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OpenDarwin 7.2.1 - man page for setgroups (opendarwin section 2)

SETGROUPS(2)				       BSD System Calls Manual					 SETGROUPS(2)

NAME
setgroups -- set group access list
SYNOPSIS
#include <sys/param.h> #include <unistd.h> int setgroups(int ngroups, const gid_t *gidset);
DESCRIPTION
Setgroups() sets the group access list of the current user process according to the array gidset. The parameter ngroups indicates the number of entries in the array and must be no more than {NGROUPS_MAX}. Only the super-user may set new groups.
RETURN VALUES
A 0 value is returned on success, -1 on error, with an error code stored in errno.
ERRORS
The setgroups() call will fail if: [EINVAL] The value of ngroups is greater than {NGROUPS_MAX}. [EPERM] The caller is not the super-user. [EFAULT] The address specified for gidset is outside the process address space.
SEE ALSO
getgroups(2), initgroups(3)
HISTORY
The setgroups() function call appeared in 4.2BSD. 4.2 Berkeley Distribution April 16, 1994 4.2 Berkeley Distribution


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