| 1 | /* |
|---|
| 2 | * sys_chmod.c - Change file access rights. |
|---|
| 3 | * |
|---|
| 4 | * Author Alain Greiner (2016,2017,2018,2019) |
|---|
| 5 | * |
|---|
| 6 | * Copyright (c) 2015 UPMC Sorbonne Universites |
|---|
| 7 | * |
|---|
| 8 | * This file is part of ALMOS-MKH. |
|---|
| 9 | * |
|---|
| 10 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
|---|
| 11 | * under the terms of the GNU General Public License as published by |
|---|
| 12 | * the Free Software Foundation; version 2.0 of the License. |
|---|
| 13 | * |
|---|
| 14 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
|---|
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
|---|
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|---|
| 17 | * General Public License for more details. |
|---|
| 18 | * |
|---|
| 19 | * You should have received a copy of the GNU General Public License |
|---|
| 20 | * along with ALMOS-MKH; if not, write to the Free Software Foundation, |
|---|
| 21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
|---|
| 22 | */ |
|---|
| 23 | |
|---|
| 24 | #include <hal_kernel_types.h> |
|---|
| 25 | #include <hal_uspace.h> |
|---|
| 26 | #include <vfs.h> |
|---|
| 27 | #include <vmm.h> |
|---|
| 28 | #include <printk.h> |
|---|
| 29 | #include <thread.h> |
|---|
| 30 | #include <process.h> |
|---|
| 31 | |
|---|
| 32 | #include <syscalls.h> |
|---|
| 33 | |
|---|
| 34 | /////////////////////////////////// |
|---|
| 35 | int sys_chmod( char * pathname, |
|---|
| 36 | uint32_t rights __attribute__((unused)) ) |
|---|
| 37 | { |
|---|
| 38 | error_t error; |
|---|
| 39 | char kbuf[CONFIG_VFS_MAX_PATH_LENGTH]; |
|---|
| 40 | |
|---|
| 41 | thread_t * this = CURRENT_THREAD; |
|---|
| 42 | process_t * process = this->process; |
|---|
| 43 | |
|---|
| 44 | // check pathname length |
|---|
| 45 | if( hal_strlen_from_uspace( pathname ) >= CONFIG_VFS_MAX_PATH_LENGTH ) |
|---|
| 46 | { |
|---|
| 47 | |
|---|
| 48 | #if DEBUG_SYSCALLS_ERROR |
|---|
| 49 | printk("\n[ERROR] in %s : pathname too long / thread %x in process %x\n", |
|---|
| 50 | __FUNCTION__, this->trdid, process->pid ); |
|---|
| 51 | #endif |
|---|
| 52 | this->errno = ENFILE; |
|---|
| 53 | return -1; |
|---|
| 54 | } |
|---|
| 55 | |
|---|
| 56 | // copy pathname in kernel space |
|---|
| 57 | hal_strcpy_from_uspace( XPTR( local_cxy , kbuf ), |
|---|
| 58 | pathname, |
|---|
| 59 | CONFIG_VFS_MAX_PATH_LENGTH ); |
|---|
| 60 | |
|---|
| 61 | printk("\n[ERROR] in %s : not implemented yet\n", __FUNCTION__ ); |
|---|
| 62 | return -1; |
|---|
| 63 | |
|---|
| 64 | // get cluster and local pointer on reference process |
|---|
| 65 | // xptr_t ref_xp = process->ref_xp; |
|---|
| 66 | // process_t * ref_ptr = (process_t *)GET_PTR( ref_xp ); |
|---|
| 67 | // cxy_t ref_cxy = GET_CXY( ref_xp ); |
|---|
| 68 | |
|---|
| 69 | // call the relevant VFS function |
|---|
| 70 | // error = vfs_chmod( cwd_xp, |
|---|
| 71 | // kbuf, |
|---|
| 72 | // rights ); |
|---|
| 73 | |
|---|
| 74 | if( error ) |
|---|
| 75 | { |
|---|
| 76 | printk("\n[ERROR] in %s : cannot remove directory %s\n", |
|---|
| 77 | __FUNCTION__ , kbuf ); |
|---|
| 78 | this->errno = error; |
|---|
| 79 | return -1; |
|---|
| 80 | } |
|---|
| 81 | |
|---|
| 82 | return 0; |
|---|
| 83 | |
|---|
| 84 | } // end sys_chmod() |
|---|
