func_sysinfo.c File Reference

#include "asterisk.h"
#include <sys/sysinfo.h>
#include "asterisk/module.h"
#include "asterisk/pbx.h"

Include dependency graph for func_sysinfo.c:

Go to the source code of this file.

Functions
static void	__reg_module (void)
static void	__unreg_module (void)
struct ast_module *	AST_MODULE_SELF_SYM (void)
static int	load_module (void)
static int	sysinfo_helper (struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
static int	unload_module (void)

Variables
static struct ast_module_info	__mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "System information related functions" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, .support_level = AST_MODULE_SUPPORT_CORE, }
static const struct ast_module_info *	ast_module_info = &__mod_info
static struct ast_custom_function	sysinfo_function

Detailed Description

SYSINFO function to return various system data.

Note

Inspiration and Guidance from Russell

Author

Jeff Peeler

Definition in file func_sysinfo.c.

Function Documentation

__reg_module()

static void __reg_module ( void  )

static

Definition at line 153 of file func_sysinfo.c.

__unreg_module()

static void __unreg_module ( void  )

static

Definition at line 153 of file func_sysinfo.c.

AST_MODULE_SELF_SYM()

struct ast_module * AST_MODULE_SELF_SYM

(

void

)

Definition at line 153 of file func_sysinfo.c.

load_module()

static int load_module ( void  )

static

Definition at line 148 of file func_sysinfo.c.

{
    return ast_custom_function_register(&sysinfo_function);
}

References ast_custom_function_register, and sysinfo_function.

sysinfo_helper()

static int sysinfo_helper ( struct ast_channel *  chan, const char *  cmd, char *  data, char *  buf, size_t  len  )

static

Definition at line 92 of file func_sysinfo.c.

{
#if defined(HAVE_SYSINFO)
    struct sysinfo sys_info;
    if (sysinfo(&sys_info)) {
        ast_log(LOG_ERROR, "FAILED to retrieve system information\n");
        return -1;
    }
#endif
    if (ast_strlen_zero(data)) {
        ast_log(LOG_WARNING, "Syntax: ${SYSINFO(<parameter>)} - missing argument!)\n");
        return -1;
    } else if (!strcasecmp("loadavg", data)) {
        double curloadavg;
        getloadavg(&curloadavg, 1);
        snprintf(buf, len, "%f", curloadavg);
    } else if (!strcasecmp("numcalls", data)) {
        snprintf(buf, len, "%d", ast_active_calls());
    }
#if defined(HAVE_SYSINFO)
    else if (!strcasecmp("uptime", data)) {             /* in hours */
        snprintf(buf, len, "%ld", sys_info.uptime/3600);
    } else if (!strcasecmp("totalram", data)) {         /* in KiB */
        snprintf(buf, len, "%lu",(sys_info.totalram * sys_info.mem_unit)/1024);
    } else if (!strcasecmp("freeram", data)) {          /* in KiB */
        snprintf(buf, len, "%lu",(sys_info.freeram * sys_info.mem_unit)/1024);
    } else if (!strcasecmp("bufferram", data)) {        /* in KiB */
        snprintf(buf, len, "%lu",(sys_info.bufferram * sys_info.mem_unit)/1024);
    } else if (!strcasecmp("totalswap", data)) {        /* in KiB */
        snprintf(buf, len, "%lu",(sys_info.totalswap * sys_info.mem_unit)/1024);
    } else if (!strcasecmp("freeswap", data)) {         /* in KiB */
        snprintf(buf, len, "%lu",(sys_info.freeswap * sys_info.mem_unit)/1024);
    } else if (!strcasecmp("numprocs", data)) {
        snprintf(buf, len, "%d", sys_info.procs);
    }
#endif
    else {
        ast_log(LOG_ERROR, "Unknown sysinfo parameter type '%s'.\n", data);
        return -1;
    }
 
    return 0;
}

References ast_active_calls(), ast_log, ast_strlen_zero(), buf, getloadavg(), len(), LOG_ERROR, and LOG_WARNING.

unload_module()

static int unload_module ( void  )

static

Definition at line 143 of file func_sysinfo.c.

{
    return ast_custom_function_unregister(&sysinfo_function);
}

References ast_custom_function_unregister(), and sysinfo_function.

Variable Documentation

__mod_info

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "System information related functions" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, .support_level = AST_MODULE_SUPPORT_CORE, }

static

Definition at line 153 of file func_sysinfo.c.

ast_module_info

const struct ast_module_info* ast_module_info = &__mod_info

static

Definition at line 153 of file func_sysinfo.c.

sysinfo_function

struct ast_custom_function sysinfo_function

static

Initial value:

= {
    .name = "SYSINFO",
    .read = sysinfo_helper,
    .read_max = 22,
}

Definition at line 137 of file func_sysinfo.c.

Referenced by load_module(), and unload_module().