fgetpwent - get password file entry
Standard C library (libc
, -lc
)
#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
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 */
};
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.
Insufficient memory to allocate passwd
structure.
/etc/passwd
password database file
For an explanation of the terms used in this section, see attributes(7).
Interface | Attribute | Value |
Thread safety | MT-Unsafe race:fgetpwent |
None.
SVr4.