some questions on the minor number of device Post: 302564107

9 More Discussions You Might Find Interesting

1. Programming

How to check number of first slot on the MO or TAPE device?

Hi, I need to discover is MO or Tape device counting slots begining on 0 or 1. THS

2. Programming

Device Major/Minor numbers

To further my fledgling knowledge of C, I am re-writing some of the Unix command set. My current command is an ls-style command. All works well, except for device files. How do I get the major/minor numbers for the dev files? I see from the stat struct there are st_rdev and st_dev members. Do...

3. Solaris

major & minor number

Hi Can anyone tell me what is major number and minor number in the mknod command. Also what these numbers mean. I have gone through the man pages but still I couldn't understand. Regards

4. Solaris

questions on how to install Solaris 10 via DVD/RW external device

Whoa...glad to see this forum si up and running, as a few weeks ago I tried to check in and found it directing me somewhere else and felt maybe this board was being hijacked or someone was closing down this forum. Here is a problem I am having. I got a SunFire V100 and disc with Solaris 10 on...

5. Linux

Device serial number

Hey! I'm trying to figure out a sollution for a problem I have at my company with an Iomega MiniMax 500 GB USB disk. If i run cat /proc/bus/usb/devices I get this information: T: Bus=01 Lev=02 Prnt=04 Port=00 Cnt=01 Dev#= 5 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00...

6. Solaris

V-5-1-663 Duplicate virtual device number

hi folks here is my case Storage XP24K Business copy setup OS Solaris 10 Verital 4.1 Business copy is running between a production server and backup server using xp24k when the disk groups are imported back on backup server after BC from the prduction server following error is reported...

7. Solaris

Help with Major and minor number

Hi Does anyone know what the major and minor numbers are in Solaris?

8. Solaris

Major and Minor number of Virtual File System

Hi friends, Please let me know if there is any way to find out Major and Minor numbers of virtual file system like below: /devices 0K 0K 0K 0% /devices ctfs 0K 0K 0K 0% /system/contract proc 0K 0K ...

9. UNIX for Advanced & Expert Users

device number registration

I would THANK if you answer my doubts in DETAILS please. Here's a sample code to create a device: if(scull_major) { dev=MKDEV(scull_major, scull_minor); result=register_chrdev_region(dev, scull_nr_devs, "scull"); } else{ result=alloc_chrdev_region(&dev, scull_minor,...

LEARN ABOUT HPUX

clone

clone(7)						 Miscellaneous Information Manual						  clone(7)

NAME

       clone - opens a major and minor device pair on a STREAMS driver

DESCRIPTION

       The  driver is a "pass through" device driver that allows other drivers to select unique minor device numbers on each In effect, the driver
       passes an open operation through to the other driver.  This mechanism allows for multiple instantiations of a driver, each with a different
       minor number, through a single device file.

       When  the  driver  is opened, it is passed a major and minor device number by the operating system.  The major number is the driver's major
       number (72), and the minor number is the major number of the driver the user wishes to clone (referred to here as the target driver).   The
       driver  calls the open routine of the target driver with the flag which specifies a clone open.	The target driver's open routine allocates
       an unused minor number.	The target driver must use to make a new device number for the newly created device,  and  must  set  to  the  new
       device  number  returned  by The new device number is returned to the open through The open then returns to the user a file descriptor that
       points to the new instantiation of the target driver.

       The driver is an example of a clonable driver.

   Notes
       It is not possible to do multiple opens of a device with the same major and minor number using the driver.  This is because the	driver	is
       only given the major number of the driver to be cloned, and that driver will then select a minor number which has not been opened.

       When  called  with  a  pathname	which  corresponds  to the clonable driver, will return different results than when it is called on a file
       descriptor returned from of the same clonable driver pathname.

RETURN VALUES

       If the driver is given an invalid minor number, or if the driver indicated is not a clonable driver, the fails and is set to [ENXIO].

SEE ALSO

       open(2), fstat(2).

																	  clone(7)