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[apple/launchd.git] / launchd / src / launchd_runtime.h
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5b0a4722
A		 1/*
2 * Copyright (c) 2005 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_APACHE_LICENSE_HEADER_START@
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 *
18 * @APPLE_APACHE_LICENSE_HEADER_END@
19 */
20#ifndef __LAUNCHD_RUNTIME_H__
21#define __LAUNCHD_RUNTIME_H__
22
23#include <mach/mach.h>
24#include <sys/types.h>
25#include <bsm/libbsm.h>
26#include <stdbool.h>
ddbbfbc1
A		 27#include <stdint.h>
28#include <float.h>
5b0a4722
A		 29#include <syslog.h>
30
31#include "launchd_runtime_kill.h"
ddbbfbc1
A		 32#include "launchd_ktrace.h"
33
34#if 0
35
36/* I need to do more testing of these macros */
37
38#define min_of_type(x) \
39 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), long double), LDBL_MIN, \
40 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), double), DBL_MIN, \
41 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), float), FLT_MIN, \
42 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), char), 0, \
43 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), signed char), INT8_MIN, \
44 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), short), INT16_MIN, \
45 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), int), INT32_MIN, \
46 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), long), (__builtin_choose_expr(sizeof(x) == 4, INT32_MIN, INT64_MIN)), \
47 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), long long), INT64_MIN, \
48 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), unsigned char), 0, \
49 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), unsigned short), 0, \
50 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), unsigned int), 0, \
51 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), unsigned long), 0, \
52 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), unsigned long long), 0, \
53 (void)0))))))))))))))
54
55#define max_of_type(x) \
56 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), long double), LDBL_MAX, \
57 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), double), DBL_MAX, \
58 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), float), FLT_MAX, \
59 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), char), UINT8_MAX, \
60 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), signed char), INT8_MAX, \
61 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), short), INT16_MIN, \
62 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), int), INT32_MAX, \
63 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), long), (__builtin_choose_expr(sizeof(x) == 4, INT32_MAX, INT64_MAX)), \
64 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), long long), INT64_MAX, \
65 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), unsigned char), UINT8_MAX, \
66 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), unsigned short), UINT16_MAX, \
67 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), unsigned int), UINT32_MAX, \
68 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), unsigned long), (__builtin_choose_expr(sizeof(x) == 4, UINT32_MAX, UINT64_MAX)), \
69 __builtin_choose_expr(__builtin_types_compatible_p(typeof(x), unsigned long long), UINT64_MAX, \
70 (void)0))))))))))))))
71
72#endif
73
74#define likely(x) __builtin_expect((bool)(x), true)
75#define unlikely(x) __builtin_expect((bool)(x), false)
5b0a4722
A		 76
77struct ldcred {
dcace88f
A		 78 uid_t euid;
79 uid_t uid;
80 gid_t egid;
81 gid_t gid;
82 pid_t pid;
83 au_asid_t asid;
84 mach_port_t asport;
5b0a4722
A		 85};
86
87/*
88 * Use launchd_assumes() when we can recover, even if it means we leak or limp along.
89 *
90 * Use launchd_assert() for core initialization routines.
91 */
92#define launchd_assumes(e) \
ddbbfbc1 93 (unlikely(!(e)) ? _log_launchd_bug(__rcs_file_version__, __FILE__, __LINE__, #e), false : true)
5b0a4722
A		 94
95#define launchd_assert(e) if (__builtin_constant_p(e)) { char __compile_time_assert__[e ? 1 : -1] __attribute__((unused)); } else if (!launchd_assumes(e)) { abort(); }
96
97void _log_launchd_bug(const char *rcs_rev, const char *path, unsigned int line, const char *test);
98
99typedef void (*kq_callback)(void *, struct kevent *);
100typedef boolean_t (*mig_callback)(mach_msg_header_t *, mach_msg_header_t *);
101typedef void (*timeout_callback)(void);
102
ddbbfbc1
A		 103extern bool pid1_magic;
104extern bool low_level_debug;
105extern char g_username[128];
106extern char g_my_label[128];
107extern bool g_shutdown_debugging;
108extern bool g_verbose_boot;
109extern bool g_use_gmalloc;
dcace88f 110extern bool g_malloc_log_stacks;
ddbbfbc1
A		 111extern bool g_log_per_user_shutdown;
112extern bool g_log_strict_usage;
113extern bool g_embedded_shutdown_log;
587e987e 114extern bool g_runtime_busy_time;
dcace88f 115extern bool g_trap_sigkill_bugs;
587e987e 116extern size_t runtime_busy_cnt;
ddbbfbc1
A		 117extern int32_t g_sync_frequency;
118extern pid_t g_wsp;
119
fe044cc9 120mach_port_t runtime_get_kernel_port(void);
ddbbfbc1 121extern boolean_t launchd_internal_demux(mach_msg_header_t *Request, mach_msg_header_t *Reply);
5b0a4722
A		 122
123void runtime_add_ref(void);
124void runtime_del_ref(void);
ddbbfbc1
A		 125void runtime_add_weak_ref(void);
126void runtime_del_weak_ref(void);
587e987e
A		 127void runtime_install_timer(void);
128void runtime_remove_timer(void);
5b0a4722
A		 129
130void launchd_runtime_init(void);
131void launchd_runtime_init2(void);
132void launchd_runtime(void) __attribute__((noreturn));
133
ddbbfbc1
A		 134void launchd_log_vm_stats(void);
135
5b0a4722
A		 136int runtime_close(int fd);
137int runtime_fsync(int fd);
138
139#define RUNTIME_ADVISABLE_IDLE_TIMEOUT 30
140
141void runtime_set_timeout(timeout_callback to_cb, unsigned int sec);
142kern_return_t runtime_add_mport(mach_port_t name, mig_callback demux, mach_msg_size_t msg_size);
143kern_return_t runtime_remove_mport(mach_port_t name);
ddbbfbc1 144struct ldcred *runtime_get_caller_creds(void);
5b0a4722
A		 145
146const char *signal_to_C_name(unsigned int sig);
147const char *reboot_flags_to_C_names(unsigned int flags);
5b0a4722 148
5b0a4722
A		 149int kevent_bulk_mod(struct kevent *kev, size_t kev_cnt);
150int kevent_mod(uintptr_t ident, short filter, u_short flags, u_int fflags, intptr_t data, void *udata);
ddbbfbc1 151void log_kevent_struct(int level, struct kevent *kev_base, int indx);
5b0a4722
A		 152
153pid_t runtime_fork(mach_port_t bsport);
154
ddbbfbc1
A		 155mach_msg_return_t launchd_exc_runtime_once(mach_port_t port, mach_msg_size_t rcv_msg_size, mach_msg_size_t send_msg_size, mig_reply_error_t *bufRequest, mig_reply_error_t *bufReply, mach_msg_timeout_t to);
156
5b0a4722
A		 157kern_return_t runtime_log_forward(uid_t forward_uid, gid_t forward_gid, vm_offset_t inval, mach_msg_type_number_t invalCnt);
158kern_return_t runtime_log_drain(mach_port_t srp, vm_offset_t *outval, mach_msg_type_number_t *outvalCnt);
159
ddbbfbc1
A		 160#define LOG_APPLEONLY 0x4141504c /* AAPL in hex */
161#define LOG_SCOLDING 0x3030493b
162#define LOG_CONSOLE (1 << 31)
5b0a4722
A		 163
164struct runtime_syslog_attr {
165 const char *from_name;
166 const char *about_name;
167 const char *session_name;
168 int priority;
169 uid_t from_uid;
170 pid_t from_pid;
171 pid_t about_pid;
172};
173
174int runtime_setlogmask(int maskpri);
175void runtime_closelog(void);
176void runtime_syslog(int pri, const char *message, ...) __attribute__((format(printf, 2, 3)));
177void runtime_vsyslog(struct runtime_syslog_attr *attr, const char *message, va_list args) __attribute__((format(printf, 2, 0)));
ddbbfbc1 178void runtime_log_push(void);
5b0a4722 179
ddbbfbc1
A		 180int64_t runtime_get_wall_time(void) __attribute__((warn_unused_result));
181uint64_t runtime_get_opaque_time(void) __attribute__((warn_unused_result));
182uint64_t runtime_get_opaque_time_of_event(void) __attribute__((pure, warn_unused_result));
183uint64_t runtime_opaque_time_to_nano(uint64_t o) __attribute__((const, warn_unused_result));
184uint64_t runtime_get_nanoseconds_since(uint64_t o) __attribute__((pure, warn_unused_result));
5b0a4722
A		 185
186kern_return_t launchd_set_bport(mach_port_t name);
187kern_return_t launchd_get_bport(mach_port_t *name);
188kern_return_t launchd_mport_notify_req(mach_port_t name, mach_msg_id_t which);
189kern_return_t launchd_mport_notify_cancel(mach_port_t name, mach_msg_id_t which);
190kern_return_t launchd_mport_create_recv(mach_port_t *name);
191kern_return_t launchd_mport_deallocate(mach_port_t name);
192kern_return_t launchd_mport_make_send(mach_port_t name);
ddbbfbc1 193kern_return_t launchd_mport_copy_send(mach_port_t name);
dcace88f 194kern_return_t launchd_mport_make_send_once(mach_port_t name, mach_port_t *so);
5b0a4722
A		 195kern_return_t launchd_mport_close_recv(mach_port_t name);
196
197#endif
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