]>
Commit | Line | Data |
---|---|---|
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ | |
2 | ||
3 | #ifndef fooexecutehfoo | |
4 | #define fooexecutehfoo | |
5 | ||
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 Lesser General Public License as published by | |
13 | the Free Software Foundation; either version 2.1 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 | Lesser General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU Lesser General Public License | |
22 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
23 | ***/ | |
24 | ||
25 | typedef struct ExecStatus ExecStatus; | |
26 | typedef struct ExecCommand ExecCommand; | |
27 | typedef struct ExecContext ExecContext; | |
28 | ||
29 | #include <linux/types.h> | |
30 | #include <sys/time.h> | |
31 | #include <sys/resource.h> | |
32 | #include <sys/capability.h> | |
33 | #include <stdbool.h> | |
34 | #include <stdio.h> | |
35 | #include <sched.h> | |
36 | ||
37 | struct CGroupBonding; | |
38 | struct CGroupAttribute; | |
39 | ||
40 | #include "list.h" | |
41 | #include "util.h" | |
42 | ||
43 | typedef enum KillMode { | |
44 | KILL_CONTROL_GROUP = 0, | |
45 | KILL_PROCESS, | |
46 | KILL_NONE, | |
47 | _KILL_MODE_MAX, | |
48 | _KILL_MODE_INVALID = -1 | |
49 | } KillMode; | |
50 | ||
51 | typedef enum KillWho { | |
52 | KILL_MAIN, | |
53 | KILL_CONTROL, | |
54 | KILL_ALL, | |
55 | _KILL_WHO_MAX, | |
56 | _KILL_WHO_INVALID = -1 | |
57 | } KillWho; | |
58 | ||
59 | typedef enum ExecInput { | |
60 | EXEC_INPUT_NULL, | |
61 | EXEC_INPUT_TTY, | |
62 | EXEC_INPUT_TTY_FORCE, | |
63 | EXEC_INPUT_TTY_FAIL, | |
64 | EXEC_INPUT_SOCKET, | |
65 | _EXEC_INPUT_MAX, | |
66 | _EXEC_INPUT_INVALID = -1 | |
67 | } ExecInput; | |
68 | ||
69 | typedef enum ExecOutput { | |
70 | EXEC_OUTPUT_INHERIT, | |
71 | EXEC_OUTPUT_NULL, | |
72 | EXEC_OUTPUT_TTY, | |
73 | EXEC_OUTPUT_SYSLOG, | |
74 | EXEC_OUTPUT_SYSLOG_AND_CONSOLE, | |
75 | EXEC_OUTPUT_KMSG, | |
76 | EXEC_OUTPUT_KMSG_AND_CONSOLE, | |
77 | EXEC_OUTPUT_JOURNAL, | |
78 | EXEC_OUTPUT_JOURNAL_AND_CONSOLE, | |
79 | EXEC_OUTPUT_SOCKET, | |
80 | _EXEC_OUTPUT_MAX, | |
81 | _EXEC_OUTPUT_INVALID = -1 | |
82 | } ExecOutput; | |
83 | ||
84 | struct ExecStatus { | |
85 | dual_timestamp start_timestamp; | |
86 | dual_timestamp exit_timestamp; | |
87 | pid_t pid; | |
88 | int code; /* as in siginfo_t::si_code */ | |
89 | int status; /* as in sigingo_t::si_status */ | |
90 | }; | |
91 | ||
92 | struct ExecCommand { | |
93 | char *path; | |
94 | char **argv; | |
95 | ExecStatus exec_status; | |
96 | LIST_FIELDS(ExecCommand, command); /* useful for chaining commands */ | |
97 | bool ignore; | |
98 | }; | |
99 | ||
100 | struct ExecContext { | |
101 | char **environment; | |
102 | char **environment_files; | |
103 | ||
104 | struct rlimit *rlimit[RLIMIT_NLIMITS]; | |
105 | char *working_directory, *root_directory; | |
106 | ||
107 | mode_t umask; | |
108 | int oom_score_adjust; | |
109 | int nice; | |
110 | int ioprio; | |
111 | int cpu_sched_policy; | |
112 | int cpu_sched_priority; | |
113 | ||
114 | cpu_set_t *cpuset; | |
115 | unsigned cpuset_ncpus; | |
116 | ||
117 | ExecInput std_input; | |
118 | ExecOutput std_output; | |
119 | ExecOutput std_error; | |
120 | ||
121 | unsigned long timer_slack_nsec; | |
122 | ||
123 | char *tcpwrap_name; | |
124 | ||
125 | char *tty_path; | |
126 | ||
127 | bool tty_reset; | |
128 | bool tty_vhangup; | |
129 | bool tty_vt_disallocate; | |
130 | ||
131 | bool ignore_sigpipe; | |
132 | ||
133 | /* Since resolving these names might might involve socket | |
134 | * connections and we don't want to deadlock ourselves these | |
135 | * names are resolved on execution only and in the child | |
136 | * process. */ | |
137 | char *user; | |
138 | char *group; | |
139 | char **supplementary_groups; | |
140 | ||
141 | char *pam_name; | |
142 | ||
143 | char *utmp_id; | |
144 | ||
145 | char **read_write_dirs, **read_only_dirs, **inaccessible_dirs; | |
146 | unsigned long mount_flags; | |
147 | ||
148 | uint64_t capability_bounding_set_drop; | |
149 | ||
150 | /* Not relevant for spawning processes, just for killing */ | |
151 | KillMode kill_mode; | |
152 | int kill_signal; | |
153 | bool send_sigkill; | |
154 | ||
155 | cap_t capabilities; | |
156 | int secure_bits; | |
157 | ||
158 | int syslog_priority; | |
159 | char *syslog_identifier; | |
160 | bool syslog_level_prefix; | |
161 | ||
162 | bool cpu_sched_reset_on_fork; | |
163 | bool non_blocking; | |
164 | bool private_tmp; | |
165 | bool private_network; | |
166 | ||
167 | bool control_group_modify; | |
168 | int control_group_persistent; | |
169 | ||
170 | /* This is not exposed to the user but available | |
171 | * internally. We need it to make sure that whenever we spawn | |
172 | * /bin/mount it is run in the same process group as us so | |
173 | * that the autofs logic detects that it belongs to us and we | |
174 | * don't enter a trigger loop. */ | |
175 | bool same_pgrp; | |
176 | ||
177 | bool oom_score_adjust_set:1; | |
178 | bool nice_set:1; | |
179 | bool ioprio_set:1; | |
180 | bool cpu_sched_set:1; | |
181 | bool timer_slack_nsec_set:1; | |
182 | }; | |
183 | ||
184 | int exec_spawn(ExecCommand *command, | |
185 | char **argv, | |
186 | const ExecContext *context, | |
187 | int fds[], unsigned n_fds, | |
188 | char **environment, | |
189 | bool apply_permissions, | |
190 | bool apply_chroot, | |
191 | bool apply_tty_stdin, | |
192 | bool confirm_spawn, | |
193 | struct CGroupBonding *cgroup_bondings, | |
194 | struct CGroupAttribute *cgroup_attributes, | |
195 | pid_t *ret); | |
196 | ||
197 | void exec_command_done(ExecCommand *c); | |
198 | void exec_command_done_array(ExecCommand *c, unsigned n); | |
199 | ||
200 | void exec_command_free_list(ExecCommand *c); | |
201 | void exec_command_free_array(ExecCommand **c, unsigned n); | |
202 | ||
203 | char *exec_command_line(char **argv); | |
204 | ||
205 | void exec_command_dump(ExecCommand *c, FILE *f, const char *prefix); | |
206 | void exec_command_dump_list(ExecCommand *c, FILE *f, const char *prefix); | |
207 | void exec_command_append_list(ExecCommand **l, ExecCommand *e); | |
208 | int exec_command_set(ExecCommand *c, const char *path, ...); | |
209 | ||
210 | void exec_context_init(ExecContext *c); | |
211 | void exec_context_done(ExecContext *c); | |
212 | void exec_context_dump(ExecContext *c, FILE* f, const char *prefix); | |
213 | void exec_context_tty_reset(const ExecContext *context); | |
214 | ||
215 | int exec_context_load_environment(const ExecContext *c, char ***l); | |
216 | ||
217 | void exec_status_start(ExecStatus *s, pid_t pid); | |
218 | void exec_status_exit(ExecStatus *s, ExecContext *context, pid_t pid, int code, int status); | |
219 | void exec_status_dump(ExecStatus *s, FILE *f, const char *prefix); | |
220 | ||
221 | const char* exec_output_to_string(ExecOutput i); | |
222 | ExecOutput exec_output_from_string(const char *s); | |
223 | ||
224 | const char* exec_input_to_string(ExecInput i); | |
225 | ExecInput exec_input_from_string(const char *s); | |
226 | ||
227 | const char *kill_mode_to_string(KillMode k); | |
228 | KillMode kill_mode_from_string(const char *s); | |
229 | ||
230 | const char *kill_who_to_string(KillWho k); | |
231 | KillWho kill_who_from_string(const char *s); | |
232 | ||
233 | #endif |