1 package p9pnew
2 
3 import (
4 	"fmt"
5 	"time"
6 )
7 
8 const (
9 	NOFID = ^Fid(0)
10 	NOTAG = ^Tag(0)
11 )
12 
13 const (
14 	DMDIR    = 0x80000000 // mode bit for directories
15 	DMAPPEND = 0x40000000 // mode bit for append only files
16 	DMEXCL   = 0x20000000 // mode bit for exclusive use files
17 	DMMOUNT  = 0x10000000 // mode bit for mounted channel
18 	DMAUTH   = 0x08000000 // mode bit for authentication file
19 	DMTMP    = 0x04000000 // mode bit for non-backed-up files
20 
21 	// 9p2000.u extensions
22 	DMSYMLINK   = 0x02000000
23 	DMDEVICE    = 0x00800000
24 	DMNAMEDPIPE = 0x00200000
25 	DMSOCKET    = 0x00100000
26 	DMSETUID    = 0x00080000
27 	DMSETGID    = 0x00040000
28 
29 	DMREAD  = 0x4 // mode bit for read permission
30 	DMWRITE = 0x2 // mode bit for write permission
31 	DMEXEC  = 0x1 // mode bit for execute permission
32 )
33 
34 const (
35 	OREAD  = 0x00 // open for read
36 	OWRITE = 0x01 // write
37 	ORDWR  = 0x02 // read and write
38 	OEXEC  = 0x03 // execute, == read but check execute permission
39 
40 	// PROPOSAL(stevvooe): Possible protocal extension to allow the create of
41 	// symlinks. Initially, the link is created with no value. Read and write
42 	// to read and set the link value.
43 	OSYMLINK = 0x04
44 
45 	// or'd in
46 	OTRUNC  = 0x10 // or'ed in (except for exec), truncate file first
47 	OCEXEC  = 0x20 // or'ed in, close on exec
48 	ORCLOSE = 0x40 // or'ed in, remove on close
49 )
50 
51 type QType uint8
52 
53 const (
54 	QTDIR    QType = 0x80 // type bit for directories
55 	QTAPPEND QType = 0x40 // type bit for append only files
56 	QTEXCL   QType = 0x20 // type bit for exclusive use files
57 	QTMOUNT  QType = 0x10 // type bit for mounted channel
58 	QTAUTH   QType = 0x08 // type bit for authentication file
59 	QTTMP    QType = 0x04 // type bit for not-backed-up file
60 	QTFILE   QType = 0x00 // plain file
61 )
62 
63 func (qt QType) String() string {
64 	switch qt {
65 	case QTDIR:
66 		return "dir"
67 	case QTAPPEND:
68 		return "append"
69 	case QTEXCL:
70 		return "excl"
71 	case QTMOUNT:
72 		return "mount"
73 	case QTAUTH:
74 		return "auth"
75 	case QTTMP:
76 		return "tmp"
77 	case QTFILE:
78 		return "file"
79 	}
80 
81 	return "unknown"
82 }
83 
84 type Fid uint32
85 
86 type Qid struct {
87 	Type    QType `9p:type,1`
88 	Version uint32
89 	Path    uint64
90 }
91 
92 func (qid Qid) String() string {
93 	return fmt.Sprintf("qid(%v, v=%x, p=%x)",
94 		qid.Type, qid.Version, qid.Path)
95 }
96 
97 type Dir struct {
98 	Type uint16
99 	Dev  uint32
100 	Qid  Qid
101 	Mode uint32
102 
103 	// BUG(stevvooe): The Year 2038 is coming soon. 9p wire protocol has these
104 	// as 4 byte epoch times. Some possibilities include time dilation fields
105 	// or atemporal files. We can also just not use them and set them to zero.
106 
107 	AccessTime time.Time
108 	ModTime    time.Time
109 
110 	Length uint64
111 	Name   string
112 	UID    string
113 	GID    string
114 	MUID   string
115 }
116 
117 func (d Dir) String() string {
118 	return fmt.Sprintf("dir(%v mode=%v atime=%v mtime=%v length=%v name=%v uid=%v gid=%v muid=%v)",
119 		d.Qid, d.Mode, d.AccessTime, d.ModTime, d.Length, d.Name, d.UID, d.GID, d.MUID)
120 }
121 
122 //
123 type Tag uint16