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Keir Fraser
a9c83dc720
That permits to reduce the amount of difference with upstream. Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
57 lines
2.4 KiB
C
57 lines
2.4 KiB
C
#ifndef __FS_H__
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#define __FS_H__
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#include <xen/io/fsif.h>
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#include <mini-os/semaphore.h>
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#include <mini-os/types.h>
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#define FSIF_RING_SIZE_ORDER 1
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#define FSIF_RING_SIZE_PAGES (1<<FSIF_RING_SIZE_ORDER)
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struct fs_import
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{
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domid_t dom_id; /* dom id of the exporting domain */
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u16 export_id; /* export id (exporting dom specific) */
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u16 import_id; /* import id (specific to this domain) */
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struct minios_list_head list; /* list of all imports */
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unsigned int nr_entries; /* Number of entries in rings & request
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array */
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struct fsif_front_ring ring; /* frontend ring (contains shared ring) */
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u32 gnt_refs[FSIF_RING_SIZE_PAGES]; /* grant references to the shared ring */
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evtchn_port_t local_port; /* local event channel port */
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char *backend; /* XenBus location of the backend */
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struct fs_request *requests; /* Table of requests */
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unsigned short *freelist; /* List of free request ids */
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struct semaphore reqs_sem; /* Accounts requests resource */
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};
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extern struct fs_import *fs_import;
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void init_fs_frontend(void);
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int fs_open(struct fs_import *import, char *file);
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int fs_close(struct fs_import *import, int fd);
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ssize_t fs_read(struct fs_import *import, int fd, void *buf,
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ssize_t len, ssize_t offset);
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ssize_t fs_write(struct fs_import *import, int fd, void *buf,
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ssize_t len, ssize_t offset);
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int fs_stat(struct fs_import *import,
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int fd,
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struct fsif_stat_response *stat);
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int fs_truncate(struct fs_import *import,
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int fd,
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int64_t length);
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int fs_remove(struct fs_import *import, char *file);
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int fs_rename(struct fs_import *import,
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char *old_file_name,
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char *new_file_name);
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int fs_create(struct fs_import *import, char *name,
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int8_t directory, int32_t mode);
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char** fs_list(struct fs_import *import, char *name,
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int32_t offset, int32_t *nr_files, int *has_more);
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int fs_chmod(struct fs_import *import, int fd, int32_t mode);
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int64_t fs_space(struct fs_import *import, char *location);
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int fs_sync(struct fs_import *import, int fd);
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#endif
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