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GETPWENT   (3) manpage
GETPWENT
3
1996-05-27
GNU
Linux Programmer's Manual
  • NAME
      getpwent, setpwent, endpwent - get password file entry
  • SYNOPSIS 
      
 #include <sys/types.h>
 #include <pwd.h>

 struct passwd *getpwent(void);

 void setpwent(void);

 void endpwent(void);
  • DESCRIPTION
      The getpwent() function returns a pointer to a structure containing the broken out fields of a line from /etc/passwd.  The first time it is called it returns the first entry; thereafter, it returns successive entries.

      The setpwent() function rewinds the file pointer to the beginning of the /etc/passwd file.

      The endpwent() function closes the /etc/passwd file.

      The passwd structure is defined in <pwd.h> as follows: 

      
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 */
};
  • RETURN VALUE
      The getpwent() function returns the passwd structure, or NULL if there are no more entries or an error occurs.
  • ERRORS
      ENOMEM
      Insufficient memory to allocate passwd structure.
  • FILES
      /etc/passwd
      password database file
  • CONFORMING TO
      SVID 3, BSD 4.3
  • SEE ALSO
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