Auto merge of #3074 - mbyzhang:master, r=JohnTitor

linux: add PTRACE_SYSCALL_INFO_*

Add `PTRACE_SYSCALL_INFO_*` for `ptrace_syscall_info.op`.

Author: bors

libc-test/semver/linux-gnu.txt

@@ -362,6 +362,10 @@ PR_SET_VMA_ANON_NAME
 PROC_SUPER_MAGIC
 PTHREAD_MUTEX_ADAPTIVE_NP
 PTRACE_GET_SYSCALL_INFO
+PTRACE_SYSCALL_INFO_ENTRY
+PTRACE_SYSCALL_INFO_EXIT
+PTRACE_SYSCALL_INFO_NONE
+PTRACE_SYSCALL_INFO_SECCOMP
 QNX4_SUPER_MAGIC
 QNX6_SUPER_MAGIC
 RDTGROUP_SUPER_MAGIC

src/unix/linux_like/linux/gnu/mod.rs

@@ -874,6 +874,10 @@ pub const PTRACE_INTERRUPT: ::c_uint = 0x4207;
 pub const PTRACE_LISTEN: ::c_uint = 0x4208;
 pub const PTRACE_PEEKSIGINFO: ::c_uint = 0x4209;
 pub const PTRACE_GET_SYSCALL_INFO: ::c_uint = 0x420e;
+pub const PTRACE_SYSCALL_INFO_NONE: ::__u8 = 0;
+pub const PTRACE_SYSCALL_INFO_ENTRY: ::__u8 = 1;
+pub const PTRACE_SYSCALL_INFO_EXIT: ::__u8 = 2;
+pub const PTRACE_SYSCALL_INFO_SECCOMP: ::__u8 = 3;
 
 // linux/fs.h