Mac Developer Library Developer
Search

 

This manual page is part of Xcode Tools version 5.0

To obtain these tools:

If you are running a version of Xcode Tools other than 5.0, view the documentation locally:

  • In Xcode

  • In Terminal, using the man(1) command

Reading manual pages

Manual pages are intended as a quick reference for people who already understand a technology.

  • To learn how the manual is organized or to learn about command syntax, read the manual page for manpages(5).

  • For more information about this technology, look for other documentation in the Apple Developer Library.

  • For general information about writing shell scripts, read Shell Scripting Primer.




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.

     Use of setgroups() is highly discouraged.

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     September 15, 2010     4.2 Berkeley Distribution

Reporting Problems

The way to report a problem with this manual page depends on the type of problem:

Content errors
Report errors in the content of this documentation with the feedback links below.
Bug reports
Report bugs in the functionality of the described tool or API through Bug Reporter.
Formatting problems
Report formatting mistakes in the online version of these pages with the feedback links below.

Feedback