1 /*- 2 * Copyright (c) 2017 Mellanox Technologies, Ltd. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef _LINUXKPI_LINUX_PID_H_ 28 #define _LINUXKPI_LINUX_PID_H_ 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/proc.h> 33 34 enum pid_type { 35 PIDTYPE_PID, 36 PIDTYPE_PGID, 37 PIDTYPE_SID, 38 PIDTYPE_MAX 39 }; 40 41 #define pid_nr(n) (n) 42 #define pid_vnr(n) (n) 43 #define from_kuid_munged(a, uid) (uid) 44 45 #define pid_task(pid, type) ({ \ 46 struct task_struct *__ts; \ 47 CTASSERT((type) == PIDTYPE_PID); \ 48 __ts = linux_pid_task(pid); \ 49 __ts; \ 50 }) 51 52 #define get_pid_task(pid, type) ({ \ 53 struct task_struct *__ts; \ 54 CTASSERT((type) == PIDTYPE_PID); \ 55 __ts = linux_get_pid_task(pid); \ 56 __ts; \ 57 }) 58 59 #define get_task_pid(task, type) ({ \ 60 CTASSERT((type) == PIDTYPE_PID); \ 61 (task)->task_thread->td_tid; \ 62 }) 63 64 struct task_struct; 65 extern struct task_struct *linux_pid_task(pid_t); 66 extern struct task_struct *linux_get_pid_task(pid_t); 67 68 #endif /* _LINUXKPI_LINUX_PID_H_ */ 69