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6731665740
A fast CPU emulator environment. PR: 67506 Submitted by: Juergen Lock <nox@jelal.kn-bremen.de>
94 lines
2.3 KiB
Text
94 lines
2.3 KiB
Text
Index: qemu/vl.c
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@@ -41,6 +41,9 @@
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#ifdef _BSD
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#include <sys/stat.h>
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#include <libutil.h>
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+#ifdef __FreeBSD__
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+#include <sys/module.h>
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+#endif
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#else
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#include <linux/if.h>
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#include <linux/if_tun.h>
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@@ -1022,6 +1025,34 @@
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#endif /* CONFIG_SLIRP */
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+#ifdef __FreeBSD__
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+#define LOAD_QUIETLY 1
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+#define LOAD_VERBOSLY 2
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+
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+int
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+loadmodules(int how, const char *module, ...)
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+{
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+ int loaded = 0;
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+ va_list ap;
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+
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+ va_start(ap, module);
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+#ifndef NO_MODULES
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+ while (module != NULL) {
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+ if (modfind(module) == -1) {
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+ if (kldload(module) == -1) {
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+ if (how == LOAD_VERBOSLY)
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+ fprintf(stderr, "%s: Cannot load module\n", module);
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+ } else
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+ loaded++;
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+ }
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+ module = va_arg(ap, const char *);
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+ }
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+ va_end(ap);
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+#endif
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+ return loaded;
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+}
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+#endif
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+
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#if !defined(_WIN32)
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#ifdef _BSD
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static int tun_open(char *ifname, int ifname_size)
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@@ -1030,11 +1061,46 @@
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char *dev;
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struct stat s;
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+#ifdef __FreeBSD__
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+ int i, kldtried = 0, enoentcount = 0, err = 0;
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+ char dname[100];
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+ for (i = -1; i < 10; i++) {
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+ if (i == -1)
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+ strcpy(dname, "/dev/tap");
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+ else
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+ snprintf(dname, sizeof dname, "%s%d",
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+ "/dev/tap", i);
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+ fd = open(dname, O_RDWR);
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+ if (fd >= 0)
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+ break;
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+ else if (errno == ENXIO || errno == ENOENT) {
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+ if (i == 0 && !kldtried++) {
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+ /*
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+ * Attempt to load the tunnel interface KLD if it isn't loaded
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+ * already.
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+ */
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+ if (loadmodules(LOAD_VERBOSLY, "if_tap", NULL))
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+ i = -1;
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+ continue;
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+ }
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+ if (errno != ENOENT || ++enoentcount > 3) {
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+ err = errno;
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+ break;
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+ }
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+ } else
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+ err = errno;
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+ }
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+ if (fd < 0) {
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+ fprintf(stderr, "warning: could not open %s (%s): no virtual network emulation\n", dname, strerror(err));
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+ return -1;
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+ }
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+#else
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fd = open("/dev/tap", O_RDWR);
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if (fd < 0) {
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- fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
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+ fprintf(stderr, "warning: could not open /dev/tap (%s): no virtual network emulation\n", strerror(errno));
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return -1;
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}
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+#endif
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fstat(fd, &s);
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dev = devname(s.st_rdev, S_IFCHR);
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