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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
#include <qapplication.h>
#include <qfile.h>
#include <qfileinfo.h>
#include <qdir.h>
#include <qtextstream.h>
#include <qstringlist.h>
#include <stdlib.h>
#include <unistd.h> //symlink()
#include <sys/stat.h> // mkdir()
#include <sys/vfs.h>
#include <mntent.h>
#include <errno.h>
static const char *listDir = "/usr/lib/ipkg/externinfo/";
static void createSymlinks( const QString &location, const QString &package )
{
QFile inFile( location + "/usr/lib/ipkg/info/" + package + ".list" );
mkdir( "/usr/lib/ipkg", 0777 );
mkdir( listDir, 0777 );
QFile outFile( listDir + package + ".list");
// qDebug( "createSymlinks %s -> %s", inFile.name().ascii(), outFile.name().ascii() );
if ( inFile.open(IO_ReadOnly) && outFile.open(IO_WriteOnly)) {
QTextStream in(&inFile);
QTextStream out(&outFile);
QString s;
while ( !in.eof() ) { // until end of file...
s = in.readLine(); // line of text excluding '\n'
// qDebug( "Read: %s", s.ascii() );
if (s.find(location,0,true) >= 0){
// qDebug( "Found!" );
s = s.replace(location,"");
}
// qDebug( "Read after: %s", s.ascii() );
// for s, do link/mkdir.
if ( s.right(1) == "/" ) {
// qDebug("do mkdir for %s", s.ascii());
mkdir( s.ascii(), 0777 );
//possible optimization: symlink directories
//that don't exist already. -- Risky.
} else {
// qDebug("do symlink for %s", s.ascii());
QFileInfo ffi( s );
//Don't try to symlink if a regular file exists already
if ( !ffi.exists() || ffi.isSymLink() ) {
if (symlink( (location+s).ascii(), s.ascii() ) != 0){
if (errno == ENOENT){
// perror("Symlink Failed! ");
QString e=s.ascii();
e = e.replace(ffi.fileName(),"");
// qDebug("DirName : %s",e.ascii() );
system ( QString("mkdir -p ")+e.ascii() );
if (symlink( (location+s).ascii(), s.ascii() ) != 0)
qDebug ("Big problem creating symlink and directory");
}
}
// qDebug ( "Created %s" ,s.ascii() );
out << s << "\n";
} else {
qDebug( "%s exists already, not symlinked", s.ascii() );
}
}
}
inFile.close();
outFile.close();
}
}
static void removeSymlinks( const QString &package )
{
QFile inFile( listDir + package + ".list" );
if ( inFile.open(IO_ReadOnly) ) {
QTextStream in(&inFile);
QString s;
while ( !in.eof() ) { // until end of file...
s = in.readLine(); // line of text excluding '\n'
// qDebug("remove symlink %s", s.ascii());
QFileInfo ffi( s );
//Confirm that it's still a symlink.
if ( ffi.isSymLink() ){
unlink( s.ascii() );
// qDebug ( "Removed %s", s.ascii() );}
// else
// qDebug( "Not removed %s", s.ascii() );
}
}
inFile.close();
inFile.remove();
}
}
/*
Slightly hacky: we can't use StorageInfo, since we don't have a
QApplication. We look for filesystems that have the directory
/usr/lib/ipkg/info, and assume that they are removable media
with packages installed. This is safe even if eg. /usr is on a
separate filesystem, since then we would be testing for
/usr/usr/lib/ipkg/info, which should not exist. (And if it
does they deserve to have it treated as removable.)
*/
static void updateSymlinks()
{
QDir lists( listDir );
QStringList knownPackages = lists.entryList( "*.list" ); // No tr
struct mntent *me;
FILE *mntfp = setmntent( "/etc/mtab", "r" );
if ( mntfp ) {
while ( (me = getmntent( mntfp )) != 0 ) {
QString root = me->mnt_dir;
if ( root == "/" )
continue;
QString info = root + "/usr/lib/ipkg/info";
QDir infoDir( info );
// qDebug( "looking at %s", info.ascii() );
if ( infoDir.isReadable() ) {
const QFileInfoList *packages = infoDir.entryInfoList( "*.list" ); // No tr
QFileInfoListIterator it( *packages );
QFileInfo *fi;
while (( fi = *it )) {
++it;
if ( knownPackages.contains( fi->fileName() ) ) {
// qDebug( "found %s and we've seen it before", fi->fileName().latin1() );
knownPackages.remove( fi->fileName() );
} else {
//it's a new one
createSymlinks( root, fi->baseName() );
}
}
}
}
endmntent( mntfp );
}
for ( QStringList::Iterator it = knownPackages.begin();
it != knownPackages.end(); ++it ) {
// strip ".info" off the end.
removeSymlinks( (*it).left((*it).length()-5) );
}
}
int main( int argc, char *argv[] )
{
QApplication a( argc, argv, QApplication::Tty );
QString command = argc > 1 ? argv[1] : "update"; // No tr
if ( command == "update" ) // No tr
updateSymlinks();
else if ( command == "create" && argc > 3 ) // No tr
createSymlinks( argv[2], argv[3] );
else if ( command == "remove" && argc > 2 ) // No tr
removeSymlinks( argv[2] );
else
qWarning( "Argument error" );
}
|
