tools: remove fs-front/fs-back

Its access controls are really not OK.  In particular, it's not good for
libxl, which stores per-VM config blobs in a directory that is exported
to all VMs.

This will break stub-qemu save/restore, which is the only user of
fs-front that I'm aware of, but:
 - It's currently broken anyway (fs-back isn't run by default and crashes
   if it is run manually); and
 - Stefano has a plan to plumb qemu save records through a dedicated
   console channel instead.

Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>

2 files changed, 1 insertions, 56 deletions

diff --git a/extras/mini-os/include/fbfront.h b/extras/mini-os/include/fbfront.h
index 7e29b4c974..d4851a4e98 100644
--- a/extras/mini-os/include/fbfront.h
+++ b/extras/mini-os/include/fbfront.h
@@ -1,5 +1,6 @@
 #include <xen/io/kbdif.h>
 #include <xen/io/fbif.h>
+#include <mini-os/semaphore.h>
 #include <mini-os/wait.h>
 
 /* from <linux/input.h> */
diff --git a/extras/mini-os/include/fs.h b/extras/mini-os/include/fs.h
deleted file mode 100644
index 2f91f8d264..0000000000
--- a/extras/mini-os/include/fs.h
+++ /dev/null
@@ -1,56 +0,0 @@
-#ifndef __FS_H__
-#define __FS_H__
-
-#include <xen/io/fsif.h>
-#include <mini-os/semaphore.h>
-#include <mini-os/types.h>
-
-#define FSIF_RING_SIZE_ORDER   1
-#define FSIF_RING_SIZE_PAGES   (1<<FSIF_RING_SIZE_ORDER)
-
-struct fs_import 
-{
-    domid_t dom_id;                 /* dom id of the exporting domain       */ 
-    uint16_t export_id;             /* export id (exporting dom specific)   */
-    uint16_t import_id;             /* import id (specific to this domain)  */ 
-    struct minios_list_head list;   /* list of all imports                  */
-    unsigned int nr_entries;        /* Number of entries in rings & request
-                                       array                                */
-    struct fsif_front_ring ring;    /* frontend ring (contains shared ring) */
-    uint32_t gnt_refs[FSIF_RING_SIZE_PAGES];  /* grant references to the shared ring  */
-    evtchn_port_t local_port;       /* local event channel port             */
-    char *backend;                  /* XenBus location of the backend       */
-    struct fs_request *requests;    /* Table of requests                    */
-    unsigned short *freelist;       /* List of free request ids             */
-    struct semaphore reqs_sem;      /* Accounts requests resource           */
-};
-
-extern struct fs_import *fs_import;
-
-void init_fs_frontend(void);
-
-int fs_open(struct fs_import *import, char *file);
-int fs_close(struct fs_import *import, int fd);
-ssize_t fs_read(struct fs_import *import, int fd, void *buf, 
-                ssize_t len, ssize_t offset);
-ssize_t fs_write(struct fs_import *import, int fd, void *buf, 
-                 ssize_t len, ssize_t offset);
-int fs_stat(struct fs_import *import, 
-            int fd, 
-            struct fsif_stat_response *stat);
-int fs_truncate(struct fs_import *import, 
-                int fd, 
-                int64_t length);
-int fs_remove(struct fs_import *import, char *file);
-int fs_rename(struct fs_import *import, 
-              char *old_file_name, 
-              char *new_file_name);
-int fs_create(struct fs_import *import, char *name, 
-              int8_t directory, int32_t mode);
-char** fs_list(struct fs_import *import, char *name, 
-               int32_t offset, int32_t *nr_files, int *has_more);
-int fs_chmod(struct fs_import *import, int fd, int32_t mode);
-int64_t fs_space(struct fs_import *import, char *location);
-int fs_sync(struct fs_import *import, int fd);
-
-#endif