The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/compat/linux/linux_util.h

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    1 /*-
    2  * Copyright (c) 1994 Christos Zoulas
    3  * Copyright (c) 1995 Frank van der Linden
    4  * Copyright (c) 1995 Scott Bartram
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. The name of the author may not be used to endorse or promote products
   16  *    derived from this software without specific prior written permission
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   28  *
   29  * from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp
   30  * from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp
   31  * $FreeBSD: releng/8.1/sys/compat/linux/linux_util.h 191877 2009-05-07 10:01:05Z dchagin $
   32  */
   33 
   34 /*
   35  * This file is pretty much the same as Christos' svr4_util.h
   36  * (for now).
   37  */
   38 
   39 #ifndef _LINUX_UTIL_H_
   40 #define _LINUX_UTIL_H_
   41 
   42 #include <vm/vm.h>
   43 #include <vm/vm_param.h>
   44 #include <vm/pmap.h>
   45 #include <machine/vmparam.h>
   46 #include <sys/exec.h>
   47 #include <sys/sysent.h>
   48 #include <sys/syslog.h>
   49 #include <sys/cdefs.h>
   50 #include <sys/uio.h>
   51 
   52 extern const char linux_emul_path[];
   53 
   54 int linux_emul_convpath(struct thread *, const char *, enum uio_seg, char **, int, int);
   55 
   56 #define LCONVPATH_AT(td, upath, pathp, i, dfd)                          \
   57         do {                                                            \
   58                 int _error;                                             \
   59                                                                         \
   60                 _error = linux_emul_convpath(td, upath, UIO_USERSPACE,  \
   61                     pathp, i, dfd);                                     \
   62                 if (*(pathp) == NULL)                                   \
   63                         return (_error);                                \
   64         } while (0)
   65 
   66 #define LCONVPATH(td, upath, pathp, i)  \
   67    LCONVPATH_AT(td, upath, pathp, i, AT_FDCWD)
   68 
   69 #define LCONVPATHEXIST(td, upath, pathp) LCONVPATH(td, upath, pathp, 0)
   70 #define LCONVPATHEXIST_AT(td, upath, pathp, dfd) LCONVPATH_AT(td, upath, pathp, 0, dfd)
   71 #define LCONVPATHCREAT(td, upath, pathp) LCONVPATH(td, upath, pathp, 1)
   72 #define LCONVPATHCREAT_AT(td, upath, pathp, dfd) LCONVPATH_AT(td, upath, pathp, 1, dfd)
   73 #define LFREEPATH(path) free(path, M_TEMP)
   74 
   75 #define DUMMY(s)                                                        \
   76 int                                                                     \
   77 linux_ ## s(struct thread *td, struct linux_ ## s ## _args *args)       \
   78 {                                                                       \
   79         static pid_t pid;                                               \
   80                                                                         \
   81         if (pid != td->td_proc->p_pid) {                                \
   82                 linux_msg(td, "syscall %s not implemented", #s);        \
   83                 pid = td->td_proc->p_pid;                               \
   84         };                                                              \
   85         return (ENOSYS);                                                \
   86 }                                                                       \
   87 struct __hack
   88 
   89 void linux_msg(const struct thread *td, const char *fmt, ...)
   90         __printflike(2, 3);
   91 
   92 struct linux_device_handler {
   93         char    *bsd_driver_name;
   94         char    *linux_driver_name;
   95         char    *bsd_device_name;
   96         char    *linux_device_name;
   97         int     linux_major;
   98         int     linux_minor;
   99         int     linux_char_device;
  100 };
  101 
  102 int     linux_device_register_handler(struct linux_device_handler *h);
  103 int     linux_device_unregister_handler(struct linux_device_handler *h);
  104 char    *linux_driver_get_name_dev(device_t dev);
  105 int     linux_driver_get_major_minor(char *node, int *major, int *minor);
  106 char    *linux_get_char_devices(void);
  107 void    linux_free_get_char_devices(char *string);
  108 
  109 #if defined(KTR)
  110 
  111 #define KTR_LINUX                               KTR_SUBSYS
  112 #define LINUX_CTRFMT(nm, fmt)   #nm"("fmt")"
  113 
  114 #define LINUX_CTR6(f, m, p1, p2, p3, p4, p5, p6) do {                   \
  115         if (ldebug(f))                                                  \
  116                 CTR6(KTR_LINUX, LINUX_CTRFMT(f, m),                     \
  117                     p1, p2, p3, p4, p5, p6);                            \
  118 } while (0)
  119 
  120 #define LINUX_CTR(f)                    LINUX_CTR6(f, "", 0, 0, 0, 0, 0, 0)
  121 #define LINUX_CTR0(f, m)                LINUX_CTR6(f, m, 0, 0, 0, 0, 0, 0)
  122 #define LINUX_CTR1(f, m, p1)            LINUX_CTR6(f, m, p1, 0, 0, 0, 0, 0)
  123 #define LINUX_CTR2(f, m, p1, p2)        LINUX_CTR6(f, m, p1, p2, 0, 0, 0, 0)
  124 #define LINUX_CTR3(f, m, p1, p2, p3)    LINUX_CTR6(f, m, p1, p2, p3, 0, 0, 0)
  125 #define LINUX_CTR4(f, m, p1, p2, p3, p4)        LINUX_CTR6(f, m, p1, p2, p3, p4, 0, 0)
  126 #define LINUX_CTR5(f, m, p1, p2, p3, p4, p5)    LINUX_CTR6(f, m, p1, p2, p3, p4, p5, 0)
  127 #else
  128 #define LINUX_CTR(f)
  129 #define LINUX_CTR0(f, m)
  130 #define LINUX_CTR1(f, m, p1)
  131 #define LINUX_CTR2(f, m, p1, p2)
  132 #define LINUX_CTR3(f, m, p1, p2, p3)
  133 #define LINUX_CTR4(f, m, p1, p2, p3, p4)
  134 #define LINUX_CTR5(f, m, p1, p2, p3, p4, p5)
  135 #define LINUX_CTR6(f, m, p1, p2, p3, p4, p5, p6)
  136 #endif
  137 
  138 #endif /* !_LINUX_UTIL_H_ */

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