Use readlink instead of realpath so find_exe works for flatpaks#136
Merged
aejsmith merged 2 commits intoFeralInteractive:masterfrom May 7, 2019
Merged
Use readlink instead of realpath so find_exe works for flatpaks#136aejsmith merged 2 commits intoFeralInteractive:masterfrom
aejsmith merged 2 commits intoFeralInteractive:masterfrom
Conversation
Add a inline helper function and a helper macro to be able to automatically close file descriptors. Does nothing if the argument is NULL or the pointed to integer is < 0.
The realpath(3) will fail if the target does not exist (internally realpath will stat all the components of the link target path). This is a problem in the case of sandbox applications where the exe points to the absolute path *inside* the sandbox, e.g. to /app/bin/<name> in the case of flatpak. For these cases realpath(3) will then fail. Therefore use readlink(3) instead.
gicmo
changed the title
Contributor
Author
|
This is part of the ongoing efforts to make GameMode work with flatpak (see flathub/com.valvesoftware.Steam#77). |
Contributor
|
LGTM, thanks! |
afayaz-feral
pushed a commit
that referenced
this pull request
May 26, 2020
Use readlink instead of realpath so find_exe works for flatpaks
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Currently to find the executable for a game, a call to realpath(3) of /proc//exe is made. The realpath(3) call will fail if the target does not exist (internally realpath will stat all the components of the link target path). This is a problem in the case of sandbox applications where the exe points to the absolute path inside the sandbox, e.g. to /app/bin/ in the case of flatpak. For these cases realpath(3) will then fail. Therefore use readlink(3) instead.
I have omitted the call to stat for the target because I am not sure it is necessary (and most likely the target will exist, because it just requested gamemode). I can add it though. Also by using readlink(3) we lose the ability to resolve names with
..components but for our use case that should not matter.