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| author | Aaron <aaron@10gen.com> | 2009-04-23 11:16:54 -0400 |
|---|---|---|
| committer | Aaron <aaron@10gen.com> | 2009-04-23 11:16:54 -0400 |
| commit | 64c5d55c59fac341a33bd69c4ac9a28aa71553cf (patch) | |
| tree | 733c49046dcaecc9b66adc34e70203f78cab6718 /util/mmap_posix.cpp | |
| parent | b912d5ffda8cb0187cf70338cf623d1b142f425e (diff) | |
| download | mongo-64c5d55c59fac341a33bd69c4ac9a28aa71553cf.tar.gz | |
don't seg fault when run out of disk space
Diffstat (limited to 'util/mmap_posix.cpp')
| -rw-r--r-- | util/mmap_posix.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/util/mmap_posix.cpp b/util/mmap_posix.cpp index 5cd83a8021d..2503b84d5b7 100644 --- a/util/mmap_posix.cpp +++ b/util/mmap_posix.cpp @@ -61,6 +61,10 @@ namespace mongo { return 0; } + off_t filelen = lseek(fd, 0, SEEK_END); + massert( "file size allocation failed", filelen == length ); + lseek( fd, 0, SEEK_SET ); + view = mmap(NULL, length, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); if ( view == MAP_FAILED ) { out() << " mmap() failed for " << filename << " len:" << length << " errno:" << errno << endl; |