c87b5f76aa
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_access(), kern_msgctl(), kern_execve(), kern_mkfifo(), kern_mknod(), kern_statfs(), kern_fstatfs(), kern_setitimer(), kern_stat(), kern_lstat(), kern_fstat(), kern_utimes(), kern_pathconf(), and kern_unlink().
89 lines
2.8 KiB
C
89 lines
2.8 KiB
C
/*-
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* Copyright (c) 1998 Mark Newton
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* Copyright (c) 1994 Christos Zoulas
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SVR4_UTIL_H_
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#define _SVR4_UTIL_H_
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/*#include <compat/common/compat_util.h>*/
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/pmap.h>
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#include <machine/vmparam.h>
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#include <sys/exec.h>
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#include <sys/sysent.h>
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#include <sys/cdefs.h>
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#include <sys/uio.h>
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#ifdef DEBUG_SVR4
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#define DPRINTF(a) uprintf a;
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#else
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#define DPRINTF(a)
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#endif
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static __inline caddr_t stackgap_init(void);
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static __inline void *stackgap_alloc(caddr_t *, size_t);
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static __inline caddr_t
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stackgap_init()
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{
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#define szsigcode (*(curthread->td_proc->p_sysent->sv_szsigcode))
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return (caddr_t)(((caddr_t)PS_STRINGS) - szsigcode - SPARE_USRSPACE);
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}
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static __inline void *
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stackgap_alloc(sgp, sz)
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caddr_t *sgp;
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size_t sz;
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{
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void *p = (void *) *sgp;
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sz = ALIGN(sz);
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if (*sgp + sz > (caddr_t)(PS_STRINGS - szsigcode))
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return NULL;
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*sgp += sz;
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return p;
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}
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int svr4_emul_find(struct thread *, char *, enum uio_seg, char **, int);
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#define CHECKALT(td, upath, pathp, i) \
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do { \
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int _error; \
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\
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_error = svr4_emul_find(td, upath, UIO_USERSPACE, pathp, i); \
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if (*(pathp) == NULL) \
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return (_error); \
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} while (0)
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#define CHECKALTEXIST(td, upath, pathp) CHECKALT(td, upath, pathp, 0)
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#define CHECKALTCREAT(td, upath, pathp) CHECKALT(td, upath, pathp, 1)
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#endif /* !_SVR4_UTIL_H_ */
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