单rt-smart系统中如何在代码中执行msh执行mount指令

问题描述

系统：rt-smart
问题：程序中挂载sd10设备（TF卡）到/tmp/sdcard_out目录失败
目前尝试使用mount（）、system（）、popen（）去执行命令都失败
在msh命令行使用mount sd10 /tmp/sdcard-out elm 能够正常挂载与使用
在rt-smart中，如何在程序中去执行msh命令行以后的指令，类似Linux中system（命令）

复现步骤

std::string device = "sd10";
std::string mount_point = "/tmp/sdcard_out";
std::string fstype = "elm";  
if (Files::Exists(mount_point.c_str())) {
    log_info("Mount point %s exists", mount_point.c_str());
} else {
    log_warning("Mount point %s not exist, creating...", mount_point.c_str());
    if (Files::CreateDirectory(mount_point.c_str()) != 0) {
        log_error("Failed to create mount point %s", mount_point.c_str());
    }
}

int ret = mount(device.c_str(), mount_point.c_str(), fstype.c_str(), 0, NULL);
if (ret == 0) {
    log_success("SD card mounted successfully via mount()");
    struct statvfs vfs;
    if (statvfs(mount_point.c_str(), &vfs) == 0) {
        unsigned long long total = (unsigned long long)vfs.f_blocks * vfs.f_frsize;
        unsigned long long free  = (unsigned long long)vfs.f_bfree  * vfs.f_frsize;
        log_info("Total: %.2f GB, Free: %.2f GB",
                 total / (1024.0*1024*1024),
                 free  / (1024.0*1024*1024));
    } else {
        log_error("statvfs failed: %s (errno=%d)", strerror(errno), errno);
    }
} else {
    log_error("mount failed: %s (errno=%d)", strerror(errno), errno);
}

[INFO] 2025-01-01 09:06:14 : Mount point /tmp/sdcard_out exists
[SUCCESS] 2025-01-01 09:06:14 : SD card mounted successfully via mount()
[INFO] 2025-01-01 09:06:14 : Total: 0.00 GB, Free: 0.00 GB

msh /data>mount
filesystem device mountpoint

devfs (NULL) /dev
procfs (NULL) /proc
rom (NULL) /
tmp (NULL) /dev/shm
tmp (NULL) /tmp
tmp (NULL) /etc
elm sd00 /bin
elm sd01 /sdcard
elm sd02 /data

手动挂载可以：
msh /data>mount sd10 /tmp/sdcard_out elm
mount device sd10(elm) onto /tmp/sdcard_out ... succeed!

msh /data>mount
filesystem device mountpoint

devfs (NULL) /dev
procfs (NULL) /proc
rom (NULL) /
tmp (NULL) /dev/shm
tmp (NULL) /tmp
tmp (NULL) /etc
elm sd00 /bin
elm sd01 /sdcard
elm sd02 /data
elm sd10 /tmp/sdcard_out

硬件板卡

DShanPI CanMV V2

软件版本

local_nncase_v2.11.0