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-rw-r--r--util-linux/swaponoff.c51
1 files changed, 50 insertions, 1 deletions
diff --git a/util-linux/swaponoff.c b/util-linux/swaponoff.c
index 6713852e5..0a2d23f50 100644
--- a/util-linux/swaponoff.c
+++ b/util-linux/swaponoff.c
@@ -7,6 +7,47 @@
* Licensed under GPLv2, see file LICENSE in this source tree.
*/
+//config:config SWAPON
+//config: bool "swapon"
+//config: default y
+//config: select PLATFORM_LINUX
+//config: help
+//config: This option enables the 'swapon' utility.
+//config: Once you have created some swap space using 'mkswap', you also need
+//config: to enable your swap space with the 'swapon' utility. The 'swapoff'
+//config: utility is used, typically at system shutdown, to disable any swap
+//config: space. If you are not using any swap space, you can leave this
+//config: option disabled.
+//config:
+//config:config FEATURE_SWAPON_DISCARD
+//config: bool "Support discard option -d"
+//config: default y
+//config: depends on SWAPON
+//config: help
+//config: Enable support for discarding swap area blocks at swapon and/or as
+//config: the kernel frees them. This option enables both the -d option on
+//config: 'swapon' and the 'discard' option for swap entries in /etc/fstab.
+//config:
+//config:config FEATURE_SWAPON_PRI
+//config: bool "Support priority option -p"
+//config: default y
+//config: depends on SWAPON
+//config: help
+//config: Enable support for setting swap device priority in swapon.
+//config:
+//config:config SWAPOFF
+//config: bool "swapoff"
+//config: default y
+//config: select PLATFORM_LINUX
+//config: help
+//config: This option enables the 'swapoff' utility.
+
+//applet:IF_SWAPON(APPLET_ODDNAME(swapon, swap_on_off, BB_DIR_SBIN, BB_SUID_DROP, swapon))
+//applet:IF_SWAPOFF(APPLET_ODDNAME(swapoff, swap_on_off, BB_DIR_SBIN, BB_SUID_DROP, swapoff))
+
+//kbuild:lib-$(CONFIG_SWAPON) += swaponoff.o
+//kbuild:lib-$(CONFIG_SWAPOFF) += swaponoff.o
+
//usage:#define swapon_trivial_usage
//usage: "[-a] [-e]" IF_FEATURE_SWAPON_DISCARD(" [-d[POL]]") IF_FEATURE_SWAPON_PRI(" [-p PRI]") " [DEVICE]"
//usage:#define swapon_full_usage "\n\n"
@@ -74,7 +115,15 @@ struct globals {
#endif
#define INIT_G() do { setup_common_bufsiz(); } while (0)
-#define do_swapoff (applet_name[5] == 'f')
+#if ENABLE_SWAPOFF
+# if ENABLE_SWAPON
+# define do_swapoff (applet_name[5] == 'f')
+# else
+# define do_swapoff 1
+# endif
+#else
+# define do_swapoff 0
+#endif
/* Command line options */
enum {