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darwin: wrap allocating and deallocating mach ports for a task

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This commit is contained in:
Jakub Konka 2022-12-11 14:40:27 +01:00
parent 35e3069ab7
commit 2a65971eb0
2 changed files with 41 additions and 1 deletions
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22
lib/std/c/darwin.zig
View File

@ -164,6 +164,21 @@ pub const mach_vm_address_t = usize;
pub const vm_offset_t = usize;
pub const mach_vm_size_t = u64;
pub const mach_msg_type_number_t = natural_t;
pub const mach_port_right_t = natural_t;
pub const ipc_space_t = mach_port_t;
pub const ipc_space_port_t = ipc_space_t;
pub const MACH_PORT_RIGHT = enum(mach_port_right_t) {
SEND = 0,
RECEIVE = 1,
SEND_ONCE = 2,
PORT_SET = 3,
DEAD_NAME = 4,
/// Obsolete right
LABELH = 5,
/// Right not implemented
NUMBER = 6,
};
extern "c" var mach_task_self_: mach_port_t;
pub fn mach_task_self() callconv(.C) mach_port_t {
@ -506,7 +521,12 @@ pub extern "c" fn mach_vm_protect(
new_protection: vm_prot_t,
) kern_return_t;
pub extern "c" fn mach_port_deallocate(target_tport: mach_port_name_t, task: mach_port_name_t) kern_return_t;
pub extern "c" fn mach_port_allocate(
task: ipc_space_t,
right: mach_port_right_t,
name: *mach_port_name_t,
) kern_return_t;
pub extern "c" fn mach_port_deallocate(task: ipc_space_t, name: mach_port_name_t) kern_return_t;
pub extern "c" fn task_info(
target_task: task_name_t,

20
lib/std/os/darwin.zig
View File

@ -24,6 +24,26 @@ const mach_task = if (builtin.target.isDarwin()) struct {
return self.port != 0;
}
pub fn allocatePort(self: MachTask, right: std.c.MACH_PORT_RIGHT) MachError!MachTask {
var out_port: std.c.mach_port_name_t = undefined;
switch (std.c.getKernError(std.c.mach_port_allocate(
self.port,
@enumToInt(right),
&out_port,
))) {
.SUCCESS => return .{ .port = out_port },
.FAILURE => return error.PermissionDenied,
else => |err| {
log.err("mach_task_allocate kernel call failed with error code: {s}", .{@tagName(err)});
return error.Unexpected;
},
}
}
pub fn deallocatePort(self: MachTask, port: MachTask) void {
_ = std.c.getKernError(std.c.mach_port_deallocate(self.port, port.port));
}
pub const RegionInfo = struct {
pub const Tag = enum {
basic,