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The updated selftest was assuming qemu-bridge-helper was available on the host
system which isn't always the case. Tweak the test case to avoid this issue by
adding dedicated help output and checking for this specifically.
(From OE-Core rev: 4a80e95d1f59e0ddcedde3f64d0a0d1dc48a6e4d)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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The previous version of this wasn't correctly passing the program name
as argv[0], and was also over-complicated anyway because argv[] is
guaranteed to be terminated with a NULL pointer, so it can be passed
directly to the execv'd process without needing to be copied.
(From OE-Core rev: 6edf38add3c20c44efe0588e2815bb280d22e0c4)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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The bridge helper program is invoked directly from QEMU when it needs to
attach to a network bridge. As such, it is subject to the environment of
QEMU itself. Specifically, if bridging is enabled with direct rendering
acceleration, QEMU is run with an LD_PRELOAD that attempts to preload
several uninative libraries; however /bin/sh doesn't use the uninative
loader which means it can fail to start with an error like:
/bin/sh: symbol lookup error: sysroots-uninative/x86_64-linux/lib/librt.so.1: undefined symbol: __libc_unwind_link_get, version GLIBC_PRIVATE
Converting the helper program to a C program resolves this problem
because it will now use the uninative loader so the preload doesn't
cause errors.
(From OE-Core rev: f698e98f2f09952b34488b8cf9e73e82bd7aea07)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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