1 | /*- |
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2 | * Copyright (c) 2005 Poul-Henning Kamp. All rights reserved. |
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3 | * |
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4 | * Redistribution and use in source and binary forms, with or without |
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5 | * modification, are permitted provided that the following conditions |
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6 | * are met: |
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7 | * 1. Redistributions of source code must retain the above copyright |
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8 | * notice, this list of conditions and the following disclaimer. |
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9 | * 2. Neither the name of the University nor the names of its contributors |
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10 | * may be used to endorse or promote products derived from this software |
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11 | * without specific prior written permission. |
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12 | * |
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13 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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14 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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16 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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17 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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18 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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19 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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20 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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21 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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22 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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23 | * SUCH DAMAGE. |
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24 | * |
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25 | * $FreeBSD$ |
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26 | */ |
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27 | |
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28 | /* |
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29 | * This file documents a private interface and it SHALL only be used |
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30 | * by kern/kern_conf.c and fs/devfs/... |
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31 | */ |
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32 | |
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33 | #ifndef _FS_DEVFS_DEVFS_INT_H_ |
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34 | #define _FS_DEVFS_DEVFS_INT_H_ |
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35 | |
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36 | #include <sys/queue.h> |
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37 | |
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38 | #ifdef _KERNEL |
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39 | |
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40 | struct devfs_dirent; |
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41 | struct devfs_mount; |
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42 | |
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43 | struct cdev_privdata { |
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44 | struct file *cdpd_fp; |
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45 | void *cdpd_data; |
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46 | void (*cdpd_dtr)(void *); |
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47 | LIST_ENTRY(cdev_privdata) cdpd_list; |
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48 | }; |
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49 | |
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50 | struct cdev_priv { |
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51 | struct cdev cdp_c; |
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52 | TAILQ_ENTRY(cdev_priv) cdp_list; |
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53 | |
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54 | u_int cdp_inode; |
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55 | |
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56 | u_int cdp_flags; |
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57 | #define CDP_ACTIVE (1 << 0) |
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58 | #define CDP_SCHED_DTR (1 << 1) |
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59 | #define CDP_UNREF_DTR (1 << 2) |
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60 | |
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61 | #ifndef __rtems__ |
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62 | u_int cdp_inuse; |
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63 | u_int cdp_maxdirent; |
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64 | struct devfs_dirent **cdp_dirents; |
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65 | struct devfs_dirent *cdp_dirent0; |
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66 | #endif /* __rtems__ */ |
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67 | |
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68 | TAILQ_ENTRY(cdev_priv) cdp_dtr_list; |
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69 | void (*cdp_dtr_cb)(void *); |
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70 | void *cdp_dtr_cb_arg; |
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71 | |
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72 | LIST_HEAD(, cdev_privdata) cdp_fdpriv; |
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73 | }; |
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74 | |
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75 | #define cdev2priv(c) __containerof(c, struct cdev_priv, cdp_c) |
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76 | |
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77 | struct cdev *devfs_alloc(int); |
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78 | int devfs_dev_exists(const char *); |
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79 | void devfs_free(struct cdev *); |
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80 | void devfs_create(struct cdev *); |
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81 | void devfs_destroy(struct cdev *); |
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82 | void devfs_destroy_cdevpriv(struct cdev_privdata *); |
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83 | |
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84 | int devfs_dir_find(const char *); |
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85 | void devfs_dir_ref_de(struct devfs_mount *, struct devfs_dirent *); |
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86 | void devfs_dir_unref_de(struct devfs_mount *, struct devfs_dirent *); |
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87 | int devfs_pathpath(const char *, const char *); |
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88 | |
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89 | extern struct unrhdr *devfs_inos; |
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90 | extern struct mtx devmtx; |
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91 | extern struct mtx devfs_de_interlock; |
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92 | extern struct sx clone_drain_lock; |
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93 | extern struct mtx cdevpriv_mtx; |
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94 | extern TAILQ_HEAD(cdev_priv_list, cdev_priv) cdevp_list; |
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95 | |
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96 | #endif /* _KERNEL */ |
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97 | |
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98 | #endif /* !_FS_DEVFS_DEVFS_INT_H_ */ |
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