soc_fcntl.c

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#include "soc_common.h"
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>

int fcntl(int fd, int cmd, ...)
{
    int ret=0;
    int arg=0;
    u32 *cmdbuf = getThreadCommandBuffer();

    va_list args;

    if(cmd!=F_GETFL && cmd!=F_SETFL)
    {
        SOCU_errno = -EINVAL;
        return -1;
    }

    va_start(args, cmd);
    if(cmd==F_SETFL)
    {
        arg = va_arg(args, int);

        if(arg && arg!=O_NONBLOCK)
        {
            SOCU_errno = -EINVAL;
            va_end(args);
            return -1;
        }

        if(arg==O_NONBLOCK)arg = 0x4;
    }
    va_end(args);

    cmdbuf[0] = 0x001300C2;
    cmdbuf[1] = (u32)fd;
    cmdbuf[2] = (u32)cmd;
    cmdbuf[3] = (u32)arg;
    cmdbuf[4] = 0x20;

    if((ret = svcSendSyncRequest(SOCU_handle))!=0)return ret;

    ret = (int)cmdbuf[1];
    if(ret==0)ret = _net_convert_error(cmdbuf[2]);
    if(ret<0)SOCU_errno = ret;

    if(ret<0)return -1;
    return ret;
}