восстановить запись строки пароля (reconstruct password line entry)
Имя (Name)
getpw - reconstruct password line entry
Синопсис (Synopsis)
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <sys/types.h>
#include <pwd.h>
int getpw(uid_t uid, char *buf);
Описание (Description)
The getpw() function reconstructs the password line entry for the
given user ID uid in the buffer buf. The returned buffer
contains a line of format
name:passwd:uid:gid:gecos:dir:shell
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; /* user information */
char *pw_dir; /* home directory */
char *pw_shell; /* shell program */
};
For more information about the fields of this structure, see
passwd(5).
Возвращаемое значение (Return value)
The getpw() function returns 0 on success; on error, it returns
-1, and errno is set to indicate the error.
If uid is not found in the password database, getpw() returns -1,
sets errno to 0, and leaves buf unchanged.
Ошибки (Error)
0 or ENOENT
No user corresponding to uid.
EINVAL buf is NULL.
ENOMEM Insufficient memory to allocate passwd structure.
Файлы (Files)
/etc/passwd
password database file
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌───────────────────────────────┬───────────────┬────────────────┐
│Interface │ Attribute │ Value │
├───────────────────────────────┼───────────────┼────────────────┤
│getpw() │ Thread safety │ MT-Safe locale │
└───────────────────────────────┴───────────────┴────────────────┘
Стандарты (Conforming to)
SVr2.
Ошибки (баги) (Bugs)
The getpw() function is dangerous as it may overflow the provided
buffer buf. It is obsoleted by getpwuid(3).
Смотри также (See also)
endpwent(3), fgetpwent(3), getpwent(3), getpwnam(3), getpwuid(3),
putpwent(3), setpwent(3), passwd(5)
