diff options
Diffstat (limited to 'source3/smbd/open.c')
| -rw-r--r-- | source3/smbd/open.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/source3/smbd/open.c b/source3/smbd/open.c index a02fe91e68..394c7be3f8 100644 --- a/source3/smbd/open.c +++ b/source3/smbd/open.c @@ -541,13 +541,15 @@ static void open_file(files_struct *fsp,connection_struct *conn, /* mmap it if read-only */ if (!fsp->can_write) { fsp->mmap_size = file_size(fname); - fsp->mmap_ptr = (char *)mmap(NULL,fsp->mmap_size, - PROT_READ,MAP_SHARED,fsp->fd_ptr->fd,0); - - if (fsp->mmap_ptr == (char *)-1 || !fsp->mmap_ptr) { - DEBUG(3,("Failed to mmap() %s - %s\n", - fname,strerror(errno))); - fsp->mmap_ptr = NULL; + if (fsp->mmap_size < MAX_MMAP_SIZE) { + fsp->mmap_ptr = (char *)mmap(NULL,fsp->mmap_size, + PROT_READ,MAP_SHARED,fsp->fd_ptr->fd,0); + + if (fsp->mmap_ptr == (char *)-1 || !fsp->mmap_ptr) { + DEBUG(3,("Failed to mmap() %s - %s\n", + fname,strerror(errno))); + fsp->mmap_ptr = NULL; + } } } #endif |