04-17-2011
system calls in C
Hello,
how would i be able to call ps in C programming?
thanks,
---------- Post updated at 01:39 AM ---------- Previous update was at 01:31 AM ----------
here's the complete system call, ps -o pid -p %d, getpit()
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LEARN ABOUT DEBIAN
explain_wait4_or_die
explain_wait4_or_die(3) Library Functions Manual explain_wait4_or_die(3)
NAME
explain_wait4_or_die - wait for process to change state and report errors
SYNOPSIS
#include <libexplain/wait4.h>
void explain_wait4_or_die(int pid, int *status, int options, struct rusage *rusage);
DESCRIPTION
The explain_wait4_or_die function is used to call the wait4(2) system call. On failure an explanation will be printed to stderr, obtained
from explain_wait4(3), and then the process terminates by calling exit(EXIT_FAILURE).
This function is intended to be used in a fashion similar to the following example:
explain_wait4_or_die(pid, status, options, rusage);
pid The pid, exactly as to be passed to the wait4(2) system call.
status The status, exactly as to be passed to the wait4(2) system call.
options The options, exactly as to be passed to the wait4(2) system call.
rusage The rusage, exactly as to be passed to the wait4(2) system call.
Returns:
This function only returns on success, see wait4(2) for more information. On failure, prints an explanation and exits.
SEE ALSO
wait4(2)
wait for process to change state
explain_wait4(3)
explain wait4(2) errors
exit(2) terminate the calling process
COPYRIGHT
libexplain version 0.52
Copyright (C) 2008 Peter Miller
explain_wait4_or_die(3)