On Thu, Mar 26, 2020 at 11:18 AM Sebastian Huber < sebastian.hu...@embedded-brains.de> wrote:
> On 25/03/2020 20:33, Joel Sherrill wrote: > > > > On Wed, Mar 25, 2020 at 12:17 AM Eshan Dhawan <eshandhawa...@gmail.com> > wrote: > >> >> >> On Wed, Mar 25, 2020 at 4:01 AM Joel Sherrill <j...@rtems.org> wrote: >> >>> >>> >>> On Tue, Mar 24, 2020 at 4:57 PM Eshan Dhawan <eshandhawa...@gmail.com> >>> wrote: >>> >>>> Hello everyone, >>>> As @Vaibhav Gupta <vaibhav.varo...@gmail.com> suggested I have also >>>> added adding file descriptor functions to my GSOC project. >>>> I went through the mailing list archives for more information. >>>> RTEMS as its own file descriptor so the functions need to be >>>> implemented from scratch. >>>> I wanted to get more information related to it. >>>> >>> >>> What's the set of functions you are proposing for those not tracking >>> your draft proposal? >>> >> Link: >> https://docs.google.com/document/d/1n-JOFUbFn6V1kViAGWsEGbVHL9MxlMyKP0BbZhEA1Rs/edit?usp=sharing >> I haven't searched about the functions in the list yet. The list was made >> by Vaibhav, last year and he told me that it could be added to proposal >> this year as well. >> I read the archives that these need to be written from scratch. >> > > > Maybe not. I found at least this implementation of renameat() which was > implemented on top of existing calls: > > > https://github.com/lattera/freebsd/blob/master/contrib/openbsm/bin/auditdistd/renameat.h > > It should be in a C file but that shows it can be done. That directory has > a lot of these methods. > > Adding the *at() functions with an RTEMS-specific implementation would be > nice (and not difficult). The generic renameat() implementation for example > changes the current directory. One of the goals of this API is to avoid > exactly this. In glibc/Linux for example a system call is used: > > > https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/renameat.c;h=901d61f37e10d0c2df245c01bb2ef980d00e8f52;hb=HEAD > > https://github.com/torvalds/linux/blob/master/fs/namei.c#L4590 > Can you tell where to find details related to these function as well as how to implement them? :) thanks -Eshan
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