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   isfdtype    ( 3 )

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Имя (Name)

isfdtype - test file type of a file descriptor

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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

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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).

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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.

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Ошибки (Error)

The isfdtype() function can fail with any of the same errors as
       fstat(2).

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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.

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Примечание (Note)

Portable applications should use fstat(2) instead.

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Смотри также (See also)

fstat(2)

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