NAME
mkfifoat - make a FIFO (named pipe) relative to a directory file descriptor SYNOPSIS
#include
/* Definition of AT* constants */ #include
int mkfifoat(int dirfd, const char *pathname, modet mode); Feature Test Macro Requirements for glibc (see featuretestmacros(7)): mkfifoat(): Since glibc 2.10: XOPENSOURCE >= 700 || POSIXCSOURCE >= 200809L Before glibc 2.10: ATFILESOURCE DESCRIPTION The mkfifoat() system call operates in exactly the same way as mkfifo(3), except for the differences described in this manual page. If the pathname given in pathname is relative, then it is interpreted relative to the directory referred to by the file descriptor dirfd (rather than relative to the current working directory of the calling process, as is done by mkfifo(3) for a relative pathname). If pathname is relative and dirfd is the special value ATFDCWD, then pathname is interpreted relative to the current working directory of the calling process (like mkfifo(3)). If pathname is absolute, then dirfd is ignored. RETURN VALUE On success, mkfifoat() returns 0. On error, -1 is returned and errno is set to indicate the error. ERRORS The same errors that occur for mkfifo(3) can also occur for mkfifoat(). The following additional errors can occur for mkfifoat(): EBADF dirfd is not a valid file descriptor. ENOTDIR pathname is a relative path and dirfd is a file descriptor referring to a file other than a directory. VERSIONS mkfifoat() was added to glibc in version 2.4. It is implemented using mknod(2), available on Linux since kernel 2.6.16. CONFORMING TO
POSIX.1-2008. NOTES See openat(2) for an explanation of the need for mkfifoat(). SEE ALSO openat(2), mkfifo(3), pathresolution(7) COLOPHON
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Linux 2009-12-13 MKFIFOAT(3)