Control Operations using ioctl

spatlou

Mapping unlocked_ioctl()

spatlou

spatlou

Implement DEVRESET Command

quantum_size = ldev->quantum_size = QUANTUM_SIZE;

qset_size = ldev->qset_size = QSET_SIZE;

data_size = ldev->data_size = DATA_SIZE;

device_size = ldev->device_size = DEVICE_SIZE;

dhananjay.patel

I am facing the error while implementing ioctl in device driver during driving building

Do you want to build driver(y/n)?ymake -C /lib/modules/5.5.10/build M=/home/fedora/Desktop/Driver_File/27.ioctl_1 modules

make[1]: Entering directory '/usr/src/kernels/linux-5.5.10'

CC [M] /home/fedora/Desktop/Driver_File/27.ioctl_1/init.o

CC [M] /home/fedora/Desktop/Driver_File/27.ioctl_1/clean.o

CC [M] /home/fedora/Desktop/Driver_File/27.ioctl_1/opendev.o

CC [M] /home/fedora/Desktop/Driver_File/27.ioctl_1/releasedev.o

CC [M] /home/fedora/Desktop/Driver_File/27.ioctl_1/trimdev.o

CC [M] /home/fedora/Desktop/Driver_File/27.ioctl_1/writedev.o

CC [M] /home/fedora/Desktop/Driver_File/27.ioctl_1/readdev.o

CC [M] /home/fedora/Desktop/Driver_File/27.ioctl_1/createscull.o

CC [M] /home/fedora/Desktop/Driver_File/27.ioctl_1/seekdevice.o

LD [M] /home/fedora/Desktop/Driver_File/27.ioctl_1/cdd131.o

Building modules, stage 2.

MODPOST 1 modules

ERROR: "ioctl_dev" [/home/fedora/Desktop/Driver_File/27.ioctl_1/cdd131.ko] undefined!

make[2]: *** [scripts/Makefile.modpost:94: __modpost] Error 1

make[1]: *** [Makefile:1606: modules] Error 2

make[1]: Leaving directory '/usr/src/kernels/linux-5.5.10'

make: *** [Makefile:12: default] Error 2

Driver build failed

gaurav133232

Iam getting this error while checking any command except DEVRESET

mainMenu:Begin.

mainMenu: Device Menu
mainMenu: 1. Open Device for Write
mainMenu: 2. Open Device for Read
mainMenu: 6. IOCTL
mainMenu: 0. Exit Application
6
unlocked_ioctl:Begin.
Enter your command number:
5
5
5
0
ioctl: Operation not permitted

Control Operations using ioctl

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