feat: new constants folder

src/RawPOSIX/src/constants/fs_constants.rs

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+//! File System Constants Module
+//! These constants define file system-related flags and parameters
+//! 
+//! Primary Source References:
+//! - Linux kernel v6.5: include/uapi/asm-generic/fcntl.h
+//! - Linux kernel v6.5: include/uapi/linux/stat.h
+//! - POSIX.1-2017 (IEEE Std 1003.1-2017)
+
+#![allow(dead_code)]
+#![allow(unused_variables)]
+
+use crate::interface;
+
+// ===== File Descriptor Constants =====
+pub const DT_UNKNOWN: u8 = 0;
+
+pub const STARTINGFD: i32 = 0;       // Starting file descriptor number
+pub const MAXFD: i32 = 1024;         // Maximum number of file descriptors
+pub const STARTINGPIPE: i32 = 0;     // Starting pipe descriptor number
+pub const MAXPIPE: i32 = 1024;       // Maximum number of pipes
+
+// ===== Inode Constants =====
+pub const ROOTDIRECTORYINODE: usize = 1;  // Root directory inode number
+pub const STREAMINODE: usize = 2;         // Stream inode number
+
+// ===== Pipe Constants =====
+pub const PIPE_CAPACITY: usize = 65536;   // Maximum pipe buffer size
+
+// ===== File Access Permission Flags =====
+pub const F_OK: u32 = 0;     // Test for existence
+pub const X_OK: u32 = 1;     // Test for execute permission
+pub const W_OK: u32 = 2;     // Test for write permission
+pub const R_OK: u32 = 4;     // Test for read permission
+
+// ===== File Access Modes =====
+// Source: include/uapi/asm-generic/fcntl.h
+pub const O_RDONLY: i32 = 0o0;       // Open read-only
+pub const O_WRONLY: i32 = 0o1;       // Open write-only
+pub const O_RDWR: i32 = 0o2;         // Open read-write
+pub const O_RDWRFLAGS: i32 = 0o3;    // Mask for access modes
+
+// ===== File Creation and Status Flags =====
+pub const O_CREAT: i32 = 0o100;      // Create file if it doesn't exist
+pub const O_EXCL: i32 = 0o200;       // Error if O_CREAT and file exists
+pub const O_NOCTTY: i32 = 0o400;     // Don't assign controlling terminal
+pub const O_TRUNC: i32 = 0o1000;     // Truncate file to zero length
+pub const O_APPEND: i32 = 0o2000;    // Append mode - writes always at end
+pub const O_NONBLOCK: i32 = 0o4000;  // Non-blocking mode
+// O_NDELAY=O_NONBLOCK
+pub const O_SYNC: i32 = 0o10000;     // Synchronous writes
+// O_FSYNC=O_SYNC
+pub const O_ASYNC: i32 = 0o20000;    // Signal-driven I/O
+pub const O_CLOEXEC: i32 = 0o2000000; // Close on exec
+
+pub const DEFAULTTIME: u64 = 1323630836;  // Default timestamp value
+
+// ===== File Permissions =====
+// Source: include/uapi/linux/stat.h
+pub const S_IRWXA: u32 = 0o777;  // All permissions for all users
+pub const S_IRWXU: u32 = 0o700;  // User read, write, execute
+pub const S_IRUSR: u32 = 0o400;  // User read
+pub const S_IWUSR: u32 = 0o200;  // User write
+pub const S_IXUSR: u32 = 0o100;  // User execute
+pub const S_IRWXG: u32 = 0o070;  // Group read, write, execute
+pub const S_IRGRP: u32 = 0o040;  // Group read
+pub const S_IWGRP: u32 = 0o020;  // Group write
+pub const S_IXGRP: u32 = 0o010;  // Group execute
+pub const S_IRWXO: u32 = 0o007;  // Others read, write, execute
+pub const S_IROTH: u32 = 0o004;  // Others read
+pub const S_IWOTH: u32 = 0o002;  // Others write
+pub const S_IXOTH: u32 = 0o001;  // Others execute
+
+//Commands for FCNTL
+pub const F_DUPFD: i32 = 0;
+pub const F_GETFD: i32 = 1;
+pub const F_SETFD: i32 = 2;
+pub const F_GETFL: i32 = 3;
+pub const F_SETFL: i32 = 4;
+pub const F_GETLK: i32 = 5;
+pub const F_GETLK64: i32 = 5;
+pub const F_SETLK: i32 = 6;
+pub const F_SETLK64: i32 = 6;
+pub const F_SETLKW: i32 = 7;
+pub const F_SETLKW64: i32 = 7;
+pub const F_SETOWN: i32 = 8;
+pub const F_GETOWN: i32 = 9;
+pub const F_SETSIG: i32 = 10;
+pub const F_GETSIG: i32 = 11;
+pub const F_SETLEASE: i32 = 1024;
+pub const F_GETLEASE: i32 = 1025;
+pub const F_NOTIFY: i32 = 1026;
+
+//Commands for IOCTL
+pub const FIONBIO: u32 = 21537;
+pub const FIOASYNC: u32 = 21586;
+
+//File types for open/stat etc.
+pub const S_IFBLK: i32 = 0o60000;
+pub const S_IFCHR: i32 = 0o20000;
+pub const S_IFDIR: i32 = 0o40000;
+pub const S_IFIFO: i32 = 0o10000;
+pub const S_IFLNK: i32 = 0o120000;
+pub const S_IFREG: i32 = 0o100000;
+pub const S_IFSOCK: i32 = 0o140000;
+pub const S_FILETYPEFLAGS: i32 = 0o170000;
+
+//for flock syscall
+pub const LOCK_SH: i32 = 1;
+pub const LOCK_EX: i32 = 2;
+pub const LOCK_UN: i32 = 8;
+pub const LOCK_NB: i32 = 4;
+//for mmap/munmap syscall
+pub const MAP_SHARED: i32 = 1;
+pub const MAP_PRIVATE: i32 = 2;
+pub const MAP_FIXED: i32 = 16;
+pub const MAP_ANONYMOUS: i32 = 32;
+pub const MAP_HUGE_SHIFT: i32 = 26;
+pub const MAP_HUGETLB: i32 = 262144;
+
+pub const PROT_NONE: i32 = 0;
+pub const PROT_READ: i32 = 1;
+pub const PROT_WRITE: i32 = 2;
+pub const PROT_EXEC: i32 = 4;
+
+pub const SEEK_SET: i32 = 0;     // Seek from beginning of file
+pub const SEEK_CUR: i32 = 1;     // Seek from current position
+pub const SEEK_END: i32 = 2;     // Seek from end of file
+
+pub const IPC_PRIVATE: i32 = 0o0;
+pub const IPC_CREAT: i32 = 0o1000;
+pub const IPC_EXCL: i32 = 0o2000;
+
+pub const IPC_RMID: i32 = 0;
+pub const IPC_SET: i32 = 1;
+pub const IPC_STAT: i32 = 2;
+
+pub const SHM_DEST: i32 = 0o1000;    // Destroy segment when last process detaches
+pub const SHM_LOCKED: i32 = 0o2000;  // Lock segment in memory
+pub const SHM_HUGETLB: i32 = 0o4000; // Use huge TLB pages
+
+pub const SHM_R: i32 = 0o400;        // Read permission
+pub const SHM_W: i32 = 0o200;        // Write permission
+pub const SHM_RDONLY: i32 = 0o10000; // Read-only access
+pub const SHM_RND: i32 = 0o20000;    // Round attach address to SHMLBA
+pub const SHM_REMAP: i32 = 0o40000;  // Take-over region on attach
+pub const SHM_EXEC: i32 = 0o100000;  // Execute permission
+
+pub const SHMMIN: u32 = 1;           // Minimum shared memory segment size
+pub const SHMMNI: u32 = 4096;        // Maximum number of segments system wide
+pub const SHMMAX: u32 = 4278190079;  // Maximum shared memory segment size
+pub const SHMALL: u32 = 4278190079;  // Maximum total shared memory system wide
+pub const SHMSEG: u32 = SHMMNI;      // Maximum segments per process
+
+pub const SEM_VALUE_MAX: u32 = 2147483647;  // Maximum value for a semaphore
+
+// ===== Memory Protection Flags =====
+// Source: include/uapi/asm-generic/mman-common.h
+pub const PROT_NONE: i32 = 0x0;    // Page cannot be accessed
+pub const PROT_READ: i32 = 0x1;    // Page can be read
+pub const PROT_WRITE: i32 = 0x2;   // Page can be written
+pub const PROT_EXEC: i32 = 0x4;    // Page can be executed
+
+// Mask for all protection bits
+// Note: Some architectures may support additional bits
+pub const PROT_MASK: u32 = 0x7;
+
+// ===== Memory Mapping Flags =====
+// Source: include/uapi/asm-generic/mman.h
+pub const MAP_SHARED: u32 = 0x01;   // Share changes with other processes
+pub const MAP_PRIVATE: u32 = 0x02;  // Changes are private to this process
+pub const MAP_SHARING_MASK: u32 = 0x03;  // Mask to isolate sharing bits
+
+pub const MAP_FIXED: u32 = 0x10;    // Interpret address exactly
+pub const MAP_ANON: u32 = 0x20;     // Don't use a file descriptor
+pub const MAP_ANONYMOUS: u32 = MAP_ANON;  // Linux alias for MAP_ANON
+
+// ===== Page Size Constants =====
+// Note: These values are architecture-dependent
+// Current values are for x86_64 Linux
+pub const PAGESHIFT: u32 = 12;           // 4KB pages (1 << 12 = 4096)
+pub const PAGESIZE: u32 = 1 << PAGESHIFT;
+
+// Lind-specific page size constants
+pub const MAP_PAGESHIFT: u32 = 16;       // Custom value for Lind
+pub const MAP_PAGESIZE: u32 = 1 << MAP_PAGESHIFT;
+
+// ===== Memory Mapping Error Value =====
+// Source: include/uapi/asm-generic/mman-common.h
+pub const MAP_FAILED: *mut std::ffi::c_void = (-1isize) as *mut std::ffi::c_void;
+
+// ===== Memory Remapping Flags =====
+// Source: include/uapi/asm-generic/mman-common.h
+pub const MREMAP_MAYMOVE: u32 = 0x01;  // Can relocate mapping
+pub const MREMAP_FIXED: u32 = 0x02;    // New address is specified exactly
+
+// ===== File Access Modes =====
+// Source: include/uapi/asm-generic/fcntl.h
+// NOTE: These should probably be moved to fs_constants.rs
+pub const O_ACCMODE: i32 = 0o003;  // Mask for file access modes
+pub const O_RDONLY: i32 = 0o0;     // Open read-only
+pub const O_WRONLY: i32 = 0o1;     // Open write-only
+pub const O_RDWR: i32 = 0o2;       // Open read-write

src/RawPOSIX/src/constants/mod.rs

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+pub mod fs_constants;
+pub mod net_constants;
+pub mod sys_constants;
+
+pub use fs_constants::*;
+pub use net_constants::*;
+pub use sys_constants::*;