fgetpwent
Section: C Library Functions (3)
Updated: 202-0-08
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NAME
fgetpwent - get password file entry
LIBRARY
Standard C library
(
libc,~
-lc)
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 error.
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 | M-Unsafe race:fgetpwent
|
STANDARDS
None.
HISTORY
SVr4.
SEE ALSO
endpwent(3),
fgetpwent_r(3),
fopen(3),
getpw(3),
getpwent(3),
getpwnam(3),
getpwuid(3),
putpwent(3),
setpwent(3),
passwd(5)
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- FILES
-
- ATTRIBUTES
-
- STANDARDS
-
- HISTORY
-
- SEE ALSO
-
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