Line data    Source code

       1             : /*
       2             :  * lwan - web server
       3             :  * Copyright (c) 2018 L. A. F. Pereira <l@tia.mat.br>
       4             :  *
       5             :  * This program is free software; you can redistribute it and/or
       6             :  * modify it under the terms of the GNU General Public License
       7             :  * as published by the Free Software Foundation; either version 2
       8             :  * of the License, or any later version.
       9             :  *
      10             :  * This program is distributed in the hope that it will be useful,
      11             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      12             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      13             :  * GNU General Public License for more details.
      14             :  *
      15             :  * You should have received a copy of the GNU General Public License
      16             :  * along with this program; if not, write to the Free Software
      17             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
      18             :  * USA.
      19             :  */
      20             : 
      21             : #ifndef __MISSING_CAPABILITY_H__
      22             : #define __MISSING_CAPABILITY_H__
      23             : 
      24             : #if defined(__linux__) && defined(LWAN_HAVE_LINUX_CAPABILITY)
      25             : 
      26             : #include_next <linux/capability.h>
      27             : #include <stdio.h>
      28             : #include <sys/syscall.h>
      29             : #include <unistd.h>
      30             : 
      31          87 : static inline int capset(struct __user_cap_header_struct *header,
      32             :                          struct __user_cap_data_struct *data)
      33             : {
      34             : #if defined(SYS_capset)
      35          87 :     return (int)syscall(SYS_capset, header, data);
      36             : #else
      37             :     return 0;
      38             : #endif
      39             : }
      40             : 
      41             : #else
      42             : struct __user_cap_data_struct {
      43             :     unsigned int effective, permitted, inheritable;
      44             : };
      45             : 
      46             : struct __user_cap_header_struct {
      47             : #define _LINUX_CAPABILITY_VERSION_1 0
      48             :     unsigned int version;
      49             :     int pid;
      50             : };
      51             : 
      52             : int capset(struct __user_cap_header_struct *header,
      53             :            struct __user_cap_data_struct *data);
      54             : 
      55             : #endif
      56             : 
      57             : #endif /* __MISSING_CAPABILITY_H__ */