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/*
* BRLTTY - A background process providing access to the console screen (when in
* text mode) for a blind person using a refreshable braille display.
*
* Copyright (C) 1995-2014 by The BRLTTY Developers.
*
* BRLTTY comes with ABSOLUTELY NO WARRANTY.
*
* This is free software, placed under the terms of the
* GNU General Public License, as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any
* later version. Please see the file LICENSE-GPL for details.
*
* Web Page: http://mielke.cc/brltty/
*
* This software is maintained by Dave Mielke <dave@mielke.cc>.
*/
#include "prologue.h"
#include <string.h>
#include <errno.h>
#include "log.h"
#include "pgmpath.h"
char *
getProgramPath (void) {
char *path = NULL;
size_t size = 0X80;
char *buffer = NULL;
while (1) {
{
char *newBuffer = realloc(buffer, size<<=1);
if (!newBuffer) {
logMallocError();
break;
}
buffer = newBuffer;
}
{
int length = readlink("/proc/self/exe", buffer, size);
if (length == -1) {
if (errno != ENOENT) logSystemError("readlink");
break;
}
if (length < size) {
buffer[length] = 0;
if (!(path = strdup(buffer))) logMallocError();
break;
}
}
}
if (buffer) free(buffer);
return path;
}
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