получить запись файла группы (get group file entry)
Имя (Name)
fgetgrent - get group file entry
Синопсис (Synopsis)
#include <stdio.h>
#include <sys/types.h>
#include <grp.h>
struct group *fgetgrent(FILE *stream);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
fgetgrent():
Since glibc 2.19:
_DEFAULT_SOURCE
Glibc 2.19 and earlier:
_SVID_SOURCE
Описание (Description)
The fgetgrent() function returns a pointer to a structure
containing the group information from the file referred to by
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/group (see group(5)).
The group structure is defined in <grp.h> as follows:
struct group {
char *gr_name; /* group name */
char *gr_passwd; /* group password */
gid_t gr_gid; /* group ID */
char **gr_mem; /* NULL-terminated array of pointers
to names of group members */
};
Возвращаемое значение (Return value)
The fgetgrent() function returns a pointer to a group 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.
Ошибки (Error)
ENOMEM Insufficient memory to allocate group structure.
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌─────────────────────┬───────────────┬──────────────────────────┐
│Interface │ Attribute │ Value │
├─────────────────────┼───────────────┼──────────────────────────┤
│fgetgrent() │ Thread safety │ MT-Unsafe race:fgetgrent │
└─────────────────────┴───────────────┴──────────────────────────┘
Стандарты (Conforming to)
SVr4.
Смотри также (See also)
endgrent(3), fgetgrent_r(3), fopen(3), getgrent(3), getgrgid(3),
getgrnam(3), putgrent(3), setgrent(3), group(5)
