TRACEHOOK_SIGNAL_HAN(9) Kernel Internals TRACEHOOK_SIGNAL_HAN(9)NAME
tracehook_signal_handler - signal handler setup is complete
SYNOPSIS
void tracehook_signal_handler(int sig, siginfo_t * info, const struct k_sigaction * ka, struct pt_regs * regs, int stepping);
ARGUMENTS
sig
number of signal being delivered
info
siginfo_t of signal being delivered
ka
sigaction setting that chose the handler
regs
user register state
stepping
nonzero if debugger single-step or block-step in use
DESCRIPTION
Called by the arch code after a signal handler has been set up. Register and stack state reflects the user handler about to run. Signal
mask changes have already been made.
Called without locks, shortly before returning to user mode (or handling more signals).
Kernel Hackers Manual 2.6. July 2010 TRACEHOOK_SIGNAL_HAN(9)
Check Out this Related Man Page
SIGWAITINFO(2) Linux Programmer's Manual SIGWAITINFO(2)NAME
sigwaitinfo, sigtimedwait - synchronously wait for queued signals
SYNOPSIS
#include <signal.h>
int sigwaitinfo(const sigset_t *set, siginfo_t *info);
int sigtimedwait(const sigset_t *set, siginfo_t *info, const struct timespec timeout);
DESCRIPTION
sigwaitinfo() suspends execution of the calling process until one of the signals in set is delivered. (If one of the signals in set is
already pending for the calling process, sigwaitinfo() will return immediately with information about that signal.)
sigwaitinfo() removes the delivered signal from the calling process's list of pending signals and returns the signal number as its function
result. If the info argument is not NULL, then it returns a structure of type siginfo_t (see sigaction(2)) containing information about
the signal.
Signals returned via sigwaitinfo() are delivered in the usual order; see signal(7) for further details.
sigtimedwait() operates in exactly the same way as sigwaitinfo() except that it has an additional argument, timeout, which enables an upper
bound to be placed on the time for which the process is suspended. This argument is of the following type:
struct timespec {
long tv_sec; /* seconds */
long tv_nsec; /* nanoseconds */
}
If both fields of this structure are specified as 0, a poll is performed: sigtimedwait() returns immediately, either with information about
a signal that was pending for the caller, or with an error if none of the signals in set was pending.
RETURN VALUE
On success, both sigwaitinfo() and sigtimedwait() return a signal number (i.e., a value greater than zero). On failure both calls return
-1, with errno set to indicate the error.
ERRORS
EAGAIN No signal in set was delivered within the timeout period specified to sigtimedwait().
EINVAL timeout was invalid.
EINTR The wait was interrupted by a signal handler. (This handler was for a signal other than one of those in set.)
NOTES
In normal usage, the caller blocks the signals in set via a prior call to sigprocmask() (so that the default disposition for these signals
does not occur if they are delivered between successive calls to sigwaitinfo()or sigtimedwait()) and does not establish handlers for these
signals.
POSIX leaves the meaning of a NULL value for the timeout argument of sigtimedwait() unspecified, permitting the possibility that this has
the same meaning as a call to sigwaitinfo(), and indeed this is what is done on Linux.
CONFORMING TO
POSIX 1003.1-2001
SEE ALSO kill(2), sigaction(2), signal(2), sigpending(2), sigprocmask(2), sigqueue(2), signal(7), sigsetops(3)Linux 2.4.18 2002-06-07 SIGWAITINFO(2)
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)