fb72f180d5
the semantics in that the returned filename to use is now a kernel pointer rather than a user space pointer. This required changing the arguments to the CHECKALT*() macros some and changing the various system calls that used pathnames to use the kern_foo() functions that can accept kernel space filename pointers instead of calling the system call directly. - Use kern_open(), kern_stat(), kern_lstat(), kern_fstat(), kern_access(), kern_truncate(), kern_pathconf(), kern_execve(), kern_select(), kern_setitimer(), kern_getitimer(), kern_statfs(), and kern_fstatfs(). Silence on: alpha@
77 lines
2.5 KiB
C
77 lines
2.5 KiB
C
/*-
|
|
* Copyright (c) 1998-1999 Andrew Gallatin
|
|
* 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
|
|
* in this position and unchanged.
|
|
* 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. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/vm_param.h>
|
|
#include <vm/pmap.h>
|
|
|
|
|
|
#include <sys/exec.h>
|
|
#include <sys/sysent.h>
|
|
#include <sys/cdefs.h>
|
|
|
|
static __inline caddr_t stackgap_init(void);
|
|
static __inline void *stackgap_alloc(caddr_t *, size_t);
|
|
|
|
static __inline caddr_t
|
|
stackgap_init()
|
|
{
|
|
#define szsigcode (*(curproc->p_sysent->sv_szsigcode))
|
|
return (caddr_t)(((caddr_t)PS_STRINGS) - szsigcode - SPARE_USRSPACE);
|
|
}
|
|
|
|
static __inline void *
|
|
stackgap_alloc(sgp, sz)
|
|
caddr_t *sgp;
|
|
size_t sz;
|
|
{
|
|
void *p;
|
|
|
|
p = (void *) *sgp;
|
|
*sgp += ALIGN(sz);
|
|
return p;
|
|
}
|
|
|
|
|
|
int osf1_emul_find(struct thread *td, char *path, enum uio_seg pathseg,
|
|
char **pbuf, int create);
|
|
|
|
#define CHECKALT(td, upath, pathp, i) \
|
|
do { \
|
|
int _error; \
|
|
\
|
|
_error = osf1_emul_find(td, upath, UIO_USERSPACE, pathp, i); \
|
|
if (*(pathp) == NULL) \
|
|
return (_error); \
|
|
} while (0)
|
|
|
|
#define CHECKALTEXIST(td, upath, pathp) CHECKALT((td), (upath), (pathp), 0)
|
|
#define CHECKALTCREAT(td, upath, pathp) CHECKALT((td), (upath), (pathp), 1)
|