aboutsummaryrefslogtreecommitdiffstats
path: root/perl/examples/loopback.pl
diff options
context:
space:
mode:
Diffstat (limited to 'perl/examples/loopback.pl')
-rwxr-xr-xperl/examples/loopback.pl136
1 files changed, 0 insertions, 136 deletions
diff --git a/perl/examples/loopback.pl b/perl/examples/loopback.pl
deleted file mode 100755
index bdc8c22..0000000
--- a/perl/examples/loopback.pl
+++ /dev/null
@@ -1,136 +0,0 @@
-#!/usr/bin/perl
-
-use strict;
-use Fuse;
-use IO::File;
-use POSIX qw(ENOENT ENOSYS EEXIST EPERM O_RDONLY O_RDWR O_APPEND O_CREAT);
-use Fcntl qw(S_ISBLK S_ISCHR S_ISFIFO SEEK_SET);
-require 'syscall.ph'; # for SYS_mknod and SYS_lchown
-
-sub fixup { return "/tmp/fusetest" . shift }
-
-sub x_getattr {
- my ($file) = fixup(shift);
- my (@list) = lstat($file);
- return -$! unless @list;
- return @list;
-}
-
-sub x_getdir {
- my ($dirname) = fixup(shift);
- unless(opendir(DIRHANDLE,$dirname)) {
- return -ENOENT();
- }
- my (@files) = readdir(DIRHANDLE);
- closedir(DIRHANDLE);
- return (@files, 0);
-}
-
-sub x_open {
- my ($file) = fixup(shift);
- my ($mode) = shift;
- return -$! unless sysopen(FILE,$file,$mode);
- close(FILE);
- return 0;
-}
-
-sub x_read {
- my ($file,$bufsize,$off) = @_;
- my ($rv) = -ENOSYS();
- my ($handle) = new IO::File;
- return -ENOENT() unless -e ($file = fixup($file));
- my ($fsize) = -s $file;
- return -ENOSYS() unless open($handle,$file);
- if(seek($handle,$off,SEEK_SET)) {
- read($handle,$rv,$bufsize);
- }
- return $rv;
-}
-
-sub x_write {
- my ($file,$buf,$off) = @_;
- my ($rv);
- return -ENOENT() unless -e ($file = fixup($file));
- my ($fsize) = -s $file;
- return -ENOSYS() unless open(FILE,'+<',$file);
- if($rv = seek(FILE,$off,SEEK_SET)) {
- $rv = print(FILE $buf);
- }
- $rv = -ENOSYS() unless $rv;
- close(FILE);
- return length($buf);
-}
-
-sub err { return (-shift || -$!) }
-
-sub x_readlink { return readlink(fixup(shift) ); }
-sub x_unlink { return unlink(fixup(shift)) ? 0 : -$!; }
-sub x_rmdir { return err(rmdir(fixup(shift)) ); }
-
-sub x_symlink { print "symlink\n"; return symlink(shift,fixup(shift)) ? 0 : -$!; }
-
-sub x_rename {
- my ($old) = fixup(shift);
- my ($new) = fixup(shift);
- my ($err) = rename($old,$new) ? 0 : -ENOENT();
- return $err;
-}
-sub x_link { return link(fixup(shift),fixup(shift)) ? 0 : -$! }
-sub x_chown {
- my ($fn) = fixup(shift);
- print "nonexistent $fn\n" unless -e $fn;
- my ($uid,$gid) = @_;
- # perl's chown() does not chown symlinks, it chowns the symlink's
- # target. it fails when the link's target doesn't exist, because
- # the stat64() syscall fails.
- # this causes error messages when unpacking symlinks in tarballs.
- my ($err) = syscall(&SYS_lchown,$fn,$uid,$gid,$fn) ? -$! : 0;
- return $err;
-}
-sub x_chmod {
- my ($fn) = fixup(shift);
- my ($mode) = shift;
- my ($err) = chmod($mode,$fn) ? 0 : -$!;
- return $err;
-}
-sub x_truncate { return truncate(fixup(shift),shift) ? 0 : -$! ; }
-sub x_utime { return utime($_[1],$_[2],fixup($_[0])) ? 0:-$!; }
-
-sub x_mkdir { my ($name, $perm) = @_; return 0 if mkdir(fixup($name),$perm); return -$!; }
-sub x_rmdir { return 0 if rmdir fixup(shift); return -$!; }
-
-sub x_mknod {
- # since this is called for ALL files, not just devices, I'll do some checks
- # and possibly run the real mknod command.
- my ($file, $modes, $dev) = @_;
- $file = fixup($file);
- $! = 0;
- syscall(&SYS_mknod,$file,$modes,$dev);
- return -$!;
-}
-
-# kludge
-sub x_statfs {return 255,1000000,500000,1000000,500000,4096}
-my ($mountpoint) = "";
-$mountpoint = shift(@ARGV) if @ARGV;
-Fuse::main(
- mountpoint=>$mountpoint,
- getattr=>\&x_getattr,
- readlink=>\&x_readlink,
- getdir=>\&x_getdir,
- mknod=>\&x_mknod,
- mkdir=>\&x_mkdir,
- unlink=>\&x_unlink,
- rmdir=>\&x_rmdir,
- symlink=>\&x_symlink,
- rename=>\&x_rename,
- link=>\&x_link,
- chmod=>\&x_chmod,
- chown=>\&x_chown,
- truncate=>\&x_truncate,
- utime=>\&x_utime,
- open=>\&x_open,
- read=>\&x_read,
- write=>\&x_write,
- statfs=>\&x_statfs,
-);