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Bug #2753

closed

mod_deflate backport compile error if ENABLE_MMAP not defined

Added by benkfra about 8 years ago. Updated about 8 years ago.

Status:
Fixed
Priority:
Normal
Category:
mod_deflate
Target version:
1.4.42
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Description

When compiling the backport of mod_deflate (sourcetree 1.4.41 with patch https://github.com/lighttpd/lighttpd1.4/pull/67.path) without ENABLE_MMAP defined, the following error will show up:

mod_deflate.c: In function `mod_deflate_file_chunk':
  mod_deflate.c:770: error: `MAP_FAILED' undeclared (first use in this function)

I'm not that fmiliar with the code to decide how to fix this. Maybe the 

#include "sys-mmap.h"

should not be covered by the conditional compilation or the use of the define in line 770 is a mistake at all.

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 #1

Updated by gstrauss about 8 years ago

  • Status changed from New to Patch Pending
  • Target version changed from 1.4.x to 1.4.42

Thanks for pointing it out. Adding #include "sys-mmap.h" is the right thing for portability. chunk.c does the same thing and initialized c->file.mmap.start to MAP_FAILED, whether or not header availability has been checked and USE_MMAP has been set.

diff --git a/src/mod_deflate.c b/src/mod_deflate.c
index 8d2695f..8f4c382 100644
--- a/src/mod_deflate.c
+++ b/src/mod_deflate.c
@@ -100,6 +100,7 @@

 #include <sys/types.h>
 #include <sys/stat.h>
+#include "sys-mmap.h" 

 #include <fcntl.h>
 #include <stdlib.h>
@@ -667,8 +668,8 @@ static void deflate_compress_cleanup(server *srv, connection *con, handler_ctx *

 static int mod_deflate_file_chunk(server *srv, connection *con, handler_ctx *hctx, chunk *c, off_t st_size) {
        off_t abs_offset;
-       off_t toSend;
-       char *start;
+       off_t toSend = -1;
+       char *start = NULL;
 #ifdef USE_MMAP
        off_t we_want_to_mmap = 2 MByte;
        off_t we_want_to_send = st_size;
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 #2

Updated by gstrauss about 8 years ago

  • Status changed from Patch Pending to Fixed
  • % Done changed from 0 to 100
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