add contrib directory & contents

2006-02-25 18:23:24 +00:00
parent d0d8b1d9f1
commit 26904e9637
38 changed files with 6449 additions and 0 deletions
@@ -0,0 +1,65 @@
+/* sockets.c. Rewriten by Andi Kleen. Subject to the GPL. */
+
+/* philb 14/11/98: we now stash the socket file descriptor inside
+   the `aftype' structure rather than keeping it in a pile of separate
+   variables.  This is necessary so that "ifconfig eth0 broadcast ..."
+   issues ioctls to the right socket for the address family in use;
+   picking one at random doesn't always work.  */
+
+#include <sys/socket.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "config.h"
+#include "sockets.h"
+#include "intl.h"
+#include "util.h"
+#include "net-support.h"
+
+int skfd = -1;			/* generic raw socket desc.     */
+
+int sockets_open(int family)
+{
+    struct aftype **aft;
+    int sfd = -1;
+    static int force = -1;
+
+    if (force < 0) {
+	force = 0;
+	if (kernel_version() < KRELEASE(2, 1, 0))
+	    force = 1;
+	if (access("/proc/net", R_OK))
+	    force = 1;
+    }
+    for (aft = aftypes; *aft; aft++) {
+	struct aftype *af = *aft;
+	int type = SOCK_DGRAM;
+	if (af->af == AF_UNSPEC)
+	    continue;
+	if (family && family != af->af)
+	    continue;
+	if (af->fd != -1) {
+	    sfd = af->fd;
+	    continue;
+	}
+	/* Check some /proc file first to not stress kmod */
+	if (!family && !force && af->flag_file) {
+	    if (access(af->flag_file, R_OK))
+		continue;
+	}
+#if HAVE_AFNETROM
+	if (af->af == AF_NETROM)
+	    type = SOCK_SEQPACKET;
+#endif
+#if HAVE_AFX25
+       if (af->af == AF_X25)
+           type = SOCK_SEQPACKET;
+#endif
+	af->fd = socket(af->af, type, 0);
+	if (af->fd >= 0)
+	    sfd = af->fd;
+    }
+    if (sfd < 0)
+	fprintf(stderr, _("No usable address families found.\n"));
+    return sfd;
+}