diff options
Diffstat (limited to 'src/darwin_c.zig')
| -rw-r--r-- | src/darwin_c.zig | 149 |
1 files changed, 147 insertions, 2 deletions
diff --git a/src/darwin_c.zig b/src/darwin_c.zig index faeeea3c0..c6fc6a1f3 100644 --- a/src/darwin_c.zig +++ b/src/darwin_c.zig @@ -1,5 +1,13 @@ -usingnamespace @import("std").c; - +const std = @import("std"); +usingnamespace std.c; +const builtin = @import("builtin"); +const os = std.os; +const mem = std.mem; +const Stat = std.fs.File.Stat; +const Kind = std.fs.File.Kind; +const StatError = std.fs.File.StatError; +const errno = os.errno; +const zeroes = mem.zeroes; // int clonefileat(int src_dirfd, const char * src, int dst_dirfd, const char * dst, int flags); pub extern "c" fn clonefileat(c_int, [*c]const u8, c_int, [*c]const u8, uint32_t: c_int) c_int; // int fclonefileat(int srcfd, int dst_dirfd, const char * dst, int flags); @@ -11,3 +19,140 @@ pub extern "c" fn chmod([*c]const u8, mode_t) c_int; pub extern "c" fn fchmod(c_int, mode_t) c_int; pub extern "c" fn umask(mode_t) mode_t; pub extern "c" fn fchmodat(c_int, [*c]const u8, mode_t, c_int) c_int; + +pub extern "c" fn lstat([*c]const u8, [*c]libc_stat) c_int; +pub extern "c" fn lstat64([*c]const u8, [*c]libc_stat) c_int; + +pub fn lstat_absolute(path: [:0]const u8) StatError!Stat { + if (builtin.os.tag == .windows) { + var io_status_block: windows.IO_STATUS_BLOCK = undefined; + var info: windows.FILE_ALL_INFORMATION = undefined; + const rc = windows.ntdll.NtQueryInformationFile(self.handle, &io_status_block, &info, @sizeOf(windows.FILE_ALL_INFORMATION), .FileAllInformation); + switch (rc) { + .SUCCESS => {}, + .BUFFER_OVERFLOW => {}, + .INVALID_PARAMETER => unreachable, + .ACCESS_DENIED => return error.AccessDenied, + else => return windows.unexpectedStatus(rc), + } + return Stat{ + .inode = info.InternalInformation.IndexNumber, + .size = @bitCast(u64, info.StandardInformation.EndOfFile), + .mode = 0, + .kind = if (info.StandardInformation.Directory == 0) .File else .Directory, + .atime = windows.fromSysTime(info.BasicInformation.LastAccessTime), + .mtime = windows.fromSysTime(info.BasicInformation.LastWriteTime), + .ctime = windows.fromSysTime(info.BasicInformation.CreationTime), + }; + } + + var st = zeroes(libc_stat); + switch (errno(lstat64(path.ptr, &st))) { + 0 => {}, + EINVAL => unreachable, + EBADF => unreachable, // Always a race condition. + ENOMEM => return error.SystemResources, + EACCES => return error.AccessDenied, + else => |err| return os.unexpectedErrno(err), + } + + const atime = st.atime(); + const mtime = st.mtime(); + const ctime = st.ctime(); + return Stat{ + .inode = st.ino, + .size = @bitCast(u64, st.size), + .mode = st.mode, + .kind = switch (builtin.os.tag) { + .wasi => switch (st.filetype) { + os.FILETYPE_BLOCK_DEVICE => Kind.BlockDevice, + os.FILETYPE_CHARACTER_DEVICE => Kind.CharacterDevice, + os.FILETYPE_DIRECTORY => Kind.Directory, + os.FILETYPE_SYMBOLIC_LINK => Kind.SymLink, + os.FILETYPE_REGULAR_FILE => Kind.File, + os.FILETYPE_SOCKET_STREAM, os.FILETYPE_SOCKET_DGRAM => Kind.UnixDomainSocket, + else => Kind.Unknown, + }, + else => switch (st.mode & os.S_IFMT) { + os.S_IFBLK => Kind.BlockDevice, + os.S_IFCHR => Kind.CharacterDevice, + os.S_IFDIR => Kind.Directory, + os.S_IFIFO => Kind.NamedPipe, + os.S_IFLNK => Kind.SymLink, + os.S_IFREG => Kind.File, + os.S_IFSOCK => Kind.UnixDomainSocket, + else => Kind.Unknown, + }, + }, + .atime = @as(i128, atime.tv_sec) * std.time.ns_per_s + atime.tv_nsec, + .mtime = @as(i128, mtime.tv_sec) * std.time.ns_per_s + mtime.tv_nsec, + .ctime = @as(i128, ctime.tv_sec) * std.time.ns_per_s + ctime.tv_nsec, + }; +} + +pub fn stat_absolute(path: [:0]const u8) StatError!Stat { + if (builtin.os.tag == .windows) { + var io_status_block: windows.IO_STATUS_BLOCK = undefined; + var info: windows.FILE_ALL_INFORMATION = undefined; + const rc = windows.ntdll.NtQueryInformationFile(self.handle, &io_status_block, &info, @sizeOf(windows.FILE_ALL_INFORMATION), .FileAllInformation); + switch (rc) { + .SUCCESS => {}, + .BUFFER_OVERFLOW => {}, + .INVALID_PARAMETER => unreachable, + .ACCESS_DENIED => return error.AccessDenied, + else => return windows.unexpectedStatus(rc), + } + return Stat{ + .inode = info.InternalInformation.IndexNumber, + .size = @bitCast(u64, info.StandardInformation.EndOfFile), + .mode = 0, + .kind = if (info.StandardInformation.Directory == 0) .File else .Directory, + .atime = windows.fromSysTime(info.BasicInformation.LastAccessTime), + .mtime = windows.fromSysTime(info.BasicInformation.LastWriteTime), + .ctime = windows.fromSysTime(info.BasicInformation.CreationTime), + }; + } + + var st = zeroes(libc_stat); + switch (errno(stat(path.ptr, &st))) { + 0 => {}, + EINVAL => unreachable, + EBADF => unreachable, // Always a race condition. + ENOMEM => return error.SystemResources, + EACCES => return error.AccessDenied, + else => |err| return os.unexpectedErrno(err), + } + + const atime = st.atime(); + const mtime = st.mtime(); + const ctime = st.ctime(); + return Stat{ + .inode = st.ino, + .size = @bitCast(u64, st.size), + .mode = st.mode, + .kind = switch (builtin.os.tag) { + .wasi => switch (st.filetype) { + os.FILETYPE_BLOCK_DEVICE => Kind.BlockDevice, + os.FILETYPE_CHARACTER_DEVICE => Kind.CharacterDevice, + os.FILETYPE_DIRECTORY => Kind.Directory, + os.FILETYPE_SYMBOLIC_LINK => Kind.SymLink, + os.FILETYPE_REGULAR_FILE => Kind.File, + os.FILETYPE_SOCKET_STREAM, os.FILETYPE_SOCKET_DGRAM => Kind.UnixDomainSocket, + else => Kind.Unknown, + }, + else => switch (st.mode & os.S_IFMT) { + os.S_IFBLK => Kind.BlockDevice, + os.S_IFCHR => Kind.CharacterDevice, + os.S_IFDIR => Kind.Directory, + os.S_IFIFO => Kind.NamedPipe, + os.S_IFLNK => Kind.SymLink, + os.S_IFREG => Kind.File, + os.S_IFSOCK => Kind.UnixDomainSocket, + else => Kind.Unknown, + }, + }, + .atime = @as(i128, atime.tv_sec) * std.time.ns_per_s + atime.tv_nsec, + .mtime = @as(i128, mtime.tv_sec) * std.time.ns_per_s + mtime.tv_nsec, + .ctime = @as(i128, ctime.tv_sec) * std.time.ns_per_s + ctime.tv_nsec, + }; +} |