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Add many commands to /usr/bin and fix the timeout handling of poll_scan. #235

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Merged
yomaytk merged 1 commit into from
Mar 14, 2026
Merged

Add many commands to /usr/bin and fix the timeout handling of poll_scan. #235

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100 changes: 93 additions & 7 deletions browser/js-kernel.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3018,7 +3018,83 @@ var Module = (() => {
["cat", "busybox"],
["touch", "busybox"],
["ps", "busybox"],
["wc", "busybox"]
["wc", "busybox"],
["awk", "busybox"],
["base64", "busybox"],
["cal", "busybox"],
["cksum", "busybox"],
["cmp", "busybox"],
["comm", "busybox"],
["cut", "busybox"],
["dd", "busybox"],
["diff", "busybox"],
["dos2unix", "busybox"],
["du", "busybox"],
["echo", "busybox"],
["ed", "busybox"],
["env", "busybox"],
["expand", "busybox"],
["factor", "busybox"],
["false", "busybox"],
["find", "busybox"],
["fold", "busybox"],
["free", "busybox"],
["grep", "busybox"],
["egrep", "busybox"],
["fgrep", "busybox"],
["groups", "busybox"],
["hd", "busybox"],
["hexdump", "busybox"],
["id", "busybox"],
["less", "busybox"],
["link", "busybox"],
["logname", "busybox"],
["md5sum", "busybox"],
["mktemp", "busybox"],
["more", "busybox"],
["nl", "busybox"],
["nproc", "busybox"],
["od", "busybox"],
["paste", "busybox"],
["printenv", "busybox"],
["printf", "busybox"],
["pwd", "busybox"],
["readlink", "busybox"],
["realpath", "busybox"],
["reset", "busybox"],
["rev", "busybox"],
["sed", "busybox"],
["sha1sum", "busybox"],
["sha256sum", "busybox"],
["sha512sum", "busybox"],
["shuf", "busybox"],
["sort", "busybox"],
["stat", "busybox"],
["strings", "busybox"],
["stty", "busybox"],
["sum", "busybox"],
["tac", "busybox"],
["tee", "busybox"],
["test", "busybox"],
["time", "busybox"],
["timeout", "busybox"],
["tr", "busybox"],
["true", "busybox"],
["truncate", "busybox"],
["tsort", "busybox"],
["tty", "busybox"],
["uniq", "busybox"],
["unix2dos", "busybox"],
["unlink", "busybox"],
["usleep", "busybox"],
["users", "busybox"],
["w", "busybox"],
["which", "busybox"],
["who", "busybox"],
["whoami", "busybox"],
["xargs", "busybox"],
["xxd", "busybox"],
["yes", "busybox"]
]));
}
}
Expand Down Expand Up @@ -4488,7 +4564,6 @@ var Module = (() => {

// Scan all FDs for readiness, tolerating PTY "wait again" exceptions.
let nonzero = 0;
let needsWait = false;
for (var i = 0; i < nfds; i++) {
var pollfd = fds + 8 * i;
var fd = HEAP32[pollfd >> 2];
Expand All @@ -4503,7 +4578,6 @@ var Module = (() => {
// PTY throws ErrnoError(1006) when not readable and timeout is set.
if (e.name === "ErrnoError") {
mask = 0;
needsWait = true;
} else {
throw e;
}
Expand All @@ -4515,10 +4589,22 @@ var Module = (() => {
HEAP16[pollfd + 6 >> 1] = mask;
}

// If no FDs are ready and there is a non-zero timeout, sleep before returning.
if (nonzero === 0 && (timeoutSec > 0 || (timeoutSec === -1 && needsWait))) {
var delayMs = timeoutSec > 0 ? Math.min(timeoutSec * 1000, 30000) : 1000;
return new Promise(resolve => setTimeout(() => resolve(0), delayMs));
// If no FDs are ready, wait for PTY data or timeout.
if (nonzero === 0 && timeoutSec !== 0) {
return new Promise(resolve => {
var timeoutId;
var handler = PTY.onReadable(() => {
handler.dispose();
clearTimeout(timeoutId);
resolve(0);
});
if (timeoutSec > 0) {
timeoutId = setTimeout(() => {
handler.dispose();
resolve(0);
}, Math.min(timeoutSec * 1000, 30000));
}
});
}

return nonzero;
Expand Down
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