment variable definitions from
+.Xr login.conf 5
+for the specified user and login class to the environment, after
+processing any
+.Fl i
+or
+.Fl u
+options, but before processing any
+.Ar name Ns = Ns Ar value
+options.
+If
+.Fl L
+is used, only the system-wide
+.Pa /etc/login.conf.db
+file is read; if
+.Fl U
+is used, then the specified user's
+.Pa ~/.login_conf
+is read as well.
+The user may be specified by name or by uid.
.\" -P
.It Fl P Ar altpath
Search the set of directories as specified by
@@ -450,6 +473,7 @@ option as a synonym for
.Xr printenv 1 ,
.Xr sh 1 ,
.Xr execvp 3 ,
+.Xr login.conf 5 ,
.Xr environ 7
.Sh STANDARDS
The
@@ -457,7 +481,7 @@ The
utility conforms to
.St -p1003.1-2001 .
The
-.Fl P , S , u
+.Fl 0 , L , P , S , U , u
and
.Fl v
options are non-standard extensions supported by
@@ -474,6 +498,12 @@ and
.Fl v
options were added in
.Fx 6.0 .
+The
+.Fl 0 , L
+and
+.Fl U
+options were added in
+.Fx 13.0 .
.Sh BUGS
The
.Nm
Modified: stable/11/usr.bin/env/env.c
==============================================================================
--- stable/11/usr.bin/env/env.c Wed Feb 12 02:07:37 2020 (r357790)
+++ stable/11/usr.bin/env/env.c Wed Feb 12 02:09:12 2020 (r357791)
@@ -42,11 +42,16 @@ static char sccsid[] = "@(#)env.c 8.3 (Berkeley) 4/2/9
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
+#include <sys/types.h>
+
#include <err.h>
#include <errno.h>
+#include <login_cap.h>
+#include <pwd.h>
+#include <stdbool.h>
#include <stdio.h>
-#include <string.h>
#include <stdlib.h>
+#include <string.h>
#include <unistd.h>
#include "envopts.h"
@@ -69,13 +74,23 @@ main(int argc, char **argv)
{
char *altpath, **ep, *p, **parg, term;
char *cleanenv[1];
+ char *login_class, *login_name;
+ struct passwd *pw;
+ login_cap_t *lc;
+ bool login_as_user;
+ uid_t uid;
int ch, want_clear;
int rtrn;
altpath = NULL;
+ login_class = NULL;
+ login_name = NULL;
+ pw = NULL;
+ lc = NULL;
+ login_as_user = false;
want_clear = 0;
term = '\n';
- while ((ch = getopt(argc, argv, "-0iP:S:u:v")) != -1)
+ while ((ch = getopt(argc, argv, "-0iL:P:S:U:u:v")) != -1)
switch(ch) {
case '-':
case 'i':
@@ -84,6 +99,12 @@ main(int argc, char **argv)
case '0':
term = '\0';
break;
+ case 'U':
+ login_as_user = true;
+ /* FALLTHROUGH */
+ case 'L':
+ login_name = optarg;
+ break;
case 'P':
altpath = strdup(optarg);
break;
@@ -117,6 +138,48 @@ main(int argc, char **argv)
if (env_verbosity)
fprintf(stderr, "#env clearing environ\n");
}
+ if (login_name != NULL) {
+ login_class = strchr(login_name, '/');
+ if (login_class)
+ *login_class++ = '\0';
+ pw = getpwnam(login_name);
+ if (pw == NULL) {
+ char *endp = NULL;
+ errno = 0;
+ uid = strtoul(login_name, &endp, 10);
+ if (errno == 0 && *endp == '\0')
+ pw = getpwuid(uid);
+ }
+ if (pw == NULL)
+ errx(EXIT_FAILURE, "no such user: %s", login_name);
+ if (login_class != NULL) {
+ lc = login_getclass(login_class);
+ if (lc == NULL)
+ errx(EXIT_FAILURE, "no such login class: %s",
+ login_class);
+ } else {
+ lc = login_getpwclass(pw);
+ if (lc == NULL)
+ errx(EXIT_FAILURE, "login_getpwclass failed");
+ }
+
+ /*
+ * This is not done with setusercontext() because that will
+ * try and use ~/.login_conf even when we don't want it to.
+ */
+ setclassenvironment(lc, pw, 1);
+ setclassenvironment(lc, pw, 0);
+ if (login_as_user) {
+ login_close(lc);
+ if ((lc = login_getuserclass(pw)) != NULL) {
+ setclassenvironment(lc, pw, 1);
+ setclassenvironment(lc, pw, 0);
+ }
+ }
+ endpwent();
+ if (lc != NULL)
+ login_close(lc);
+ }
for (argv += optind; *argv && (p = strchr(*argv, '=')); ++argv) {
if (env_verbosity)
fprintf(stderr, "#env setenv:\t%s\n", *argv);
@@ -152,7 +215,7 @@ static void
usage(void)
{
(void)fprintf(stderr,
- "usage: env [-0iv] [-P utilpath] [-S string] [-u name]\n"
+ "usage: env [-0iv] [-L|-U user[/class]] [-P utilpath] [-S string]
[-u name]\n"
" [name=value ...] [utility [argument ...]]\n");
exit(1);
}
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