9 use POSIX qw(ENOENT ENOSYS EEXIST EPERM O_RDONLY O_RDWR O_APPEND O_CREAT);
10 use Fcntl qw(S_ISBLK S_ISCHR S_ISFIFO SEEK_SET S_ISREG S_ISFIFO S_IMODE);
11 my $can_syscall = eval {
12 require 'syscall.ph'; # for SYS_mknod and SYS_lchown
14 if (!$can_syscall && open my $fh, '<', '/usr/include/sys/syscall.h') {
15 my %sys = do { local $/ = undef;
16 <$fh> =~ m/\#define \s+ (\w+) \s+ (\d+)/gxms;
19 if ($sys{SYS_mknod} && $sys{SYS_lchown}) {
20 *SYS_mknod = sub { $sys{SYS_mknod} };
21 *SYS_lchown = sub { $sys{SYS_lchown} };
26 sub fixup { return "/tmp/fusetest-" . $ENV{LOGNAME} . shift }
29 my ($file) = fixup(shift);
30 my (@list) = lstat($file);
31 return -$! unless @list;
36 my ($dirname) = fixup(shift);
37 unless(opendir(DIRHANDLE,$dirname)) {
40 my (@files) = readdir(DIRHANDLE);
46 my ($file) = fixup(shift);
48 return -$! unless sysopen(FILE,$file,$mode);
54 my ($file,$bufsize,$off) = @_;
56 my ($handle) = new IO::File;
57 return -ENOENT() unless -e ($file = fixup($file));
58 my ($fsize) = -s $file;
59 return -ENOSYS() unless open($handle,$file);
60 if(seek($handle,$off,SEEK_SET)) {
61 read($handle,$rv,$bufsize);
67 my ($file,$buf,$off) = @_;
69 return -ENOENT() unless -e ($file = fixup($file));
70 my ($fsize) = -s $file;
71 return -ENOSYS() unless open(FILE,'+<',$file);
72 if($rv = seek(FILE,$off,SEEK_SET)) {
73 $rv = print(FILE $buf);
75 $rv = -ENOSYS() unless $rv;
80 sub err { return (-shift || -$!) }
82 sub x_readlink { return readlink(fixup(shift)); }
83 sub x_unlink { return unlink(fixup(shift)) ? 0 : -$!; }
85 sub x_symlink { print "symlink\n"; return symlink(shift,fixup(shift)) ? 0 : -$!; }
88 my ($old) = fixup(shift);
89 my ($new) = fixup(shift);
90 my ($err) = rename($old,$new) ? 0 : -ENOENT();
93 sub x_link { return link(fixup(shift),fixup(shift)) ? 0 : -$! }
95 return -ENOSYS() if ! $can_syscall;
96 my ($fn) = fixup(shift);
97 print "nonexistent $fn\n" unless -e $fn;
99 # perl's chown() does not chown symlinks, it chowns the symlink's
100 # target. it fails when the link's target doesn't exist, because
101 # the stat64() syscall fails.
102 # this causes error messages when unpacking symlinks in tarballs.
103 my ($err) = syscall(&SYS_lchown,$fn,$uid,$gid,$fn) ? -$! : 0;
107 my ($fn) = fixup(shift);
109 my ($err) = chmod($mode,$fn) ? 0 : -$!;
112 sub x_truncate { return truncate(fixup(shift),shift) ? 0 : -$! ; }
113 sub x_utime { return utime($_[1],$_[2],fixup($_[0])) ? 0:-$!; }
115 sub x_mkdir { my ($name, $perm) = @_; return 0 if mkdir(fixup($name),$perm); return -$!; }
116 sub x_rmdir { return 0 if rmdir fixup(shift); return -$!; }
119 return -ENOSYS() if ! $can_syscall;
120 # since this is called for ALL files, not just devices, I'll do some checks
121 # and possibly run the real mknod command.
122 my ($file, $modes, $dev) = @_;
123 $file = fixup($file);
125 if ($^O eq 'freebsd') {
126 if (S_ISREG($modes)) {
127 open(FILE, '>', $file) || return -$!;
131 } elsif (S_ISFIFO($modes)) {
132 my ($rv) = POSIX::mkfifo($file, S_IMODE($modes));
133 return $rv ? 0 : -POSIX::errno();
136 syscall(&SYS_mknod,$file,$modes,$dev);
141 sub x_statfs {return 255,1000000,500000,1000000,500000,4096}
142 my ($mountpoint) = "";
143 $mountpoint = shift(@ARGV) if @ARGV;
145 mountpoint=>$mountpoint,
146 getattr =>"main::x_getattr",
147 readlink=>"main::x_readlink",
148 getdir =>"main::x_getdir",
149 mknod =>"main::x_mknod",
150 mkdir =>"main::x_mkdir",
151 unlink =>"main::x_unlink",
152 rmdir =>"main::x_rmdir",
153 symlink =>"main::x_symlink",
154 rename =>"main::x_rename",
155 link =>"main::x_link",
156 chmod =>"main::x_chmod",
157 chown =>"main::x_chown",
158 truncate=>"main::x_truncate",
159 utime =>"main::x_utime",
160 open =>"main::x_open",
161 read =>"main::x_read",
162 write =>"main::x_write",
163 statfs =>"main::x_statfs",