| /* Create a device file relative to an open directory. Hurd version. |
| Copyright (C) 1991-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <errno.h> |
| #include <sys/stat.h> |
| #include <hurd.h> |
| #include <hurd/fd.h> |
| #include <hurd/paths.h> |
| #include <fcntl.h> |
| #include <_itoa.h> |
| #include <string.h> |
| #include <sys/types.h> |
| #include <sys/sysmacros.h> |
| |
| /* Create a device file named PATH relative to FD, with permission and |
| special bits MODE and device number DEV (which can be constructed |
| from major and minor device numbers with the `makedev' macro |
| above). */ |
| int |
| __xmknodat (int vers, int fd, const char *path, mode_t mode, dev_t *dev) |
| { |
| error_t errnode, err; |
| file_t dir, node; |
| char *name; |
| char buf[100], *bp; |
| const char *translator; |
| size_t len; |
| |
| if (vers != _MKNOD_VER) |
| return __hurd_fail (EINVAL); |
| |
| if (S_ISCHR (mode)) |
| { |
| translator = _HURD_CHRDEV; |
| len = sizeof (_HURD_CHRDEV); |
| } |
| else if (S_ISBLK (mode)) |
| { |
| translator = _HURD_BLKDEV; |
| len = sizeof (_HURD_BLKDEV); |
| } |
| else if (S_ISFIFO (mode)) |
| { |
| translator = _HURD_FIFO; |
| len = sizeof (_HURD_FIFO); |
| } |
| else if (S_ISREG (mode)) |
| { |
| translator = NULL; |
| len = 0; |
| } |
| else |
| { |
| errno = EINVAL; |
| return -1; |
| } |
| |
| if (translator != NULL && ! S_ISFIFO (mode)) |
| { |
| /* We set the translator to "ifmt\0major\0minor\0", where IFMT |
| depends on the S_IFMT bits of our MODE argument, and MAJOR and |
| MINOR are ASCII decimal (octal or hex would do as well) |
| representations of our arguments. Thus the convention is that |
| CHRDEV and BLKDEV translators are invoked with two non-switch |
| arguments, giving the major and minor device numbers in %i format. */ |
| |
| bp = buf + sizeof (buf); |
| *--bp = '\0'; |
| bp = _itoa (__gnu_dev_minor (*dev), bp, 10, 0); |
| *--bp = '\0'; |
| bp = _itoa (__gnu_dev_major (*dev), bp, 10, 0); |
| memcpy (bp - len, translator, len); |
| translator = bp - len; |
| len = buf + sizeof (buf) - translator; |
| } |
| |
| dir = __file_name_split_at (fd, path, &name); |
| if (dir == MACH_PORT_NULL) |
| return -1; |
| |
| /* Create a new, unlinked node in the target directory. */ |
| errnode = err = __dir_mkfile (dir, O_WRITE, (mode & ~S_IFMT) & ~_hurd_umask, &node); |
| |
| if (! err && translator != NULL) |
| /* Set the node's translator to make it a device. */ |
| err = __file_set_translator (node, |
| FS_TRANS_EXCL | FS_TRANS_SET, |
| FS_TRANS_EXCL | FS_TRANS_SET, 0, |
| translator, len, |
| MACH_PORT_NULL, MACH_MSG_TYPE_COPY_SEND); |
| |
| if (! err) |
| /* Link the node, now a valid device, into the target directory. */ |
| err = __dir_link (dir, node, name, 1); |
| |
| __mach_port_deallocate (__mach_task_self (), dir); |
| if (! errnode) |
| __mach_port_deallocate (__mach_task_self (), node); |
| |
| if (err) |
| return __hurd_fail (err); |
| return 0; |
| } |
| |
| libc_hidden_def (__xmknodat) |
