266 lines
10 KiB
Python
266 lines
10 KiB
Python
import t, c
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from stdint import *
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# =============================================================================
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# POSIX Type Alias
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# Note: ssize_t has already been defined as t.CPtrDiffT in stdint.py, so we won’t repeat it here.
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# =============================================================================
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DIR: t.CTypedef = t.CVoid | t.CPtr # Opaque directory stream handle
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mode_t: t.CTypedef = t.CUInt32T # File mode/permission bits
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pid_t: t.CTypedef = t.CInt32T # Process ID
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off_t: t.CTypedef = t.CInt64T # File offset (Linux x86_64)
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dev_t: t.CTypedef = t.CUInt64T # Device number
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ino_t: t.CTypedef = t.CUInt64T # inode number
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nlink_t: t.CTypedef = t.CUInt64T # Hard link count
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uid_t: t.CTypedef = t.CUInt32T # User ID
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gid_t: t.CTypedef = t.CUInt32T # Group ID
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blksize_t: t.CTypedef = t.CInt64T # File I/O block size
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blkcnt_t: t.CTypedef = t.CInt64T # Allocated block count
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time_t: t.CTypedef = t.CInt64T # Calendar time seconds
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# =============================================================================
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# open() Flags
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# =============================================================================
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O_RDONLY: t.CDefine = 0
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O_WRONLY: t.CDefine = 1
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O_RDWR: t.CDefine = 2
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O_CREAT: t.CDefine = 0o100
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O_EXCL: t.CDefine = 0o200
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O_TRUNC: t.CDefine = 0o1000
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O_APPEND: t.CDefine = 0o2000
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O_NONBLOCK: t.CDefine = 0o4000
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O_CLOEXEC: t.CDefine = 0o2000000
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# =============================================================================
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# access() Test Flags
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# =============================================================================
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F_OK: t.CDefine = 0 # File exists
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R_OK: t.CDefine = 4 # Read permission
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W_OK: t.CDefine = 2 # Write permission
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X_OK: t.CDefine = 1 # Execute permission
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# =============================================================================
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# stat struct st_mode Mask and Type Bits
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# =============================================================================
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S_IFMT: t.CDefine = 0o170000 # Type mask bits
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S_IFSOCK: t.CDefine = 0o140000 # Socket
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S_IFLNK: t.CDefine = 0o120000 # Symbolic link
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S_IFREG: t.CDefine = 0o100000 # Regular file
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S_IFBLK: t.CDefine = 0o060000 # Block device
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S_IFDIR: t.CDefine = 0o040000 # Directory
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S_IFCHR: t.CDefine = 0o020000 # Character device
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S_IFIFO: t.CDefine = 0o010000 # FIFO/pipe
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# Permission Bits
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S_ISUID: t.CDefine = 0o4000 # Set-user-ID
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S_ISGID: t.CDefine = 0o2000 # Set-group-ID
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S_ISVTX: t.CDefine = 0o1000 # Sticky bit
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S_IRWXU: t.CDefine = 0o700 # Read/write/execute permission
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S_IRUSR: t.CDefine = 0o400 # User read permission
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S_IWUSR: t.CDefine = 0o200 # User write permission
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S_IXUSR: t.CDefine = 0o100 # User execute permission
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S_IRWXG: t.CDefine = 0o070 # Read/write/execute permission
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S_IRGRP: t.CDefine = 0o040 # Read permission
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S_IWGRP: t.CDefine = 0o020 # Write
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S_IXGRP: t.CDefine = 0o010 # Execute
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S_IRWXO: t.CDefine = 0o007 # Read/write/execute permission
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S_IROTH: t.CDefine = 0o004 # Other read permission
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S_IWOTH: t.CDefine = 0o002 # Other write permission
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S_IXOTH: t.CDefine = 0o001 # Other execute permission
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# =============================================================================
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# lseek() whence values
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# =============================================================================
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SEEK_SET: t.CDefine = 0
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SEEK_CUR: t.CDefine = 1
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SEEK_END: t.CDefine = 2
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# =============================================================================
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# Path/name length limits
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# =============================================================================
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PATH_MAX: t.CDefine = 4096
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NAME_MAX: t.CDefine = 255
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# =============================================================================
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# sysconf() parameters
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# =============================================================================
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_SC_NPROCESSORS_ONLN: t.CDefine = 84
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_SC_PAGESIZE: t.CDefine = 30
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_SC_CLK_TCK: t.CDefine = 2
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# =============================================================================
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# dirent struct d_type values
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# =============================================================================
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DT_UNKNOWN: t.CDefine = 0
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DT_FIFO: t.CDefine = 1
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DT_CHR: t.CDefine = 2
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DT_DIR: t.CDefine = 4
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DT_BLK: t.CDefine = 6
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DT_REG: t.CDefine = 8
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DT_LNK: t.CDefine = 10
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DT_SOCK: t.CDefine = 12
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DT_WHT: t.CDefine = 14
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# =============================================================================
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# waitpid() options
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# =============================================================================
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WNOHANG: t.CDefine = 1
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WUNTRACED: t.CDefine = 2
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WCONTINUED: t.CDefine = 8
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# =============================================================================
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# Struct: Linux x86_64 Layout
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# =============================================================================
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# struct stat (144 bytes, Linux x86_64 glibc layout)
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# Note: st_atim/st_mtim/st_ctim in C are struct timespec { tv_sec; tv_nsec; }
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# Here split into _sec/_nsec two LONGLONG fields to maintain binary compatibility
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class Stat():
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st_dev: dev_t # @ 0
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st_ino: ino_t # @ 8
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st_nlink: nlink_t # @ 16
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st_mode: mode_t # @ 24
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st_uid: uid_t # @ 28
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st_gid: gid_t # @ 32
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__pad0: INT # @ 36
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st_rdev: dev_t # @ 40
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st_size: off_t # @ 48
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st_blksize: blksize_t # @ 56
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st_blocks: blkcnt_t # @ 64
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st_atim_sec: time_t # @ 72
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st_atim_nsec: LONGLONG # @ 80
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st_mtim_sec: time_t # @ 88
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st_mtim_nsec: LONGLONG # @ 96
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st_ctim_sec: time_t # @ 104
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st_ctim_nsec: LONGLONG # @ 112
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__unused0: LONGLONG # @ 120
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__unused1: LONGLONG # @ 128
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__unused2: LONGLONG # @ 136
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# struct dirent (Linux x86_64, d_name is char[256])
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# Note: d_name is actually a fixed-length char[256], TransPyC uses CHARPTR as a placeholder (8 bytes).
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# Users usually access it via the read-only pointer returned by readdir, not by directly allocating a Dirent structure.
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class Dirent():
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d_ino: ino_t # @ 0
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d_off: off_t # @ 8
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d_reclen: USHORT # @ 16
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d_type: BYTE # @ 18
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d_name: CHARPTR # @ 19 (actually char[256], this is a placeholder)
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# =============================================================================
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# File operations (10)
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# =============================================================================
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def open(path: t.CConst | str, oflag: INT, *args) -> INT | t.State: pass
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def close(fd: INT) -> INT | t.State: pass
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def read(fd: INT, buf: bytes, count: t.CSizeT) -> ssize_t | t.State: pass
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def write(fd: INT, buf: t.CConst | bytes, count: t.CSizeT) -> ssize_t | t.State: pass
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def lseek(fd: INT, offset: off_t, whence: INT) -> off_t | t.State: pass
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def unlink(path: t.CConst | str) -> INT | t.State: pass
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def access(path: t.CConst | str, amode: INT) -> INT | t.State: pass
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def realpath(path: t.CConst | str, resolved: CHARPTR) -> CHARPTR | t.State: pass
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def rename(oldpath: t.CConst | str, newpath: t.CConst | str) -> INT | t.State: pass
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def chmod(path: t.CConst | str, mode: mode_t) -> INT | t.State: pass
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# =============================================================================
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# stat series (2)
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# =============================================================================
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def stat(path: t.CConst | str, buf: Stat | t.CPtr) -> INT | t.State: pass
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def fstat(fd: INT, buf: Stat | t.CPtr) -> INT | t.State: pass
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# =============================================================================
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# Directory operations (6)
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# =============================================================================
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def opendir(name: t.CConst | str) -> DIR | t.CPtr | t.State: pass
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def readdir(dirp: DIR | t.CPtr) -> Dirent | t.CPtr | t.State: pass
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def closedir(dirp: DIR | t.CPtr) -> INT | t.State: pass
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def mkdir(path: t.CConst | str, mode: mode_t) -> INT | t.State: pass
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def rmdir(path: t.CConst | str) -> INT | t.State: pass
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def getcwd(buf: CHARPTR, size: t.CSizeT) -> CHARPTR | t.State: pass
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def chdir(path: t.CConst | str) -> INT | t.State: pass
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# =============================================================================
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# Process operations (8)
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# =============================================================================
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def fork() -> pid_t | t.State: pass
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def execvp(file: t.CConst | str, argv: CHARPTR | t.CPtr) -> INT | t.State: pass
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def execv(path: t.CConst | str, argv: CHARPTR | t.CPtr) -> INT | t.State: pass
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def waitpid(pid: pid_t, status: INT | t.CPtr, options: INT) -> pid_t | t.State: pass
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def pipe(fds: INT | t.CPtr) -> INT | t.State: pass
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def dup2(oldfd: INT, newfd: INT) -> INT | t.State: pass
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def _exit(status: INT) -> t.CVoid | t.State: pass
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def getpid() -> pid_t | t.State: pass
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# =============================================================================
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# Environment operations (4)
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# =============================================================================
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def getenv(name: t.CConst | str) -> CHARPTR | t.State: pass
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def setenv(name: t.CConst | str, value: t.CConst | str, overwrite: INT) -> INT | t.State: pass
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def sysconf(name: INT) -> LONG | t.State: pass
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def isatty(fd: INT) -> INT | t.State: pass
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# =============================================================================
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# Inline macros (C macros, implemented as normal functions, not marked as t.CExtern)
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# =============================================================================
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# st_mode type determination
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def S_ISREG(mode: mode_t) -> bool:
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return (mode & S_IFMT) == S_IFREG
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def S_ISDIR(mode: mode_t) -> bool:
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return (mode & S_IFMT) == S_IFDIR
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def S_ISLNK(mode: mode_t) -> bool:
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return (mode & S_IFMT) == S_IFLNK
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def S_ISCHR(mode: mode_t) -> bool:
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return (mode & S_IFMT) == S_IFCHR
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def S_ISBLK(mode: mode_t) -> bool:
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return (mode & S_IFMT) == S_IFBLK
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def S_ISFIFO(mode: mode_t) -> bool:
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return (mode & S_IFMT) == S_IFIFO
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def S_ISSOCK(mode: mode_t) -> bool:
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return (mode & S_IFMT) == S_IFSOCK
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# waitpid status parsing
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def WIFEXITED(status: INT) -> bool:
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return (status & 0x7F) == 0
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def WEXITSTATUS(status: INT) -> INT:
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return (status >> 8) & 0xFF
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def WIFSIGNALED(status: INT) -> bool:
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return ((status & 0x7F) != 0) and ((status & 0x7F) != 0x7F)
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def WTERMSIG(status: INT) -> INT:
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return status & 0x7F
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