.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
.\" May be distributed under the GNU General Public License
.\" 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)
.TH GETPW 3  "April 9, 1993" "GNU" "Linux Programmer's Manual"
.SH NAME
getpw \- Re-construct password line entry
.SH SYNOPSIS
.nf
.B #include <pwd.h>
.B #include <sys/types.h>
.sp
.BI "int getpw(uid_t " uid ", char *" buf );
.fi
.SH DESCRIPTION
The \fBgetpw()\fP function re-constructs the password line entry for
the given user uid \fIuid\fP in the buffer \fIbuf\fP.  The returned
buffer contains a line of format
.sp
.RS
.B name:passwd:uid:gid:gecos:dir:shell
.RE
.PP
The \fIpasswd\fP structure is defined in \fI<pwd.h>\fP as follows:
.sp
.RS
.nf
.ta 8n 16n 32n
struct passwd {
        char    *pw_name;		/* user name */
        char    *pw_passwd;		/* user password */
        uid_t   pw_uid;			/* user id */
        gid_t   pw_gid;			/* group id */
        char    *pw_gecos;      	/* real name */
        char    *pw_dir;  		/* home directory */
        char    *pw_shell;      	/* shell program */
};
.ta
.fi
.RE
.SH "RETURN VALUE"
The \fBgetpw()\fP function returns 0 on success, or -1 if an error
occurs.
.SH ERRORS
.TP
.B ENOMEM
Insufficient memory to allocate passwd structure.
.SH FILES
.nf
/etc/passwd		password database file
.fi
.SH SEE ALSO
.BR fgetpwent "(3), " getpwent "(3), " setpwent "(3), " endpwent (3),
.BR getpwnam "(3), " getpwuid "(3), " putpwent (3)