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(__GNU_LIBRARY__) || defined(__GLIBC__)) && !defined(__UCLIBC__)
  36 #    if !defined(__GLIBC__) || (__GLIBC__ < 2)
  37 /* These aren't declared in any libc5 header */
  38 extern char *program_invocation_name, *program_invocation_short_name;
  39 #    endif
  40 static const char *
  41 __getProgramName()
  42 {
  43    char * arg = strrchr(program_invocation_name, '/');
  44    if (arg)
  45       return arg+1;
  46
  47    /* If there was no '/' at all we likely have a windows like path from
  48     * a wine application.
  49     */
  50    arg = strrchr(program_invocation_name, '\\');
  51    if (arg)
  52       return arg+1;
  53
  54    return program_invocation_name;
  55 }
  56 #    define GET_PROGRAM_NAME() __getProgramName()
  57 #elif defined(__CYGWIN__)
  58 #    define GET_PROGRAM_NAME() program_invocation_short_name
  59 #elif defined(__FreeBSD__) && (__FreeBSD__ >= 2)
  60 #    include <osreldate.h>
  61 #    if (__FreeBSD_version >= 440000)
  62 #        define GET_PROGRAM_NAME() getprogname()
  63 #    endif
  64 #elif defined(__NetBSD__) && defined(__NetBSD_Version__) && (__NetBSD_Version__ >= 106000100)
  65 #    define GET_PROGRAM_NAME() getprogname()
  66 #elif defined(__DragonFly__)
  67 #    define GET_PROGRAM_NAME() getprogname()
  68 #elif defined(__APPLE__)
  69 #    define GET_PROGRAM_NAME() getprogname()
  70 #elif defined(ANDROID)
  71 #    define GET_PROGRAM_NAME() getprogname()
  72 #elif defined(__sun)
  73 /* Solaris has getexecname() which returns the full path - return just
  74    the basename to match BSD getprogname() */
  75 #    include <libgen.h>
  76
  77 static const char *
  78 __getProgramName()
  79 {
  80     static const char *progname;
  81
  82     if (progname == NULL) {
  83         const char *e = getexecname();
  84         if (e != NULL) {
  85             /* Have to make a copy since getexecname can return a readonly
  86                string, but basename expects to be able to modify its arg. */
  87             char *n = strdup(e);
  88             if (n != NULL) {
  89                 progname = basename(n);
  90             }
  91         }
  92     }
  93     return progname;
  94 }
  95
  96 #    define GET_PROGRAM_NAME() __getProgramName()
  97 #endif
  98
  99 #if !defined(GET_PROGRAM_NAME)
 100 #    if defined(__OpenBSD__) || defined(NetBSD) || defined(__UCLIBC__) || defined(ANDROID)
 101 /* This is a hack. It's said to work on OpenBSD, NetBSD and GNU.
 102  * Rogelio M.Serrano Jr. reported it's also working with UCLIBC. It's
 103  * used as a last resort, if there is no documented facility available. */
 104 static const char *
 105 __getProgramName()
 106 {
 107     extern const char *__progname;
 108     char * arg = strrchr(__progname, '/');
 109     if (arg)
 110         return arg+1;
 111     else
 112         return __progname;
 113 }
 114 #        define GET_PROGRAM_NAME() __getProgramName()
 115 #    else
 116 #        define GET_PROGRAM_NAME() ""
 117 #        pragma message ( "Warning: Per application configuration won't work with your OS version." )
 118 #    endif
 119 #endif
 120
 121 const char *
 122 util_get_process_name(void)
 123 {
 124    return GET_PROGRAM_NAME();
 125 }