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GETGID (2) | System calls | Unix Manual Pages | :man

NAME

getgid, getegid - get group process identification

CONTENTS

Library
Synopsis
Description
Errors
See Also
Standards

LIBRARY


.Lb libc

SYNOPSIS


.In sys/types.h
.In unistd.h gid_t getgid void gid_t getegid void

DESCRIPTION

The getgid system call returns the real group ID of the calling process, getegid returns the effective group ID of the calling process.

The real group ID is specified at login time.

The real group ID is the group of the user who invoked the program. As the effective group ID gives the process additional permissions during the execution of "set-group-ID" mode processes, getgid is used to determine the real-user-id of the calling process.

ERRORS

The getgid and getegid system calls are always successful, and no return value is reserved to indicate an error.

SEE ALSO

getuid(2), issetugid(2), setgid(2), setregid(2)

STANDARDS


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