details:
https://github.com/nginx/njs/commit/361a7fc60f3d0fa223160fc1864f097af849ad70
branches: master
commit: 361a7fc60f3d0fa223160fc1864f097af849ad70
user: Dmitry Volyntsev <xei...@nginx.com>
date: Thu, 31 Oct 2024 18:15:22 -0700
description:
QuickJS: introduced process.kill().
---
src/qjs.c | 102 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 102 insertions(+)
diff --git a/src/qjs.c b/src/qjs.c
index b529f1bb..44e9fe95 100644
--- a/src/qjs.c
+++ b/src/qjs.c
@@ -9,6 +9,14 @@
#include <sys/types.h>
#include <unistd.h>
+#include <errno.h>
+#include <signal.h>
+
+
+typedef struct {
+ njs_str_t name;
+ int value;
+} qjs_signal_entry_t;
extern char **environ;
@@ -19,10 +27,37 @@ static JSValue qjs_njs_to_string_tag(JSContext *ctx,
JSValueConst this_val);
static JSValue qjs_process_to_string_tag(JSContext *ctx, JSValueConst
this_val);
static JSValue qjs_process_argv(JSContext *ctx, JSValueConst this_val);
static JSValue qjs_process_env(JSContext *ctx, JSValueConst this_val);
+static JSValue qjs_process_kill(JSContext *ctx, JSValueConst this_val,
+ int argc, JSValueConst *argv);
static JSValue qjs_process_pid(JSContext *ctx, JSValueConst this_val);
static JSValue qjs_process_ppid(JSContext *ctx, JSValueConst this_val);
+/* P1990 signals from `man 7 signal` are supported */
+static qjs_signal_entry_t qjs_signals_table[] = {
+ { njs_str("ABRT"), SIGABRT },
+ { njs_str("ALRM"), SIGALRM },
+ { njs_str("CHLD"), SIGCHLD },
+ { njs_str("CONT"), SIGCONT },
+ { njs_str("FPE"), SIGFPE },
+ { njs_str("HUP"), SIGHUP },
+ { njs_str("ILL"), SIGILL },
+ { njs_str("INT"), SIGINT },
+ { njs_str("KILL"), SIGKILL },
+ { njs_str("PIPE"), SIGPIPE },
+ { njs_str("QUIT"), SIGQUIT },
+ { njs_str("SEGV"), SIGSEGV },
+ { njs_str("STOP"), SIGSTOP },
+ { njs_str("TSTP"), SIGTSTP },
+ { njs_str("TERM"), SIGTERM },
+ { njs_str("TTIN"), SIGTTIN },
+ { njs_str("TTOU"), SIGTTOU },
+ { njs_str("USR1"), SIGUSR1 },
+ { njs_str("USR2"), SIGUSR2 },
+ { njs_null_str, 0 }
+};
+
+
static const JSCFunctionListEntry qjs_global_proto[] = {
JS_CGETSET_DEF("njs", qjs_njs_getter, NULL),
};
@@ -39,6 +74,7 @@ static const JSCFunctionListEntry qjs_process_proto[] = {
JS_CGETSET_DEF("[Symbol.toStringTag]", qjs_process_to_string_tag, NULL),
JS_CGETSET_DEF("argv", qjs_process_argv, NULL),
JS_CGETSET_DEF("env", qjs_process_env, NULL),
+ JS_CFUNC_DEF("kill", 2, qjs_process_kill),
JS_CGETSET_DEF("pid", qjs_process_pid, NULL),
JS_CGETSET_DEF("ppid", qjs_process_ppid, NULL),
};
@@ -251,6 +287,72 @@ error:
}
+static JSValue
+qjs_process_kill(JSContext *ctx, JSValueConst this_val, int argc,
+ JSValueConst *argv)
+{
+ int signo, pid;
+ JSValue val;
+ njs_str_t name;
+ const char *signal;
+ qjs_signal_entry_t *entry;
+
+ if (JS_ToInt32(ctx, &pid, argv[0]) < 0) {
+ return JS_EXCEPTION;
+ }
+
+ if (JS_IsNumber(argv[1])) {
+ if (JS_ToInt32(ctx, &signo, argv[1]) < 0) {
+ return JS_EXCEPTION;
+ }
+
+ if (signo < 0 || signo >= NSIG) {
+ return JS_ThrowTypeError(ctx, "unknown signal: %d", signo);
+ }
+
+ } else {
+ val = JS_ToString(ctx, argv[1]);
+ if (JS_IsException(val)) {
+ return JS_EXCEPTION;
+ }
+
+ signal = JS_ToCString(ctx, val);
+ if (signal == NULL) {
+ JS_FreeValue(ctx, val);
+ return JS_EXCEPTION;
+ }
+
+ if (njs_strlen(signal) < 3 || memcmp(signal, "SIG", 3) != 0) {
+ JS_FreeCString(ctx, signal);
+ return JS_ThrowTypeError(ctx, "unknown signal: %s", signal);
+ }
+
+ name.start = (u_char *) signal + 3;
+ name.length = njs_strlen(signal) - 3;
+
+ for (entry = qjs_signals_table; entry->name.length != 0; entry++) {
+ if (njs_strstr_eq(&entry->name, &name)) {
+ signo = entry->value;
+ break;
+ }
+ }
+
+ JS_FreeCString(ctx, signal);
+
+ if (entry->name.length == 0) {
+ return JS_ThrowTypeError(ctx, "unknown signal: %s", signal);
+ }
+ }
+
+ if (kill(pid, signo) < 0) {
+ return JS_ThrowTypeError(ctx, "kill failed with (%d:%s)", errno,
+ strerror(errno));
+ }
+
+ return JS_TRUE;
+}
+
+
static JSValue
qjs_process_pid(JSContext *ctx, JSValueConst this_val)
{
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