diff options
Diffstat (limited to 'utils/mount/mount_constants.h')
| -rw-r--r-- | utils/mount/mount_constants.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/utils/mount/mount_constants.h b/utils/mount/mount_constants.h new file mode 100644 index 0000000..4d050d8 --- /dev/null +++ b/utils/mount/mount_constants.h @@ -0,0 +1,71 @@ +#ifndef _NFS_UTILS_MOUNT_CONSTANTS_H +#define _NFS_UTILS_MOUNT_CONSTANTS_H + +#ifndef MS_DIRSYNC +#define MS_DIRSYNC 128 /* Directory modifications are synchronous */ +#endif + +#ifndef MS_ACTION_MASK +#define MS_ACTION_MASK 0x380 +/* Remount, but new filesystem may be different from old. Atomic + (i.e. there is no interval when nothing is mounted at the mountpoint). + If new fs differs from the old one and old is busy - -EBUSY. */ +#define MS_REPLACE 0x080 /* 128 */ +/* After, Before: as soon as we get unions these will add a new member + in the end or beginning of the chain. Fail if there is a stack + on the mountpoint. */ +#define MS_AFTER 0x100 /* 256 */ +#define MS_BEFORE 0x180 +/* Over: if nothing mounted on a mountpoint - same as if none of these +flags had been set; if we have a union with more than one element - fail; +if we have a stack or plain mount - mount atop of it, forming a stack. */ +#define MS_OVER 0x200 /* 512 */ +#endif +#ifndef MS_NOATIME +#define MS_NOATIME 0x400 /* 1024: Do not update access times. */ +#endif +#ifndef MS_NODIRATIME +#define MS_NODIRATIME 0x800 /* 2048: Don't update directory access times */ +#endif +#ifndef MS_BIND +#define MS_BIND 0x1000 /* 4096: Mount existing tree also elsewhere */ +#endif +#ifndef MS_MOVE +#define MS_MOVE 0x2000 /* 8192: Atomically move tree */ +#endif +#ifndef MS_REC +#define MS_REC 0x4000 /* 16384: Recursive loopback */ +#endif +#ifndef MS_VERBOSE +#define MS_VERBOSE 0x8000 /* 32768 */ +#endif +#ifndef MS_RELATIME +#define MS_RELATIME 0x200000 /* 200000: Update access times relative + to mtime/ctime */ +#endif +/* + * NFS fs-specific mount option flags + * + * MS_DUMMY is assigned to mount options that are not to be + * passed to the kernel via the "flags" argument. These are + * generally ignored or handled entirely in user space. + */ +#define MS_DUMMY 0x00000000 +#define MS_USERS 0x40000000 +#define MS_USER 0x80000000 + +/* + * Magic mount flag number. Had to be or-ed to the flag values. + */ +#ifndef MS_MGC_VAL +#define MS_MGC_VAL 0xC0ED0000 /* magic flag number to indicate "new" flags */ +#endif +#ifndef MS_MGC_MSK +#define MS_MGC_MSK 0xffff0000 /* magic flag number mask */ +#endif + +/* Generic options that are prevented from appearing + * in the options field in /etc/mtab. */ +#define MS_NOMTAB (MS_REMOUNT) + +#endif /* _NFS_UTILS_MOUNT_CONSTANTS_H */ |