diff options
Diffstat (limited to 'base/shared_memory_posix.cc')
| -rw-r--r-- | base/shared_memory_posix.cc | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/base/shared_memory_posix.cc b/base/shared_memory_posix.cc index e6f81c5..c948e58 100644 --- a/base/shared_memory_posix.cc +++ b/base/shared_memory_posix.cc @@ -7,6 +7,8 @@ #include <errno.h> #include <fcntl.h> #include <sys/mman.h> +#include <sys/stat.h> +#include <unistd.h> #include "base/file_util.h" #include "base/logging.h" @@ -23,6 +25,7 @@ const char kSemaphoreSuffix[] = "-sem"; SharedMemory::SharedMemory() : mapped_file_(-1), + inode_(0), memory_(NULL), read_only_(false), max_size_(0) { @@ -30,9 +33,16 @@ SharedMemory::SharedMemory() SharedMemory::SharedMemory(SharedMemoryHandle handle, bool read_only) : mapped_file_(handle.fd), + inode_(0), memory_(NULL), read_only_(read_only), max_size_(0) { + struct stat st; + if (fstat(handle.fd, &st) == 0) { + // If fstat fails, then the file descriptor is invalid and we'll learn this + // fact when Map() fails. + inode_ = st.st_ino; + } } SharedMemory::SharedMemory(SharedMemoryHandle handle, bool read_only, @@ -206,6 +216,12 @@ bool SharedMemory::CreateOrOpen(const std::wstring &name, mapped_file_ = dup(fileno(fp)); DCHECK(mapped_file_ >= 0); + + struct stat st; + if (fstat(mapped_file_, &st)) + NOTREACHED(); + inode_ = st.st_ino; + return true; } |