1 files changed, 120 insertions, 0 deletions
diff --git a/sbin/swapon/swapon.c b/sbin/swapon/swapon.c
new file mode 100644
index 0000000..577219d
--- /dev/null
+++ b/sbin/swapon/swapon.c
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 1980, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1980, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)swapon.c	8.1 (Berkeley) 6/5/93";
+#endif /* not lint */
+
+#include <fstab.h>
+#include <errno.h>
+#include <stdio.h>
+
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	extern char *optarg;
+	extern int optind;
+	register struct fstab *fsp;
+	register int stat;
+	int ch, doall;
+
+	doall = 0;
+	while ((ch = getopt(argc, argv, "a")) != EOF)
+		switch((char)ch) {
+		case 'a':
+			doall = 1;
+			break;
+		case '?':
+		default:
+			usage();
+		}
+	argv += optind;
+
+	stat = 0;
+	if (doall)
+		while (fsp = getfsent()) {
+			if (strcmp(fsp->fs_type, FSTAB_SW))
+				continue;
+			if (add(fsp->fs_spec, 1))
+				stat = 1;
+			else
+				printf("swapon: adding %s as swap device\n",
+				    fsp->fs_spec);
+		}
+	else if (!*argv)
+		usage();
+	for (; *argv; ++argv)
+		stat |= add(*argv, 0);
+	exit(stat);
+}
+
+add(name, ignoreebusy)
+	char *name;
+	int ignoreebusy;
+{
+	extern int errno;
+
+	if (swapon(name) == -1) {
+		switch (errno) {
+		case EINVAL:
+			fprintf(stderr, "swapon: %s: device not configured\n",
+			    name);
+			break;
+		case EBUSY:
+			if (!ignoreebusy)
+				fprintf(stderr,
+				    "swapon: %s: device already in use\n",
+				     name);
+			break;
+		default:
+			fprintf(stderr, "swapon: %s: ", name);
+			perror((char *)NULL);
+			break;
+		}
+		return(1);
+	}
+	return(0);
+}
+
+usage()
+{
+	fprintf(stderr, "usage: swapon [-a] [special_file ...]\n");
+	exit(1);
+}