[bug #42318] find with xdev traverses other filesystem when mountpiont is subdirectory

[Daniele Palumbo]

Follow-up Comment #4, bug #42318 (project findutils):

Seems that Solaris 10 is acting in a different way.
The mountpoint is not listed.

So i am wondering which is the correct interpretation for POSIX...




Solaris 10 U11 with the find command which is/was included in the SUNWcsu
package (as part of KU patch). 

-bash-3.2# more /etc/release
                   Oracle Solaris 10 1/13 s10s_u11wos_24a SPARC
  Copyright (c) 1983, 2013, Oracle and/or its affiliates. All rights
reserved.
                            Assembled 17 January 2013
-bash-3.2# uname -a
SunOS xxxxxxxx 5.10 Generic_150400-26 sun4v sparc sun4v

-bash-3.2# ls -l /usr/bin/find
-r-xr-xr-x   1 root     bin        28124 Oct  3  2008 /usr/bin/find

# mountpoint /mnt/testmount
-bash-3.2# ls -ld /mnt
drwxr-xr-x   3 root     sys            3 Mar 21 14:52 /mnt
-bash-3.2# ls -ld /mnt/testmount
drwxr-xr-x   2 root     root           2 Mar 21 14:52 /mnt/testmount
-bash-3.2# ls -lR /mnt/testmount
/mnt/testmount:
total 0

# mount ZFS fs mounttest on testmount
-bash-3.2# zfs mount zones_rpool/mounttest
-bash-3.2# zfs list zones_rpool/mounttest
NAME                   USED  AVAIL  REFER  MOUNTPOINT
zones_rpool/mounttest   31K  88.8G    31K  /mnt/testmount

# create dirs
-bash-3.2# mkdir -m 777 /mnt/testmount/ww_dir1
-bash-3.2# mkdir -m 777 /mnt/testmount/ww_dir2
-bash-3.2# mkdir -m 755 /mnt/testmount/dir3

# find /mnt 
-bash-3.2# find /mnt -xdev -perm -o+w -a ! -perm -1000
# find /mnt/testmount
-bash-3.2# find /mnt/testmount -xdev -perm -o+w -a ! -perm -1000
/mnt/testmount/ww_dir2
/mnt/testmount/ww_dir1

# chmod mountpoint
-bash-3.2# chmod 777 /mnt/testmount

# repeat finds
-bash-3.2# find /mnt -xdev -perm -o+w -a ! -perm -1000
-bash-3.2# ls -ld /mnt/testmount
drwxrwxrwx   5 root     root           5 Mar 21 18:32 /mnt/testmount
-bash-3.2# ls -lR /mnt/testmount
/mnt/testmount:
total 9
drwxr-xr-x   2 root     root           2 Mar 21 18:32 dir3
drwxrwxrwx   2 root     root           2 Mar 21 18:32 ww_dir1
drwxrwxrwx   2 root     root           2 Mar 21 18:32 ww_dir2
/mnt/testmount/dir3:
total 0
/mnt/testmount/ww_dir1:
total 0
/mnt/testmount/ww_dir2:
total 0
-bash-3.2# find /mnt/testmount -xdev -perm -o+w -a ! -perm -1000
/mnt/testmount
/mnt/testmount/ww_dir2
/mnt/testmount/ww_dir1

# umount testmount
-bash-3.2# zfs umount /mnt/testmount
-bash-3.2# find /mnt/testmount -xdev -perm -o+w -a ! -perm -1000
-bash-3.2# find /mnt -xdev -perm -o+w -a ! -perm -1000


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