1 files changed, 79 insertions, 0 deletions
diff --git a/libmisc/pwd_init.c b/libmisc/pwd_init.c
new file mode 100644
index 0000000..63c71e2
--- /dev/null
+++ b/libmisc/pwd_init.c
@@ -0,0 +1,79 @@
+/*
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1997       , Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2008       , Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include "defines.h"
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#ifdef HAVE_SYS_RESOURCE_H
+#include <sys/resource.h>
+#endif
+
+#include "prototypes.h"
+
+/*
+ * pwd_init - ignore signals, and set resource limits to safe
+ * values.  Call this before modifying password files, so that
+ * it is less likely to fail in the middle of operation.
+ */
+void pwd_init (void)
+{
+#ifdef HAVE_SYS_RESOURCE_H
+	struct rlimit rlim;
+
+#ifdef RLIMIT_CORE
+	rlim.rlim_cur = rlim.rlim_max = 0;
+	setrlimit (RLIMIT_CORE, &rlim);
+#endif
+	rlim.rlim_cur = rlim.rlim_max = RLIM_INFINITY;
+#ifdef RLIMIT_AS
+	setrlimit (RLIMIT_AS, &rlim);
+#endif
+#ifdef RLIMIT_CPU
+	setrlimit (RLIMIT_CPU, &rlim);
+#endif
+#ifdef RLIMIT_DATA
+	setrlimit (RLIMIT_DATA, &rlim);
+#endif
+#ifdef RLIMIT_FSIZE
+	setrlimit (RLIMIT_FSIZE, &rlim);
+#endif
+#ifdef RLIMIT_NOFILE
+	setrlimit (RLIMIT_NOFILE, &rlim);
+#endif
+#ifdef RLIMIT_RSS
+	setrlimit (RLIMIT_RSS, &rlim);
+#endif
+#ifdef RLIMIT_STACK
+	setrlimit (RLIMIT_STACK, &rlim);
+#endif
+#else				/* !HAVE_SYS_RESOURCE_H */
+	set_filesize_limit (30000);
+	/* don't know how to set the other limits... */
+#endif				/* !HAVE_SYS_RESOURCE_H */
+
+	signal (SIGALRM, SIG_IGN);
+	signal (SIGHUP, SIG_IGN);
+	signal (SIGINT, SIG_IGN);
+	signal (SIGPIPE, SIG_IGN);
+	signal (SIGQUIT, SIG_IGN);
+	signal (SIGTERM, SIG_IGN);
+#ifdef SIGTSTP
+	signal (SIGTSTP, SIG_IGN);
+#endif
+#ifdef SIGTTOU
+	signal (SIGTTOU, SIG_IGN);
+#endif
+
+	umask (077);
+}