FreeBSD/Linux Kernel Cross Reference
sys/compat/linux/linux_util.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.c,v 1.5 1995/01/22 23:44:50 christos Exp
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD: releng/6.1/sys/compat/linux/linux_util.c 142939 2005-03-01 17:57:45Z jhb $");
    
    #include <sys/param.h>
    #include <sys/lock.h>
    #include <sys/malloc.h>
    #include <sys/mutex.h>
    #include <sys/namei.h>
    #include <sys/proc.h>
    #include <sys/syscallsubr.h>
    #include <sys/systm.h>
    #include <sys/vnode.h>
    
    #include <machine/stdarg.h>
    
    #include <compat/linux/linux_util.h>
    
    const char      linux_emul_path[] = "/compat/linux";
    
    /*
     * Search an alternate path before passing pathname arguments on
     * to system calls. Useful for keeping a separate 'emulation tree'.
     *
     * If cflag is set, we check if an attempt can be made to create
     * the named file, i.e. we check if the directory it should
     * be in exists.
     */
    int
    linux_emul_convpath(td, path, pathseg, pbuf, cflag)
            struct thread    *td;
            char             *path;
            enum uio_seg      pathseg;
            char            **pbuf;
            int               cflag;
    {
    
            return (kern_alternate_path(td, linux_emul_path, path, pathseg, pbuf,
                    cflag));
    }
    
    void
    linux_msg(const struct thread *td, const char *fmt, ...)
    {
            va_list ap;
            struct proc *p;
    
            p = td->td_proc;
            printf("linux: pid %d (%s): ", (int)p->p_pid, p->p_comm);
            va_start(ap, fmt);
            vprintf(fmt, ap);
            va_end(ap);
            printf("\n");
    }

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