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Only try to chmod /nix/var/nix/profiles/per-user when necessary

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Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
(cherry picked from commit dcbf4dcc09)
This commit is contained in:
Sandro Jäckel 2025-02-01 16:49:31 +01:00 • committed by Mergify
parent 514f1dea44
commit 65583ca79b
1 changed files with 6 additions and 1 deletions
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7
src/libstore/local-store.cc
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@ -136,7 +136,12 @@ LocalStore::LocalStore(
for (auto & perUserDir : {profilesDir + "/per-user", gcRootsDir + "/per-user"}) { for (auto & perUserDir : {profilesDir + "/per-user", gcRootsDir + "/per-user"}) {
createDirs(perUserDir); createDirs(perUserDir);
if (!readOnly) { if (!readOnly) {
if (chmod(perUserDir.c_str(), 0755) == -1) auto st = lstat(perUserDir);
// Skip chmod call if the directory already has the correct permissions (0755).
// This is to avoid failing when the executing user lacks permissions to change the directory's permissions
// even if it would be no-op.
if ((st.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO)) != 0755 && chmod(perUserDir.c_str(), 0755) == -1)
throw SysError("could not set permissions on '%s' to 755", perUserDir); throw SysError("could not set permissions on '%s' to 755", perUserDir);
} }
} }