mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-16 10:20:30 +00:00
Purge crmbuf.c as the routines are now in uipc_mbuf.c.
Reviewed by: sam Sponsored by: spc.org
This commit is contained in:
parent
37621fd5d9
commit
458a88207a
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=123558
@ -1,119 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2002 Somebody. 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.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include "opt_param.h"
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/mbuf.h>
|
||||
#include <sys/kernel.h>
|
||||
|
||||
/*
|
||||
* Miscellaneous mbuf routines that belong in uipc_mbuf.c but
|
||||
* are kept private to the crypto support for now.
|
||||
*/
|
||||
extern int m_apply(struct mbuf *m, int off, int len,
|
||||
int (*f)(caddr_t, caddr_t, unsigned int), caddr_t fstate);
|
||||
extern struct mbuf * m_getptr(struct mbuf *m, int loc, int *off);
|
||||
|
||||
/*
|
||||
* Apply function f to the data in an mbuf chain starting "off" bytes from the
|
||||
* beginning, continuing for "len" bytes.
|
||||
*/
|
||||
int
|
||||
m_apply(struct mbuf *m, int off, int len, int (*f)(caddr_t, caddr_t, unsigned int), caddr_t fstate)
|
||||
{
|
||||
int rval;
|
||||
unsigned int count;
|
||||
|
||||
if (len < 0)
|
||||
panic("m_apply: len %d < 0", len);
|
||||
if (off < 0)
|
||||
panic("m_apply: off %d < 0", off);
|
||||
while (off > 0) {
|
||||
if (m == NULL)
|
||||
panic("m_apply: null mbuf in skip");
|
||||
if (off < m->m_len)
|
||||
break;
|
||||
off -= m->m_len;
|
||||
m = m->m_next;
|
||||
}
|
||||
while (len > 0) {
|
||||
if (m == NULL)
|
||||
panic("m_apply: null mbuf");
|
||||
count = min(m->m_len - off, len);
|
||||
|
||||
rval = f(fstate, mtod(m, caddr_t) + off, count);
|
||||
if (rval)
|
||||
return (rval);
|
||||
|
||||
len -= count;
|
||||
off = 0;
|
||||
m = m->m_next;
|
||||
}
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
/*
|
||||
* Return a pointer to mbuf/offset of location in mbuf chain.
|
||||
*/
|
||||
struct mbuf *
|
||||
m_getptr(struct mbuf *m, int loc, int *off)
|
||||
{
|
||||
while (loc >= 0) {
|
||||
/* Normal end of search */
|
||||
if (m->m_len > loc) {
|
||||
*off = loc;
|
||||
return (m);
|
||||
}
|
||||
else {
|
||||
loc -= m->m_len;
|
||||
|
||||
if (m->m_next == NULL) {
|
||||
if (loc == 0) {
|
||||
/* Point at the end of valid data */
|
||||
*off = m->m_len;
|
||||
return (m);
|
||||
}
|
||||
else
|
||||
return (NULL);
|
||||
}
|
||||
else
|
||||
m = m->m_next;
|
||||
}
|
||||
}
|
||||
|
||||
return (NULL);
|
||||
}
|
Loading…
Reference in New Issue
Block a user