Archipelago » qemu

/*

 * Virtio 9p

 *

 * Copyright IBM, Corp. 2010

 *

 * Authors:

 *  Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>

 *

 * This work is licensed under the terms of the GNU GPL, version 2.  See

 * the COPYING file in the top-level directory.

 *

 */

#ifndef _QEMU_VIRTIO_9P_XATTR_H

#define _QEMU_VIRTIO_9P_XATTR_H

#include <attr/xattr.h>

typedef struct xattr_operations

{

    const char *name;

    ssize_t (*getxattr)(FsContext *ctx, const char *path,

                        const char *name, void *value, size_t size);

    ssize_t (*listxattr)(FsContext *ctx, const char *path,

                         char *name, void *value, size_t size);

    int (*setxattr)(FsContext *ctx, const char *path, const char *name,

                    void *value, size_t size, int flags);

    int (*removexattr)(FsContext *ctx,

                       const char *path, const char *name);

} XattrOperations;

extern XattrOperations mapped_user_xattr;

extern XattrOperations passthrough_user_xattr;

extern XattrOperations mapped_pacl_xattr;

extern XattrOperations mapped_dacl_xattr;

extern XattrOperations passthrough_acl_xattr;

extern XattrOperations none_acl_xattr;

extern XattrOperations *mapped_xattr_ops[];

extern XattrOperations *passthrough_xattr_ops[];

extern XattrOperations *none_xattr_ops[];

ssize_t v9fs_get_xattr(FsContext *ctx, const char *path, const char *name,

                       void *value, size_t size);

ssize_t v9fs_list_xattr(FsContext *ctx, const char *path, void *value,

                        size_t vsize);

int v9fs_set_xattr(FsContext *ctx, const char *path, const char *name,

                          void *value, size_t size, int flags);

int v9fs_remove_xattr(FsContext *ctx, const char *path, const char *name);

ssize_t pt_listxattr(FsContext *ctx, const char *path, char *name, void *value,

                     size_t size);

static inline ssize_t pt_getxattr(FsContext *ctx, const char *path,

                                  const char *name, void *value, size_t size)

{

    char buffer[PATH_MAX];

    return lgetxattr(rpath(ctx, path, buffer), name, value, size);

}

static inline int pt_setxattr(FsContext *ctx, const char *path,

                              const char *name, void *value,

                              size_t size, int flags)

{

    char buffer[PATH_MAX];

    return lsetxattr(rpath(ctx, path, buffer), name, value, size, flags);

}

static inline int pt_removexattr(FsContext *ctx,

                                 const char *path, const char *name)

{

    char buffer[PATH_MAX];

    return lremovexattr(rpath(ctx, path, buffer), name);

}

static inline ssize_t notsup_getxattr(FsContext *ctx, const char *path,

                                      const char *name, void *value,

                                      size_t size)

{

    errno = ENOTSUP;

    return -1;

}

static inline int notsup_setxattr(FsContext *ctx, const char *path,

                                  const char *name, void *value,

                                  size_t size, int flags)

{

    errno = ENOTSUP;

    return -1;

}

static inline ssize_t notsup_listxattr(FsContext *ctx, const char *path,

                                       char *name, void *value, size_t size)

{

    return 0;

}

static inline int notsup_removexattr(FsContext *ctx,

                                     const char *path, const char *name)

{

    errno = ENOTSUP;

    return -1;

}

#endif