2 * Samba Unix/Linux SMB client library
3 * Interface to the g_lock facility
4 * Copyright (C) Volker Lendecke 2009
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 static bool net_g_lock_init(TALLOC_CTX
*mem_ctx
,
25 struct tevent_context
**pev
,
26 struct messaging_context
**pmsg
,
27 struct g_lock_ctx
**pg_ctx
)
29 struct tevent_context
*ev
= NULL
;
30 struct messaging_context
*msg
= NULL
;
31 struct g_lock_ctx
*g_ctx
= NULL
;
33 ev
= tevent_context_init(talloc_tos());
35 d_fprintf(stderr
, "ERROR: could not init event context\n");
38 msg
= messaging_init(talloc_tos(), procid_self(), ev
);
40 d_fprintf(stderr
, "ERROR: could not init messaging context\n");
43 g_ctx
= g_lock_ctx_init(talloc_tos(), msg
);
45 d_fprintf(stderr
, "ERROR: could not init g_lock context\n");
61 static int net_g_lock_do(struct net_context
*c
, int argc
, const char **argv
)
63 struct tevent_context
*ev
= NULL
;
64 struct messaging_context
*msg
= NULL
;
65 struct g_lock_ctx
*g_ctx
= NULL
;
66 const char *name
, *cmd
;
73 d_printf("Usage: net g_lock do <lockname> <timeout> "
78 timeout
= atoi(argv
[1]);
81 if (!net_g_lock_init(talloc_tos(), &ev
, &msg
, &g_ctx
)) {
85 status
= g_lock_lock(g_ctx
, name
, G_LOCK_WRITE
,
86 timeval_set(timeout
/ 1000, timeout
% 1000));
87 if (!NT_STATUS_IS_OK(status
)) {
88 d_fprintf(stderr
, "ERROR: Could not get lock: %s\n",
97 d_fprintf(stderr
, "ERROR: system() returned %s\n",
101 d_fprintf(stderr
, "command returned %d\n", res
);
107 g_lock_unlock(g_ctx
, name
);
115 static int net_g_lock_dump_fn(struct server_id pid
, enum g_lock_type lock_type
,
120 pidstr
= procid_str(talloc_tos(), &pid
);
121 d_printf("%s: %s (%s)\n", pidstr
,
122 (lock_type
& 1) ? "WRITE" : "READ",
123 (lock_type
& G_LOCK_PENDING
) ? "pending" : "holder");
128 static int net_g_lock_dump(struct net_context
*c
, int argc
, const char **argv
)
130 struct tevent_context
*ev
= NULL
;
131 struct messaging_context
*msg
= NULL
;
132 struct g_lock_ctx
*g_ctx
= NULL
;
137 d_printf("Usage: net g_lock dump <lockname>\n");
141 if (!net_g_lock_init(talloc_tos(), &ev
, &msg
, &g_ctx
)) {
145 status
= g_lock_dump(g_ctx
, argv
[0], net_g_lock_dump_fn
, NULL
);
155 static int net_g_lock_locks_fn(const char *name
, void *private_data
)
157 d_printf("%s\n", name
);
161 static int net_g_lock_locks(struct net_context
*c
, int argc
, const char **argv
)
163 struct tevent_context
*ev
= NULL
;
164 struct messaging_context
*msg
= NULL
;
165 struct g_lock_ctx
*g_ctx
= NULL
;
169 d_printf("Usage: net g_lock locks\n");
173 if (!net_g_lock_init(talloc_tos(), &ev
, &msg
, &g_ctx
)) {
177 ret
= g_lock_locks(g_ctx
, net_g_lock_locks_fn
, NULL
);
185 int net_g_lock(struct net_context
*c
, int argc
, const char **argv
)
187 struct functable func
[] = {
192 N_("Execute a shell command under a lock"),
193 N_("net g_lock do <lock name> <timeout> <command>\n")
199 N_("List all locknames"),
200 N_("net g_lock locks\n")
206 N_("Dump a g_lock locking table"),
207 N_("net g_lock dump <lock name>\n")
209 {NULL
, NULL
, 0, NULL
, NULL
}
212 return net_run_function(c
, argc
, argv
, "net g_lock", func
);