Rev 3 | Details | Compare with Previous | Last modification | View Log | RSS feed
| 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/util.h> |
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| 23 | #include <fs/maccess.h> |
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| 24 | #include <fs/fcntl.h> |
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| 25 | |||
| 26 | #include "file.h" |
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| 27 | #include "dentry.h" |
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| 28 | #include "fs.h" |
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| 29 | |||
| 30 | /* there is no permission test yet !!! */ |
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| 31 | |||
| 32 | int k_access(char *newpath, int amode) |
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| 33 | { |
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| 34 | declare_buffer(char,pathname,MAXPATHNAME); |
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| 35 | int createflag=DENTRY_NOCREATE; |
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| 36 | struct dentry *d; |
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| 37 | __pid_t pid; |
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| 38 | int len; |
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| 39 | |||
| 40 | call_to_fs(); |
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| 41 | |||
| 42 | if (amode&~(R_OK|R_OK|X_OK|F_OK)) return_from_fs(-EINVAL); |
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| 43 | |||
| 44 | len=__verify_read_nolen((char*)newpath); |
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| 45 | if ((!len)||(len>MAXPATHNAMELEN)) return_from_fs(-EVERIFY); |
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| 46 | __copy_from_user(pathname,newpath,len+1); |
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| 47 | |||
| 48 | pid=__get_pid(); |
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| 49 | lock_desctable(pid); |
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| 50 | |||
| 51 | d=find_dentry_from_ext(cwden_ptr(pid),(char *)pathname,&createflag); |
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| 52 | if (d==NULL) { |
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| 53 | unlock_desctable(pid); |
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| 54 | return_from_fs(-ENOENT); |
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| 55 | } |
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| 56 | unlock_dentry(d); |
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| 57 | |||
| 58 | unlock_desctable(pid); |
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| 59 | |||
| 60 | if (amode&X_OK) return_from_fs(-EACCES); |
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| 61 | return_from_fs(EOK); |
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| 62 | } |