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src/core/execute.h
684 строки
26 KB
Luca Boccassi
core: add FileDescriptorStorePreserve=on-success option
21 май 2026, 12:14
21 май 2026, 12:14
67dea14
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/* SPDX-License-Identifier: LGPL-2.1-or-later */ #pragma once #include <sys/uio.h> #include "sd-id128.h" #include "bus-unit-util.h" #include "core-forward.h" #include "cpu-set-util.h" #include "exec-util.h" #include "list.h" #include "log-context.h" #include "namespace.h" #include "numa-util.h" #include "ratelimit.h" #include "rlimit-util.h" #include "time-util.h" #define EXEC_STDIN_DATA_MAX (64U*1024U*1024U) typedef enum ExecUtmpMode { EXEC_UTMP_INIT, EXEC_UTMP_LOGIN, EXEC_UTMP_USER, _EXEC_UTMP_MODE_MAX, _EXEC_UTMP_MODE_INVALID = -EINVAL, } ExecUtmpMode; typedef enum ExecInput { EXEC_INPUT_NULL, EXEC_INPUT_TTY, EXEC_INPUT_TTY_FORCE, EXEC_INPUT_TTY_FAIL, EXEC_INPUT_SOCKET, EXEC_INPUT_NAMED_FD, EXEC_INPUT_DATA, EXEC_INPUT_FILE, _EXEC_INPUT_MAX, _EXEC_INPUT_INVALID = -EINVAL, } ExecInput; typedef enum ExecOutput { EXEC_OUTPUT_INHERIT, EXEC_OUTPUT_NULL, EXEC_OUTPUT_TTY, EXEC_OUTPUT_KMSG, EXEC_OUTPUT_KMSG_AND_CONSOLE, EXEC_OUTPUT_JOURNAL, EXEC_OUTPUT_JOURNAL_AND_CONSOLE, EXEC_OUTPUT_SOCKET, EXEC_OUTPUT_NAMED_FD, EXEC_OUTPUT_FILE, EXEC_OUTPUT_FILE_APPEND, EXEC_OUTPUT_FILE_TRUNCATE, _EXEC_OUTPUT_MAX, _EXEC_OUTPUT_INVALID = -EINVAL, } ExecOutput; typedef enum ExecPreserveMode { EXEC_PRESERVE_NO, EXEC_PRESERVE_YES, EXEC_PRESERVE_RESTART, EXEC_PRESERVE_ON_SUCCESS, _EXEC_PRESERVE_MODE_MAX, _EXEC_PRESERVE_MODE_INVALID = -EINVAL, } ExecPreserveMode; typedef enum ExecKeyringMode { EXEC_KEYRING_INHERIT, EXEC_KEYRING_PRIVATE, EXEC_KEYRING_SHARED, _EXEC_KEYRING_MODE_MAX, _EXEC_KEYRING_MODE_INVALID = -EINVAL, } ExecKeyringMode; typedef enum ExecMemoryTHP { /* * Inherit default from process that starts systemd, i.e. do not make * any PR_SET_THP_DISABLE call. */ EXEC_MEMORY_THP_INHERIT, EXEC_MEMORY_THP_DISABLE, /* Disable THPs completely for the process */ EXEC_MEMORY_THP_MADVISE, /* Disable THPs for the process except when madvised */ /* * Use system default THP setting. this can be used when the process that * starts systemd has already disabled THPs via PR_SET_THP_DISABLE, and we * want to restore the system default THP setting at process invocation time. */ EXEC_MEMORY_THP_SYSTEM, _EXEC_MEMORY_THP_MAX, _EXEC_MEMORY_THP_INVALID = -EINVAL, } ExecMemoryTHP; /* Contains start and exit information about an executed command. */ typedef struct ExecStatus { dual_timestamp start_timestamp; dual_timestamp exit_timestamp; dual_timestamp handoff_timestamp; pid_t pid; int code; /* as in siginfo_t::si_code */ int status; /* as in siginfo_t::si_status */ } ExecStatus; /* Stores information about commands we execute. Covers both configuration settings as well as runtime data. */ typedef struct ExecCommand { char *path; char **argv; ExecStatus exec_status; /* Note that this is not serialized to sd-executor */ ExecCommandFlags flags; LIST_FIELDS(ExecCommand, command); /* useful for chaining commands */ } ExecCommand; /* Encapsulates certain aspects of the runtime environment that is to be shared between multiple otherwise separate * invocations of commands. Specifically, this allows sharing of /tmp and /var/tmp data as well as network namespaces * between invocations of commands. This is a reference counted object, with one reference taken by each currently * active command invocation that wants to share this runtime. */ typedef struct ExecSharedRuntime { unsigned n_ref; Manager *manager; char *id; /* Unit id of the owner */ char *tmp_dir; char *var_tmp_dir; /* An AF_UNIX socket pair, that contains a datagram containing a file descriptor referring to the network * namespace. */ int netns_storage_socket[2]; /* Like netns_storage_socket, but the file descriptor is referring to the IPC namespace. */ int ipcns_storage_socket[2]; /* Like netns_storage_socket, but the file descriptor is referring to the user namespace. */ int userns_storage_socket[2]; } ExecSharedRuntime; typedef struct ExecRuntime { ExecSharedRuntime *shared; DynamicCreds *dynamic_creds; /* The path to the ephemeral snapshot of the root directory or root image if one was requested. */ char *ephemeral_copy; /* An AF_UNIX socket pair that receives the locked file descriptor referring to the ephemeral copy of * the root directory or root image. The lock prevents tmpfiles from removing the ephemeral snapshot * until we're done using it. */ int ephemeral_storage_socket[2]; } ExecRuntime; static inline bool EXEC_DIRECTORY_TYPE_SHALL_CHOWN(ExecDirectoryType t) { /* Returns true for the ExecDirectoryTypes that we shall chown()ing for the user to. We do this for * all of them, except for configuration */ return t >= 0 && t < _EXEC_DIRECTORY_TYPE_MAX && t != EXEC_DIRECTORY_CONFIGURATION; } typedef struct ExecQuotaLimit { uint64_t quota_absolute; /* absolute quota in bytes; if UINT64_MAX relative quota configured, see below */ uint32_t quota_scale; /* relative quota to backend size, scaled to 0…UINT32_MAX */ bool quota_enforce; bool quota_accounting; } ExecQuotaLimit; typedef struct ExecDirectoryItem { char *path; char **symlinks; ExecDirectoryFlags flags; bool idmapped; } ExecDirectoryItem; typedef struct ExecDirectory { mode_t mode; size_t n_items; ExecDirectoryItem *items; ExecQuotaLimit exec_quota; } ExecDirectory; typedef enum ExecCleanMask { /* In case you wonder why the bitmask below doesn't use "directory" in its name: we want to keep this * generic so that .timer timestamp files can nicely be covered by this too, and similar. */ EXEC_CLEAN_RUNTIME = 1U << EXEC_DIRECTORY_RUNTIME, EXEC_CLEAN_STATE = 1U << EXEC_DIRECTORY_STATE, EXEC_CLEAN_CACHE = 1U << EXEC_DIRECTORY_CACHE, EXEC_CLEAN_LOGS = 1U << EXEC_DIRECTORY_LOGS, EXEC_CLEAN_CONFIGURATION = 1U << EXEC_DIRECTORY_CONFIGURATION, EXEC_CLEAN_FDSTORE = 1U << _EXEC_DIRECTORY_TYPE_MAX, EXEC_CLEAN_NONE = 0, EXEC_CLEAN_ALL = (1U << (_EXEC_DIRECTORY_TYPE_MAX+1)) - 1, _EXEC_CLEAN_MASK_INVALID = -EINVAL, } ExecCleanMask; /* Encodes configuration parameters applied to invoked commands. Does not carry runtime data, but only configuration * changes sourced from unit files and suchlike. ExecContext objects are usually embedded into Unit objects, and do not * change after being loaded. */ typedef struct ExecContext { char **environment; char **environment_files; char **pass_environment; char **unset_environment; struct rlimit *rlimit[_RLIMIT_MAX]; char *working_directory; char *root_directory; char *root_image, *root_verity, *root_hash_path, *root_hash_sig_path; struct iovec root_hash, root_hash_sig; MountOptions *root_image_options; char *root_mstack; bool root_ephemeral; bool working_directory_missing_ok:1; bool working_directory_home:1; bool oom_score_adjust_set:1; bool coredump_filter_set:1; bool nice_set:1; bool ioprio_is_set:1; bool cpu_sched_set:1; /* This is not exposed to the user but available internally. We need it to make sure that whenever we * spawn /usr/bin/mount it is run in the same process group as us so that the autofs logic detects * that it belongs to us and we don't enter a trigger loop. */ bool same_pgrp; bool cpu_sched_reset_on_fork; bool non_blocking; mode_t umask; int oom_score_adjust; int nice; int ioprio; int cpu_sched_policy; int cpu_sched_priority; uint64_t coredump_filter; CPUSet cpu_set; NUMAPolicy numa_policy; bool cpu_affinity_from_numa; ExecInput std_input; ExecOutput std_output; ExecOutput std_error; /* At least one of stdin/stdout/stderr was initialized from an fd passed in. This boolean survives * the fds being closed. This only makes sense for transient units. */ bool stdio_as_fds; bool root_directory_as_fd; char *stdio_fdname[3]; char *stdio_file[3]; void *stdin_data; size_t stdin_data_size; nsec_t timer_slack_nsec; char *tty_path; bool tty_reset; bool tty_vhangup; bool tty_vt_disallocate; unsigned tty_rows; unsigned tty_cols; bool ignore_sigpipe; ExecKeyringMode keyring_mode; /* Since resolving these names might involve socket * connections and we don't want to deadlock ourselves these * names are resolved on execution only and in the child * process. */ char *user; char *group; char **supplementary_groups; int set_login_environment; char *pam_name; char *utmp_id; ExecUtmpMode utmp_mode; bool no_new_privileges; bool selinux_context_ignore; bool apparmor_profile_ignore; bool smack_process_label_ignore; char *selinux_context; char *apparmor_profile; char *smack_process_label; char **read_write_paths, **read_only_paths, **inaccessible_paths, **exec_paths, **no_exec_paths; char **exec_search_path; unsigned long mount_propagation_flag; BindMount *bind_mounts; size_t n_bind_mounts; TemporaryFileSystem *temporary_filesystems; size_t n_temporary_filesystems; MountImage *mount_images; size_t n_mount_images; MountImage *extension_images; size_t n_extension_images; char **extension_directories; uint64_t capability_bounding_set; uint64_t capability_ambient_set; int secure_bits; int syslog_priority; bool syslog_level_prefix; char *syslog_identifier; struct iovec* log_extra_fields; size_t n_log_extra_fields; Set *log_filter_allowed_patterns; Set *log_filter_denied_patterns; RateLimit log_ratelimit; int log_level_max; char *log_namespace; ProtectProc protect_proc; /* hidepid= */ ProcSubset proc_subset; /* subset= */ PrivateBPF private_bpf; uint64_t bpf_delegate_commands, bpf_delegate_maps, bpf_delegate_programs, bpf_delegate_attachments; int private_mounts; int mount_apivfs; int bind_log_sockets; int memory_ksm; ExecMemoryTHP memory_thp; PrivateTmp private_tmp; /* Those are not independent parameters, but are calculated from */ PrivateTmp private_var_tmp; /* other parameters in unit_patch_contexts(). */ bool private_network; bool private_devices; PrivateUsers private_users; bool private_ipc; bool protect_kernel_tunables; bool protect_kernel_modules; bool protect_kernel_logs; bool protect_clock; ProtectControlGroups protect_control_groups; ProtectSystem protect_system; ProtectHome protect_home; PrivatePIDs private_pids; ProtectHostname protect_hostname; char *private_hostname; bool dynamic_user; bool remove_ipc; bool memory_deny_write_execute; bool restrict_realtime; bool restrict_suid_sgid; bool lock_personality; unsigned long personality; unsigned long restrict_namespaces; /* The CLONE_NEWxyz flags permitted to the unit's processes */ unsigned long delegate_namespaces; /* The CLONE_NEWxyz flags delegated to the unit's processes */ Set *restrict_filesystems; bool restrict_filesystems_allow_list:1; Hashmap *syscall_filter; Set *syscall_archs; int syscall_errno; bool syscall_allow_list:1; Hashmap *syscall_log; bool syscall_log_allow_list:1; /* Log listed system calls */ bool address_families_allow_list:1; Set *address_families; char *user_namespace_path; char *network_namespace_path; char *ipc_namespace_path; ExecDirectory directories[_EXEC_DIRECTORY_TYPE_MAX]; ExecPreserveMode runtime_directory_preserve_mode; usec_t timeout_clean_usec; Hashmap *set_credentials; /* output id → ExecSetCredential */ Hashmap *load_credentials; /* output id → ExecLoadCredential */ OrderedSet *import_credentials; /* ExecImportCredential */ ImagePolicy *root_image_policy, *mount_image_policy, *extension_image_policy; } ExecContext; typedef enum ExecFlags { EXEC_APPLY_SANDBOXING = 1 << 0, EXEC_APPLY_CHROOT = 1 << 1, EXEC_APPLY_TTY_STDIN = 1 << 2, EXEC_PASS_LOG_UNIT = 1 << 3, /* Whether to pass the unit name to the service's journal stream connection */ EXEC_CHOWN_DIRECTORIES = 1 << 4, /* chown() the runtime/state/cache/log directories to the user we run as, under all conditions */ EXEC_NSS_DYNAMIC_BYPASS = 1 << 5, /* Set the SYSTEMD_NSS_DYNAMIC_BYPASS environment variable, to disable nss-systemd blocking on PID 1, for use by dbus-daemon */ EXEC_CGROUP_DELEGATE = 1 << 6, EXEC_IS_CONTROL = 1 << 7, EXEC_CONTROL_CGROUP = 1 << 8, /* Place the process not in the indicated cgroup but in a subcgroup '/.control', but only EXEC_CGROUP_DELEGATE and EXEC_IS_CONTROL is set, too */ EXEC_SETUP_CREDENTIALS = 1 << 9, /* Set up the credential store logic */ EXEC_SETUP_CREDENTIALS_FRESH = 1 << 10, /* Set up a new credential store (disable reuse) */ /* The following are not used by execute.c, but by consumers internally */ EXEC_PASS_FDS = 1 << 11, EXEC_SETENV_RESULT = 1 << 12, EXEC_SET_WATCHDOG = 1 << 13, EXEC_SETENV_MONITOR_RESULT = 1 << 14, /* Pass exit status to OnFailure= and OnSuccess= dependencies. */ } ExecFlags; /* Parameters for a specific invocation of a command. This structure is put together right before a command is * executed. */ typedef struct ExecParameters { RuntimeScope runtime_scope; ExecFlags flags; char **environment; char **files_env; int *fds; char **fd_names; size_t n_socket_fds; size_t n_stashed_fds; char *cgroup_path; uint64_t cgroup_id; char **prefix; char *received_credentials_directory; char *received_encrypted_credentials_directory; char *confirm_spawn; bool shall_confirm_spawn; usec_t watchdog_usec; int *idle_pipe; int stdin_fd; int stdout_fd; int stderr_fd; int root_directory_fd; /* An fd that is closed by the execve(), and thus will result in EOF when the execve() is done. */ int exec_fd; char *notify_socket; LIST_HEAD(OpenFile, open_files); char *fallback_smack_process_label; int user_lookup_fd; int handoff_timestamp_fd; int pidref_transport_fd; int bpf_restrict_fs_map_fd; /* Used for logging in the executor functions */ char *unit_id; sd_id128_t invocation_id; char invocation_id_string[SD_ID128_STRING_MAX]; bool debug_invocation; bool selinux_context_net; } ExecParameters; #define EXEC_PARAMETERS_INIT(_flags) \ (ExecParameters) { \ .flags = (_flags), \ .stdin_fd = -EBADF, \ .stdout_fd = -EBADF, \ .stderr_fd = -EBADF, \ .root_directory_fd = -EBADF, \ .exec_fd = -EBADF, \ .bpf_restrict_fs_map_fd = -EBADF, \ .user_lookup_fd = -EBADF, \ .handoff_timestamp_fd = -EBADF, \ .pidref_transport_fd = -EBADF, \ } static inline bool exec_input_is_terminal(ExecInput i) { return IN_SET(i, EXEC_INPUT_TTY, EXEC_INPUT_TTY_FORCE, EXEC_INPUT_TTY_FAIL); } static inline bool exec_context_has_tty(const ExecContext *context) { assert(context); return context->tty_path || exec_input_is_terminal(context->std_input) || context->std_output == EXEC_OUTPUT_TTY || context->std_error == EXEC_OUTPUT_TTY; } static inline bool exec_input_is_inheritable(ExecInput i) { /* We assume these listed inputs refer to bidirectional streams, and hence duplicating them from * stdin to stdout/stderr makes sense and hence allowing EXEC_OUTPUT_INHERIT makes sense, too. * Outputs such as regular files or sealed data memfds otoh don't really make sense to be * duplicated for both input and output at the same time (since they then would cause a feedback * loop). */ return exec_input_is_terminal(i) || IN_SET(i, EXEC_INPUT_SOCKET, EXEC_INPUT_NAMED_FD); } int exec_spawn( Unit *unit, ExecCommand *command, const ExecContext *context, ExecParameters *exec_params, ExecRuntime *runtime, const CGroupContext *cgroup_context, PidRef *ret); void exec_command_done(ExecCommand *c); void exec_command_done_array(ExecCommand *c, size_t n); ExecCommand* exec_command_free(ExecCommand *c); DEFINE_TRIVIAL_CLEANUP_FUNC(ExecCommand*, exec_command_free); ExecCommand* exec_command_free_list(ExecCommand *c); void exec_command_free_array(ExecCommand **c, size_t n); void exec_command_reset_status_array(ExecCommand *c, size_t n); void exec_command_reset_status_list_array(ExecCommand **c, size_t n); void exec_command_dump(ExecCommand *c, FILE *f, const char *prefix); void exec_command_dump_list(ExecCommand *c, FILE *f, const char *prefix); void exec_command_append_list(ExecCommand **l, ExecCommand *e); int exec_command_set(ExecCommand *c, const char *path, ...) _sentinel_; int exec_command_append(ExecCommand *c, const char *path, ...) _sentinel_; void exec_context_init(ExecContext *c); void exec_context_done(ExecContext *c); void exec_context_dump(const ExecContext *c, FILE* f, const char *prefix); int exec_context_apply_environment(Unit *u, ExecContext *c, char **env, UnitWriteFlags flags); int exec_context_apply_set_credential(Unit *u, ExecContext *c, const char *id, const void *data, size_t size, bool encrypted, UnitWriteFlags flags, const char **reterr_message); int exec_context_destroy_runtime_directory(const ExecContext *c, const char *runtime_prefix); int exec_context_destroy_mount_ns_dir(Unit *u); const char* exec_context_fdname(const ExecContext *c, int fd_index) _pure_; bool exec_context_may_touch_console(const ExecContext *c); bool exec_context_maintains_privileges(const ExecContext *c); bool exec_context_shall_ansi_seq_reset(const ExecContext *c); int exec_context_get_effective_ioprio(const ExecContext *c); bool exec_context_get_effective_mount_apivfs(const ExecContext *c); bool exec_context_get_effective_bind_log_sockets(const ExecContext *c); void exec_context_free_log_extra_fields(ExecContext *c); void exec_context_revert_tty(ExecContext *c, sd_id128_t invocation_id); int exec_context_get_clean_directories(ExecContext *c, char **prefix, ExecCleanMask mask, char ***ret); int exec_context_get_clean_mask(ExecContext *c, ExecCleanMask *ret); const char* exec_context_tty_path(const ExecContext *context); int exec_context_apply_tty_size(const ExecContext *context, int input_fd, int output_fd, const char *tty_path); void exec_context_tty_reset(const ExecContext *context, const ExecParameters *parameters, sd_id128_t invocation_id); uint64_t exec_context_get_rlimit(const ExecContext *c, const char *name); int exec_context_get_oom_score_adjust(const ExecContext *c); uint64_t exec_context_get_coredump_filter(const ExecContext *c); int exec_context_get_nice(const ExecContext *c); int exec_context_get_cpu_sched_policy(const ExecContext *c); int exec_context_get_cpu_sched_priority(const ExecContext *c); uint64_t exec_context_get_timer_slack_nsec(const ExecContext *c); bool exec_context_get_set_login_environment(const ExecContext *c); char** exec_context_get_syscall_filter(const ExecContext *c); char** exec_context_get_syscall_archs(const ExecContext *c); char** exec_context_get_syscall_log(const ExecContext *c); char** exec_context_get_address_families(const ExecContext *c); char** exec_context_get_restrict_filesystems(const ExecContext *c); bool exec_context_restrict_namespaces_set(const ExecContext *c); bool exec_context_restrict_filesystems_set(const ExecContext *c); bool exec_context_with_rootfs(const ExecContext *c); bool exec_context_with_rootfs_strict(const ExecContext *c); int exec_context_has_vpicked_extensions(const ExecContext *context); void exec_status_start(ExecStatus *s, pid_t pid, const dual_timestamp *ts); void exec_status_exit(ExecStatus *s, const ExecContext *context, pid_t pid, int code, int status); void exec_status_handoff(ExecStatus *s, const struct ucred *ucred, const dual_timestamp *ts); void exec_status_dump(const ExecStatus *s, FILE *f, const char *prefix); void exec_status_reset(ExecStatus *s); int exec_shared_runtime_acquire(Manager *m, const ExecContext *c, const char *id, bool create, ExecSharedRuntime **ret); ExecSharedRuntime *exec_shared_runtime_destroy(ExecSharedRuntime *r); DECLARE_TRIVIAL_UNREF_FUNC(ExecSharedRuntime, exec_shared_runtime); DEFINE_TRIVIAL_CLEANUP_FUNC(ExecSharedRuntime*, exec_shared_runtime_unref); int exec_shared_runtime_serialize(const Manager *m, FILE *f, FDSet *fds); int exec_shared_runtime_deserialize_compat(Unit *u, const char *key, const char *value, FDSet *fds); int exec_shared_runtime_deserialize_one(Manager *m, const char *value, FDSet *fds); void exec_shared_runtime_done(ExecSharedRuntime *rt); void exec_shared_runtime_vacuum(Manager *m); int exec_runtime_make(const Unit *unit, const ExecContext *context, ExecSharedRuntime *shared, DynamicCreds *creds, ExecRuntime **ret); ExecRuntime* exec_runtime_free(ExecRuntime *rt); DEFINE_TRIVIAL_CLEANUP_FUNC(ExecRuntime*, exec_runtime_free); ExecRuntime* exec_runtime_destroy(ExecRuntime *rt); void exec_runtime_clear(ExecRuntime *rt); int exec_params_needs_control_subcgroup(const ExecParameters *params); int exec_params_get_cgroup_path(const ExecParameters *params, const CGroupContext *c, const char *prefix, char **ret); void exec_params_shallow_clear(ExecParameters *p); void exec_params_deep_clear(ExecParameters *p); void exec_params_dump(const ExecParameters *p, FILE* f, const char *prefix); bool exec_context_get_cpu_affinity_from_numa(const ExecContext *c); void exec_directory_done(ExecDirectory *d); int exec_directory_add(ExecDirectory *d, const char *path, const char *symlink, ExecDirectoryFlags flags); void exec_directory_sort(ExecDirectory *d); bool exec_directory_is_private(const ExecContext *context, ExecDirectoryType type); DECLARE_STRING_TABLE_LOOKUP_FROM_STRING(exec_clean_mask, ExecCleanMask); DECLARE_STRING_TABLE_LOOKUP(exec_input, ExecInput); DECLARE_STRING_TABLE_LOOKUP(exec_output, ExecOutput); DECLARE_STRING_TABLE_LOOKUP(exec_utmp_mode, ExecUtmpMode); DECLARE_STRING_TABLE_LOOKUP(exec_preserve_mode, ExecPreserveMode); DECLARE_STRING_TABLE_LOOKUP(exec_keyring_mode, ExecKeyringMode); DECLARE_STRING_TABLE_LOOKUP(exec_directory_type_symlink, ExecDirectoryType); DECLARE_STRING_TABLE_LOOKUP(exec_directory_type_mode, ExecDirectoryType); DECLARE_STRING_TABLE_LOOKUP(exec_resource_type, ExecDirectoryType); DECLARE_STRING_TABLE_LOOKUP(exec_memory_thp, ExecMemoryTHP); bool exec_needs_mount_namespace(const ExecContext *context, const ExecParameters *params); bool exec_needs_network_namespace(const ExecContext *context); bool exec_needs_ipc_namespace(const ExecContext *context); bool exec_needs_pid_namespace(const ExecContext *context, const ExecParameters *params); ProtectControlGroups exec_get_protect_control_groups(const ExecContext *context); bool exec_needs_cgroup_namespace(const ExecContext *context); bool exec_needs_cgroup_mount(const ExecContext *context); bool exec_is_cgroup_mount_read_only(const ExecContext *context); const char* exec_get_private_notify_socket_path(const ExecContext *context, const ExecParameters *params, bool needs_sandboxing); int exec_log_level_max_with_exec_params(const ExecContext *context, const ExecParameters *params); int exec_log_level_max(const ExecContext *context); /* These logging macros do the same logging as those in unit.h, but using ExecContext and ExecParameters * instead of the unit object, so that it can be used in the sd-executor context (where the unit object is * not available). */ #define LOG_EXEC_ID_FIELD(ep) \ ((ep)->runtime_scope == RUNTIME_SCOPE_USER ? "USER_UNIT=" : "UNIT=") #define LOG_EXEC_INVOCATION_ID_FIELD(ep) \ ((ep)->runtime_scope == RUNTIME_SCOPE_USER ? "USER_INVOCATION_ID=" : "INVOCATION_ID=") /* Like LOG_MESSAGE(), but with the unit name prefixed. */ #define LOG_EXEC_MESSAGE(ep, fmt, ...) LOG_MESSAGE("%s: " fmt, (ep)->unit_id, ##__VA_ARGS__) #define LOG_EXEC_ID(ep) LOG_ITEM("%s%s", LOG_EXEC_ID_FIELD(ep), (ep)->unit_id) #define LOG_EXEC_INVOCATION_ID(ep) LOG_ITEM("%s%s", LOG_EXEC_INVOCATION_ID_FIELD(ep), (ep)->invocation_id_string) #define _LOG_CONTEXT_PUSH_EXEC(ec, ep, p, c) \ const ExecContext *c = (ec); \ const ExecParameters *p = (ep); \ LOG_CONTEXT_PUSH_KEY_VALUE(LOG_EXEC_ID_FIELD(p), p->unit_id); \ LOG_CONTEXT_PUSH_KEY_VALUE(LOG_EXEC_INVOCATION_ID_FIELD(p), p->invocation_id_string); \ LOG_CONTEXT_PUSH_IOV(c->log_extra_fields, c->n_log_extra_fields) \ LOG_CONTEXT_SET_LOG_LEVEL(exec_log_level_max_with_exec_params(c, p)) \ LOG_SET_PREFIX(p->unit_id); #define LOG_CONTEXT_PUSH_EXEC(ec, ep) \ _LOG_CONTEXT_PUSH_EXEC(ec, ep, UNIQ_T(p, UNIQ), UNIQ_T(c, UNIQ))