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Minix/CD-ROM-2.0/MINIX/MANUALS/CAT2/MKNOD.2

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+MKNOD(2)                  Minix Programmer's Manual                   MKNOD(2)
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+
+NAME
+     mknod, mkfifo - make a special file
+
+SYNOPSIS
+     #include <sys/types.h>
+     #include <unistd.h>
+     #include <sys/stat.h>
+
+     int mknod(const char *path, mode_t mode, dev_t dev)
+     int mkfifo(const char *path, mode_t mode)
+
+DESCRIPTION
+     Mknod creates a new file whose name is path. The mode  of  the  new  file
+     (including  special  file  bits)  is initialized from mode, as defined in
+     <sys/stat.h>.  (The protection part  of  the  mode  is  modified  by  the
+     process's  mode  mask (see umask(2))).  The first block pointer of the i-
+     node is initialized from dev and is used  to  specify  which  device  the
+     special file refers to.
+
+     If mode indicates a block or character special file, dev  is  the  device
+     number  of  a  character  or block I/O device.  The low eight bits of the
+     device number hold the minor device number that selects  a  device  among
+     the  devices  governed by the same driver.  The driver is selected by the
+     major device number, the next eight bits of the device number.
+
+     If mode does not indicate a block special or  character  special  device,
+     dev is ignored.  (For example, when creating a ``fifo'' special file.)
+
+     Mknod may be invoked only by the super-user, unless it is being  used  to
+     create a fifo.
+
+     The call mkfifo(path, mode) is equivalent to
+
+          mknod(path, (mode & 0777) | S_IFIFO, 0)
+
+RETURN VALUE
+     Upon successful completion a value of 0 is returned.  Otherwise, a  value
+     of -1 is returned and errno is set to indicate the error.
+
+ERRORS
+     Mknod will fail and the file mode will be unchanged if:
+
+     [ENOTDIR]      A component of the path prefix is not a directory.
+
+     [ENAMETOOLONG] The path name exceeds PATH_MAX characters.
+
+     [ENOENT]       A component of the path prefix does not exist.
+
+
+
+
+
+4BSD                              May 23, 1986                               1
+
+
+
+MKNOD(2)                  Minix Programmer's Manual                   MKNOD(2)
+
+
+     [EACCES]       Search permission is denied for a component  of  the  path
+                    prefix.
+
+     [ELOOP]        Too many symbolic links were  encountered  in  translating
+                    the pathname.  (Minix-vmd)
+
+     [EPERM]        The process's effective user ID is not super-user.
+
+     [EIO]          An I/O error occurred while making the directory entry  or
+                    allocating the inode.
+
+     [ENOSPC]       The directory in which the entry for the new node is being
+                    placed  cannot  be extended because there is no space left
+                    on the file system containing the directory.
+
+     [ENOSPC]       There are no free inodes on the file system on  which  the
+                    node is being created.
+
+     [EROFS]        The named file resides on a read-only file system.
+
+     [EEXIST]       The named file exists.
+
+     [EFAULT]       Path points outside the process's allocated address space.
+
+SEE ALSO
+     chmod(2), stat(2), umask(2).
+
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+4BSD                              May 23, 1986                               2
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