118 lines
3.3 KiB
C
118 lines
3.3 KiB
C
/*-
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* Copyright (c) 1994 Christos Zoulas
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* Copyright (c) 1995 Frank van der Linden
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* Copyright (c) 1995 Scott Bartram
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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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* from: svr4_util.c,v 1.5 1995/01/22 23:44:50 christos Exp
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <sys/namei.h>
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#include <sys/proc.h>
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#include <sys/syscallsubr.h>
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#include <sys/systm.h>
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#include <sys/vnode.h>
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#include <machine/stdarg.h>
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#include <compat/linux/linux_util.h>
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const char linux_emul_path[] = "/compat/linux";
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/*
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* Search an alternate path before passing pathname arguments on
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* to system calls. Useful for keeping a separate 'emulation tree'.
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*
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* If cflag is set, we check if an attempt can be made to create
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* the named file, i.e. we check if the directory it should
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* be in exists.
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*/
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int
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linux_emul_find(td, sgp, path, pbuf, cflag)
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struct thread *td;
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caddr_t *sgp; /* Pointer to stackgap memory */
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char *path;
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char **pbuf;
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int cflag;
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{
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char *newpath;
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size_t sz;
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int error;
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error = linux_emul_convpath(td, path, (sgp == NULL) ? UIO_SYSSPACE :
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UIO_USERSPACE, &newpath, cflag);
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if (newpath == NULL)
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return (error);
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if (sgp == NULL) {
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*pbuf = newpath;
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return (error);
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}
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sz = strlen(newpath);
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*pbuf = stackgap_alloc(sgp, sz + 1);
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if (*pbuf != NULL)
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error = copyout(newpath, *pbuf, sz + 1);
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else
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error = ENAMETOOLONG;
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free(newpath, M_TEMP);
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return (error);
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}
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int
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linux_emul_convpath(td, path, pathseg, pbuf, cflag)
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struct thread *td;
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char *path;
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enum uio_seg pathseg;
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char **pbuf;
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int cflag;
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{
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return (kern_alternate_path(td, linux_emul_path, path, pathseg, pbuf,
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cflag));
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}
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void
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linux_msg(const struct thread *td, const char *fmt, ...)
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{
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va_list ap;
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struct proc *p;
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p = td->td_proc;
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printf("linux: pid %d (%s): ", (int)p->p_pid, p->p_comm);
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va_start(ap, fmt);
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vprintf(fmt, ap);
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va_end(ap);
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printf("\n");
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}
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