--- Begin Message ---
Subject: |
‘primitive-load’ should open files with O_CLOEXEC |
Date: |
Sat, 03 Sep 2022 21:24:12 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.1 (gnu/linux) |
Hi,
Currently ‘primitive-load’ opens files without O_CLOEXEC:
port = scm_open_file_with_encoding (filename,
scm_from_latin1_string ("r"),
SCM_BOOL_T, /* guess_encoding */
scm_from_latin1_string ("UTF-8"));
We should fix that; here’s an example where it shows:
--8<---------------cut here---------------start------------->8---
$ guix shell bash -- sh -c 'ls -l /proc/$$/fd'
total 0
lrwx------ 1 ludo users 64 Sep 3 21:20 0 -> /dev/pts/0
lrwx------ 1 ludo users 64 Sep 3 21:20 1 -> /dev/pts/0
lrwx------ 1 ludo users 64 Sep 3 21:20 2 -> /dev/pts/0
lr-x------ 1 ludo users 64 Sep 3 21:20 3 -> /proc/9563/fd
lr-x------ 1 ludo users 64 Sep 3 21:20 5 ->
/gnu/store/4qbqaa4dgr2fwjjs9i2naqrd0djrcnw3-guix-command
$ head -1 $(type -P guix)
#!/gnu/store/9z95jms1r801z1kxpiq5xw594cxaw5jx-guile-wrapper/bin/guile
--no-auto-compile
--8<---------------cut here---------------end--------------->8---
For a proper fix, one possibility would be to first augment
‘scm_i_mode_to_open_flags’ to recognize some letter for O_CLOEXEC. In
glibc, fopen(3) uses “e” for that.
Thoughts?
Ludo’.
--- End Message ---
--- Begin Message ---
Subject: |
Re: bug#57567: ‘primitive-load’ should open files with O_CLOEXEC |
Date: |
Wed, 07 Sep 2022 18:03:16 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.1 (gnu/linux) |
Ludovic Courtès <ludo@gnu.org> skribis:
> Currently ‘primitive-load’ opens files without O_CLOEXEC:
>
> port = scm_open_file_with_encoding (filename,
> scm_from_latin1_string ("r"),
> SCM_BOOL_T, /* guess_encoding */
> scm_from_latin1_string ("UTF-8"));
[...]
> For a proper fix, one possibility would be to first augment
> ‘scm_i_mode_to_open_flags’ to recognize some letter for O_CLOEXEC. In
> glibc, fopen(3) uses “e” for that.
I went ahead and did that:
0aa1a9976 'primitive-load' opens files with O_CLOEXEC.
a356ceebe Add support for "e" flag (O_CLOEXEC) to 'open-file'.
Ludo’.
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