102 lines
2.3 KiB
C
102 lines
2.3 KiB
C
/* Copyright (c) 1999 SuSE GmbH Nuerenberg, Germany
|
|
Author: Thorsten Kukuk <kukuk@suse.de> */
|
|
|
|
#include <assert.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/un.h>
|
|
|
|
/* Version number of the daemon interface */
|
|
#define NSCD_VERSION 2
|
|
/* Path for the Unix domain socket. */
|
|
#define _PATH_NSCDSOCKET "/var/run/nscd/socket"
|
|
#define _PATH_NSCDSOCKET_OLD "/var/run/.nscd_socket"
|
|
|
|
/* Available services. */
|
|
typedef enum {
|
|
GETPWBYNAME,
|
|
GETPWBYUID,
|
|
GETGRBYNAME,
|
|
GETGRBYGID,
|
|
GETHOSTBYNAME,
|
|
GETHOSTBYNAMEv6,
|
|
GETHOSTBYADDR,
|
|
GETHOSTBYADDRv6,
|
|
LASTDBREQ = GETHOSTBYADDRv6,
|
|
SHUTDOWN, /* Shut the server down. */
|
|
GETSTAT, /* Get the server statistic. */
|
|
INVALIDATE, /* Invalidate one special cache. */
|
|
LASTREQ
|
|
} request_type;
|
|
|
|
/* Header common to all requests */
|
|
typedef struct {
|
|
int version; /* Version number of the daemon interface. */
|
|
request_type type; /* Service requested. */
|
|
#if defined(__alpha__)
|
|
int64_t key_len; /* Key length is 64bit on Alpha. */
|
|
#else
|
|
int32_t key_len; /* Key length, 32bit on most plattforms. */
|
|
#endif
|
|
} request_header;
|
|
|
|
/* Create a socket connected to a name. */
|
|
static int nscd_open_socket (void)
|
|
{
|
|
struct sockaddr_un addr;
|
|
int sock;
|
|
|
|
sock = socket (PF_UNIX, SOCK_STREAM, 0);
|
|
if (sock < 0)
|
|
return -1;
|
|
|
|
addr.sun_family = AF_UNIX;
|
|
assert (sizeof (addr.sun_path) >= sizeof (_PATH_NSCDSOCKET));
|
|
strcpy (addr.sun_path, _PATH_NSCDSOCKET);
|
|
if (connect (sock, (struct sockaddr *) &addr, sizeof (addr)) < 0) {
|
|
addr.sun_family = AF_UNIX;
|
|
assert (sizeof (addr.sun_path) >=
|
|
sizeof (_PATH_NSCDSOCKET_OLD));
|
|
strcpy (addr.sun_path, _PATH_NSCDSOCKET_OLD);
|
|
if (connect (sock, (struct sockaddr *) &addr, sizeof (addr)) <
|
|
0) {
|
|
close (sock);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return sock;
|
|
}
|
|
|
|
/*
|
|
* nscd_flush_cache - flush specyfied service bufor in nscd cache
|
|
*/
|
|
int nscd_flush_cache (char *service)
|
|
{
|
|
int sock = nscd_open_socket ();
|
|
request_header req;
|
|
struct iovec iov[2];
|
|
ssize_t nbytes;
|
|
|
|
if (sock == -1)
|
|
return -1;
|
|
|
|
req.version = NSCD_VERSION;
|
|
req.type = INVALIDATE;
|
|
req.key_len = strlen (service);
|
|
|
|
iov[0].iov_base = &req;
|
|
iov[0].iov_len = sizeof (req);
|
|
iov[1].iov_base = service;
|
|
iov[1].iov_len = req.key_len;
|
|
|
|
nbytes = writev (sock, iov, 2);
|
|
|
|
close (sock);
|
|
return (nbytes != iov[0].iov_len + iov[1].iov_len ? (-1) : 0);
|
|
}
|