4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
22 typedef struct ExecStatus ExecStatus
;
23 typedef struct ExecCommand ExecCommand
;
24 typedef struct ExecContext ExecContext
;
25 typedef struct ExecRuntime ExecRuntime
;
26 typedef struct ExecParameters ExecParameters
;
31 #include <sys/capability.h>
33 #include "cgroup-util.h"
37 #include "namespace.h"
40 typedef enum ExecUtmpMode
{
45 _EXEC_UTMP_MODE_INVALID
= -1
48 typedef enum ExecInput
{
56 _EXEC_INPUT_INVALID
= -1
59 typedef enum ExecOutput
{
64 EXEC_OUTPUT_SYSLOG_AND_CONSOLE
,
66 EXEC_OUTPUT_KMSG_AND_CONSOLE
,
68 EXEC_OUTPUT_JOURNAL_AND_CONSOLE
,
72 _EXEC_OUTPUT_INVALID
= -1
76 dual_timestamp start_timestamp
;
77 dual_timestamp exit_timestamp
;
79 int code
; /* as in siginfo_t::si_code */
80 int status
; /* as in sigingo_t::si_status */
86 ExecStatus exec_status
;
87 LIST_FIELDS(ExecCommand
, command
); /* useful for chaining commands */
98 /* An AF_UNIX socket pair, that contains a datagram containing a file descriptor referring to the network
100 int netns_storage_socket
[2];
105 char **environment_files
;
106 char **pass_environment
;
108 struct rlimit
*rlimit
[_RLIMIT_MAX
];
109 char *working_directory
, *root_directory
;
110 bool working_directory_missing_ok
;
111 bool working_directory_home
;
114 int oom_score_adjust
;
117 int cpu_sched_policy
;
118 int cpu_sched_priority
;
121 unsigned cpuset_ncpus
;
124 ExecOutput std_output
;
125 ExecOutput std_error
;
126 char *stdio_fdname
[3];
128 nsec_t timer_slack_nsec
;
136 bool tty_vt_disallocate
;
140 /* Since resolving these names might involve socket
141 * connections and we don't want to deadlock ourselves these
142 * names are resolved on execution only and in the child
146 char **supplementary_groups
;
151 ExecUtmpMode utmp_mode
;
153 bool selinux_context_ignore
;
154 char *selinux_context
;
156 bool apparmor_profile_ignore
;
157 char *apparmor_profile
;
159 bool smack_process_label_ignore
;
160 char *smack_process_label
;
162 char **read_write_paths
, **read_only_paths
, **inaccessible_paths
;
163 unsigned long mount_flags
;
165 uint64_t capability_bounding_set
;
166 uint64_t capability_ambient_set
;
170 char *syslog_identifier
;
171 bool syslog_level_prefix
;
173 bool cpu_sched_reset_on_fork
;
176 bool private_network
;
177 bool private_devices
;
179 ProtectSystem protect_system
;
180 ProtectHome protect_home
;
181 bool protect_kernel_tunables
;
182 bool protect_kernel_modules
;
183 bool protect_control_groups
;
185 bool no_new_privileges
;
190 /* This is not exposed to the user but available
191 * internally. We need it to make sure that whenever we spawn
192 * /usr/bin/mount it is run in the same process group as us so
193 * that the autofs logic detects that it belongs to us and we
194 * don't enter a trigger loop. */
197 unsigned long personality
;
199 unsigned long restrict_namespaces
; /* The CLONE_NEWxyz flags permitted to the unit's processes */
204 bool syscall_whitelist
:1;
206 Set
*address_families
;
207 bool address_families_whitelist
:1;
209 char **runtime_directory
;
210 mode_t runtime_directory_mode
;
212 bool memory_deny_write_execute
;
213 bool restrict_realtime
;
215 bool oom_score_adjust_set
:1;
218 bool cpu_sched_set
:1;
219 bool no_new_privileges_set
:1;
222 static inline bool exec_context_restrict_namespaces_set(const ExecContext
*c
) {
225 return (c
->restrict_namespaces
& NAMESPACE_FLAGS_ALL
) != NAMESPACE_FLAGS_ALL
;
228 typedef enum ExecFlags
{
229 EXEC_CONFIRM_SPAWN
= 1U << 0,
230 EXEC_APPLY_PERMISSIONS
= 1U << 1,
231 EXEC_APPLY_CHROOT
= 1U << 2,
232 EXEC_APPLY_TTY_STDIN
= 1U << 3,
234 /* The following are not used by execute.c, but by consumers internally */
235 EXEC_PASS_FDS
= 1U << 4,
236 EXEC_IS_CONTROL
= 1U << 5,
237 EXEC_SETENV_RESULT
= 1U << 6,
238 EXEC_SET_WATCHDOG
= 1U << 7,
241 struct ExecParameters
{
250 bool selinux_context_net
:1;
252 bool cgroup_delegate
:1;
253 CGroupMask cgroup_supported
;
254 const char *cgroup_path
;
256 const char *runtime_prefix
;
258 usec_t watchdog_usec
;
268 #include "dynamic-user.h"
270 int exec_spawn(Unit
*unit
,
271 ExecCommand
*command
,
272 const ExecContext
*context
,
273 const ExecParameters
*exec_params
,
274 ExecRuntime
*runtime
,
275 DynamicCreds
*dynamic_creds
,
278 void exec_command_done(ExecCommand
*c
);
279 void exec_command_done_array(ExecCommand
*c
, unsigned n
);
281 ExecCommand
* exec_command_free_list(ExecCommand
*c
);
282 void exec_command_free_array(ExecCommand
**c
, unsigned n
);
284 char *exec_command_line(char **argv
);
286 void exec_command_dump(ExecCommand
*c
, FILE *f
, const char *prefix
);
287 void exec_command_dump_list(ExecCommand
*c
, FILE *f
, const char *prefix
);
288 void exec_command_append_list(ExecCommand
**l
, ExecCommand
*e
);
289 int exec_command_set(ExecCommand
*c
, const char *path
, ...);
290 int exec_command_append(ExecCommand
*c
, const char *path
, ...);
292 void exec_context_init(ExecContext
*c
);
293 void exec_context_done(ExecContext
*c
);
294 void exec_context_dump(ExecContext
*c
, FILE* f
, const char *prefix
);
296 int exec_context_destroy_runtime_directory(ExecContext
*c
, const char *runtime_root
);
298 int exec_context_load_environment(Unit
*unit
, const ExecContext
*c
, char ***l
);
299 int exec_context_named_iofds(Unit
*unit
, const ExecContext
*c
, const ExecParameters
*p
, int named_iofds
[3]);
300 const char* exec_context_fdname(const ExecContext
*c
, int fd_index
);
302 bool exec_context_may_touch_console(ExecContext
*c
);
303 bool exec_context_maintains_privileges(ExecContext
*c
);
305 void exec_status_start(ExecStatus
*s
, pid_t pid
);
306 void exec_status_exit(ExecStatus
*s
, ExecContext
*context
, pid_t pid
, int code
, int status
);
307 void exec_status_dump(ExecStatus
*s
, FILE *f
, const char *prefix
);
309 int exec_runtime_make(ExecRuntime
**rt
, ExecContext
*c
, const char *id
);
310 ExecRuntime
*exec_runtime_ref(ExecRuntime
*r
);
311 ExecRuntime
*exec_runtime_unref(ExecRuntime
*r
);
313 int exec_runtime_serialize(Unit
*unit
, ExecRuntime
*rt
, FILE *f
, FDSet
*fds
);
314 int exec_runtime_deserialize_item(Unit
*unit
, ExecRuntime
**rt
, const char *key
, const char *value
, FDSet
*fds
);
316 void exec_runtime_destroy(ExecRuntime
*rt
);
318 const char* exec_output_to_string(ExecOutput i
) _const_
;
319 ExecOutput
exec_output_from_string(const char *s
) _pure_
;
321 const char* exec_input_to_string(ExecInput i
) _const_
;
322 ExecInput
exec_input_from_string(const char *s
) _pure_
;
324 const char* exec_utmp_mode_to_string(ExecUtmpMode i
) _const_
;
325 ExecUtmpMode
exec_utmp_mode_from_string(const char *s
) _pure_
;