vnode_open
Open a file identified by a path--roughly speaking an in-kernel open(2).
Declaration
errno_t vnode_open(const char *path, int fmode, int cmode, int flags, vnode_t *vpp, vfs_context_t ctx);Parameters
- path:
Path to look up.
- fmode:
e.g. O_NONBLOCK, O_APPEND; see bsd/sys/fcntl.h.
- cmode:
Permissions with which to create file if it does not exist.
- flags:
Same as vnode_lookup().
- vpp:
Destination for vnode.
- ctx:
Context with which to authorize open/creation.
Return Value
0 for success or an error code.
Discussion
If vnode_open() succeeds, it returns with both an iocount and a usecount on the returned vnode. These must be released eventually; the iocount should be released with vnode_put() as soon as any initial operations on the vnode are over, whereas the usecount should be released via vnode_close().
See Also
vnode
vnop_access_descvnop_advlock_descvnop_allocate_descvnop_blktooff_descvnop_blockmap_descvnop_bwrite_descvnop_clonefile_descvnop_close_descvnop_copyfile_descvnop_create_descvnop_default_descvnop_exchange_descvnop_fsync_descvnop_getattr_descvnop_getattrlistbulk_descvnop_getxattr_descvnop_inactive_descvnop_ioctl_descvnop_kqfilt_add_descvnop_kqfilt_remove_descvnop_link_descvnop_listxattr_descvnop_lookup_descvnop_mkdir_descvnop_mknod_descvnop_mmap_check_descvnop_mmap_descvnop_mnomap_descvnop_offtoblk_descvnop_open_descvnop_pagein_descvnop_pageout_descvnop_pathconf_descvnop_print_descvnop_read_descvnop_readdir_descvnop_readdirattr_descvnop_readlink_descvnop_reclaim_descvnop_remove_descvnop_removexattr_descvnop_rename_descvnop_renamex_descvnop_revoke_descvnop_rmdir_descvnop_searchfs_descvnop_select_descvnop_setattr_descvnop_setlabel_descvnop_setxattr_descvnop_strategy_descvnop_symlink_descvnop_truncate_descvnop_whiteout_descvnop_write_descvnode_addfsrefvnode_authattrvnode_authattr_newvnode_authorizevnode_clearautocandidatevnode_cleardirtyvnode_clearfastdevicecandidatevnode_clearfsnodevnode_clearmountedonvnode_clearnocachevnode_clearnoreadaheadvnode_closevnode_createvnode_fsnodevnode_getvnode_get_va_fsidvnode_getattrvnode_getbackingvnodevnode_getnamevnode_getparentvnode_getwithrefvnode_getwithvidvnode_hascleanblksvnode_hasdirtyblksvnode_isautocandidatevnode_isblkvnode_ischrvnode_isdirvnode_isdirtyvnode_isfastdevicecandidatevnode_isfifovnode_isinusevnode_islnkvnode_ismountvnode_ismountedonvnode_isnamedstreamvnode_isnocachevnode_isnoreadaheadvnode_isonexternalstoragevnode_isragevnode_isrecycledvnode_isregvnode_isswapvnode_issystemvnode_isvrootvnode_iteratevnode_lookupvnode_mountvnode_mountedherevnode_needssnapshotsvnode_notifyvnode_putvnode_putnamevnode_recyclevnode_refvnode_relevnode_removefsrefvnode_setattrvnode_setautocandidatevnode_setdirtyvnode_setfastdevicecandidatevnode_setmountedonvnode_setmultipathvnode_setnocachevnode_setnoreadaheadvnode_settagvnode_specrdevvnode_startwritevnode_tagvnode_uncache_credentialsvnode_update_identityvnode_vfs64bitreadyvnode_vfsisrdonlyvnode_vfsmaxsymlenvnode_vfsnamevnode_vfstypenumvnode_vidvnode_vtypevnode_waitforwritesvnode_writedonevnode_attrvnode_fsparamvnode_tvnodeopv_descvnodeopv_entry_descvnop_access_argsvnop_advlock_argsvnop_allocate_argsvnop_blktooff_argsvnop_blockmap_argsvnop_bwrite_argsvnop_clonefile_argsvnop_close_argsvnop_copyfile_argsvnop_create_argsvnop_exchange_argsvnop_fsync_argsvnop_generic_argsvnop_getattr_argsvnop_getattrlistbulk_argsvnop_getxattr_argsvnop_inactive_argsvnop_ioctl_argsvnop_kqfilt_add_argsvnop_kqfilt_remove_argsvnop_link_argsvnop_listxattr_argsvnop_lookup_argsvnop_mkdir_argsvnop_mknod_argsvnop_mmap_argsvnop_mmap_check_argsvnop_mnomap_argsvnop_offtoblk_argsvnop_open_argsvnop_pagein_argsvnop_pageout_argsvnop_pathconf_argsvnop_read_argsvnop_readdir_argsvnop_readdirattr_argsvnop_readlink_argsvnop_reclaim_argsvnop_remove_argsvnop_removexattr_argsvnop_rename_argsvnop_renamex_argsvnop_revoke_argsvnop_rmdir_argsvnop_searchfs_argsvnop_select_argsvnop_setattr_argsvnop_setlabel_argsvnop_setxattr_argsvnop_strategy_argsvnop_symlink_argsvnop_whiteout_argsvnop_write_args