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/>.
25 static bool net_g_lock_init(TALLOC_CTX *mem_ctx,
26 struct tevent_context **pev,
27 struct messaging_context **pmsg,
28 struct g_lock_ctx **pg_ctx)
30 struct tevent_context *ev = NULL;
31 struct messaging_context *msg = NULL;
32 struct g_lock_ctx *g_ctx = NULL;
34 ev = tevent_context_init(mem_ctx);
36 d_fprintf(stderr, "ERROR: could not init event context\n");
39 msg = messaging_init(mem_ctx, procid_self(), ev);
41 d_fprintf(stderr, "ERROR: could not init messaging context\n");
44 g_ctx = g_lock_ctx_init(mem_ctx, msg);
46 d_fprintf(stderr, "ERROR: could not init g_lock context\n");
61 struct net_g_lock_do_state {
66 static void net_g_lock_do_fn(void *private_data)
68 struct net_g_lock_do_state *state =
69 (struct net_g_lock_do_state *)private_data;
70 state->result = system(state->cmd);
73 static int net_g_lock_do(struct net_context *c, int argc, const char **argv)
75 struct net_g_lock_do_state state;
76 const char *name, *cmd;
81 d_printf("Usage: net g_lock do <lockname> <timeout> "
86 timeout = atoi(argv[1]);
92 status = g_lock_do(name, G_LOCK_WRITE,
93 timeval_set(timeout / 1000, timeout % 1000),
94 procid_self(), net_g_lock_do_fn, &state);
95 if (!NT_STATUS_IS_OK(status)) {
96 d_fprintf(stderr, "ERROR: g_lock_do failed: %s\n",
100 if (state.result == -1) {
101 d_fprintf(stderr, "ERROR: system() returned %s\n",
105 d_fprintf(stderr, "command returned %d\n", state.result);
111 static int net_g_lock_dump_fn(struct server_id pid, enum g_lock_type lock_type,
116 pidstr = procid_str(talloc_tos(), &pid);
117 d_printf("%s: %s (%s)\n", pidstr,
118 (lock_type & 1) ? "WRITE" : "READ",
119 (lock_type & G_LOCK_PENDING) ? "pending" : "holder");
124 static int net_g_lock_dump(struct net_context *c, int argc, const char **argv)
126 struct tevent_context *ev = NULL;
127 struct messaging_context *msg = NULL;
128 struct g_lock_ctx *g_ctx = NULL;
133 d_printf("Usage: net g_lock dump <lockname>\n");
137 if (!net_g_lock_init(talloc_tos(), &ev, &msg, &g_ctx)) {
141 status = g_lock_dump(g_ctx, argv[0], net_g_lock_dump_fn, NULL);
151 static int net_g_lock_locks_fn(const char *name, void *private_data)
153 d_printf("%s\n", name);
157 static int net_g_lock_locks(struct net_context *c, int argc, const char **argv)
159 struct tevent_context *ev = NULL;
160 struct messaging_context *msg = NULL;
161 struct g_lock_ctx *g_ctx = NULL;
165 d_printf("Usage: net g_lock locks\n");
169 if (!net_g_lock_init(talloc_tos(), &ev, &msg, &g_ctx)) {
173 ret = g_lock_locks(g_ctx, net_g_lock_locks_fn, NULL);
181 int net_g_lock(struct net_context *c, int argc, const char **argv)
183 struct functable func[] = {
188 N_("Execute a shell command under a lock"),
189 N_("net g_lock do <lock name> <timeout> <command>\n")
195 N_("List all locknames"),
196 N_("net g_lock locks\n")
202 N_("Dump a g_lock locking table"),
203 N_("net g_lock dump <lock name>\n")
205 {NULL, NULL, 0, NULL, NULL}
208 return net_run_function(c, argc, argv, "net g_lock", func);