seteuid(2)                        SDK R4.11                       seteuid(2)


NAME
       seteuid - set the effective user id of the current process

SYNOPSIS
       #include <sys/types.h>
       pidt seteuid(gidt euid);

   where:
       euid   An effective user identifier

DESCRIPTION
       If the calling process has appropriate privilege, effective-user-id
       is set to euid.

       If the calling process does not have appropriate privilege, but its
       real-user-id or its effective-user-id or its saved-user-id is equal
       to euid, the effective-user-id is set to euid.

       For systems supporting the DG/UX Capability Option, appropriate
       privilege is defined as having one or more specific capabilities
       enabled in the effective capability set of the calling process.  See
       capdefaults(5) for the default capability for this system call.

       On systems without the DG/UX Capability Option, appropriate privilege
       means that the process has an effective UID of root.  See the
       appropriateprivilege(5) man page for more information.

ACCESS CONTROL
       See the description above.

RETURN VALUE
       Upon successful completion, the function seteuid returns zero.
       Otherwise, it returns -1 and sets errno to indicate an error.

DIAGNOSTICS
       Under the following conditions, the function seteuid fails and sets
       errno to:

       EPERM     An attempt was made to set the effective-user-id to a value
                 not permitted by the access control restrictions described
                 above.

       EINVAL    The supplied value of euid was negative or greater than the
                 maximum allowable user id.

SEE ALSO
       getuid(2), geteuid(2), getgid(2), setuid(2), setgid(2),  setregid(2),
       setreuid(2) appropriateprivilege(5).
       capdefaults(5).


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