PR 194 - Print path for AT_FDCWD

[Masatake YAMATO]

> Dear strace developers,
> 
> I would like to propose an enhancement consisting in printing the
> current working directory when having syscalls with AT_FDCWD
> parameter, this would be enabled when -y is used.
> 
> This feature would be very appreciated when digging into an strace
> where the program makes heavy use of relative paths, which makes it a
> big pain to get the path names.
> 
> See https://github.com/strace/strace/pull/194 for details.

I tired the change. It works fine. I like this feature.

Masatake YAMATO

> Note that 2 CI items are currently failing, they look like as
> false-positive to me.
> 
> Thanks,
> 
> Renaud.
> 
> On 9/18/21 19:24, Renaud Métrich wrote:
>> That's indeed interesting feature, it's not rare that I need to know
>> which dir curdir is as well. I think this could be implemented as a
>> decoder to AT_CWD, e.g. AT_CWD</some/path>.
>> I'll try working on this next week.
>>
>> On Thursday, September 9, 2021, Guy <galfandary at gmail.com> wrote:
>> > Hi,
>> >
>> > I'm using strace to find dependencies of complex system processes.
>> > A dependency for me is a file that is successfully accessed and that
>> > was not previously created by the process.
>> > The main missing piece is the ability to get the full path of the file
>> > being accessed.
>> > I added the equivalent of "pwdx pid" to the code.
>> > The only problem is with those "at" calls which are relative to dirfd.
>> > Still working on that one.
>> >
>> > I think it would be a nice enhancement to have an option to get the
>> > full paths.
>> >
>> > Thanks,
>> > Guy
>> > --
>> > Strace-devel mailing list
>> > Strace-devel at lists.strace.io
>> > https://lists.strace.io/mailman/listinfo/strace-devel
>> >
>> >
>>
>> -- 
>> -- 
>> Renaud
>> Sent from my phone, sorry for the typos...