From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: sathish.j@tatainfotech.com (SATHISH.J)
Cc: linux-kernel@vger.kernel.org
Subject: Re: Reg:flow of system call in linux
Date: Sun, 12 Aug 2001 15:10:38 +0100 (BST) [thread overview]
Message-ID: <E15Vvwt-0005m5-00@the-village.bc.nu> (raw)
In-Reply-To: <Pine.LNX.4.10.10108121903130.26368-100000@blrmail> from "SATHISH.J" at Aug 12, 2001 07:05:35 PM
> Can someone tell me about the flow of system call for eg. from open
> wrapper routine to sys_open() function or atleast please suggest me a
> book/website
> where I can get this info.
Userspace open() calls into glibc code
glibc does architecture dependant magic to make a syscall
The kernel syscall code does architecture dependant magic
The kernel calls sys_open
In the x86 case the magic is basically
Load arguments into the right registers
int 0x80
then the kernel code in arch/i386/kernel/entry.S
next prev parent reply other threads:[~2001-08-12 14:08 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-07-01 14:37 Reg crash utility installation SATHISH.J
2001-07-02 22:19 ` Patrick O'Rourke
2001-07-03 8:52 ` Reg kdb utility SATHISH.J
2001-07-03 10:39 ` Balbir Singh
2001-08-02 9:37 ` Reg char device driver on linux SATHISH.J
2001-08-12 13:35 ` Reg:flow of system call in linux SATHISH.J
2001-08-12 14:10 ` Alan Cox [this message]
2001-08-13 5:22 ` Reg System.map file SATHISH.J
2001-08-13 5:16 ` Keith Owens
2001-08-21 9:02 ` Reg core dump of KDE-2 SATHISH.J
2001-08-21 14:29 ` Ignacio Vazquez-Abrams
2001-08-23 12:59 ` command source code SATHISH.J
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