2 files changed, 105 insertions, 0 deletions
diff --git a/src/util/nscd.c b/src/util/nscd.c
new file mode 100644
index 00000000..b9f2ba88
--- /dev/null
+++ b/src/util/nscd.c
@@ -0,0 +1,97 @@
+/*
+   SSSD
+
+   nscd.c
+
+   Copyright (C) Jakub Hrozek <jhrozek@redhat.com>        2010
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <talloc.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include "config.h"
+#include "util/util.h"
+#include "tools/tools_util.h"
+
+#ifndef NSCD_RELOAD_ARG
+#define NSCD_RELOAD_ARG "-i"
+#endif
+
+#if defined(NSCD_PATH) && defined(HAVE_NSCD)
+int flush_nscd_cache(enum nscd_db flush_db)
+{
+    const char *service;
+    pid_t nscd_pid;
+    int ret, status;
+
+    switch(flush_db) {
+        case NSCD_DB_PASSWD:
+            service = "passwd";
+            break;
+
+        case NSCD_DB_GROUP:
+            service = "group";
+            break;
+
+        default:
+            DEBUG(1, ("Unknown nscd database\n"));
+            ret = EINVAL;
+            goto done;
+    }
+
+    nscd_pid = fork();
+    switch (nscd_pid) {
+    case 0:
+        execl(NSCD_PATH, "nscd", NSCD_RELOAD_ARG, service, NULL);
+        /* if this returns it is an error */
+        DEBUG(1, ("execl(3) failed: %d(%s)\n", errno, strerror(errno)));
+        exit(errno);
+    case -1:
+        DEBUG(1, ("fork failed\n"));
+        ret = EFAULT;
+        break;
+    default:
+        do {
+            errno = 0;
+            ret = waitpid(nscd_pid, &status, 0);
+        } while (ret == -1 && errno == EINTR);
+        if (ret > 0) {
+            if (WIFEXITED(status)) {
+                ret = WEXITSTATUS(status);
+                if (ret > 0) {
+                    /* The flush fails if nscd is not running, so do not care
+                    * about the return code */
+                    DEBUG(8, ("Error flushing cache, is nscd running?\n"));
+                }
+            }
+        } else {
+            DEBUG(5, ("Failed to wait for children %d\n", nscd_pid));
+            ret = EIO;
+        }
+    }
+
+done:
+    return ret;
+}
+
+#else   /* defined(NSCD_PATH) && defined(HAVE_NSCD) */
+int flush_nscd_cache(enum nscd_db flush_db)
+{
+    return EOK;
+}
+#endif
diff --git a/src/util/util.h b/src/util/util.h
index fa45fdfd..56653038 100644
--- a/src/util/util.h
+++ b/src/util/util.h
@@ -491,6 +491,14 @@ bool string_in_list(const char *string, char **list, bool case_sensitive);
  */
 void safezero(void *data, size_t size);
 
+/* from nscd.c */
+enum nscd_db {
+    NSCD_DB_PASSWD,
+    NSCD_DB_GROUP
+};
+
+int flush_nscd_cache(enum nscd_db flush_db);
+
 /* from sss_tc_utf8.c */
 char *
 sss_tc_utf8_str_tolower(TALLOC_CTX *mem_ctx, const char *s);