a95edcba94
- Return NULL instead of returning memory outside of the stackgap in stackgap_alloc() (FreeBSD-SA-00:42.linux) - Check for stackgap_alloc() returning NULL in ibcs2_emul_find(); other calls to stackgap_alloc() have not been changed since they are small fixed-size allocations. - Replace use of strcpy() with strlcpy() in exec_coff_imgact() to avoid buffer overflow - Use strlcat() instead of strcat() to avoid a one byte buffer overflow in ibcs2_setipdomainname() - Use copyinstr() instead of copyin() in ibcs2_setipdomainname() to ensure that the string is null-terminated - Avoid integer overflow in ibcs2_setgroups() and ibcs2_setgroups() by checking that gidsetsize argument is non-negative and no larger than NGROUPS_MAX. - Range-check signal numbers in ibcs2_wait(), ibcs2_sigaction(), ibcs2_sigsys() and ibcs2_kill() to avoid accessing array past the end (or before the start)
100 lines
3.0 KiB
C
100 lines
3.0 KiB
C
|
|
/*
|
|
* Copyright (c) 1994 Christos Zoulas
|
|
* Copyright (c) 1995 Frank van der Linden
|
|
* Copyright (c) 1995 Scott Bartram
|
|
* 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. 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.
|
|
*
|
|
* from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp
|
|
* from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* This file is pretty much the same as Christos' svr4_util.h
|
|
* (for now).
|
|
*/
|
|
|
|
#ifndef _IBCS2_UTIL_H_
|
|
#define _IBCS2_UTIL_H_
|
|
|
|
/*
|
|
* XXX the inlines have obnoxious prerequisites, only some of which are
|
|
* included here.
|
|
*/
|
|
#include <vm/vm.h>
|
|
#include <vm/pmap.h>
|
|
#include <machine/vmparam.h>
|
|
#include <sys/exec.h>
|
|
#include <sys/sysent.h>
|
|
#include <sys/proc.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 (*(curthread->td_proc->p_sysent->sv_szsigcode))
|
|
return (caddr_t)(PS_STRINGS - szsigcode - SPARE_USRSPACE);
|
|
}
|
|
|
|
static __inline void *
|
|
stackgap_alloc(sgp, sz)
|
|
caddr_t *sgp;
|
|
size_t sz;
|
|
{
|
|
void *p = (void *) *sgp;
|
|
sz = ALIGN(sz);
|
|
if (*sgp + sz > (caddr_t)(PS_STRINGS - szsigcode))
|
|
return NULL;
|
|
*sgp += sz;
|
|
return p;
|
|
}
|
|
|
|
#ifdef DEBUG_IBCS2
|
|
#define DPRINTF(a) printf a;
|
|
#else
|
|
#define DPRINTF(a)
|
|
#endif
|
|
|
|
extern const char ibcs2_emul_path[];
|
|
|
|
int ibcs2_emul_find(struct thread *, caddr_t *, const char *, char *,
|
|
char **, int);
|
|
|
|
#define CHECKALTEXIST(p, sgp, path) \
|
|
ibcs2_emul_find(td, sgp, ibcs2_emul_path, path, &(path), 0)
|
|
|
|
#define CHECKALTCREAT(p, sgp, path) \
|
|
ibcs2_emul_find(td, sgp, ibcs2_emul_path, path, &(path), 1)
|
|
|
|
#ifdef SPX_HACK
|
|
int spx_open(struct thread *td, void *uap);
|
|
#endif
|
|
|
|
#endif /* !_IBCS2_UTIL_H_ */
|