/core/10.4/fusefs/common/fuse_param.h

  1/*
  2 * Copyright (C) 2006-2008 Google. All Rights Reserved.
  3 * Amit Singh <singh@>
  4 */
  5
  6#ifndef _FUSE_PARAM_H_
  7#define _FUSE_PARAM_H_
  8
  9/* Compile-time tunables (M_MACFUSE*) */
 10
 11#define M_MACFUSE_ENABLE_FIFOFS            0
 12#define M_MACFUSE_ENABLE_INTERRUPT         1
 13#define M_MACFUSE_ENABLE_SPECFS            0
 14#define M_MACFUSE_ENABLE_TSLOCKING         0
 15#define M_MACFUSE_ENABLE_UNSUPPORTED       1
 16#define M_MACFUSE_ENABLE_XATTR             1
 17
 18#if M_MACFUSE_ENABLE_UNSUPPORTED
 19  #define M_MACFUSE_ENABLE_DSELECT         0
 20  #define M_MACFUSE_ENABLE_EXCHANGE        1
 21  #define M_MACFUSE_ENABLE_KQUEUE          1
 22  #define M_MACFUSE_ENABLE_KUNC            1
 23  #define M_MACFUSE_ENABLE_LOCKLOCAL       1
 24#endif
 25
 26/* User Control */
 27
 28#define MACFUSE_POSTUNMOUNT_SIGNAL         SIGKILL
 29
 30#define MACOSX_ADMIN_GROUP_NAME            "admin"
 31
 32#define SYSCTL_MACFUSE_TUNABLES_ADMIN      "macfuse.tunables.admin_group"
 33#define SYSCTL_MACFUSE_VERSION_NUMBER      "macfuse.version.number"
 34
 35/* Paths */
 36
 37#define MACFUSE_BUNDLE_PATH "/System/Library/Filesystems/fusefs.fs"
 38#define MACFUSE_KEXT        MACFUSE_BUNDLE_PATH "/Support/fusefs.kext"
 39#define MACFUSE_LOAD_PROG   MACFUSE_BUNDLE_PATH "/Support/load_fusefs"
 40#define MACFUSE_MOUNT_PROG  MACFUSE_BUNDLE_PATH "/Support/mount_fusefs"
 41#define SYSTEM_KEXTLOAD     "/sbin/kextload"
 42#define SYSTEM_KEXTUNLOAD   "/sbin/kextunload"
 43
 44/* Compatible API version */
 45
 46#define MACFUSE_MIN_USER_VERSION_MAJOR     7
 47#define MACFUSE_MIN_USER_VERSION_MINOR     5
 48
 49/* Device Interface */
 50
 51/*
 52 * This is the prefix ("fuse" by default) of the name of a FUSE device node
 53 * in devfs. The suffix is the device number. "/dev/fuse0" is the first FUSE
 54 * device by default. If you change the prefix from the default to something
 55 * else, the user-space FUSE library will need to know about it too.
 56 */
 57#define MACFUSE_DEVICE_BASENAME            "fuse"
 58
 59/*
 60 * This is the number of /dev/fuse<n> nodes we will create. <n> goes from
 61 * 0 to (FUSE_NDEVICES - 1).
 62 */
 63#define MACFUSE_NDEVICES                   24
 64
 65/*
 66 * This is the default block size of the virtual storage devices that are
 67 * implicitly implemented by the FUSE kernel extension. This can be changed
 68 * on a per-mount basis (there's one such virtual device for each mount).
 69 */
 70#define FUSE_DEFAULT_BLOCKSIZE             4096
 71
 72#define FUSE_MIN_BLOCKSIZE                 512
 73#define FUSE_MAX_BLOCKSIZE                 MAXPHYS
 74
 75#ifndef MAX_UPL_TRANSFER
 76#define MAX_UPL_TRANSFER 256
 77#endif
 78
 79/*
 80 * This is default I/O size used while accessing the virtual storage devices.
 81 * This can be changed on a per-mount basis.
 82 *
 83 * Nevertheless, the I/O size must be at least as big as the block size.
 84 */
 85#define FUSE_DEFAULT_IOSIZE                (16 * PAGE_SIZE)
 86
 87#define FUSE_MIN_IOSIZE                    512
 88#define FUSE_MAX_IOSIZE                    (MAX_UPL_TRANSFER * PAGE_SIZE)
 89
 90#define FUSE_DEFAULT_INIT_TIMEOUT                  10     /* s  */
 91#define FUSE_MIN_INIT_TIMEOUT                      1      /* s  */
 92#define FUSE_MAX_INIT_TIMEOUT                      300    /* s  */
 93#define FUSE_INIT_WAIT_INTERVAL                    100000 /* us */
 94
 95#define FUSE_INIT_TIMEOUT_DEFAULT_BUTTON_TITLE     "OK"
 96#define FUSE_INIT_TIMEOUT_NOTICE_MESSAGE                                  \
 97  "Timed out waiting for the file system to initialize. The volume has "  \
 98  "been ejected. You can use the init_timeout mount option to wait longer."
 99
100#define FUSE_DEFAULT_DAEMON_TIMEOUT                30     /* s */
101#define FUSE_MIN_DAEMON_TIMEOUT                    0      /* s */
102#define FUSE_MAX_DAEMON_TIMEOUT                    600    /* s */
103
104#define FUSE_DAEMON_TIMEOUT_DEFAULT_BUTTON_TITLE   "Keep Trying"
105#define FUSE_DAEMON_TIMEOUT_OTHER_BUTTON_TITLE     "Force Eject"
106#define FUSE_DAEMON_TIMEOUT_ALTERNATE_BUTTON_TITLE "Don't Warn Again"
107#define FUSE_DAEMON_TIMEOUT_ALERT_MESSAGE                                 \
108  "There was a timeout waiting for the file system to respond. You can "  \
109  "eject this volume immediately, but unsaved changes may be lost."
110#define FUSE_DAEMON_TIMEOUT_ALERT_TIMEOUT          120    /* s */
111
112#ifdef KERNEL
113
114/*
115 * This is the soft upper limit on the number of "request tickets" FUSE's
116 * user-kernel IPC layer can have for a given mount. This can be modified
117 * through the fuse.* sysctl interface.
118 */
119#define FUSE_DEFAULT_MAX_FREE_TICKETS      1024
120#define FUSE_DEFAULT_IOV_PERMANENT_BUFSIZE (1 << 19)
121#define FUSE_DEFAULT_IOV_CREDIT            16
122
123/* User-Kernel IPC Buffer */
124
125#define FUSE_MIN_USERKERNEL_BUFSIZE        (128  * 1024)
126#define FUSE_MAX_USERKERNEL_BUFSIZE        (4096 * 1024)
127
128#define FUSE_REASONABLE_XATTRSIZE          FUSE_MIN_USERKERNEL_BUFSIZE
129
130#endif /* KERNEL */
131
132#define FUSE_DEFAULT_USERKERNEL_BUFSIZE    (4096 * 1024)
133
134#define FUSE_LINK_MAX                      LINK_MAX
135#define FUSE_UIO_BACKUP_MAX                8
136
137#endif /* _FUSE_PARAM_H_ */