src/gallium/auxiliary/os/os_process.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2013 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include "pipe/p_config.h"
  30 #include "os/os_process.h"
  31 #include "util/u_memory.h"
  32 #include "util/u_process.h"
  33
  34 #if defined(PIPE_OS_WINDOWS)
  35 #  include <windows.h>
  36 #elif defined(PIPE_OS_HAIKU)
  37 #  include <kernel/OS.h>
  38 #  include <kernel/image.h>
  39 #endif
  40
  41 #if defined(PIPE_OS_LINUX)
  42 #  include <fcntl.h>
  43 #endif
  44
  45
  46 /**
  47  * Return the name of the current process.
  48  * \param procname  returns the process name
  49  * \param size  size of the procname buffer
  50  * \return  TRUE or FALSE for success, failure
  51  */
  52 boolean
  53 os_get_process_name(char *procname, size_t size)
  54 {
  55    const char *name;
  56
  57    /* First, check if the GALLIUM_PROCESS_NAME env var is set to
  58     * override the normal process name query.
  59     */
  60    name = os_get_option("GALLIUM_PROCESS_NAME");
  61
  62    if (!name) {
  63       /* do normal query */
  64
  65 #if defined(PIPE_OS_WINDOWS)
  66       char szProcessPath[MAX_PATH];
  67       char *lpProcessName;
  68       char *lpProcessExt;
  69
  70       GetModuleFileNameA(NULL, szProcessPath, ARRAY_SIZE(szProcessPath));
  71
  72       lpProcessName = strrchr(szProcessPath, '\\');
  73       lpProcessName = lpProcessName ? lpProcessName + 1 : szProcessPath;
  74
  75       lpProcessExt = strrchr(lpProcessName, '.');
  76       if (lpProcessExt) {
  77          *lpProcessExt = '\0';
  78       }
  79
  80       name = lpProcessName;
  81
  82 #elif defined(PIPE_OS_HAIKU)
  83       image_info info;
  84       get_image_info(B_CURRENT_TEAM, &info);
  85       name = info.name;
  86 #else
  87       name = util_get_process_name();
  88 #endif
  89    }
  90
  91    assert(size > 0);
  92    assert(procname);
  93
  94    if (name && procname && size > 0) {
  95       strncpy(procname, name, size);
  96       procname[size - 1] = '\0';
  97       return TRUE;
  98    }
  99    else {
 100       return FALSE;
 101    }
 102 }
 103
 104
 105 /**
 106  * Return the command line for the calling process.  This is basically
 107  * the argv[] array with the arguments separated by spaces.
 108  * \param cmdline  returns the command line string
 109  * \param size  size of the cmdline buffer
 110  * \return  TRUE or FALSE for success, failure
 111  */
 112 boolean
 113 os_get_command_line(char *cmdline, size_t size)
 114 {
 115 #if defined(PIPE_OS_WINDOWS)
 116    const char *args = GetCommandLineA();
 117    if (args) {
 118       strncpy(cmdline, args, size);
 119       // make sure we terminate the string
 120       cmdline[size - 1] = 0;
 121       return TRUE;
 122    }
 123 #elif defined(PIPE_OS_LINUX)
 124    int f = open("/proc/self/cmdline", O_RDONLY);
 125    if (f) {
 126       const int n = read(f, cmdline, size - 1);
 127       int i;
 128       assert(n < size);
 129       // The arguments are separated by '\0' chars.  Convert them to spaces.
 130       for (i = 0; i < n; i++) {
 131          if (cmdline[i] == 0) {
 132             cmdline[i] = ' ';
 133          }
 134       }
 135       // terminate the string
 136       cmdline[n] = 0;
 137       close(f);
 138       return TRUE;
 139    }
 140 #endif
 141
 142    /* XXX to-do: implement this function for other operating systems */
 143
 144    cmdline[0] = 0;
 145    return FALSE;
 146 }