qemu-nbd: Do not close stderr
We kept old_stderr specifically so we could keep emitting error message on stderr. However, qemu_daemon() closes stderr. Therefore, we need to dup() stderr to old_stderr before invoking qemu_daemon(). Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190508211820.17851-4-mreitz@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com>
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@ -1004,10 +1004,11 @@ int main(int argc, char **argv)
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exit(EXIT_FAILURE);
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exit(EXIT_FAILURE);
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} else if (pid == 0) {
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} else if (pid == 0) {
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close(stderr_fd[0]);
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close(stderr_fd[0]);
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old_stderr = dup(STDERR_FILENO);
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ret = qemu_daemon(1, 0);
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ret = qemu_daemon(1, 0);
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/* Temporarily redirect stderr to the parent's pipe... */
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/* Temporarily redirect stderr to the parent's pipe... */
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old_stderr = dup(STDERR_FILENO);
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dup2(stderr_fd[1], STDERR_FILENO);
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dup2(stderr_fd[1], STDERR_FILENO);
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if (ret < 0) {
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if (ret < 0) {
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error_report("Failed to daemonize: %s", strerror(errno));
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error_report("Failed to daemonize: %s", strerror(errno));
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