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shared: add %g, %G specifiers for group / gid (#10368)

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This commit is contained in:
Davide Cavalca 2018-10-13 01:26:48 -07:00 committed by Yu Watanabe
parent b4b3649a94
commit b75f0c69b3
15 changed files with 89 additions and 16 deletions
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14
man/systemd.unit.xml
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@ -1486,8 +1486,8 @@
</variablelist>
<para>The following specifiers are interpreted in the Install
section: %n, %N, %p, %i, %j, %U, %u, %m, %H, %b, %v. For their meaning
see the next section.
section: %n, %N, %p, %i, %j, %g, %G, %U, %u, %m, %H, %b, %v. For their
meaning see the next section.
</para>
</refsect1>
@ -1614,6 +1614,16 @@
<entry>Directory for temporary files</entry>
<entry>This is either <filename>/tmp</filename> or the path <literal>$TMPDIR</literal>, <literal>$TEMP</literal> or <literal>$TMP</literal> are set to.</entry>
</row>
<row>
<entry><literal>%g</literal></entry>
<entry>User group</entry>
<entry>This is the name of the group running the service manager instance. In case of the system manager this resolves to <literal>root</literal>.</entry>
</row>
<row>
<entry><literal>%G</literal></entry>
<entry>User GID</entry>
<entry>This is the numeric GID of the user running the service manager instance. In case of the system manager this resolves to <literal>0</literal>.</entry>
</row>
<row>
<entry><literal>%u</literal></entry>
<entry>User name</entry>

10
man/tmpfiles.d.xml
View File

@ -628,6 +628,16 @@ w- /proc/sys/vm/swappiness - - - - 10</programlisting></para>
<entry>Directory for temporary files</entry>
<entry>This is either <filename>/tmp</filename> or the path <literal>$TMPDIR</literal>, <literal>$TEMP</literal> or <literal>$TMP</literal> are set to.</entry>
</row>
<row>
<entry><literal>%g</literal></entry>
<entry>User group</entry>
<entry>This is the name of the group running the command. In case of the system instance this resolves to <literal>root</literal>.</entry>
</row>
<row>
<entry><literal>%G</literal></entry>
<entry>User GID</entry>
<entry>This is the numeric GID of the group running the command. In case of the system instance this resolves to <constant>0</constant>.</entry>
</row>
<row>
<entry><literal>%u</literal></entry>
<entry>User name</entry>

4
src/core/unit-printf.c
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@ -196,6 +196,8 @@ int unit_name_printf(Unit *u, const char* format, char **ret) {
{ 'p', specifier_prefix, NULL },
{ 'i', specifier_string, u->instance },
{ 'g', specifier_group_name, NULL },
{ 'G', specifier_group_id, NULL },
{ 'U', specifier_user_id, NULL },
{ 'u', specifier_user_name, NULL },
@ -264,6 +266,8 @@ int unit_full_printf(Unit *u, const char *format, char **ret) {
{ 'T', specifier_tmp_dir, NULL },
{ 'V', specifier_var_tmp_dir, NULL },
{ 'g', specifier_group_name, NULL },
{ 'G', specifier_group_id, NULL },
{ 'U', specifier_user_id, NULL },
{ 'u', specifier_user_name, NULL },
{ 'h', specifier_user_home, NULL },

2
src/shared/install-printf.c
View File

@ -129,6 +129,8 @@ int install_full_printf(UnitFileInstallInfo *i, const char *format, char **ret)
{ 'i', specifier_instance, NULL },
{ 'j', specifier_last_component, NULL },
{ 'g', specifier_group_name, NULL },
{ 'G', specifier_group_id, NULL },
{ 'U', specifier_user_id, NULL },
{ 'u', specifier_user_name, NULL },

18
src/shared/specifier.c
View File

@ -175,6 +175,24 @@ int specifier_kernel_release(char specifier, void *data, void *userdata, char **
return 0;
}
int specifier_group_name(char specifier, void *data, void *userdata, char **ret) {
char *t;
t = gid_to_name(getgid());
if (!t)
return -ENOMEM;
*ret = t;
return 0;
}
int specifier_group_id(char specifier, void *data, void *userdata, char **ret) {
if (asprintf(ret, UID_FMT, getgid()) < 0)
return -ENOMEM;
return 0;
}
int specifier_user_name(char specifier, void *data, void *userdata, char **ret) {
char *t;

2
src/shared/specifier.h
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@ -20,6 +20,8 @@ int specifier_boot_id(char specifier, void *data, void *userdata, char **ret);
int specifier_host_name(char specifier, void *data, void *userdata, char **ret);
int specifier_kernel_release(char specifier, void *data, void *userdata, char **ret);
int specifier_group_name(char specifier, void *data, void *userdata, char **ret);
int specifier_group_id(char specifier, void *data, void *userdata, char **ret);
int specifier_user_name(char specifier, void *data, void *userdata, char **ret);
int specifier_user_id(char specifier, void *data, void *userdata, char **ret);
int specifier_user_home(char specifier, void *data, void *userdata, char **ret);

9
src/test/test-systemd-tmpfiles.py
View File

@ -12,6 +12,7 @@ import socket
import subprocess
import tempfile
import pwd
import grp
try:
from systemd import id128
@ -95,9 +96,13 @@ def test_valid_specifiers(*, user):
test_content('f {} - - - - %H', '{}'.format(socket.gethostname()), user=user)
test_content('f {} - - - - %v', '{}'.format(os.uname().release), user=user)
test_content('f {} - - - - %U', '{}'.format(os.getuid()), user=user)
test_content('f {} - - - - %G', '{}'.format(os.getgid()), user=user)
user = pwd.getpwuid(os.getuid())
test_content('f {} - - - - %u', '{}'.format(user.pw_name), user=user)
puser = pwd.getpwuid(os.getuid())
test_content('f {} - - - - %u', '{}'.format(puser.pw_name), user=user)
pgroup = grp.getgrgid(os.getgid())
test_content('f {} - - - - %g', '{}'.format(pgroup.gr_name), user=user)
# Note that %h is the only specifier in which we look the environment,
# because we check $HOME. Should we even be doing that?

12
src/test/test-unit-file.c
View File

@ -621,11 +621,13 @@ static void test_install_printf(void) {
UnitFileInstallInfo i3 = { .name = name3, .path = path3, };
UnitFileInstallInfo i4 = { .name = name3, .path = path3, };
_cleanup_free_ char *mid = NULL, *bid = NULL, *host = NULL, *uid = NULL, *user = NULL;
_cleanup_free_ char *mid = NULL, *bid = NULL, *host = NULL, *gid = NULL, *group = NULL, *uid = NULL, *user = NULL;
assert_se(specifier_machine_id('m', NULL, NULL, &mid) >= 0 && mid);
assert_se(specifier_boot_id('b', NULL, NULL, &bid) >= 0 && bid);
assert_se(host = gethostname_malloc());
assert_se(group = gid_to_name(getgid()));
assert_se(asprintf(&gid, UID_FMT, getgid()) >= 0);
assert_se(user = uid_to_name(getuid()));
assert_se(asprintf(&uid, UID_FMT, getuid()) >= 0);
@ -652,6 +654,8 @@ static void test_install_printf(void) {
expect(i, "%p", "name");
expect(i, "%i", "");
expect(i, "%j", "name");
expect(i, "%g", group);
expect(i, "%G", gid);
expect(i, "%u", user);
expect(i, "%U", uid);
@ -659,12 +663,16 @@ static void test_install_printf(void) {
expect(i, "%b", bid);
expect(i, "%H", host);
expect(i2, "%g", group);
expect(i2, "%G", gid);
expect(i2, "%u", user);
expect(i2, "%U", uid);
expect(i3, "%n", "name@inst.service");
expect(i3, "%N", "name@inst");
expect(i3, "%p", "name");
expect(i3, "%g", group);
expect(i3, "%G", gid);
expect(i3, "%u", user);
expect(i3, "%U", uid);
@ -672,6 +680,8 @@ static void test_install_printf(void) {
expect(i3, "%b", bid);
expect(i3, "%H", host);
expect(i4, "%g", group);
expect(i4, "%G", gid);
expect(i4, "%u", user);
expect(i4, "%U", uid);
}

8
src/test/test-unit-name.c
View File

@ -191,7 +191,7 @@ static void test_unit_name_mangle(void) {
}
static int test_unit_printf(void) {
_cleanup_free_ char *mid = NULL, *bid = NULL, *host = NULL, *uid = NULL, *user = NULL, *shell = NULL, *home = NULL;
_cleanup_free_ char *mid = NULL, *bid = NULL, *host = NULL, *gid = NULL, *group = NULL, *uid = NULL, *user = NULL, *shell = NULL, *home = NULL;
_cleanup_(manager_freep) Manager *m = NULL;
Unit *u;
int r;
@ -200,7 +200,9 @@ static int test_unit_printf(void) {
assert_se(specifier_boot_id('b', NULL, NULL, &bid) >= 0 && bid);
assert_se(host = gethostname_malloc());
assert_se(user = uid_to_name(getuid()));
assert_se(group = gid_to_name(getgid()));
assert_se(asprintf(&uid, UID_FMT, getuid()));
assert_se(asprintf(&gid, UID_FMT, getgid()));
assert_se(get_home_dir(&home) >= 0);
assert_se(get_shell(&shell) >= 0);
@ -241,6 +243,8 @@ static int test_unit_printf(void) {
expect(u, "%I", "");
expect(u, "%j", "blah");
expect(u, "%J", "blah");
expect(u, "%g", group);
expect(u, "%G", gid);
expect(u, "%u", user);
expect(u, "%U", uid);
expect(u, "%h", home);
@ -263,6 +267,8 @@ static int test_unit_printf(void) {
expect(u, "%I", "foo/foo");
expect(u, "%j", "blah");
expect(u, "%J", "blah");
expect(u, "%g", group);
expect(u, "%G", gid);
expect(u, "%u", user);
expect(u, "%U", uid);
expect(u, "%h", home);

2
src/tmpfiles/tmpfiles.c
View File

@ -174,6 +174,8 @@ static const Specifier specifier_table[] = {
{ 'H', specifier_host_name, NULL },
{ 'v', specifier_kernel_release, NULL },
{ 'g', specifier_group_name, NULL },
{ 'G', specifier_group_id, NULL },
{ 'U', specifier_user_id, NULL },
{ 'u', specifier_user_name, NULL },
{ 'h', specifier_user_home, NULL },

8
test/test-execute/exec-specifier.service
View File

@ -19,9 +19,11 @@ ExecStart=test %L = /var/log
ExecStart=test %E = /etc
ExecStart=test %T = /tmp
ExecStart=test %V = /var/tmp
ExecStart=sh -c 'test %u = $$(id -un 0)'
ExecStart=test %U = 0
ExecStart=sh -c 'test %h = $$(getent passwd 0 | cut -d: -f 6)'
ExecStart=sh -c 'test %u = $$(id -un)'
ExecStart=sh -c 'test %U = $$(id -u)'
ExecStart=sh -c 'test %g = $$(id -gn)'
ExecStart=sh -c 'test %G = $$(id -g)'
ExecStart=test %h = /root
ExecStart=sh -c 'test %s = /bin/sh'
ExecStart=sh -c 'test %m = $$(cat /etc/machine-id)'
ExecStart=sh -c 'test %b = $$(cat /proc/sys/kernel/random/boot_id | sed -e 's/-//g')'

8
test/test-execute/exec-specifier@.service
View File

@ -17,9 +17,11 @@ ExecStart=test %S = /var/lib
ExecStart=test %C = /var/cache
ExecStart=test %L = /var/log
ExecStart=test %E = /etc
ExecStart=sh -c 'test %u = $$(id -un 0)'
ExecStart=test %U = 0
ExecStart=sh -c 'test %h = $$(getent passwd 0 | cut -d: -f 6)'
ExecStart=sh -c 'test %u = $$(id -un)'
ExecStart=sh -c 'test %U = $$(id -u)'
ExecStart=sh -c 'test %g = $$(id -gn)'
ExecStart=sh -c 'test %G = $$(id -g)'
ExecStart=test %h = /root
ExecStart=sh -c 'test %s = /bin/sh'
ExecStart=sh -c 'test %m = $$(cat /etc/machine-id)'
ExecStart=sh -c 'test %b = $$(cat /proc/sys/kernel/random/boot_id | sed -e 's/-//g')'

4
test/test-execute/exec-supplementarygroups-multiple-groups-default-group-user.service
View File

@ -2,10 +2,10 @@
Description=Test for Supplementary Group with multiple groups without Group and User
[Service]
ExecStart=/bin/sh -x -c 'HAVE=0; for g in $$(id -G); do test "$$g" = "0" && HAVE=1; done; test "$$HAVE" -eq 1'
ExecStart=/bin/sh -x -c 'HAVE=0; for g in $$(id -G); do test "$$g" = "%G" && HAVE=1; done; test "$$HAVE" -eq 1'
ExecStart=/bin/sh -x -c 'HAVE=0; for g in $$(id -G); do test "$$g" = "1" && HAVE=1; done; test "$$HAVE" -eq 1'
ExecStart=/bin/sh -x -c 'HAVE=0; for g in $$(id -G); do test "$$g" = "2" && HAVE=1; done; test "$$HAVE" -eq 1'
ExecStart=/bin/sh -x -c 'HAVE=0; for g in $$(id -G); do test "$$g" = "3" && HAVE=1; done; test "$$HAVE" -eq 1'
ExecStart=/bin/sh -x -c 'test "$$(id -g)" = "0" && test "$$(id -u)" = "0"'
ExecStart=/bin/sh -x -c 'test "$$(id -g)" = "%G" && test "$$(id -u)" = "%U"'
Type=oneshot
SupplementaryGroups=1 2 3

2
test/test-execute/exec-supplementarygroups-multiple-groups-withgid.service
View File

@ -5,7 +5,7 @@ Description=Test for Supplementary Group with multiple groups and Group=1
ExecStart=/bin/sh -x -c 'HAVE=0; for g in $$(id -G); do test "$$g" = "1" && HAVE=1; done; test "$$HAVE" -eq 1'
ExecStart=/bin/sh -x -c 'HAVE=0; for g in $$(id -G); do test "$$g" = "2" && HAVE=1; done; test "$$HAVE" -eq 1'
ExecStart=/bin/sh -x -c 'HAVE=0; for g in $$(id -G); do test "$$g" = "3" && HAVE=1; done; test "$$HAVE" -eq 1'
ExecStart=/bin/sh -x -c 'test "$$(id -g)" = "1" && test "$$(id -u)" = "0"'
ExecStart=/bin/sh -x -c 'test "$$(id -g)" = "1" && test "$$(id -u)" = "%U"'
Type=oneshot
Group=1
SupplementaryGroups=1 2 3

2
test/test-execute/exec-supplementarygroups.service
View File

@ -2,7 +2,7 @@
Description=Test for Supplementary Group
[Service]
ExecStart=/bin/sh -x -c 'HAVE=0; for g in $$(id -G); do test "$$g" = "0" && HAVE=1; done; test "$$HAVE" -eq 1'
ExecStart=/bin/sh -x -c 'HAVE=0; for g in $$(id -G); do test "$$g" = "%G" && HAVE=1; done; test "$$HAVE" -eq 1'
ExecStart=/bin/sh -x -c 'HAVE=0; for g in $$(id -G); do test "$$g" = "1" && HAVE=1; done; test "$$HAVE" -eq 1'
Type=oneshot
SupplementaryGroups=1