src/util/u_process.c

   1 /*
   2  * Copyright © 2003 Felix Kuehling
   3  * Copyright © 2018 Advanced Micro Devices, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining
   7  * a 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 SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  15  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  16  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  17  * NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS, AUTHORS
  18  * AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * The above copyright notice and this permission notice (including the
  24  * next paragraph) shall be included in all copies or substantial portions
  25  * of the Software.
  26  */
  27
  28 #include "u_process.h"
  29 #include <string.h>
  30 #include <errno.h>
  31 #include <stdlib.h>
  32
  33 #undef GET_PROGRAM_NAME
  34
  35 #if defined(__linux__) && defined(HAVE_PROGRAM_INVOCATION_NAME)
  36 static const char *
  37 __getProgramName()
  38 {
  39    char * arg = strrchr(program_invocation_name, '/');
  40    if (arg) {
  41       /* If the / character was found this is likely a linux path or
  42        * an invocation path for a 64-bit wine program.
  43        *
  44        * However, some programs pass command line arguments into argv[0].
  45        * Strip these arguments out by using the realpath only if it was
  46        * a prefix of the invocation name.
  47        */
  48       static char *path;
  49
  50       if (!path)
  51          /* Note: realpath() allocates memory that we will keep around for
  52           * the lifetime of the app, and then leak as the app closes.
  53           * FIXME: we should find a way to clean this properly
  54           */
  55          path = realpath("/proc/self/exe", NULL);
  56
  57       if (path && strncmp(path, program_invocation_name, strlen(path)) == 0) {
  58          /* This shouldn't be null because path is a a prefix,
  59           * but check it anyway since path is static. */
  60          char * name = strrchr(path, '/');
  61          if (name)
  62             return name + 1;
  63       }
  64
  65       return arg+1;
  66    }
  67
  68    /* If there was no '/' at all we likely have a windows like path from
  69     * a wine application.
  70     */
  71    arg = strrchr(program_invocation_name, '\\');
  72    if (arg)
  73       return arg+1;
  74
  75    return program_invocation_name;
  76 }
  77 #    define GET_PROGRAM_NAME() __getProgramName()
  78 #elif defined(HAVE_PROGRAM_INVOCATION_NAME)
  79 #    define GET_PROGRAM_NAME() program_invocation_short_name
  80 #elif defined(__FreeBSD__) && (__FreeBSD__ >= 2)
  81 #    include <osreldate.h>
  82 #    if (__FreeBSD_version >= 440000)
  83 #        define GET_PROGRAM_NAME() getprogname()
  84 #    endif
  85 #elif defined(__NetBSD__) && defined(__NetBSD_Version__) && (__NetBSD_Version__ >= 106000100)
  86 #    define GET_PROGRAM_NAME() getprogname()
  87 #elif defined(__DragonFly__)
  88 #    define GET_PROGRAM_NAME() getprogname()
  89 #elif defined(__APPLE__)
  90 #    define GET_PROGRAM_NAME() getprogname()
  91 #elif defined(ANDROID)
  92 #    define GET_PROGRAM_NAME() getprogname()
  93 #elif defined(__sun)
  94 /* Solaris has getexecname() which returns the full path - return just
  95    the basename to match BSD getprogname() */
  96 #    include <libgen.h>
  97
  98 static const char *
  99 __getProgramName()
 100 {
 101     static const char *progname;
 102
 103     if (progname == NULL) {
 104         const char *e = getexecname();
 105         if (e != NULL) {
 106             /* Have to make a copy since getexecname can return a readonly
 107                string, but basename expects to be able to modify its arg. */
 108             char *n = strdup(e);
 109             if (n != NULL) {
 110                 progname = basename(n);
 111             }
 112         }
 113     }
 114     return progname;
 115 }
 116
 117 #    define GET_PROGRAM_NAME() __getProgramName()
 118 #endif
 119
 120 #if !defined(GET_PROGRAM_NAME)
 121 #    if defined(__OpenBSD__) || defined(NetBSD) || defined(__UCLIBC__) || defined(ANDROID)
 122 /* This is a hack. It's said to work on OpenBSD, NetBSD and GNU.
 123  * Rogelio M.Serrano Jr. reported it's also working with UCLIBC. It's
 124  * used as a last resort, if there is no documented facility available. */
 125 static const char *
 126 __getProgramName()
 127 {
 128     extern const char *__progname;
 129     char * arg = strrchr(__progname, '/');
 130     if (arg)
 131         return arg+1;
 132     else
 133         return __progname;
 134 }
 135 #        define GET_PROGRAM_NAME() __getProgramName()
 136 #    else
 137 #        define GET_PROGRAM_NAME() ""
 138 #        pragma message ( "Warning: Per application configuration won't work with your OS version." )
 139 #    endif
 140 #endif
 141
 142 const char *
 143 util_get_process_name(void)
 144 {
 145    return GET_PROGRAM_NAME();
 146 }