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authorAlice Ryhl <aliceryhl@google.com>2025-06-16 12:41:48 +0000
committerMiguel Ojeda <ojeda@kernel.org>2025-07-14 01:34:12 +0200
commit17bbbefbf6715a543ff4713e26f7b8e6b7a876d6 (patch)
treec0937e87db7f6bb5dcdc1df8a0c5a51161c66f63 /tools/perf/scripts/python/exported-sql-viewer.py
parent8da881d39c1b7fd4a211587ba40f1c936909a11a (diff)
rust: uaccess: add UserSliceReader::strcpy_into_buf
This patch adds a more convenient method for reading C strings from userspace. Logic is added to NUL-terminate the buffer when necessary so that a &CStr can be returned. Note that we treat attempts to read past `self.length` as a fault, so this returns EFAULT if that limit is exceeded before `buf.len()` is reached. Reviewed-by: Danilo Krummrich <dakr@kernel.org> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Benno Lossin <lossin@kernel.org> Link: https://lore.kernel.org/r/20250616-strncpy-from-user-v5-2-2d3fb0e1f5af@google.com [ Use `from_mut` to clean `clippy::ref_as_ptr` lint. Reworded title. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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