# Fail to get perms on non-existent file.
expect getperm failed: No such file or directory
getperm /test
expect getperm failed: No such file or directory
getperm /dir/test

# Create file: inherits from root (0 READ)
write /test contents
expect 0 READ
getperm /test
setid 1
expect 0 READ
getperm /test
expect contents
read /test
expect write failed: Permission denied
write /test contents

# Take away read access to file.
setid 0
setperm /test 0 NONE
setid 1
expect getperm failed: Permission denied
getperm /test
expect read failed: Permission denied
read /test
expect write failed: Permission denied
write /test contents

# Grant everyone write access to file.
setid 0
setperm /test 0 WRITE
setid 1
expect getperm failed: Permission denied
getperm /test
expect read failed: Permission denied
read /test
write /test contents2
setid 0
expect contents2
read /test

# Grant everyone both read and write access.
setperm /test 0 READ/WRITE
setid 1
expect 0 READ/WRITE
getperm /test
expect contents2
read /test
write /test contents3
expect contents3
read /test

# Change so that user 1 owns it, noone else can do anything.
setid 0
setperm /test 1 NONE
setid 1
expect 1 NONE
getperm /test
expect contents3
read /test
write /test contents4

# User 2 can do nothing.
setid 2
expect setperm failed: Permission denied
setperm /test 2 NONE
expect getperm failed: Permission denied
getperm /test
expect read failed: Permission denied
read /test
expect write failed: Permission denied
write /test contents4

# Tools can always access things.
setid 0
expect 1 NONE
getperm /test
expect contents4
read /test
write /test contents5