Auto merge of #1090 - xd009642:master, r=alexcrichton

Add ptrace for non-apple BSDs

So yesterday I did a PR for ptrace for apple, I've now gone through the ptrace header files for the other BSDs supported by libc and added ptrace + constants for all of them.

Given the lack of ptrace in any of them I don't know if the test has to be changed at all for the new functions so I'll tackle any CI errors that come up if and as they appear.

Author: bors

src/unix/bsd/freebsdlike/dragonfly/mod.rs

@@ -429,6 +429,8 @@ pub const NOTE_CHILD: ::uint32_t = 0x00000004;
 pub const SO_SNDSPACE: ::c_int = 0x100a;
 pub const SO_CPUHINT: ::c_int = 0x1030;
 
+pub const PT_FIRSTMACH: ::c_int = 32;
+
 // https://github.com/DragonFlyBSD/DragonFlyBSD/blob/master/sys/net/if.h#L101
 pub const IFF_UP: ::c_int = 0x1; // interface is up
 pub const IFF_BROADCAST: ::c_int = 0x2; // broadcast address valid

src/unix/bsd/freebsdlike/freebsd/mod.rs

@@ -474,6 +474,39 @@ pub const LOCAL_CREDS: ::c_int = 2;
 pub const LOCAL_CONNWAIT: ::c_int = 4;
 pub const LOCAL_VENDOR: ::c_int = SO_VENDOR;
 
+pub const PT_LWPINFO: ::c_int = 13;
+pub const PT_GETNUMLWPS: ::c_int = 14;
+pub const PT_GETLWPLIST: ::c_int = 15;
+pub const PT_CLEARSTEP: ::c_int = 16;
+pub const PT_SETSTEP: ::c_int = 17;
+pub const PT_SUSPEND: ::c_int = 18;
+pub const PT_RESUME: ::c_int = 19;
+pub const PT_TO_SCE: ::c_int = 20;
+pub const PT_TO_SCX: ::c_int = 21;
+pub const PT_SYSCALL: ::c_int = 22;
+pub const PT_FOLLOW_FORK: ::c_int = 23;
+pub const PT_LWP_EVENTS: ::c_int = 24;
+pub const PT_GET_EVENT_MASK: ::c_int = 25;
+pub const PT_SET_EVENT_MASK: ::c_int = 26;
+pub const PT_GETREGS: ::c_int = 33;
+pub const PT_SETREGS: ::c_int = 34;
+pub const PT_GETFPREGS: ::c_int = 35;
+pub const PT_SETFPREGS: ::c_int = 36;
+pub const PT_GETDBREGS: ::c_int = 37;
+pub const PT_SETDBREGS: ::c_int = 38;
+pub const PT_VM_TIMESTAMP: ::c_int = 40;
+pub const PT_VM_ENTRY: ::c_int = 41;
+pub const PT_FIRSTMACH: ::c_int = 64;
+
+pub const PTRACE_EXEC: ::c_int = 0x0001;
+pub const PTRACE_SCE: ::c_int = 0x0002;
+pub const PTRACE_SCX: ::c_int = 0x0004;
+pub const PTRACE_SYSCALL: ::c_int = PTRACE_SCE | PTRACE_SCX;
+pub const PTRACE_FORK: ::c_int = 0x0008;
+pub const PTRACE_LWP: ::c_int = 0x0010;
+pub const PTRACE_VFORK: ::c_int = 0x0020;
+pub const PTRACE_DEFAULT: ::c_int = PTRACE_EXEC;
+
 pub const AF_SLOW: ::c_int = 33;
 pub const AF_SCLUSTER: ::c_int = 34;
 pub const AF_ARP: ::c_int = 35;

src/unix/bsd/freebsdlike/mod.rs

@@ -624,6 +624,18 @@ pub const PF_NATM: ::c_int = AF_NATM;
 pub const PF_ATM: ::c_int = AF_ATM;
 pub const PF_NETGRAPH: ::c_int = AF_NETGRAPH;
 
+pub const PT_TRACE_ME: ::c_int = 0;
+pub const PT_READ_I: ::c_int = 1;
+pub const PT_READ_D: ::c_int = 2;
+pub const PT_WRITE_I: ::c_int = 4;
+pub const PT_WRITE_D: ::c_int = 5;
+pub const PT_CONTINUE: ::c_int = 7;
+pub const PT_KILL: ::c_int = 8;
+pub const PT_STEP: ::c_int = 9;
+pub const PT_ATTACH: ::c_int = 10;
+pub const PT_DETACH: ::c_int = 11;
+pub const PT_IO: ::c_int = 12;
+
 pub const SOMAXCONN: ::c_int = 128;
 
 pub const MSG_OOB: ::c_int = 0x00000001;
@@ -1205,6 +1217,10 @@ extern {
     pub fn settimeofday(tv: *const ::timeval, tz: *const ::timezone) -> ::c_int;
     pub fn getdomainname(name: *mut ::c_char, len: ::c_int) -> ::c_int;
     pub fn setdomainname(name: *const ::c_char, len: ::c_int) -> ::c_int;
+    pub fn ptrace(request: ::c_int,
+                  pid: ::pid_t,
+                  addr: *mut ::c_char,
+                  data: ::c_int) -> ::c_int;
 }
 
 cfg_if! {

src/unix/bsd/netbsdlike/mod.rs

@@ -314,6 +314,17 @@ pub const POSIX_MADV_DONTNEED : ::c_int = 4;
 pub const PTHREAD_CREATE_JOINABLE : ::c_int = 0;
 pub const PTHREAD_CREATE_DETACHED : ::c_int = 1;
 
+pub const PT_TRACE_ME: ::c_int = 0;
+pub const PT_READ_I: ::c_int = 1;
+pub const PT_READ_D: ::c_int = 2;
+pub const PT_WRITE_I: ::c_int = 4;
+pub const PT_WRITE_D: ::c_int = 5;
+pub const PT_CONTINUE: ::c_int = 7;
+pub const PT_KILL: ::c_int = 8;
+pub const PT_ATTACH: ::c_int = 9;
+pub const PT_DETACH: ::c_int = 10;
+pub const PT_IO: ::c_int = 11;
+
 // http://man.openbsd.org/OpenBSD-current/man2/clock_getres.2
 // The man page says clock_gettime(3) can accept various values as clockid_t but
 // http://fxr.watson.org/fxr/source/kern/kern_time.c?v=OPENBSD;im=excerpts#L161

src/unix/bsd/netbsdlike/netbsd/mod.rs

@@ -969,6 +969,15 @@ pub const SOCK_NONBLOCK: ::c_int = 0x20000000;
 
 pub const SIGSTKSZ : ::size_t = 40960;
 
+pub const PT_DUMPCORE: ::c_int = 12;
+pub const PT_LWPINFO: ::c_int = 13;
+pub const PT_SYSCALL: ::c_int = 14;
+pub const PT_SYSCALLEMU: ::c_int = 15;
+pub const PT_SET_EVENT_MASK: ::c_int = 16;
+pub const PT_GET_EVENT_MASK: ::c_int = 17;
+pub const PT_GET_PROCESS_STATE: ::c_int = 18;
+pub const PT_FIRSTMACH: ::c_int = 32;
+
 // dirfd() is a macro on netbsd to access
 // the first field of the struct where dirp points to:
 // http://cvsweb.netbsd.org/bsdweb.cgi/src/include/dirent.h?rev=1.36

src/unix/bsd/netbsdlike/openbsdlike/mod.rs

@@ -14,6 +14,7 @@ pub type pthread_cond_t = *mut ::c_void;
 pub type pthread_condattr_t = *mut ::c_void;
 pub type pthread_rwlock_t = *mut ::c_void;
 pub type pthread_rwlockattr_t = *mut ::c_void;
+pub type caddr_t = *mut ::c_char;
 
 s! {
     pub struct dirent {
@@ -695,6 +696,8 @@ pub const SOCK_CLOEXEC: ::c_int = 0x8000;
 pub const SOCK_NONBLOCK: ::c_int = 0x4000;
 pub const SOCK_DNS: ::c_int = 0x1000;
 
+pub const PTRACE_FORK: ::c_int = 0x0002;
+
 pub const WCONTINUED: ::c_int = 8;
 
 f! {
@@ -734,6 +737,10 @@ extern {
     pub fn getentropy(buf: *mut ::c_void, buflen: ::size_t) -> ::c_int;
     pub fn setresgid(rgid: ::gid_t, egid: ::gid_t, sgid: ::gid_t) -> ::c_int;
     pub fn setresuid(ruid: ::uid_t, euid: ::uid_t, suid: ::uid_t) -> ::c_int;
+    pub fn ptrace(request: ::c_int,
+                  pid: ::pid_t,
+                  addr: caddr_t,
+                  data: ::c_int) -> ::c_int;
 }
 
 cfg_if! {