1 /* 2 * A context resource offering support for opening files. 3 * 4 * Copyright (C) 2021, 2022, 2023 Paul Boddie <paul@boddie.org.uk> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of 9 * the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA 20 */ 21 22 #include <ipc/cap_alloc.h> 23 24 #include "opener_context_resource.h" 25 #include "opener_context_object_server.h" 26 #include "opener_resource.h" 27 28 #include <string.h> 29 30 31 32 /* Support for providing access to files. */ 33 34 OpenerContextResource::OpenerContextResource(OpenerResource *opener, Memory *memory) 35 : SimplePager(memory), _opener(opener) 36 { 37 } 38 39 ipc_server_default_config_type OpenerContextResource::config() 40 { 41 return config_OpenerContextObject; 42 } 43 44 45 46 /* Opener context interface methods. */ 47 48 long OpenerContextResource::mkdir(sys_mode_t mode) 49 { 50 char *path = get_string(); 51 52 if (path == NULL) 53 return -L4_EINVAL; 54 55 return _opener->mkdir(path, mode); 56 } 57 58 long OpenerContextResource::open(flags_t flags, offset_t *size, 59 l4_cap_idx_t *file, object_flags_t *object_flags) 60 { 61 char *path = get_string(); 62 63 if (path == NULL) 64 return -L4_EINVAL; 65 66 return _opener->open(path, flags, size, file, object_flags); 67 } 68 69 long OpenerContextResource::remove() 70 { 71 char *path = get_string(); 72 73 if (path == NULL) 74 return -L4_EINVAL; 75 76 return _opener->remove(path); 77 } 78 79 long OpenerContextResource::rename() 80 { 81 char *source, *target; 82 83 source = get_string(); 84 85 if (source == NULL) 86 return -L4_EINVAL; 87 88 target = get_string(strlen(source) + 1); 89 90 if (target == NULL) 91 return -L4_EINVAL; 92 93 return _opener->rename(source, target); 94 } 95 96 long OpenerContextResource::stat() 97 { 98 char *path = get_string(); 99 100 if (path == NULL) 101 return -L4_EINVAL; 102 103 return _opener->stat(path, (void *) _region->start, _region->size()); 104 } 105 106 // vim: tabstop=4 expandtab shiftwidth=4