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authorLennart Poettering <lennart@poettering.net>2015-08-23 13:14:04 +0200
committerLennart Poettering <lennart@poettering.net>2015-08-24 22:46:45 +0200
commit023a4f67011f24d4b085995a4a3a02661c4794a2 (patch)
treec513fa8120c95cb04b19db69d56a4af8a1b8a129 /src/core
parent53496ca9adc383bd8aa28e8f75f1b21c2cc82b05 (diff)
core: optionally create LOGIN_PROCESS or USER_PROCESS utmp entries
When generating utmp/wtmp entries, optionally add both LOGIN_PROCESS and INIT_PROCESS entries or even all three of LOGIN_PROCESS, INIT_PROCESS and USER_PROCESS entries, instead of just a single INIT_PROCESS entry. With this change systemd may be used to not only invoke a getty directly in a SysV-compliant way but alternatively also a login(1) implementation or even forego getty and login entirely, and invoke arbitrary shells in a way that they appear in who(1) or w(1). This is preparation for a later commit that adds a "machinectl shell" operation to invoke a shell in a container, in a way that is compatible with who(1) and w(1).
Diffstat (limited to 'src/core')
-rw-r--r--src/core/dbus-execute.c3
-rw-r--r--src/core/execute.c15
-rw-r--r--src/core/execute.h12
-rw-r--r--src/core/load-fragment-gperf.gperf.m41
-rw-r--r--src/core/load-fragment.c2
-rw-r--r--src/core/load-fragment.h1
6 files changed, 33 insertions, 1 deletions
diff --git a/src/core/dbus-execute.c b/src/core/dbus-execute.c
index a9f7971cde..21d2b79678 100644
--- a/src/core/dbus-execute.c
+++ b/src/core/dbus-execute.c
@@ -46,6 +46,8 @@ BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_exec_output, exec_output, ExecOutp
static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_exec_input, exec_input, ExecInput);
+static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_exec_utmp_mode, exec_utmp_mode, ExecUtmpMode);
+
static BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_protect_home, protect_home, ProtectHome);
static BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_protect_system, protect_system, ProtectSystem);
@@ -653,6 +655,7 @@ const sd_bus_vtable bus_exec_vtable[] = {
SD_BUS_PROPERTY("ProtectSystem", "s", bus_property_get_protect_system, offsetof(ExecContext, protect_system), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("SameProcessGroup", "b", bus_property_get_bool, offsetof(ExecContext, same_pgrp), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("UtmpIdentifier", "s", NULL, offsetof(ExecContext, utmp_id), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("UtmpMode", "s", property_get_exec_utmp_mode, offsetof(ExecContext, utmp_mode), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("SELinuxContext", "(bs)", property_get_selinux_context, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("AppArmorProfile", "(bs)", property_get_apparmor_profile, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("SmackProcessLabel", "(bs)", property_get_smack_process_label, 0, SD_BUS_VTABLE_PROPERTY_CONST),
diff --git a/src/core/execute.c b/src/core/execute.c
index 3820165241..28eeeaad18 100644
--- a/src/core/execute.c
+++ b/src/core/execute.c
@@ -31,6 +31,7 @@
#include <grp.h>
#include <poll.h>
#include <glob.h>
+#include <utmpx.h>
#include <sys/personality.h>
#ifdef HAVE_PAM
@@ -1504,7 +1505,11 @@ static int exec_child(
}
if (context->utmp_id)
- utmp_put_init_process(context->utmp_id, getpid(), getsid(0), context->tty_path);
+ utmp_put_init_process(context->utmp_id, getpid(), getsid(0), context->tty_path,
+ context->utmp_mode == EXEC_UTMP_INIT ? INIT_PROCESS :
+ context->utmp_mode == EXEC_UTMP_LOGIN ? LOGIN_PROCESS :
+ USER_PROCESS,
+ username ? "root" : context->user);
if (context->user && is_terminal_input(context->std_input)) {
r = chown_terminal(STDIN_FILENO, uid);
@@ -2968,3 +2973,11 @@ static const char* const exec_output_table[_EXEC_OUTPUT_MAX] = {
};
DEFINE_STRING_TABLE_LOOKUP(exec_output, ExecOutput);
+
+static const char* const exec_utmp_mode_table[_EXEC_UTMP_MODE_MAX] = {
+ [EXEC_UTMP_INIT] = "init",
+ [EXEC_UTMP_LOGIN] = "login",
+ [EXEC_UTMP_USER] = "user",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(exec_utmp_mode, ExecUtmpMode);
diff --git a/src/core/execute.h b/src/core/execute.h
index f5d5c1dee7..5d46bf154c 100644
--- a/src/core/execute.h
+++ b/src/core/execute.h
@@ -38,6 +38,14 @@ typedef struct ExecParameters ExecParameters;
#include "namespace.h"
#include "bus-endpoint.h"
+typedef enum ExecUtmpMode {
+ EXEC_UTMP_INIT,
+ EXEC_UTMP_LOGIN,
+ EXEC_UTMP_USER,
+ _EXEC_UTMP_MODE_MAX,
+ _EXEC_UTMP_MODE_INVALID,
+} ExecUtmpMode;
+
typedef enum ExecInput {
EXEC_INPUT_NULL,
EXEC_INPUT_TTY,
@@ -131,6 +139,7 @@ struct ExecContext {
char *pam_name;
char *utmp_id;
+ ExecUtmpMode utmp_mode;
bool selinux_context_ignore;
char *selinux_context;
@@ -265,3 +274,6 @@ ExecOutput exec_output_from_string(const char *s) _pure_;
const char* exec_input_to_string(ExecInput i) _const_;
ExecInput exec_input_from_string(const char *s) _pure_;
+
+const char* exec_utmp_mode_to_string(ExecUtmpMode i) _const_;
+ExecUtmpMode exec_utmp_mode_from_string(const char *s) _pure_;
diff --git a/src/core/load-fragment-gperf.gperf.m4 b/src/core/load-fragment-gperf.gperf.m4
index aae81c80cb..60b97722db 100644
--- a/src/core/load-fragment-gperf.gperf.m4
+++ b/src/core/load-fragment-gperf.gperf.m4
@@ -91,6 +91,7 @@ m4_ifdef(`HAVE_PAM',
`$1.PAMName, config_parse_warn_compat, DISABLED_CONFIGURATION, 0')
$1.IgnoreSIGPIPE, config_parse_bool, 0, offsetof($1, exec_context.ignore_sigpipe)
$1.UtmpIdentifier, config_parse_unit_string_printf, 0, offsetof($1, exec_context.utmp_id)
+$1.UtmpMode, config_parse_exec_utmp_mode, 0, offsetof($1, exec_context.utmp_mode)
m4_ifdef(`HAVE_SELINUX',
`$1.SELinuxContext, config_parse_exec_selinux_context, 0, offsetof($1, exec_context)',
`$1.SELinuxContext, config_parse_warn_compat, DISABLED_CONFIGURATION, 0')
diff --git a/src/core/load-fragment.c b/src/core/load-fragment.c
index e1e3a5ffb7..b3bf8bdb40 100644
--- a/src/core/load-fragment.c
+++ b/src/core/load-fragment.c
@@ -1142,6 +1142,8 @@ int config_parse_sysv_priority(const char *unit,
}
#endif
+DEFINE_CONFIG_PARSE_ENUM(config_parse_exec_utmp_mode, exec_utmp_mode, ExecUtmpMode, "Failed to parse utmp mode");
+
DEFINE_CONFIG_PARSE_ENUM(config_parse_kill_mode, kill_mode, KillMode, "Failed to parse kill mode");
int config_parse_kill_signal(const char *unit,
diff --git a/src/core/load-fragment.h b/src/core/load-fragment.h
index ce10d03c3f..fcca2b0221 100644
--- a/src/core/load-fragment.h
+++ b/src/core/load-fragment.h
@@ -104,6 +104,7 @@ int config_parse_cpu_quota(const char *unit, const char *filename, unsigned line
int config_parse_protect_home(const char* unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
int config_parse_protect_system(const char* unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
int config_parse_bus_name(const char* unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_exec_utmp_mode(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
/* gperf prototypes */
const struct ConfigPerfItem* load_fragment_gperf_lookup(const char *key, unsigned length);