292 lines
8.0 KiB
C
292 lines
8.0 KiB
C
#pragma once
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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typedef struct ExecStatus ExecStatus;
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typedef struct ExecCommand ExecCommand;
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typedef struct ExecContext ExecContext;
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typedef struct ExecRuntime ExecRuntime;
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typedef struct ExecParameters ExecParameters;
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#include <sched.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <sys/capability.h>
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#include "fdset.h"
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#include "list.h"
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#include "missing.h"
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#include "namespace.h"
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typedef enum ExecUtmpMode {
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EXEC_UTMP_INIT,
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EXEC_UTMP_LOGIN,
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EXEC_UTMP_USER,
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_EXEC_UTMP_MODE_MAX,
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_EXEC_UTMP_MODE_INVALID = -1
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} ExecUtmpMode;
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typedef enum ExecInput {
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EXEC_INPUT_NULL,
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EXEC_INPUT_TTY,
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EXEC_INPUT_TTY_FORCE,
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EXEC_INPUT_TTY_FAIL,
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EXEC_INPUT_SOCKET,
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_EXEC_INPUT_MAX,
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_EXEC_INPUT_INVALID = -1
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} ExecInput;
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typedef enum ExecOutput {
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EXEC_OUTPUT_INHERIT,
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EXEC_OUTPUT_NULL,
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EXEC_OUTPUT_TTY,
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EXEC_OUTPUT_SYSLOG,
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EXEC_OUTPUT_SYSLOG_AND_CONSOLE,
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EXEC_OUTPUT_KMSG,
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EXEC_OUTPUT_KMSG_AND_CONSOLE,
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EXEC_OUTPUT_JOURNAL,
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EXEC_OUTPUT_JOURNAL_AND_CONSOLE,
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EXEC_OUTPUT_SOCKET,
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_EXEC_OUTPUT_MAX,
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_EXEC_OUTPUT_INVALID = -1
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} ExecOutput;
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struct ExecStatus {
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dual_timestamp start_timestamp;
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dual_timestamp exit_timestamp;
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pid_t pid;
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int code; /* as in siginfo_t::si_code */
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int status; /* as in sigingo_t::si_status */
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};
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struct ExecCommand {
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char *path;
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char **argv;
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ExecStatus exec_status;
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LIST_FIELDS(ExecCommand, command); /* useful for chaining commands */
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bool ignore:1;
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bool privileged:1;
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};
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struct ExecRuntime {
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int n_ref;
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char *tmp_dir;
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char *var_tmp_dir;
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int netns_storage_socket[2];
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};
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struct ExecContext {
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char **environment;
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char **environment_files;
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char **pass_environment;
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struct rlimit *rlimit[_RLIMIT_MAX];
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char *working_directory, *root_directory;
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bool working_directory_missing_ok;
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bool working_directory_home;
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mode_t umask;
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int oom_score_adjust;
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int nice;
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int ioprio;
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int cpu_sched_policy;
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int cpu_sched_priority;
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cpu_set_t *cpuset;
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unsigned cpuset_ncpus;
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ExecInput std_input;
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ExecOutput std_output;
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ExecOutput std_error;
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nsec_t timer_slack_nsec;
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bool stdio_as_fds;
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char *tty_path;
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bool tty_reset;
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bool tty_vhangup;
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bool tty_vt_disallocate;
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bool ignore_sigpipe;
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/* Since resolving these names might involve socket
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* connections and we don't want to deadlock ourselves these
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* names are resolved on execution only and in the child
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* process. */
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char *user;
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char *group;
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char **supplementary_groups;
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char *pam_name;
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char *utmp_id;
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ExecUtmpMode utmp_mode;
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bool selinux_context_ignore;
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char *selinux_context;
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bool apparmor_profile_ignore;
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char *apparmor_profile;
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bool smack_process_label_ignore;
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char *smack_process_label;
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char **read_write_dirs, **read_only_dirs, **inaccessible_dirs;
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unsigned long mount_flags;
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uint64_t capability_bounding_set;
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uint64_t capability_ambient_set;
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int secure_bits;
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int syslog_priority;
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char *syslog_identifier;
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bool syslog_level_prefix;
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bool cpu_sched_reset_on_fork;
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bool non_blocking;
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bool private_tmp;
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bool private_network;
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bool private_devices;
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ProtectSystem protect_system;
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ProtectHome protect_home;
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bool no_new_privileges;
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/* This is not exposed to the user but available
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* internally. We need it to make sure that whenever we spawn
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* /usr/bin/mount it is run in the same process group as us so
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* that the autofs logic detects that it belongs to us and we
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* don't enter a trigger loop. */
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bool same_pgrp;
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unsigned long personality;
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Set *syscall_filter;
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Set *syscall_archs;
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int syscall_errno;
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bool syscall_whitelist:1;
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Set *address_families;
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bool address_families_whitelist:1;
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char **runtime_directory;
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mode_t runtime_directory_mode;
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bool memory_deny_write_execute;
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bool restrict_realtime;
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bool oom_score_adjust_set:1;
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bool nice_set:1;
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bool ioprio_set:1;
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bool cpu_sched_set:1;
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bool no_new_privileges_set:1;
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};
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#include "cgroup-util.h"
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#include "cgroup.h"
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struct ExecParameters {
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char **argv;
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char **environment;
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int *fds;
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char **fd_names;
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unsigned n_fds;
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bool apply_permissions:1;
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bool apply_chroot:1;
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bool apply_tty_stdin:1;
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bool confirm_spawn:1;
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bool selinux_context_net:1;
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bool cgroup_delegate:1;
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CGroupMask cgroup_supported;
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const char *cgroup_path;
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const char *runtime_prefix;
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usec_t watchdog_usec;
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int *idle_pipe;
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int stdin_fd;
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int stdout_fd;
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int stderr_fd;
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};
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int exec_spawn(Unit *unit,
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ExecCommand *command,
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const ExecContext *context,
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const ExecParameters *exec_params,
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ExecRuntime *runtime,
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pid_t *ret);
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void exec_command_done(ExecCommand *c);
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void exec_command_done_array(ExecCommand *c, unsigned n);
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ExecCommand* exec_command_free_list(ExecCommand *c);
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void exec_command_free_array(ExecCommand **c, unsigned n);
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char *exec_command_line(char **argv);
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void exec_command_dump(ExecCommand *c, FILE *f, const char *prefix);
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void exec_command_dump_list(ExecCommand *c, FILE *f, const char *prefix);
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void exec_command_append_list(ExecCommand **l, ExecCommand *e);
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int exec_command_set(ExecCommand *c, const char *path, ...);
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int exec_command_append(ExecCommand *c, const char *path, ...);
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void exec_context_init(ExecContext *c);
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void exec_context_done(ExecContext *c);
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void exec_context_dump(ExecContext *c, FILE* f, const char *prefix);
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int exec_context_destroy_runtime_directory(ExecContext *c, const char *runtime_root);
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int exec_context_load_environment(Unit *unit, const ExecContext *c, char ***l);
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bool exec_context_may_touch_console(ExecContext *c);
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bool exec_context_maintains_privileges(ExecContext *c);
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void exec_status_start(ExecStatus *s, pid_t pid);
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void exec_status_exit(ExecStatus *s, ExecContext *context, pid_t pid, int code, int status);
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void exec_status_dump(ExecStatus *s, FILE *f, const char *prefix);
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int exec_runtime_make(ExecRuntime **rt, ExecContext *c, const char *id);
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ExecRuntime *exec_runtime_ref(ExecRuntime *r);
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ExecRuntime *exec_runtime_unref(ExecRuntime *r);
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int exec_runtime_serialize(Unit *unit, ExecRuntime *rt, FILE *f, FDSet *fds);
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int exec_runtime_deserialize_item(Unit *unit, ExecRuntime **rt, const char *key, const char *value, FDSet *fds);
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void exec_runtime_destroy(ExecRuntime *rt);
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const char* exec_output_to_string(ExecOutput i) _const_;
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ExecOutput exec_output_from_string(const char *s) _pure_;
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const char* exec_input_to_string(ExecInput i) _const_;
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ExecInput exec_input_from_string(const char *s) _pure_;
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const char* exec_utmp_mode_to_string(ExecUtmpMode i) _const_;
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ExecUtmpMode exec_utmp_mode_from_string(const char *s) _pure_;
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