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Check XDG_RUNTIME_DIR owner before creating session directory

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This avoids an issue when using `su` and running Kakoune which creates
a session directory owned by root and prevents the user from creating
more sessions.
This commit is contained in:
Maxime Coste 2021-01-25 17:12:18 +11:00
parent b8f1df6458
commit 7751c7e188
1 changed files with 4 additions and 0 deletions
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4
src/remote.cc
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@ -604,6 +604,10 @@ void make_session_directory()
// set sticky bit on the shared kakoune directory // set sticky bit on the shared kakoune directory
make_directory(format("{}/kakoune", tmpdir()), 01777); make_directory(format("{}/kakoune", tmpdir()), 01777);
} }
else if (struct stat st;
stat(xdg_runtime_dir.zstr(), &st) == 0 && st.st_uid != geteuid())
throw runtime_error("XDG_RUNTIME_DIR is not owned by current user");
make_directory(session_directory(), 0711); make_directory(session_directory(), 0711);
} }