linux - Inotify 在事件第一次发生后不报告事件

Question

我正在尝试使用 inotify 监视配置文件，并且它在第一个事件之后不报告事件。我的程序适用于普通文本文件，但不适用于配置文件，顺便说一下，配置文件也是文本文件。这是我的代码：

int watchFile(char* filePath, void(*handleChange)(void)){

    int inotifyFileDescriptor;
    int watchDescriptor;
    ssize_t numRead;
    struct inotify_event* event;

    char buffer[INOTIFY_BUFFER_LENGTH] __attribute__((aligned(8)));
    char buffer_second[INOTIFY_BUFFER_LENGTH] __attribute__((aligned(8)));

    inotifyFileDescriptor = inotify_init();
    if(inotifyFileDescriptor == -1){
        return inotifyInitError;
    }

    watchDescriptor = inotify_add_watch(inotifyFileDescriptor, filePath, IN_MODIFY);
    if(watchDescriptor == -1){
        return failureAddingWatch;
    }

    while(1){

        printf("At the start of the loop ...\n");

        numRead = read(inotifyFileDescriptor, buffer, INOTIFY_BUFFER_LENGTH);

        if(numRead == 0){
            return zeroLengthBufferReturn;
        }

        if(numRead == -1){
            return inotifyEventReadError;
        }
/*
        Got some event. Check them
        printf("got some event\n");
        handleChange();*/

        for(char* p=buffer; p < buffer + numRead;){
            event = (struct inotify_event*) p;
               printf("got some event\n");
            handleChange();

            p += sizeof(struct inotify_event) + event->len;
        }
    }
    return 0;
}