GETPW(3)		   Linux Programmers Manual		     GETPW(3)



NAME
       getpw - Re-construct password line entry

SYNOPSIS
       #define _GNU_SOURCE
       #include 
       #include 

       int getpw(uid_t uid, char *buf);

DESCRIPTION
       The  getpw()  function  re-constructs  the  password line entry for the
       given user ID uid in the buffer buf.  The returned  buffer  contains  a
       line of format

	      name:passwd:uid:gid:gecos:dir:shell

       The passwd structure is defined in  as follows:

	   struct passwd {
	       char   *pw_name;       /* username */
	       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 */
	   };

RETURN VALUE
       The getpw() function returns 0 on success; on error, it returns -1, and
       errno is set to indicate the error.

ERRORS
       EINVAL buf is NULL.

       ENOENT No user corresponding to uid.

       ENOMEM Insufficient memory to allocate passwd structure.

FILES
       /etc/passwd
	      password database file

CONFORMING TO
       SVr2.

BUGS
       The getpw() function is dangerous  as  it  may  overflow  the  provided
       buffer buf.  It is obsoleted by getpwuid(3).

SEE ALSO
       endpwent(3), fgetpwent(3), getpwent(3), getpwnam(3), getpwuid(3), putp
       went(3), setpwent(3), passwd(5)

COLOPHON
       This page is part of release 3.05 of the Linux  man-pages  project.   A
       description  of	the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.



GNU				  2007-12-12			      GETPW(3)