Date: Mon, 26 Mar 2012 10:41:09 +0800 From: Yong Fan <yong.fan@exar.com> To: "drivers@FreeBSD.org" <drivers@freebsd.org> Subject: operate file in kernel space Message-ID: <88AB8EB2D3F1D249AE07FAFFF17A396F0384CEFB5B@HZU1EXCH02.hq.exar.com>
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Hi all, I want to operate file in kernel space. At present, I have found the following kernel routines, which operate file: Kern_open(), kern_close(), kern_readv() and kern_writev(). Now, I have some doubt about these routines? 1 kern_open() doesn't return a file handle or file pointer? As we know, filp_open(), which is a Linux kernel routine, returns a file po= inter. ZwCreateFile(), which is a Windows kernel routine, returns a file handle. 2 how can I "seek" a file in kernel space? The function of "seek" routine is similar with generic_file_llseek()(Linux)= or ZwSetInformationFile()(windows). Thanks Yongfan ________________________________ The information and any attached documents contained in this message may be confidential and/or legally privileged. The message is intended solely for the addressee(s). If you are not the intended recipient, you are hereby notified that any use, dissemination, or reproduction is strictly prohibited and may be unlawful. If you are not the intended recipient, please contact the sender immediately by return e-mail and destroy all copies of the original message.
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