From: "Robert P. J. Day" <rpjday@crashcourse.ca>
To: valdis.kletnieks@vt.edu
Cc: Kernel Newbies <kernelnewbies@kernelnewbies.org>
Subject: Re: why are some stat.h "S_*" perm macros not exported via uapi?
Date: Tue, 1 Jan 2019 04:41:30 -0500 (EST) [thread overview]
Message-ID: <alpine.LFD.2.21.1901010440130.19626@localhost.localdomain> (raw)
In-Reply-To: <9205.1546303487@turing-police.cc.vt.edu>
On Mon, 31 Dec 2018, valdis.kletnieks@vt.edu wrote:
> On Mon, 31 Dec 2018 14:53:30 -0500, "Robert P. J. Day" said:
>
> > #define S_IRWXUGO (S_IRWXU|S_IRWXG|S_IRWXO)
> > #define S_IALLUGO (S_ISUID|S_ISGID|S_ISVTX|S_IRWXUGO)
> > #define S_IRUGO (S_IRUSR|S_IRGRP|S_IROTH)
> > #define S_IWUGO (S_IWUSR|S_IWGRP|S_IWOTH)
> > #define S_IXUGO (S_IXUSR|S_IXGRP|S_IXOTH)
>
> Can you give an actual non-contrived example of code where one of
> these would be preferable to inline coding the mask? And do you plan
> to include all the various combos? And why should that be done in
> the uapi headers, rather than glibc/musl/other_c_lib providing it?
... snip ...
i am not *defending* the above macros, simply pointing out that,
unlike all the other simpler macros that *are* exported via uapi,
these are left all by their lonesome in kernel space. i'm just
wondering if there's a reason for that.
rday
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Robert P. J. Day Ottawa, Ontario, CANADA
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prev parent reply other threads:[~2019-01-01 9:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-31 19:53 why are some stat.h "S_*" perm macros not exported via uapi? Robert P. J. Day
2019-01-01 0:44 ` valdis.kletnieks
2019-01-01 9:41 ` Robert P. J. Day [this message]
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