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
, *root_image
;
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
;
164 BindMount
*bind_mounts
;
165 unsigned n_bind_mounts
;
167 uint64_t capability_bounding_set
;
168 uint64_t capability_ambient_set
;
172 char *syslog_identifier
;
173 bool syslog_level_prefix
;
175 bool cpu_sched_reset_on_fork
;
178 bool private_network
;
179 bool private_devices
;
181 ProtectSystem protect_system
;
182 ProtectHome protect_home
;
183 bool protect_kernel_tunables
;
184 bool protect_kernel_modules
;
185 bool protect_control_groups
;
188 bool no_new_privileges
;
193 /* This is not exposed to the user but available
194 * internally. We need it to make sure that whenever we spawn
195 * /usr/bin/mount it is run in the same process group as us so
196 * that the autofs logic detects that it belongs to us and we
197 * don't enter a trigger loop. */
200 unsigned long personality
;
202 unsigned long restrict_namespaces
; /* The CLONE_NEWxyz flags permitted to the unit's processes */
207 bool syscall_whitelist
:1;
209 Set
*address_families
;
210 bool address_families_whitelist
:1;
212 char **runtime_directory
;
213 mode_t runtime_directory_mode
;
215 bool memory_deny_write_execute
;
216 bool restrict_realtime
;
218 bool oom_score_adjust_set
:1;
221 bool cpu_sched_set
:1;
224 static inline bool exec_context_restrict_namespaces_set(const ExecContext
*c
) {
227 return (c
->restrict_namespaces
& NAMESPACE_FLAGS_ALL
) != NAMESPACE_FLAGS_ALL
;
230 typedef enum ExecFlags
{
231 EXEC_APPLY_PERMISSIONS
= 1U << 0,
232 EXEC_APPLY_CHROOT
= 1U << 1,
233 EXEC_APPLY_TTY_STDIN
= 1U << 2,
234 EXEC_NEW_KEYRING
= 1U << 3,
236 /* The following are not used by execute.c, but by consumers internally */
237 EXEC_PASS_FDS
= 1U << 4,
238 EXEC_IS_CONTROL
= 1U << 5,
239 EXEC_SETENV_RESULT
= 1U << 6,
240 EXEC_SET_WATCHDOG
= 1U << 7,
243 struct ExecParameters
{
252 bool selinux_context_net
:1;
254 bool cgroup_delegate
:1;
255 CGroupMask cgroup_supported
;
256 const char *cgroup_path
;
258 const char *runtime_prefix
;
260 const char *confirm_spawn
;
262 usec_t watchdog_usec
;
272 #include "dynamic-user.h"
274 int exec_spawn(Unit
*unit
,
275 ExecCommand
*command
,
276 const ExecContext
*context
,
277 const ExecParameters
*exec_params
,
278 ExecRuntime
*runtime
,
279 DynamicCreds
*dynamic_creds
,
282 void exec_command_done(ExecCommand
*c
);
283 void exec_command_done_array(ExecCommand
*c
, unsigned n
);
285 ExecCommand
* exec_command_free_list(ExecCommand
*c
);
286 void exec_command_free_array(ExecCommand
**c
, unsigned n
);
288 char *exec_command_line(char **argv
);
290 void exec_command_dump(ExecCommand
*c
, FILE *f
, const char *prefix
);
291 void exec_command_dump_list(ExecCommand
*c
, FILE *f
, const char *prefix
);
292 void exec_command_append_list(ExecCommand
**l
, ExecCommand
*e
);
293 int exec_command_set(ExecCommand
*c
, const char *path
, ...);
294 int exec_command_append(ExecCommand
*c
, const char *path
, ...);
296 void exec_context_init(ExecContext
*c
);
297 void exec_context_done(ExecContext
*c
);
298 void exec_context_dump(ExecContext
*c
, FILE* f
, const char *prefix
);
300 int exec_context_destroy_runtime_directory(ExecContext
*c
, const char *runtime_root
);
302 int exec_context_load_environment(Unit
*unit
, const ExecContext
*c
, char ***l
);
303 int exec_context_named_iofds(Unit
*unit
, const ExecContext
*c
, const ExecParameters
*p
, int named_iofds
[3]);
304 const char* exec_context_fdname(const ExecContext
*c
, int fd_index
);
306 bool exec_context_may_touch_console(ExecContext
*c
);
307 bool exec_context_maintains_privileges(ExecContext
*c
);
309 void exec_status_start(ExecStatus
*s
, pid_t pid
);
310 void exec_status_exit(ExecStatus
*s
, ExecContext
*context
, pid_t pid
, int code
, int status
);
311 void exec_status_dump(ExecStatus
*s
, FILE *f
, const char *prefix
);
313 int exec_runtime_make(ExecRuntime
**rt
, ExecContext
*c
, const char *id
);
314 ExecRuntime
*exec_runtime_ref(ExecRuntime
*r
);
315 ExecRuntime
*exec_runtime_unref(ExecRuntime
*r
);
317 int exec_runtime_serialize(Unit
*unit
, ExecRuntime
*rt
, FILE *f
, FDSet
*fds
);
318 int exec_runtime_deserialize_item(Unit
*unit
, ExecRuntime
**rt
, const char *key
, const char *value
, FDSet
*fds
);
320 void exec_runtime_destroy(ExecRuntime
*rt
);
322 const char* exec_output_to_string(ExecOutput i
) _const_
;
323 ExecOutput
exec_output_from_string(const char *s
) _pure_
;
325 const char* exec_input_to_string(ExecInput i
) _const_
;
326 ExecInput
exec_input_from_string(const char *s
) _pure_
;
328 const char* exec_utmp_mode_to_string(ExecUtmpMode i
) _const_
;
329 ExecUtmpMode
exec_utmp_mode_from_string(const char *s
) _pure_
;