Really restore the old behaviour for pw usermod -m

It again reinstall missing skel files without overwriting changed one
Add a regression test about it

Reported by:	ae
MFC after:	3 days

3 files changed, 25 insertions, 14 deletions

diff --git a/pw/psdate.c b/pw/psdate.c
index bd2aa15..b63d882 100644
--- a/pw/psdate.c
+++ b/pw/psdate.c
@@ -41,12 +41,8 @@ static const char rcsid[] =
 static int
 numerics(char const * str)
 {
-	int             rc = isdigit((unsigned char)*str);
 
-	if (rc)
-		while (isdigit((unsigned char)*str) || *str == 'x')
-			++str;
-	return rc && !*str;
+	return (str[strspn(str, "0123456789x")] == '\0');
 }
 
 static int
diff --git a/pw/pw_user.c b/pw/pw_user.c
index 6e991a8..8cffac9 100644
--- a/pw/pw_user.c
+++ b/pw/pw_user.c
@@ -1493,7 +1493,7 @@ pw_user_mod(int argc, char **argv, char *arg1)
 	intmax_t id = -1;
 	int ch, fd = -1;
 	size_t i, j;
-	bool quiet, createhome, pretty, dryrun, nis, edited, docreatehome;
+	bool quiet, createhome, pretty, dryrun, nis, edited;
 	bool precrypted;
 	mode_t homemode = 0;
 	time_t expire_days, password_days, now;
@@ -1503,7 +1503,7 @@ pw_user_mod(int argc, char **argv, char *arg1)
 	passwd = NULL;
 	class = nispasswd = NULL;
 	quiet = createhome = pretty = dryrun = nis = precrypted = false;
-	edited = docreatehome = false;
+	edited = false;
 
 	if (arg1 != NULL) {
 		if (arg1[strspn(arg1, "0123456789")] == '\0')
@@ -1697,10 +1697,6 @@ pw_user_mod(int argc, char **argv, char *arg1)
 		edited = true;
 	}
 
-	if (createhome && fstatat(conf.rootfd, pwd->pw_dir, &st, 0) == -1) {
-		docreatehome = true;
-	}
-
 	if (homedir && strcmp(pwd->pw_dir, homedir) != 0) {
 		pwd->pw_dir = homedir;
 		edited = true;
@@ -1708,8 +1704,6 @@ pw_user_mod(int argc, char **argv, char *arg1)
 			if (!createhome)
 				warnx("WARNING: home `%s' does not exist",
 				    pwd->pw_dir);
-			else
-				docreatehome = true;
 		} else if (!S_ISDIR(st.st_mode)) {
 			warnx("WARNING: home `%s' is not a directory",
 			    pwd->pw_dir);
@@ -1801,7 +1795,7 @@ pw_user_mod(int argc, char **argv, char *arg1)
 	 * that this also `works' for editing users if -m is used, but
 	 * existing files will *not* be overwritten.
 	 */
-	if (PWALTDIR() != PWF_ALT && docreatehome && pwd->pw_dir &&
+	if (PWALTDIR() != PWF_ALT && createhome && pwd->pw_dir &&
 	    *pwd->pw_dir == '/' && pwd->pw_dir[1]) {
 		if (!skel)
 			skel = cnf->dotdir;
diff --git a/pw/tests/pw_usermod.sh b/pw/tests/pw_usermod.sh
index df056e0..6a13130 100755
--- a/pw/tests/pw_usermod.sh
+++ b/pw/tests/pw_usermod.sh
@@ -253,6 +253,26 @@ user_mod_w_yes_body() {
 		$(atf_get_srcdir)/crypt $passhash "foo"
 }
 
+atf_test_case user_mod_m
+user_mod_m_body() {
+	populate_root_etc_skel
+
+	mkdir -p ${HOME}/home
+	mkdir -p ${HOME}/skel
+	echo "entry" > ${HOME}/skel/.file
+	atf_check -s exit:0 ${RPW} useradd foo
+	! test -d ${HOME}/home/foo || atf_fail "Directory should not have been created"
+	atf_check -s exit:0 ${RPW} usermod foo -m -k /skel
+	test -d ${HOME}/home/foo || atf_fail "Directory should have been created"
+	test -f ${HOME}/home/foo/.file || atf_fail "Skell files not added"
+	echo "entry" > ${HOME}/skel/.file2
+	atf_check -s exit:0 ${RPW} usermod foo -m -k /skel
+	test -f ${HOME}/home/foo/.file2 || atf_fail "Skell files not added"
+	echo > ${HOME}/home/foo/.file2
+	atf_check -s exit:0 ${RPW} usermod foo -m -k /skel
+	atf_check -s exit:0 -o inline:"\n" cat ${HOME}/home/foo/.file2
+}
+
 
 atf_init_test_cases() {
 	atf_add_test_case user_mod
@@ -275,4 +295,5 @@ atf_init_test_cases() {
 	atf_add_test_case user_mod_w_none
 	atf_add_test_case user_mod_w_random
 	atf_add_test_case user_mod_w_yes
+	atf_add_test_case user_mod_m
 }