/*
- * Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * @APPLE_LICENSE_HEADER_START@
- *
* 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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
+ * 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.
+ *
+ * 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,
* 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 */
/*
*/
#ifndef _SYS_FILEDESC_H_
-#define _SYS_FILEDESC_H_
+#define _SYS_FILEDESC_H_
#include <sys/appleapiopts.h>
-#ifdef __APPLE_API_UNSTABLE
/*
* This structure is used for the management of descriptors. It may be
* shared by multiple processes.
* should be selected to be the biggest multiple of OFILESIZE (see below)
* that will fit in a power-of-two sized piece of memory.
*/
-#define NDFILE 25 /* 125 bytes */
-#define NDEXTENT 50 /* 250 bytes in 256-byte alloc. */
+#define NDFILE 25 /* 125 bytes */
+#define NDEXTENT 50 /* 250 bytes in 256-byte alloc. */
+
+#ifdef BSD_KERNEL_PRIVATE
+
+#include <kern/locks.h>
struct klist;
+struct kqlist;
struct filedesc {
- 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 */
- u_short fd_cmask; /* mask for file creation */
- u_short fd_refcnt; /* reference count */
-
+ struct fileproc **fd_ofiles; /* file structures for open files */
+ lck_mtx_t fd_kqhashlock; /* lock for dynamic kqueue hash */
+ u_long fd_kqhashmask; /* size of dynamic kqueue hash */
+ struct kqlist *fd_kqhash; /* hash table for dynamic kqueues */
+ struct kqueue *fd_wqkqueue; /* the workq kqueue */
+ 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 */
+ int fd_lastfile; /* high-water mark of fd_ofiles */
+ int fd_freefile; /* approx. next free file */
+ u_short fd_cmask; /* mask for file creation */
+ int fd_flags;
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;
+ lck_mtx_t fd_knhashlock; /* lock for hash table for attached knotes */
};
/*
* definitions for fd_flags;
*/
-#define FD_CHROOT 0x01 /* process was chrooted... keep track even */
+#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 */
+#define FD_WORKLOOP 0x02 /* process has created a kqworkloop that */
+ /* requires manual cleanup on exit */
+
/*
* Per-process open flags.
*/
-#define UF_EXCLOSE 0x01 /* auto-close on exec */
-#define UF_RESERVED 0x04 /* open pending / in progress */
-#define UF_CLOSING 0x08 /* close in progress */
+#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.
/*
* Kernel global variables and routines.
*/
-extern int dupfdopen(struct filedesc *fdp,
- int indx, int dfd, int mode, int error);
-extern int fdalloc(struct proc *p, int want, int *result);
-extern void fdrelse(struct proc *p, int fd);
-extern int fdavail(struct proc *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(struct proc *p,
- struct fileproc **resultfp, int *resultfd);
-extern void ffree(struct file *fp);
+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)])
+
+/*
+ * Accesor macros for fd flags
+ */
+#define FDFLAGS_GET(p, fd) (*fdflags(p, fd) & (UF_EXCLOSE|UF_FORKCLOSE))
+#define FDFLAGS_SET(p, fd, bits) \
+ (*fdflags(p, fd) |= ((bits) & (UF_EXCLOSE|UF_FORKCLOSE)))
+#define FDFLAGS_CLR(p, fd, bits) \
+ (*fdflags(p, fd) &= ~((bits) & (UF_EXCLOSE|UF_FORKCLOSE)))
+
+extern int falloc(proc_t p, struct fileproc **resultfp, int *resultfd, vfs_context_t ctx);
#ifdef __APPLE_API_PRIVATE
-extern struct filedesc *fdcopy(struct proc *p);
-extern void fdfree(struct proc *p);
-extern void fdexec(struct proc *p);
+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, int self_exec);
#endif /* __APPLE_API_PRIVATE */
#endif /* KERNEL */
-#endif /* __APPLE_API_UNSTABLE */
+#endif /* BSD_KERNEL_PRIVATE */
#endif /* !_SYS_FILEDESC_H_ */
projects / apple / xnu.git / blobdiff