VOP_ACCESS(9) BSD Kernel Developer's Manual VOP_ACCESS(9)NAME
VOP_ACCESS, VOP_ACCESSX -- check access permissions of a file or Unix domain socket
SYNOPSIS
#include <sys/param.h>
#include <sys/vnode.h>
int
VOP_ACCESS(struct vnode *vp, accmode_t accmode, struct ucred *cred, struct thread *td);
int
VOP_ACCESSX(struct vnode *vp, accmode_t accmode, struct ucred *cred, struct thread *td);
DESCRIPTION
This entry point checks the access permissions of the file against the given credentials.
Its arguments are:
vp The vnode of the file to check.
accmode The type of access required.
cred The user credentials to check.
td The thread which is checking.
The accmode is a mask which can contain flags described in <sys/vnode.h>, e.g. VREAD, VWRITE or VEXEC. For VOP_ACCESS(), the only flags
that may be set in accmode are VEXEC, VWRITE, VREAD, VADMIN and VAPPEND. To check for other flags, one has to use VOP_ACCESSX() instead.
LOCKS
The vnode will be locked on entry and should remain locked on return.
RETURN VALUES
If the file is accessible in the specified way, then zero is returned, otherwise an appropriate error code is returned.
ERRORS
[EPERM] An attempt was made to change an immutable file.
[EACCES] The permission bits the file mode or the ACL do not permit the requested access.
SEE ALSO vaccess(9), vaccess_acl_nfs4(9), vaccess_acl_posix1e(9), vnode(9)AUTHORS
This manual page was written by Doug Rabson.
BSD September 18, 2009 BSD
Check Out this Related Man Page
VOP_ACCESS(9) BSD Kernel Developer's Manual VOP_ACCESS(9)NAME
VOP_ACCESS, VOP_ACCESSX -- check access permissions of a file or Unix domain socket
SYNOPSIS
#include <sys/param.h>
#include <sys/vnode.h>
int
VOP_ACCESS(struct vnode *vp, accmode_t accmode, struct ucred *cred, struct thread *td);
int
VOP_ACCESSX(struct vnode *vp, accmode_t accmode, struct ucred *cred, struct thread *td);
DESCRIPTION
This entry point checks the access permissions of the file against the given credentials.
Its arguments are:
vp The vnode of the file to check.
accmode The type of access required.
cred The user credentials to check.
td The thread which is checking.
The accmode is a mask which can contain flags described in <sys/vnode.h>, e.g. VREAD, VWRITE or VEXEC. For VOP_ACCESS(), the only flags
that may be set in accmode are VEXEC, VWRITE, VREAD, VADMIN and VAPPEND. To check for other flags, one has to use VOP_ACCESSX() instead.
LOCKS
The vnode will be locked on entry and should remain locked on return.
RETURN VALUES
If the file is accessible in the specified way, then zero is returned, otherwise an appropriate error code is returned.
ERRORS
[EPERM] An attempt was made to change an immutable file.
[EACCES] The permission bits the file mode or the ACL do not permit the requested access.
SEE ALSO vaccess(9), vaccess_acl_nfs4(9), vaccess_acl_posix1e(9), vnode(9)AUTHORS
This manual page was written by Doug Rabson.
BSD September 18, 2009 BSD
I need to use bash to convert sentences where all words start with a small letter into one where all words start with a capital letter.
So that a string like:
are utilities ready for hurricane sandy
becomes:
Are Utilities Ready For Hurricane Sandy (10 Replies)
Hi
I am new to this forum.
Any please help me to capture ctrl x and ctrl y via a bash script.
and please tell me how to clear the prompt via bash script
BR
Ramukumar M (4 Replies)
I have an Oracle Linux 7.1 vsphere host built. It's be preconfigured with our security configurations.
What I would like to do is unconfigure this host. Then set the host to do firstboot --reconfigure.
how do I do that using /etc/sysconfig/firstboot?
I've tried setting
... (10 Replies)
i know from the command line, the symbol $_ is used to get the last command that was run.
however, id like to replicate this within a script.
meaning, how do i do something like this:
#!/bin/sh
ps -ef | egrep talling
StoreThisLastCommandA=$_
awk '/error/ {print $3}' /tmp/test... (5 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)
Hi Folks,
I feel that I should be posting this in the Unix for Dummies Forum and will probably wish I'd created an account and done just that - but here goes anyway.
I have two identical servers both Dell R430's both running RedHat Enterprise Server 7.4 and the same kernel, both have the same... (16 Replies)
Hi,
What is installation package and how to create it?
When we run:
in AIX:
installp package1
or
in Linux
rpm -ivh mypackage
What is package1 or mypackage in the abov examples and how to create them and deploy them?
I hope my question is clear enough.
Thank you (2 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)
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)