Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

anocancel(9f) [v7 man page]

anocancel(9F)						   Kernel Functions for Drivers 					     anocancel(9F)

NAME
anocancel - prevent cancellation of asynchronous I/O request SYNOPSIS
#include <sys/ddi.h> #include <sys/sunddi.h> int anocancel( ); INTERFACE LEVEL
Solaris DDI specific (Solaris DDI). DESCRIPTION
anocancel() should be used by drivers that do not support canceling asynchronous I/O requests. anocancel() is passed as the driver cancel routine parameter to aphysio(9F). RETURN VALUES
anocancel() returns ENXIO. SEE ALSO
aread(9E), awrite(9E), aphysio(9F) Writing Device Drivers SunOS 5.10 9 Nov 1994 anocancel(9F)

Check Out this Related Man Page

aphysio(9F)						   Kernel Functions for Drivers 					       aphysio(9F)

NAME
aphysio - perform asynchronous physical I/O SYNOPSIS
#include <sys/types.h> #include <sys/buf.h> #include <sys/uio.h> #include <sys/aio_req.h> #include <sys/ddi.h> #include <sys/sunddi.h> int aphysio(int (*strat)(struct buf *), int (*cancel)(struct buf *), dev_t dev, int rw, void (*mincnt)(struct buf *), struct aio_req *aio_reqp); PARAMETERS
strat Pointer to device strategy routine. cancel Pointer to driver cancel routine. Used to cancel a submitted request. The driver must pass the address of the function anocancel(9F) because cancellation is not supported. dev The device number. rw Read/write flag. This is either B_READ when reading from the device or B_WRITE when writing to the device. mincnt Routine which bounds the maximum transfer unit size. aio_reqp Pointer to the aio_req(9S) structure which describes the user I/O request. INTERFACE LEVEL
Solaris DDI specific (Solaris DDI). DESCRIPTION
aphysio() performs asynchronous I/O operations between the device and the address space described by aio_reqp->aio_uio. Prior to the start of the transfer, aphysio() verifies the requested operation is valid. It then locks the pages involved in the I/O transfer so they can not be paged out. The device strategy routine, strat, is then called one or more times to perform the physical I/O operations. aphysio() does not wait for each transfer to complete, but returns as soon as the necessary requests have been made. aphysio() calls mincnt to bound the maximum transfer unit size to a sensible default for the device and the system. Drivers which do not provide their own local mincnt routine should call aphysio() with minphys(9F). minphys(9F) is the system mincnt routine. minphys(9F) ensures the transfer size does not exceed any system limits. If a driver supplies a local mincnt routine, this routine should perform the following actions: o If bp->b_bcount exceeds a device limit, set bp->b_bcount to a value supported by the device. o Call minphys(9F) to ensure that the driver does not circumvent additional system limits. RETURN VALUES
aphysio() returns: 0 Upon success. non-zero Upon failure. CONTEXT
aphysio() can be called from user context only. SEE ALSO
aread(9E), awrite(9E), strategy(9E), anocancel(9F), biodone(9F), biowait(9F), minphys(9F), physio(9F), aio_req(9S), buf(9S), uio(9S) Writing Device Drivers WARNINGS
It is the driver's responsibility to call biodone(9F) when the transfer is complete. BUGS
Cancellation is not supported in this release. The address of the function anocancel(9F) must be used as the cancel argument. SunOS 5.10 9 Nov 1994 aphysio(9F)
Man Page

14 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

The efficiency between GREP and SED???

Hello Everyone! I am a newbie. I'd like to get key lines from a big txt file by Reg Exp, The file is nearly 22MB. GREP or SED?which may be the best choice,more efficient way? or any other best practise? Thank you in advance. Ever:) (5 Replies)
Discussion started by: ever
5 Replies

2. AIX

crontab every 5 min.

Hi running aix 6.1 oslevel 6100-07-03-1207 I need to confirm that this cron entry is set properly. I need it set for every 5 min. 0,5,10,15,20,25,30,35,40,45,50,55 * * * * /path/to/script.sh it does not appear that it is running every 5 min but it did in the beginning. (4 Replies)
Discussion started by: vpundit
4 Replies

3. Shell Programming and Scripting

Goto - UNIX v6 Manual Questions

Hey :) I am trying to understand the command goto. I have some questions regarding the goto manual. 1.What does the underlined part mean? I'm not allowed to type goto in the shell? But if goto is written into a file everything is okay? 2.So if a part of my file looks like this ... goto... (8 Replies)
Discussion started by: orbit
8 Replies

4. AIX

[Tip] HACMP 7.1.3 and DB/2-Installation

We just found out that the installation of DB/2 on a HACMP- (PowerHA-) Cluster running v7.1.3 is not possible due to a bug in HACMP. DB/2-version was 10.5 but this seems to apply to 10.1 too (and probably other versions as well). The error message the DB/2-installer issues is something like: ... (2 Replies)
Discussion started by: bakunin
2 Replies

5. Shell Programming and Scripting

Need to add prefix using sed or awk from cat the file

I need the use sed or AWK using cat the file Node1 TDEV RW 1035788 TDEV RW 1035788 Server1 TDEV RW 69053 Server2 TDEV RW 69053 TDEV RW 103579 Server3 TDEV RW 69053 server4 RDF1+TDEV RW 69053 RDF1+TDEV RW 517894 RDF1+TDEV RW 621473 server6 TDEV RW 34526 TDEV RW 34526 (22 Replies)
Discussion started by: ranjancom2000
22 Replies

6. UNIX for Beginners Questions & Answers

Sort by values in the 1st row, leaving first four coulumns untouched

Dear all, will be thankful if you can help on sort command. My data looks like (tab separated; number of columns 2317; N of rows ~200000): a b c d V10 V2 V8 V4 V7 xx z y 1000 1 2 0 2 0 tr v m 1001 0 0 1 2 2 rg s ... (7 Replies)
Discussion started by: kush
7 Replies

7. Solaris

Need help to compile and create python64 bit (2.7.9) on Solaris10

Hi, I am trying to build python(2.7.9) 64 bit from source on solaris10. Using the below to compile ./configure CFLAGS=-m64 LDFLAGS=-m64 But getting errors like below while executing make make: Fatal error: Command failed for target `libinstall' OS info: isainfo -v 64-bit amd64... (9 Replies)
Discussion started by: Sumanthsv
9 Replies

8. Shell Programming and Scripting

Read a file and save every word in a variable to use

Hello there so i have a txt file containing word like "one two three four plus four five six". I want to save every word in the file into a variable, and then use that variable to generate real numbers and apply the arithmetic value on them. example: the txt files becomes 123 + 456 and... (10 Replies)
Discussion started by: azaiiez
10 Replies

9. UNIX for Advanced & Expert Users

Required libs to compile libXft

Hello. I am looking for all the necessary packages required to be able to compile libXft. I tried to compile libXft-2.1.8.2$ and the error message was: checking for XRENDER... checking for XRENDER... checking for X... no checking X11/extensions/Xrender.h usability... no checking... (1 Reply)
Discussion started by: colt
1 Replies

10. What is on Your Mind?

Cyber Dystopia Teaser (720 HD)

Working on a new cybersecurity, dystopian world series and made a short 2 min teaser today. Cyber Dystopia (720 HD) https://www.youtube.com/watch?v=g9Ca07J_YC8 If anyone has any ideas for the story, please write out some story lines in the comments and join the production team! (1 Reply)
Discussion started by: Neo
1 Replies

11. UNIX for Beginners Questions & Answers

Linux froze and got back working 5 days later, no reboot.

Hello my friends, I've come across the weirdest of glitches. I'm running a simple weather monitor (just temperature) on a Raspbeery Pi 3B (Raspbian Linux 4.14.98-v7+). It has a 3G modem that sends out simple packets to my server at home. On june 5th I lost remote access to the device.... (1 Reply)
Discussion started by: OmahaWiz
1 Replies

12. UNIX for Advanced & Expert Users

Shopt -s histappend

What is the point of this? Whenever I close my shell it appends to the history file without adding this. I have never seen it overwrite my history file. # When the shell exits, append to the history file instead of overwriting it shopt -s histappend (3 Replies)
Discussion started by: cokedude
3 Replies

13. Shell Programming and Scripting

Building JSON command with bash script

Hello. I'm new to bash script and I'm learning the basics by writing some scripts. Recently a friend of mine asked me if I could try to write a script to him to automate a couple of processes that uses JSON RPCs. I'll try to explain in few words the workflow just to contextualize the problem.... (48 Replies)
Discussion started by: psysc0rpi0n
48 Replies

14. UNIX for Beginners Questions & Answers

Bash - here document on RHEL 6.8 and 6.9 servers aren't working

H Forum, I was thankful in getting help from this post that allowed me to connect to multiple severs at once using here documents to gather data into variables. But I've discovered that the same bash command that works on my RHEL 7 servers do not work on RHEL 6? What's strange about my... (4 Replies)
Discussion started by: greavette
4 Replies