runqemu-gen-tapdevs: fix runqemu-ifup script call

The tunctl binary is here:

OE @ /OE/openembedded-core # find /OE/build/oe-core/tmp-glibc/sysroots-components/x86_64/qemu-helper-native/
/OE/build/oe-core/tmp-glibc/sysroots-components/x86_64/qemu-helper-native/
/OE/build/oe-core/tmp-glibc/sysroots-components/x86_64/qemu-helper-native/sysroot-providers
/OE/build/oe-core/tmp-glibc/sysroots-components/x86_64/qemu-helper-native/sysroot-providers/qemu-helper-native
/OE/build/oe-core/tmp-glibc/sysroots-components/x86_64/qemu-helper-native/usr
/OE/build/oe-core/tmp-glibc/sysroots-components/x86_64/qemu-helper-native/usr/bin
/OE/build/oe-core/tmp-glibc/sysroots-components/x86_64/qemu-helper-native/usr/bin/tunctl

But the script still complains that it cannot find tunctl:

OE @ /OE/openembedded-core # ./scripts/runqemu-gen-tapdevs 1026 1026 4 /OE/build/oe-core/tmp-glibc/sysroots-components/x86_64/qemu-helper-native/
Note: Destroying pre-existing tap interface tap0...
TUNSETIFF: Device or resource busy
Creating 4 tap devices for UID: 1026 GID: 1026...
Creating tap0
Error running tunctl: Error: Unable to find tunctl binary in '/OE/build/oe-core/tmp-glibc/sysroots-components/x86_64/qemu-helper-native/', please bitbake qemu-helper-native

The message is actually from runqemu-ifup, which is called from runqemu-gen-tapdevs as:
++ ./scripts/runqemu-ifup 1026 1026 /OE/build/oe-core/tmp-glibc/sysroots-components/x86_64/qemu-helper-native/

But runqemu-ifup expects 3rd parameter to be STAGING_BINDIR_NATIVE directly not just SYSROOT dir
STAGING_BINDIR_NATIVE=$3
because tunctl is then used as:
TUNCTL=$STAGING_BINDIR_NATIVE/tunctl

It looks like it got broken by:
commit cc5513bf7a6114e14bb307acb88a44e9cf0aed8a
Author: Ed Bartosh <ed.bartosh@linux.intel.com>
Date:   Wed Apr 12 23:40:59 2017 +0300

    runqemu: use bindir_native property to run ifup/down scripts

    Used self.bindir_native to point out to the native sysroot
    when running runqemu-ifup and runqemu-ifdown scripts.

    [YOCTO #11266]
    [YOCTO #11193]

    Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
    Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Seemingly obvious fix would be to call runqemu-gen-tapdevs with path to STAGING_BINDIR_NATIVE in 4th parameter as well, but that won't work, because runqemu-gen-tapdevs checks for TUNCTL=$SYSROOT/usr/bin/tunctl

OE @ /OE/openembedded-core # ./scripts/runqemu-gen-tapdevs 1026 1026 4 /OE/build/oe-core/tmp-glibc/sysroots-components/x86_64/qemu-helper-native/usr/bin/
Error: /OE/build/oe-core/tmp-glibc/sysroots-components/x86_64/qemu-helper-native/usr/bin//usr/bin/tunctl is not an executable

I've tested that with this change it can call tunctl:
OE @ /OE/openembedded-core # ./scripts/runqemu-gen-tapdevs 1026 1026 4
/OE/build/oe-core/tmp-glibc/sysroots-components/x86_64/qemu-helper-native/usr/bin
Note: Destroying pre-existing tap interface tap0...
TUNSETIFF: Device or resource busy
Creating 4 tap devices for UID: 1026 GID: 1026...
Creating tap0
Creating tap1
Creating tap2
Creating tap3
Note: For systems running NetworkManager, it's recommended
Note: that the tap devices be set as unmanaged in the
Note: NetworkManager.conf file. Add the following lines to
Note: /etc/NetworkManager/NetworkManager.conf
[keyfile]
unmanaged-devices=interface-name:tap*

but runqemu itself still doesn't work for me:
OE qemux86@ ~/build/oe-core $ runqemu
runqemu - INFO - Running MACHINE=qemux86 bitbake -e...
runqemu - INFO - Running ls -t /OE/build/oe-core/tmp-glibc/deploy/images/qemux86/*.qemuboot.conf...
runqemu - INFO - CONFFILE: /OE/build/oe-core/tmp-glibc/deploy/images/qemux86/core-image-sato-qemux86-20170427174052.qemuboot.conf
runqemu - INFO - Overriding conf file setting of STAGING_DIR_NATIVE to /OE/build/oe-core/tmp-glibc/work/i586-oe-linux/defaultpkgname/1.0-r0/recipe-sysroot-native from Bitbake environment
runqemu - INFO - Continuing with the following parameters:

KERNEL: [tmp-glibc/deploy/images/qemux86/bzImage--4.10.9+git0+ad2e885015_fe0fb8da3d-r0.2-qemux86-20170427085800.bin]
MACHINE: [qemux86]
FSTYPE: [ext4]
ROOTFS: [tmp-glibc/deploy/images/qemux86/core-image-sato-qemux86-20170427174052.rootfs.ext4]
CONFFILE: [/OE/build/oe-core/tmp-glibc/deploy/images/qemux86/core-image-sato-qemux86-20170427174052.qemuboot.conf]

runqemu - INFO - Running /bin/ip link...
runqemu - INFO - Acquiring lockfile /tmp/qemu-tap-locks/tap0.lock...
runqemu - INFO - Using preconfigured tap device tap0
runqemu - INFO - If this is not intended, touch /tmp/qemu-tap-locks/tap0.skip to make runqemu skip tap0.
runqemu - INFO - Network configuration: 192.168.7.2::192.168.7.1:255.255.255.0
runqemu - INFO - Running ldd tmp-glibc/work/x86_64-linux/qemu-helper-native/1.0-r1/recipe-sysroot-native/usr/bin//qemu-system-i386...
runqemu - INFO - Running tmp-glibc/work/x86_64-linux/qemu-helper-native/1.0-r1/recipe-sysroot-native/usr/bin//qemu-system-i386 -device virtio-net-pci,netdev=net0,mac=52:54:00:12:34:02 -netdev tap,id=net0,ifname=tap0,script=no,downscript=no -drive file=tmp-glibc/deploy/images/qemux86/core-image-sato-qemux86-20170427174052.rootfs.ext4,if=virtio,format=raw -vga vmware -show-cursor -usb -usbdevice tablet -device virtio-rng-pci   -cpu qemu32 -m 256 -serial mon:vc -serial null -kernel tmp-glibc/deploy/images/qemux86/bzImage--4.10.9+git0+ad2e885015_fe0fb8da3d-r0.2-qemux86-20170427085800.bin -append 'root=/dev/vda rw highres=off  mem=256M ip=192.168.7.2::192.168.7.1:255.255.255.0 vga=0 uvesafb.mode_option=640x480-32 oprofile.timer=1 uvesafb.task_timeout=-1 '
qemu-system-i386: -netdev tap,id=net0,ifname=tap0,script=no,downscript=no: could not configure /dev/net/tun (tap0): Device or resource busy
runqemu - INFO - Releasing lockfile for tap device 'tap0'
Traceback (most recent call last):
  File "/OE/build/oe-core/openembedded-core/scripts/runqemu", line 1235, in <module>
    ret = main()
  File "/OE/build/oe-core/openembedded-core/scripts/runqemu", line 1228, in main
    config.start_qemu()
  File "/OE/build/oe-core/openembedded-core/scripts/runqemu", line 1139, in start_qemu
    raise Exception('Failed to run %s' % cmd)
Exception: Failed to run tmp-glibc/work/x86_64-linux/qemu-helper-native/1.0-r1/recipe-sysroot-native/usr/bin//qemu-system-i386 -device virtio-net-pci,netdev=net0,mac=52:54:00:12:34:02 -netdev tap,id=net0,ifname=tap0,script=no,downscript=no -drive file=tmp-glibc/deploy/images/qemux86/core-image-sato-qemux86-20170427174052.rootfs.ext4,if=virtio,format=raw -vga vmware -show-cursor -usb -usbdevice tablet -device virtio-rng-pci   -cpu qemu32 -m 256 -serial mon:vc -serial null -kernel tmp-glibc/deploy/images/qemux86/bzImage--4.10.9+git0+ad2e885015_fe0fb8da3d-r0.2-qemux86-20170427085800.bin -append 'root=/dev/vda rw highres=off  mem=256M ip=192.168.7.2::192.168.7.1:255.255.255.0 vga=0 uvesafb.mode_option=640x480-32 oprofile.timer=1 uvesafb.task_timeout=-1 '

(From OE-Core rev: a31b1434c5f1edbd4e8faca813b4f084297c061d)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 5 insertions, 5 deletions

diff --git a/scripts/runqemu-gen-tapdevs b/scripts/runqemu-gen-tapdevs
index 49e1efce7c..11de318c1a 100755
--- a/scripts/runqemu-gen-tapdevs
+++ b/scripts/runqemu-gen-tapdevs
@@ -23,13 +23,13 @@
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
 usage() {
-        echo "Usage: sudo $0 <uid> <gid> <num> <native-sysroot-basedir>"
+        echo "Usage: sudo $0 <uid> <gid> <num> <staging_bindir_native>"
         echo "Where <uid> is the numeric user id the tap devices will be owned by"
         echo "Where <gid> is the numeric group id the tap devices will be owned by"
         echo "<num> is the number of tap devices to create (0 to remove all)"
         echo "<native-sysroot-basedir> is the path to the build system's native sysroot"
         echo "e.g. $ bitbake qemu-helper-native"
-        echo "$ sudo $0 1000 1000 4 tmp/sysroots-components/x86_64/qemu-helper-native/"
+        echo "$ sudo $0 1000 1000 4 tmp/sysroots-components/x86_64/qemu-helper-native/usr/bin"
         exit 1
 }
 
@@ -46,9 +46,9 @@ fi
 TUID=$1
 GID=$2
 COUNT=$3
-SYSROOT=$4
+STAGING_BINDIR_NATIVE=$4
 
-TUNCTL=$SYSROOT/usr/bin/tunctl
+TUNCTL=$STAGING_BINDIR_NATIVE/tunctl
 if [[ ! -x "$TUNCTL" || -d "$TUNCTL" ]]; then
         echo "Error: $TUNCTL is not an executable"
         usage
@@ -87,7 +87,7 @@ if [ $COUNT -gt 0 ]; then
         echo "Creating $COUNT tap devices for UID: $TUID GID: $GID..."
         for ((index=0; index < $COUNT; index++)); do
                 echo "Creating tap$index"
-                ifup=`$RUNQEMU_IFUP $TUID $GID $SYSROOT 2>&1`
+                ifup=`$RUNQEMU_IFUP $TUID $GID $STAGING_BINDIR_NATIVE 2>&1`
                 if [ $? -ne 0 ]; then
                         echo "Error running tunctl: $ifup"
                         exit 1