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| author | Wez Furlong <wez@php.net> | 2004-04-21 12:02:47 +0000 |
|---|---|---|
| committer | Wez Furlong <wez@php.net> | 2004-04-21 12:02:47 +0000 |
| commit | 0fb4bf9771051eb8cd37d83d4d8c26e6957986eb (patch) | |
| tree | 876268acc1d9a966d9c3304b7ab32df7c6485f66 /main/streams/mmap.c | |
| parent | 206f0da25a12700fff17435267d620251ebc584a (diff) | |
| download | php-git-0fb4bf9771051eb8cd37d83d4d8c26e6957986eb.tar.gz | |
Fixed bug #19749 (shouldn't mmap() files larger than memory_limit)
Diffstat (limited to 'main/streams/mmap.c')
| -rw-r--r-- | main/streams/mmap.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/main/streams/mmap.c b/main/streams/mmap.c index 443faf384d..82bfa623f1 100644 --- a/main/streams/mmap.c +++ b/main/streams/mmap.c @@ -31,7 +31,11 @@ PHPAPI char *_php_stream_mmap_range(php_stream *stream, size_t offset, size_t le range.mode = mode; range.mapped = NULL; - /* TODO: Enforce system policy and limits for mmap sizes ? */ + /* For now, we impose an arbitrary 1MB limit to avoid + * runaway swapping when large files are passed thru. */ + if (length > 1 * 1024 * 1024) { + return NULL; + } if (PHP_STREAM_OPTION_RETURN_OK == php_stream_set_option(stream, PHP_STREAM_OPTION_MMAP_API, PHP_STREAM_MMAP_MAP_RANGE, &range)) { if (mapped_len) { |