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-rw-r--r--src/ninep/pty.zig11
1 files changed, 10 insertions, 1 deletions
diff --git a/src/ninep/pty.zig b/src/ninep/pty.zig
index 4009af49..aa0f499a 100644
--- a/src/ninep/pty.zig
+++ b/src/ninep/pty.zig
@@ -61,6 +61,12 @@ pub fn writeCtl(p: *Pardes, req: Req, id: usize) Reply {
while (it.next()) |raw| {
const line = std.mem.trim(u8, raw, " \t\r");
if (line.len == 0) continue;
+ // A shell restarted where the directory is gone would not start:
+ // refused before anything runs, as Tty there is.
+ if (!apply and std.mem.eql(u8, line, "exec")) if (p.panes[id]) |pane| if (pardes.exec.missingDir(p, pane.cwdSlice())) {
+ const dir = pane.cwdSlice();
+ return tree.failText(req.tag, E.NOENT, std.fmt.bufPrint(&p.fs.ename, "exec: {s}: no such directory", .{dir[0..@min(dir.len, 256)]}) catch "exec: no such directory");
+ };
if (!verb(p, id, line, apply)) return tree.failText(req.tag, E.INVAL, if (outOfRange(line)) e_winsize_range else e_bad_pty_ctl);
}
}
@@ -196,7 +202,10 @@ pub fn writeRun(p: *Pardes, req: Req, id: usize, pane: *Pane) Reply {
const pf = &pane.fs;
const state = pane.terminal orelse return tree.failText(req.tag, E.INVAL, e_bad_line);
const marks = &state.stream.handler;
- if (pane.command != null) {
+ if (pane.shell_failed) {
+ // Its shell never started: no prompt is coming to wait for.
+ answer(p, slot, "error shell gone", .{});
+ } else if (pane.command != null) {
// Its child is the command, and no shell is there to take a line.
answer(p, slot, "error {s}", .{if (pane.command_done) "command done; not a shell" else "a command runs here, not a shell"});
} else if (pf.unmarked) {