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SubjectRe: [PATCH] 2.2: /proc/config.gz
From
Chip Salzenberg <chip@valinux.com> writes:

|> According to Andi Kleen:
|> > You probably don't have a .config.gz that is longer than a page
|> > (4K), because in that case it'll badly corrupt your memory (or you
|> > just haven't noticed the corruption yet ;)
|>
|> Hm... they're all <4K, but a few are pushing it.

Use this instead. It has the additional advantage of avoiding the useless
memcpy.

diff -urN linux-2.2.16.tmp/fs/proc/array.c linux-2.2.16.SuSE/fs/proc/array.c
--- linux-2.2.16.tmp/fs/proc/array.c Sat Jul 15 00:37:00 2000
+++ linux-2.2.16.SuSE/fs/proc/array.c Sat Jul 15 00:38:18 2000
@@ -414,6 +414,25 @@
return strlen(buffer);
}

+#ifdef CONFIG_PROC_CONFIG
+static int get_proc_config(char *buffer, char **start, off_t offset, off_t length)
+{
+ extern char *kernel_config_data;
+ extern int kernel_config_data_size;
+ off_t i;
+
+ i = kernel_config_data_size - offset;
+ if (i > 0) {
+ if (i > length)
+ i = length;
+ *start = kernel_config_data + offset;
+ return i;
+ }
+ else
+ return 0;
+}
+#endif
+
static int get_cmdline(char * buffer)
{
extern char saved_command_line[];
@@ -1460,6 +1479,11 @@
case PROC_STRAM:
return get_stram_list(page);
#endif
+#ifdef CONFIG_PROC_CONFIG
+ case PROC_CONFIG:
+ return get_proc_config(page, start, offset, length);
+#endif
+
}
return -EBADF;
}
Andreas.

--
Andreas Schwab "And now for something
SuSE Labs completely different."
Andreas.Schwab@suse.de
SuSE GmbH, Schanzäckerstr. 10, D-90443 Nürnberg
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