xenstore.h File Reference

XenStore interface. More...

#include <ipxe/xen.h>

Go to the source code of this file.

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
	FILE_SECBOOT (PERMITTED)
	__attribute__ ((sentinel)) int xenstore_read(struct xen_hypervisor *xen
char unsigned long const char unsigned long char size_t void	xenstore_dump (struct xen_hypervisor *xen, const char *key)
	Dump XenStore directory contents (for debugging)

Variables
char **	value
char unsigned long *	num
char unsigned long const char unsigned long char **	children
char unsigned long const char unsigned long char size_t *	len

Detailed Description

XenStore interface.

Definition in file xenstore.h.

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

FILE_SECBOOT()

FILE_SECBOOT

(

PERMITTED

)

__attribute__()

__attribute__ ( (sentinel) )

extern

xenstore_dump()

char unsigned long const char unsigned long char size_t void xenstore_dump ( struct xen_hypervisor * xen, const char * key )

extern

Dump XenStore directory contents (for debugging)

Parameters

xen	Xen hypervisor
key	Key

Definition at line 521 of file xenstore.c.

                                                                   {
        char *value;
        char *children;
        char *child;
        char *child_key;
        size_t len;
        int rc;
 
        /* Try to dump current key as a value */
        if ( ( rc = xenstore_read ( xen, &value, key, NULL ) ) == 0 ) {
                DBGC ( xen, "%s = \"%s\"\n", key, value );
                free ( value );
        }
 
        /* Try to recurse into each child in turn */
        if ( ( rc = xenstore_directory ( xen, &children, &len, key,
                                         NULL ) ) == 0 ) {
                for ( child = children ; child < ( children + len ) ;
                      child += ( strlen ( child ) + 1 /* NUL */ ) ) {
 
                        /* Construct child key */
                        if ( asprintf ( &child_key, "%s/%s", key, child ) < 0 ){
                                DBGC ( xen, "XENSTORE could not allocate child "
                                       "key \"%s/%s\"\n", key, child );
                                rc = -ENOMEM;
                                break;
                        }
 
                        /* Recurse into child key, continuing on error */
                        xenstore_dump ( xen, child_key );
                        free ( child_key );
                }
                free ( children );
        }
}

References asprintf(), children, DBGC, ENOMEM, free, key, len, NULL, rc, strlen(), value, xenstore_directory(), xenstore_dump(), and xenstore_read().

Referenced by xenstore_dump().

Variable Documentation

value

char unsigned long const char* value

Definition at line 16 of file xenstore.h.

num

char unsigned long const char unsigned long num

Definition at line 18 of file xenstore.h.

children

char unsigned long const char unsigned long char** children

Definition at line 26 of file xenstore.h.

Referenced by efi_driver_stop(), xenbus_probe_type(), xenstore_directory(), and xenstore_dump().

len

char unsigned long const char unsigned long char size_t* len

Definition at line 26 of file xenstore.h.