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2019-10-22Do not use %m in common code to print error messagesThomas Huth
The %m format specifier is an extension from glibc - and when compiling QEMU for NetBSD, the compiler correctly complains, e.g.: /home/qemu/qemu-test.ELjfrQ/src/util/main-loop.c: In function 'sigfd_handler': /home/qemu/qemu-test.ELjfrQ/src/util/main-loop.c:64:13: warning: %m is only allowed in syslog(3) like functions [-Wformat=] printf("read from sigfd returned %zd: %m\n", len); ^ Let's use g_strerror() here instead, which is an easy-to-use wrapper around the thread-safe strerror_r() function. While we're at it, also convert the "printf()" in main-loop.c into the preferred "error_report()". Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <20191018130716.25438-1-thuth@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-03-19qemu-ga: obey LISTEN_PID when using systemd socket activationPaolo Bonzini
qemu-ga's socket activation support was not obeying the LISTEN_PID environment variable, which avoids that a process uses a socket-activation file descriptor meant for its parent. Mess can for example ensue if a process forks a children before consuming the socket-activation file descriptor and therefore setting O_CLOEXEC on it. Luckily, qemu-nbd also got socket activation code, and its copy does support LISTEN_PID. Some extra fixups are needed to ensure that the code can be used for both, but that's what this patch does. The main change is to replace get_listen_fds's "consume" argument with the FIRST_SOCKET_ACTIVATION_FD macro from the qemu-nbd code. Cc: "Richard W.M. Jones" <rjones@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>