| 1 | --- a/util-linux/mount.c |
| 2 | +++ b/util-linux/mount.c |
| 3 | @@ -69,6 +69,10 @@ |
| 4 | #define MS_DIRSYNC 128 // Directory modifications are synchronous |
| 5 | #endif |
| 6 | |
| 7 | +#ifndef MS_UNION |
| 8 | +#define MS_UNION 0x100 /* 256: Mount on top of a union */ |
| 9 | +#endif |
| 10 | + |
| 11 | |
| 12 | #if defined(__dietlibc__) |
| 13 | // 16.12.2006, Sampo Kellomaki (sampo@iki.fi) |
| 14 | @@ -185,6 +189,7 @@ static const int32_t mount_options[] = { |
| 15 | /* "rslave" */ MS_SLAVE|MS_RECURSIVE, |
| 16 | /* "rprivate" */ MS_SLAVE|MS_RECURSIVE, |
| 17 | /* "runbindable" */ MS_UNBINDABLE|MS_RECURSIVE, |
| 18 | + /* "union" */ MS_UNION, |
| 19 | ) |
| 20 | |
| 21 | // Always understood. |
| 22 | @@ -239,6 +244,7 @@ static const char mount_option_str[] = |
| 23 | "rslave\0" |
| 24 | "rprivate\0" |
| 25 | "runbindable\0" |
| 26 | + "union" "\0" |
| 27 | ) |
| 28 | |
| 29 | // Always understood. |
| 30 | |
