diff options
| -rw-r--r-- | lib/libspl/include/sys/mount.h | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/lib/libspl/include/sys/mount.h b/lib/libspl/include/sys/mount.h index 9eb893fe6..d4ac6a958 100644 --- a/lib/libspl/include/sys/mount.h +++ b/lib/libspl/include/sys/mount.h @@ -55,7 +55,22 @@ #define MS_OWNER 0x10000000 #define MS_GROUP 0x08000000 #define MS_COMMENT 0x02000000 -#define MS_FORCE MNT_FORCE -#define MS_DETACH MNT_DETACH + +/* + * Older glibc <sys/mount.h> headers did not define all the available + * umount2(2) flags. Both MNT_FORCE and MNT_DETACH are supported in the + * kernel back to 2.4.11 so we define them correctly if they are missing. + */ +#ifdef MNT_FORCE +# define MS_FORCE MNT_FORCE +#else +# define MS_FORCE 0x00000001 +#endif /* MNT_FORCE */ + +#ifdef MNT_DETACH +# define MS_DETACH MNT_DETACH +#else +# define MS_DETACH 0x00000002 +#endif /* MNT_DETACH */ #endif /* _LIBSPL_SYS_MOUNT_H */ |