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Annotation of researchv10no/lbin/mailx/getname.c, revision 1.1.1.1

1.1       root        1: #ident "@(#)getname.c  1.4 'attmail mail(1) command'"
                      2: #ident "@(#)mailx:getname.c    1.3.1.1"
                      3: /*     Copyright (c) 1984 AT&T */
                      4: /*       All Rights Reserved   */
                      5: 
                      6: /*     THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T     */
                      7: /*     The copyright notice above does not evidence any        */
                      8: /*     actual or intended publication of such source code.     */
                      9: 
                     10: /*
                     11:  * mailx -- a modified version of a University of California at Berkeley
                     12:  *     mail program
                     13:  */
                     14: 
                     15: #include "rcv.h"
                     16: #include <pwd.h>
                     17: #ifdef preSVr4
                     18: extern struct passwd *getpwnam();
                     19: extern struct passwd *getpwuid();
                     20: #endif
                     21: 
                     22: /*
                     23:  * Search the passwd file for a uid.  Return name through ref parameter
                     24:  * if found, indicating success with 0 return.  Return -1 on error.
                     25:  * If -1 is passed as the user id, close the passwd file.
                     26:  */
                     27: 
                     28: getname(uid, namebuf)
                     29:        uid_t uid;
                     30:        char namebuf[];
                     31: {
                     32:        struct passwd *pw;
                     33: 
                     34:        if (uid == (uid_t)-1) {
                     35:                endpwent();
                     36:                return(0);
                     37:        }
                     38:        setpwent();
                     39:        pw = getpwuid(uid);
                     40:        if (pw) {
                     41:                strcpy(namebuf, pw->pw_name);
                     42:                return(0);
                     43:        }
                     44:        return(-1);
                     45: }
                     46: 
                     47: /*
                     48:  * Convert the passed name to a user id and return it.  Return -1
                     49:  * on error.  Iff the name passed is 0, close the passwd file.
                     50:  */
                     51: 
                     52: uid_t
                     53: getuserid(name)
                     54:        char name[];
                     55: {
                     56:        struct passwd *pw;
                     57: 
                     58:        if (name == 0) {
                     59:                endpwent();
                     60:                return(0);
                     61:        }
                     62:        setpwent();
                     63:        pw = getpwnam(name);
                     64:        return pw ? pw->pw_uid : (uid_t)-1;
                     65: }

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