xnu-2782.1.97.tar.gz

[apple/xnu.git] / bsd / sys / mount_internal.h

diff --git a/bsd/sys/mount_internal.h b/bsd/sys/mount_internal.h
index f246bc0778c3ba12c42e4e4e5a8822e670723a20..965d0a6309c9d8f82f3f2c1caa12463a857d6ced 100644 (file)
--- a/bsd/sys/mount_internal.h
+++ b/bsd/sys/mount_internal.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2011 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2014 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -84,6 +84,7 @@
 #include <sys/vfs_context.h>           /* XXX for AF_MAX */
 #include <sys/mount.h>
 #include <sys/cdefs.h>
+#include <sys/sysctl.h>
 
 struct label;
 
@@ -203,6 +204,8 @@ struct mount {
  */
 #define MNT_IOFLAGS_FUA_SUPPORTED      0x00000001
 #define MNT_IOFLAGS_UNMAP_SUPPORTED    0x00000002
+#define MNT_IOFLAGS_IOSCHED_SUPPORTED  0x00000004
+#define MNT_IOFLAGS_CSUNMAP_SUPPORTED  0x00000008
 
 /*
  * ioqueue depth for devices that don't report one
@@ -228,6 +231,7 @@ extern struct mount * dead_mountp;
  *             because the bits here were broken out from the high bits
  *             of the mount flags.
  */
+#define MNTK_SWAP_MOUNT                0x00000100      /* we are swapping to this mount */
 #define MNTK_DENY_READDIREXT 0x00000200 /* Deny Extended-style readdir's for this volume */
 #define MNTK_PERMIT_UNMOUNT    0x00000400      /* Allow (non-forced) unmounts by UIDs other than the one that mounted the volume */
 #ifdef NFSCLIENT
@@ -253,7 +257,6 @@ extern struct mount * dead_mountp;
 #if REV_ENDIAN_FS
 #define MNT_REVEND             0x08000000      /* Reverse endian FS */
 #endif /* REV_ENDIAN_FS */
-#define MNTK_FRCUNMOUNT                0x10000000      /* Forced unmount wanted. */
 #define MNTK_AUTH_OPAQUE        0x20000000      /* authorisation decisions are not made locally */
 #define MNTK_AUTH_OPAQUE_ACCESS 0x40000000      /* VNOP_ACCESS is reliable for remote auth */
 #define MNTK_EXTENDED_SECURITY 0x80000000      /* extended security supported */
@@ -267,6 +270,7 @@ extern struct mount * dead_mountp;
 #define MNT_LWAIT              0x00000040      /* wait for unmount op */
 #define MNT_LITERWAIT          0x00000080      /* mount in iteration */
 #define MNT_LDEAD              0x00000100      /* mount already unmounted*/
+#define MNT_LNOSUB             0x00000200      /* submount - no recursion */
 
 
 /*
@@ -302,6 +306,7 @@ struct vfstable {
        int             vfc_vfsflags;   /* for optional types */
        void *          vfc_descptr;    /* desc table allocated address */
        int                     vfc_descsize;   /* size allocated for desc table */
+       struct sysctl_oid       *vfc_sysctl;    /* dynamically registered sysctl node */
 };
 
 /* vfc_vfsflags: */
@@ -316,12 +321,16 @@ struct vfstable {
 #define        VFC_VFSVNOP_PAGEINV2    0x2000
 #define        VFC_VFSVNOP_PAGEOUTV2   0x4000
 #define        VFC_VFSVNOP_NOUPDATEID_RENAME   0x8000
+#if CONFIG_SECLUDED_RENAME
+#define VFC_VFSVNOP_SECLUDE_RENAME     0x10000
+#endif
 
 
-extern int maxvfsconf;         /* highest defined filesystem type */
+extern int maxvfstypenum;              /* highest defined filesystem type */
 extern struct vfstable  *vfsconf;      /* head of list of filesystem types */
-extern int maxvfsslots;                /* Maximum slots available to be used */
-extern int numused_vfsslots;   /* number of slots already used */
+extern const int maxvfsslots;          /* Maximum statically allocated slots available to be used */
+extern int numused_vfsslots;   /* number of statically allocated slots already used */
+extern int numregistered_fses; /* number of total registered filesystems */
 
 /* the following two are xnu private */
 struct vfstable *      vfstable_add(struct     vfstable *);
@@ -426,6 +435,7 @@ int vfs_mountroot(void);
 void   vfs_unmountall(void);
 int    safedounmount(struct mount *, int, vfs_context_t);
 int    dounmount(struct mount *, int, int, vfs_context_t);
+void   dounmount_submounts(struct mount *, int, vfs_context_t);
 
 /* xnu internal api */
 void  mount_dropcrossref(mount_t, vnode_t, int);
@@ -447,7 +457,7 @@ void mount_set_noreaddirext (mount_t);
 /* Private NFS spi */
 #define KERNEL_MOUNT_NOAUTH            0x01 /* Don't check the UID of the directory we are mounting on */
 #define KERNEL_MOUNT_PERMIT_UNMOUNT    0x02 /* Allow (non-forced) unmounts by users other the one who mounted the volume */
-#if NFSCLIENT
+#if NFSCLIENT || DEVFS
 /*
  * NOTE: kernel_mount() does not force MNT_NOSUID, MNT_NOEXEC, or MNT_NODEC for non-privileged
  * mounting credentials, as the mount(2) system call does.
@@ -468,11 +478,18 @@ int  throttle_get_passive_io_policy(struct uthread **ut);
 int  throttle_io_will_be_throttled(int lowpri_window_msecs, mount_t mp);
 void *throttle_info_update_by_mount(mount_t mp);
 void rethrottle_thread(uthread_t ut);
+void throttle_info_reset_window(uthread_t ut);
+
 
 /* throttled I/O helper function */
 /* convert the lowest bit to a device index */
 extern int num_trailing_0(uint64_t n);
 
+/* sync lock */
+extern lck_mtx_t * sync_mtx_lck;
+
+extern int sync_timeout;
+
 __END_DECLS
 
 #endif /* !_SYS_MOUNT_INTERNAL_H_ */