std.os.linux: add ptrace

Author: andrewrk

lib/std/os/linux.zig

@@ -1820,6 +1820,23 @@ pub fn seccomp(operation: u32, flags: u32, args: ?*const anyopaque) usize {
     return syscall3(.seccomp, operation, flags, @ptrToInt(args));
 }
 
+pub fn ptrace(
+    req: u32,
+    pid: pid_t,
+    addr: usize,
+    data: usize,
+    addr2: usize,
+) usize {
+    return syscall5(
+        .ptrace,
+        req,
+        @bitCast(usize, @as(isize, pid)),
+        addr,
+        data,
+        addr2,
+    );
+}
+
 pub const E = switch (native_arch) {
     .mips, .mipsel => @import("linux/errno/mips.zig").E,
     .sparc, .sparcel, .sparc64 => @import("linux/errno/sparc.zig").E,
@@ -5721,3 +5738,40 @@ pub const AUDIT = struct {
         }
     };
 };
+
+pub const PTRACE = struct {
+    pub const TRACEME = 0;
+    pub const PEEKTEXT = 1;
+    pub const PEEKDATA = 2;
+    pub const PEEKUSER = 3;
+    pub const POKETEXT = 4;
+    pub const POKEDATA = 5;
+    pub const POKEUSER = 6;
+    pub const CONT = 7;
+    pub const KILL = 8;
+    pub const SINGLESTEP = 9;
+    pub const GETREGS = 12;
+    pub const SETREGS = 13;
+    pub const GETFPREGS = 14;
+    pub const SETFPREGS = 15;
+    pub const ATTACH = 16;
+    pub const DETACH = 17;
+    pub const GETFPXREGS = 18;
+    pub const SETFPXREGS = 19;
+    pub const SYSCALL = 24;
+    pub const SETOPTIONS = 0x4200;
+    pub const GETEVENTMSG = 0x4201;
+    pub const GETSIGINFO = 0x4202;
+    pub const SETSIGINFO = 0x4203;
+    pub const GETREGSET = 0x4204;
+    pub const SETREGSET = 0x4205;
+    pub const SEIZE = 0x4206;
+    pub const INTERRUPT = 0x4207;
+    pub const LISTEN = 0x4208;
+    pub const PEEKSIGINFO = 0x4209;
+    pub const GETSIGMASK = 0x420a;
+    pub const SETSIGMASK = 0x420b;
+    pub const SECCOMP_GET_FILTER = 0x420c;
+    pub const SECCOMP_GET_METADATA = 0x420d;
+    pub const GET_SYSCALL_INFO = 0x420e;
+};