help with C programme to lock remote resources

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Testing privileges -lock lockfile /var/lock/subsys/..- Permission denied

Hi all, I have to test some user priviliges. The goal is to be sure that an unauthorized user can't restart some modules (ssh, mysql etc...). I'm trying to automate it with a shell script but in same cases I got the syslog broadcast message. Is there any way to simply get a return code...

2. Shell Programming and Scripting

programme is ok but not working in script

hi buddies; i have a very strange problem. i made a script composed of just 5 line. it is containing awk and nawk codes and it is working perfectly when it is applied one-by-one (copy & paste). but when i type run myscript.mos, it is giving: nawk: syntax error at source line 1 context is...

3. Red Hat

Security Question: Lock after invalid login, Session Lock and Required Minimum Password Length

Hello all, If anyone has time, I have a few questions: How do I do the following in Linux. We are using Red Hat and Oracle Enterprise Linux, which is based on Red Hat too. 1. How to lock the account after a few (like 3) invalid password attempts? 2. How do you lock a screen after 30...

4. Programming

Help for coding this programme

for a floating-point array x whose size is n, find the geometric mean.. GM =n x1.x2.x3...xn

5. Programming

starting programme in C

hello, For school i make the next mission: give how many chambers in a constant number. use an array which chamber is free and count how many chamber there are free. make also something to test I don't now how to start. I need an well example so i can make the mission thank you

6. Programming

cobol programme

I have some compile programme .crn now I want to run .crn programme on express cobol which allow only *.gnt programme any solution to run *.crn programme

7. Shell Programming and Scripting

snmpget in a perl programme

Hi Guyz can u tell me how to write a programme in perl using snmpget. Regards' Harrr

8. Programming

Need help in a c programme

Dear Friends, I ve two text files like re_im.dat 13.7663000000 5.9572200000 10.2682000000 10.9345000000 5.0810700000 14.1132000000 two real values per row Sarf.dat 127 128 128 128 71 0 128 128 128 128 71 0 128 128 128 128 71 0 This is having 6...

9. Shell Programming and Scripting

want to use output of c programme in expect

hi i am having a c code which gives the output of my password in text format i.e when i run my c code which which gives the password asfollows====>>>>>> $./passwdprogram ======>>>>>>abc@123(this is the output) now i have an expect script to remotely ssh which uses the password set in ...

10. UNIX for Dummies Questions & Answers

how to lock keyboard without using lock command

how can I lock my keyboard while I'm away from the computer without using lock command. What other commands gives me the option to lock keyboard device? thanks

LEARN ABOUT FREEBSD

pthread_spin_destroy

PTHREAD_SPIN_INIT(3)					   BSD Library Functions Manual 				      PTHREAD_SPIN_INIT(3)

NAME

     pthread_spin_init, pthread_spin_destroy -- initialize or destroy a spin lock

LIBRARY

     POSIX Threads Library (libpthread, -lpthread)

SYNOPSIS

     #include <pthread.h>

     int
     pthread_spin_init(pthread_spinlock_t *lock, int pshared);

     int
     pthread_spin_destroy(pthread_spinlock_t *lock);

DESCRIPTION

     The pthread_spin_init() function will initialize lock to an unlocked state and allocate any resources necessary to begin using it.  If
     pshared is set to PTHREAD_PROCESS_SHARED, any thread, whether belonging to the process in which the spinlock was created or not, that has
     access to the memory area where lock resides, can use lock.  If it is set to PTHREAD_PROCESS_PRIVATE, it can only be used by threads within
     the same process.

     The pthread_spin_destroy() function will destroy lock and release any resources that may have been allocated on its behalf.

RETURN VALUES

     If successful, both pthread_spin_init() and pthread_spin_destroy() will return zero.  Otherwise, an error number will be returned to indicate
     the error.

     Neither of these functions will return EINTR.

ERRORS

     The pthread_spin_init() and pthread_spin_destroy() functions will fail if:

     [EBUSY]		An attempt to initialize or destroy lock while it is in use.

     [EINVAL]		The value specified by lock is invalid.

     The pthread_spin_init() function will fail if:

     [EAGAIN]		Insufficient resources, other than memory, to initialize lock.

     [ENOMEM]		Insufficient memory to initialize lock.

SEE ALSO

     pthread_spin_lock(3), pthread_spin_unlock(3)

HISTORY

     The pthread_spin_init() and pthread_spin_destroy() functions first appeared in N:M Threading Library (libkse, -lkse) in FreeBSD 5.2, and in
     1:1 Threading Library (libthr, -lthr) in FreeBSD 5.3.

BUGS

     The implementation of pthread_spin_init() does not fully conform to IEEE Std 1003.2 (``POSIX.2'') because the pshared argument is ignored in
     1:1 Threading Library (libthr, -lthr), and in N:M Threading Library (libkse, -lkse) if any value other than PTHREAD_PROCESSES_PRIVATE is
     specified, it returns EINVAL.

BSD
								 January 22, 2004							       BSD

Programming