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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 | |
80876c20 LP |
44 | typedef enum ExecInput { |
45 | EXEC_INPUT_NULL, | |
46 | EXEC_INPUT_TTY, | |
47 | EXEC_INPUT_TTY_FORCE, | |
48 | EXEC_INPUT_TTY_FAIL, | |
4f2d528d | 49 | EXEC_INPUT_SOCKET, |
80876c20 LP |
50 | _EXEC_INPUT_MAX, |
51 | _EXEC_INPUT_INVALID = -1 | |
52 | } ExecInput; | |
53 | ||
071830ff | 54 | typedef enum ExecOutput { |
80876c20 | 55 | EXEC_OUTPUT_INHERIT, |
94f04347 | 56 | EXEC_OUTPUT_NULL, |
80876c20 | 57 | EXEC_OUTPUT_TTY, |
94f04347 LP |
58 | EXEC_OUTPUT_SYSLOG, |
59 | EXEC_OUTPUT_KERNEL, | |
4f2d528d | 60 | EXEC_OUTPUT_SOCKET, |
94f04347 LP |
61 | _EXEC_OUTPUT_MAX, |
62 | _EXEC_OUTPUT_INVALID = -1 | |
071830ff LP |
63 | } ExecOutput; |
64 | ||
5cb5a6ff | 65 | struct ExecStatus { |
9fb86720 LP |
66 | usec_t start_timestamp; |
67 | usec_t exit_timestamp; | |
9d58f1db | 68 | pid_t pid; |
9152c765 LP |
69 | int code; /* as in siginfo_t::si_code */ |
70 | int status; /* as in sigingo_t::si_status */ | |
5cb5a6ff LP |
71 | }; |
72 | ||
73 | struct ExecCommand { | |
74 | char *path; | |
75 | char **argv; | |
034c6ed7 LP |
76 | ExecStatus exec_status; |
77 | LIST_FIELDS(ExecCommand, command); /* useful for chaining commands */ | |
5cb5a6ff LP |
78 | }; |
79 | ||
80 | struct ExecContext { | |
81 | char **environment; | |
94f04347 | 82 | struct rlimit *rlimit[RLIMIT_NLIMITS]; |
9eba9da4 | 83 | char *working_directory, *root_directory; |
9d58f1db LP |
84 | |
85 | mode_t umask; | |
5cb5a6ff LP |
86 | int oom_adjust; |
87 | int nice; | |
9eba9da4 | 88 | int ioprio; |
94f04347 LP |
89 | int cpu_sched_policy; |
90 | int cpu_sched_priority; | |
9d58f1db | 91 | |
94f04347 LP |
92 | cpu_set_t cpu_affinity; |
93 | unsigned long timer_slack_ns; | |
fb33a393 | 94 | |
80876c20 LP |
95 | ExecInput std_input; |
96 | ExecOutput std_output; | |
97 | ExecOutput std_error; | |
98 | ||
071830ff LP |
99 | int syslog_priority; |
100 | char *syslog_identifier; | |
101 | ||
9d58f1db | 102 | char *tty_path; |
5cb5a6ff | 103 | |
94f04347 | 104 | /* Since resolving these names might might involve socket |
5cb5a6ff | 105 | * connections and we don't want to deadlock ourselves these |
94f04347 LP |
106 | * names are resolved on execution only and in the child |
107 | * process. */ | |
5cb5a6ff LP |
108 | char *user; |
109 | char *group; | |
110 | char **supplementary_groups; | |
9d58f1db | 111 | |
15ae422b LP |
112 | char **read_write_dirs, **read_only_dirs, **inaccessible_dirs; |
113 | unsigned long mount_flags; | |
114 | ||
9d58f1db LP |
115 | uint64_t capability_bounding_set_drop; |
116 | ||
117 | cap_t capabilities; | |
118 | int secure_bits; | |
119 | ||
120 | bool cpu_sched_reset_on_fork; | |
121 | bool non_blocking; | |
15ae422b | 122 | bool private_tmp; |
9d58f1db LP |
123 | |
124 | bool oom_adjust_set:1; | |
125 | bool nice_set:1; | |
126 | bool ioprio_set:1; | |
127 | bool cpu_sched_set:1; | |
128 | bool cpu_affinity_set:1; | |
129 | bool timer_slack_ns_set:1; | |
130 | ||
131 | /* This is not exposed to the user but available | |
132 | * internally. We need it to make sure that whenever we spawn | |
133 | * /bin/mount it is run in the same process group as us so | |
134 | * that the autofs logic detects that it belongs to us and we | |
135 | * don't enter a trigger loop. */ | |
136 | bool no_setsid:1; | |
5cb5a6ff LP |
137 | }; |
138 | ||
034c6ed7 LP |
139 | typedef enum ExitStatus { |
140 | /* EXIT_SUCCESS defined by libc */ | |
141 | /* EXIT_FAILURE defined by libc */ | |
142 | EXIT_INVALIDARGUMENT = 2, | |
143 | EXIT_NOTIMPLEMENTED = 3, | |
144 | EXIT_NOPERMISSION = 4, | |
145 | EXIT_NOTINSTALLED = 5, | |
146 | EXIT_NOTCONFIGURED = 6, | |
147 | EXIT_NOTRUNNING = 7, | |
148 | ||
149 | /* The LSB suggests that error codes >= 200 are "reserved". We | |
150 | * use them here under the assumption that they hence are | |
151 | * unused by init scripts. | |
152 | * | |
153 | * http://refspecs.freestandards.org/LSB_3.1.0/LSB-Core-generic/LSB-Core-generic/iniscrptact.html */ | |
154 | ||
155 | EXIT_CHDIR = 200, | |
156 | EXIT_NICE, | |
157 | EXIT_FDS, | |
158 | EXIT_EXEC, | |
159 | EXIT_MEMORY, | |
160 | EXIT_LIMITS, | |
309bff19 | 161 | EXIT_OOM_ADJUST, |
071830ff | 162 | EXIT_SIGNAL_MASK, |
80876c20 LP |
163 | EXIT_STDIN, |
164 | EXIT_STDOUT, | |
81a2b7ce | 165 | EXIT_CHROOT, /* 210 */ |
94f04347 LP |
166 | EXIT_IOPRIO, |
167 | EXIT_TIMERSLACK, | |
168 | EXIT_SECUREBITS, | |
169 | EXIT_SETSCHEDULER, | |
81a2b7ce LP |
170 | EXIT_CPUAFFINITY, |
171 | EXIT_GROUP, | |
172 | EXIT_USER, | |
8e274523 | 173 | EXIT_CAPABILITIES, |
80876c20 LP |
174 | EXIT_CGROUP, |
175 | EXIT_SETSID, /* 220 */ | |
176 | EXIT_CONFIRM, | |
177 | EXIT_STDERR | |
178 | ||
034c6ed7 LP |
179 | } ExitStatus; |
180 | ||
9fb86720 | 181 | int exec_spawn(ExecCommand *command, |
9e2f7c11 | 182 | char **argv, |
81a2b7ce | 183 | const ExecContext *context, |
c2748801 | 184 | int fds[], unsigned n_fds, |
81a2b7ce LP |
185 | bool apply_permissions, |
186 | bool apply_chroot, | |
80876c20 | 187 | bool confirm_spawn, |
8e274523 | 188 | struct CGroupBonding *cgroup_bondings, |
81a2b7ce | 189 | pid_t *ret); |
5cb5a6ff | 190 | |
43d0fcbd LP |
191 | void exec_command_done(ExecCommand *c); |
192 | void exec_command_done_array(ExecCommand *c, unsigned n); | |
193 | ||
5cb5a6ff | 194 | void exec_command_free_list(ExecCommand *c); |
034c6ed7 | 195 | void exec_command_free_array(ExecCommand **c, unsigned n); |
5cb5a6ff | 196 | |
9e2f7c11 LP |
197 | char *exec_command_line(char **argv); |
198 | ||
44d8db9e LP |
199 | void exec_command_dump(ExecCommand *c, FILE *f, const char *prefix); |
200 | void exec_command_dump_list(ExecCommand *c, FILE *f, const char *prefix); | |
a6a80b4f | 201 | void exec_command_append_list(ExecCommand **l, ExecCommand *e); |
26fd040d | 202 | int exec_command_set(ExecCommand *c, const char *path, ...); |
44d8db9e | 203 | |
034c6ed7 LP |
204 | void exec_context_init(ExecContext *c); |
205 | void exec_context_done(ExecContext *c); | |
5cb5a6ff LP |
206 | void exec_context_dump(ExecContext *c, FILE* f, const char *prefix); |
207 | ||
034c6ed7 | 208 | void exec_status_fill(ExecStatus *s, pid_t pid, int code, int status); |
9fb86720 | 209 | void exec_status_dump(ExecStatus *s, FILE *f, const char *prefix); |
5cb5a6ff | 210 | |
94f04347 LP |
211 | const char* exec_output_to_string(ExecOutput i); |
212 | int exec_output_from_string(const char *s); | |
213 | ||
214 | const char* exec_input_to_string(ExecInput i); | |
215 | int exec_input_from_string(const char *s); | |
216 | ||
80876c20 LP |
217 | const char* exit_status_to_string(ExitStatus status); |
218 | ||
5cb5a6ff | 219 | #endif |