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os.zig: expose ptrace wrapper for darwin and linux

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This commit is contained in:
Jakub Konka 2023-03-16 12:13:19 +01:00
parent 2ac8d90df0
commit a23ef3783b
1 changed files with 40 additions and 13 deletions
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53
lib/std/os.zig
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@ -7129,22 +7129,49 @@ pub fn timerfd_gettime(fd: i32) TimerFdGetError!linux.itimerspec {
pub const PtraceError = error{
DeviceBusy,
InputOutput,
Overflow,
ProcessNotFound,
PermissionDenied,
} || UnexpectedError;
/// TODO on other OSes
pub fn ptrace(request: i32, pid: pid_t, addr: ?[*]u8, signal: i32) PtraceError!void {
switch (builtin.os.tag) {
.macos, .ios, .tvos, .watchos => {},
else => @compileError("TODO implement ptrace"),
}
return switch (errno(system.ptrace(request, pid, addr, signal))) {
.SUCCESS => {},
.SRCH => error.ProcessNotFound,
.INVAL => unreachable,
.PERM => error.PermissionDenied,
.BUSY => error.DeviceBusy,
else => |err| return unexpectedErrno(err),
pub fn ptrace(request: u32, pid: pid_t, addr: usize, signal: usize) PtraceError!void {
if (builtin.os.tag == .windows or builtin.os.tag == .wasi)
@compileError("Unsupported OS");
return switch (builtin.os.tag) {
.linux => switch (errno(linux.ptrace(request, pid, addr, signal, 0))) {
.SUCCESS => {},
.SRCH => error.ProcessNotFound,
.FAULT => unreachable,
.INVAL => unreachable,
.IO => return error.InputOutput,
.PERM => error.PermissionDenied,
.BUSY => error.DeviceBusy,
else => |err| return unexpectedErrno(err),
},
.macos, .ios, .tvos, .watchos => switch (errno(darwin.ptrace(
math.cast(i32, request) orelse return error.Overflow,
pid,
@intToPtr(?[*]u8, addr),
math.cast(i32, signal) orelse return error.Overflow,
))) {
.SUCCESS => {},
.SRCH => error.ProcessNotFound,
.INVAL => unreachable,
.PERM => error.PermissionDenied,
.BUSY => error.DeviceBusy,
else => |err| return unexpectedErrno(err),
},
else => switch (errno(system.ptrace(request, pid, addr, signal))) {
.SUCCESS => {},
.SRCH => error.ProcessNotFound,
.INVAL => unreachable,
.PERM => error.PermissionDenied,
.BUSY => error.DeviceBusy,
else => |err| return unexpectedErrno(err),
},
};
}