GENERIC_PIPE_BUF_STE(9) pipes API GENERIC_PIPE_BUF_STE(9)NAME
generic_pipe_buf_steal - attempt to take ownership of a pipe_buffer
SYNOPSIS
int generic_pipe_buf_steal(struct pipe_inode_info * pipe, struct pipe_buffer * buf);
ARGUMENTS
pipe
the pipe that the buffer belongs to
buf
the buffer to attempt to steal
DESCRIPTION
This function attempts to steal the struct page attached to buf. If successful, this function returns 0 and returns with the page locked.
The caller may then reuse the page for whatever he wishes; the typical use is insertion into a different file page cache.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 GENERIC_PIPE_BUF_STE(9)
Check Out this Related Man Page
STAT(2) System Calls Manual STAT(2)NAME
stat, fstat - get file status
SYNOPSIS
#include <sys/types.h>
#include <sys/stat.h>
stat(name, buf)
char *name;
struct stat *buf;
fstat(fildes, buf)
struct stat *buf;
DESCRIPTION
Stat obtains detailed information about a named file. Fstat obtains the same information about an open file known by the file descriptor
from a successful open, creat, dup or pipe(2) call.
Name points to a null-terminated string naming a file; buf is the address of a buffer into which information is placed concerning the file.
It is unnecessary to have any permissions at all with respect to the file, but all directories leading to the file must be searchable. The
layout of the structure pointed to by buf as defined in <stat.h> is given below. St_mode is encoded according to the `#define' statements.
The mode bits 0000070 and 0000007 encode group and others permissions (see chmod(2)). The defined types, ino_t, off_t, time_t, name vari-
ous width integer values; dev_t encodes major and minor device numbers; their exact definitions are in the include file <sys/types.h> (see
types(5).
When fildes is associated with a pipe, fstat reports an ordinary file with restricted permissions. The size is the number of bytes queued
in the pipe.
st_atime is the file was last read. For reasons of efficiency, it is not set when a directory is searched, although this would be more
logical. st_mtime is the time the file was last written or created. It is not set by changes of owner, group, link count, or mode.
st_ctime is set both both by writing and changing the i-node.
SEE ALSO ls(1), filsys(5)DIAGNOSTICS
Zero is returned if a status is available; -1 if the file cannot be found.
ASSEMBLER
(stat = 18.)
sys stat; name; buf
(fstat = 28.)
(file descriptor in r0)
sys fstat; buf
STAT(2)
Hi everyone,
I know the following questions are noobish questions but I am asking them because I am confused about the basics of history behind UNIX and LINUX.
Ok onto business, my questions are-:
Was/Is UNIX ever an open source operating system ?
If UNIX was... (21 Replies)
Hello and thanks in advance for any help anyone can offer me
I'm trying to learn the find command and thought I was understanding it... Apparently I was wrong. I was doing compound searches and I started getting weird results with the -size test. I was trying to do a search on a 1G file owned by... (14 Replies)
hi all,
i have installed quota on my centos 7 machine and its what im after (setting size limit on users, so they cant fill the hard drive)
i want to now make this part of my create user script for my sftp server so i want to do a echo and a read command so i capture the limit they enter... (0 Replies)
Hi everybody,
Which Unix base OS have best performance for HOST virtualization?
I tested SmartOS but it needs another OS to connect remotely!
Thanks in advance. (11 Replies)
Hi All,
I need to write a shell script which opens a file and increments the version(text) within the file every time the script runs. For example:
$ cat docker_file.yml
version: '3.1'
services:
ui:
image: repo-srv.dev.io:5000/facebook/ui:0.0.2-QA1
$
So, I would like... (6 Replies)
Dear Team
We use DB2 v10.5 and using DBArtisan tool
Can someone please guide how to convert digits to binary numbers using db2 feature.
Ex> for number 9 , binary should be 1001 ( 8+1)
Any help appreciated. Thanks (2 Replies)
hi folks,
how to using tar with exclude directory and compress it using tar.Z
i only know how to exclude dir only with this command below:
tar -cvf /varios/restore/test.tar -X excludefile.txt /jfma/test1/
how to compress it using 1 command?
Thanx
Please use CODE tags as... (6 Replies)
Quite an obscure question I think.
We have a rebuild process for remote sites that allows us to PXE rebuild a till (actually a PC with a touch screen and various fancy bits) running CentOS. The current CentOS5 tills work just fine with a tar image restore and some personalisation. Sadly,... (4 Replies)
Hello All,
I had recently learnt a bit of Docker(which provides containerization process).
Here are some of my learning points from it.
Let us start first with very basic question:
What is Docker:
Docker is a platform for sysadmins and developers to DEPLOY, DEVELOP and RUN applications ... (7 Replies)
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)
Hello... And thanks in advance for any help anyone can offer me
I was trying to work out the differences between displaying modify, access, and change times with the 'ls' command. Everything seems in order when I look at files, but the access time on a directory doesn't seem to change when I... (4 Replies)
Hello everyone,
I am having an issue here with CentOS release 6.6 (Final) that shows all of the space used up, but I can't tell where the space went.
Seemingly I am using up 100%, according to
df -h
Filesystem Size Used Avail Use% Mounted on... (27 Replies)
I'm trying to use a bash script for a psych experiment that involves listening to sound files and responding. If I have something like the code below, how can I make sure that a key press is assigned to RESPONSE only after the second echo statement?
for i in 1 2 3; do
echo "Ready?"
sleep 2
... (10 Replies)
After the success of the jq - tool for parsing and manipulating JSON-Data someone wrote a tool called yq, which aims to be the same for YAML, what jq is for JSON. Seems to work fine. I'll definitely give it a chance in future.
Example YAML-File:
--- !ruby/object:Puppet::Node::Facts
... (1 Reply)
Dear All,
I am very pleased to announce that Dave Munro (gull04) is joining the Moderation Team, after being a very valuable member of UNIX.com for 15+ years.
Dave is an IT Consultant with 30 years of experience this year, has worked in many of the industry vertical market segments and has... (6 Replies)