| ... | @@ -1,225 +0,0 @@ |
| 1 | const errno = std.posix.errno; |
| 2 | const unexpectedErrno = std.posix.unexpectedErrno; |
| 3 | |
| 4 | pub const Error = error{ |
| 5 | SystemResources, |
| 6 | InvalidFileDescriptor, |
| 7 | NameTooLong, |
| 8 | TooBig, |
| 9 | AccessDenied, |
| 10 | PermissionDenied, |
| 11 | InputOutput, |
| 12 | FileSystem, |
| 13 | FileNotFound, |
| 14 | InvalidExe, |
| 15 | NotDir, |
| 16 | FileBusy, |
| 17 | /// Returned when the child fails to execute either in the pre-exec() initialization step, or |
| 18 | /// when exec(3) is invoked. |
| 19 | ChildExecFailed, |
| 20 | } || std.posix.UnexpectedError; |
| 21 | |
| 22 | pub const Attr = struct { |
| 23 | attr: std.c.posix_spawnattr_t, |
| 24 | |
| 25 | pub fn init() Error!Attr { |
| 26 | var attr: std.c.posix_spawnattr_t = undefined; |
| 27 | switch (errno(std.c.posix_spawnattr_init(&attr))) { |
| 28 | .SUCCESS => return Attr{ .attr = attr }, |
| 29 | .NOMEM => return error.SystemResources, |
| 30 | .INVAL => unreachable, |
| 31 | else => |err| return unexpectedErrno(err), |
| 32 | } |
| 33 | } |
| 34 | |
| 35 | pub fn deinit(self: *Attr) void { |
| 36 | defer self.* = undefined; |
| 37 | switch (errno(std.c.posix_spawnattr_destroy(&self.attr))) { |
| 38 | .SUCCESS => return, |
| 39 | .INVAL => unreachable, // Invalid parameters. |
| 40 | else => unreachable, |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | pub fn get(self: Attr) Error!std.c.POSIX_SPAWN { |
| 45 | var flags: std.c.POSIX_SPAWN = undefined; |
| 46 | switch (errno(std.c.posix_spawnattr_getflags(&self.attr, &flags))) { |
| 47 | .SUCCESS => return flags, |
| 48 | .INVAL => unreachable, |
| 49 | else => |err| return unexpectedErrno(err), |
| 50 | } |
| 51 | } |
| 52 | |
| 53 | pub fn set(self: *Attr, flags: std.c.POSIX_SPAWN) Error!void { |
| 54 | switch (errno(std.c.posix_spawnattr_setflags(&self.attr, flags))) { |
| 55 | .SUCCESS => return, |
| 56 | .INVAL => unreachable, |
| 57 | else => |err| return unexpectedErrno(err), |
| 58 | } |
| 59 | } |
| 60 | }; |
| 61 | |
| 62 | pub const Actions = struct { |
| 63 | actions: std.c.posix_spawn_file_actions_t, |
| 64 | |
| 65 | pub fn init() Error!Actions { |
| 66 | var actions: std.c.posix_spawn_file_actions_t = undefined; |
| 67 | switch (errno(std.c.posix_spawn_file_actions_init(&actions))) { |
| 68 | .SUCCESS => return Actions{ .actions = actions }, |
| 69 | .NOMEM => return error.SystemResources, |
| 70 | .INVAL => unreachable, |
| 71 | else => |err| return unexpectedErrno(err), |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | pub fn deinit(self: *Actions) void { |
| 76 | defer self.* = undefined; |
| 77 | switch (errno(std.c.posix_spawn_file_actions_destroy(&self.actions))) { |
| 78 | .SUCCESS => return, |
| 79 | .INVAL => unreachable, // Invalid parameters. |
| 80 | else => unreachable, |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | pub fn open(self: *Actions, fd: std.c.fd_t, path: []const u8, flags: u32, mode: std.c.mode_t) Error!void { |
| 85 | const posix_path = try std.posix.toPosixPath(path); |
| 86 | return self.openZ(fd, &posix_path, flags, mode); |
| 87 | } |
| 88 | |
| 89 | pub fn openZ(self: *Actions, fd: std.c.fd_t, path: [*:0]const u8, flags: u32, mode: std.c.mode_t) Error!void { |
| 90 | switch (errno(std.c.posix_spawn_file_actions_addopen(&self.actions, fd, path, @as(c_int, @bitCast(flags)), mode))) { |
| 91 | .SUCCESS => return, |
| 92 | .BADF => return error.InvalidFileDescriptor, |
| 93 | .NOMEM => return error.SystemResources, |
| 94 | .NAMETOOLONG => return error.NameTooLong, |
| 95 | .INVAL => unreachable, // the value of file actions is invalid |
| 96 | else => |err| return unexpectedErrno(err), |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | pub fn close(self: *Actions, fd: std.c.fd_t) Error!void { |
| 101 | switch (errno(std.c.posix_spawn_file_actions_addclose(&self.actions, fd))) { |
| 102 | .SUCCESS => return, |
| 103 | .BADF => return error.InvalidFileDescriptor, |
| 104 | .NOMEM => return error.SystemResources, |
| 105 | .INVAL => unreachable, // the value of file actions is invalid |
| 106 | .NAMETOOLONG => unreachable, |
| 107 | else => |err| return unexpectedErrno(err), |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | pub fn dup2(self: *Actions, fd: std.c.fd_t, newfd: std.c.fd_t) Error!void { |
| 112 | switch (errno(std.c.posix_spawn_file_actions_adddup2(&self.actions, fd, newfd))) { |
| 113 | .SUCCESS => return, |
| 114 | .BADF => return error.InvalidFileDescriptor, |
| 115 | .NOMEM => return error.SystemResources, |
| 116 | .INVAL => unreachable, // the value of file actions is invalid |
| 117 | .NAMETOOLONG => unreachable, |
| 118 | else => |err| return unexpectedErrno(err), |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | pub fn inherit(self: *Actions, fd: std.c.fd_t) Error!void { |
| 123 | switch (errno(std.c.posix_spawn_file_actions_addinherit_np(&self.actions, fd))) { |
| 124 | .SUCCESS => return, |
| 125 | .BADF => return error.InvalidFileDescriptor, |
| 126 | .NOMEM => return error.SystemResources, |
| 127 | .INVAL => unreachable, // the value of file actions is invalid |
| 128 | .NAMETOOLONG => unreachable, |
| 129 | else => |err| return unexpectedErrno(err), |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | pub fn chdir(self: *Actions, path: []const u8) Error!void { |
| 134 | const posix_path = try std.posix.toPosixPath(path); |
| 135 | return self.chdirZ(&posix_path); |
| 136 | } |
| 137 | |
| 138 | pub fn chdirZ(self: *Actions, path: [*:0]const u8) Error!void { |
| 139 | switch (errno(std.c.posix_spawn_file_actions_addchdir_np(&self.actions, path))) { |
| 140 | .SUCCESS => return, |
| 141 | .NOMEM => return error.SystemResources, |
| 142 | .NAMETOOLONG => return error.NameTooLong, |
| 143 | .BADF => unreachable, |
| 144 | .INVAL => unreachable, // the value of file actions is invalid |
| 145 | else => |err| return unexpectedErrno(err), |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | pub fn fchdir(self: *Actions, fd: std.c.fd_t) Error!void { |
| 150 | switch (errno(std.c.posix_spawn_file_actions_addfchdir_np(&self.actions, fd))) { |
| 151 | .SUCCESS => return, |
| 152 | .BADF => return error.InvalidFileDescriptor, |
| 153 | .NOMEM => return error.SystemResources, |
| 154 | .INVAL => unreachable, // the value of file actions is invalid |
| 155 | .NAMETOOLONG => unreachable, |
| 156 | else => |err| return unexpectedErrno(err), |
| 157 | } |
| 158 | } |
| 159 | }; |
| 160 | |
| 161 | pub fn spawn( |
| 162 | path: []const u8, |
| 163 | actions: ?Actions, |
| 164 | attr: ?Attr, |
| 165 | argv: [*:null]const ?[*:0]const u8, |
| 166 | envp: [*:null]const ?[*:0]const u8, |
| 167 | ) Error!std.c.pid_t { |
| 168 | const posix_path = try std.posix.toPosixPath(path); |
| 169 | return spawnZ(&posix_path, actions, attr, argv, envp); |
| 170 | } |
| 171 | |
| 172 | pub fn spawnZ( |
| 173 | path: [*:0]const u8, |
| 174 | actions: ?Actions, |
| 175 | attr: ?Attr, |
| 176 | argv: [*:null]const ?[*:0]const u8, |
| 177 | envp: [*:null]const ?[*:0]const u8, |
| 178 | ) Error!std.c.pid_t { |
| 179 | var pid: std.c.pid_t = undefined; |
| 180 | switch (errno(std.c.posix_spawn( |
| 181 | &pid, |
| 182 | path, |
| 183 | if (actions) |a| &a.actions else null, |
| 184 | if (attr) |a| &a.attr else null, |
| 185 | argv, |
| 186 | envp, |
| 187 | ))) { |
| 188 | .SUCCESS => return pid, |
| 189 | .@"2BIG" => return error.TooBig, |
| 190 | .NOMEM => return error.SystemResources, |
| 191 | .BADF => return error.InvalidFileDescriptor, |
| 192 | .ACCES => return error.AccessDenied, |
| 193 | .IO => return error.InputOutput, |
| 194 | .LOOP => return error.FileSystem, |
| 195 | .NAMETOOLONG => return error.NameTooLong, |
| 196 | .NOENT => return error.FileNotFound, |
| 197 | .NOEXEC => return error.InvalidExe, |
| 198 | .NOTDIR => return error.NotDir, |
| 199 | .TXTBSY => return error.FileBusy, |
| 200 | .BADARCH => return error.InvalidExe, |
| 201 | .BADEXEC => return error.InvalidExe, |
| 202 | .FAULT => unreachable, |
| 203 | .INVAL => unreachable, |
| 204 | else => |err| return unexpectedErrno(err), |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | pub fn waitpid(pid: std.c.pid_t, flags: u32) Error!std.posix.WaitPidResult { |
| 209 | var status: c_int = undefined; |
| 210 | while (true) { |
| 211 | const rc = waitpid(pid, &status, @as(c_int, @intCast(flags))); |
| 212 | switch (errno(rc)) { |
| 213 | .SUCCESS => return std.posix.WaitPidResult{ |
| 214 | .pid = @as(std.c.pid_t, @intCast(rc)), |
| 215 | .status = @as(u32, @bitCast(status)), |
| 216 | }, |
| 217 | .INTR => continue, |
| 218 | .CHILD => return error.ChildExecFailed, |
| 219 | .INVAL => unreachable, // Invalid flags. |
| 220 | else => unreachable, |
| 221 | } |
| 222 | } |
| 223 | } |
| 224 | |
| 225 | const std = @import("std"); |