X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/1c79356b52d46aa6b508fb032f5ae709b1f2897b..a1c7dba18ef36983396c282fe85292db066e39db:/bsd/sys/filedesc.h diff --git a/bsd/sys/filedesc.h b/bsd/sys/filedesc.h index a0f0bc75a..b5b80a6bc 100644 --- a/bsd/sys/filedesc.h +++ b/bsd/sys/filedesc.h @@ -1,23 +1,29 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2012 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. * - * @APPLE_LICENSE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* Copyright (c) 1995, 1997 Apple Computer, Inc. All Rights Reserved */ /* @@ -58,6 +64,8 @@ #ifndef _SYS_FILEDESC_H_ #define _SYS_FILEDESC_H_ +#include + /* * This structure is used for the management of descriptors. It may be * shared by multiple processes. @@ -75,24 +83,49 @@ #define NDFILE 25 /* 125 bytes */ #define NDEXTENT 50 /* 250 bytes in 256-byte alloc. */ +#ifdef BSD_KERNEL_PRIVATE + +struct klist; + struct filedesc { - struct file **fd_ofiles; /* file structures for open files */ + struct fileproc **fd_ofiles; /* file structures for open files */ char *fd_ofileflags; /* per-process open file flags */ struct vnode *fd_cdir; /* current directory */ struct vnode *fd_rdir; /* root directory */ int fd_nfiles; /* number of open files allocated */ - u_short fd_lastfile; /* high-water mark of fd_ofiles */ - u_short fd_freefile; /* approx. next free file */ + int fd_lastfile; /* high-water mark of fd_ofiles */ + int fd_freefile; /* approx. next free file */ u_short fd_cmask; /* mask for file creation */ - u_short fd_refcnt; /* reference count */ + int fd_knlistsize; /* size of knlist */ + struct klist *fd_knlist; /* list of attached knotes */ + u_long fd_knhashmask; /* size of knhash */ + struct klist *fd_knhash; /* hash table for attached knotes */ + int fd_flags; }; +/* + * definitions for fd_flags; + */ +#define FD_CHROOT 0x01 /* process was chrooted... keep track even */ + /* if we're force unmounted and unable to */ + /* take a vnode_ref on fd_rdir during a fork */ + /* * Per-process open flags. */ -#define UF_EXCLOSE 0x01 /* auto-close on exec */ -#define UF_MAPPED 0x02 /* mapped from device */ +#define UF_EXCLOSE 0x01 /* auto-close on exec */ +#define UF_FORKCLOSE 0x02 /* auto-close on fork */ #define UF_RESERVED 0x04 /* open pending / in progress */ +#define UF_CLOSING 0x08 /* close in progress */ + +#ifdef KERNEL +#define UF_RESVWAIT 0x10 /* close in progress */ +#define UF_INHERIT 0x20 /* "inherit-on-exec" */ + +#define UF_VALID_FLAGS \ + (UF_EXCLOSE | UF_FORKCLOSE | UF_RESERVED | UF_CLOSING |\ + UF_RESVWAIT | UF_INHERIT) +#endif /* KERNEL */ /* * Storage required per open file descriptor. @@ -103,23 +136,30 @@ struct filedesc { /* * Kernel global variables and routines. */ -extern int dupfdopen __P((struct filedesc *fdp, - int indx, int dfd, int mode, int error)); -extern int fdalloc __P((struct proc *p, int want, int *result)); -extern void fdrelse __P((struct proc *p, int fd)); -extern int fdavail __P((struct proc *p, int n)); -extern int fdgetf __P((struct proc *p, int fd, struct file **resultfp)); +extern int dupfdopen(struct filedesc *fdp, + int indx, int dfd, int mode, int error); +extern int fdalloc(proc_t p, int want, int *result); +extern void fdrelse(proc_t p, int fd); +extern int fdavail(proc_t p, int n); #define fdfile(p, fd) \ (&(p)->p_fd->fd_ofiles[(fd)]) #define fdflags(p, fd) \ (&(p)->p_fd->fd_ofileflags[(fd)]) -extern int falloc __P((struct proc *p, - struct file **resultfp, int *resultfd)); -extern void ffree __P((struct file *fp)); -extern struct filedesc *fdcopy __P((struct proc *p)); -extern void fdfree __P((struct proc *p)); -extern void fdexec __P((struct proc *p)); +extern int falloc(proc_t p, struct fileproc **resultfp, int *resultfd, vfs_context_t ctx); + +#ifdef __APPLE_API_PRIVATE +typedef struct fileproc *(*fp_allocfn_t)(void *); +extern int falloc_withalloc(proc_t p, struct fileproc **resultfp, + int *resultfd, vfs_context_t ctx, + fp_allocfn_t fp_zalloc, void *crarg); + +extern struct filedesc *fdcopy(proc_t p, struct vnode *uth_cdir); +extern void fdfree(proc_t p); +extern void fdexec(proc_t p, short flags); +#endif /* __APPLE_API_PRIVATE */ #endif /* KERNEL */ +#endif /* BSD_KERNEL_PRIVATE */ + #endif /* !_SYS_FILEDESC_H_ */