From 317c0644ccf108aa23ef3fd8358bd66c2840bfc0 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 14 Apr 2024 15:40:54 +0200
Subject: Adding upstream version 5:7.2.4.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tests/modules/fork.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 tests/modules/fork.c

(limited to 'tests/modules/fork.c')

diff --git a/tests/modules/fork.c b/tests/modules/fork.c
new file mode 100644
index 0000000..d7a0d15
--- /dev/null
+++ b/tests/modules/fork.c
@@ -0,0 +1,96 @@
+
+/* define macros for having usleep */
+#define _BSD_SOURCE
+#define _DEFAULT_SOURCE
+
+#include "redismodule.h"
+#include <string.h>
+#include <assert.h>
+#include <unistd.h>
+
+#define UNUSED(V) ((void) V)
+
+int child_pid = -1;
+int exitted_with_code = -1;
+
+void done_handler(int exitcode, int bysignal, void *user_data) {
+    child_pid = -1;
+    exitted_with_code = exitcode;
+    assert(user_data==(void*)0xdeadbeef);
+    UNUSED(bysignal);
+}
+
+int fork_create(RedisModuleCtx *ctx, RedisModuleString **argv, int argc)
+{
+    long long code_to_exit_with;
+    long long usleep_us;
+    if (argc != 3) {
+        RedisModule_WrongArity(ctx);
+        return REDISMODULE_OK;
+    }
+
+    if(!RMAPI_FUNC_SUPPORTED(RedisModule_Fork)){
+        RedisModule_ReplyWithError(ctx, "Fork api is not supported in the current redis version");
+        return REDISMODULE_OK;
+    }
+
+    RedisModule_StringToLongLong(argv[1], &code_to_exit_with);
+    RedisModule_StringToLongLong(argv[2], &usleep_us);
+    exitted_with_code = -1;
+    int fork_child_pid = RedisModule_Fork(done_handler, (void*)0xdeadbeef);
+    if (fork_child_pid < 0) {
+        RedisModule_ReplyWithError(ctx, "Fork failed");
+        return REDISMODULE_OK;
+    } else if (fork_child_pid > 0) {
+        /* parent */
+        child_pid = fork_child_pid;
+        RedisModule_ReplyWithLongLong(ctx, child_pid);
+        return REDISMODULE_OK;
+    }
+
+    /* child */
+    RedisModule_Log(ctx, "notice", "fork child started");
+    usleep(usleep_us);
+    RedisModule_Log(ctx, "notice", "fork child exiting");
+    RedisModule_ExitFromChild(code_to_exit_with);
+    /* unreachable */
+    return 0;
+}
+
+int fork_exitcode(RedisModuleCtx *ctx, RedisModuleString **argv, int argc)
+{
+    UNUSED(argv);
+    UNUSED(argc);
+    RedisModule_ReplyWithLongLong(ctx, exitted_with_code);
+    return REDISMODULE_OK;
+}
+
+int fork_kill(RedisModuleCtx *ctx, RedisModuleString **argv, int argc)
+{
+    UNUSED(argv);
+    UNUSED(argc);
+    if (RedisModule_KillForkChild(child_pid) != REDISMODULE_OK)
+        RedisModule_ReplyWithError(ctx, "KillForkChild failed");
+    else
+        RedisModule_ReplyWithLongLong(ctx, 1);
+    child_pid = -1;
+    return REDISMODULE_OK;
+}
+
+int RedisModule_OnLoad(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
+    UNUSED(argv);
+    UNUSED(argc);
+    if (RedisModule_Init(ctx,"fork",1,REDISMODULE_APIVER_1)== REDISMODULE_ERR)
+        return REDISMODULE_ERR;
+
+    if (RedisModule_CreateCommand(ctx,"fork.create", fork_create,"",0,0,0) == REDISMODULE_ERR)
+        return REDISMODULE_ERR;
+
+    if (RedisModule_CreateCommand(ctx,"fork.exitcode", fork_exitcode,"",0,0,0) == REDISMODULE_ERR)
+        return REDISMODULE_ERR;
+
+    if (RedisModule_CreateCommand(ctx,"fork.kill", fork_kill,"",0,0,0) == REDISMODULE_ERR)
+        return REDISMODULE_ERR;
+
+    return REDISMODULE_OK;
+}
-- 
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