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oh.. thank u.. but pls explain ioctl more.. or give a example like when it can be used ??

thank u so much for replying..
i have a few doubts--
1. where should i call these functions(device_read, device_open,..) in user or kernel space module ? or are these invoked automatically when...

referring to tldp.org/LDP/lkmpg/2.6/html/x569.html
pls explain --> 4.1.5. chardev.c example 4.1

i haven't understood the article.. pls explain it in simple lang....

:confused: :confused:...

what does the function wrapfs_d_revalidate and wrapfs_d_release do ??

(referring the copyright code at wrapfs.filesystems.org)

what are the functions of all these files

dentry.c
inode.c
file.c
inode.c
lookup.c
main.c
mmap.c

or could anyone provide any link explaining all the functions and tasks performed by...