author | Mikael Berthe <mikael@lilotux.net> |
Tue, 23 Aug 2022 22:39:43 +0200 | |
changeset 260 | 445e01aede7e |
parent 242 | 2a9ec03fe5a1 |
permissions | -rw-r--r-- |
242
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1 |
// Copyright 2010 The Go Authors. All rights reserved. |
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2 |
// Use of this source code is governed by a BSD-style |
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3 |
// license that can be found in the LICENSE file. |
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260 | 5 |
//go:build freebsd || openbsd || netbsd || dragonfly || darwin |
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6 |
// +build freebsd openbsd netbsd dragonfly darwin |
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7 |
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8 |
package fsnotify |
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9 |
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10 |
import ( |
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"errors" |
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12 |
"fmt" |
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"io/ioutil" |
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14 |
"os" |
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15 |
"path/filepath" |
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"sync" |
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17 |
"time" |
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18 |
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19 |
"golang.org/x/sys/unix" |
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20 |
) |
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21 |
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// Watcher watches a set of files, delivering events to a channel. |
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23 |
type Watcher struct { |
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24 |
Events chan Event |
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25 |
Errors chan error |
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26 |
done chan struct{} // Channel for sending a "quit message" to the reader goroutine |
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27 |
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kq int // File descriptor (as returned by the kqueue() syscall). |
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29 |
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mu sync.Mutex // Protects access to watcher data |
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watches map[string]int // Map of watched file descriptors (key: path). |
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externalWatches map[string]bool // Map of watches added by user of the library. |
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dirFlags map[string]uint32 // Map of watched directories to fflags used in kqueue. |
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paths map[int]pathInfo // Map file descriptors to path names for processing kqueue events. |
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fileExists map[string]bool // Keep track of if we know this file exists (to stop duplicate create events). |
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36 |
isClosed bool // Set to true when Close() is first called |
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37 |
} |
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38 |
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39 |
type pathInfo struct { |
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40 |
name string |
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41 |
isDir bool |
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42 |
} |
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43 |
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// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events. |
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func NewWatcher() (*Watcher, error) { |
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kq, err := kqueue() |
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47 |
if err != nil { |
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48 |
return nil, err |
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49 |
} |
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50 |
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51 |
w := &Watcher{ |
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52 |
kq: kq, |
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53 |
watches: make(map[string]int), |
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dirFlags: make(map[string]uint32), |
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paths: make(map[int]pathInfo), |
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fileExists: make(map[string]bool), |
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externalWatches: make(map[string]bool), |
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58 |
Events: make(chan Event), |
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59 |
Errors: make(chan error), |
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done: make(chan struct{}), |
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61 |
} |
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62 |
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63 |
go w.readEvents() |
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64 |
return w, nil |
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65 |
} |
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66 |
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67 |
// Close removes all watches and closes the events channel. |
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68 |
func (w *Watcher) Close() error { |
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69 |
w.mu.Lock() |
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70 |
if w.isClosed { |
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71 |
w.mu.Unlock() |
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72 |
return nil |
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73 |
} |
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74 |
w.isClosed = true |
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75 |
|
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76 |
// copy paths to remove while locked |
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77 |
var pathsToRemove = make([]string, 0, len(w.watches)) |
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78 |
for name := range w.watches { |
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79 |
pathsToRemove = append(pathsToRemove, name) |
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80 |
} |
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81 |
w.mu.Unlock() |
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82 |
// unlock before calling Remove, which also locks |
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83 |
|
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84 |
for _, name := range pathsToRemove { |
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85 |
w.Remove(name) |
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86 |
} |
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87 |
|
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88 |
// send a "quit" message to the reader goroutine |
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89 |
close(w.done) |
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90 |
|
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91 |
return nil |
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92 |
} |
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93 |
|
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94 |
// Add starts watching the named file or directory (non-recursively). |
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95 |
func (w *Watcher) Add(name string) error { |
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96 |
w.mu.Lock() |
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97 |
w.externalWatches[name] = true |
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98 |
w.mu.Unlock() |
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99 |
_, err := w.addWatch(name, noteAllEvents) |
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100 |
return err |
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101 |
} |
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102 |
|
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103 |
// Remove stops watching the the named file or directory (non-recursively). |
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104 |
func (w *Watcher) Remove(name string) error { |
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105 |
name = filepath.Clean(name) |
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106 |
w.mu.Lock() |
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107 |
watchfd, ok := w.watches[name] |
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108 |
w.mu.Unlock() |
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109 |
if !ok { |
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110 |
return fmt.Errorf("can't remove non-existent kevent watch for: %s", name) |
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111 |
} |
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112 |
|
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113 |
const registerRemove = unix.EV_DELETE |
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114 |
if err := register(w.kq, []int{watchfd}, registerRemove, 0); err != nil { |
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115 |
return err |
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116 |
} |
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117 |
|
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118 |
unix.Close(watchfd) |
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119 |
|
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120 |
w.mu.Lock() |
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121 |
isDir := w.paths[watchfd].isDir |
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122 |
delete(w.watches, name) |
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123 |
delete(w.paths, watchfd) |
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124 |
delete(w.dirFlags, name) |
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125 |
w.mu.Unlock() |
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|
126 |
|
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|
127 |
// Find all watched paths that are in this directory that are not external. |
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|
128 |
if isDir { |
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|
129 |
var pathsToRemove []string |
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|
130 |
w.mu.Lock() |
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|
131 |
for _, path := range w.paths { |
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|
132 |
wdir, _ := filepath.Split(path.name) |
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|
133 |
if filepath.Clean(wdir) == name { |
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|
134 |
if !w.externalWatches[path.name] { |
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|
135 |
pathsToRemove = append(pathsToRemove, path.name) |
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|
136 |
} |
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|
137 |
} |
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|
138 |
} |
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|
139 |
w.mu.Unlock() |
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diff
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|
140 |
for _, name := range pathsToRemove { |
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|
141 |
// Since these are internal, not much sense in propagating error |
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|
142 |
// to the user, as that will just confuse them with an error about |
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|
143 |
// a path they did not explicitly watch themselves. |
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|
144 |
w.Remove(name) |
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|
145 |
} |
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|
146 |
} |
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|
147 |
|
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|
148 |
return nil |
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|
149 |
} |
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150 |
|
260 | 151 |
// WatchList returns the directories and files that are being monitered. |
152 |
func (w *Watcher) WatchList() []string { |
|
153 |
w.mu.Lock() |
|
154 |
defer w.mu.Unlock() |
|
155 |
||
156 |
entries := make([]string, 0, len(w.watches)) |
|
157 |
for pathname := range w.watches { |
|
158 |
entries = append(entries, pathname) |
|
159 |
} |
|
160 |
||
161 |
return entries |
|
162 |
} |
|
163 |
||
242
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|
164 |
// Watch all events (except NOTE_EXTEND, NOTE_LINK, NOTE_REVOKE) |
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|
165 |
const noteAllEvents = unix.NOTE_DELETE | unix.NOTE_WRITE | unix.NOTE_ATTRIB | unix.NOTE_RENAME |
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166 |
|
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|
167 |
// keventWaitTime to block on each read from kevent |
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|
168 |
var keventWaitTime = durationToTimespec(100 * time.Millisecond) |
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|
169 |
|
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|
170 |
// addWatch adds name to the watched file set. |
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|
171 |
// The flags are interpreted as described in kevent(2). |
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|
172 |
// Returns the real path to the file which was added, if any, which may be different from the one passed in the case of symlinks. |
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|
173 |
func (w *Watcher) addWatch(name string, flags uint32) (string, error) { |
2a9ec03fe5a1
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|
174 |
var isDir bool |
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|
175 |
// Make ./name and name equivalent |
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|
176 |
name = filepath.Clean(name) |
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|
177 |
|
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|
178 |
w.mu.Lock() |
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parents:
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changeset
|
179 |
if w.isClosed { |
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|
180 |
w.mu.Unlock() |
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parents:
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changeset
|
181 |
return "", errors.New("kevent instance already closed") |
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parents:
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|
182 |
} |
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parents:
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changeset
|
183 |
watchfd, alreadyWatching := w.watches[name] |
2a9ec03fe5a1
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parents:
diff
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|
184 |
// We already have a watch, but we can still override flags. |
2a9ec03fe5a1
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parents:
diff
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|
185 |
if alreadyWatching { |
2a9ec03fe5a1
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parents:
diff
changeset
|
186 |
isDir = w.paths[watchfd].isDir |
2a9ec03fe5a1
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parents:
diff
changeset
|
187 |
} |
2a9ec03fe5a1
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parents:
diff
changeset
|
188 |
w.mu.Unlock() |
2a9ec03fe5a1
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parents:
diff
changeset
|
189 |
|
2a9ec03fe5a1
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changeset
|
190 |
if !alreadyWatching { |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
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changeset
|
191 |
fi, err := os.Lstat(name) |
2a9ec03fe5a1
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parents:
diff
changeset
|
192 |
if err != nil { |
2a9ec03fe5a1
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parents:
diff
changeset
|
193 |
return "", err |
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parents:
diff
changeset
|
194 |
} |
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changeset
|
195 |
|
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parents:
diff
changeset
|
196 |
// Don't watch sockets. |
2a9ec03fe5a1
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parents:
diff
changeset
|
197 |
if fi.Mode()&os.ModeSocket == os.ModeSocket { |
2a9ec03fe5a1
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parents:
diff
changeset
|
198 |
return "", nil |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
199 |
} |
2a9ec03fe5a1
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parents:
diff
changeset
|
200 |
|
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parents:
diff
changeset
|
201 |
// Don't watch named pipes. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
202 |
if fi.Mode()&os.ModeNamedPipe == os.ModeNamedPipe { |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
203 |
return "", nil |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
204 |
} |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
205 |
|
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
206 |
// Follow Symlinks |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
207 |
// Unfortunately, Linux can add bogus symlinks to watch list without |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
208 |
// issue, and Windows can't do symlinks period (AFAIK). To maintain |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
209 |
// consistency, we will act like everything is fine. There will simply |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
210 |
// be no file events for broken symlinks. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
211 |
// Hence the returns of nil on errors. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
212 |
if fi.Mode()&os.ModeSymlink == os.ModeSymlink { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
213 |
name, err = filepath.EvalSymlinks(name) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
214 |
if err != nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
215 |
return "", nil |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
216 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
217 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
218 |
w.mu.Lock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
219 |
_, alreadyWatching = w.watches[name] |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
220 |
w.mu.Unlock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
221 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
222 |
if alreadyWatching { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
223 |
return name, nil |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
224 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
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parents:
diff
changeset
|
225 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
226 |
fi, err = os.Lstat(name) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
227 |
if err != nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
228 |
return "", nil |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
229 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
230 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
231 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
232 |
watchfd, err = unix.Open(name, openMode, 0700) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
233 |
if watchfd == -1 { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
234 |
return "", err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
235 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
236 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
237 |
isDir = fi.IsDir() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
238 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
239 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
240 |
const registerAdd = unix.EV_ADD | unix.EV_CLEAR | unix.EV_ENABLE |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
241 |
if err := register(w.kq, []int{watchfd}, registerAdd, flags); err != nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
242 |
unix.Close(watchfd) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
243 |
return "", err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
244 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
245 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
246 |
if !alreadyWatching { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
247 |
w.mu.Lock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
248 |
w.watches[name] = watchfd |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
249 |
w.paths[watchfd] = pathInfo{name: name, isDir: isDir} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
250 |
w.mu.Unlock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
251 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
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parents:
diff
changeset
|
252 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
253 |
if isDir { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
254 |
// Watch the directory if it has not been watched before, |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
255 |
// or if it was watched before, but perhaps only a NOTE_DELETE (watchDirectoryFiles) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
256 |
w.mu.Lock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
257 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
258 |
watchDir := (flags&unix.NOTE_WRITE) == unix.NOTE_WRITE && |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
259 |
(!alreadyWatching || (w.dirFlags[name]&unix.NOTE_WRITE) != unix.NOTE_WRITE) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
260 |
// Store flags so this watch can be updated later |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
261 |
w.dirFlags[name] = flags |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
262 |
w.mu.Unlock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
263 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
264 |
if watchDir { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
265 |
if err := w.watchDirectoryFiles(name); err != nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
266 |
return "", err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
267 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
268 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
269 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
270 |
return name, nil |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
271 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
272 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
273 |
// readEvents reads from kqueue and converts the received kevents into |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
274 |
// Event values that it sends down the Events channel. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
275 |
func (w *Watcher) readEvents() { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
276 |
eventBuffer := make([]unix.Kevent_t, 10) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
277 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
278 |
loop: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
279 |
for { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
280 |
// See if there is a message on the "done" channel |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
281 |
select { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
282 |
case <-w.done: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
283 |
break loop |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
284 |
default: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
285 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
286 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
287 |
// Get new events |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
288 |
kevents, err := read(w.kq, eventBuffer, &keventWaitTime) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
289 |
// EINTR is okay, the syscall was interrupted before timeout expired. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
290 |
if err != nil && err != unix.EINTR { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
291 |
select { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
292 |
case w.Errors <- err: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
293 |
case <-w.done: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
294 |
break loop |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
295 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
296 |
continue |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
297 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
298 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
299 |
// Flush the events we received to the Events channel |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
300 |
for len(kevents) > 0 { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
301 |
kevent := &kevents[0] |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
302 |
watchfd := int(kevent.Ident) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
303 |
mask := uint32(kevent.Fflags) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
304 |
w.mu.Lock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
305 |
path := w.paths[watchfd] |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
306 |
w.mu.Unlock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
307 |
event := newEvent(path.name, mask) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
308 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
309 |
if path.isDir && !(event.Op&Remove == Remove) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
310 |
// Double check to make sure the directory exists. This can happen when |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
311 |
// we do a rm -fr on a recursively watched folders and we receive a |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
312 |
// modification event first but the folder has been deleted and later |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
313 |
// receive the delete event |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
314 |
if _, err := os.Lstat(event.Name); os.IsNotExist(err) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
315 |
// mark is as delete event |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
316 |
event.Op |= Remove |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
317 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
318 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
319 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
320 |
if event.Op&Rename == Rename || event.Op&Remove == Remove { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
321 |
w.Remove(event.Name) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
322 |
w.mu.Lock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
323 |
delete(w.fileExists, event.Name) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
324 |
w.mu.Unlock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
325 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
326 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
327 |
if path.isDir && event.Op&Write == Write && !(event.Op&Remove == Remove) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
328 |
w.sendDirectoryChangeEvents(event.Name) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
329 |
} else { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
330 |
// Send the event on the Events channel. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
331 |
select { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
332 |
case w.Events <- event: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
333 |
case <-w.done: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
334 |
break loop |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
335 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
336 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
337 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
338 |
if event.Op&Remove == Remove { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
339 |
// Look for a file that may have overwritten this. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
340 |
// For example, mv f1 f2 will delete f2, then create f2. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
341 |
if path.isDir { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
342 |
fileDir := filepath.Clean(event.Name) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
343 |
w.mu.Lock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
344 |
_, found := w.watches[fileDir] |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
345 |
w.mu.Unlock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
346 |
if found { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
347 |
// make sure the directory exists before we watch for changes. When we |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
348 |
// do a recursive watch and perform rm -fr, the parent directory might |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
349 |
// have gone missing, ignore the missing directory and let the |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
350 |
// upcoming delete event remove the watch from the parent directory. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
351 |
if _, err := os.Lstat(fileDir); err == nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
352 |
w.sendDirectoryChangeEvents(fileDir) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
353 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
354 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
355 |
} else { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
356 |
filePath := filepath.Clean(event.Name) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
357 |
if fileInfo, err := os.Lstat(filePath); err == nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
358 |
w.sendFileCreatedEventIfNew(filePath, fileInfo) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
359 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
360 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
361 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
362 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
363 |
// Move to next event |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
364 |
kevents = kevents[1:] |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
365 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
366 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
367 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
368 |
// cleanup |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
369 |
err := unix.Close(w.kq) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
370 |
if err != nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
371 |
// only way the previous loop breaks is if w.done was closed so we need to async send to w.Errors. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
372 |
select { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
373 |
case w.Errors <- err: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
374 |
default: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
375 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
376 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
377 |
close(w.Events) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
378 |
close(w.Errors) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
379 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
380 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
381 |
// newEvent returns an platform-independent Event based on kqueue Fflags. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
382 |
func newEvent(name string, mask uint32) Event { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
383 |
e := Event{Name: name} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
384 |
if mask&unix.NOTE_DELETE == unix.NOTE_DELETE { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
385 |
e.Op |= Remove |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
386 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
387 |
if mask&unix.NOTE_WRITE == unix.NOTE_WRITE { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
388 |
e.Op |= Write |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
389 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
390 |
if mask&unix.NOTE_RENAME == unix.NOTE_RENAME { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
391 |
e.Op |= Rename |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
392 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
393 |
if mask&unix.NOTE_ATTRIB == unix.NOTE_ATTRIB { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
394 |
e.Op |= Chmod |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
395 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
396 |
return e |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
397 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
398 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
399 |
func newCreateEvent(name string) Event { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
400 |
return Event{Name: name, Op: Create} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
401 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
402 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
403 |
// watchDirectoryFiles to mimic inotify when adding a watch on a directory |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
404 |
func (w *Watcher) watchDirectoryFiles(dirPath string) error { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
405 |
// Get all files |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
406 |
files, err := ioutil.ReadDir(dirPath) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
407 |
if err != nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
408 |
return err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
409 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
410 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
411 |
for _, fileInfo := range files { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
412 |
filePath := filepath.Join(dirPath, fileInfo.Name()) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
413 |
filePath, err = w.internalWatch(filePath, fileInfo) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
414 |
if err != nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
415 |
return err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
416 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
417 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
418 |
w.mu.Lock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
419 |
w.fileExists[filePath] = true |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
420 |
w.mu.Unlock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
421 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
422 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
423 |
return nil |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
424 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
425 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
426 |
// sendDirectoryEvents searches the directory for newly created files |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
427 |
// and sends them over the event channel. This functionality is to have |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
428 |
// the BSD version of fsnotify match Linux inotify which provides a |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
429 |
// create event for files created in a watched directory. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
430 |
func (w *Watcher) sendDirectoryChangeEvents(dirPath string) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
431 |
// Get all files |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
432 |
files, err := ioutil.ReadDir(dirPath) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
433 |
if err != nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
434 |
select { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
435 |
case w.Errors <- err: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
436 |
case <-w.done: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
437 |
return |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
438 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
439 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
440 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
441 |
// Search for new files |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
442 |
for _, fileInfo := range files { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
443 |
filePath := filepath.Join(dirPath, fileInfo.Name()) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
444 |
err := w.sendFileCreatedEventIfNew(filePath, fileInfo) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
445 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
446 |
if err != nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
447 |
return |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
448 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
449 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
450 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
451 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
452 |
// sendFileCreatedEvent sends a create event if the file isn't already being tracked. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
453 |
func (w *Watcher) sendFileCreatedEventIfNew(filePath string, fileInfo os.FileInfo) (err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
454 |
w.mu.Lock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
455 |
_, doesExist := w.fileExists[filePath] |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
456 |
w.mu.Unlock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
457 |
if !doesExist { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
458 |
// Send create event |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
459 |
select { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
460 |
case w.Events <- newCreateEvent(filePath): |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
461 |
case <-w.done: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
462 |
return |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
463 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
464 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
465 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
466 |
// like watchDirectoryFiles (but without doing another ReadDir) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
467 |
filePath, err = w.internalWatch(filePath, fileInfo) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
468 |
if err != nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
469 |
return err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
470 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
471 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
472 |
w.mu.Lock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
473 |
w.fileExists[filePath] = true |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
474 |
w.mu.Unlock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
475 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
476 |
return nil |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
477 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
478 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
479 |
func (w *Watcher) internalWatch(name string, fileInfo os.FileInfo) (string, error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
480 |
if fileInfo.IsDir() { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
481 |
// mimic Linux providing delete events for subdirectories |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
482 |
// but preserve the flags used if currently watching subdirectory |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
483 |
w.mu.Lock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
484 |
flags := w.dirFlags[name] |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
485 |
w.mu.Unlock() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
486 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
487 |
flags |= unix.NOTE_DELETE | unix.NOTE_RENAME |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
488 |
return w.addWatch(name, flags) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
489 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
490 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
491 |
// watch file to mimic Linux inotify |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
492 |
return w.addWatch(name, noteAllEvents) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
493 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
494 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
495 |
// kqueue creates a new kernel event queue and returns a descriptor. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
496 |
func kqueue() (kq int, err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
497 |
kq, err = unix.Kqueue() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
498 |
if kq == -1 { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
499 |
return kq, err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
500 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
501 |
return kq, nil |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
502 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
503 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
504 |
// register events with the queue |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
505 |
func register(kq int, fds []int, flags int, fflags uint32) error { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
506 |
changes := make([]unix.Kevent_t, len(fds)) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
507 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
508 |
for i, fd := range fds { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
509 |
// SetKevent converts int to the platform-specific types: |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
510 |
unix.SetKevent(&changes[i], fd, unix.EVFILT_VNODE, flags) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
511 |
changes[i].Fflags = fflags |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
512 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
513 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
514 |
// register the events |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
515 |
success, err := unix.Kevent(kq, changes, nil, nil) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
516 |
if success == -1 { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
517 |
return err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
518 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
519 |
return nil |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
520 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
521 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
522 |
// read retrieves pending events, or waits until an event occurs. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
523 |
// A timeout of nil blocks indefinitely, while 0 polls the queue. |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
524 |
func read(kq int, events []unix.Kevent_t, timeout *unix.Timespec) ([]unix.Kevent_t, error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
525 |
n, err := unix.Kevent(kq, nil, events, timeout) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
526 |
if err != nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
527 |
return nil, err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
528 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
529 |
return events[0:n], nil |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
530 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
531 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
532 |
// durationToTimespec prepares a timeout value |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
533 |
func durationToTimespec(d time.Duration) unix.Timespec { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
534 |
return unix.NsecToTimespec(d.Nanoseconds()) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
535 |
} |