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| author | Andrey Konovalov <andreyknvl@google.com> | 2017-02-17 16:07:48 +0100 |
|---|---|---|
| committer | Andrey Konovalov <andreyknvl@google.com> | 2017-02-17 21:44:23 +0100 |
| commit | b042176ac78c191253124063054b63153abcbe96 (patch) | |
| tree | a21ab140c086eaecd61d49207b4fe463fde71703 | |
| parent | 1466d0cb9f3cfcd088ad7e7e0c8b79b521d129ab (diff) | |
host: open /dev/net/tun to check if syz_emit_ethernet is enabled
| -rw-r--r-- | host/host.go | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/host/host.go b/host/host.go index 74696e46d..1cea844ff 100644 --- a/host/host.go +++ b/host/host.go @@ -99,7 +99,10 @@ func isSupportedSyzkall(c *sys.Call) bool { _, err := os.Stat("/dev/fuse") return err == nil && syscall.Getuid() == 0 case "syz_emit_ethernet": - _, err := os.Stat("/dev/net/tun") + fd, err := syscall.Open("/dev/net/tun", syscall.O_RDWR, 0) + if err == nil { + syscall.Close(fd) + } return err == nil && syscall.Getuid() == 0 case "syz_kvm_setup_cpu": switch c.Name { |