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Merge pull request #4543 from endocode/djalal/fix-dynamicuser-supplementary-groups

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core: intialize user aux groups and SupplementaryGroups= when DynamicUser= is set
This commit is contained in:
Djalal Harouni 2016-11-03 11:48:28 +01:00 committed by GitHub
commit 34f139c526
6 changed files with 47 additions and 13 deletions
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3
Makefile.am
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@ -1626,6 +1626,9 @@ EXTRA_DIST += \
test/test-execute/exec-supplementarygroups-multiple-groups-default-group-user.service \
test/test-execute/exec-supplementarygroups-multiple-groups-withgid.service \
test/test-execute/exec-supplementarygroups-multiple-groups-withuid.service \
test/test-execute/exec-dynamicuser-fixeduser.service \
test/test-execute/exec-dynamicuser-fixeduser-one-supplementarygroup.service \
test/test-execute/exec-dynamicuser-supplementarygroups.service \
test/test-execute/exec-ignoresigpipe-no.service \
test/test-execute/exec-ignoresigpipe-yes.service \
test/test-execute/exec-personality-x86-64.service \

25
src/core/execute.c
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@ -773,11 +773,9 @@ static int get_fixed_group(const ExecContext *c, const char **group, gid_t *gid)
return 0;
}
static int get_fixed_supplementary_groups(const ExecContext *c,
const char *user,
const char *group,
gid_t gid,
gid_t **supplementary_gids, int *ngids) {
static int get_supplementary_groups(const ExecContext *c, const char *user,
const char *group, gid_t gid,
gid_t **supplementary_gids, int *ngids) {
char **i;
int r, k = 0;
int ngroups_max;
@ -790,8 +788,8 @@ static int get_fixed_supplementary_groups(const ExecContext *c,
/*
* If user is given, then lookup GID and supplementary groups list.
* We avoid NSS lookups for gid=0. Also we have to initialize groups
* as early as possible so we keep the list of supplementary groups
* of the caller.
* here and as early as possible so we keep the list of supplementary
* groups of the caller.
*/
if (user && gid_is_valid(gid) && gid != 0) {
/* First step, initialize groups from /etc/groups */
@ -2347,13 +2345,14 @@ static int exec_child(
*exit_status = EXIT_GROUP;
return r;
}
}
r = get_fixed_supplementary_groups(context, username, groupname,
gid, &supplementary_gids, &ngids);
if (r < 0) {
*exit_status = EXIT_GROUP;
return r;
}
/* Initialize user supplementary groups and get SupplementaryGroups= ones */
r = get_supplementary_groups(context, username, groupname, gid,
&supplementary_gids, &ngids);
if (r < 0) {
*exit_status = EXIT_GROUP;
return r;
}
r = send_user_lookup(unit, user_lookup_fd, uid, gid);

7
src/test/test-execute.c
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@ -259,6 +259,12 @@ static void test_exec_supplementary_groups(Manager *m) {
test(m, "exec-supplementarygroups-multiple-groups-withuid.service", 0, CLD_EXITED);
}
static void test_exec_dynamic_user(Manager *m) {
test(m, "exec-dynamicuser-fixeduser.service", 0, CLD_EXITED);
test(m, "exec-dynamicuser-fixeduser-one-supplementarygroup.service", 0, CLD_EXITED);
test(m, "exec-dynamicuser-supplementarygroups.service", 0, CLD_EXITED);
}
static void test_exec_environment(Manager *m) {
test(m, "exec-environment.service", 0, CLD_EXITED);
test(m, "exec-environment-multiple.service", 0, CLD_EXITED);
@ -432,6 +438,7 @@ int main(int argc, char *argv[]) {
test_exec_user,
test_exec_group,
test_exec_supplementary_groups,
test_exec_dynamic_user,
test_exec_environment,
test_exec_environmentfile,
test_exec_passenvironment,

9
test/test-execute/exec-dynamicuser-fixeduser-one-supplementarygroup.service Normal file
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@ -0,0 +1,9 @@
[Unit]
Description=Test DynamicUser with User= and SupplementaryGroups=
[Service]
ExecStart=/bin/sh -x -c 'test "$$(id -G)" = "1" && test "$$(id -g)" = "1" && test "$$(id -u)" = "1"'
Type=oneshot
User=1
DynamicUser=yes
SupplementaryGroups=1

8
test/test-execute/exec-dynamicuser-fixeduser.service Normal file
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@ -0,0 +1,8 @@
[Unit]
Description=Test DynamicUser with User=
[Service]
ExecStart=/bin/sh -x -c 'test "$$(id -G)" = "1" && test "$$(id -g)" = "1" && test "$$(id -u)" = "1"'
Type=oneshot
User=1
DynamicUser=yes

8
test/test-execute/exec-dynamicuser-supplementarygroups.service Normal file
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@ -0,0 +1,8 @@
[Unit]
Description=Test DynamicUser with SupplementaryGroups=
[Service]
ExecStart=/bin/sh -x -c 'test "$$(id -G | cut -d " " --complement -f 1)" = "1 2 3"'
Type=oneshot
DynamicUser=yes
SupplementaryGroups=1 2 3