- Replace global errno variable with __errno_location function
- Add complete strerror implementation for standard error codes
- Implement perror function for error message output
- Move strlen implementation to separate string.c file
- Update getcwd to use new errno macro instead of direct variable
- Mark getcwd as weak symbol to allow overriding
- Remove unimplemented strerror stub from assembly file
- Add 128-bit integer helpers from compiler-rt builtins
- Update third-party dependencies with detailed documentation
- Improve curl download scripts with silent
- Add ATA disk cache with LRU eviction strategy and hit/miss statistics
- Introduce disk cache metrics accessible through kernel API
- Update boot sequence to enable long mode and execute-disable page permissions
- Replace custom syscalls with standard POSIX equivalents in user programs
- Add new user utilities including cat, echo and fault testing command
- Enhance FAT16 volume implementation with full path traversal and file operations
- Implement comprehensive filesystem layer supporting nested directories
- Add file operations for reading, writing, creating and deleting files/directories
- Include directory listing and
韩天峰