*/
#ifndef lint
static const char rcsid[] =
- "@(#) $Header: /tcpdump/master/libpcap/pcap-bpf.c,v 1.55 2002-12-22 02:36:48 guy Exp $ (LBL)";
+ "@(#) $Header: /tcpdump/master/libpcap/pcap-bpf.c,v 1.56 2003-02-11 01:46:05 guy Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
#include <sys/ioctl.h>
#include <net/if.h>
+
#ifdef _AIX
+
+/*
+ * Make "pcap.h" not include "pcap-bpf.h"; we are going to include the
+ * native OS version, as we need "struct bpf_config" from it.
+ */
+#define PCAP_DONT_INCLUDE_PCAP_BPF_H
+
+#include <sys/types.h>
+
+/*
+ * Prevent bpf.h from redefining the DLT_ values to their
+ * IFT_ values, as we're going to return the standard libpcap
+ * values, not IBM's non-standard IFT_ values.
+ */
+#undef _AIX
+#include <net/bpf.h>
+#define _AIX
+
#include <net/if_types.h> /* for IFT_ values */
-#endif
+#include <sys/sysconfig.h>
+#include <sys/device.h>
+#include <odmi.h>
+#include <cf.h>
+
+#ifdef __64BIT__
+#define domakedev makedev64
+#define getmajor major64
+#define bpf_hdr bpf_hdr32
+#else /* __64BIT__ */
+#define domakedev makedev
+#define getmajor major
+#endif /* __64BIT__ */
+
+#define BPF_NAME "bpf"
+#define BPF_MINORS 4
+#define DRIVER_PATH "/usr/lib/drivers"
+#define BPF_NODE "/dev/bpf"
+static int bpfloadedflag = 0;
+static int odmlockid = 0;
+
+#else /* _AIX */
+
+#include <net/bpf.h>
+
+#endif /* _AIX */
#include <ctype.h>
#include <errno.h>
return (n);
}
+#ifdef _AIX
+static int
+bpf_odminit(char *errbuf)
+{
+ if (odm_initialize() == -1) {
+ snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "bpf_load: odm_initialize failed: %s",
+ pcap_strerror(errno));
+ return (-1);
+ }
+
+ if ((odmlockid = odm_lock("/etc/objrepos/config_lock", ODM_WAIT)) == -1) {
+ snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "bpf_load: odm_lock of /etc/objrepos/config_lock failed: %s",
+ pcap_strerror(errno));
+ return (-1);
+ }
+
+ return (0);
+}
+
+static int
+bpf_odmcleanup(char *errbuf)
+{
+ if (odm_unlock(odmlockid) == -1) {
+ snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "bpf_load: odm_unlock failed: %s",
+ pcap_strerror(errno));
+ return (-1);
+ }
+
+ odm_terminate();
+
+ return (0);
+}
+
+static int
+bpf_load(char *errbuf)
+{
+ long major;
+ int *minors;
+ int numminors, i, rc;
+ char buf[1024];
+ struct stat sbuf;
+ struct bpf_config cfg_bpf;
+ struct cfg_load cfg_ld;
+ struct cfg_kmod cfg_km;
+
+ /*
+ * This is very very close to what happens in the real implementation
+ * but I've fixed some (unlikely) bug situations.
+ */
+ if (bpfloadedflag)
+ return (0);
+
+ if (bpf_odminit(errbuf) != 0)
+ return (-1);
+
+ major = genmajor(BPF_NAME);
+ if (major == -1) {
+ snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "bpf_load: genmajor failed: %s", pcap_strerror(errno));
+ return (-1);
+ }
+
+ minors = getminor(major, &numminors, BPF_NAME);
+ if (!minors) {
+ minors = genminor("bpf", major, 0, BPF_MINORS, 1, 1);
+ if (!minors) {
+ snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "bpf_load: genminor failed: %s",
+ pcap_strerror(errno));
+ return (-1);
+ }
+
+ }
+
+ if (bpf_odmcleanup(errbuf))
+ return (-1);
+
+ rc = stat(BPF_NODE "0", &sbuf);
+ if (rc == -1 && errno != ENOENT) {
+ snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "bpf_load: can't stat %s: %s",
+ BPF_NODE "0", pcap_strerror(errno));
+ return (-1);
+ }
+
+ if (rc == -1 || getmajor(sbuf.st_rdev) != major) {
+ for (i = 0; i < BPF_MINORS; i++) {
+ sprintf(buf, "%s%d", BPF_NODE, i);
+ unlink(buf);
+ if (mknod(buf, S_IRUSR | S_IFCHR, domakedev(major, i)) == -1) {
+ snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "bpf_load: can't mknod %s: %s",
+ buf pcap_strerror(errno));
+ return (-1);
+ }
+ }
+ }
+
+ /* Check if the driver is loaded */
+ memset(&cfg_ld, 0x0, sizeof(cfg_ld));
+ cfg_ld.path = buf;
+ sprintf(cfg_ld.path, "%s/%s", DRIVER_PATH, BPF_NAME);
+ if (sysconfig(SYS_QUERYLOAD, (void *) &cfg_ld, sizeof(cfg_ld) == -1) ||
+ (cfg_ld.kmid == 0)) {
+ /* Driver isn't loaded, load it now */
+ if (sysconfig(SYS_SINGLELOAD, (void *) &cfg_ld, sizeof(cfg_ld)) == -1) {
+ snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "bpf_load: could not load driver: %s",
+ strerror(errno));
+ return (-1);
+ }
+ }
+
+ /* Configure the driver */
+ cfg_km.cmd = CFG_INIT;
+ cfg_km.kmid = cfg_ld.kmid;
+ cfg_km.mdilen = sizeof(cfg_bpf);
+ cfg_km.mdiptr = (void *) &cfg_bpf;
+ for (i = 0; i < BPF_MINORS; i++) {
+ cfg_bpf.devno = domakedev(major, i);
+ if (sysconfig(SYS_CFGKMOD, (void *) &cfg_km, sizeof(cfg_km)) == -1) {
+ snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "bpf_load: could not configure driver: %s",
+ strerror(errno));
+ return (-1);
+ }
+ }
+
+ bpfloadedflag = 1;
+
+ return (0);
+}
+#endif
+
static inline int
bpf_open(pcap_t *p, char *errbuf)
{
int n = 0;
char device[sizeof "/dev/bpf0000000000"];
+#ifdef _AIX
+ /*
+ * Load the bpf driver, if it isn't already loaded,
+ * and create the BPF device entries, if they don't
+ * already exist.
+ */
+ if (bpf_load(errbuf) == -1)
+ return (-1);
+#endif
+
/*
* Go through all the minors and find one that isn't in use.
*/
projects / libpcap / blobdiff