forked from OSchip/llvm-project
69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
//===-- sanitizer_procmaps_solaris.cpp ------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Information about the process mappings (Solaris-specific parts).
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//===----------------------------------------------------------------------===//
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// Before Solaris 11.4, <procfs.h> doesn't work in a largefile environment.
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#undef _FILE_OFFSET_BITS
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#include "sanitizer_platform.h"
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#if SANITIZER_SOLARIS
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#include "sanitizer_common.h"
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#include "sanitizer_procmaps.h"
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#include <procfs.h>
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#include <limits.h>
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namespace __sanitizer {
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void ReadProcMaps(ProcSelfMapsBuff *proc_maps) {
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if (!ReadFileToBuffer("/proc/self/xmap", &proc_maps->data,
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&proc_maps->mmaped_size, &proc_maps->len)) {
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proc_maps->data = nullptr;
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proc_maps->mmaped_size = 0;
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proc_maps->len = 0;
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}
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}
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bool MemoryMappingLayout::Next(MemoryMappedSegment *segment) {
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if (Error()) return false; // simulate empty maps
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char *last = data_.proc_self_maps.data + data_.proc_self_maps.len;
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if (data_.current >= last) return false;
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prxmap_t *xmapentry =
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const_cast<prxmap_t *>(reinterpret_cast<const prxmap_t *>(data_.current));
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segment->start = (uptr)xmapentry->pr_vaddr;
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segment->end = (uptr)(xmapentry->pr_vaddr + xmapentry->pr_size);
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segment->offset = (uptr)xmapentry->pr_offset;
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segment->protection = 0;
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if ((xmapentry->pr_mflags & MA_READ) != 0)
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segment->protection |= kProtectionRead;
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if ((xmapentry->pr_mflags & MA_WRITE) != 0)
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segment->protection |= kProtectionWrite;
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if ((xmapentry->pr_mflags & MA_EXEC) != 0)
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segment->protection |= kProtectionExecute;
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if (segment->filename != NULL && segment->filename_size > 0) {
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char proc_path[PATH_MAX + 1];
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internal_snprintf(proc_path, sizeof(proc_path), "/proc/self/path/%s",
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xmapentry->pr_mapname);
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internal_readlink(proc_path, segment->filename, segment->filename_size);
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}
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data_.current += sizeof(prxmap_t);
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return true;
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}
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} // namespace __sanitizer
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#endif // SANITIZER_SOLARIS
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