File: shm_init.c

package info (click to toggle)
kamailio 4.2.0-2+deb8u3
  • links: PTS, VCS
  • area: main
  • in suites: jessie
  • size: 56,276 kB
  • sloc: ansic: 552,836; xml: 166,484; sh: 8,659; makefile: 7,676; sql: 6,235; perl: 3,487; yacc: 3,428; python: 1,457; cpp: 1,219; php: 1,047; java: 449; pascal: 194; cs: 40; awk: 27
file content (79 lines) | stat: -rw-r--r-- 2,051 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
/* 
 * $Id$
 * 
 * Copyright (C) 2010 iptelorg GmbH
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
/*
 * shm_init.c
 */
/*
 * History:
 * --------
 *  2010-01-10  initial version (andrei)
*/

#include "shm_init.h"
#include "mem/mem.h"
#include "globals.h"

static int shm_init = 0;


/** check if shm is initialized.
 * @return 1 if initialized, 0 if not
 */
int shm_initialized()
{
	return shm_init;
}



#ifdef SHM_MEM
/** init shm mem.
 * @return 0 on success, < 0 on error
 * it _must_ be called:
 *  - after the shm_mem_size is known
 *  - after shm_force_alloc is known (mlock_pages should happen at a later
 *     point so it's not yet needed here)
 *  - after the user is known (so that in the SYSV sems case the sems will
 *     have the correct euid)
 *  - before init_timer and init_tcp
 * --andrei
 *
 * Global vars used: shm_mem_size, shm_force_alloc, user & uid.
 * Side effects: it might set uid, gid and shm_mem_size.
 */
int init_shm()
{
	/* set uid if user is set */
	if (user && uid == 0){
		if (user2uid(&uid, &gid, user)<0){
			fprintf(stderr, "bad user name/uid number: -u %s\n", user);
			goto error;
		}
	}
	if (shm_mem_size == 0)
		shm_mem_size=SHM_MEM_SIZE * 1024 * 1024;
	if (init_shm_mallocs(shm_force_alloc)==-1)
		goto error;
	shm_init=1;
	return 0;
error:
	return -1;
}
#endif /* SHM_MEM */

/* vi: set ts=4 sw=4 tw=79:ai:cindent: */