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os.zig: expose ptrace wrapper for darwin and linux

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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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41
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{ pub const PtraceError = error{
DeviceBusy, DeviceBusy,
InputOutput,
Overflow,
ProcessNotFound, ProcessNotFound,
PermissionDenied, PermissionDenied,
} || UnexpectedError; } || UnexpectedError;
/// TODO on other OSes pub fn ptrace(request: u32, pid: pid_t, addr: usize, signal: usize) PtraceError!void {
pub fn ptrace(request: i32, pid: pid_t, addr: ?[*]u8, signal: i32) PtraceError!void { if (builtin.os.tag == .windows or builtin.os.tag == .wasi)
switch (builtin.os.tag) { @compileError("Unsupported OS");
.macos, .ios, .tvos, .watchos => {},
else => @compileError("TODO implement ptrace"), return switch (builtin.os.tag) {
} .linux => switch (errno(linux.ptrace(request, pid, addr, signal, 0))) {
return switch (errno(system.ptrace(request, pid, addr, signal))) { .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 => {}, .SUCCESS => {},
.SRCH => error.ProcessNotFound, .SRCH => error.ProcessNotFound,
.INVAL => unreachable, .INVAL => unreachable,
.PERM => error.PermissionDenied, .PERM => error.PermissionDenied,
.BUSY => error.DeviceBusy, .BUSY => error.DeviceBusy,
else => |err| return unexpectedErrno(err), 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),
},
}; };
} }