Broken on NetBSD 10.0

[guijan]

After successfully compiling 0b41c6d unmodified:

# fuse/mount.exfat-fuse /dev/dk0 /mnt
fuse/mount.exfat-fuse: Shared object "libfuse.so.2" not found

It can be worked around with LD_PRELOAD, which throws some errors but does mount the filesystem:

# LD_PRELOAD=/usr/pkg/lib/libfuse.so.2 fuse/mount.exfat-fuse /dev/dk0 /mnt
mount.exfat-fuse: perfuse_open: setsockopt SO_SNDBUF to 2162688 failed: No buffer space available
mount.exfat-fuse: perfuse_open: setsockopt SO_RCVBUF to 2162688 failed: No buffer space available
mount.exfat-fuse: perfuse_open: setsockopt SO_SNDBUF to 2162688 failed: No buffer space available
mount.exfat-fuse: perfuse_open: setsockopt SO_RCVBUF to 2162688 failed: No buffer space available
mount.exfat-fuse: perfuse_open: setsockopt SO_SNDBUF to 2162688 failed: No buffer space available
mount.exfat-fuse: perfuse_open: setsockopt SO_RCVBUF to 2162688 failed: No buffer space available

After mounting the filesystem like this, it works a little, but writing with block sizes larger than 8191 bytes causes mount.exfat-fuse to error and exit.

Mounting again with the -d flag like this:

# LD_PRELOAD=/usr/pkg/lib/libfuse.so.2 fuse/mount.exfat-fuse -d /dev/dk0 /mnt

And writing a single 8191 (1 byte short of 8KiB) block with dd succeeds:

# dd if=/dev/zero of=/mnt/test bs=8191 count=1
1+0 records in
1+0 records out
8191 bytes transferred in 5.255 secs (1558 bytes/sec)

And mount.exfat-fuse produces the following output:

unique: 1, opcode: LOOKUP (1), nodeid: 1, insize: 45, pid: 4950
LOOKUP /test
getattr /test
   NODEID: 2
   unique: 1, success, outsize: 144
unique: 2, opcode: SETATTR (4), nodeid: 2, insize: 128, pid: 4950
truncate /test 0
getattr /test
   unique: 2, success, outsize: 120
unique: 3, opcode: OPEN (14), nodeid: 2, insize: 48, pid: 4950
open flags: 0x402 /test
   open[4256039552] flags: 0x402 /test
   unique: 3, success, outsize: 32
unique: 4, opcode: SETATTR (4), nodeid: 2, insize: 128, pid: 4950
truncate /test 8191
getattr /test
   unique: 4, success, outsize: 120
unique: 6, opcode: WRITE (16), nodeid: 2, insize: 4176, pid: 4950
writepage[4256039552] 4096 bytes to 0 flags: 0x1
   writepage[4256039552] 4096 bytes to 0
   unique: 6, success, outsize: 24
unique: 7, opcode: WRITE (16), nodeid: 2, insize: 4175, pid: 4950
write[4256039552] 4095 bytes to 4096 flags: 0x1
   write[4256039552] 4095 bytes to 4096
   unique: 7, success, outsize: 24
unique: 8, opcode: FSYNC (20), nodeid: 2, insize: 56, pid: 4950
fsync[4256039552] datasync: 1
   unique: 8, success, outsize: 16
unique: 9, opcode: RELEASE (18), nodeid: 2, insize: 64, pid: 4950
release[4256039552] flags: 0x0
   unique: 9, success, outsize: 16

However, writing an 8KiB or larger block succeeds on the application side:

# dd if=/dev/zero of=/mnt/test bs=8k count=1
1+0 records in
1+0 records out
8192 bytes transferred in 0.376 secs (21787 bytes/sec)

But causes mount.exfat-fuse to error and exit:

unique: 1, opcode: LOOKUP (1), nodeid: 1, insize: 45, pid: 4427
LOOKUP /test
getattr /test
   NODEID: 2
   unique: 1, success, outsize: 144
unique: 2, opcode: SETATTR (4), nodeid: 2, insize: 128, pid: 4427
truncate /test 0
getattr /test
   unique: 2, success, outsize: 120
unique: 3, opcode: OPEN (14), nodeid: 2, insize: 48, pid: 4427
open flags: 0x402 /test
   open[4256039552] flags: 0x402 /test
   unique: 3, success, outsize: 32
unique: 4, opcode: SETATTR (4), nodeid: 2, insize: 128, pid: 4427
truncate /test 8192
getattr /test
   unique: 4, success, outsize: 120
perfused: perfused_writeframe: send returned -1, errno = 2: No such file or directory
xchg_pb failed: No such file or directoryshort read on fuse device
fuse: failed to unmount /mnt: Invalid argument
WARN: non-zero reference counter (1) for 'test'.