mknodat(2) - Linux man page
Name
mknodat - create a special or ordinary file relative to a directory file descriptorSynopsis
#include <sys/stat.h> int mknodat(int dirfd, const char *pathname, mode_t modedev_t " dev );
Description
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 mknod(2) for a relative pathname).
If the pathname given in pathname is relative and dirfd is the special value AT_FDCWD, then pathname is interpreted relative to the current working directory of the calling process (like mknod(2)).
If the pathname given in pathname is absolute, then dirfd is ignored.
Return Value
On success, mknodat() returns 0. On error, -1 is returned and errno is set to indicate the error.Errors
The same errors that occur for mknod(2) can also occur for mknodat(). The following additional errors can occur for mknodat():- 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.
