Retro68/gcc/libsanitizer/sanitizer_common/sanitizer_procmaps_solaris.cc

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2019-06-02 15:48:37 +00:00
//===-- sanitizer_procmaps_solaris.cc -------------------------------------===//
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Information about the process mappings (Solaris-specific parts).
//===----------------------------------------------------------------------===//
#include "sanitizer_platform.h"
#if SANITIZER_SOLARIS
#include "sanitizer_common.h"
#include "sanitizer_procmaps.h"
// Before Solaris 11.4, <procfs.h> doesn't work in a largefile environment.
#undef _FILE_OFFSET_BITS
#include <procfs.h>
#include <limits.h>
namespace __sanitizer {
void ReadProcMaps(ProcSelfMapsBuff *proc_maps) {
ReadFileToBuffer("/proc/self/xmap", &proc_maps->data, &proc_maps->mmaped_size,
&proc_maps->len);
}
bool MemoryMappingLayout::Next(MemoryMappedSegment *segment) {
char *last = data_.proc_self_maps.data + data_.proc_self_maps.len;
if (data_.current >= last) return false;
prxmap_t *xmapentry = (prxmap_t*)data_.current;
segment->start = (uptr)xmapentry->pr_vaddr;
segment->end = (uptr)(xmapentry->pr_vaddr + xmapentry->pr_size);
segment->offset = (uptr)xmapentry->pr_offset;
segment->protection = 0;
if ((xmapentry->pr_mflags & MA_READ) != 0)
segment->protection |= kProtectionRead;
if ((xmapentry->pr_mflags & MA_WRITE) != 0)
segment->protection |= kProtectionWrite;
if ((xmapentry->pr_mflags & MA_EXEC) != 0)
segment->protection |= kProtectionExecute;
if (segment->filename != NULL && segment->filename_size > 0) {
internal_snprintf(segment->filename,
Min(segment->filename_size, (uptr)PATH_MAX), "%s",
xmapentry->pr_mapname);
}
data_.current += sizeof(prxmap_t);
return true;
}
} // namespace __sanitizer
#endif // SANITIZER_SOLARIS