linux_fork.h

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    1 /*-
    2  * Copyright (c) 2021 Dmitry Chagin <dchagin@FreeBSD.org>
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions
    6  * are met:
    7  * 1. Redistributions of source code must retain the above copyright
    8  *    notice, this list of conditions and the following disclaimer.
    9  * 2. Redistributions in binary form must reproduce the above copyright
   10  *    notice, this list of conditions and the following disclaimer in the
   11  *    documentation and/or other materials provided with the distribution.
   12  *
   13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   23  * SUCH DAMAGE.
   24  *
   25  * $FreeBSD$
   26  */
   27 
   28 #ifndef _LINUX_FORK_H_
   29 #define _LINUX_FORK_H_
   30 
   31 #define LINUX_CLONE_VM                  0x00000100
   32 #define LINUX_CLONE_FS                  0x00000200
   33 #define LINUX_CLONE_FILES               0x00000400
   34 #define LINUX_CLONE_SIGHAND             0x00000800
   35 #define LINUX_CLONE_PIDFD               0x00001000      /* since Linux 5.2 */
   36 #define LINUX_CLONE_PTRACE              0x00002000
   37 #define LINUX_CLONE_VFORK               0x00004000
   38 #define LINUX_CLONE_PARENT              0x00008000
   39 #define LINUX_CLONE_THREAD              0x00010000
   40 #define LINUX_CLONE_NEWNS               0x00020000      /* New mount NS */
   41 #define LINUX_CLONE_SYSVSEM             0x00040000
   42 #define LINUX_CLONE_SETTLS              0x00080000
   43 #define LINUX_CLONE_PARENT_SETTID       0x00100000
   44 #define LINUX_CLONE_CHILD_CLEARTID      0x00200000
   45 #define LINUX_CLONE_DETACHED            0x00400000      /* Unused */
   46 #define LINUX_CLONE_UNTRACED            0x00800000
   47 #define LINUX_CLONE_CHILD_SETTID        0x01000000
   48 #define LINUX_CLONE_NEWCGROUP           0x02000000      /* New cgroup NS */
   49 #define LINUX_CLONE_NEWUTS              0x04000000
   50 #define LINUX_CLONE_NEWIPC              0x08000000
   51 #define LINUX_CLONE_NEWUSER             0x10000000
   52 #define LINUX_CLONE_NEWPID              0x20000000
   53 #define LINUX_CLONE_NEWNET              0x40000000
   54 #define LINUX_CLONE_IO                  0x80000000
   55 
   56 /* Flags for the clone3() syscall. */
   57 #define LINUX_CLONE_CLEAR_SIGHAND       0x100000000ULL
   58 #define LINUX_CLONE_INTO_CGROUP         0x200000000ULL
   59 #define LINUX_CLONE_NEWTIME             0x00000080
   60 
   61 #define LINUX_CLONE_LEGACY_FLAGS        0xffffffffULL
   62 
   63 #define LINUX_CSIGNAL                   0x000000ff
   64 
   65 /*
   66  * User-space clone3 args layout.
   67  */
   68 struct l_user_clone_args {
   69         uint64_t flags;
   70         uint64_t pidfd;
   71         uint64_t child_tid;
   72         uint64_t parent_tid;
   73         uint64_t exit_signal;
   74         uint64_t stack;
   75         uint64_t stack_size;
   76         uint64_t tls;
   77         uint64_t set_tid;
   78         uint64_t set_tid_size;
   79         uint64_t cgroup;
   80 };
   81 
   82 /*
   83  * Kernel clone3 args layout.
   84  */
   85 struct l_clone_args {
   86         uint64_t flags;
   87         l_int *child_tid;
   88         l_int *parent_tid;
   89         l_int exit_signal;
   90         l_ulong stack;
   91         l_ulong stack_size;
   92         l_ulong tls;
   93 };
   94 
   95 #define LINUX_CLONE_ARGS_SIZE_VER0      64
   96 
   97 int linux_set_upcall(struct thread *, register_t);
   98 int linux_set_cloned_tls(struct thread *, void *);
   99 void linux_thread_detach(struct thread *);
  100 
  101 #endif /* _LINUX_FORK_H_ */

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

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