Mercurial > hg > nginx
changeset 687:8e446a2daf48
workaround of 2G+ file bug in 64-bit Linux sendfile()
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Thu, 07 Sep 2006 18:56:45 +0000 |
| parents | 0bbb66f76af1 |
| children | 03fa118203d6 |
| files | src/os/unix/ngx_linux_sendfile_chain.c |
| diffstat | 1 files changed, 10 insertions(+), 4 deletions(-) [+] |
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--- a/src/os/unix/ngx_linux_sendfile_chain.c +++ b/src/os/unix/ngx_linux_sendfile_chain.c @@ -16,9 +16,15 @@ * parameter is int32_t, and use sendfile() for the file parts below 2G only, * see src/os/unix/ngx_linux_config.h * - * Linux 2.4.21 has a new sendfile64() syscall #239. + * Linux 2.4.21 has the new sendfile64() syscall #239. + * + * On Linux up to 2.6.16 sendfile() does not allow to pass the count parameter + * more than 2G-1 bytes even on 64-bit platforms: it returns EINVAL, + * so we limit it to 2G-1 bytes. */ +#define NGX_SENDFILE_LIMIT 2147483647L + #if (IOV_MAX > 64) #define NGX_HEADERS 64 @@ -54,10 +60,10 @@ ngx_linux_sendfile_chain(ngx_connection_ } - /* the maximum limit size is the maximum size_t value - the page size */ + /* the maximum limit size is 2G-1 - the page size */ - if (limit == 0 || limit > NGX_MAX_SIZE_T_VALUE - ngx_pagesize) { - limit = NGX_MAX_SIZE_T_VALUE - ngx_pagesize; + if (limit == 0 || limit > NGX_SENDFILE_LIMIT - ngx_pagesize) { + limit = NGX_SENDFILE_LIMIT - ngx_pagesize; }