| 8 | |
| 9 | namespace FEX::FormatCheck { |
| 10 | bool IsSquashFS(const fextl::string& Filename) { |
| 11 | // If it is a regular file then we need to check if it is a valid archive |
| 12 | struct SquashFSHeader { |
| 13 | uint32_t magic; |
| 14 | uint32_t inode_count; |
| 15 | uint32_t mtime; |
| 16 | uint32_t block_size; |
| 17 | uint32_t fragment_entry_count; |
| 18 | uint16_t compression_id; |
| 19 | uint16_t block_log; |
| 20 | uint16_t flags; |
| 21 | uint16_t id_count; |
| 22 | uint16_t version_major; |
| 23 | uint16_t version_minor; |
| 24 | uint64_t More[8]; // More things that don't matter to us |
| 25 | }; |
| 26 | |
| 27 | SquashFSHeader Header {}; |
| 28 | int fd = open(Filename.c_str(), O_RDONLY | O_CLOEXEC); |
| 29 | if (fd == -1) { |
| 30 | return false; |
| 31 | } |
| 32 | |
| 33 | if (pread(fd, reinterpret_cast<char*>(&Header), sizeof(SquashFSHeader), 0) != sizeof(SquashFSHeader)) { |
| 34 | close(fd); |
| 35 | return false; |
| 36 | } |
| 37 | |
| 38 | close(fd); |
| 39 | |
| 40 | // Make sure the cookie matches |
| 41 | if (Header.magic == 0x73717368) { |
| 42 | // Sanity check the version |
| 43 | uint32_t version = (uint32_t)Header.version_major << 16 | Header.version_minor; |
| 44 | if (version >= 0x00040000) { |
| 45 | // Everything is sane, we can add it |
| 46 | return true; |
| 47 | } |
| 48 | } |
| 49 | return false; |
| 50 | } |
| 51 | |
| 52 | bool IsEroFS(const fextl::string& Filename) { |
| 53 | // v1 of EroFS has a 128byte header |
no test coverage detected