1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
2 | #ifndef _UAPI_LINUX_SCHED_H |
3 | #define _UAPI_LINUX_SCHED_H |
4 | |
5 | #include <linux/types.h> |
6 | |
7 | /* |
8 | * cloning flags: |
9 | */ |
10 | #define CSIGNAL 0x000000ff /* signal mask to be sent at exit */ |
11 | #define CLONE_VM 0x00000100 /* set if VM shared between processes */ |
12 | #define CLONE_FS 0x00000200 /* set if fs info shared between processes */ |
13 | #define CLONE_FILES 0x00000400 /* set if open files shared between processes */ |
14 | #define CLONE_SIGHAND 0x00000800 /* set if signal handlers and blocked signals shared */ |
15 | #define CLONE_PIDFD 0x00001000 /* set if a pidfd should be placed in parent */ |
16 | #define CLONE_PTRACE 0x00002000 /* set if we want to let tracing continue on the child too */ |
17 | #define CLONE_VFORK 0x00004000 /* set if the parent wants the child to wake it up on mm_release */ |
18 | #define CLONE_PARENT 0x00008000 /* set if we want to have the same parent as the cloner */ |
19 | #define CLONE_THREAD 0x00010000 /* Same thread group? */ |
20 | #define CLONE_NEWNS 0x00020000 /* New mount namespace group */ |
21 | #define CLONE_SYSVSEM 0x00040000 /* share system V SEM_UNDO semantics */ |
22 | #define CLONE_SETTLS 0x00080000 /* create a new TLS for the child */ |
23 | #define CLONE_PARENT_SETTID 0x00100000 /* set the TID in the parent */ |
24 | #define CLONE_CHILD_CLEARTID 0x00200000 /* clear the TID in the child */ |
25 | #define CLONE_DETACHED 0x00400000 /* Unused, ignored */ |
26 | #define CLONE_UNTRACED 0x00800000 /* set if the tracing process can't force CLONE_PTRACE on this clone */ |
27 | #define CLONE_CHILD_SETTID 0x01000000 /* set the TID in the child */ |
28 | #define CLONE_NEWCGROUP 0x02000000 /* New cgroup namespace */ |
29 | #define CLONE_NEWUTS 0x04000000 /* New utsname namespace */ |
30 | #define CLONE_NEWIPC 0x08000000 /* New ipc namespace */ |
31 | #define CLONE_NEWUSER 0x10000000 /* New user namespace */ |
32 | #define CLONE_NEWPID 0x20000000 /* New pid namespace */ |
33 | #define CLONE_NEWNET 0x40000000 /* New network namespace */ |
34 | #define CLONE_IO 0x80000000 /* Clone io context */ |
35 | |
36 | /* Flags for the clone3() syscall. */ |
37 | #define CLONE_CLEAR_SIGHAND 0x100000000ULL /* Clear any signal handler and reset to SIG_DFL. */ |
38 | #define CLONE_INTO_CGROUP 0x200000000ULL /* Clone into a specific cgroup given the right permissions. */ |
39 | |
40 | /* |
41 | * cloning flags intersect with CSIGNAL so can be used with unshare and clone3 |
42 | * syscalls only: |
43 | */ |
44 | #define CLONE_NEWTIME 0x00000080 /* New time namespace */ |
45 | |
46 | #ifndef __ASSEMBLY__ |
47 | /** |
48 | * struct clone_args - arguments for the clone3 syscall |
49 | * @flags: Flags for the new process as listed above. |
50 | * All flags are valid except for CSIGNAL and |
51 | * CLONE_DETACHED. |
52 | * @pidfd: If CLONE_PIDFD is set, a pidfd will be |
53 | * returned in this argument. |
54 | * @child_tid: If CLONE_CHILD_SETTID is set, the TID of the |
55 | * child process will be returned in the child's |
56 | * memory. |
57 | * @parent_tid: If CLONE_PARENT_SETTID is set, the TID of |
58 | * the child process will be returned in the |
59 | * parent's memory. |
60 | * @exit_signal: The exit_signal the parent process will be |
61 | * sent when the child exits. |
62 | * @stack: Specify the location of the stack for the |
63 | * child process. |
64 | * Note, @stack is expected to point to the |
65 | * lowest address. The stack direction will be |
66 | * determined by the kernel and set up |
67 | * appropriately based on @stack_size. |
68 | * @stack_size: The size of the stack for the child process. |
69 | * @tls: If CLONE_SETTLS is set, the tls descriptor |
70 | * is set to tls. |
71 | * @set_tid: Pointer to an array of type *pid_t. The size |
72 | * of the array is defined using @set_tid_size. |
73 | * This array is used to select PIDs/TIDs for |
74 | * newly created processes. The first element in |
75 | * this defines the PID in the most nested PID |
76 | * namespace. Each additional element in the array |
77 | * defines the PID in the parent PID namespace of |
78 | * the original PID namespace. If the array has |
79 | * less entries than the number of currently |
80 | * nested PID namespaces only the PIDs in the |
81 | * corresponding namespaces are set. |
82 | * @set_tid_size: This defines the size of the array referenced |
83 | * in @set_tid. This cannot be larger than the |
84 | * kernel's limit of nested PID namespaces. |
85 | * @cgroup: If CLONE_INTO_CGROUP is specified set this to |
86 | * a file descriptor for the cgroup. |
87 | * |
88 | * The structure is versioned by size and thus extensible. |
89 | * New struct members must go at the end of the struct and |
90 | * must be properly 64bit aligned. |
91 | */ |
92 | struct clone_args { |
93 | __aligned_u64 flags; |
94 | __aligned_u64 pidfd; |
95 | __aligned_u64 child_tid; |
96 | __aligned_u64 parent_tid; |
97 | __aligned_u64 exit_signal; |
98 | __aligned_u64 stack; |
99 | __aligned_u64 stack_size; |
100 | __aligned_u64 tls; |
101 | __aligned_u64 set_tid; |
102 | __aligned_u64 set_tid_size; |
103 | __aligned_u64 cgroup; |
104 | }; |
105 | #endif |
106 | |
107 | #define CLONE_ARGS_SIZE_VER0 64 /* sizeof first published struct */ |
108 | #define CLONE_ARGS_SIZE_VER1 80 /* sizeof second published struct */ |
109 | #define CLONE_ARGS_SIZE_VER2 88 /* sizeof third published struct */ |
110 | |
111 | /* |
112 | * Scheduling policies |
113 | */ |
114 | #define SCHED_NORMAL 0 |
115 | #define SCHED_FIFO 1 |
116 | #define SCHED_RR 2 |
117 | #define SCHED_BATCH 3 |
118 | /* SCHED_ISO: reserved but not implemented yet */ |
119 | #define SCHED_IDLE 5 |
120 | #define SCHED_DEADLINE 6 |
121 | |
122 | /* Can be ORed in to make sure the process is reverted back to SCHED_NORMAL on fork */ |
123 | #define SCHED_RESET_ON_FORK 0x40000000 |
124 | |
125 | /* |
126 | * For the sched_{set,get}attr() calls |
127 | */ |
128 | #define SCHED_FLAG_RESET_ON_FORK 0x01 |
129 | #define SCHED_FLAG_RECLAIM 0x02 |
130 | #define SCHED_FLAG_DL_OVERRUN 0x04 |
131 | #define SCHED_FLAG_KEEP_POLICY 0x08 |
132 | #define SCHED_FLAG_KEEP_PARAMS 0x10 |
133 | #define SCHED_FLAG_UTIL_CLAMP_MIN 0x20 |
134 | #define SCHED_FLAG_UTIL_CLAMP_MAX 0x40 |
135 | |
136 | #define SCHED_FLAG_KEEP_ALL (SCHED_FLAG_KEEP_POLICY | \ |
137 | SCHED_FLAG_KEEP_PARAMS) |
138 | |
139 | #define SCHED_FLAG_UTIL_CLAMP (SCHED_FLAG_UTIL_CLAMP_MIN | \ |
140 | SCHED_FLAG_UTIL_CLAMP_MAX) |
141 | |
142 | #define SCHED_FLAG_ALL (SCHED_FLAG_RESET_ON_FORK | \ |
143 | SCHED_FLAG_RECLAIM | \ |
144 | SCHED_FLAG_DL_OVERRUN | \ |
145 | SCHED_FLAG_KEEP_ALL | \ |
146 | SCHED_FLAG_UTIL_CLAMP) |
147 | |
148 | #endif /* _UAPI_LINUX_SCHED_H */ |
149 | |