endpwent: Close all opened instances of /etc/passwd, including those used by getpwuid() and getpwnam()

kernel/src/trace/Resolve.cpp

@@ -7,7 +7,7 @@
 extern int kernel_start;
 extern int kernel_end;
 
-static InitRD::File symbol_map = {"", 0, 0, (void*)-1};
+static InitRD::File symbol_map = {"", 0, 0, (void*)-1, 0};
 
 static size_t symbol_strlen(const char* symbol)
 {

libs/libc/src/pwd.cpp

@@ -7,6 +7,8 @@
 #include <unistd.h>
 
 static FILE* pwd_file = nullptr;
+static FILE* pwnam_file = nullptr;
+static FILE* pwuid_file = nullptr;
 
 static int initialize_pwd(FILE** stream)
 {
@@ -126,7 +128,6 @@ extern "C"
 
     struct passwd* getpwnam(const char* name)
     {
-        static FILE* pwnam_file = nullptr;
         if (!pwnam_file)
         {
             if (!initialize_pwd(&pwnam_file)) return NULL;
@@ -149,7 +150,6 @@ extern "C"
 
     struct passwd* getpwuid(uid_t uid)
     {
-        static FILE* pwuid_file = nullptr;
         if (!pwuid_file)
         {
             if (!initialize_pwd(&pwuid_file)) return NULL;
@@ -182,5 +182,15 @@ extern "C"
             fclose(pwd_file);
             pwd_file = nullptr;
         }
+        if (pwuid_file)
+        {
+            fclose(pwuid_file);
+            pwuid_file = nullptr;
+        }
+        if (pwnam_file)
+        {
+            fclose(pwnam_file);
+            pwnam_file = nullptr;
+        }
     }
 }