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#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include "progname.h"
#include "relocatable.h"
#include "c-ctype.h"
static char *
add_dotbin (const char *filename)
{
size_t filename_len = strlen (filename);
char *result = (char *) malloc (filename_len + 4 + 1);
if (result != NULL)
{
if (sizeof (EXEEXT) > sizeof (""))
{
const size_t exeext_len = sizeof (EXEEXT) - sizeof ("");
static const char exeext[] = EXEEXT;
if (filename_len > exeext_len)
{
const char *s1 = filename + filename_len - exeext_len;
const char *s2 = exeext;
for (; *s1 != '\0'; s1++, s2++)
{
unsigned char c1 = *s1;
unsigned char c2 = *s2;
if (c_tolower (c1) != c_tolower (c2))
goto simple_append;
}
memcpy (result, filename, filename_len - exeext_len);
memcpy (result + filename_len - exeext_len, ".bin", 4);
memcpy (result + filename_len - exeext_len + 4,
filename + filename_len - exeext_len,
exeext_len + 1);
return result;
}
}
simple_append:
memcpy (result, filename, filename_len);
memcpy (result + filename_len, ".bin", 4 + 1);
return result;
}
else
{
fprintf (stderr, "%s: %s\n", program_name, "memory exhausted");
exit (1);
}
}
static const char *libdirs[] = { LIBDIRS NULL };
typedef int verify1[2 * (sizeof (libdirs) / sizeof (libdirs[0]) > 1) - 1];
static void
relocate_libdirs ()
{
size_t i;
for (i = 0; i < sizeof (libdirs) / sizeof (libdirs[0]) - 1; i++)
libdirs[i] = relocate (libdirs[i]);
}
static void
activate_libdirs ()
{
const char *old_value;
size_t total;
size_t i;
char *value;
char *p;
old_value = getenv (LIBPATHVAR);
if (old_value == NULL)
old_value = "";
total = 0;
for (i = 0; i < sizeof (libdirs) / sizeof (libdirs[0]) - 1; i++)
total += strlen (libdirs[i]) + 1;
total += strlen (old_value) + 1;
value = (char *) malloc (total);
if (value == NULL)
{
fprintf (stderr, "%s: %s\n", program_name, "memory exhausted");
exit (1);
}
p = value;
for (i = 0; i < sizeof (libdirs) / sizeof (libdirs[0]) - 1; i++)
{
size_t len = strlen (libdirs[i]);
memcpy (p, libdirs[i], len);
p += len;
*p++ = ':';
}
if (old_value[0] != '\0')
strcpy (p, old_value);
else
p[-1] = '\0';
if (setenv (LIBPATHVAR, value, 1) < 0)
{
fprintf (stderr, "%s: %s\n", program_name, "memory exhausted");
exit (1);
}
}
int
main (int argc, char *argv[])
{
char *full_program_name;
set_program_name_and_installdir (argv[0], INSTALLPREFIX, INSTALLDIR);
full_program_name = get_full_program_name ();
if (full_program_name == NULL)
full_program_name = argv[0];
argv[0] = add_dotbin (full_program_name);
relocate_libdirs ();
activate_libdirs ();
execv (argv[0], argv);
fprintf (stderr, "%s: could not execute %s: %s\n",
program_name, argv[0], strerror (errno));
exit (127);
}
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