1 | /* |
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2 | * sysfs/sysfs_context.c - sysfs context related operations |
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3 | * |
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4 | * Copyright (c) 2008,2009,2010,2011,2012 Ghassan Almaless |
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5 | * Copyright (c) 2011,2012 UPMC Sorbonne Universites |
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6 | * |
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7 | * This file is part of ALMOS-kernel. |
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8 | * |
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9 | * ALMOS-kernel is free software; you can redistribute it and/or modify it |
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10 | * under the terms of the GNU General Public License as published by |
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11 | * the Free Software Foundation; version 2.0 of the License. |
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12 | * |
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13 | * ALMOS-kernel is distributed in the hope that it will be useful, but |
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14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 | * General Public License for more details. |
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17 | * |
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18 | * You should have received a copy of the GNU General Public License |
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19 | * along with ALMOS-kernel; if not, write to the Free Software Foundation, |
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20 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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21 | */ |
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22 | |
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23 | #include <chdev.h> |
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24 | #include <driver.h> |
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25 | #include <kmem.h> |
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26 | #include <string.h> |
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27 | #include <vfs.h> |
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28 | #include <errno.h> |
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29 | #include <metafs.h> |
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30 | |
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31 | #include <sysfs.h> |
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32 | #include <sysfs-private.h> |
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33 | |
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34 | sysfs_entry_t sysfs_root_entry; |
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35 | |
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36 | VFS_CREATE_CONTEXT(sysfs_create_context) |
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37 | { |
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38 | context->ctx_type = FS_TYPE_SYSFS; |
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39 | VFS_SET(context->ctx_flags, VFS_FS_LOCAL); |
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40 | context->ctx_op = (struct vfs_context_op_s *) &sysfs_ctx_op; |
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41 | context->ctx_inode_op = (struct vfs_inode_op_s *) &sysfs_i_op; |
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42 | context->ctx_file_op = (struct vfs_file_op_s *) &sysfs_f_op; |
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43 | return 0; |
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44 | } |
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45 | |
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46 | VFS_DESTROY_CONTEXT(sysfs_destroy_context) |
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47 | { |
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48 | return 0; |
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49 | } |
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50 | |
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51 | VFS_READ_ROOT(sysfs_read_root) |
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52 | { |
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53 | struct sysfs_node_s *info; |
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54 | |
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55 | root->i_links = 1; |
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56 | root->i_size = 0; |
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57 | root->i_attr = VFS_DIR; |
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58 | root->i_number = vfs_inum_new(context); |
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59 | |
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60 | //info has been allocated by sysfs_init |
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61 | info = root->i_pv; |
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62 | info->node = &sysfs_root_entry.node; |
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63 | |
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64 | return 0; |
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65 | } |
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66 | |
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67 | VFS_REPLI_ROOT(sysfs_repli_root) |
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68 | { |
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69 | struct sysfs_node_s *info; |
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70 | |
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71 | info = root->i_pv; |
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72 | info->node = &sysfs_root_entry.node; |
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73 | |
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74 | return 0; |
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75 | } |
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76 | |
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77 | VFS_WRITE_ROOT(sysfs_write_root) |
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78 | { |
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79 | return 0; |
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80 | } |
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81 | |
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82 | const struct vfs_context_op_s sysfs_ctx_op = |
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83 | { |
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84 | .create = sysfs_create_context, |
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85 | .destroy = sysfs_destroy_context, |
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86 | .read_root = sysfs_read_root, |
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87 | .repli_root = sysfs_repli_root, |
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88 | .write_root = sysfs_write_root |
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89 | }; |
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