ifiter_sysctl.c File Reference

Obtain the list of network interfaces using sysctl. See TCP/IP Illustrated Volume 2, sections 19.8, 19.14, and 19.16. More...

#include <sys/param.h>
#include <sys/sysctl.h>
#include <net/route.h>
#include <net/if_dl.h>

Go to the source code of this file.

Data Structures
struct	isc_interfaceiter
	Iterator structure. More...
Defines
#define	ROUNDUP(a)
#define	IFITER_MAGIC   ISC_MAGIC('I', 'F', 'I', 'S')
#define	VALID_IFITER(t)   ISC_MAGIC_VALID(t, IFITER_MAGIC)
Functions
isc_result_t	isc_interfaceiter_create (isc_mem_t *mctx, isc_interfaceiter_t **iterp)
	Create an iterator for traversing the operating system's list of network interfaces.
static isc_result_t	internal_current (isc_interfaceiter_t *iter)
static isc_result_t	internal_next (isc_interfaceiter_t *iter)
static void	internal_destroy (isc_interfaceiter_t *iter)
static void	internal_first (isc_interfaceiter_t *iter)
Variables
static int	mib [6]

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Detailed Description

Obtain the list of network interfaces using sysctl. See TCP/IP Illustrated Volume 2, sections 19.8, 19.14, and 19.16.

Definition in file ifiter_sysctl.c.

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Define Documentation

#define ROUNDUP

(

a

)

Value:

((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) \
                    : sizeof(long))

Definition at line 39 of file ifiter_sysctl.c.

Referenced by internal_current().

#define IFITER_MAGIC   ISC_MAGIC('I', 'F', 'I', 'S')

Definition at line 43 of file ifiter_sysctl.c.

#define VALID_IFITER

(

t

)

ISC_MAGIC_VALID(t, IFITER_MAGIC)

Definition at line 44 of file ifiter_sysctl.c.

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Function Documentation

isc_result_t isc_interfaceiter_create	(	isc_mem_t *	mctx,
		isc_interfaceiter_t **	iterp
	)

Create an iterator for traversing the operating system's list of network interfaces.

Returns:

• ISC_R_SUCCESS
• ISC_R_NOMEMORY
• Various network-related errors

Definition at line 68 of file ifiter_sysctl.c.

References isc_interfaceiter::buf, isc_interfaceiter::bufsize, isc_interfaceiter::bufused, IFITER_MAGIC, INSIST, isc__strerror(), isc_mem_get, isc_mem_put, ISC_MSG_GETIFLIST, ISC_MSG_GETIFLISTSIZE, isc_msgcat_get(), ISC_MSGSET_IFITERSYSCTL, ISC_R_FAILURE, ISC_R_NOMEMORY, ISC_R_SUCCESS, ISC_R_UNEXPECTED, ISC_STRERRORSIZE, isc_interfaceiter::magic, isc_interfaceiter::mctx, mib, isc_interfaceiter::pos, REQUIRE, isc_interfaceiter::result, and UNEXPECTED_ERROR.

Referenced by do_scan().

static isc_result_t internal_current

(

isc_interfaceiter_t *

iter

)

[static]

Definition at line 153 of file ifiter_sysctl.c.

References isc_interface::address, isc_interface::af, AF_INET6, isc_interfaceiter::buf, isc_interfaceiter::bufused, isc_interfaceiter::current, isc_interface::dstaddress, isc_interface::flags, get_addr(), INSIST, INTERFACE_F_LOOPBACK, INTERFACE_F_POINTTOPOINT, INTERFACE_F_UP, ISC_MSG_UNEXPECTEDTYPE, isc_msgcat_get(), ISC_MSGSET_IFITERSYSCTL, ISC_R_IGNORE, ISC_R_SUCCESS, isc_interface::name, isc_interface::netmask, isc_interfaceiter::pos, REQUIRE, ROUNDUP, and VALID_IFITER.

static isc_result_t internal_next

(

isc_interfaceiter_t *

iter

)

[static]

Definition at line 278 of file ifiter_sysctl.c.

References isc_interfaceiter::buf, isc_interfaceiter::bufused, ISC_R_NOMORE, ISC_R_SUCCESS, isc_interfaceiter::pos, and REQUIRE.

static void internal_destroy

(

isc_interfaceiter_t *

iter

)

[static]

Definition at line 293 of file ifiter_sysctl.c.

References UNUSED.

static void internal_first

(

isc_interfaceiter_t *

iter

)

[static]

Definition at line 301 of file ifiter_sysctl.c.

References isc_interfaceiter::pos.

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Variable Documentation

int mib[6] [static]

Initial value:

 {
        CTL_NET,
        PF_ROUTE,
        0,
        0,                      
        NET_RT_IFLIST,
        0                       
}

Definition at line 58 of file ifiter_sysctl.c.

Referenced by isc_interfaceiter_create().

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