07-09-2012
Quote:
Originally Posted by
nitj
what are the device numbers mentioned pfiles for the inodes residing in virtual file system?
The major number identifies the driver and the minor number an index passed to the driver to be used by the kernel to access a file.
Physical devices have their driver listed in the /etc/name_to_major file to keep the numbering between reboots. Virtual device drivers, like ctfs, are not listed there as there is no need for it.
This User Gave Thanks to jlliagre For This Post:
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LEARN ABOUT MOJAVE
drvconfig
drvconfig(1M) System Administration Commands drvconfig(1M)
NAME
drvconfig - apply permission and ownership changes to devices
SYNOPSIS
drvconfig [-bn] [-a alias_name] [-c class_name] [-i drivername] [-m major_num] [-r root_dir]
DESCRIPTION
devfsadm(1M) is now the preferred command and should be used instead of drvconfig.
The default operation of drvconfig is to apply permission and ownership changes to devices. Normally, this command is run automatically
after a new driver has been installed (with add_drv(1M)) and the system has been rebooted.
OPTIONS
The following options are supported:
-aalias_name Add the name alias_name to the list of aliases that this driver is known by. This option, if used, must be used with the -m
major_num, the -b and the -i drivername options.
-b Add a new major number to name binding into the kernel's internal name_to_major tables. This option is not normally used
directly, but is used by other utilities such as add_drv(1M). Use of the -b option requires that -i and -m be used also. No
/devices entries are created.
-cclass_name The driver being added to the system exports the class class_name. This option is not normally used directly, but is used
by other utilities. It is only effective when used with the -b option.
-idrivername Only configure the devices for the named driver. The following options are used by the implementation of add_drv(1M) and
rem_drv(1M), and may not be supported in future versions of Solaris:
-mmajor_num Specify the major number major_num for this driver to add to the kernel's name_to_major binding tables.
-n Do not try to load and attach any drivers, or if the -i option is given, do not try to attach the driver named drivername.
-rroot_dir Perform operations under root_dir, rather than directly under root.
EXIT STATUS
0 Successful completion.
non-zero An error occurred.
FILES
/devices Device nodes directory
/etc/minor_perm Minor mode permissions
/etc/name_to_major Major number binding
/etc/driver_classes Driver class binding file
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
sh(1), add_drv(1M), modinfo(1M), modload(1M), modunload(1M), rem_drv(1M), update_drv(1M), path_to_inst(4), attributes(5), devfs(7FS)
SunOS 5.10 9 Aug 2004 drvconfig(1M)