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5cb5a6ff LP |
1 | /*-*- Mode: C; c-basic-offset: 8 -*-*/ |
2 | ||
3 | #ifndef fooexecutehfoo | |
4 | #define fooexecutehfoo | |
5 | ||
a7334b09 LP |
6 | /*** |
7 | This file is part of systemd. | |
8 | ||
9 | Copyright 2010 Lennart Poettering | |
10 | ||
11 | systemd is free software; you can redistribute it and/or modify it | |
12 | under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2 of the License, or | |
14 | (at your option) any later version. | |
15 | ||
16 | systemd is distributed in the hope that it will be useful, but | |
17 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
23 | ***/ | |
24 | ||
5cb5a6ff LP |
25 | typedef struct ExecStatus ExecStatus; |
26 | typedef struct ExecCommand ExecCommand; | |
27 | typedef struct ExecContext ExecContext; | |
28 | ||
29 | #include <sys/time.h> | |
30 | #include <sys/resource.h> | |
31 | #include <sys/capability.h> | |
32 | #include <stdbool.h> | |
33 | #include <stdio.h> | |
94f04347 | 34 | #include <sched.h> |
5cb5a6ff | 35 | |
8e274523 LP |
36 | struct CGroupBonding; |
37 | ||
5cb5a6ff | 38 | #include "list.h" |
034c6ed7 | 39 | #include "util.h" |
5cb5a6ff | 40 | |
071830ff | 41 | /* Abstract namespace! */ |
ebfaa158 | 42 | #define LOGGER_SOCKET "/org/freedesktop/systemd1/logger" |
071830ff | 43 | |
9a34ec5f | 44 | /* This doesn't really belong here, but I couldn't find a better place to put this. */ |
1b91d3e8 | 45 | #define SIGNALS_CRASH_HANDLER SIGSEGV,SIGILL,SIGFPE,SIGBUS,SIGQUIT,SIGABRT |
9a34ec5f LP |
46 | #define SIGNALS_IGNORE SIGKILL,SIGPIPE |
47 | ||
2e22afe9 LP |
48 | typedef enum KillMode { |
49 | KILL_CONTROL_GROUP = 0, | |
50 | KILL_PROCESS_GROUP, | |
51 | KILL_PROCESS, | |
52 | KILL_NONE, | |
53 | _KILL_MODE_MAX, | |
54 | _KILL_MODE_INVALID = -1 | |
55 | } KillMode; | |
56 | ||
80876c20 LP |
57 | typedef enum ExecInput { |
58 | EXEC_INPUT_NULL, | |
59 | EXEC_INPUT_TTY, | |
60 | EXEC_INPUT_TTY_FORCE, | |
61 | EXEC_INPUT_TTY_FAIL, | |
4f2d528d | 62 | EXEC_INPUT_SOCKET, |
80876c20 LP |
63 | _EXEC_INPUT_MAX, |
64 | _EXEC_INPUT_INVALID = -1 | |
65 | } ExecInput; | |
66 | ||
071830ff | 67 | typedef enum ExecOutput { |
80876c20 | 68 | EXEC_OUTPUT_INHERIT, |
94f04347 | 69 | EXEC_OUTPUT_NULL, |
80876c20 | 70 | EXEC_OUTPUT_TTY, |
94f04347 | 71 | EXEC_OUTPUT_SYSLOG, |
9a6bca7a | 72 | EXEC_OUTPUT_KMSG, |
4f2d528d | 73 | EXEC_OUTPUT_SOCKET, |
94f04347 LP |
74 | _EXEC_OUTPUT_MAX, |
75 | _EXEC_OUTPUT_INVALID = -1 | |
071830ff LP |
76 | } ExecOutput; |
77 | ||
5cb5a6ff | 78 | struct ExecStatus { |
63983207 LP |
79 | dual_timestamp start_timestamp; |
80 | dual_timestamp exit_timestamp; | |
9d58f1db | 81 | pid_t pid; |
9152c765 LP |
82 | int code; /* as in siginfo_t::si_code */ |
83 | int status; /* as in sigingo_t::si_status */ | |
5cb5a6ff LP |
84 | }; |
85 | ||
86 | struct ExecCommand { | |
87 | char *path; | |
88 | char **argv; | |
034c6ed7 LP |
89 | ExecStatus exec_status; |
90 | LIST_FIELDS(ExecCommand, command); /* useful for chaining commands */ | |
7fab9d01 | 91 | bool ignore; |
5cb5a6ff LP |
92 | }; |
93 | ||
94 | struct ExecContext { | |
95 | char **environment; | |
94f04347 | 96 | struct rlimit *rlimit[RLIMIT_NLIMITS]; |
9eba9da4 | 97 | char *working_directory, *root_directory; |
9d58f1db LP |
98 | |
99 | mode_t umask; | |
5cb5a6ff LP |
100 | int oom_adjust; |
101 | int nice; | |
9eba9da4 | 102 | int ioprio; |
94f04347 LP |
103 | int cpu_sched_policy; |
104 | int cpu_sched_priority; | |
9d58f1db | 105 | |
82c121a4 LP |
106 | cpu_set_t *cpuset; |
107 | unsigned cpuset_ncpus; | |
fb33a393 | 108 | |
80876c20 LP |
109 | ExecInput std_input; |
110 | ExecOutput std_output; | |
111 | ExecOutput std_error; | |
112 | ||
7fab9d01 | 113 | unsigned long timer_slack_nsec; |
071830ff | 114 | |
df1f0afe LP |
115 | char *tcpwrap_name; |
116 | ||
9d58f1db | 117 | char *tty_path; |
5cb5a6ff | 118 | |
94f04347 | 119 | /* Since resolving these names might might involve socket |
5cb5a6ff | 120 | * connections and we don't want to deadlock ourselves these |
94f04347 LP |
121 | * names are resolved on execution only and in the child |
122 | * process. */ | |
5cb5a6ff LP |
123 | char *user; |
124 | char *group; | |
125 | char **supplementary_groups; | |
9d58f1db | 126 | |
5b6319dc LP |
127 | char *pam_name; |
128 | ||
15ae422b LP |
129 | char **read_write_dirs, **read_only_dirs, **inaccessible_dirs; |
130 | unsigned long mount_flags; | |
131 | ||
9d58f1db LP |
132 | uint64_t capability_bounding_set_drop; |
133 | ||
7fab9d01 LP |
134 | /* Not relevant for spawning processes, just for killing */ |
135 | KillMode kill_mode; | |
136 | int kill_signal; | |
137 | ||
9d58f1db LP |
138 | cap_t capabilities; |
139 | int secure_bits; | |
140 | ||
7fab9d01 LP |
141 | int syslog_priority; |
142 | char *syslog_identifier; | |
143 | bool syslog_level_prefix; | |
144 | ||
9d58f1db LP |
145 | bool cpu_sched_reset_on_fork; |
146 | bool non_blocking; | |
15ae422b | 147 | bool private_tmp; |
9d58f1db | 148 | |
9d58f1db LP |
149 | /* This is not exposed to the user but available |
150 | * internally. We need it to make sure that whenever we spawn | |
151 | * /bin/mount it is run in the same process group as us so | |
152 | * that the autofs logic detects that it belongs to us and we | |
153 | * don't enter a trigger loop. */ | |
74922904 | 154 | bool same_pgrp; |
2e22afe9 | 155 | |
7fab9d01 LP |
156 | bool oom_adjust_set:1; |
157 | bool nice_set:1; | |
158 | bool ioprio_set:1; | |
159 | bool cpu_sched_set:1; | |
160 | bool timer_slack_nsec_set:1; | |
5cb5a6ff LP |
161 | }; |
162 | ||
034c6ed7 LP |
163 | typedef enum ExitStatus { |
164 | /* EXIT_SUCCESS defined by libc */ | |
165 | /* EXIT_FAILURE defined by libc */ | |
166 | EXIT_INVALIDARGUMENT = 2, | |
167 | EXIT_NOTIMPLEMENTED = 3, | |
168 | EXIT_NOPERMISSION = 4, | |
169 | EXIT_NOTINSTALLED = 5, | |
170 | EXIT_NOTCONFIGURED = 6, | |
171 | EXIT_NOTRUNNING = 7, | |
172 | ||
173 | /* The LSB suggests that error codes >= 200 are "reserved". We | |
174 | * use them here under the assumption that they hence are | |
175 | * unused by init scripts. | |
176 | * | |
177 | * http://refspecs.freestandards.org/LSB_3.1.0/LSB-Core-generic/LSB-Core-generic/iniscrptact.html */ | |
178 | ||
179 | EXIT_CHDIR = 200, | |
180 | EXIT_NICE, | |
181 | EXIT_FDS, | |
182 | EXIT_EXEC, | |
183 | EXIT_MEMORY, | |
184 | EXIT_LIMITS, | |
309bff19 | 185 | EXIT_OOM_ADJUST, |
071830ff | 186 | EXIT_SIGNAL_MASK, |
80876c20 LP |
187 | EXIT_STDIN, |
188 | EXIT_STDOUT, | |
81a2b7ce | 189 | EXIT_CHROOT, /* 210 */ |
94f04347 LP |
190 | EXIT_IOPRIO, |
191 | EXIT_TIMERSLACK, | |
192 | EXIT_SECUREBITS, | |
193 | EXIT_SETSCHEDULER, | |
81a2b7ce LP |
194 | EXIT_CPUAFFINITY, |
195 | EXIT_GROUP, | |
196 | EXIT_USER, | |
8e274523 | 197 | EXIT_CAPABILITIES, |
80876c20 LP |
198 | EXIT_CGROUP, |
199 | EXIT_SETSID, /* 220 */ | |
200 | EXIT_CONFIRM, | |
df1f0afe | 201 | EXIT_STDERR, |
5b6319dc LP |
202 | EXIT_TCPWRAP, |
203 | EXIT_PAM | |
80876c20 | 204 | |
034c6ed7 LP |
205 | } ExitStatus; |
206 | ||
9fb86720 | 207 | int exec_spawn(ExecCommand *command, |
9e2f7c11 | 208 | char **argv, |
81a2b7ce | 209 | const ExecContext *context, |
c2748801 | 210 | int fds[], unsigned n_fds, |
1137a57c | 211 | char **environment, |
81a2b7ce LP |
212 | bool apply_permissions, |
213 | bool apply_chroot, | |
1e3ad081 | 214 | bool apply_tty_stdin, |
80876c20 | 215 | bool confirm_spawn, |
8e274523 | 216 | struct CGroupBonding *cgroup_bondings, |
81a2b7ce | 217 | pid_t *ret); |
5cb5a6ff | 218 | |
43d0fcbd LP |
219 | void exec_command_done(ExecCommand *c); |
220 | void exec_command_done_array(ExecCommand *c, unsigned n); | |
221 | ||
5cb5a6ff | 222 | void exec_command_free_list(ExecCommand *c); |
034c6ed7 | 223 | void exec_command_free_array(ExecCommand **c, unsigned n); |
5cb5a6ff | 224 | |
9e2f7c11 LP |
225 | char *exec_command_line(char **argv); |
226 | ||
44d8db9e LP |
227 | void exec_command_dump(ExecCommand *c, FILE *f, const char *prefix); |
228 | void exec_command_dump_list(ExecCommand *c, FILE *f, const char *prefix); | |
a6a80b4f | 229 | void exec_command_append_list(ExecCommand **l, ExecCommand *e); |
26fd040d | 230 | int exec_command_set(ExecCommand *c, const char *path, ...); |
44d8db9e | 231 | |
034c6ed7 LP |
232 | void exec_context_init(ExecContext *c); |
233 | void exec_context_done(ExecContext *c); | |
5cb5a6ff LP |
234 | void exec_context_dump(ExecContext *c, FILE* f, const char *prefix); |
235 | ||
b58b4116 LP |
236 | void exec_status_start(ExecStatus *s, pid_t pid); |
237 | void exec_status_exit(ExecStatus *s, pid_t pid, int code, int status); | |
9fb86720 | 238 | void exec_status_dump(ExecStatus *s, FILE *f, const char *prefix); |
5cb5a6ff | 239 | |
94f04347 LP |
240 | const char* exec_output_to_string(ExecOutput i); |
241 | int exec_output_from_string(const char *s); | |
242 | ||
243 | const char* exec_input_to_string(ExecInput i); | |
244 | int exec_input_from_string(const char *s); | |
245 | ||
80876c20 LP |
246 | const char* exit_status_to_string(ExitStatus status); |
247 | ||
5cb5a6ff | 248 | #endif |