ia64/xen-unstable

view tools/xenstore/xs_lib.h @ 6538:84ee014ebd41

Merge xen-vtx-unstable.hg
author adsharma@los-vmm.sc.intel.com
date Wed Aug 17 12:34:38 2005 -0800 (2005-08-17)
parents 23979fb12c49 f5b8d2720d6c
children 99914b54f7bf
line source
1 /*
2 Common routines between Xen store user library and daemon.
3 Copyright (C) 2005 Rusty Russell IBM Corporation
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
20 #ifndef _XS_LIB_H
21 #define _XS_LIB_H
23 #include <stdbool.h>
24 #include <limits.h>
25 #include <xc.h>
27 /* Bitmask of permissions. */
28 enum xs_perm_type {
29 XS_PERM_NONE = 0,
30 XS_PERM_READ = 1,
31 XS_PERM_WRITE = 2,
32 /* Internal use. */
33 XS_PERM_ENOENT_OK = 4,
34 XS_PERM_OWNER = 8,
35 };
37 struct xs_permissions
38 {
39 domid_t id;
40 enum xs_perm_type perms;
41 };
43 /* Each 10 bits takes ~ 3 digits, plus one, plus one for nul terminator. */
44 #define MAX_STRLEN(x) ((sizeof(x) * CHAR_BIT + CHAR_BIT-1) / 10 * 3 + 2)
46 /* Path for various daemon things: env vars can override. */
47 const char *xs_daemon_socket(void);
48 const char *xs_daemon_socket_ro(void);
49 const char *xs_daemon_store(void);
50 const char *xs_daemon_transactions(void);
52 /* Simple write function: loops for you. */
53 bool xs_write_all(int fd, const void *data, unsigned int len);
55 /* Convert strings to permissions. False if a problem. */
56 bool xs_strings_to_perms(struct xs_permissions *perms, unsigned int num,
57 const char *strings);
59 /* Convert permissions to a string (up to len MAX_STRLEN(domid_t)+1). */
60 bool xs_perm_to_string(const struct xs_permissions *perm, char *buffer);
62 /* Given a string and a length, count how many strings (nul terms). */
63 unsigned int xs_count_strings(const char *strings, unsigned int len);
65 #endif /* _XS_LIB_H */