тестовый тип файла файлового дескриптора (test file type of a file descriptor)
Имя (Name)
isfdtype - test file type of a file descriptor
Синопсис (Synopsis)
#include <sys/stat.h>
#include <sys/socket.h>
int isfdtype(int fd, int fdtype);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
isfdtype():
Since glibc 2.20:
_DEFAULT_SOURCE
Before glibc 2.20:
_BSD_SOURCE || _SVID_SOURCE
Описание (Description)
The isfdtype() function tests whether the file descriptor fd
refers to a file of type fdtype. The fdtype argument specifies
one of the S_IF* constants defined in <sys/stat.h> and documented
in stat(2) (e.g., S_IFREG).
Возвращаемое значение (Return value)
The isfdtype() function returns 1 if the file descriptor fd is of
type fdtype and 0 if it is not. On failure, -1 is returned and
errno is set to indicate the error.
Ошибки (Error)
The isfdtype() function can fail with any of the same errors as
fstat(2).
Стандарты (Conforming to)
The isfdtype() function is not specified in any standard, but did
appear in the draft POSIX.1g standard. It is present on OpenBSD
and Tru64 UNIX (where the required header file in both cases is
just <sys/stat.h>, as shown in the POSIX.1g draft), and possibly
other systems.
Примечание (Note)
Portable applications should use fstat(2) instead.
Смотри также (See also)
fstat(2)
