comparison rust/hg-core/src/dirstate_tree/dirstate_map.rs @ 47675:48aec076b8fb

dirstate-v2: Enforce data size read from the docket file

The data file may not be shorter than its size given by the docket.
It may be longer, but additional data is ignored.

Differential Revision: https://phab.mercurial-scm.org/D11089

47674:ff97e793ed36

            ignore_patterns_hash: [0; on_disk::IGNORE_PATTERNS_HASH_LEN],
        }
    }

    #[timed]
    pub fn new_v2(on_disk: &'on_disk [u8]) -> Result<Self, DirstateError> {
        Ok(on_disk::read(on_disk)?)
    }

    #[timed]
    pub fn new_v1(
        on_disk: &'on_disk [u8],

47675:48aec076b8fb

            ignore_patterns_hash: [0; on_disk::IGNORE_PATTERNS_HASH_LEN],
        }
    }

    #[timed]
    pub fn new_v2(
        on_disk: &'on_disk [u8],
        data_size: usize,
    ) -> Result<Self, DirstateError> {
        if let Some(data) = on_disk.get(..data_size) {
            Ok(on_disk::read(data)?)
        } else {
            Err(DirstateV2ParseError.into())
        }
    }

    #[timed]
    pub fn new_v1(
        on_disk: &'on_disk [u8],