命令与shell一起运行，但卡在QProcess中

Question

I'm trying to execute some command with QProcess. Executing from terminal works fine.

For example, I want to execute following command: fpscan /path --report --verbose=2 --nospin (scanning files with f-prot antivirus). I'm trying the following code:

QProcess* p = new QProcess(this);
p->start("fpscan", params);

process get stuck.

From ps -Al | grep fpscan ps -Al | grep fpscan output I see, that this process opens another process.

process     |    WCHAN    |    TIME
1           |    wait     |  00:00:00
2           |    pipe_w   |  00:00:00

strace command:

1. wait4(-1,
2. read(0,

Any suggestions?

PS: another command clamscan /path params works fine with QProcess.

Update: I've tried to use fork, execl, and it works, so the problem is with QT and QProcess.

pid_t pid = fork();
if (pid == 0) {
    execl("/usr/local/bin/fpscan", "fpscan", "/path", ... , NULL);
}

Answer 1

看起来这个过程试图从stdin读取。