/* Provide relocatable packages.
|
/* Provide relocatable packages.
|
Copyright (C) 2003 Free Software Foundation, Inc.
|
Copyright (C) 2003 Free Software Foundation, Inc.
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Written by Bruno Haible <bruno@clisp.org>, 2003.
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Written by Bruno Haible <bruno@clisp.org>, 2003.
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|
|
This program is free software; you can redistribute it and/or modify it
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU Library General Public License as published
|
under the terms of the GNU Library General Public License as published
|
by the Free Software Foundation; either version 2, or (at your option)
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by the Free Software Foundation; either version 2, or (at your option)
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any later version.
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any later version.
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|
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
Library General Public License for more details.
|
Library General Public License for more details.
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|
|
You should have received a copy of the GNU Library General Public
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You should have received a copy of the GNU Library General Public
|
License along with this program; if not, write to the Free Software
|
License along with this program; if not, write to the Free Software
|
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
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USA. */
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USA. */
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|
|
|
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/* Tell glibc's <stdio.h> to provide a prototype for getline().
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/* Tell glibc's <stdio.h> to provide a prototype for getline().
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This must come before <config.h> because <config.h> may include
|
This must come before <config.h> because <config.h> may include
|
<features.h>, and once <features.h> has been included, it's too late. */
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<features.h>, and once <features.h> has been included, it's too late. */
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#ifndef _GNU_SOURCE
|
#ifndef _GNU_SOURCE
|
# define _GNU_SOURCE 1
|
# define _GNU_SOURCE 1
|
#endif
|
#endif
|
|
|
#ifdef HAVE_CONFIG_H
|
#ifdef HAVE_CONFIG_H
|
# include "config.h"
|
# include "config.h"
|
#endif
|
#endif
|
|
|
/* Specification. */
|
/* Specification. */
|
#include "relocatable.h"
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#include "relocatable.h"
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|
|
#if ENABLE_RELOCATABLE
|
#if ENABLE_RELOCATABLE
|
|
|
#include <stddef.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdlib.h>
|
#include <string.h>
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#include <string.h>
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|
|
#ifdef NO_XMALLOC
|
#ifdef NO_XMALLOC
|
# define xmalloc malloc
|
# define xmalloc malloc
|
#else
|
#else
|
# include "xmalloc.h"
|
# include "xmalloc.h"
|
#endif
|
#endif
|
|
|
#if DEPENDS_ON_LIBCHARSET
|
#if DEPENDS_ON_LIBCHARSET
|
# include <libcharset.h>
|
# include <libcharset.h>
|
#endif
|
#endif
|
#if DEPENDS_ON_LIBICONV && HAVE_ICONV
|
#if DEPENDS_ON_LIBICONV && HAVE_ICONV
|
# include <iconv.h>
|
# include <iconv.h>
|
#endif
|
#endif
|
#if DEPENDS_ON_LIBINTL && ENABLE_NLS
|
#if DEPENDS_ON_LIBINTL && ENABLE_NLS
|
# include <libintl.h>
|
# include <libintl.h>
|
#endif
|
#endif
|
|
|
/* Faked cheap 'bool'. */
|
/* Faked cheap 'bool'. */
|
#undef bool
|
#undef bool
|
#undef false
|
#undef false
|
#undef true
|
#undef true
|
#define bool int
|
#define bool int
|
#define false 0
|
#define false 0
|
#define true 1
|
#define true 1
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|
|
/* Pathname support.
|
/* Pathname support.
|
ISSLASH(C) tests whether C is a directory separator character.
|
ISSLASH(C) tests whether C is a directory separator character.
|
IS_PATH_WITH_DIR(P) tests whether P contains a directory specification.
|
IS_PATH_WITH_DIR(P) tests whether P contains a directory specification.
|
*/
|
*/
|
#if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__
|
#if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__
|
/* Win32, OS/2, DOS */
|
/* Win32, OS/2, DOS */
|
# define ISSLASH(C) ((C) == '/' || (C) == '\\')
|
# define ISSLASH(C) ((C) == '/' || (C) == '\\')
|
# define HAS_DEVICE(P) \
|
# define HAS_DEVICE(P) \
|
((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \
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((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \
|
&& (P)[1] == ':')
|
&& (P)[1] == ':')
|
# define IS_PATH_WITH_DIR(P) \
|
# define IS_PATH_WITH_DIR(P) \
|
(strchr (P, '/') != NULL || strchr (P, '\\') != NULL || HAS_DEVICE (P))
|
(strchr (P, '/') != NULL || strchr (P, '\\') != NULL || HAS_DEVICE (P))
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# define FILESYSTEM_PREFIX_LEN(P) (HAS_DEVICE (P) ? 2 : 0)
|
# define FILESYSTEM_PREFIX_LEN(P) (HAS_DEVICE (P) ? 2 : 0)
|
#else
|
#else
|
/* Unix */
|
/* Unix */
|
# define ISSLASH(C) ((C) == '/')
|
# define ISSLASH(C) ((C) == '/')
|
# define IS_PATH_WITH_DIR(P) (strchr (P, '/') != NULL)
|
# define IS_PATH_WITH_DIR(P) (strchr (P, '/') != NULL)
|
# define FILESYSTEM_PREFIX_LEN(P) 0
|
# define FILESYSTEM_PREFIX_LEN(P) 0
|
#endif
|
#endif
|
|
|
/* Original installation prefix. */
|
/* Original installation prefix. */
|
static char *orig_prefix;
|
static char *orig_prefix;
|
static size_t orig_prefix_len;
|
static size_t orig_prefix_len;
|
/* Current installation prefix. */
|
/* Current installation prefix. */
|
static char *curr_prefix;
|
static char *curr_prefix;
|
static size_t curr_prefix_len;
|
static size_t curr_prefix_len;
|
/* These prefixes do not end in a slash. Anything that will be concatenated
|
/* These prefixes do not end in a slash. Anything that will be concatenated
|
to them must start with a slash. */
|
to them must start with a slash. */
|
|
|
/* Sets the original and the current installation prefix of this module.
|
/* Sets the original and the current installation prefix of this module.
|
Relocation simply replaces a pathname starting with the original prefix
|
Relocation simply replaces a pathname starting with the original prefix
|
by the corresponding pathname with the current prefix instead. Both
|
by the corresponding pathname with the current prefix instead. Both
|
prefixes should be directory names without trailing slash (i.e. use ""
|
prefixes should be directory names without trailing slash (i.e. use ""
|
instead of "/"). */
|
instead of "/"). */
|
static void
|
static void
|
set_this_relocation_prefix (const char *orig_prefix_arg,
|
set_this_relocation_prefix (const char *orig_prefix_arg,
|
const char *curr_prefix_arg)
|
const char *curr_prefix_arg)
|
{
|
{
|
if (orig_prefix_arg != NULL && curr_prefix_arg != NULL
|
if (orig_prefix_arg != NULL && curr_prefix_arg != NULL
|
/* Optimization: if orig_prefix and curr_prefix are equal, the
|
/* Optimization: if orig_prefix and curr_prefix are equal, the
|
relocation is a nop. */
|
relocation is a nop. */
|
&& strcmp (orig_prefix_arg, curr_prefix_arg) != 0)
|
&& strcmp (orig_prefix_arg, curr_prefix_arg) != 0)
|
{
|
{
|
/* Duplicate the argument strings. */
|
/* Duplicate the argument strings. */
|
char *memory;
|
char *memory;
|
|
|
orig_prefix_len = strlen (orig_prefix_arg);
|
orig_prefix_len = strlen (orig_prefix_arg);
|
curr_prefix_len = strlen (curr_prefix_arg);
|
curr_prefix_len = strlen (curr_prefix_arg);
|
memory = (char *) xmalloc (orig_prefix_len + 1 + curr_prefix_len + 1);
|
memory = (char *) xmalloc (orig_prefix_len + 1 + curr_prefix_len + 1);
|
#ifdef NO_XMALLOC
|
#ifdef NO_XMALLOC
|
if (memory != NULL)
|
if (memory != NULL)
|
#endif
|
#endif
|
{
|
{
|
memcpy (memory, orig_prefix_arg, orig_prefix_len + 1);
|
memcpy (memory, orig_prefix_arg, orig_prefix_len + 1);
|
orig_prefix = memory;
|
orig_prefix = memory;
|
memory += orig_prefix_len + 1;
|
memory += orig_prefix_len + 1;
|
memcpy (memory, curr_prefix_arg, curr_prefix_len + 1);
|
memcpy (memory, curr_prefix_arg, curr_prefix_len + 1);
|
curr_prefix = memory;
|
curr_prefix = memory;
|
return;
|
return;
|
}
|
}
|
}
|
}
|
orig_prefix = NULL;
|
orig_prefix = NULL;
|
curr_prefix = NULL;
|
curr_prefix = NULL;
|
/* Don't worry about wasted memory here - this function is usually only
|
/* Don't worry about wasted memory here - this function is usually only
|
called once. */
|
called once. */
|
}
|
}
|
|
|
/* Sets the original and the current installation prefix of the package.
|
/* Sets the original and the current installation prefix of the package.
|
Relocation simply replaces a pathname starting with the original prefix
|
Relocation simply replaces a pathname starting with the original prefix
|
by the corresponding pathname with the current prefix instead. Both
|
by the corresponding pathname with the current prefix instead. Both
|
prefixes should be directory names without trailing slash (i.e. use ""
|
prefixes should be directory names without trailing slash (i.e. use ""
|
instead of "/"). */
|
instead of "/"). */
|
void
|
void
|
set_relocation_prefix (const char *orig_prefix_arg, const char *curr_prefix_arg)
|
set_relocation_prefix (const char *orig_prefix_arg, const char *curr_prefix_arg)
|
{
|
{
|
set_this_relocation_prefix (orig_prefix_arg, curr_prefix_arg);
|
set_this_relocation_prefix (orig_prefix_arg, curr_prefix_arg);
|
|
|
/* Now notify all dependent libraries. */
|
/* Now notify all dependent libraries. */
|
#if DEPENDS_ON_LIBCHARSET
|
#if DEPENDS_ON_LIBCHARSET
|
libcharset_set_relocation_prefix (orig_prefix_arg, curr_prefix_arg);
|
libcharset_set_relocation_prefix (orig_prefix_arg, curr_prefix_arg);
|
#endif
|
#endif
|
#if DEPENDS_ON_LIBICONV && HAVE_ICONV && _LIBICONV_VERSION >= 0x0109
|
#if DEPENDS_ON_LIBICONV && HAVE_ICONV && _LIBICONV_VERSION >= 0x0109
|
libiconv_set_relocation_prefix (orig_prefix_arg, curr_prefix_arg);
|
libiconv_set_relocation_prefix (orig_prefix_arg, curr_prefix_arg);
|
#endif
|
#endif
|
#if DEPENDS_ON_LIBINTL && ENABLE_NLS && defined libintl_set_relocation_prefix
|
#if DEPENDS_ON_LIBINTL && ENABLE_NLS && defined libintl_set_relocation_prefix
|
libintl_set_relocation_prefix (orig_prefix_arg, curr_prefix_arg);
|
libintl_set_relocation_prefix (orig_prefix_arg, curr_prefix_arg);
|
#endif
|
#endif
|
}
|
}
|
|
|
/* Convenience function:
|
/* Convenience function:
|
Computes the current installation prefix, based on the original
|
Computes the current installation prefix, based on the original
|
installation prefix, the original installation directory of a particular
|
installation prefix, the original installation directory of a particular
|
file, and the current pathname of this file. Returns NULL upon failure. */
|
file, and the current pathname of this file. Returns NULL upon failure. */
|
#ifdef IN_LIBRARY
|
#ifdef IN_LIBRARY
|
#define compute_curr_prefix local_compute_curr_prefix
|
#define compute_curr_prefix local_compute_curr_prefix
|
static
|
static
|
#endif
|
#endif
|
const char *
|
const char *
|
compute_curr_prefix (const char *orig_installprefix,
|
compute_curr_prefix (const char *orig_installprefix,
|
const char *orig_installdir,
|
const char *orig_installdir,
|
const char *curr_pathname)
|
const char *curr_pathname)
|
{
|
{
|
const char *curr_installdir;
|
const char *curr_installdir;
|
const char *rel_installdir;
|
const char *rel_installdir;
|
|
|
if (curr_pathname == NULL)
|
if (curr_pathname == NULL)
|
return NULL;
|
return NULL;
|
|
|
/* Determine the relative installation directory, relative to the prefix.
|
/* Determine the relative installation directory, relative to the prefix.
|
This is simply the difference between orig_installprefix and
|
This is simply the difference between orig_installprefix and
|
orig_installdir. */
|
orig_installdir. */
|
if (strncmp (orig_installprefix, orig_installdir, strlen (orig_installprefix))
|
if (strncmp (orig_installprefix, orig_installdir, strlen (orig_installprefix))
|
!= 0)
|
!= 0)
|
/* Shouldn't happen - nothing should be installed outside $(prefix). */
|
/* Shouldn't happen - nothing should be installed outside $(prefix). */
|
return NULL;
|
return NULL;
|
rel_installdir = orig_installdir + strlen (orig_installprefix);
|
rel_installdir = orig_installdir + strlen (orig_installprefix);
|
|
|
/* Determine the current installation directory. */
|
/* Determine the current installation directory. */
|
{
|
{
|
const char *p_base = curr_pathname + FILESYSTEM_PREFIX_LEN (curr_pathname);
|
const char *p_base = curr_pathname + FILESYSTEM_PREFIX_LEN (curr_pathname);
|
const char *p = curr_pathname + strlen (curr_pathname);
|
const char *p = curr_pathname + strlen (curr_pathname);
|
char *q;
|
char *q;
|
|
|
while (p > p_base)
|
while (p > p_base)
|
{
|
{
|
p--;
|
p--;
|
if (ISSLASH (*p))
|
if (ISSLASH (*p))
|
break;
|
break;
|
}
|
}
|
|
|
q = (char *) xmalloc (p - curr_pathname + 1);
|
q = (char *) xmalloc (p - curr_pathname + 1);
|
#ifdef NO_XMALLOC
|
#ifdef NO_XMALLOC
|
if (q == NULL)
|
if (q == NULL)
|
return NULL;
|
return NULL;
|
#endif
|
#endif
|
memcpy (q, curr_pathname, p - curr_pathname);
|
memcpy (q, curr_pathname, p - curr_pathname);
|
q[p - curr_pathname] = '\0';
|
q[p - curr_pathname] = '\0';
|
curr_installdir = q;
|
curr_installdir = q;
|
}
|
}
|
|
|
/* Compute the current installation prefix by removing the trailing
|
/* Compute the current installation prefix by removing the trailing
|
rel_installdir from it. */
|
rel_installdir from it. */
|
{
|
{
|
const char *rp = rel_installdir + strlen (rel_installdir);
|
const char *rp = rel_installdir + strlen (rel_installdir);
|
const char *cp = curr_installdir + strlen (curr_installdir);
|
const char *cp = curr_installdir + strlen (curr_installdir);
|
const char *cp_base =
|
const char *cp_base =
|
curr_installdir + FILESYSTEM_PREFIX_LEN (curr_installdir);
|
curr_installdir + FILESYSTEM_PREFIX_LEN (curr_installdir);
|
|
|
while (rp > rel_installdir && cp > cp_base)
|
while (rp > rel_installdir && cp > cp_base)
|
{
|
{
|
bool same = false;
|
bool same = false;
|
const char *rpi = rp;
|
const char *rpi = rp;
|
const char *cpi = cp;
|
const char *cpi = cp;
|
|
|
while (rpi > rel_installdir && cpi > cp_base)
|
while (rpi > rel_installdir && cpi > cp_base)
|
{
|
{
|
rpi--;
|
rpi--;
|
cpi--;
|
cpi--;
|
if (ISSLASH (*rpi) || ISSLASH (*cpi))
|
if (ISSLASH (*rpi) || ISSLASH (*cpi))
|
{
|
{
|
if (ISSLASH (*rpi) && ISSLASH (*cpi))
|
if (ISSLASH (*rpi) && ISSLASH (*cpi))
|
same = true;
|
same = true;
|
break;
|
break;
|
}
|
}
|
#if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__
|
#if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__
|
/* Win32, OS/2, DOS - case insignificant filesystem */
|
/* Win32, OS/2, DOS - case insignificant filesystem */
|
if ((*rpi >= 'a' && *rpi <= 'z' ? *rpi - 'a' + 'A' : *rpi)
|
if ((*rpi >= 'a' && *rpi <= 'z' ? *rpi - 'a' + 'A' : *rpi)
|
!= (*cpi >= 'a' && *cpi <= 'z' ? *cpi - 'a' + 'A' : *cpi))
|
!= (*cpi >= 'a' && *cpi <= 'z' ? *cpi - 'a' + 'A' : *cpi))
|
break;
|
break;
|
#else
|
#else
|
if (*rpi != *cpi)
|
if (*rpi != *cpi)
|
break;
|
break;
|
#endif
|
#endif
|
}
|
}
|
if (!same)
|
if (!same)
|
break;
|
break;
|
/* The last pathname component was the same. opi and cpi now point
|
/* The last pathname component was the same. opi and cpi now point
|
to the slash before it. */
|
to the slash before it. */
|
rp = rpi;
|
rp = rpi;
|
cp = cpi;
|
cp = cpi;
|
}
|
}
|
|
|
if (rp > rel_installdir)
|
if (rp > rel_installdir)
|
/* Unexpected: The curr_installdir does not end with rel_installdir. */
|
/* Unexpected: The curr_installdir does not end with rel_installdir. */
|
return NULL;
|
return NULL;
|
|
|
{
|
{
|
size_t curr_prefix_len = cp - curr_installdir;
|
size_t curr_prefix_len = cp - curr_installdir;
|
char *curr_prefix;
|
char *curr_prefix;
|
|
|
curr_prefix = (char *) xmalloc (curr_prefix_len + 1);
|
curr_prefix = (char *) xmalloc (curr_prefix_len + 1);
|
#ifdef NO_XMALLOC
|
#ifdef NO_XMALLOC
|
if (curr_prefix == NULL)
|
if (curr_prefix == NULL)
|
return NULL;
|
return NULL;
|
#endif
|
#endif
|
memcpy (curr_prefix, curr_installdir, curr_prefix_len);
|
memcpy (curr_prefix, curr_installdir, curr_prefix_len);
|
curr_prefix[curr_prefix_len] = '\0';
|
curr_prefix[curr_prefix_len] = '\0';
|
|
|
return curr_prefix;
|
return curr_prefix;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
#if defined PIC && defined INSTALLDIR
|
#if defined PIC && defined INSTALLDIR
|
|
|
/* Full pathname of shared library, or NULL. */
|
/* Full pathname of shared library, or NULL. */
|
static char *shared_library_fullname;
|
static char *shared_library_fullname;
|
|
|
#if defined _WIN32 || defined __WIN32__
|
#if defined _WIN32 || defined __WIN32__
|
|
|
/* Determine the full pathname of the shared library when it is loaded. */
|
/* Determine the full pathname of the shared library when it is loaded. */
|
|
|
BOOL WINAPI
|
BOOL WINAPI
|
DllMain (HINSTANCE module_handle, DWORD event, LPVOID reserved)
|
DllMain (HINSTANCE module_handle, DWORD event, LPVOID reserved)
|
{
|
{
|
(void) reserved;
|
(void) reserved;
|
|
|
if (event == DLL_PROCESS_ATTACH)
|
if (event == DLL_PROCESS_ATTACH)
|
{
|
{
|
/* The DLL is being loaded into an application's address range. */
|
/* The DLL is being loaded into an application's address range. */
|
static char location[MAX_PATH];
|
static char location[MAX_PATH];
|
|
|
if (!GetModuleFileName (module_handle, location, sizeof (location)))
|
if (!GetModuleFileName (module_handle, location, sizeof (location)))
|
/* Shouldn't happen. */
|
/* Shouldn't happen. */
|
return FALSE;
|
return FALSE;
|
|
|
if (!IS_PATH_WITH_DIR (location))
|
if (!IS_PATH_WITH_DIR (location))
|
/* Shouldn't happen. */
|
/* Shouldn't happen. */
|
return FALSE;
|
return FALSE;
|
|
|
shared_library_fullname = strdup (location);
|
shared_library_fullname = strdup (location);
|
}
|
}
|
|
|
return TRUE;
|
return TRUE;
|
}
|
}
|
|
|
#else /* Unix */
|
#else /* Unix */
|
|
|
static void
|
static void
|
find_shared_library_fullname ()
|
find_shared_library_fullname ()
|
{
|
{
|
#ifdef __linux__
|
#ifdef __linux__
|
FILE *fp;
|
FILE *fp;
|
|
|
/* Open the current process' maps file. It describes one VMA per line. */
|
/* Open the current process' maps file. It describes one VMA per line. */
|
fp = fopen ("/proc/self/maps", "r");
|
fp = fopen ("/proc/self/maps", "r");
|
if (fp)
|
if (fp)
|
{
|
{
|
unsigned long address = (unsigned long) &find_shared_library_fullname;
|
unsigned long address = (unsigned long) &find_shared_library_fullname;
|
for (;;)
|
for (;;)
|
{
|
{
|
unsigned long start, end;
|
unsigned long start, end;
|
int c;
|
int c;
|
|
|
if (fscanf (fp, "%lx-%lx", &start, &end) != 2)
|
if (fscanf (fp, "%lx-%lx", &start, &end) != 2)
|
break;
|
break;
|
if (address >= start && address <= end - 1)
|
if (address >= start && address <= end - 1)
|
{
|
{
|
/* Found it. Now see if this line contains a filename. */
|
/* Found it. Now see if this line contains a filename. */
|
while (c = getc (fp), c != EOF && c != '\n' && c != '/')
|
while (c = getc (fp), c != EOF && c != '\n' && c != '/')
|
continue;
|
continue;
|
if (c == '/')
|
if (c == '/')
|
{
|
{
|
size_t size;
|
size_t size;
|
int len;
|
int len;
|
|
|
ungetc (c, fp);
|
ungetc (c, fp);
|
shared_library_fullname = NULL; size = 0;
|
shared_library_fullname = NULL; size = 0;
|
len = getline (&shared_library_fullname, &size, fp);
|
len = getline (&shared_library_fullname, &size, fp);
|
if (len >= 0)
|
if (len >= 0)
|
{
|
{
|
/* Success: filled shared_library_fullname. */
|
/* Success: filled shared_library_fullname. */
|
if (len > 0 && shared_library_fullname[len - 1] == '\n')
|
if (len > 0 && shared_library_fullname[len - 1] == '\n')
|
shared_library_fullname[len - 1] = '\0';
|
shared_library_fullname[len - 1] = '\0';
|
}
|
}
|
}
|
}
|
break;
|
break;
|
}
|
}
|
while (c = getc (fp), c != EOF && c != '\n')
|
while (c = getc (fp), c != EOF && c != '\n')
|
continue;
|
continue;
|
}
|
}
|
fclose (fp);
|
fclose (fp);
|
}
|
}
|
#endif
|
#endif
|
}
|
}
|
|
|
#endif /* WIN32 / Unix */
|
#endif /* WIN32 / Unix */
|
|
|
/* Return the full pathname of the current shared library.
|
/* Return the full pathname of the current shared library.
|
Return NULL if unknown.
|
Return NULL if unknown.
|
Guaranteed to work only on Linux and Woe32. */
|
Guaranteed to work only on Linux and Woe32. */
|
static char *
|
static char *
|
get_shared_library_fullname ()
|
get_shared_library_fullname ()
|
{
|
{
|
#if !(defined _WIN32 || defined __WIN32__)
|
#if !(defined _WIN32 || defined __WIN32__)
|
static bool tried_find_shared_library_fullname;
|
static bool tried_find_shared_library_fullname;
|
if (!tried_find_shared_library_fullname)
|
if (!tried_find_shared_library_fullname)
|
{
|
{
|
find_shared_library_fullname ();
|
find_shared_library_fullname ();
|
tried_find_shared_library_fullname = true;
|
tried_find_shared_library_fullname = true;
|
}
|
}
|
#endif
|
#endif
|
return shared_library_fullname;
|
return shared_library_fullname;
|
}
|
}
|
|
|
#endif /* PIC */
|
#endif /* PIC */
|
|
|
/* Returns the pathname, relocated according to the current installation
|
/* Returns the pathname, relocated according to the current installation
|
directory. */
|
directory. */
|
const char *
|
const char *
|
relocate (const char *pathname)
|
relocate (const char *pathname)
|
{
|
{
|
#if defined PIC && defined INSTALLDIR
|
#if defined PIC && defined INSTALLDIR
|
static int initialized;
|
static int initialized;
|
|
|
/* Initialization code for a shared library. */
|
/* Initialization code for a shared library. */
|
if (!initialized)
|
if (!initialized)
|
{
|
{
|
/* At this point, orig_prefix and curr_prefix likely have already been
|
/* At this point, orig_prefix and curr_prefix likely have already been
|
set through the main program's set_program_name_and_installdir
|
set through the main program's set_program_name_and_installdir
|
function. This is sufficient in the case that the library has
|
function. This is sufficient in the case that the library has
|
initially been installed in the same orig_prefix. But we can do
|
initially been installed in the same orig_prefix. But we can do
|
better, to also cover the cases that 1. it has been installed
|
better, to also cover the cases that 1. it has been installed
|
in a different prefix before being moved to orig_prefix and (later)
|
in a different prefix before being moved to orig_prefix and (later)
|
to curr_prefix, 2. unlike the program, it has not moved away from
|
to curr_prefix, 2. unlike the program, it has not moved away from
|
orig_prefix. */
|
orig_prefix. */
|
const char *orig_installprefix = INSTALLPREFIX;
|
const char *orig_installprefix = INSTALLPREFIX;
|
const char *orig_installdir = INSTALLDIR;
|
const char *orig_installdir = INSTALLDIR;
|
const char *curr_prefix_better;
|
const char *curr_prefix_better;
|
|
|
curr_prefix_better =
|
curr_prefix_better =
|
compute_curr_prefix (orig_installprefix, orig_installdir,
|
compute_curr_prefix (orig_installprefix, orig_installdir,
|
get_shared_library_fullname ());
|
get_shared_library_fullname ());
|
if (curr_prefix_better == NULL)
|
if (curr_prefix_better == NULL)
|
curr_prefix_better = curr_prefix;
|
curr_prefix_better = curr_prefix;
|
|
|
set_relocation_prefix (orig_installprefix, curr_prefix_better);
|
set_relocation_prefix (orig_installprefix, curr_prefix_better);
|
|
|
initialized = 1;
|
initialized = 1;
|
}
|
}
|
#endif
|
#endif
|
|
|
/* Note: It is not necessary to perform case insensitive comparison here,
|
/* Note: It is not necessary to perform case insensitive comparison here,
|
even for DOS-like filesystems, because the pathname argument was
|
even for DOS-like filesystems, because the pathname argument was
|
typically created from the same Makefile variable as orig_prefix came
|
typically created from the same Makefile variable as orig_prefix came
|
from. */
|
from. */
|
if (orig_prefix != NULL && curr_prefix != NULL
|
if (orig_prefix != NULL && curr_prefix != NULL
|
&& strncmp (pathname, orig_prefix, orig_prefix_len) == 0)
|
&& strncmp (pathname, orig_prefix, orig_prefix_len) == 0)
|
{
|
{
|
if (pathname[orig_prefix_len] == '\0')
|
if (pathname[orig_prefix_len] == '\0')
|
/* pathname equals orig_prefix. */
|
/* pathname equals orig_prefix. */
|
return curr_prefix;
|
return curr_prefix;
|
if (ISSLASH (pathname[orig_prefix_len]))
|
if (ISSLASH (pathname[orig_prefix_len]))
|
{
|
{
|
/* pathname starts with orig_prefix. */
|
/* pathname starts with orig_prefix. */
|
const char *pathname_tail = &pathname[orig_prefix_len];
|
const char *pathname_tail = &pathname[orig_prefix_len];
|
char *result =
|
char *result =
|
(char *) xmalloc (curr_prefix_len + strlen (pathname_tail) + 1);
|
(char *) xmalloc (curr_prefix_len + strlen (pathname_tail) + 1);
|
|
|
#ifdef NO_XMALLOC
|
#ifdef NO_XMALLOC
|
if (result != NULL)
|
if (result != NULL)
|
#endif
|
#endif
|
{
|
{
|
memcpy (result, curr_prefix, curr_prefix_len);
|
memcpy (result, curr_prefix, curr_prefix_len);
|
strcpy (result + curr_prefix_len, pathname_tail);
|
strcpy (result + curr_prefix_len, pathname_tail);
|
return result;
|
return result;
|
}
|
}
|
}
|
}
|
}
|
}
|
/* Nothing to relocate. */
|
/* Nothing to relocate. */
|
return pathname;
|
return pathname;
|
}
|
}
|
|
|
#endif
|
#endif
|
|
|
