diff options
Diffstat (limited to 'lib/System/Unix/MappedFile.inc')
-rw-r--r-- | lib/System/Unix/MappedFile.inc | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/lib/System/Unix/MappedFile.inc b/lib/System/Unix/MappedFile.inc index ef959ba..4dccd13 100644 --- a/lib/System/Unix/MappedFile.inc +++ b/lib/System/Unix/MappedFile.inc @@ -122,7 +122,7 @@ size_t MappedFile::size() const { return info_->Size; } -void MappedFile::size(size_t new_size) { +bool MappedFile::size(size_t new_size, std::string* ErrMsg) { assert(info_ && "MappedFile not initialized"); // Take the mapping out of memory @@ -140,12 +140,14 @@ void MappedFile::size(size_t new_size) { if (new_size > cur_size) { // Ensure we can allocate at least the idodes necessary to handle the // file size requested. - ::lseek(info_->FD, new_size, SEEK_SET); - ::write(info_->FD, "\0", 1); + if ((off_t)-1 == ::lseek(info_->FD, new_size, SEEK_SET)) + return MakeErrMsg(ErrMsg, "Can't lseek: "); + if (-1 == ::write(info_->FD, "\0", 1)) + return MakeErrMsg(ErrMsg, "Can't write: "); } // Put the mapping back into memory. - this->map(0); + return this->map(ErrMsg); } } |