minix man page for seteuid

SETEUID(3P)                                                  POSIX Programmer's Manual                                                 SETEUID(3P)

PROLOG
       This  manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (consult the correspond-
       ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

NAME
       seteuid - set effective user ID

SYNOPSIS
       #include <unistd.h>

       int seteuid(uid_t uid);

DESCRIPTION
       If uid is equal to the real user ID or the saved set-user-ID, or if the process has appropriate privileges, seteuid() shall set the  effec-
       tive user ID of the calling process to uid; the real user ID and saved set-user-ID shall remain unchanged.

       The seteuid() function shall not affect the supplementary group list in any way.

RETURN VALUE
       Upon successful completion, 0 shall be returned; otherwise, -1 shall be returned and errno set to indicate the error.

ERRORS
       The seteuid() function shall fail if:

       EINVAL The value of the uid argument is invalid and is not supported by the implementation.

       EPERM  The process does not have appropriate privileges and uid does not match the real group ID or the saved set-group-ID.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       Refer to the RATIONALE section in setuid().

FUTURE DIRECTIONS
       None.

SEE ALSO
       exec(),  getegid(),  geteuid(),  getgid(),  getuid(), setegid(), setgid(), setregid(), setreuid(), setuid(), the Base Definitions volume of
       IEEE Std 1003.1-2001, <sys/types.h>, <unistd.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
       ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
       Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and  the  original  IEEE
       and  The  Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
       online at http://www.opengroup.org/unix/online.html .

IEEE
/The Open Group                                                    2003                                                            SETEUID(3P)