summaryrefslogtreecommitdiff
path: root/gpxe/src/core/image.c
diff options
context:
space:
mode:
Diffstat (limited to 'gpxe/src/core/image.c')
-rw-r--r--gpxe/src/core/image.c328
1 files changed, 0 insertions, 328 deletions
diff --git a/gpxe/src/core/image.c b/gpxe/src/core/image.c
deleted file mode 100644
index 24fe51ab..00000000
--- a/gpxe/src/core/image.c
+++ /dev/null
@@ -1,328 +0,0 @@
-/*
- * Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
- *
- * This program 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 2 of the
- * License, or any later version.
- *
- * This program 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 this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-FILE_LICENCE ( GPL2_OR_LATER );
-
-#include <stddef.h>
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <errno.h>
-#include <assert.h>
-#include <libgen.h>
-#include <gpxe/list.h>
-#include <gpxe/umalloc.h>
-#include <gpxe/uri.h>
-#include <gpxe/image.h>
-
-/** @file
- *
- * Executable/loadable images
- *
- */
-
-/** List of registered images */
-struct list_head images = LIST_HEAD_INIT ( images );
-
-/**
- * Free executable/loadable image
- *
- * @v refcnt Reference counter
- */
-static void free_image ( struct refcnt *refcnt ) {
- struct image *image = container_of ( refcnt, struct image, refcnt );
-
- uri_put ( image->uri );
- ufree ( image->data );
- image_put ( image->replacement );
- free ( image );
- DBGC ( image, "IMAGE %p freed\n", image );
-}
-
-/**
- * Allocate executable/loadable image
- *
- * @ret image Executable/loadable image
- */
-struct image * alloc_image ( void ) {
- struct image *image;
-
- image = zalloc ( sizeof ( *image ) );
- if ( image ) {
- image->refcnt.free = free_image;
- }
- return image;
-}
-
-/**
- * Set image URI
- *
- * @v image Image
- * @v URI New image URI
- * @ret rc Return status code
- *
- * If no name is set, the name will be updated to the base name of the
- * URI path (if any).
- */
-int image_set_uri ( struct image *image, struct uri *uri ) {
- const char *path = uri->path;
-
- /* Replace URI reference */
- uri_put ( image->uri );
- image->uri = uri_get ( uri );
-
- /* Set name if none already specified */
- if ( path && ( ! image->name[0] ) )
- image_set_name ( image, basename ( ( char * ) path ) );
-
- return 0;
-}
-
-/**
- * Set image command line
- *
- * @v image Image
- * @v cmdline New image command line
- * @ret rc Return status code
- */
-int image_set_cmdline ( struct image *image, const char *cmdline ) {
- free ( image->cmdline );
- image->cmdline = strdup ( cmdline );
- if ( ! image->cmdline )
- return -ENOMEM;
- return 0;
-}
-
-/**
- * Register executable/loadable image
- *
- * @v image Executable/loadable image
- * @ret rc Return status code
- */
-int register_image ( struct image *image ) {
- static unsigned int imgindex = 0;
-
- /* Create image name if it doesn't already have one */
- if ( ! image->name[0] ) {
- snprintf ( image->name, sizeof ( image->name ), "img%d",
- imgindex++ );
- }
-
- /* Add to image list */
- image_get ( image );
- list_add_tail ( &image->list, &images );
- DBGC ( image, "IMAGE %p at [%lx,%lx) registered as %s\n",
- image, user_to_phys ( image->data, 0 ),
- user_to_phys ( image->data, image->len ), image->name );
-
- return 0;
-}
-
-/**
- * Unregister executable/loadable image
- *
- * @v image Executable/loadable image
- */
-void unregister_image ( struct image *image ) {
- DBGC ( image, "IMAGE %p unregistered\n", image );
- list_del ( &image->list );
- image_put ( image );
-}
-
-/**
- * Find image by name
- *
- * @v name Image name
- * @ret image Executable/loadable image, or NULL
- */
-struct image * find_image ( const char *name ) {
- struct image *image;
-
- list_for_each_entry ( image, &images, list ) {
- if ( strcmp ( image->name, name ) == 0 )
- return image;
- }
-
- return NULL;
-}
-
-/**
- * Load executable/loadable image into memory
- *
- * @v image Executable/loadable image
- * @v type Executable/loadable image type
- * @ret rc Return status code
- */
-static int image_load_type ( struct image *image, struct image_type *type ) {
- int rc;
-
- /* Check image is actually loadable */
- if ( ! type->load )
- return -ENOEXEC;
-
- /* Try the image loader */
- if ( ( rc = type->load ( image ) ) != 0 ) {
- DBGC ( image, "IMAGE %p could not load as %s: %s\n",
- image, type->name, strerror ( rc ) );
- return rc;
- }
-
- /* Flag as loaded */
- image->flags |= IMAGE_LOADED;
- return 0;
-}
-
-/**
- * Load executable/loadable image into memory
- *
- * @v image Executable/loadable image
- * @ret rc Return status code
- */
-int image_load ( struct image *image ) {
-
- assert ( image->type != NULL );
-
- return image_load_type ( image, image->type );
-}
-
-/**
- * Autodetect image type and load executable/loadable image into memory
- *
- * @v image Executable/loadable image
- * @ret rc Return status code
- */
-int image_autoload ( struct image *image ) {
- struct image_type *type;
- int rc;
-
- /* If image already has a type, use it */
- if ( image->type )
- return image_load ( image );
-
- /* Otherwise probe for a suitable type */
- for_each_table_entry ( type, IMAGE_TYPES ) {
- DBGC ( image, "IMAGE %p trying type %s\n", image, type->name );
- rc = image_load_type ( image, type );
- if ( image->type == NULL )
- continue;
- return rc;
- }
-
- DBGC ( image, "IMAGE %p format not recognised\n", image );
- return -ENOEXEC;
-}
-
-/**
- * Execute loaded image
- *
- * @v image Loaded image
- * @ret rc Return status code
- */
-int image_exec ( struct image *image ) {
- struct image *replacement;
- struct uri *old_cwuri;
- int rc;
-
- /* Image must be loaded first */
- if ( ! ( image->flags & IMAGE_LOADED ) ) {
- DBGC ( image, "IMAGE %p could not execute: not loaded\n",
- image );
- return -ENOTTY;
- }
-
- assert ( image->type != NULL );
-
- /* Check that image is actually executable */
- if ( ! image->type->exec )
- return -ENOEXEC;
-
- /* Switch current working directory to be that of the image itself */
- old_cwuri = uri_get ( cwuri );
- churi ( image->uri );
-
- /* Take out a temporary reference to the image. This allows
- * the image to unregister itself if necessary, without
- * automatically freeing itself.
- */
- image_get ( image );
-
- /* Try executing the image */
- if ( ( rc = image->type->exec ( image ) ) != 0 ) {
- DBGC ( image, "IMAGE %p could not execute: %s\n",
- image, strerror ( rc ) );
- /* Do not return yet; we still have clean-up to do */
- }
-
- /* Pick up replacement image before we drop the original
- * image's temporary reference.
- */
- replacement = image->replacement;
-
- /* Drop temporary reference to the original image */
- image_put ( image );
-
- /* Reset current working directory */
- churi ( old_cwuri );
- uri_put ( old_cwuri );
-
- /* Tail-recurse into replacement image, if one exists */
- if ( replacement ) {
- DBGC ( image, "IMAGE %p replacing self with IMAGE %p\n",
- image, replacement );
- if ( ( rc = image_exec ( replacement ) ) != 0 )
- return rc;
- }
-
- return rc;
-}
-
-/**
- * Register and autoload an image
- *
- * @v image Image
- * @ret rc Return status code
- */
-int register_and_autoload_image ( struct image *image ) {
- int rc;
-
- if ( ( rc = register_image ( image ) ) != 0 )
- return rc;
-
- if ( ( rc = image_autoload ( image ) ) != 0 )
- return rc;
-
- return 0;
-}
-
-/**
- * Register and autoexec an image
- *
- * @v image Image
- * @ret rc Return status code
- */
-int register_and_autoexec_image ( struct image *image ) {
- int rc;
-
- if ( ( rc = register_and_autoload_image ( image ) ) != 0 )
- return rc;
-
- if ( ( rc = image_exec ( image ) ) != 0 )
- return rc;
-
- return 0;
-}