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/*
Common routines between Xen store user library and daemon.
Copyright (C) 2005 Rusty Russell IBM Corporation
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef XENSTORE_LIB_H
#define XENSTORE_LIB_H
#include <stddef.h>
#include <stdbool.h>
#include <limits.h>
#include <errno.h>
#include <stdint.h>
#include <xen/io/xs_wire.h>
struct xs_permissions
{
unsigned int id;
unsigned int perms; /* Bitmask of permissions. */
#define XS_PERM_NONE 0x00
#define XS_PERM_READ 0x01
#define XS_PERM_WRITE 0x02
/* Internal use. */
#define XS_PERM_ENOENT_OK 0x04
#define XS_PERM_OWNER 0x08
#define XS_PERM_IGNORE 0x10
};
/* Each 10 bits takes ~ 3 digits, plus one, plus one for nul terminator. */
#define MAX_STRLEN(x) ((sizeof(x) * CHAR_BIT + CHAR_BIT-1) / 10 * 3 + 2)
/* Path for various daemon things: env vars can override. */
const char *xs_daemon_rundir(void);
const char *xs_daemon_socket(void);
const char *xs_daemon_socket_ro(void);
/* Simple write function: loops for you. */
bool xs_write_all(int fd, const void *data, unsigned int len);
/* Convert strings to permissions. False if a problem. */
bool xs_strings_to_perms(struct xs_permissions *perms, unsigned int num,
const char *strings);
#endif /* XENSTORE_LIB_H */
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