c - 从vxworks中的ftp套接字读取

我想从套接字读取数据，然后使用fwrite将它们写入fuile，但我一直遇到异常。我的代码：

MyFile = fopen ("flash:/ngfm.bin","wb");
if (MyFile != NULL) {

    while ((nBytes = read (dataSock, buf, sizeof (buf))) > 0) {
        ByteCount++;
        if (ByteCount %10)
            printf(".");
        if (ByteCount %100)
                    printf("\n");
        fwrite( buf, sizeof(buf), nBytes, MyFile );
    }
    printf("%d Bytes written to flash:/ngfm.bin!\n", ByteCount);
    fclose( MyFile );
}
close (dataSock);

这在vxworks上并且我的设备闪烁：存在并且可写！我在外壳上执行了以下操作：

JPAX-DP> mf = fopen("flash:/test","w")
New symbol "mf" added to kernel symbol table.
mf = 0x26e75e90: value = 636346784 = 0x25ede1a0
JPAX-DP> fputs("TEST",mf)
value = 0 = 0x0
JPAX-DP> fclose(mf)
value = 0 = 0x0
JPAX-DP> ls("flash:/")
flash:/switch_demo_rem.vxs
flash:/switch_demo_lb_on.vxs
flash:/switch_demo_lb_off.vxs
flash:/switch_demo1b.vxs
flash:/switch_demo1a.vxs
flash:/switch_demo.vxs
flash:/sanity.soc
flash:/rc.soc
flash:/protection_init.vxs
flash:/pack_demo.vxs
flash:/init.vxs
flash:/config.bcm
flash:/BCM56440_B0_0.srec
flash:/BCM56440_A0_1.srec
flash:/BCM56440_A0_0.srec
flash:/jpax_msg.log
flash:/jpax_err.log
flash:/ngfm.bin
flash:/test

最佳答案

确保正确地声明了“ buf”并且足够大。

关于c - 从vxworks中的ftp套接字读取，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/20574759/