-
Notifications
You must be signed in to change notification settings - Fork 12
/
nfs-common.cl
146 lines (127 loc) · 5.01 KB
/
nfs-common.cl
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
;; -*- mode: common-lisp -*-
;; See the file LICENSE for the full license governing this code.
(in-package :user)
(eval-when (compile load eval)
(require :osi)
(use-package :excl.osi)
(use-package :gen-nfs))
;; NOTE: the form of the version *must* be a.b.c. If you're starting
;; a new release, say 6.0, then use 6.0.0. For betas, use
;; something like 6.2.0-beta3.
(defvar *nfsd-version* "7.1.0")
(defvar *nfsd-long-version*
(format nil "~a (NFSv2/NFSv3)" *nfsd-version*))
(load (merge-pathnames "commit-id.cl" *load-pathname*))
;; max (65535), minus 8 bytes for UDP header, minus 20 bytes for IPv4 header.
;; XREF: https://en.wikipedia.org/wiki/User_Datagram_Protocol#Packet_structure
(defconstant *max-udp-datagram-size* (- 65535 8 20)) ;; = 65507
;; Filesystem allocation unit size. Only used by statfs procedure.
;; See discussion in spr39245 for why this was changed from 8192.
(defconstant *blocksize* 512)
(defconstant *nfs-debug-read* #x00000001)
(defconstant *nfs-debug-write* #x00000002)
(defconstant *nfs-debug-readdir* #x00000004) ;; includes readdirplus
(defconstant *nfs-debug-getattr* #x00000008)
(defconstant *nfs-debug-setattr* #x00000010)
(defconstant *nfs-debug-lookup* #x00000020)
(defconstant *nfs-debug-access* #x00000040)
(defconstant *nfs-debug-create* #x00000080)
(defconstant *nfs-debug-mkdir* #x00000100)
(defconstant *nfs-debug-rmdir* #x00000200)
(defconstant *nfs-debug-remove* #x00000400)
(defconstant *nfs-debug-rename* #x00000800)
(defconstant *nfs-debug-fsstat* #x00001000)
(defconstant *nfs-debug-fsinfo* #x00002000)
(defconstant *nfs-debug-pathconf* #x00004000)
(defconstant *nfs-debug-commit* #x00008000)
(defconstant *nfs-debug-null* #x00010000)
(defconstant *nfs-debug-statfs* #x00020000)
(defconstant *nfs-debug-link* #x00040000)
(defconstant *nfs-debug-symlink* #x00080000)
(defconstant *nfs-debug-readlink* #x00100000)
(defconstant *nfs-debug-mknod* #x00200000)
(defmacro nfs-debug-filter-on (type)
(if (eq type 'readdirplus)
(setf type 'readdir))
(let ((constant (intern (format nil "*nfs-debug-~a*" type))))
`(and *nfs-debug* (/= 0 (logand *nfs-debug-filter* ,constant)))))
(defun map-errno-to-nfs-error-code (errno)
(case errno
(#.*enoent* *nfserr-noent*)
(#.*eio* *nfserr-io*)
(#.*eacces* *nfserr-acces*)
(#.*enfile* *nfserr-acces*)
(#.*enotempty* *nfserr-notempty*)
(#.*eexist* *nfserr-exist*)
(#.*einval* *nfserr-inval*)
(#.*enospc* *nfserr-nospc*)
;; very general... avoid. For v3, should should be
;; *nfserr-serverfault*
(t *nfserr-io*)))
;; Needed for proper error reporting.
(eval-when (compile load eval)
(setf excl::*strict-probe-file* t))
(defun roundup (value multiple)
(let ((mod (mod value multiple)))
(+ value (if (> mod 0) (- multiple mod) 0))))
;;; return how many blocks are required to contain 'value' items
;;; given a particular blocksize
(defun howmany (value blocksize)
(/ (roundup value blocksize) blocksize))
(define-compiler-macro howmany (value blocksize &whole whole &environment env)
(flet ((power-of-two-p (value)
(zerop (nth-value 1 (truncate (log value 2))))))
(let ((cv
(and (constantp blocksize env) (sys:constant-value blocksize env))))
(if* (and cv (power-of-two-p cv))
then (setf blocksize cv)
(let ((v (gensym)))
`(let ((,v ,value))
(if* (fixnump ,v)
then (let ()
(declare (fixnum ,v))
(ash (logand (+ ,v ,(1- blocksize))
(lognot ,(1- blocksize)))
,(- (truncate (log blocksize 2)))))
else (ash (logand (+ ,v ,(1- blocksize))
(lognot ,(1- blocksize)))
,(- (truncate (log blocksize 2)))))))
else whole))))
;; debugmain sets this to nil
(defparameter *exit-on-bailout* t)
(defmacro bailout (format &rest format-args)
(let ((complaint (gensym "complaint")))
`(let ((,complaint (format nil ,format ,@format-args)))
(logit-stamp "~a" ,complaint)
(console-control :close t :show t)
(if* *exit-on-bailout*
then (exit 1)
else (error "~a" ,complaint)))))
(ff:def-foreign-call MoveFileExA ((from (* :char))
(to (* :char))
(flags :int))
:strings-convert t
:returning :boolean
:error-value :os-specific)
(ff:def-foreign-call MoveFileExW ((from (* :void))
(to (* :void))
(flags :int))
:strings-convert nil
:returning :boolean
:error-value :os-specific)
(defconstant MOVEFILE_REPLACE_EXISTING 1)
;; This function will accept pathnames but it will not translate
;; logical pathnames. The caller is responsible for that.
(defun my-rename (from to &key unicode)
(if (pathnamep from)
(setf from (namestring from)))
(if (pathnamep to)
(setf to (namestring to)))
(multiple-value-bind (success winerr)
(if* unicode
then (MoveFileExW from to MOVEFILE_REPLACE_EXISTING)
else (MoveFileExA from to MOVEFILE_REPLACE_EXISTING))
(if* success
then t
else (excl.osi:perror (excl.osi::win_err_to_errno winerr)
"rename failed"))))