diff options
Diffstat (limited to 'fs/befs/attribute.c')
| -rw-r--r-- | fs/befs/attribute.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/fs/befs/attribute.c b/fs/befs/attribute.c new file mode 100644 index 000000000000..e329d727053e --- /dev/null +++ b/fs/befs/attribute.c | |||
| @@ -0,0 +1,117 @@ | |||
| 1 | /* | ||
| 2 | * linux/fs/befs/attribute.c | ||
| 3 | * | ||
| 4 | * Copyright (C) 2002 Will Dyson <will_dyson@pobox.com> | ||
| 5 | * | ||
| 6 | * Many thanks to Dominic Giampaolo, author of "Practical File System | ||
| 7 | * Design with the Be File System", for such a helpful book. | ||
| 8 | * | ||
| 9 | */ | ||
| 10 | |||
| 11 | #include <linux/fs.h> | ||
| 12 | #include <linux/kernel.h> | ||
| 13 | #include <linux/string.h> | ||
| 14 | |||
| 15 | #include "befs.h" | ||
| 16 | #include "endian.h" | ||
| 17 | |||
| 18 | #define SD_DATA(sd)\ | ||
| 19 | (void*)((char*)sd + sizeof(*sd) + (sd->name_size - sizeof(sd->name))) | ||
| 20 | |||
| 21 | #define SD_NEXT(sd)\ | ||
| 22 | (befs_small_data*)((char*)sd + sizeof(*sd) + (sd->name_size - \ | ||
| 23 | sizeof(sd->name) + sd->data_size)) | ||
| 24 | |||
| 25 | int | ||
| 26 | list_small_data(struct super_block *sb, befs_inode * inode, filldir_t filldir); | ||
| 27 | |||
| 28 | befs_small_data * | ||
| 29 | find_small_data(struct super_block *sb, befs_inode * inode, | ||
| 30 | const char *name); | ||
| 31 | int | ||
| 32 | read_small_data(struct super_block *sb, befs_inode * inode, | ||
| 33 | befs_small_data * sdata, void *buf, size_t bufsize); | ||
| 34 | |||
| 35 | /** | ||
| 36 | * | ||
| 37 | * | ||
| 38 | * | ||
| 39 | * | ||
| 40 | * | ||
| 41 | */ | ||
| 42 | befs_small_data * | ||
| 43 | find_small_data(struct super_block *sb, befs_inode * inode, const char *name) | ||
| 44 | { | ||
| 45 | befs_small_data *sdata = inode->small_data; | ||
| 46 | |||
| 47 | while (sdata->type != 0) { | ||
| 48 | if (strcmp(name, sdata->name) != 0) { | ||
| 49 | return sdata; | ||
| 50 | } | ||
| 51 | sdata = SD_NEXT(sdata); | ||
| 52 | } | ||
| 53 | return NULL; | ||
| 54 | } | ||
| 55 | |||
| 56 | /** | ||
| 57 | * | ||
| 58 | * | ||
| 59 | * | ||
| 60 | * | ||
| 61 | * | ||
| 62 | */ | ||
| 63 | int | ||
| 64 | read_small_data(struct super_block *sb, befs_inode * inode, | ||
| 65 | const char *name, void *buf, size_t bufsize) | ||
| 66 | { | ||
| 67 | befs_small_data *sdata; | ||
| 68 | |||
| 69 | sdata = find_small_data(sb, inode, name); | ||
| 70 | if (sdata == NULL) | ||
| 71 | return BEFS_ERR; | ||
| 72 | else if (sdata->data_size > bufsize) | ||
| 73 | return BEFS_ERR; | ||
| 74 | |||
| 75 | memcpy(buf, SD_DATA(sdata), sdata->data_size); | ||
| 76 | |||
| 77 | return BEFS_OK; | ||
| 78 | } | ||
| 79 | |||
| 80 | /** | ||
| 81 | * | ||
| 82 | * | ||
| 83 | * | ||
| 84 | * | ||
| 85 | * | ||
| 86 | */ | ||
| 87 | int | ||
| 88 | list_small_data(struct super_block *sb, befs_inode * inode) | ||
| 89 | { | ||
| 90 | |||
| 91 | } | ||
| 92 | |||
| 93 | /** | ||
| 94 | * | ||
| 95 | * | ||
| 96 | * | ||
| 97 | * | ||
| 98 | * | ||
| 99 | */ | ||
| 100 | int | ||
| 101 | list_attr(struct super_block *sb, befs_inode * inode) | ||
| 102 | { | ||
| 103 | |||
| 104 | } | ||
| 105 | |||
| 106 | /** | ||
| 107 | * | ||
| 108 | * | ||
| 109 | * | ||
| 110 | * | ||
| 111 | * | ||
| 112 | */ | ||
| 113 | int | ||
| 114 | read_attr(struct super_block *sb, befs_inode * inode) | ||
| 115 | { | ||
| 116 | |||
| 117 | } | ||
