/etc/passwd
password database file
fgetpwent3
Get password file entry
Usage
#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
Library
Standard C library (libc, -lc)
Overview
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
Attributes
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
| fgetpwent() | Thread safety | MT-Unsafe race:fgetpwent |
Releases
19 releases since Debian 1.1 (Buzz); the text changed 14 times.