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glibc/sysdeps/mach/hurd/xmknod.c
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/* Copyright (C) 1991,92,93,94,95,96,99,2002 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, write to the Free | |
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
02111-1307 USA. */ | |
#include <errno.h> | |
#include <sys/stat.h> | |
#include <hurd.h> | |
#include <hurd/paths.h> | |
#include <fcntl.h> | |
#include "stdio-common/_itoa.h" | |
#include <string.h> | |
#include <sys/types.h> | |
/* Create a device file named FILE_NAME, 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 | |
__xmknod (int vers, const char *file_name, mode_t mode, dev_t *dev) | |
{ | |
error_t 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 | |
{ | |
errno = EINVAL; | |
return -1; | |
} | |
if (! 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 (minor (*dev), bp, 10, 0); | |
*--bp = '\0'; | |
bp = _itoa (major (*dev), bp, 10, 0); | |
memcpy (bp - len, translator, len); | |
translator = bp - len; | |
len = buf + sizeof (buf) - translator; | |
} | |
dir = __file_name_split (file_name, &name); | |
if (dir == MACH_PORT_NULL) | |
return -1; | |
/* Create a new, unlinked node in the target directory. */ | |
err = __dir_mkfile (dir, O_WRITE, (mode & ~S_IFMT) & ~_hurd_umask, &node); | |
if (! err) | |
/* 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); | |
__mach_port_deallocate (__mach_task_self (), node); | |
if (err) | |
return __hurd_fail (err); | |
return 0; | |
} | |
libc_hidden_def (__xmknod) |