mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-12-30 08:02:38 -05:00
6456232164
* gnu/packages/aux-files/run-in-namespace.c (HAVE_EXEC_WITH_LOADER): New macro. (bind_mount): Rename to... (mirror_directory): ... this. Add 'firmlink' argument and use it instead of calling mkdir/open/close/mount directly. (bind_mount, make_symlink): New functions. (exec_in_user_namespace): Adjust accordingly. (exec_with_loader) [HAVE_EXEC_WITH_LOADER]: New function. (exec_performance): New function. (engines): Add them. * guix/scripts/pack.scm (wrapped-package)[fakechroot-library] [audit-module]: New procedures. [audit-source]: New variable. [build](elf-interpreter, elf-loader-compile-flags): New procedures. (build-wrapper): Use them. * tests/guix-pack-relocatable.sh: Test with 'GUIX_EXECUTION_ENGINE=fakechroot'. * doc/guix.texi (Invoking guix pack): Document the 'performance' and 'fakechroot' engines. * gnu/packages/aux-files/pack-audit.c: New file. * Makefile.am (AUX_FILES): Add it.
85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
/* GNU Guix --- Functional package management for GNU
|
|
Copyright (C) 2020 Ludovic Courtès <ludo@gnu.org>
|
|
|
|
This file is part of GNU Guix.
|
|
|
|
GNU Guix is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or (at
|
|
your option) any later version.
|
|
|
|
GNU Guix is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
/* This file implements part of the GNU ld.so audit interface. It is used by
|
|
the "fakechroot" engine of the 'guix pack -RR' wrappers to make sure the
|
|
loader looks for shared objects under the "fake" root directory. */
|
|
|
|
#define _GNU_SOURCE 1
|
|
|
|
#include <link.h>
|
|
|
|
#include <error.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
|
|
/* The pseudo root directory and store that we are relocating to. */
|
|
static const char *root_directory;
|
|
static char *store;
|
|
|
|
/* The original store, "/gnu/store" by default. */
|
|
static const char original_store[] = "@STORE_DIRECTORY@";
|
|
|
|
/* Like 'malloc', but abort if 'malloc' returns NULL. */
|
|
static void *
|
|
xmalloc (size_t size)
|
|
{
|
|
void *result = malloc (size);
|
|
assert (result != NULL);
|
|
return result;
|
|
}
|
|
|
|
unsigned int
|
|
la_version (unsigned int v)
|
|
{
|
|
if (v != LAV_CURRENT)
|
|
error (1, 0, "cannot handle interface version %u", v);
|
|
|
|
root_directory = getenv ("FAKECHROOT_BASE");
|
|
if (root_directory == NULL)
|
|
error (1, 0, "'FAKECHROOT_BASE' is not set");
|
|
|
|
store = xmalloc (strlen (root_directory) + sizeof original_store);
|
|
strcpy (store, root_directory);
|
|
strcat (store, original_store);
|
|
|
|
return v;
|
|
}
|
|
|
|
/* Return NAME, a shared object file name, relocated under STORE. This
|
|
function is called by the loader whenever it looks for a shared object. */
|
|
char *
|
|
la_objsearch (const char *name, uintptr_t *cookie, unsigned int flag)
|
|
{
|
|
char *result;
|
|
|
|
if (strncmp (name, original_store,
|
|
sizeof original_store - 1) == 0)
|
|
{
|
|
size_t len = strlen (name) - sizeof original_store
|
|
+ strlen (store) + 1;
|
|
result = xmalloc (len);
|
|
strcpy (result, store);
|
|
strcat (result, name + sizeof original_store - 1);
|
|
}
|
|
else
|
|
result = strdup (name);
|
|
|
|
return result;
|
|
}
|