* Re: master 9fc3b00373: Improve `restart-emacs' error reporting
[not found] ` <20220418090310.749C3C01684@vcs2.savannah.gnu.org>
@ 2022-04-18 9:08 ` Po Lu
2022-04-18 9:13 ` Lars Ingebrigtsen
0 siblings, 1 reply; 3+ messages in thread
From: Po Lu @ 2022-04-18 9:08 UTC (permalink / raw)
To: emacs-devel; +Cc: Lars Ingebrigtsen
Lars Ingebrigtsen <larsi@gnus.org> writes:
> + /* Check that the binary hasn't gone away. */
> + if (!file_access_p (initial_argv[0], F_OK))
> + error ("Emacs executable \"%s\" can't be found", initial_argv[0]);
> + }
How would this work if initial_argv[0] is a binary in the PATH, not a
file name?
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: master 9fc3b00373: Improve `restart-emacs' error reporting
2022-04-18 9:08 ` master 9fc3b00373: Improve `restart-emacs' error reporting Po Lu
@ 2022-04-18 9:13 ` Lars Ingebrigtsen
2022-04-18 9:21 ` Philipp Stephani
0 siblings, 1 reply; 3+ messages in thread
From: Lars Ingebrigtsen @ 2022-04-18 9:13 UTC (permalink / raw)
To: Po Lu; +Cc: emacs-devel
Po Lu <luangruo@yahoo.com> writes:
> How would this work if initial_argv[0] is a binary in the PATH, not a
> file name?
Oh, it won't. But I was thinking we'd need to store the actual binary
we're using (because of --chdir/default-directory problems) somewhere,
so I'll be adjusting the test and code from argv[0] to the actual
binary in a while.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: master 9fc3b00373: Improve `restart-emacs' error reporting
2022-04-18 9:13 ` Lars Ingebrigtsen
@ 2022-04-18 9:21 ` Philipp Stephani
0 siblings, 0 replies; 3+ messages in thread
From: Philipp Stephani @ 2022-04-18 9:21 UTC (permalink / raw)
To: Lars Ingebrigtsen; +Cc: Po Lu, Emacs developers
Am Mo., 18. Apr. 2022 um 11:14 Uhr schrieb Lars Ingebrigtsen <larsi@gnus.org>:
>
> Po Lu <luangruo@yahoo.com> writes:
>
> > How would this work if initial_argv[0] is a binary in the PATH, not a
> > file name?
>
> Oh, it won't. But I was thinking we'd need to store the actual binary
> we're using (because of --chdir/default-directory problems) somewhere,
> so I'll be adjusting the test and code from argv[0] to the actual
> binary in a while.
On GNU/Linux, use getauxval(AT_EXECFN) or (probably even better)
getauxval(AT_EXECFD) with fexecve.
^ permalink raw reply [flat|nested] 3+ messages in thread
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[not found] ` <20220418090310.749C3C01684@vcs2.savannah.gnu.org>
2022-04-18 9:08 ` master 9fc3b00373: Improve `restart-emacs' error reporting Po Lu
2022-04-18 9:13 ` Lars Ingebrigtsen
2022-04-18 9:21 ` Philipp Stephani
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