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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | |
| 1063 | tullio | 2 | /* |
| 3 | * This program is free software; you can redistribute it and/or modify |
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| 4 | * it under the terms of the GNU General Public License as published by |
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| 5 | * the Free Software Foundation; either version 2 of the License, or |
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| 6 | * (at your option) any later version. |
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| 7 | * |
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| 8 | * This program is distributed in the hope that it will be useful, |
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| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 11 | * GNU General Public License for more details. |
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| 12 | * |
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| 13 | * You should have received a copy of the GNU General Public License |
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| 14 | * along with this program; if not, write to the Free Software |
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| 15 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 16 | * |
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| 17 | */ |
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| 18 | |||
| 2 | pj | 19 | #include <fs/types.h> |
| 20 | #include <fs/errno.h> |
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| 21 | #include <fs/task.h> |
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| 22 | #include <fs/maccess.h> |
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| 23 | #include <fs/dirent.h> |
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| 24 | |||
| 25 | #include "file.h" |
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| 26 | #include "inode.h" |
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| 27 | #include "fileop.h" |
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| 28 | #include "fs.h" |
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| 29 | |||
| 30 | #include "debug.h" |
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| 31 | |||
| 32 | int k_readdir(int fd, struct dirent *den) |
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| 33 | { |
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| 34 | __pid_t pid; |
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| 35 | int ret; |
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| 36 | |||
| 37 | call_to_fs(); |
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| 38 | |||
| 39 | printk5("k_readdir: START"); |
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| 40 | |||
| 41 | /* don't try to use a bad file descriptor */ |
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| 42 | pid=__get_pid(); |
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| 43 | if (check_fd(pid,fd)) { |
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| 44 | printk(KERN_INFO "k_readdir: using bad file descriptor"); |
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| 45 | return_from_fs(-EBADF); |
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| 46 | } |
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| 47 | |||
| 48 | /* don't try to read a regular file */ |
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| 49 | if (!file_ptr(pid,fd)->f_flag_isdir) return_from_fs(-EBADF); |
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| 50 | |||
| 51 | /* don't try to read into not user memory */ |
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| 52 | if (!__verify_write(den,sizeof(struct dirent))) return_from_fs(-EVERIFY); |
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| 53 | |||
| 54 | printk5("k_readdir: parameters check pass... calling specific readdir"); |
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| 55 | |||
| 56 | ret=file_ptr(pid,fd)->f_op->readdir(file_ptr(pid,fd),den); |
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| 57 | |||
| 58 | printk5("k_readdir: END"); |
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| 59 | |||
| 60 | return_from_fs(ret); |
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| 61 | } |