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Man Pages


Manual Reference Pages  -  CR_SEEOTHERUIDS (9)

NAME

cr_seeotheruids - determine visibility of objects given their user credentials

CONTENTS

Synopsis
Description
Sysctl Variables
Return Values
See Also

SYNOPSIS

int cr_seeotheruids struct ucred *u1 struct ucred *u2

DESCRIPTION

This function determines the visibility of objects in the kernel based on the real user IDs in the credentials u1 and u2 associated with them.

The visibility of objects is influenced by the sysctl(8) variable security.bsd.see_other_uids. If this variable is non-zero then all objects in the kernel are visible to each other irrespective of their user IDs. If this variable is zero then the object with credentials u2 is visible to the object with credentials u1 if either u1 is the super-user credential, or if u1 and u2 have the same real user ID.

SYSCTL VARIABLES

security.bsd.see_other_uids
  Must be non-zero if objects with unprivileged credentials are to be able to see each other.

RETURN VALUES

This function returns zero if the object with credential u1 can "see" the object with credential u2, or ESRCH otherwise.

SEE ALSO

cr_seeothergids(9), p_candebug(9)
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