Verified Commit c9731c65 authored by Tommaso Tocci's avatar Tommaso Tocci
Browse files

Bugfix: links to pipe raise exception 

In the kernel VFS some file descriptors under /proc/<PID>/fd/ could be
links to a pipe, this is a special case in which the `readlink` function
would not work. So when we detect this case we forward to kernel
parent 1cf0930a

ifs/src/preload/resolve.cpp

+2 −1
Original line number Diff line number Diff line
@@ -114,7 +114,8 @@ bool resolve_path (const std::string& path, std::string& resolved, bool resolve_ 
                char link_resolved[PATH_MAX_LEN];

                if (realpath(resolved.c_str(), link_resolved) == nullptr) {

                    CTX->log()->error("{}() Failed to get realpath for link '{}'. Error: {}", __func__, resolved, strerror(errno));

                    throw std::runtime_error("Failed to get realpath for link '" + resolved + "'. Error: " + strerror(errno));

                    resolved.append(path, end, std::string::npos);

                    return false;

                }

                // substituute resolved with new link path

                resolved = link_resolved;