FGETPWENT
Section: Linux Programmer's Manual (3)
Updated: 2017-09-15
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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
| 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),
getpwnam(3),
getpwuid(3),
putpwent(3),
setpwent(3),
passwd(5)
COLOPHON
This page is part of release 4.13 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/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- FILES
-
- CONFORMING TO
-
- SEE ALSO
-
- COLOPHON
-
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