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[3.14] gh-127146: Emscripten: Make os.umask() actually work (GH-136706) (#136711)

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Provide a stub implementation of umask that is enough to get some tests passing.
More work is needed upstream in Emscripten to make all umask tests to pass.
(cherry picked from commit 12e52cad71)

Co-authored-by: Hood Chatham <roberthoodchatham@gmail.com>
This commit is contained in:
Miss Islington (bot) 2025-07-16 18:12:36 +02:00 • committed by GitHub
parent ca6db4fdae
commit 4eee754091
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2 changed files with 23 additions and 5 deletions
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22
Python/emscripten_syscalls.c
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@ -7,7 +7,7 @@
// defined with weak linkage so we can override it.
EM_JS(int, __syscall_getuid32_js, (void), {
// If we're in node and we can, report the native uid
if (typeof process !== "undefined" && typeof process.getuid === "function") {
if (ENVIRONMENT_IS_NODE) {
return process.getuid();
}
// Fall back to the stub case of returning 0.
@ -17,3 +17,23 @@ EM_JS(int, __syscall_getuid32_js, (void), {
int __syscall_getuid32(void) {
return __syscall_getuid32_js();
}
EM_JS(int, __syscall_umask_js, (int mask), {
// If we're in node and we can, call native process.umask()
if (ENVIRONMENT_IS_NODE) {
try {
return process.umask(mask);
} catch(e) {
// oops...
// NodeJS docs: "In Worker threads, process.umask(mask) will throw an exception."
// umask docs: "This system call always succeeds"
return 0;
}
}
// Fall back to the stub case of returning 0.
return 0;
})
int __syscall_umask(int mask) {
return __syscall_umask_js(mask);
}