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slave: chdir to / after spawning the client application

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With this patch, the terminal process now changes PWD to / after
spawning the client application.

This ensures the terminal process itself does not "lock" a
directory. For example, we may keep a mount point from being
unmounted.

Closes #1528
This commit is contained in:
Daniel Eklöf 2024-01-03 14:07:15 +01:00
parent 14472cdbd9
commit 66f25bb434
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2 changed files with 13 additions and 0 deletions
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5
CHANGELOG.md
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@ -61,8 +61,13 @@
* config: ARGB color values now default to opaque, rather than
transparent, when the alpha component has been left out
([#1526][1526]).
* The `foot` process now changes CWD to `/` after spawning the shell
process. This ensures the terminal itself does not "lock" a
directory; for example, preventing a mount point from being
unmounted ([#1528][1528]).
[1526]: https://codeberg.org/dnkl/foot/issues/1526
[1528]: https://codeberg.org/dnkl/foot/issues/1528
### Deprecated

8
slave.c
View file

@ -401,6 +401,14 @@ slave_spawn(int ptmx, int argc, const char *cwd, char *const *argv,
break;
default: {
/*
* Don't stay in CWD, since it may be an ephemeral path. For
* example, it may be a mount point of, say, a thumb drive. Us
* keeping it open will prevent the user from unmounting it.
*/
chdir("/");
close(fork_pipe[1]); /* Close write end */
LOG_DBG("slave has PID %d", pid);