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Top Forums Programming Kernel module - How to test if file doesn't exist Post 302501320 by disaster on Thursday 3rd of March 2011 09:53:01 AM
Old 03-03-2011
Nope. Smilie
I tried
if(fp->f_dentry == NULL)

if(!fp->f_dentry)

and now
if(fp->f_dentry == (void *) 0L)

Always the same crash:
Code:
[  967.249027] BUG: unable to handle kernel NULL pointer dereference at 0000000a
[  967.249032] IP: [<f086c147>] openFile+0x57/0x1a8 [elfreader]
[  967.249044] *pde = 205ca067 *pte = 00000000 
[  967.249048] Oops: 0000 [#1] SMP


But thanks for your input nonetheless
 

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ibtl(7D)							      Devices								  ibtl(7D)

NAME
ibtl - Solaris InfiniBand Transport Layer DESCRIPTION
InfiniBand (IB) is an I/O technology based on switched fabrics. The Solaris InfiniBand Transport Layer (IBTL) is a Solaris kernel misc mod- ule and adheres to the IB Architecture Version 1.1 specification and provides a transport layer abstraction to IB client drivers. IBTL implements the programming interfaces for the Solaris InfiniBand Transport Framework (IBTF), consisting of the IB Channel Interface (CI) and the IB Transport Interface (TI). The CI consists of Host Channel Adapters (HCAs) and HCA drivers. A host is attached to the IB fabric through the CI layer. The Solaris InfiniBand CI is Sun's API rendering of the InfiniBand Architecture (IBTA) "verbs" specification. The Solaris InfiniBand TI is the kernel service driver interface into the Solaris InfiniBand Transport Framework. It provides transport and communications setup programming interfaces for Unreliable Datagram (UD) and Reliable Connected (RC) transport types only. FILES
/kernel/misc/ibtl 32-bit x86 ELF kernel misc module /kernel/misc/amd64/ibtl 64-bit x86 ELF kernel misc module /kernel/misc/sparcv9/ibtl 64-bit SPARC ELF kernel module ATTRIBUTES
See attributes(5) for a description of the following attribute: +-----------------------------+-----------------------------+ |ATTRIBUTE TYPE |ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Consolidation Private | +-----------------------------+-----------------------------+ |Availability |SUNWhea, SUNWib | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5), ib(7D), ibcm(7D), ibdm(7D) InfiniBand Architecture Specification, Volume 1: Release 1.1 SunOS 5.10 9 Oct 2004 ibtl(7D)
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