Skip site navigation (1)Skip section navigation (2)

FreeBSD Man Pages

Man Page or Keyword Search:
Man Architecture
Apropos Keyword Search (all sections) Output format
home | help
P_CANSEE(9)	       FreeBSD Kernel Developer's Manual	   P_CANSEE(9)

NAME
     p_cansee -- determine visibility of a process

SYNOPSIS
     #include <sys/param.h>
     #include <sys/proc.h>

     int
     p_cansee(struct thread *td, struct	proc *p);

DESCRIPTION
     This function can be used to determine if a given process p is visible to
     the thread	td, where the notion of	``visibility'' may be read as
     ``awareness of existence''.

     The function is implemented using cr_cansee(9), and the dependencies on
     sysctl(8) variables documented in the cr_cansee(9)	manual page apply.

RETURN VALUES
     The p_cansee() function returns 0 if the process denoted by p is visible
     by	thread td, or a	non-zero error return value otherwise.

ERRORS
     [ESRCH]		Process	p is not visible to thread td as determined by
			cr_cansee(9).

     [ESRCH]		Thread td has been jailed and process p	does not
			belong to the same jail	as td.

     [ESRCH]		The MAC	subsystem denied visibility.

SEE ALSO
     jail(2), sysctl(8), cr_cansee(9), mac(9), p_candebug(9), prison_check(9)

FreeBSD	9.3		       November	19, 2006		   FreeBSD 9.3

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO

Want to link to this manual page? Use this URL:
<http://www.freebsd.org/cgi/man.cgi?query=p_cansee&sektion=9&manpath=FreeBSD+10.0-RELEASE>

home | help