1//===-- sanitizer_procmaps_solaris.cc -------------------------------------===//
2//
3// This file is distributed under the University of Illinois Open Source
4// License. See LICENSE.TXT for details.
5//
6//===----------------------------------------------------------------------===//
7//
8// Information about the process mappings (Solaris-specific parts).
9//===----------------------------------------------------------------------===//
10
11#include "sanitizer_platform.h"
12#if SANITIZER_SOLARIS
13#include "sanitizer_common.h"
14#include "sanitizer_procmaps.h"
15
16// Before Solaris 11.4, <procfs.h> doesn't work in a largefile environment.
17#undef _FILE_OFFSET_BITS
18#include <procfs.h>
19#include <limits.h>
20
21namespace __sanitizer {
22
23void ReadProcMaps(ProcSelfMapsBuff *proc_maps) {
24  if (!ReadFileToBuffer("/proc/self/xmap", &proc_maps->data,
25                        &proc_maps->mmaped_size, &proc_maps->len)) {
26    proc_maps->data = nullptr;
27    proc_maps->mmaped_size = 0;
28    proc_maps->len = 0;
29  }
30}
31
32bool MemoryMappingLayout::Next(MemoryMappedSegment *segment) {
33  if (Error()) return false; // simulate empty maps
34  char *last = data_.proc_self_maps.data + data_.proc_self_maps.len;
35  if (data_.current >= last) return false;
36
37  prxmap_t *xmapentry = (prxmap_t*)data_.current;
38
39  segment->start = (uptr)xmapentry->pr_vaddr;
40  segment->end = (uptr)(xmapentry->pr_vaddr + xmapentry->pr_size);
41  segment->offset = (uptr)xmapentry->pr_offset;
42
43  segment->protection = 0;
44  if ((xmapentry->pr_mflags & MA_READ) != 0)
45    segment->protection |= kProtectionRead;
46  if ((xmapentry->pr_mflags & MA_WRITE) != 0)
47    segment->protection |= kProtectionWrite;
48  if ((xmapentry->pr_mflags & MA_EXEC) != 0)
49    segment->protection |= kProtectionExecute;
50
51  if (segment->filename != NULL && segment->filename_size > 0) {
52    internal_snprintf(segment->filename,
53                      Min(segment->filename_size, (uptr)PATH_MAX), "%s",
54                      xmapentry->pr_mapname);
55  }
56
57  data_.current += sizeof(prxmap_t);
58
59  return true;
60}
61
62}  // namespace __sanitizer
63
64#endif  // SANITIZER_SOLARIS
65