Linux补丁的制作方法

Linux补丁制作方法,简单明了：

1	diff -rNu ngx_output_chain.c ngx_output_chain_dx.c >ngx_output_chain.patch

看一段例子,具体做什么的，你懂的：)

01	--- ngx_output_chain.c  2010-10-12 07:06:52.000000000 -0500

02	+++ ngx_output_chain_dx.c   2011-11-11 01:48:06.335975441 -0600

03	@@ -565,10 +565,31 @@

04

}

05

06	if (n != size) {

07	-            ngx_log_error(NGX_LOG_ALERT, ctx->pool->log, 0,

08	-                          ngx_read_file_n " read only %z of %O from \\"%s\\"",

09	-                          n, size, src->file->name.data);

10	-            return NGX_ERROR;

11	+           int dxcnt=0;

12	+           while (dxcnt<5&&n!=size) {

13	+               dxcnt++;

14	+#if (NGX_HAVE_FILE_AIO)

15	+               if (ctx->aio_handler) {

16	+                   n = ngx_file_aio_read(src->file, dst->pos, (size_t) size,

17	+                                         src->file_pos, ctx->pool);

18	+                   if (n == NGX_AGAIN) {

19	+                       ctx->aio_handler(ctx, src->file);

20	+                       return NGX_AGAIN;

21	+                   }

22	+               } else {

23	+                       n = ngx_read_file(src->file, dst->pos, (size_t) size,

24	+                                       src->file_pos);

25	+               }

26

+#else

27	+               n = ngx_read_file(src->file, dst->pos, (size_t) size, src->file_pos);

28

+#endif

29	+           }

30	+           if (n != size) {

31	+               ngx_log_error(NGX_LOG_ALERT, ctx->pool->log, 0,

32	+                             ngx_read_file_n " read only %z of %O from \\"%s\\"",

33	+                             n, size, src->file->name.data);

34	+               return NGX_ERROR;

35	+           }

36

}

37

38	dst->last += n;