isfdtype(3) Library Functions Manual isfdtype(3)
NAME
isfdtype - Tests a file descriptor for a specific file type
LIBRARY
Standard C Library: (libc.so, libc.a)
SYNOPSIS
#include <sys/stat.h>
int isfdtype ( int filedes, int fd_type);
STANDARDS
The isfdtype function supports POSIX.1g Draft 6.6.
Refer to the standards(5) reference page for more information about industry standards and associated tags.
PARAMETERS
Specifies the file descriptor to be tested. Specifies the file type to test for. Valid file types are defined in the <sys/mode.h> include
file.
DESCRIPTION
The isfdtype() function tests whether a file descriptor has a specific file type.
RETURN VALUES
Upon successful completion, the isfdtype() function returns a 1 if the file descriptor has the specific file type or a 0 (zero) if it does
not. If the isfdtype() function fails, a value of -1 is returned and errno is set to indicate the error.
ERRORS
If the isfdtype() function fails, errno may be set to the following value: The filedes parameter is not a valid file descriptor.
RELATED INFORMATION
Functions: socket(2), stat(2), isatty(3).
Standards: standards(5). delim off
isfdtype(3)
