X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/39236c6e673c41db228275375ab7fdb0f837b292..813fb2f63a553c957e917ede5f119b021d6ce391:/bsd/sys/mount_internal.h diff --git a/bsd/sys/mount_internal.h b/bsd/sys/mount_internal.h index f246bc077..6393fd712 100644 --- 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) 2000-2016 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * @@ -84,6 +84,7 @@ #include /* XXX for AF_MAX */ #include #include +#include struct label; @@ -132,10 +133,12 @@ struct mount { uint32_t mnt_ioqueue_depth; /* the maxiumum number of commands a device can accept */ uint32_t mnt_ioscale; /* scale the various throttles/limits imposed on the amount of I/O in flight */ uint32_t mnt_ioflags; /* flags for underlying device */ + uint32_t mnt_minsaturationbytecount; /* if non-zero, mininum amount of writes (in bytes) needed to max out throughput */ pending_io_t mnt_pending_write_size __attribute__((aligned(sizeof(pending_io_t)))); /* byte count of pending writes */ pending_io_t mnt_pending_read_size __attribute__((aligned(sizeof(pending_io_t)))); /* byte count of pending reads */ struct timeval mnt_last_write_issued_timestamp; struct timeval mnt_last_write_completed_timestamp; + int64_t mnt_max_swappin_available; lck_rw_t mnt_rwlock; /* mutex readwrite lock */ lck_mtx_t mnt_renamelock; /* mutex that serializes renames that change shape of tree */ @@ -190,6 +193,10 @@ struct mount { */ int mnt_authcache_ttl; char fstypename_override[MFSTYPENAMELEN]; + + uint32_t mnt_iobufinuse; + + lck_mtx_t mnt_iter_lock; /* mutex that protects iteration of vnodes */ }; /* @@ -203,17 +210,16 @@ 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 +#define MNT_IOFLAGS_SWAPPIN_SUPPORTED 0x00000010 +#define MNT_IOFLAGS_FUSION_DRIVE 0x00000020 /* * ioqueue depth for devices that don't report one */ #define MNT_DEFAULT_IOQUEUE_DEPTH 32 - -/* XXX 3762912 hack to support HFS filesystem 'owner' */ -#define vfs_setowner(_mp, _uid, _gid) do {(_mp)->mnt_fsowner = (_uid); (_mp)->mnt_fsgroup = (_gid); } while (0) - - /* mount point to which dead vps point to */ extern struct mount * dead_mountp; @@ -228,6 +234,8 @@ extern struct mount * dead_mountp; * because the bits here were broken out from the high bits * of the mount flags. */ +#define MNTK_NOSWAP 0x00000080 /* swap files cannot be used on this mount */ +#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 @@ -251,11 +259,11 @@ extern struct mount * dead_mountp; #define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */ #define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */ #if REV_ENDIAN_FS -#define MNT_REVEND 0x08000000 /* Reverse 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_DIR_HARDLINKS 0x10000000 /* mounted file system supports directory hard links */ +#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 */ #define MNT_LNOTRESP 0x00000001 /* mount not responding */ @@ -265,8 +273,9 @@ extern struct mount * dead_mountp; #define MNT_LITER 0x00000010 /* mount in iteration */ #define MNT_LNEWVN 0x00000020 /* mount has new vnodes created */ #define MNT_LWAIT 0x00000040 /* wait for unmount op */ -#define MNT_LITERWAIT 0x00000080 /* mount in iteration */ +#define MNT_LUNUSED 0x00000080 /* available flag bit, used to be MNT_LITERWAIT */ #define MNT_LDEAD 0x00000100 /* mount already unmounted*/ +#define MNT_LNOSUB 0x00000200 /* submount - no recursion */ /* @@ -302,13 +311,14 @@ 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: */ #define VFC_VFSLOCALARGS 0x002 #define VFC_VFSGENERICARGS 0x004 #define VFC_VFSNATIVEXATTR 0x010 -#define VFC_VFSDIRLINKS 0x020 +#define VFC_VFSCANMOUNTROOT 0x020 #define VFC_VFSPREFLIGHT 0x040 #define VFC_VFSREADDIR_EXTENDED 0x080 #define VFC_VFS64BITREADY 0x100 @@ -316,12 +326,13 @@ struct vfstable { #define VFC_VFSVNOP_PAGEINV2 0x2000 #define VFC_VFSVNOP_PAGEOUTV2 0x4000 #define VFC_VFSVNOP_NOUPDATEID_RENAME 0x8000 +#define VFC_VFSVNOP_SECLUDE_RENAME 0x10000 - -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 *); @@ -413,6 +424,8 @@ void mount_lock_destroy(mount_t); void mount_lock(mount_t); void mount_lock_spin(mount_t); void mount_unlock(mount_t); +void mount_iterate_lock(mount_t); +void mount_iterate_unlock(mount_t); void mount_lock_renames(mount_t); void mount_unlock_renames(mount_t); void mount_ref(mount_t, int); @@ -426,6 +439,7 @@ 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); @@ -439,15 +453,12 @@ void mount_iterdrop(mount_t); void mount_iterdrain(mount_t); void mount_iterreset(mount_t); -/* tags a volume as not supporting extended readdir for NFS exports */ -#ifdef BSD_KERNEL_PRIVATE -void mount_set_noreaddirext (mount_t); -#endif - /* 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 +/* used by snapshot mounting SPI */ +#define KERNEL_MOUNT_SNAPSHOT 0x04 /* Mounting a snapshot */ +#if NFSCLIENT || DEVFS || ROUTEFS /* * 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. @@ -456,23 +467,23 @@ int kernel_mount(char *, vnode_t, vnode_t, const char *, void *, size_t, int, ui boolean_t vfs_iskernelmount(mount_t); #endif -/* throttled I/O api */ - -/* returned by throttle_io_will_be_throttled */ -#define THROTTLE_DISENGAGED 0 -#define THROTTLE_ENGAGED 1 -#define THROTTLE_NOW 2 +/* Throttled I/O API. KPI/SPI is in systm.h. */ int throttle_get_io_policy(struct uthread **ut); 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); + /* 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_ */