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Old 10-01-2011, 12:54 PM   #1
Jae-Yong Yoo
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Registered: Jul 2011
Posts: 20

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Where is "sys_ioctl" implemented?


I was touring through the Linux kernel source code ( and I found that the user-space "ioctl" is mapped to kernel-space function "sys_ioctl".
I was searching the kernel source code but I can not find the body of that function.
Also, does not show the sys_ioctl function body although I see many functions use that one.

Any help?

Old 10-01-2011, 01:13 PM   #2
Jae-Yong Yoo
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Registered: Jul 2011
Posts: 20

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I just found out that when I call ioctl, it calls do_vfs_ioctl (at fs/ioctl.c in liunx kernel source code) but still is a mistery how it is called.


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