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man:fgetpwent

FGETPWENT(3) Linux Programmer's Manual FGETPWENT(3)

NAME

     fgetpwent - get password file entry

SYNOPSIS

     #include <stdio.h>
     #include <sys/types.h>
     #include <pwd.h>
     struct passwd *fgetpwent(FILE *stream);
 Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
     fgetpwent():
         Since glibc 2.19:
             _DEFAULT_SOURCE
         Glibc 2.19 and earlier:
             _SVID_SOURCE

DESCRIPTION

     The  fgetpwent()  function  returns a pointer to a structure containing
     the broken out fields of a line in the file stream.  The first time  it
     is called it returns the first entry; thereafter, it returns successive
     entries.  The file referred to by stream must have the same  format  as
     /etc/passwd (see passwd(5)).
     The passwd structure is defined in <pwd.h> 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  fgetpwent()  function  returns a pointer to a passwd structure, or
     NULL if there are no more entries or an error occurs.  In the event  of
     an error, errno is set to indicate the cause.

ERRORS

     ENOMEM Insufficient memory to allocate passwd structure.

FILES

     /etc/passwd
            password database file

ATTRIBUTES

     For   an   explanation   of   the  terms  used  in  this  section,  see
     attributes(7).
     +------------+---------------+--------------------------+
     |Interface   | Attribute     | Value                    |
     +------------+---------------+--------------------------+
     |fgetpwent() | Thread safety | MT-Unsafe race:fgetpwent |
     +------------+---------------+--------------------------+

CONFORMING TO

     SVr4.

SEE ALSO

     endpwent(3), fgetpwent_r(3), fopen(3),  getpw(3),  getpwent(3),  getpw-
     nam(3), getpwuid(3), putpwent(3), setpwent(3), passwd(5)

COLOPHON

     This  page  is  part of release 4.16 of the Linux man-pages project.  A
     description of the project, information about reporting bugs,  and  the
     latest     version     of     this    page,    can    be    found    at
     https://www.kernel.org/doc/man-pages/.

GNU 2018-02-02 FGETPWENT(3)

/data/webs/external/dokuwiki/data/pages/man/fgetpwent.txt · Last modified: 2019/05/17 09:47 by 127.0.0.1

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