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
33#if defined(PIPE_SUBSYSTEM_WINDOWS_USER)
34#  include <windows.h>
35#elif defined(__GLIBC__) || defined(__CYGWIN__)
36#  include <errno.h>
37#elif defined(PIPE_OS_BSD) || defined(PIPE_OS_APPLE)
38#  include <stdlib.h>
39#elif defined(PIPE_OS_HAIKU)
40#  include <kernel/OS.h>
41#  include <kernel/image.h>
42#else
43#warning unexpected platform in os_process.c
44#endif
45
46#if defined(PIPE_OS_LINUX)
47#  include <fcntl.h>
48#endif
49
50
51/**
52 * Return the name of the current process.
53 * \param procname  returns the process name
54 * \param size  size of the procname buffer
55 * \return  TRUE or FALSE for success, failure
56 */
57boolean
58os_get_process_name(char *procname, size_t size)
59{
60   const char *name;
61
62   /* First, check if the GALLIUM_PROCESS_NAME env var is set to
63    * override the normal process name query.
64    */
65   name = os_get_option("GALLIUM_PROCESS_NAME");
66
67   if (!name) {
68      /* do normal query */
69
70#if defined(PIPE_SUBSYSTEM_WINDOWS_USER)
71      char szProcessPath[MAX_PATH];
72      char *lpProcessName;
73      char *lpProcessExt;
74
75      GetModuleFileNameA(NULL, szProcessPath, ARRAY_SIZE(szProcessPath));
76
77      lpProcessName = strrchr(szProcessPath, '\\');
78      lpProcessName = lpProcessName ? lpProcessName + 1 : szProcessPath;
79
80      lpProcessExt = strrchr(lpProcessName, '.');
81      if (lpProcessExt) {
82         *lpProcessExt = '\0';
83      }
84
85      name = lpProcessName;
86
87#elif defined(__GLIBC__) || defined(__CYGWIN__)
88      name = program_invocation_short_name;
89#elif defined(PIPE_OS_BSD) || defined(PIPE_OS_APPLE)
90      /* *BSD and OS X */
91      name = getprogname();
92#elif defined(PIPE_OS_HAIKU)
93      image_info info;
94      get_image_info(B_CURRENT_TEAM, &info);
95      name = info.name;
96#else
97#warning unexpected platform in os_process.c
98      return FALSE;
99#endif
100
101   }
102
103   assert(size > 0);
104   assert(procname);
105
106   if (name && procname && size > 0) {
107      strncpy(procname, name, size);
108      procname[size - 1] = '\0';
109      return TRUE;
110   }
111   else {
112      return FALSE;
113   }
114}
115
116
117/**
118 * Return the command line for the calling process.  This is basically
119 * the argv[] array with the arguments separated by spaces.
120 * \param cmdline  returns the command line string
121 * \param size  size of the cmdline buffer
122 * \return  TRUE or FALSE for success, failure
123 */
124boolean
125os_get_command_line(char *cmdline, size_t size)
126{
127#if defined(PIPE_SUBSYSTEM_WINDOWS_USER)
128   const char *args = GetCommandLine();
129   if (args) {
130      strncpy(cmdline, args, size);
131      // make sure we terminate the string
132      cmdline[size - 1] = 0;
133      return TRUE;
134   }
135#elif defined(PIPE_OS_LINUX)
136   int f = open("/proc/self/cmdline", O_RDONLY);
137   if (f) {
138      const int n = read(f, cmdline, size - 1);
139      int i;
140      assert(n < size);
141      // The arguments are separated by '\0' chars.  Convert them to spaces.
142      for (i = 0; i < n; i++) {
143         if (cmdline[i] == 0) {
144            cmdline[i] = ' ';
145         }
146      }
147      // terminate the string
148      cmdline[n] = 0;
149      close(f);
150      return TRUE;
151   }
152#endif
153
154   /* XXX to-do: implement this function for other operating systems */
155
156   cmdline[0] = 0;
157   return FALSE;
158}
159