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Diffstat (limited to 'mount/mount_types.h')
| -rw-r--r-- | mount/mount_types.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/mount/mount_types.h b/mount/mount_types.h new file mode 100644 index 00000000..f72d3a53 --- /dev/null +++ b/mount/mount_types.h @@ -0,0 +1,61 @@ +/* Exported types for the mount server + + Copyright (C) 1996 Free Software Foundation, Inc. + + Written by Miles Bader <miles@gnu.ai.mit.edu> + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2, or (at + your option) any later version. + + This program is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* Modes a particular mount may have. */ +#define MOUNT_READ 0x1 /* We only read. */ +#define MOUNT_WRITE 0x2 /* We write too. */ +#define MOUNT_FORCE 0x4 /* Used to try forcing a writable mount. */ + +/* The condition we think a file system is in (this refers to the permanent + storage from which it is backed, not an active file system). */ +enum mount_state +{ + MOUNT_STATE_UNKNOWN, /* Just so. When this value is passed to a + mount routine that takes a state argument, + it usually means `keep the last known + state'. */ + MOUNT_STATE_SUSPICIOUS, /* We think it may have been compromised. */ + MOUNT_STATE_DIRTY, /* May be transiently inconsistent. This is + the normal state for an active writable + file system. */ + MOUNT_STATE_CLEAN /* Peachy. */ +}; +typedef enum mount_state mount_state_t; /* For mig's use. */ + +/* How the key associated with a filesystem is interpreted. */ +enum mount_key_class +{ + MOUNT_KEY_UNKNOWN, /* */ + MOUNT_KEY_FILE, /* A file (including e.g., `/dev/rsd0a'). */ + MOUNT_KEY_DEVICE /* A mach device name. */ +}; +typedef enum mount_key_class mount_key_class_t; /* For mig's use. */ + +/* Types of multiple mounts of a single filesystem that are allowed. */ +enum mount_excl +{ + MOUNT_EXCL_NONE, /* Both multiple readers and multiple writers + allowed; some external private protocol + must be used to main consistency. */ + MOUNT_EXCL_WRITE, /* Multiple readers allowed, but if there's a + writer, it must be the only mount. */ + MOUNT_EXCL_RDWR /* Only a single mount of any type allowed. */ +}; +typedef enum mount_excl mount_excl_t; /* For mig */ |