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Added IMAGE_LOADED flag and find_image()

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This commit is contained in:
Michael Brown 2007-01-12 06:03:02 +00:00
parent 8b6eaf3c82
commit b9fea9cbac
2 changed files with 34 additions and 0 deletions
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27
src/core/image.c
View File

@ -72,6 +72,23 @@ void unregister_image ( struct image *image ) {
DBGC ( image, "IMAGE %p unregistered\n", 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
*
@ -89,6 +106,7 @@ int image_load ( struct image *image ) {
return rc;
}
image->flags |= IMAGE_LOADED;
return 0;
}
@ -111,6 +129,7 @@ int image_autoload ( struct image *image ) {
image, image->type->name, strerror ( rc ) );
return rc;
}
image->flags |= IMAGE_LOADED;
return 0;
}
@ -127,8 +146,16 @@ int image_autoload ( struct image *image ) {
int image_exec ( struct image *image ) {
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 );
/* Try executing the image */
if ( ( rc = image->type->exec ( image ) ) != 0 ) {
DBGC ( image, "IMAGE %p could not execute: %s\n",
image, strerror ( rc ) );

7
src/include/gpxe/image.h
View File

@ -45,8 +45,14 @@ struct image {
/** Image type, if known */
struct image_type *type;
/** Flags */
unsigned int flags;
};
/** Image is loaded */
#define IMAGE_LOADED 0x0001
/** An executable or loadable image type */
struct image_type {
/** Name of this image type */
@ -102,6 +108,7 @@ extern struct list_head images;
extern int register_image ( struct image *image );
extern void unregister_image ( struct image *image );
struct image * find_image ( const char *name );
extern int image_load ( struct image *image );
extern int image_autoload ( struct image *image );
extern int image_exec ( struct image *image );