Move rtems/freebsd to freebsd and contrib to freebsd/contrib

1 files changed, 145 insertions, 0 deletions

diff --git a/freebsd/sys/filedesc.h b/freebsd/sys/filedesc.h
new file mode 100644
index 00000000..ee26a1bf
--- /dev/null
+++ b/freebsd/sys/filedesc.h
@@ -0,0 +1,145 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)filedesc.h	8.1 (Berkeley) 6/2/93
+ * $FreeBSD$
+ */
+
+#ifndef _SYS_FILEDESC_HH_
+#define	_SYS_FILEDESC_HH_
+
+#include <rtems/freebsd/sys/queue.h>
+#include <rtems/freebsd/sys/event.h>
+#include <rtems/freebsd/sys/lock.h>
+#include <rtems/freebsd/sys/priority.h>
+#include <rtems/freebsd/sys/sx.h>
+
+#include <rtems/freebsd/machine/_limits.h>
+
+/*
+ * This structure is used for the management of descriptors.  It may be
+ * shared by multiple processes.
+ */
+#define NDSLOTTYPE	u_long
+
+struct filedesc {
+	struct	file **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 */
+	struct	vnode *fd_jdir;		/* jail root directory */
+	int	fd_nfiles;		/* number of open files allocated */
+	NDSLOTTYPE *fd_map;		/* bitmap of free fds */
+	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;		/* thread reference count */
+	u_short	fd_holdcnt;		/* hold count on structure + mutex */
+	struct	sx fd_sx;		/* protects members of this struct */
+	struct	kqlist fd_kqlist;	/* list of kqueues on this filedesc */
+	int	fd_holdleaderscount;	/* block fdfree() for shared close() */
+	int	fd_holdleaderswakeup;	/* fdfree() needs wakeup */
+};
+
+/*
+ * Structure to keep track of (process leader, struct fildedesc) tuples.
+ * Each process has a pointer to such a structure when detailed tracking
+ * is needed, e.g., when rfork(RFPROC | RFMEM) causes a file descriptor
+ * table to be shared by processes having different "p_leader" pointers
+ * and thus distinct POSIX style locks.
+ *
+ * fdl_refcount and fdl_holdcount are protected by struct filedesc mtx.
+ */
+struct filedesc_to_leader {
+	int		fdl_refcount;	/* references from struct proc */
+	int		fdl_holdcount;	/* temporary hold during closef */
+	int		fdl_wakeup;	/* fdfree() waits on closef() */
+	struct proc	*fdl_leader;	/* owner of POSIX locks */
+	/* Circular list: */
+	struct filedesc_to_leader *fdl_prev;
+	struct filedesc_to_leader *fdl_next;
+};
+
+/*
+ * Per-process open flags.
+ */
+#define	UF_EXCLOSE 	0x01		/* auto-close on exec */
+
+#ifdef _KERNEL
+
+/* Lock a file descriptor table. */
+#define	FILEDESC_LOCK_INIT(fdp)	sx_init(&(fdp)->fd_sx, "filedesc structure")
+#define	FILEDESC_LOCK_DESTROY(fdp)	sx_destroy(&(fdp)->fd_sx)
+#define	FILEDESC_LOCK(fdp)	(&(fdp)->fd_sx)
+#define	FILEDESC_XLOCK(fdp)	sx_xlock(&(fdp)->fd_sx)
+#define	FILEDESC_XUNLOCK(fdp)	sx_xunlock(&(fdp)->fd_sx)
+#define	FILEDESC_SLOCK(fdp)	sx_slock(&(fdp)->fd_sx)
+#define	FILEDESC_SUNLOCK(fdp)	sx_sunlock(&(fdp)->fd_sx)
+
+#define	FILEDESC_LOCK_ASSERT(fdp)	sx_assert(&(fdp)->fd_sx, SX_LOCKED | \
+					    SX_NOTRECURSED)
+#define	FILEDESC_XLOCK_ASSERT(fdp)	sx_assert(&(fdp)->fd_sx, SX_XLOCKED | \
+					    SX_NOTRECURSED)
+
+struct thread;
+
+int	closef(struct file *fp, struct thread *td);
+int	dupfdopen(struct thread *td, struct filedesc *fdp, int indx, int dfd,
+	    int mode, int error);
+int	falloc(struct thread *td, struct file **resultfp, int *resultfd);
+int	fdalloc(struct thread *td, int minfd, int *result);
+int	fdavail(struct thread *td, int n);
+int	fdcheckstd(struct thread *td);
+void	fdclose(struct filedesc *fdp, struct file *fp, int idx, struct thread *td);
+void	fdcloseexec(struct thread *td);
+struct	filedesc *fdcopy(struct filedesc *fdp);
+void	fdunshare(struct proc *p, struct thread *td);
+void	fdfree(struct thread *td);
+struct	filedesc *fdinit(struct filedesc *fdp);
+struct	filedesc *fdshare(struct filedesc *fdp);
+struct filedesc_to_leader *
+	filedesc_to_leader_alloc(struct filedesc_to_leader *old,
+	    struct filedesc *fdp, struct proc *leader);
+int	getvnode(struct filedesc *fdp, int fd, struct file **fpp);
+void	mountcheckdirs(struct vnode *olddp, struct vnode *newdp);
+void	setugidsafety(struct thread *td);
+
+/* Return a referenced file from an unlocked descriptor. */
+struct file *fget_unlocked(struct filedesc *fdp, int fd);
+
+/* Requires a FILEDESC_{S,X}LOCK held and returns without a ref. */
+static __inline struct file *
+fget_locked(struct filedesc *fdp, int fd)
+{
+
+	return (fd < 0 || fd >= fdp->fd_nfiles ? NULL : fdp->fd_ofiles[fd]);
+}
+
+#endif /* _KERNEL */
+
+#endif /* !_SYS_FILEDESC_HH_ */