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(mem_ctx);
35 d_fprintf(stderr, "ERROR: could not init event context\n");
38 msg = messaging_init(mem_ctx, procid_self(), ev);
40 d_fprintf(stderr, "ERROR: could not init messaging context\n");
43 g_ctx = g_lock_ctx_init(mem_ctx, msg);
45 d_fprintf(stderr, "ERROR: could not init g_lock context\n");
60 struct net_g_lock_do_state {
65 static void net_g_lock_do_fn(void *private_data)
67 struct net_g_lock_do_state *state =
68 (struct net_g_lock_do_state *)private_data;
69 state->result = system(state->cmd);
72 static int net_g_lock_do(struct net_context *c, int argc, const char **argv)
74 struct net_g_lock_do_state state;
75 const char *name, *cmd;
80 d_printf("Usage: net g_lock do <lockname> <timeout> "
85 timeout = atoi(argv[1]);
91 status = g_lock_do(name, G_LOCK_WRITE,
92 timeval_set(timeout / 1000, timeout % 1000),
93 procid_self(), net_g_lock_do_fn, &state);
94 if (!NT_STATUS_IS_OK(status)) {
95 d_fprintf(stderr, "ERROR: g_lock_do failed: %s\n",
99 if (state.result == -1) {
100 d_fprintf(stderr, "ERROR: system() returned %s\n",
104 d_fprintf(stderr, "command returned %d\n", state.result);
110 static int net_g_lock_dump_fn(struct server_id pid, enum g_lock_type lock_type,
115 pidstr = procid_str(talloc_tos(), &pid);
116 d_printf("%s: %s (%s)\n", pidstr,
117 (lock_type & 1) ? "WRITE" : "READ",
118 (lock_type & G_LOCK_PENDING) ? "pending" : "holder");
123 static int net_g_lock_dump(struct net_context *c, int argc, const char **argv)
125 struct tevent_context *ev = NULL;
126 struct messaging_context *msg = NULL;
127 struct g_lock_ctx *g_ctx = NULL;
132 d_printf("Usage: net g_lock dump <lockname>\n");
136 if (!net_g_lock_init(talloc_tos(), &ev, &msg, &g_ctx)) {
140 status = g_lock_dump(g_ctx, argv[0], net_g_lock_dump_fn, NULL);
150 static int net_g_lock_locks_fn(const char *name, void *private_data)
152 d_printf("%s\n", name);
156 static int net_g_lock_locks(struct net_context *c, int argc, const char **argv)
158 struct tevent_context *ev = NULL;
159 struct messaging_context *msg = NULL;
160 struct g_lock_ctx *g_ctx = NULL;
164 d_printf("Usage: net g_lock locks\n");
168 if (!net_g_lock_init(talloc_tos(), &ev, &msg, &g_ctx)) {
172 ret = g_lock_locks(g_ctx, net_g_lock_locks_fn, NULL);
180 int net_g_lock(struct net_context *c, int argc, const char **argv)
182 struct functable func[] = {
187 N_("Execute a shell command under a lock"),
188 N_("net g_lock do <lock name> <timeout> <command>\n")
194 N_("List all locknames"),
195 N_("net g_lock locks\n")
201 N_("Dump a g_lock locking table"),
202 N_("net g_lock dump <lock name>\n")
204 {NULL, NULL, 0, NULL, NULL}
207 return net_run_function(c, argc, argv, "net g_lock", func);