#include <sys/cdefs.h>
#include "opt_zero.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/limits.h>
#include <sys/lock.h>
#include <sys/mman.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/resourcevar.h>
#include <sys/sched.h>
#include <sys/sysctl.h>
#include <sys/vnode.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/vm_extern.h>
#include <vm/vm_page.h>
#include <vm/vm_map.h>

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Macros
#define	PHYS_PAGE_COUNT(len) (howmany(len, PAGE_SIZE) + 1)

Functions
	__FBSDID ("$BSDSUniX$")

	SYSCTL_INT (_kern, KERN_IOV_MAX, iov_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, UIO_MAXIOV,"Maximum number of elements in an I/O vector; sysconf(_SC_IOV_MAX)")

static int	uiomove_faultflag (void cp, int n, struct uio uio, int nofault)

int	copyin_nofault (const void udaddr, void kaddr, size_t len)

int	copyout_nofault (const void kaddr, void udaddr, size_t len)

int	physcopyin (void *src, vm_paddr_t dst, size_t len)

int	physcopyout (vm_paddr_t src, void *dst, size_t len)

int	uiomove (void cp, int n, struct uio uio)

int	uiomove_nofault (void cp, int n, struct uio uio)

int	uiomove_frombuf (void buf, int buflen, struct uio uio)

int	ureadc (int c, struct uio *uio)

int	copyinfrom (const void __restrict src, void __restrict dst, size_t len, int seg)

int	copyinstrfrom (const void __restrict src, void __restrict dst, size_t len, size_t *__restrict copied, int seg)

int	copyiniov (struct iovec iovp, u_int iovcnt, struct iovec *iov, int error)

int	copyinuio (struct iovec iovp, u_int iovcnt, struct uio *uiop)

struct uio *	cloneuio (struct uio *uiop)

int	copyout_map (struct thread td, vm_offset_t addr, size_t sz)

int	copyout_unmap (struct thread *td, vm_offset_t addr, size_t sz)

Macro Definition Documentation

#define PHYS_PAGE_COUNT ( len ) (howmany(len, PAGE_SIZE) + 1)

Definition at line 155 of file subr_uio.c.

Referenced by physcopyin(), and physcopyout().

Function Documentation

__FBSDID ( "$BSDSUniX$" )

struct uio* cloneuio ( struct uio * uiop )

Definition at line 544 of file subr_uio.c.

References malloc().

Referenced by dofileread(), dofilewrite(), kern_recvit(), kern_sendit(), log_console(), sys_kevent(), sys_sctp_generic_recvmsg(), and vn_io_fault().

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int copyin_nofault	(	const void *	udaddr,
		void *	kaddr,
		size_t	len
	)

Definition at line 134 of file subr_uio.c.

int copyinfrom	(	const void *__restrict	src,
		void *__restrict	dst,
		size_t	len,
		int	seg
	)

Definition at line 452 of file subr_uio.c.

References panic().

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int copyiniov	(	struct iovec *	iovp,
		u_int	iovcnt,
		struct iovec **	iov,
		int	error
	)

Definition at line 490 of file subr_uio.c.

References free(), and malloc().

Referenced by sys_recvmsg(), sys_sctp_generic_recvmsg(), sys_sctp_generic_sendmsg_iov(), and sys_sendmsg().

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int copyinstrfrom	(	const void *__restrict	src,
		void *__restrict	dst,
		size_t	len,
		size_t *__restrict	copied,
		int	seg
	)

Definition at line 471 of file subr_uio.c.

References panic().

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int copyinuio	(	struct iovec *	iovp,
		u_int	iovcnt,
		struct uio **	uiop
	)

Definition at line 508 of file subr_uio.c.

References free(), and malloc().

Referenced by do_sendfile(), sys_jail_get(), sys_jail_set(), sys_nmount(), sys_preadv(), sys_pwritev(), sys_readv(), and sys_writev().

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int copyout_map	(	struct thread *	td,
		vm_offset_t *	addr,
		size_t	sz
	)

Definition at line 562 of file subr_uio.c.

References lim_max().

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int copyout_nofault	(	const void *	kaddr,
		void *	udaddr,
		size_t	len
	)

Definition at line 145 of file subr_uio.c.

Referenced by sysctl_old_user().

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int copyout_unmap	(	struct thread *	td,
		vm_offset_t	addr,
		size_t	sz
	)

Definition at line 591 of file subr_uio.c.

int physcopyin	(	void *	src,
		vm_paddr_t	dst,
		size_t	len
	)

Definition at line 158 of file subr_uio.c.

References PHYS_PAGE_COUNT.

int physcopyout	(	vm_paddr_t	src,
		void *	dst,
		size_t	len
	)

Definition at line 179 of file subr_uio.c.

References PHYS_PAGE_COUNT.

SYSCTL_INT	(	_kern	,
		KERN_IOV_MAX	,
		iov_max	,
		CTLFLAG_RD	,
		SYSCTL_NULL_INT_PTR	,
		UIO_MAXIOV	,
		"Maximum number of elements in an I/O vector; sysconf(_SC_IOV_MAX)"
	)

int uiomove	(	void *	cp,
		int	n,
		struct uio *	uio
	)

Definition at line 202 of file subr_uio.c.

References uiomove_faultflag().

Referenced by devread(), log_console(), logread(), m_mbuftouio(), m_uiotombuf(), pipe_read(), pipe_write(), ptsdev_write(), sbuf_uionew(), soreceive_dgram(), soreceive_generic(), soreceive_rcvoob(), ttydisc_getc_uio(), ttydisc_write(), ttyinq_read_uio(), ttyoutq_read_uio(), uiomove_frombuf(), vfs_read_dirent(), vn_io_fault(), and vn_io_fault_uiomove().

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static int uiomove_faultflag	(	void *	cp,
		int	n,
		struct uio *	uio,
		int	nofault
	)

static

Definition at line 216 of file subr_uio.c.

References maybe_yield().

Referenced by uiomove(), and uiomove_nofault().

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int uiomove_frombuf	(	void *	buf,
		int	buflen,
		struct uio *	uio
	)

Definition at line 296 of file subr_uio.c.

References uiomove().

Referenced by mqfs_read().

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int uiomove_nofault	(	void *	cp,
		int	n,
		struct uio *	uio
	)

Definition at line 209 of file subr_uio.c.

References uiomove_faultflag().

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int ureadc	(	int	c,
		struct uio *	uio
	)

Definition at line 411 of file subr_uio.c.

References panic().

Referenced by ptsdev_read().

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Macros

Functions

Macro Definition Documentation

Function Documentation