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setgroups(2)
NAME
  setgroups - Set the group access list

SYNOPSIS
  #include <unistd.h>
  #include <sys/types.h>

  int setgroups(
	  int gidsetsize,
	  gid_t grouplist[] );

PARAMETERS
  gidsetsize
      Indicates the number of entries in the array pointed to by the
      grouplist parameter. This number must not be more than NGROUPS_MAX,
      which is defined in the <sys/syslimits.h> header file.

  grouplist
      Points to the array that contains the group access list of the current
      user process. Element grouplist[0] becomes the new effective group ID.

DESCRIPTION
  The setgroups() function sets the group access list of the current user
  process according to the array pointed to by the grouplist parameter.

  This function fails unless the invoking process has superuser privilege.

RETURN VALUES
  Upon successful completion, a value of 0 (zero) is returned.	If the
  setgroups() function fails, a value of -1 is returned and errno is set to
  indicate the error.

ERRORS
  If the setgroups() function fails, errno may be set to one of the following
  values:

  [EPERM]
      The caller does not have the appropriate system privilege.

  [EINVAL]
      The value of the gidsetsize parameter is greater than NGROUPS_MAX or an
      entry in the grouplist parameter is not a valid group ID.

  [EFAULT]
      The grouplist parameter points outside of the allocated address space
      of the process.

SEE ALSO
  Functions: getgroups(2), initgroups(3)

Index for Section 2

Alphabetical listing for S

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