Re: [libvirt] [PATCH] virlog: Add stack trace log when libvirt receives fatal signal

An earlier commit(c0c8c1) Dan removed global log buffer feature entirely because of duplicate log messages. An improvement is introduced. That is dumping stack trace instead of log buffer upon libvirt crash.

+virLogDumpAllFD(const char *msg, int len) +{ + size_t i; + bool found = false; + + if (len <= 0) + len = strlen(msg); + + for (i = 0; i < virLogNbOutputs; i++) { + if (virLogOutputs[i].f == virLogOutputToFd) { + int fd = (intptr_t) virLogOutputs[i].data; + + if (fd >= 0) { + if (msg) + ignore_value(safewrite(fd, msg, len)); + else + virLogStackTraceToFd(fd); + + found = true; + } + } + } + if (!found) { + if (msg) + ignore_value(safewrite(STDERR_FILENO, msg, len)); + else + virLogStackTraceToFd(STDERR_FILENO);