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  * $FreeBSD$
   32  */
   33 
   34 #ifndef _LINUX_UTIL_H_
   35 #define _LINUX_UTIL_H_
   36 
   37 #include <vm/vm.h>
   38 #include <vm/vm_param.h>
   39 #include <vm/pmap.h>
   40 #include <machine/vmparam.h>
   41 #include <sys/exec.h>
   42 #include <sys/sysent.h>
   43 #include <sys/syslog.h>
   44 #include <sys/cdefs.h>
   45 #include <sys/uio.h>
   46 
   47 extern const char linux_emul_path[];
   48 
   49 int linux_emul_convpath(struct thread *, const char *, enum uio_seg, char **, int, int);
   50 
   51 #define LCONVPATH_AT(td, upath, pathp, i, dfd)                          \
   52         do {                                                            \
   53                 int _error;                                             \
   54                                                                         \
   55                 _error = linux_emul_convpath(td, upath, UIO_USERSPACE,  \
   56                     pathp, i, dfd);                                     \
   57                 if (*(pathp) == NULL)                                   \
   58                         return (_error);                                \
   59         } while (0)
   60 
   61 #define LCONVPATH(td, upath, pathp, i)  \
   62    LCONVPATH_AT(td, upath, pathp, i, AT_FDCWD)
   63 
   64 #define LCONVPATHEXIST(td, upath, pathp) LCONVPATH(td, upath, pathp, 0)
   65 #define LCONVPATHEXIST_AT(td, upath, pathp, dfd) LCONVPATH_AT(td, upath, pathp, 0, dfd)
   66 #define LCONVPATHCREAT(td, upath, pathp) LCONVPATH(td, upath, pathp, 1)
   67 #define LCONVPATHCREAT_AT(td, upath, pathp, dfd) LCONVPATH_AT(td, upath, pathp, 1, dfd)
   68 #define LFREEPATH(path) free(path, M_TEMP)
   69 
   70 #define DUMMY(s)                                                        \
   71 int                                                                     \
   72 linux_ ## s(struct thread *td, struct linux_ ## s ## _args *args)       \
   73 {                                                                       \
   74         static pid_t pid;                                               \
   75                                                                         \
   76         if (pid != td->td_proc->p_pid) {                                \
   77                 linux_msg(td, "syscall %s not implemented", #s);        \
   78                 pid = td->td_proc->p_pid;                               \
   79         };                                                              \
   80         return (ENOSYS);                                                \
   81 }                                                                       \
   82 struct __hack
   83 
   84 void linux_msg(const struct thread *td, const char *fmt, ...)
   85         __printflike(2, 3);
   86 
   87 struct linux_device_handler {
   88         char    *bsd_driver_name;
   89         char    *linux_driver_name;
   90         char    *bsd_device_name;
   91         char    *linux_device_name;
   92         int     linux_major;
   93         int     linux_minor;
   94         int     linux_char_device;
   95 };
   96 
   97 int     linux_device_register_handler(struct linux_device_handler *h);
   98 int     linux_device_unregister_handler(struct linux_device_handler *h);
   99 char    *linux_driver_get_name_dev(device_t dev);
  100 int     linux_driver_get_major_minor(char *node, int *major, int *minor);
  101 char    *linux_get_char_devices(void);
  102 void    linux_free_get_char_devices(char *string);
  103 
  104 #if defined(KTR)
  105 
  106 #define KTR_LINUX                               KTR_SUBSYS
  107 #define LINUX_CTRFMT(nm, fmt)   #nm"("fmt")"
  108 
  109 #define LINUX_CTR6(f, m, p1, p2, p3, p4, p5, p6) do {                   \
  110         if (ldebug(f))                                                  \
  111                 CTR6(KTR_LINUX, LINUX_CTRFMT(f, m),                     \
  112                     p1, p2, p3, p4, p5, p6);                            \
  113 } while (0)
  114 
  115 #define LINUX_CTR(f)                    LINUX_CTR6(f, "", 0, 0, 0, 0, 0, 0)
  116 #define LINUX_CTR0(f, m)                LINUX_CTR6(f, m, 0, 0, 0, 0, 0, 0)
  117 #define LINUX_CTR1(f, m, p1)            LINUX_CTR6(f, m, p1, 0, 0, 0, 0, 0)
  118 #define LINUX_CTR2(f, m, p1, p2)        LINUX_CTR6(f, m, p1, p2, 0, 0, 0, 0)
  119 #define LINUX_CTR3(f, m, p1, p2, p3)    LINUX_CTR6(f, m, p1, p2, p3, 0, 0, 0)
  120 #define LINUX_CTR4(f, m, p1, p2, p3, p4)        LINUX_CTR6(f, m, p1, p2, p3, p4, 0, 0)
  121 #define LINUX_CTR5(f, m, p1, p2, p3, p4, p5)    LINUX_CTR6(f, m, p1, p2, p3, p4, p5, 0)
  122 #else
  123 #define LINUX_CTR(f)
  124 #define LINUX_CTR0(f, m)
  125 #define LINUX_CTR1(f, m, p1)
  126 #define LINUX_CTR2(f, m, p1, p2)
  127 #define LINUX_CTR3(f, m, p1, p2, p3)
  128 #define LINUX_CTR4(f, m, p1, p2, p3, p4)
  129 #define LINUX_CTR5(f, m, p1, p2, p3, p4, p5)
  130 #define LINUX_CTR6(f, m, p1, p2, p3, p4, p5, p6)
  131 #endif
  132 
  133 #endif /* !_LINUX_UTIL_H_ */

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