Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
setreuid(2)							   setreuid(2)

Name
       setreuid	- set real and effective user ID's

Syntax
       setreuid(ruid, euid)
       intruid,	euid;

Description
       The real	and effective user ID's	of the current process are set accord-
       ing to the arguments.  If ruid or euid is -1, the current uid is	filled
       in by the system.

Return Values
       Upon  successful	 completion,  a	value of zero (0) is returned.	Other-
       wise, a value of	-1 is returned and errno is set	to indicate the	error.

Environment
       BSD
       If  the process is superuser, or	and matches with the real user ID, the
       effective user ID, or the saved set-user-id (as described  in  ),  then
       the  real,  effective, and the saved set-user-id	are set	to and respec-
       tively.

       POSIX
       SYSTEM-FIVE
       When your program is compiled in	the POSIX or SYSTEM-FIVE mode, if both
       arguments to are	-1, the	system call returns a value of -1 and errno is
       set to [EINVAL].

       The following semantics apply when using	the function:

       If the process is the superuser,	the real, effective,  and  saved  set-
       user-id (as described in	) are set to and respectively.

       If  the process is not the superuser, but the and matches with the real
       user ID,	the effective user ID (only in the SYSTEM-FIVE and  BSD	 envi-
       ronments),  or  the  saved set-user-id, then the	effective ID is	set to
       The  real user ID and the saved set-user-id are left unchanged.

Diagnostics
       [EPERM]	      The current process is not the  superuser	 and  the  and
		      specified	 does  not  match  with	 the real user ID, the
		      effective	user ID	(only in SYSTEM-FIVE and BSD  environ-
		      ment), or	the saved set-user-id.

See Also
       getuid(2), setregid(2), setuid(3)

								   setreuid(2)

Name | Syntax | Description | Return Values | Environment | Diagnostics | See Also

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=setreuid&sektion=2&manpath=ULTRIX+4.2>

home | help