diff options
Diffstat (limited to 'gnu/packages/patches/php-fix-streams-copy-length.patch')
| -rw-r--r-- | gnu/packages/patches/php-fix-streams-copy-length.patch | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/gnu/packages/patches/php-fix-streams-copy-length.patch b/gnu/packages/patches/php-fix-streams-copy-length.patch new file mode 100644 index 0000000000..d68f658071 --- /dev/null +++ b/gnu/packages/patches/php-fix-streams-copy-length.patch @@ -0,0 +1,52 @@ +From cddcc10becb013ae498ea9c2836792f407b61678 Mon Sep 17 00:00:00 2001 +From: Julien Lepiller <julien@lepiller.eu> +Date: Tue, 7 Feb 2023 22:55:59 +0100 +Subject: [PATCH] Fix file corruption when using copy_file_range. + +This patch is adapted from https://github.com/php/php-src/pull/10440. +--- + main/streams/streams.c | 21 +++++++++++++++++---- + 1 file changed, 17 insertions(+), 4 deletions(-) + +diff --git a/main/streams/streams.c b/main/streams/streams.c +index 20029fc7..68dc76c5 100644 +--- a/main/streams/streams.c ++++ b/main/streams/streams.c +@@ -1634,8 +1634,21 @@ PHPAPI zend_result _php_stream_copy_to_stream_ex(php_stream *src, php_stream *de + char *p; + + do { +- size_t chunk_size = (maxlen == 0 || maxlen > PHP_STREAM_MMAP_MAX) ? PHP_STREAM_MMAP_MAX : maxlen; +- size_t mapped; ++ /* We must not modify maxlen here, because otherwise the file copy fallback below can fail */ ++ size_t chunk_size, must_read, mapped; ++ if (maxlen == 0) { ++ /* Unlimited read */ ++ must_read = chunk_size = PHP_STREAM_MMAP_MAX; ++ } else { ++ must_read = maxlen - haveread; ++ if (must_read >= PHP_STREAM_MMAP_MAX) { ++ chunk_size = PHP_STREAM_MMAP_MAX; ++ } else { ++ /* In case the length we still have to read from the file could be smaller than the file size, ++ * chunk_size must not get bigger the size we're trying to read. */ ++ chunk_size = must_read; ++ } ++ } + + p = php_stream_mmap_range(src, php_stream_tell(src), chunk_size, PHP_STREAM_MAP_MODE_SHARED_READONLY, &mapped); + +@@ -1667,8 +1680,8 @@ PHPAPI zend_result _php_stream_copy_to_stream_ex(php_stream *src, php_stream *de + return SUCCESS; + } + if (maxlen != 0) { +- maxlen -= mapped; +- if (maxlen == 0) { ++ must_read -= mapped; ++ if (must_read == 0) { + return SUCCESS; + } + } +-- +2.38.1 + |