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Merge pull request #57 from Lind-Project/feat-constants-fs
feat: new constants folder
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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)] | ||
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use crate::interface; | ||
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// ===== File Descriptor Constants ===== | ||
pub const DT_UNKNOWN: u8 = 0; | ||
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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 | ||
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// ===== Inode Constants ===== | ||
pub const ROOTDIRECTORYINODE: usize = 1; // Root directory inode number | ||
pub const STREAMINODE: usize = 2; // Stream inode number | ||
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// ===== Pipe Constants ===== | ||
pub const PIPE_CAPACITY: usize = 65536; // Maximum pipe buffer size | ||
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// ===== 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 | ||
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// ===== 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 | ||
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// ===== 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 | ||
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pub const DEFAULTTIME: u64 = 1323630836; // Default timestamp value | ||
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// ===== 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 | ||
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//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; | ||
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//Commands for IOCTL | ||
pub const FIONBIO: u32 = 21537; | ||
pub const FIOASYNC: u32 = 21586; | ||
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//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; | ||
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//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; | ||
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pub const PROT_NONE: i32 = 0; | ||
pub const PROT_READ: i32 = 1; | ||
pub const PROT_WRITE: i32 = 2; | ||
pub const PROT_EXEC: i32 = 4; | ||
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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 | ||
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pub const IPC_PRIVATE: i32 = 0o0; | ||
pub const IPC_CREAT: i32 = 0o1000; | ||
pub const IPC_EXCL: i32 = 0o2000; | ||
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pub const IPC_RMID: i32 = 0; | ||
pub const IPC_SET: i32 = 1; | ||
pub const IPC_STAT: i32 = 2; | ||
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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 | ||
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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 | ||
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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 | ||
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pub const SEM_VALUE_MAX: u32 = 2147483647; // Maximum value for a semaphore | ||
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// ===== 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 | ||
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// Mask for all protection bits | ||
// Note: Some architectures may support additional bits | ||
pub const PROT_MASK: u32 = 0x7; | ||
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// ===== 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 | ||
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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 | ||
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// ===== 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; | ||
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// Lind-specific page size constants | ||
pub const MAP_PAGESHIFT: u32 = 16; // Custom value for Lind | ||
pub const MAP_PAGESIZE: u32 = 1 << MAP_PAGESHIFT; | ||
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// ===== 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; | ||
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// ===== 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 | ||
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// ===== 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 |
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pub mod fs_constants; | ||
pub mod net_constants; | ||
pub mod sys_constants; | ||
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pub use fs_constants::*; | ||
pub use net_constants::*; | ||
pub use sys_constants::*; |
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