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mount_ptyfs(8) [netbsd man page]

MOUNT_PTYFS(8)						    BSD System Manager's Manual 					    MOUNT_PTYFS(8)

NAME
mount_ptyfs -- mount the /dev/pts file system SYNOPSIS
mount_ptyfs [-g group|gid] [-m mode] [-o options] ptyfs mount_point DESCRIPTION
The mount_ptyfs command attaches an instance of the pseudo-terminal device filesystem to the global filesystem namespace. The conventional mount point is /dev/pts. The directory specified by mount_point is converted to an absolute path before use. This command is normally exe- cuted by mount(8) at boot time. The filesystem contains pseudo-terminal slave device nodes which are allocated dynamically via ptm(4), or they are already open via tradi- tional BSD style ptys. The options are as follows: -g group|gid Specify the group ownership of the slave pseudo-tty. -m mode Specify the default mode of the slave pseudo-tty. -o Options are specified with a -o flag followed by a comma separated string of options. mount_ptyfs specific options are group which corresponds to -g, and mode which corresponds to -m. See the mount(8) man page for pos- sible options and their meanings. FILES
n The nth pseudo-terminal device in use. SEE ALSO
mount(2), unmount(2), ptm(4), fstab(5), mount(8) HISTORY
The mount_ptyfs utility first appeared in NetBSD 3.0. BUGS
When multiple instances are mounted, they all display the union of the ptys used in each instance, not just the ones used in the particular instance. BSD
September 19, 2012 BSD

Check Out this Related Man Page

PTM(4)							   BSD Kernel Interfaces Manual 						    PTM(4)

NAME
ptm -- pseudo-terminal multiplexor device SYNOPSIS
pseudo-device pty [count] DESCRIPTION
The ptm driver is the backend for the /dev/ptm device. It supports three ioctl(2)s. The first is TIOCPTMGET, which allocates a free pseudo- terminal device, sets its user ID to the calling user, revoke(2)s it, and returns the opened file descriptors for both the master and the slave pseudo-terminal device to the caller in a struct ptmget. This struct has the following content: struct ptmget { int cfd; int sfd; char cn[16]; char sn[16]; }; where cfd and sfd contain the master resp. slave device's file descriptor and cn and sn the corresponding paths in the file system. The /dev/ptmx device supports two more ioctl(2)s, TIOCGRANTPT, which is used by grantpt(3), TIOCPTSNAME, which is used by ptsname(3). The ptm device is included with the pseudo-device pty(4). It can be disabled by adding ``options NO_DEV_PTM'' to the kernel configuration. FILES
/dev/ptm ptm access device /dev/ptmx ptm cloning device, used to implement Unix98 ptys SEE ALSO
grantpt(3), openpty(3), posix_openpt(3), ptsname(3), unlockpt(3), pty(4) HISTORY
The /dev/ptm device appeared in OpenBSD 3.5 and was ported to NetBSD 3.0. BSD
November 12, 2005 BSD
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