168d75effSDimitry Andric //===-- sanitizer_procmaps_solaris.cpp ------------------------------------===// 268d75effSDimitry Andric // 368d75effSDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 468d75effSDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 568d75effSDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 668d75effSDimitry Andric // 768d75effSDimitry Andric //===----------------------------------------------------------------------===// 868d75effSDimitry Andric // 968d75effSDimitry Andric // Information about the process mappings (Solaris-specific parts). 1068d75effSDimitry Andric //===----------------------------------------------------------------------===// 1168d75effSDimitry Andric 12*e8d8bef9SDimitry Andric // Before Solaris 11.4, <procfs.h> doesn't work in a largefile environment. 13*e8d8bef9SDimitry Andric #undef _FILE_OFFSET_BITS 1468d75effSDimitry Andric #include "sanitizer_platform.h" 1568d75effSDimitry Andric #if SANITIZER_SOLARIS 1668d75effSDimitry Andric #include "sanitizer_common.h" 1768d75effSDimitry Andric #include "sanitizer_procmaps.h" 1868d75effSDimitry Andric 1968d75effSDimitry Andric #include <procfs.h> 2068d75effSDimitry Andric #include <limits.h> 2168d75effSDimitry Andric 2268d75effSDimitry Andric namespace __sanitizer { 2368d75effSDimitry Andric 2468d75effSDimitry Andric void ReadProcMaps(ProcSelfMapsBuff *proc_maps) { 2568d75effSDimitry Andric if (!ReadFileToBuffer("/proc/self/xmap", &proc_maps->data, 2668d75effSDimitry Andric &proc_maps->mmaped_size, &proc_maps->len)) { 2768d75effSDimitry Andric proc_maps->data = nullptr; 2868d75effSDimitry Andric proc_maps->mmaped_size = 0; 2968d75effSDimitry Andric proc_maps->len = 0; 3068d75effSDimitry Andric } 3168d75effSDimitry Andric } 3268d75effSDimitry Andric 3368d75effSDimitry Andric bool MemoryMappingLayout::Next(MemoryMappedSegment *segment) { 3468d75effSDimitry Andric if (Error()) return false; // simulate empty maps 3568d75effSDimitry Andric char *last = data_.proc_self_maps.data + data_.proc_self_maps.len; 3668d75effSDimitry Andric if (data_.current >= last) return false; 3768d75effSDimitry Andric 38*e8d8bef9SDimitry Andric prxmap_t *xmapentry = 39*e8d8bef9SDimitry Andric const_cast<prxmap_t *>(reinterpret_cast<const prxmap_t *>(data_.current)); 4068d75effSDimitry Andric 4168d75effSDimitry Andric segment->start = (uptr)xmapentry->pr_vaddr; 4268d75effSDimitry Andric segment->end = (uptr)(xmapentry->pr_vaddr + xmapentry->pr_size); 4368d75effSDimitry Andric segment->offset = (uptr)xmapentry->pr_offset; 4468d75effSDimitry Andric 4568d75effSDimitry Andric segment->protection = 0; 4668d75effSDimitry Andric if ((xmapentry->pr_mflags & MA_READ) != 0) 4768d75effSDimitry Andric segment->protection |= kProtectionRead; 4868d75effSDimitry Andric if ((xmapentry->pr_mflags & MA_WRITE) != 0) 4968d75effSDimitry Andric segment->protection |= kProtectionWrite; 5068d75effSDimitry Andric if ((xmapentry->pr_mflags & MA_EXEC) != 0) 5168d75effSDimitry Andric segment->protection |= kProtectionExecute; 5268d75effSDimitry Andric 5368d75effSDimitry Andric if (segment->filename != NULL && segment->filename_size > 0) { 5468d75effSDimitry Andric char proc_path[PATH_MAX + 1]; 5568d75effSDimitry Andric 5668d75effSDimitry Andric internal_snprintf(proc_path, sizeof(proc_path), "/proc/self/path/%s", 5768d75effSDimitry Andric xmapentry->pr_mapname); 5868d75effSDimitry Andric internal_readlink(proc_path, segment->filename, segment->filename_size); 5968d75effSDimitry Andric } 6068d75effSDimitry Andric 6168d75effSDimitry Andric data_.current += sizeof(prxmap_t); 6268d75effSDimitry Andric 6368d75effSDimitry Andric return true; 6468d75effSDimitry Andric } 6568d75effSDimitry Andric 6668d75effSDimitry Andric } // namespace __sanitizer 6768d75effSDimitry Andric 6868d75effSDimitry Andric #endif // SANITIZER_SOLARIS 69