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2 | pj | 1 | |
2 | #include <fs/types.h> |
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3 | #include <fs/errno.h> |
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4 | #include <fs/task.h> |
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5 | #include <fs/maccess.h> |
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6 | #include <fs/dirent.h> |
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7 | |||
8 | #include "file.h" |
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9 | #include "inode.h" |
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10 | #include "fileop.h" |
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11 | #include "fs.h" |
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12 | |||
13 | #include "debug.h" |
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14 | |||
15 | int k_readdir(int fd, struct dirent *den) |
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16 | { |
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17 | __pid_t pid; |
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18 | int ret; |
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19 | |||
20 | call_to_fs(); |
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21 | |||
22 | printk5("k_readdir: START"); |
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23 | |||
24 | /* don't try to use a bad file descriptor */ |
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25 | pid=__get_pid(); |
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26 | if (check_fd(pid,fd)) { |
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27 | printk(KERN_INFO "k_readdir: using bad file descriptor"); |
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28 | return_from_fs(-EBADF); |
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29 | } |
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30 | |||
31 | /* don't try to read a regular file */ |
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32 | if (!file_ptr(pid,fd)->f_flag_isdir) return_from_fs(-EBADF); |
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33 | |||
34 | /* don't try to read into not user memory */ |
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35 | if (!__verify_write(den,sizeof(struct dirent))) return_from_fs(-EVERIFY); |
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36 | |||
37 | printk5("k_readdir: parameters check pass... calling specific readdir"); |
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38 | |||
39 | ret=file_ptr(pid,fd)->f_op->readdir(file_ptr(pid,fd),den); |
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40 | |||
41 | printk5("k_readdir: END"); |
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42 | |||
43 | return_from_fs(ret); |
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44 | } |