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03467c88 | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
5cb5a6ff | 2 | |
c2f1db8f | 3 | #pragma once |
5cb5a6ff | 4 | |
a7334b09 LP |
5 | /*** |
6 | This file is part of systemd. | |
7 | ||
8 | Copyright 2010 Lennart Poettering | |
9 | ||
10 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
11 | under the terms of the GNU Lesser General Public License as published by |
12 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
13 | (at your option) any later version. |
14 | ||
15 | systemd is distributed in the hope that it will be useful, but | |
16 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 18 | Lesser General Public License for more details. |
a7334b09 | 19 | |
5430f7f2 | 20 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
21 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
22 | ***/ | |
23 | ||
5cb5a6ff LP |
24 | typedef struct ExecStatus ExecStatus; |
25 | typedef struct ExecCommand ExecCommand; | |
26 | typedef struct ExecContext ExecContext; | |
613b411c | 27 | typedef struct ExecRuntime ExecRuntime; |
9fa95f85 | 28 | typedef struct ExecParameters ExecParameters; |
5cb5a6ff | 29 | |
5cb5a6ff LP |
30 | #include <sys/capability.h> |
31 | #include <stdbool.h> | |
32 | #include <stdio.h> | |
94f04347 | 33 | #include <sched.h> |
5cb5a6ff LP |
34 | |
35 | #include "list.h" | |
613b411c | 36 | #include "fdset.h" |
517d56b1 | 37 | #include "missing.h" |
417116f2 | 38 | #include "namespace.h" |
bb7dd0b0 | 39 | #include "bus-endpoint.h" |
5cb5a6ff | 40 | |
023a4f67 LP |
41 | typedef enum ExecUtmpMode { |
42 | EXEC_UTMP_INIT, | |
43 | EXEC_UTMP_LOGIN, | |
44 | EXEC_UTMP_USER, | |
45 | _EXEC_UTMP_MODE_MAX, | |
46 | _EXEC_UTMP_MODE_INVALID, | |
47 | } ExecUtmpMode; | |
48 | ||
80876c20 LP |
49 | typedef enum ExecInput { |
50 | EXEC_INPUT_NULL, | |
51 | EXEC_INPUT_TTY, | |
52 | EXEC_INPUT_TTY_FORCE, | |
53 | EXEC_INPUT_TTY_FAIL, | |
4f2d528d | 54 | EXEC_INPUT_SOCKET, |
80876c20 LP |
55 | _EXEC_INPUT_MAX, |
56 | _EXEC_INPUT_INVALID = -1 | |
57 | } ExecInput; | |
58 | ||
071830ff | 59 | typedef enum ExecOutput { |
80876c20 | 60 | EXEC_OUTPUT_INHERIT, |
94f04347 | 61 | EXEC_OUTPUT_NULL, |
80876c20 | 62 | EXEC_OUTPUT_TTY, |
94f04347 | 63 | EXEC_OUTPUT_SYSLOG, |
28dbc1e8 | 64 | EXEC_OUTPUT_SYSLOG_AND_CONSOLE, |
9a6bca7a | 65 | EXEC_OUTPUT_KMSG, |
28dbc1e8 | 66 | EXEC_OUTPUT_KMSG_AND_CONSOLE, |
706343f4 LP |
67 | EXEC_OUTPUT_JOURNAL, |
68 | EXEC_OUTPUT_JOURNAL_AND_CONSOLE, | |
4f2d528d | 69 | EXEC_OUTPUT_SOCKET, |
94f04347 LP |
70 | _EXEC_OUTPUT_MAX, |
71 | _EXEC_OUTPUT_INVALID = -1 | |
071830ff LP |
72 | } ExecOutput; |
73 | ||
5cb5a6ff | 74 | struct ExecStatus { |
63983207 LP |
75 | dual_timestamp start_timestamp; |
76 | dual_timestamp exit_timestamp; | |
9d58f1db | 77 | pid_t pid; |
9152c765 LP |
78 | int code; /* as in siginfo_t::si_code */ |
79 | int status; /* as in sigingo_t::si_status */ | |
5cb5a6ff LP |
80 | }; |
81 | ||
82 | struct ExecCommand { | |
83 | char *path; | |
84 | char **argv; | |
034c6ed7 LP |
85 | ExecStatus exec_status; |
86 | LIST_FIELDS(ExecCommand, command); /* useful for chaining commands */ | |
7fab9d01 | 87 | bool ignore; |
5cb5a6ff LP |
88 | }; |
89 | ||
613b411c LP |
90 | struct ExecRuntime { |
91 | int n_ref; | |
92 | ||
93 | char *tmp_dir; | |
94 | char *var_tmp_dir; | |
95 | ||
96 | int netns_storage_socket[2]; | |
97 | }; | |
98 | ||
5cb5a6ff LP |
99 | struct ExecContext { |
100 | char **environment; | |
8c7be95e LP |
101 | char **environment_files; |
102 | ||
517d56b1 | 103 | struct rlimit *rlimit[_RLIMIT_MAX]; |
9eba9da4 | 104 | char *working_directory, *root_directory; |
4c08c824 | 105 | bool working_directory_missing_ok; |
9d58f1db LP |
106 | |
107 | mode_t umask; | |
dd6c17b1 | 108 | int oom_score_adjust; |
5cb5a6ff | 109 | int nice; |
9eba9da4 | 110 | int ioprio; |
94f04347 LP |
111 | int cpu_sched_policy; |
112 | int cpu_sched_priority; | |
9d58f1db | 113 | |
82c121a4 LP |
114 | cpu_set_t *cpuset; |
115 | unsigned cpuset_ncpus; | |
fb33a393 | 116 | |
80876c20 LP |
117 | ExecInput std_input; |
118 | ExecOutput std_output; | |
119 | ExecOutput std_error; | |
120 | ||
d88a251b | 121 | nsec_t timer_slack_nsec; |
071830ff | 122 | |
9d58f1db | 123 | char *tty_path; |
5cb5a6ff | 124 | |
6ea832a2 LP |
125 | bool tty_reset; |
126 | bool tty_vhangup; | |
127 | bool tty_vt_disallocate; | |
128 | ||
353e12c2 LP |
129 | bool ignore_sigpipe; |
130 | ||
94f04347 | 131 | /* Since resolving these names might might involve socket |
5cb5a6ff | 132 | * connections and we don't want to deadlock ourselves these |
94f04347 LP |
133 | * names are resolved on execution only and in the child |
134 | * process. */ | |
5cb5a6ff LP |
135 | char *user; |
136 | char *group; | |
137 | char **supplementary_groups; | |
9d58f1db | 138 | |
5b6319dc LP |
139 | char *pam_name; |
140 | ||
169c1bda | 141 | char *utmp_id; |
023a4f67 | 142 | ExecUtmpMode utmp_mode; |
169c1bda | 143 | |
5f8640fb | 144 | bool selinux_context_ignore; |
7b52a628 MS |
145 | char *selinux_context; |
146 | ||
eef65bf3 MS |
147 | bool apparmor_profile_ignore; |
148 | char *apparmor_profile; | |
149 | ||
2ca620c4 WC |
150 | bool smack_process_label_ignore; |
151 | char *smack_process_label; | |
152 | ||
15ae422b LP |
153 | char **read_write_dirs, **read_only_dirs, **inaccessible_dirs; |
154 | unsigned long mount_flags; | |
155 | ||
9d58f1db LP |
156 | uint64_t capability_bounding_set_drop; |
157 | ||
158 | cap_t capabilities; | |
159 | int secure_bits; | |
160 | ||
7fab9d01 LP |
161 | int syslog_priority; |
162 | char *syslog_identifier; | |
163 | bool syslog_level_prefix; | |
164 | ||
9d58f1db LP |
165 | bool cpu_sched_reset_on_fork; |
166 | bool non_blocking; | |
15ae422b | 167 | bool private_tmp; |
ff01d048 | 168 | bool private_network; |
7f112f50 | 169 | bool private_devices; |
1b8689f9 LP |
170 | ProtectSystem protect_system; |
171 | ProtectHome protect_home; | |
9d58f1db | 172 | |
8351ceae LP |
173 | bool no_new_privileges; |
174 | ||
9d58f1db LP |
175 | /* This is not exposed to the user but available |
176 | * internally. We need it to make sure that whenever we spawn | |
f00929ad | 177 | * /usr/bin/mount it is run in the same process group as us so |
9d58f1db LP |
178 | * that the autofs logic detects that it belongs to us and we |
179 | * don't enter a trigger loop. */ | |
74922904 | 180 | bool same_pgrp; |
2e22afe9 | 181 | |
ac45f971 LP |
182 | unsigned long personality; |
183 | ||
17df7223 | 184 | Set *syscall_filter; |
57183d11 | 185 | Set *syscall_archs; |
17df7223 LP |
186 | int syscall_errno; |
187 | bool syscall_whitelist:1; | |
8351ceae | 188 | |
4298d0b5 LP |
189 | Set *address_families; |
190 | bool address_families_whitelist:1; | |
191 | ||
e66cf1a3 LP |
192 | char **runtime_directory; |
193 | mode_t runtime_directory_mode; | |
194 | ||
dd6c17b1 | 195 | bool oom_score_adjust_set:1; |
7fab9d01 LP |
196 | bool nice_set:1; |
197 | bool ioprio_set:1; | |
198 | bool cpu_sched_set:1; | |
760b9d7c | 199 | bool no_new_privileges_set:1; |
bb7dd0b0 DM |
200 | |
201 | /* custom dbus enpoint */ | |
202 | BusEndpoint *bus_endpoint; | |
5cb5a6ff LP |
203 | }; |
204 | ||
4ad49000 | 205 | #include "cgroup.h" |
c1ff5570 | 206 | #include "cgroup-util.h" |
4ad49000 | 207 | |
9fa95f85 DM |
208 | struct ExecParameters { |
209 | char **argv; | |
210 | int *fds; unsigned n_fds; | |
211 | char **environment; | |
212 | bool apply_permissions; | |
213 | bool apply_chroot; | |
214 | bool apply_tty_stdin; | |
215 | bool confirm_spawn; | |
16115b0a | 216 | bool selinux_context_net; |
9fa95f85 DM |
217 | CGroupControllerMask cgroup_supported; |
218 | const char *cgroup_path; | |
a931ad47 | 219 | bool cgroup_delegate; |
9fa95f85 | 220 | const char *runtime_prefix; |
9fa95f85 DM |
221 | usec_t watchdog_usec; |
222 | int *idle_pipe; | |
e44da745 DM |
223 | char *bus_endpoint_path; |
224 | int bus_endpoint_fd; | |
9fa95f85 DM |
225 | }; |
226 | ||
f2341e0a LP |
227 | int exec_spawn(Unit *unit, |
228 | ExecCommand *command, | |
9fa95f85 DM |
229 | const ExecContext *context, |
230 | const ExecParameters *exec_params, | |
613b411c | 231 | ExecRuntime *runtime, |
81a2b7ce | 232 | pid_t *ret); |
5cb5a6ff | 233 | |
43d0fcbd LP |
234 | void exec_command_done(ExecCommand *c); |
235 | void exec_command_done_array(ExecCommand *c, unsigned n); | |
236 | ||
f1acf85a | 237 | ExecCommand* exec_command_free_list(ExecCommand *c); |
034c6ed7 | 238 | void exec_command_free_array(ExecCommand **c, unsigned n); |
5cb5a6ff | 239 | |
9e2f7c11 LP |
240 | char *exec_command_line(char **argv); |
241 | ||
44d8db9e LP |
242 | void exec_command_dump(ExecCommand *c, FILE *f, const char *prefix); |
243 | void exec_command_dump_list(ExecCommand *c, FILE *f, const char *prefix); | |
a6a80b4f | 244 | void exec_command_append_list(ExecCommand **l, ExecCommand *e); |
26fd040d | 245 | int exec_command_set(ExecCommand *c, const char *path, ...); |
86b23b07 | 246 | int exec_command_append(ExecCommand *c, const char *path, ...); |
44d8db9e | 247 | |
034c6ed7 | 248 | void exec_context_init(ExecContext *c); |
613b411c | 249 | void exec_context_done(ExecContext *c); |
5cb5a6ff LP |
250 | void exec_context_dump(ExecContext *c, FILE* f, const char *prefix); |
251 | ||
e66cf1a3 LP |
252 | int exec_context_destroy_runtime_directory(ExecContext *c, const char *runtime_root); |
253 | ||
f2341e0a | 254 | int exec_context_load_environment(Unit *unit, const ExecContext *c, char ***l); |
8c7be95e | 255 | |
6ac8fdc9 | 256 | bool exec_context_may_touch_console(ExecContext *c); |
a931ad47 | 257 | bool exec_context_maintains_privileges(ExecContext *c); |
6ac8fdc9 | 258 | |
b58b4116 | 259 | void exec_status_start(ExecStatus *s, pid_t pid); |
6ea832a2 | 260 | void exec_status_exit(ExecStatus *s, ExecContext *context, pid_t pid, int code, int status); |
9fb86720 | 261 | void exec_status_dump(ExecStatus *s, FILE *f, const char *prefix); |
5cb5a6ff | 262 | |
613b411c LP |
263 | int exec_runtime_make(ExecRuntime **rt, ExecContext *c, const char *id); |
264 | ExecRuntime *exec_runtime_ref(ExecRuntime *r); | |
265 | ExecRuntime *exec_runtime_unref(ExecRuntime *r); | |
266 | ||
f2341e0a LP |
267 | int exec_runtime_serialize(Unit *unit, ExecRuntime *rt, FILE *f, FDSet *fds); |
268 | int exec_runtime_deserialize_item(Unit *unit, ExecRuntime **rt, const char *key, const char *value, FDSet *fds); | |
613b411c LP |
269 | |
270 | void exec_runtime_destroy(ExecRuntime *rt); | |
271 | ||
44a6b1b6 ZJS |
272 | const char* exec_output_to_string(ExecOutput i) _const_; |
273 | ExecOutput exec_output_from_string(const char *s) _pure_; | |
94f04347 | 274 | |
44a6b1b6 ZJS |
275 | const char* exec_input_to_string(ExecInput i) _const_; |
276 | ExecInput exec_input_from_string(const char *s) _pure_; | |
023a4f67 LP |
277 | |
278 | const char* exec_utmp_mode_to_string(ExecUtmpMode i) _const_; | |
279 | ExecUtmpMode exec_utmp_mode_from_string(const char *s) _pure_; |