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resolveExprPath(): Handle symlinks

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Eelco Dolstra 2022-05-17 12:41:09 +02:00
parent fdba67d4fa
commit 2a53574675
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GPG key ID: 8170B4726D7198DE
1 changed files with 4 additions and 20 deletions
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24
src/libexpr/parser.y
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@ -678,31 +678,15 @@ Expr * EvalState::parse(char * text, size_t length, FileOrigin origin,
SourcePath resolveExprPath(const SourcePath & path) SourcePath resolveExprPath(const SourcePath & path)
{ {
#if 0
unsigned int followCount = 0, maxFollow = 1024;
/* If `path' is a symlink, follow it. This is so that relative /* If `path' is a symlink, follow it. This is so that relative
path references work. */ path references work. */
struct stat st; SourcePath path2 { path.accessor, path.path.resolveSymlinks() };
while (true) {
// Basic cycle/depth limit to avoid infinite loops.
if (++followCount >= maxFollow)
throw Error("too many symbolic links encountered while traversing the path '%s'", path);
st = lstat(path);
if (!S_ISLNK(st.st_mode)) break;
path = absPath(readLink(path), dirOf(path));
}
/* If `path' refers to a directory, append `/default.nix'. */ /* If `path' refers to a directory, append `/default.nix'. */
if (S_ISDIR(st.st_mode)) if (path2.lstat().type == InputAccessor::tDirectory)
path = canonPath(path + "/default.nix"); return path2 + "default.nix";
return path; return path2;
#endif
// FIXME
auto path2 = path + "default.nix";
return path2.pathExists() ? path2 : path;
} }