MKFIFO(2) | System Calls Manual | MKFIFO(2) |
mkfifo
, mkfifoat
—
#include <sys/stat.h>
int
mkfifo
(const
char *path, mode_t
mode);
#include
<sys/stat.h>
#include <fcntl.h>
int
mkfifoat
(int
fd, const char
*path, mode_t
mode);
mkfifo
() creates a new fifo file with name
path. The access permissions are specified by
mode and restricted by the
umask(2) of the calling process.
mkfifoat
() works the same way as
mkfifo
() except if path is
relative. In that case, it is looked up from a directory whose file
descriptor was passed as fd. Search permission is
required on this directory. fd can be set to
AT_FDCWD
in order to specify the current
directory.
The fifo's owner ID is set to the process's effective user ID. The fifo's group ID is set to that of the parent directory in which it is created.
mkfifo
() and mkfifoat
()
functions return the value 0 if successful; otherwise the
value -1 is returned and the global variable
errno is set to indicate the error.
mkfifo
() and mkfifoat
() will
fail and no fifo will be created if:
EACCES
]EDQUOT
]EEXIST
]EFAULT
]EIO
]ELOOP
]ENAMETOOLONG
]NAME_MAX
}
characters, or an entire path name exceeded
{PATH_MAX
} characters.ENOENT
]ENOSPC
]ENOTDIR
]EOPNOTSUPP
]EROFS
]In addition, mkfifoat
() will fail if:
mkfifo
function call conforms to
IEEE Std 1003.1-1990 (“POSIX.1”).
mkfifoat
() conforms to IEEE Std
1003.1-2008 (“POSIX.1”).
July 29, 2013 | NetBSD 9.0 |