debian man page for cr_cansee

Query: cr_cansee

OS: debian

Section: 9

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

CR_CANSEE(9)						   BSD Kernel Developer's Manual					      CR_CANSEE(9)

NAME
cr_cansee -- determine visibility of objects given their user credentials
SYNOPSIS
#include <sys/param.h> #include <sys/systm.h> #include <sys/ucred.h> int cr_cansee(struct ucred *u1, struct ucred *u2);
DESCRIPTION
This function determines the visibility of objects in the kernel based on the real user IDs and group IDs in the credentials u1 and u2 asso- ciated with them. The visibility of objects is influenced by the sysctl(8) variables security.bsd.see_other_gids and security.bsd.see_other_uids, as per the description in cr_seeothergids(9) and cr_seeotheruids(9) respectively.
RETURN VALUES
This function returns zero if the object with credential u1 can ``see'' the object with credential u2, or ESRCH otherwise.
ERRORS
[ESRCH] The object with credential u1 cannot ``see'' the object with credential u2. [ESRCH] The object with credential u1 has been jailed and the object with credential u2 does not belong to the same jail as u1. [ESRCH] The MAC subsystem denied visibility.
SEE ALSO
cr_seeothergids(9), cr_seeotheruids(9), mac(9), p_cansee(9)
BSD
November 19, 2006 BSD
Related Man Pages
ucred(3perl) - sunos
p_cansee(9) - freebsd
cr_seeothergids(9) - freebsd
cr_cansee(9) - freebsd
cr_seeotheruids(9) - linux
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