initgroups(3C)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | ATTRIBUTES | SUMMARY OF TRUSTED SOLARIS CHANGES | SEE ALSO

NAME

initgroups- Initialize the supplementary group access list

SYNOPSIS

#include <grp.h>
#include <sys/types.h>

int initgroups(const char *name, gid_t basegid);

DESCRIPTION

The initgroups() function reads the group database to get the group membership for the user specified by name, and initializes the supplementary group access list of the calling process (see getgrnam(3C) and getgroups(2)). The basegid group ID is also included in the supplementary group access list. This is typically the real group ID from the user database.

While scanning the group database, if the number of groups, including the basegid entry, exceeds NGROUPS_MAX, subsequent group entries are ignored.

RETURN VALUES

initgroups() returns:

0

On success.

-1

On failure, and sets errno to indicate the error.

ERRORS

The initgroups() function will fail and not change the supplementary group access list if:

EPERM

The effective user ID is not superuser.

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
MT-Level	Unsafe

SUMMARY OF TRUSTED SOLARIS CHANGES

To succeed, initgroups() must have PRIV_PROC_SETID in its set of effective privileges.

SEE ALSO

Trusted Solaris 7 Reference Manual

getgroups(2)

SunOS 5.7 Reference Manual

getgrnam(3C), attributes(5)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | ATTRIBUTES | SUMMARY OF TRUSTED SOLARIS CHANGES | SEE ALSO