| | 1 | .\" $NetBSD: getuid.2,v 1.6 1995/02/27 12:33:37 cgd Exp $ |
| | 2 | .\" |
| | 3 | .\" Copyright (c) 1980, 1991, 1993 |
| | 4 | .\" The Regents of the University of California. All rights reserved. |
| | 5 | .\" |
| | 6 | .\" Redistribution and use in source and binary forms, with or without |
| | 7 | .\" modification, are permitted provided that the following conditions |
| | 8 | .\" are met: |
| | 9 | .\" 1. Redistributions of source code must retain the above copyright |
| | 10 | .\" notice, this list of conditions and the following disclaimer. |
| | 11 | .\" 2. Redistributions in binary form must reproduce the above copyright |
| | 12 | .\" notice, this list of conditions and the following disclaimer in the |
| | 13 | .\" documentation and/or other materials provided with the distribution. |
| | 14 | .\" 3. All advertising materials mentioning features or use of this software |
| | 15 | .\" must display the following acknowledgement: |
| | 16 | .\" This product includes software developed by the University of |
| | 17 | .\" California, Berkeley and its contributors. |
| | 18 | .\" 4. Neither the name of the University nor the names of its contributors |
| | 19 | .\" may be used to endorse or promote products derived from this software |
| | 20 | .\" without specific prior written permission. |
| | 21 | .\" |
| | 22 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| | 23 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 24 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 25 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| | 26 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| | 27 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| | 29 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| | 30 | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| | 31 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| | 32 | .\" SUCH DAMAGE. |
| | 33 | .\" |
| | 34 | .\" @(#)getuid.2 8.1 (Berkeley) 6/4/93 |
| | 35 | .\" |
| | 36 | .Dd June 4, 1993 |
| | 37 | .Dt GETUID 2 |
| | 38 | .Os BSD 4 |
| | 39 | .Sh NAME |
| | 40 | .Nm geteuid , |
| | 41 | .Nm getuid |
| | 42 | .Nd get user identification |
| | 43 | .Sh SYNOPSIS |
| | 44 | .Fd #include <unistd.h> |
| | 45 | .Ft uid_t |
| | 46 | .Fo geteuid |
| | 47 | .Fa void |
| | 48 | .Fc |
| | 49 | .Ft uid_t |
| | 50 | .Fo getuid |
| | 51 | .Fa void |
| | 52 | .Fc |
| | 53 | .Sh DESCRIPTION |
| | 54 | The |
| | 55 | .Fn getuid |
| | 56 | function returns the real user ID of the calling process. |
| | 57 | The |
| | 58 | .Fn geteuid |
| | 59 | function |
| | 60 | returns the effective user ID of the calling process. |
| | 61 | .Pp |
| | 62 | The real user ID is that of the user who has invoked the program. |
| | 63 | As the effective user ID |
| | 64 | gives the process additional permissions during |
| | 65 | execution of |
| | 66 | .Dq Em set-user-ID |
| | 67 | mode processes, |
| | 68 | .Fn getuid |
| | 69 | is used to determine the real-user-id of the calling process. |
| | 70 | .Sh ERRORS |
| | 71 | The |
| | 72 | .Fn getuid |
| | 73 | and |
| | 74 | .Fn geteuid |
| | 75 | functions are always successful, and no return value is reserved to |
| | 76 | indicate an error. |
| | 77 | .Sh LEGACY SYNOPSIS |
| | 78 | .Fd #include <sys/types.h> |
| | 79 | .Fd #include <unistd.h> |
| | 80 | .Pp |
| | 81 | The include file |
| | 82 | .In sys/types.h |
| | 83 | is necessary for both functions. |
| | 84 | .Sh SEE ALSO |
| | 85 | .Xr getgid 2 , |
| | 86 | .Xr setreuid 2 , |
| | 87 | .Xr compat 5 |
| | 88 | .Sh STANDARDS |
| | 89 | .Fn Geteuid |
| | 90 | and |
| | 91 | .Fn getuid |
| | 92 | functions conform to |
| | 93 | .St -p1003.1-88 . |
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