7 use POSIX qw(ENOENT ENOSYS EEXIST EPERM O_RDONLY O_RDWR O_APPEND O_CREAT);
8 use Fcntl qw(S_ISBLK S_ISCHR S_ISFIFO SEEK_SET);
9 my $can_syscall = eval {
10 require 'syscall.ph'; # for SYS_mknod and SYS_lchown
12 if (!$can_syscall && open my $fh, '<', '/usr/include/sys/syscall.h') {
14 my %sys = do { local $/ = undef;
15 <$fh> =~ m/\#define \s+ (\w+) \s+ (\d+)/gxms;
18 if ($sys{SYS_mknod} && $sys{SYS_lchown}) {
19 *SYS_mknod = sub { $sys{SYS_mknod} };
20 *SYS_lchown = sub { $sys{SYS_lchown} };
25 my $tmp = -d '/private' ? '/private/tmp' : '/tmp';
26 my $tmp_path = "$tmp/fusetest-" . $ENV{LOGNAME};
28 mkdir($tmp_path) || die "can't create $tmp_path: $!";
31 sub fixup { print STDERR "fixup $_[0] from @{[caller]}\n";
33 return $tmp_path if $path eq '/';
34 return $tmp_path . $path;
38 my ($file) = fixup(shift);
39 my (@list) = lstat($file);
40 return -$! unless @list;
45 my ($dirname) = fixup(shift);
46 unless(opendir(DIRHANDLE,$dirname)) {
49 my (@files) = readdir(DIRHANDLE);
55 my ($file) = fixup(shift);
57 return -$! unless sysopen(FILE,$file,$mode);
63 my ($file,$bufsize,$off) = @_;
65 my ($handle) = new IO::File;
66 return -ENOENT() unless -e ($file = fixup($file));
67 my ($fsize) = -s $file;
68 return -ENOSYS() unless open($handle,$file);
69 if(seek($handle,$off,SEEK_SET)) {
70 read($handle,$rv,$bufsize);
76 my ($file,$buf,$off) = @_;
78 return -ENOENT() unless -e ($file = fixup($file));
79 my ($fsize) = -s $file;
80 return -ENOSYS() unless open(FILE,'+<',$file);
81 if($rv = seek(FILE,$off,SEEK_SET)) {
82 $rv = print(FILE $buf);
84 $rv = -ENOSYS() unless $rv;
89 sub err { return (-shift || -$!) }
91 sub x_readlink { return readlink(fixup(shift)); }
92 sub x_unlink { return unlink(fixup(shift)) ? 0 : -$!; }
94 sub x_symlink { print "symlink\n"; return symlink(shift,fixup(shift)) ? 0 : -$!; }
97 my ($old) = fixup(shift);
98 my ($new) = fixup(shift);
99 my ($err) = rename($old,$new) ? 0 : -ENOENT();
102 sub x_link { return link(fixup(shift),fixup(shift)) ? 0 : -$! }
104 return -ENOSYS() if ! $can_syscall;
105 my ($fn) = fixup(shift);
106 print "nonexistent $fn\n" unless -e $fn;
108 # perl's chown() does not chown symlinks, it chowns the symlink's
109 # target. it fails when the link's target doesn't exist, because
110 # the stat64() syscall fails.
111 # this causes error messages when unpacking symlinks in tarballs.
112 my ($err) = syscall(&SYS_lchown,$fn,$uid,$gid,$fn) ? -$! : 0;
116 my ($fn) = fixup(shift);
118 my ($err) = chmod($mode,$fn) ? 0 : -$!;
121 sub x_truncate { return truncate(fixup(shift),shift) ? 0 : -$! ; }
122 sub x_utime { return utime($_[1],$_[2],fixup($_[0])) ? 0:-$!; }
124 sub x_mkdir { my ($name, $perm) = @_; return 0 if mkdir(fixup($name),$perm); return -$!; }
125 sub x_rmdir { return 0 if rmdir fixup(shift); return -$!; }
128 return -ENOSYS() if ! $can_syscall;
129 # since this is called for ALL files, not just devices, I'll do some checks
130 # and possibly run the real mknod command.
131 my ($file, $modes, $dev) = @_;
132 $file = fixup($file);
134 syscall(&SYS_mknod,$file,$modes,$dev);
139 sub x_statfs {return 255,1000000,500000,1000000,500000,4096}
140 my ($mountpoint) = "";
141 $mountpoint = shift(@ARGV) if @ARGV;
143 mountpoint=>$mountpoint,
144 getattr =>"main::x_getattr",
145 readlink=>"main::x_readlink",
146 getdir =>"main::x_getdir",
147 mknod =>"main::x_mknod",
148 mkdir =>"main::x_mkdir",
149 unlink =>"main::x_unlink",
150 rmdir =>"main::x_rmdir",
151 symlink =>"main::x_symlink",
152 rename =>"main::x_rename",
153 link =>"main::x_link",
154 chmod =>"main::x_chmod",
155 chown =>"main::x_chown",
156 truncate=>"main::x_truncate",
157 utime =>"main::x_utime",
158 open =>"main::x_open",
159 read =>"main::x_read",
160 write =>"main::x_write",
161 statfs =>"main::x_statfs",