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In my initramfs.cpio I have only these directories:

root@localhost extract]# ls 
dev  init  tmp sys

dev has console and sys is empty.

init is a binary corresponding to program that I discussed in Accessing GPIO after kernel bootsAccessing GPIO after kernel boots.

Now in the same GPIO program I would like to write code to mount a /sys. I understand it can be mounted using mount:

mount -t sysfs none /sys

How do I write a C program that will implement the above line. Please note that I do not have a file system; initramfs.cpio has empty folders: /sys, /tmp. I can put more empty folder if required. But I cannot put full file system.

My main intention To access GPIO using this programprogram or otherwise, but without using a full file system. I dont need any other thing to run, but just want GPIO access (and LED blink)

In my initramfs.cpio I have only these directories:

root@localhost extract]# ls 
dev  init  tmp sys

dev has console and sys is empty.

init is a binary corresponding to program that I discussed in Accessing GPIO after kernel boots.

Now in the same GPIO program I would like to write code to mount a /sys. I understand it can be mounted using mount:

mount -t sysfs none /sys

How do I write a C program that will implement the above line. Please note that I do not have a file system; initramfs.cpio has empty folders: /sys, /tmp. I can put more empty folder if required. But I cannot put full file system.

My main intention To access GPIO using this program or otherwise, but without using a full file system. I dont need any other thing to run, but just want GPIO access (and LED blink)

In my initramfs.cpio I have only these directories:

root@localhost extract]# ls 
dev  init  tmp sys

dev has console and sys is empty.

init is a binary corresponding to program that I discussed in Accessing GPIO after kernel boots.

Now in the same GPIO program I would like to write code to mount a /sys. I understand it can be mounted using mount:

mount -t sysfs none /sys

How do I write a C program that will implement the above line. Please note that I do not have a file system; initramfs.cpio has empty folders: /sys, /tmp. I can put more empty folder if required. But I cannot put full file system.

My main intention To access GPIO using this program or otherwise, but without using a full file system. I dont need any other thing to run, but just want GPIO access (and LED blink)

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Mounting a file system using a C program

In my initramfs.cpio I have only these directories:

root@localhost extract]# ls 
dev  init  tmp sys

dev has console and sys is empty.

init is a binary corresponding to program that I discussed in Accessing GPIO after kernel boots.

Now in the same GPIO program I would like to write code to mount a /sys. I understand it can be mounted using mount:

mount -t sysfs none /sys

How do I write a C program that will implement the above line. Please note that I do not have a file system; initramfs.cpio has empty folders: /sys, /tmp. I can put more empty folder if required. But I cannot put full file system.

My main intention To access GPIO using this program or otherwise, but without using a full file system. I dont need any other thing to run, but just want GPIO access (and LED blink)