5 local $SIG{'__WARN__'} = \&Carp::cluck;
10 require threads::shared;
15 threads::shared->import();
18 my $has_Filesys__Statvfs = 0;
20 require Filesys::Statvfs;
23 $has_Filesys__Statvfs = 1;
24 Filesys::Statvfs->import();
30 use POSIX qw(ENOENT ENOSYS EEXIST EPERM O_RDONLY O_RDWR O_APPEND O_CREAT);
31 use Fcntl qw(S_ISBLK S_ISCHR S_ISFIFO SEEK_SET S_ISREG S_ISFIFO S_IMODE);
34 my %extraopts = ( 'threaded' => 0, 'debug' => 0 );
35 my($use_real_statfs, $pidfile);
37 'use-threads' => sub {
39 $extraopts{'threaded'} = 1;
43 $extraopts{'debug'} = 1;
45 'use-real-statfs' => \$use_real_statfs,
46 'pidfile=s' => \$pidfile,
47 ) || die('Error parsing options');
49 my $can_syscall = eval {
50 require 'sys/syscall.ph'; # for SYS_mknod and SYS_lchown
52 if (!$can_syscall && open my $fh, '<', '/usr/include/sys/syscall.h') {
53 my %sys = do { local $/ = undef;
54 <$fh> =~ m/\#define \s+ (\w+) \s+ (\d+)/gxms;
57 if ($sys{SYS_mknod} && $sys{SYS_lchown}) {
58 *SYS_mknod = sub { $sys{SYS_mknod} };
59 *SYS_lchown = sub { $sys{SYS_lchown} };
64 sub fixup { return "/tmp/fusetest-" . $ENV{LOGNAME} . shift }
67 my ($file) = fixup(shift);
68 my (@list) = lstat($file);
69 return -$! unless @list;
74 my ($dirname) = fixup(shift);
75 unless(opendir(DIRHANDLE,$dirname)) {
78 my (@files) = readdir(DIRHANDLE);
84 my ($file) = fixup(shift);
86 return -$! unless sysopen(FILE,$file,$mode);
92 my ($file,$bufsize,$off) = @_;
94 my ($handle) = new IO::File;
95 return -ENOENT() unless -e ($file = fixup($file));
96 my ($fsize) = -s $file;
97 return -ENOSYS() unless open($handle,$file);
98 if(seek($handle,$off,SEEK_SET)) {
99 read($handle,$rv,$bufsize);
105 my ($file,$buf,$off) = @_;
107 return -ENOENT() unless -e ($file = fixup($file));
108 my ($fsize) = -s $file;
109 return -ENOSYS() unless open(FILE,'+<',$file);
110 if($rv = seek(FILE,$off,SEEK_SET)) {
111 $rv = print(FILE $buf);
113 $rv = -ENOSYS() unless $rv;
118 sub err { return (-shift || -$!) }
120 sub x_readlink { return readlink(fixup(shift)); }
121 sub x_unlink { return unlink(fixup(shift)) ? 0 : -$!; }
123 sub x_symlink { print "symlink\n"; return symlink(shift,fixup(shift)) ? 0 : -$!; }
126 my ($old) = fixup(shift);
127 my ($new) = fixup(shift);
128 my ($err) = rename($old,$new) ? 0 : -ENOENT();
131 sub x_link { return link(fixup(shift),fixup(shift)) ? 0 : -$! }
133 return -ENOSYS() if ! $can_syscall;
134 my ($fn) = fixup(shift);
135 print "nonexistent $fn\n" unless -e $fn;
137 # perl's chown() does not chown symlinks, it chowns the symlink's
138 # target. it fails when the link's target doesn't exist, because
139 # the stat64() syscall fails.
140 # this causes error messages when unpacking symlinks in tarballs.
141 my ($err) = syscall(&SYS_lchown,$fn,$uid,$gid,$fn) ? -$! : 0;
145 my ($fn) = fixup(shift);
147 my ($err) = chmod($mode,$fn) ? 0 : -$!;
150 sub x_truncate { return truncate(fixup(shift),shift) ? 0 : -$! ; }
151 sub x_utime { return utime($_[1],$_[2],fixup($_[0])) ? 0:-$!; }
153 sub x_mkdir { my ($name, $perm) = @_; return 0 if mkdir(fixup($name),$perm); return -$!; }
154 sub x_rmdir { return 0 if rmdir fixup(shift); return -$!; }
157 return -ENOSYS() if ! $can_syscall;
158 # since this is called for ALL files, not just devices, I'll do some checks
159 # and possibly run the real mknod command.
160 my ($file, $modes, $dev) = @_;
161 $file = fixup($file);
163 if ($^O eq 'freebsd' || $^O eq 'darwin' || $^O eq 'netbsd') {
164 if (S_ISREG($modes)) {
165 open(FILE, '>', $file) || return -$!;
169 } elsif (S_ISFIFO($modes)) {
170 my ($rv) = POSIX::mkfifo($file, S_IMODE($modes));
171 return $rv ? 0 : -POSIX::errno();
174 syscall(&SYS_mknod,$file,$modes,$dev);
180 if ($has_Filesys__Statvfs && $use_real_statfs) {
181 (my($bsize, $frsize, $blocks, $bfree, $bavail,
182 $files, $ffree, $favail, $flag,
183 $namemax) = statvfs('/tmp')) || return -$!;
184 return ($namemax, $files, $ffree, $blocks, $bavail, $bsize);
186 return 255,1000000,500000,1000000,500000,4096;
188 my ($mountpoint) = '';
189 $mountpoint = shift(@ARGV) if @ARGV;
191 if (! -d $mountpoint) {
192 print STDERR "ERROR: attempted to mount to non-directory\n";
196 die("fork() failed: $!") unless defined $pid;
203 open(PIDFILE, '>', $pidfile);
204 print PIDFILE $$, "\n";
208 'mountpoint' => $mountpoint,
209 'getattr' => 'main::x_getattr',
210 'readlink' => 'main::x_readlink',
211 'getdir' => 'main::x_getdir',
212 'mknod' => 'main::x_mknod',
213 'mkdir' => 'main::x_mkdir',
214 'unlink' => 'main::x_unlink',
215 'rmdir' => 'main::x_rmdir',
216 'symlink' => 'main::x_symlink',
217 'rename' => 'main::x_rename',
218 'link' => 'main::x_link',
219 'chmod' => 'main::x_chmod',
220 'chown' => 'main::x_chown',
221 'truncate' => 'main::x_truncate',
222 'utime' => 'main::x_utime',
223 'open' => 'main::x_open',
224 'read' => 'main::x_read',
225 'write' => 'main::x_write',
226 'statfs' => 'main::x_statfs',
230 # vim: ts=4 ai et hls