Paul Gofman : taskkill: Enumerate processes in main().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: cf4a0b7392f33ba3e0b3fe69007a6d1f327f13f2
URL:    https://gitlab.winehq.org/wine/wine/-/commit/cf4a0b7392f33ba3e0b3fe69007a6d1...

Author: Paul Gofman 
Date:   Tue Mar 28 10:09:11 2023 -0600

taskkill: Enumerate processes in main().

---

programs/taskkill/taskkill.c | 38 +++++++++++++++-----------------------
 1 file changed, 15 insertions(+), 23 deletions(-)

diff --git a/programs/taskkill/taskkill.c b/programs/taskkill/taskkill.c
index ad5f8e389f7..595bfa659af 100644
--- a/programs/taskkill/taskkill.c
+++ b/programs/taskkill/taskkill.c
@@ -33,6 +33,8 @@ static BOOL force_termination = FALSE;
 static WCHAR **task_list;
 static unsigned int task_count;

+static DWORD *pid_list, pid_list_size;
+
 struct pid_close_info
 {
     DWORD pid;
@@ -123,20 +125,20 @@ static BOOL CALLBACK pid_enum_proc(HWND hwnd, LPARAM lParam)
     return TRUE;
 }

-static DWORD *enumerate_processes(DWORD *list_count)
+static BOOL enumerate_processes(void)
 {
-    DWORD *pid_list, alloc_bytes = 1024 * sizeof(*pid_list), needed_bytes;
+    DWORD alloc_bytes = 1024 * sizeof(*pid_list), needed_bytes;

pid_list = malloc(alloc_bytes);
     if (!pid_list)
-        return NULL;
+        return FALSE;

for (;;)
     {
         DWORD *realloc_list;

if (!EnumProcesses(pid_list, alloc_bytes, &needed_bytes))
-            return NULL;
+            return FALSE;

/* EnumProcesses can't signal an insufficient buffer condition, so the
          * only way to possibly determine whether a larger buffer is required
@@ -149,12 +151,12 @@ static DWORD *enumerate_processes(DWORD *list_count)
         alloc_bytes *= 2;
         realloc_list = realloc(pid_list, alloc_bytes);
         if (!realloc_list)
-            return NULL;
+            return FALSE;
         pid_list = realloc_list;
     }

-    *list_count = needed_bytes / sizeof(*pid_list);
-    return pid_list;
+    pid_list_size = needed_bytes / sizeof(*pid_list);
+    return TRUE;
 }

static BOOL get_process_name_from_pid(DWORD pid, WCHAR *buf, DWORD chars)
@@ -199,18 +201,10 @@ static BOOL get_process_name_from_pid(DWORD pid, WCHAR *buf, DWORD chars)
  * system processes. */
 static int send_close_messages(void)
 {
-    DWORD *pid_list, pid_list_size;
     DWORD self_pid = GetCurrentProcessId();
     unsigned int i;
     int status_code = 0;

-    pid_list = enumerate_processes(&pid_list_size);
-    if (!pid_list)
-    {
-        taskkill_message(STRING_ENUM_FAILED);
-        return 1;
-    }
-
     for (i = 0; i < task_count; i++)
     {
         WCHAR *p = task_list[i];
@@ -287,18 +281,10 @@ static int send_close_messages(void)

static int terminate_processes(void)
 {
-    DWORD *pid_list, pid_list_size;
     DWORD self_pid = GetCurrentProcessId();
     unsigned int i;
     int status_code = 0;

-    pid_list = enumerate_processes(&pid_list_size);
-    if (!pid_list)
-    {
-        taskkill_message(STRING_ENUM_FAILED);
-        return 1;
-    }
-
     for (i = 0; i < task_count; i++)
     {
         WCHAR *p = task_list[i];
@@ -510,6 +496,12 @@ int __cdecl wmain(int argc, WCHAR *argv[])
     if (!process_arguments(argc, argv))
         return 1;

+    if (!enumerate_processes())
+    {
+        taskkill_message(STRING_ENUM_FAILED);
+        return 1;
+    }
+
     if (force_termination)
         return terminate_processes();
     return send_close_messages();