blob: 2f236a1528b4be8f54ae76f99b5b97b6dd68736e (
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--- a/util-linux/mount.c
+++ b/util-linux/mount.c
@@ -136,6 +136,10 @@
# include <rpc/pmap_clnt.h>
#endif
+#ifndef MS_UNION
+#define MS_UNION 0x100 /* 256: Mount on top of a union */
+#endif
+
#if defined(__dietlibc__)
// 16.12.2006, Sampo Kellomaki (sampo@iki.fi)
@@ -254,6 +258,7 @@ static const int32_t mount_options[] = {
/* "rslave" */ MS_SLAVE|MS_RECURSIVE,
/* "rprivate" */ MS_PRIVATE|MS_RECURSIVE,
/* "runbindable" */ MS_UNBINDABLE|MS_RECURSIVE,
+ /* "union" */ MS_UNION,
)
// Always understood.
@@ -310,6 +315,7 @@ static const char mount_option_str[] =
"make-rslave\0"
"make-rprivate\0"
"make-runbindable\0"
+ "make-union\0"
)
// Always understood.
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