revert 759711 and 759713... don't require apr2

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@760026 13f79535-47bb-0310-9956-ffa450edef68

os/unix/unixd.c

@@ -26,7 +26,6 @@
 #include "apr_thread_proc.h"
 #include "apr_strings.h"
 #include "apr_portable.h"
-#include "apr_perms_set.h"
 #ifdef HAVE_PWD_H
 #include <pwd.h>
 #endif
@@ -209,19 +208,71 @@ AP_DECLARE(apr_status_t) ap_os_create_privileged_process(
                                               attr, ugid, p);
 }
 
+/* XXX move to APR and externalize (but implement differently :) ) */
+static apr_lockmech_e proc_mutex_mech(apr_proc_mutex_t *pmutex)
+{
+    const char *mechname = apr_proc_mutex_name(pmutex);
+
+    if (!strcmp(mechname, "sysvsem")) {
+        return APR_LOCK_SYSVSEM;
+    }
+    else if (!strcmp(mechname, "flock")) {
+        return APR_LOCK_FLOCK;
+    }
+    return APR_LOCK_DEFAULT;
+}
+
 AP_DECLARE(apr_status_t) ap_unixd_set_proc_mutex_perms(apr_proc_mutex_t *pmutex)
 {
-    apr_status_t rv = APR_SUCCESS;
     if (!geteuid()) {
-        rv = APR_PERMS_SET_FN(proc_mutex)(pmutex,
+        apr_lockmech_e mech = proc_mutex_mech(pmutex);
-                                          APR_FPROT_UWRITE | APR_FPROT_UREAD,
+
-                                          ap_unixd_config.user_id,
+        switch(mech) {
-                                          ap_unixd_config.group_id);
+#if APR_HAS_SYSVSEM_SERIALIZE
-        if (rv == APR_ENOTIMPL) {
+        case APR_LOCK_SYSVSEM:
-            rv = APR_SUCCESS;
+        {
+            apr_os_proc_mutex_t ospmutex;
+#if !APR_HAVE_UNION_SEMUN
+            union semun {
+                long val;
+                struct semid_ds *buf;
+                unsigned short *array;
+            };
+#endif
+            union semun ick;
+            struct semid_ds buf;
+
+            apr_os_proc_mutex_get(&ospmutex, pmutex);
+            buf.sem_perm.uid = ap_unixd_config.user_id;
+            buf.sem_perm.gid = ap_unixd_config.group_id;
+            buf.sem_perm.mode = 0600;
+            ick.buf = &buf;
+            if (semctl(ospmutex.crossproc, 0, IPC_SET, ick) < 0) {
+                return errno;
             }
         }
-    return rv;
+        break;
+#endif
+#if APR_HAS_FLOCK_SERIALIZE
+        case APR_LOCK_FLOCK:
+        {
+            const char *lockfile = apr_proc_mutex_lockfile(pmutex);
+
+            if (lockfile) {
+                if (chown(lockfile, ap_unixd_config.user_id,
+                          -1 /* no gid change */) < 0) {
+                    return errno;
+                }
+            }
+        }
+        break;
+#endif
+        default:
+            /* do nothing */
+            break;
+        }
+    }
+    return APR_SUCCESS;
 }
 
 AP_DECLARE(apr_status_t) ap_unixd_set_global_mutex_perms(apr_global_mutex_t *gmutex)