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freebsd: add getdirentries

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This commit is contained in:
Marcio Giaxa 2018-12-17 22:06:28 -02:00
parent 666b153144
commit 5ea37f6e8c
3 changed files with 68 additions and 2 deletions
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12
std/c/freebsd.zig
View File

@ -13,6 +13,7 @@ pub extern "c" fn kevent(
pub extern "c" fn sysctl(name: [*]c_int, namelen: c_uint, oldp: ?*c_void, oldlenp: ?*usize, newp: ?*c_void, newlen: usize) c_int;
pub extern "c" fn sysctlbyname(name: [*]const u8, oldp: ?*c_void, oldlenp: ?*usize, newp: ?*c_void, newlen: usize) c_int;
pub extern "c" fn sysctlnametomib(name: [*]const u8, mibp: ?*c_int, sizep: ?*usize) c_int;
pub extern "c" fn getdirentries(fd: c_int, buf_ptr: [*]u8, nbytes: usize, basep: *i64) usize;
/// Renamed from `kevent` to `Kevent` to avoid conflict with function name.
pub const Kevent = extern struct {
@ -66,3 +67,14 @@ pub const timespec = extern struct {
tv_sec: isize,
tv_nsec: isize,
};
pub const dirent = extern struct {
d_fileno: usize,
d_off: i64,
d_reclen: u64,
d_type: u8,
d_pad0: u8,
d_namlen: u16,
d_pad1: u16,
d_name: [256]u8,
};

5
std/os/freebsd/index.zig
View File

@ -562,6 +562,10 @@ pub fn getdents(fd: i32, dirp: [*]u8, count: usize) usize {
return arch.syscall3(SYS_getdents, @bitCast(usize, isize(fd)), @ptrToInt(dirp), count);
}
pub fn getdirentries(fd: i32, buf_ptr: [*]u8, buf_len: usize, basep: *i64) usize {
return errnoWrap(@bitCast(isize, c.getdirentries(fd, buf_ptr, buf_len, basep)));
}
pub fn isatty(fd: i32) bool {
var wsz: winsize = undefined;
return arch.syscall3(SYS_ioctl, @bitCast(usize, isize(fd)), TIOCGWINSZ, @ptrToInt(&wsz)) == 0;
@ -743,6 +747,7 @@ pub fn raise(sig: i32) usize {
}
pub const Stat = c.Stat;
pub const dirent = c.dirent;
pub const timespec = c.timespec;
pub fn fstat(fd: i32, stat_buf: *Stat) usize {

53
std/os/index.zig
View File

@ -1753,8 +1753,57 @@ pub const Dir = struct {
}
fn nextFreebsd(self: *Dir) !?Entry {
//self.handle.buf = try self.allocator.alloc(u8, page_size);
@compileError("TODO implement dirs for FreeBSD");
start_over: while (true) {
if (self.handle.index >= self.handle.end_index) {
if (self.handle.buf.len == 0) {
self.handle.buf = try self.allocator.alloc(u8, page_size);
}
while (true) {
const result = posix.getdirentries(self.handle.fd, self.handle.buf.ptr, self.handle.buf.len, &self.handle.seek);
const err = posix.getErrno(result);
if (err > 0) {
switch (err) {
posix.EBADF, posix.EFAULT, posix.ENOTDIR => unreachable,
posix.EINVAL => {
self.handle.buf = try self.allocator.realloc(u8, self.handle.buf, self.handle.buf.len * 2);
continue;
},
else => return unexpectedErrorPosix(err),
}
}
if (result == 0) return null;
self.handle.index = 0;
self.handle.end_index = result;
break;
}
}
const freebsd_entry = @ptrCast(*align(1) posix.dirent, &self.handle.buf[self.handle.index]);
const next_index = self.handle.index + freebsd_entry.d_reclen;
self.handle.index = next_index;
const name = @ptrCast([*]u8, &freebsd_entry.d_name)[0..freebsd_entry.d_namlen];
if (mem.eql(u8, name, ".") or mem.eql(u8, name, "..")) {
continue :start_over;
}
const entry_kind = switch (freebsd_entry.d_type) {
posix.DT_BLK => Entry.Kind.BlockDevice,
posix.DT_CHR => Entry.Kind.CharacterDevice,
posix.DT_DIR => Entry.Kind.Directory,
posix.DT_FIFO => Entry.Kind.NamedPipe,
posix.DT_LNK => Entry.Kind.SymLink,
posix.DT_REG => Entry.Kind.File,
posix.DT_SOCK => Entry.Kind.UnixDomainSocket,
posix.DT_WHT => Entry.Kind.Whiteout,
else => Entry.Kind.Unknown,
};
return Entry{
.name = name,
.kind = entry_kind,
};
}
}
};