diff options
Diffstat (limited to 'zen/symlink_target.h')
| -rw-r--r-- | zen/symlink_target.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/zen/symlink_target.h b/zen/symlink_target.h index 8580a9dd..24ce2313 100644 --- a/zen/symlink_target.h +++ b/zen/symlink_target.h @@ -50,7 +50,10 @@ SymlinkRawContent getSymlinkRawContent_impl(const Zstring& linkPath) //throw Sys const ssize_t bytesWritten = ::readlink(linkPath.c_str(), buf.data(), bufSize); if (bytesWritten < 0) THROW_LAST_SYS_ERROR("readlink"); - if (makeUnsigned(bytesWritten) >= bufSize) //detect truncation; not an error for readlink! + + ASSERT_SYSERROR(makeUnsigned(bytesWritten) <= bufSize); //better safe than sorry + + if (makeUnsigned(bytesWritten) == bufSize) //detect truncation; not an error for readlink! throw SysError(formatSystemError("readlink", L"", L"Buffer truncated.")); return {.targetPath = Zstring(buf.data(), bytesWritten)}; //readlink does not append 0-termination! |