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.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
.\"
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
.\" permission notice identical to this one
.\"
.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date. The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein. The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" References consulted:
.\" Linux libc source code
.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
.\" 386BSD man pages
.\" Modified Sat Jul 24 19:23:25 1993 by Rik Faith (faith@cs.unc.edu)
.\" Translated into german by Martin Schulze (joey@finlandia.infodrom.north.de)
.\"
.TH GETPW 3 "27. Mai 1996" "GNU" "Bibliotheksfunktionen"
.SH BEZEICHNUNG
getpw \- Re-konstruiere eine Pawortdateieintrag
.SH "BERSICHT"
.B #include <pwd.h>
.B #include <sys/types.h>
.sp
.BI "int getpw(uid_t " uid ", char *" buf );
.fi
.SH BESCHREIBUNG
Die Funktion
.B getpw()
re-konstruiert eine Zeile in der Pawortdatei im Puffer
.I buf
fr die angegebene
User ID
.IR uid .
Der zurckgegebene Puffer enthlt eine Zeile mit folgendem Format:
.sp
.RS
.B name:passwd:uid:gid:gecos:dir:shell
.RE
Die Struktur
.I passwd
ist in
.I <pwd.h>
wie folgt definiert:
.sp
.RS
.nf
.ta 8n 16n 32n
struct passwd {
char *pw_name; /* Benutzername */
char *pw_passwd; /* Pawort */
uid_t pw_uid; /* User ID */
gid_t pw_gid; /* Group ID */
char *pw_gecos; /* Name bzw. GECOS */
char *pw_dir; /* Home-Verzeichnis */
char *pw_shell; /* Loginshell */
};
.ta
.fi
.RE
.SH "RCKGABEWERT"
Die Funktion
.B getpw()
gibt bei Erfolg 0 zurck und \-1, wenn ein Fehler aufgetreten ist.
.SH FEHLER
.TP
.B ENOMEM
Es ist nicht ausreichend Speicher vorhanden, um Speicher fr eine
.IR passwd \-Struktur
zu alloziieren.
.SH DATEIEN
.TP
.I /etc/passwd
Pawortdatenbank
.SH "SIEHE AUCH"
.BR fgetpwent (3),
.BR getpwent (3),
.BR setpwent (3),
.BR endpwent (3),
.BR getpwnam (3),
.BR getpwuid (3),
.BR putpwent (3),
.BR passwd (5).
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