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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 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 │ 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)
GNU 2021-03-22 FGETPWENT(3)