1 /* $NetBSD: linux_sched.h,v 1.11 2024/09/28 19:35:56 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifndef _LINUX_SCHED_H 34 #define _LINUX_SCHED_H 35 36 /* 37 * Flags passed to the Linux __clone(2) system call. 38 */ 39 #define LINUX_CLONE_CSIGNAL 0x000000ff /* signal to be sent at exit */ 40 #define LINUX_CLONE_VM 0x00000100 /* share address space */ 41 #define LINUX_CLONE_FS 0x00000200 /* share "file system" info */ 42 #define LINUX_CLONE_FILES 0x00000400 /* share file descriptors */ 43 #define LINUX_CLONE_SIGHAND 0x00000800 /* share signal actions */ 44 #define LINUX_CLONE_PID 0x00001000 /* share process ID */ 45 #define LINUX_CLONE_PTRACE 0x00002000 /* ptrace(2) continues on 46 child */ 47 #define LINUX_CLONE_VFORK 0x00004000 /* parent blocks until child 48 exits */ 49 #define LINUX_CLONE_PARENT 0x00008000 /* want same parent as cloner */ 50 #define LINUX_CLONE_THREAD 0x00010000 /* same thread group */ 51 #define LINUX_CLONE_NEWNS 0x00020000 /* new namespace group */ 52 #define LINUX_CLONE_SYSVSEM 0x00040000 /* share SysV SEM_UNDO */ 53 #define LINUX_CLONE_SETTLS 0x00080000 /* create new TLS for child */ 54 #define LINUX_CLONE_PARENT_SETTID \ 55 0x00100000 /* set TID in the parent */ 56 #define LINUX_CLONE_CHILD_CLEARTID \ 57 0x00200000 /* clear TID in the child */ 58 #define LINUX_CLONE_DETACHED 0x00400000 /* unused */ 59 #define LINUX_CLONE_UNTRACED 0x00800000 /* set if parent cannot force CLONE_PTRACE */ 60 #define LINUX_CLONE_CHILD_SETTID \ 61 0x01000000 /* set TID in the child */ 62 #define LINUX_CLONE_STOPPED 0x02000000 /* start in stopped state */ 63 64 /* 65 * Flags that clone supports but are yet to be supported in NetBSD 66 */ 67 68 #define LINUX_CLONE_PIDFD 0x00001000 /* since Linux 5.2 */ 69 #define LINUX_CLONE_NEWCGROUP 0x02000000 /* New cgroup NS */ 70 #define LINUX_CLONE_NEWUTS 0x04000000 71 #define LINUX_CLONE_NEWIPC 0x08000000 72 #define LINUX_CLONE_NEWUSER 0x10000000 73 #define LINUX_CLONE_NEWPID 0x20000000 74 #define LINUX_CLONE_NEWNET 0x40000000 75 #define LINUX_CLONE_IO 0x80000000 76 77 /* Flags for the clone3() syscall. */ 78 #define LINUX_CLONE_CLEAR_SIGHAND 0x100000000ULL 79 #define LINUX_CLONE_INTO_CGROUP 0x200000000ULL 80 #define LINUX_CLONE_NEWTIME 0x00000080 81 82 #define LINUX_CLONE_LEGACY_FLAGS 0xffffffffULL 83 84 #define LINUX_CLONE_ALLOWED_FLAGS ( \ 85 LINUX_CLONE_VM | LINUX_CLONE_FS | LINUX_CLONE_FILES | \ 86 LINUX_CLONE_SIGHAND | LINUX_CLONE_THREAD | LINUX_CLONE_VFORK | \ 87 LINUX_CLONE_PARENT_SETTID | LINUX_CLONE_CHILD_CLEARTID | \ 88 LINUX_CLONE_CHILD_SETTID | LINUX_CLONE_SETTLS) 89 90 #define LINUX_CLONE_UNIMPLEMENTED_FLAGS ( \ 91 LINUX_CLONE_NEWNS | LINUX_CLONE_NEWUTS | LINUX_CLONE_NEWIPC | \ 92 LINUX_CLONE_NEWUSER | LINUX_CLONE_NEWPID | LINUX_CLONE_NEWNET | \ 93 LINUX_CLONE_PIDFD) 94 95 #define LINUX_CSIGNAL 0x000000ff 96 struct linux_sched_param { 97 int sched_priority; 98 }; 99 100 #define LINUX_SCHED_OTHER 0 101 #define LINUX_SCHED_FIFO 1 102 #define LINUX_SCHED_RR 2 103 104 struct linux_timespec { 105 linux_time_t tv_sec; /* seconds */ 106 long tv_nsec; /* nanoseconds */ 107 }; 108 109 struct linux_itimerspec { 110 struct linux_timespec it_interval; 111 struct linux_timespec it_value; 112 }; 113 114 struct linux_user_clone3_args { 115 uint64_t flags; /* Flags bit mask */ 116 uint64_t pidfd; /* Where to store PID file descriptor (int *) */ 117 uint64_t child_tid; /* Where to store child TID, in child's memory 118 (pid_t *) */ 119 uint64_t parent_tid; /* Where to store child TID, in parent's memory 120 (pid_t *) */ 121 uint64_t exit_signal; /* Signal to deliver to parent on child 122 termination */ 123 uint64_t stack; /* Pointer to lowest byte of stack */ 124 uint64_t stack_size; /* Size of stack */ 125 uint64_t tls; /* Location of new TLS */ 126 uint64_t set_tid; /* Pointer to a pid_t array (since Linux 5.5) */ 127 uint64_t set_tid_size; /* Number of elements in set_tid (since Linux 128 5.5) */ 129 uint64_t cgroup; /* File descriptor for target cgroup of child 130 (since Linux 5.7) */ 131 }; 132 133 134 #define LINUX_CLOCK_REALTIME 0 135 #define LINUX_CLOCK_MONOTONIC 1 136 #define LINUX_CLOCK_PROCESS_CPUTIME_ID 2 137 #define LINUX_CLOCK_THREAD_CPUTIME_ID 3 138 #define LINUX_CLOCK_MONOTONIC_RAW 4 139 #define LINUX_CLOCK_REALTIME_COARSE 5 140 #define LINUX_CLOCK_MONOTONIC_COARSE 6 141 #define LINUX_CLOCK_BOOTTIME 7 142 #define LINUX_CLOCK_BOOTTIME_ALARM 8 143 #define LINUX_CLOCK_REALTIME_ALARM 9 144 145 #define LINUX_TIMER_ABSTIME 0x01 146 147 int linux_to_native_clockid(clockid_t *, clockid_t); 148 149 void native_to_linux_timespec(struct linux_timespec *, 150 const struct timespec *); 151 void linux_to_native_timespec(struct timespec *, 152 const struct linux_timespec *); 153 154 void native_to_linux_itimerspec(struct linux_itimerspec *, 155 const struct itimerspec *); 156 void linux_to_native_itimerspec(struct itimerspec *, 157 const struct linux_itimerspec *); 158 159 int linux_to_native_timer_create_clockid(clockid_t *, clockid_t); 160 161 int linux_to_native_timerfd_settime_flags(int *, int); 162 163 #endif /* _LINUX_SCHED_H */ 164