USER_REGSET_WRITEBAC(9) Machine State USER_REGSET_WRITEBAC(9)NAME
user_regset_writeback_fn - type of writeback function in struct user_regset
SYNOPSIS
typedef int user_regset_writeback_fn(struct task_struct * target, const struct user_regset * regset, int immediate);
ARGUMENTS
target
thread being examined
regset
regset being examined
immediate
zero if writeback at completion of next context switch is OK
DESCRIPTION
This call is optional; usually the pointer is NULL. When provided, there is some user memory associated with this regset's hardware, such
as memory backing cached register data on register window machines; the regset's data controls what user memory is used (e.g. via the stack
pointer value).
Write register data back to user memory. If the immediate flag is nonzero, it must be written to the user memory so uaccess or
access_process_vm can see it when this call returns; if zero, then it must be written back by the time the task completes a context switch
(as synchronized with wait_task_inactive). Return 0 on success or if there was nothing to do, -EFAULT for a memory problem (bad stack
pointer or whatever), or -EIO for a hardware problem.
Kernel Hackers Manual 2.6. July 2010 USER_REGSET_WRITEBAC(9)
Check Out this Related Man Page
UTRACE_PREPARE_EXAMI(9) utrace core API UTRACE_PREPARE_EXAMI(9)NAME
utrace_prepare_examine - prepare to examine thread state
SYNOPSIS
int utrace_prepare_examine(struct task_struct * target, struct utrace_engine * engine, struct utrace_examiner * exam);
ARGUMENTS
target
thread of interest, a struct task_struct pointer
engine
engine pointer returned by utrace_attach_task
exam
temporary state, a struct utrace_examiner pointer
DESCRIPTION
This call prepares to safely examine the thread target using struct user_regset calls, or direct access to thread-synchronous fields.
When target is current, this call is superfluous. When target is another thread, it must held stopped via UTRACE_STOP by engine.
This call may block the caller until target stays stopped, so it must be called only after the caller is sure target is about to
unschedule. This means a zero return from a utrace_control call on engine giving UTRACE_STOP, or a report_quiesce or report_signal callback
to engine that used UTRACE_STOP in its return value.
Returns -ESRCH if target is dead or -EINVAL if UTRACE_STOP was not used. If target has started running again despite UTRACE_STOP (for
SIGKILL or a spurious wakeup), this call returns -EAGAIN.
When this call returns zero, it's safe to use struct user_regset calls and task_user_regset_view on target and to examine some of its
fields directly. When the examination is complete, a utrace_finish_examine call must follow to check whether it was completed safely.
Kernel Hackers Manual 2.6. July 2010 UTRACE_PREPARE_EXAMI(9)
Hi all,
I want to create a new user and grant him ONLY transfer files access to a specific directory where he can only upload and read the files. He should be restricted to this activity only.
Regards (6 Replies)
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)
Hi,
Last 2 weeks I have searched many forums and i haven't found the answer for the question:
How to get all command output to Putty title?
Needed it for other programs to know when some jobs on a server is done and is it done right or wrong. Plink stdout and stdin wasn't working, i used many... (1 Reply)
anyone have any idea how do to this with auth_attr?
I suspect if I grant him
solaris.device.:RO::Device Allocation::help=DevAllocHeader.html
that will work but I'm unsure. Just looking for a second opinion. (10 Replies)
I am looking for a stable, reliable system to replace my current Windows systems in the home. These are simple systems that I purchased from the local Big Box store.
I have heard many good things about Unix and it's various children and it sounds like a good option to me. I have worked... (2 Replies)
We have a lot of scripts using cut as :
cut -c 0-8 --works for cut (GNU coreutils) 5.97, but does not work for cut (GNU coreutils) 8.4.
Gives error -
cut: fields and positions are numbered from 1
Try `cut --help' for more information.
The position needs to start with 1 for later... (6 Replies)
I've got a problem with a proxy configuration. We have an LDAP group that lists all users who are authorised to use the proxy to FTP (usually Filezilla) out to the world, and by implication those not in the group should be denied. My users are delighted that this has been enabled and those that... (9 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)
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 for all,
I am testing the behavior of a 32 bit application running on Solaris 5.10 (SPARC), and realize it reaches 4GB of memory and then crashes.
It doesn't matter the amount of used memory as application is intended to perform many transactions; rather, what I want to achieve is to... (2 Replies)