* [PATCH] Documentation: fix core_pattern max length
@ 2019-03-18 17:34 Jakub Wilk
2019-03-25 15:51 ` Jonathan Corbet
0 siblings, 1 reply; 2+ messages in thread
From: Jakub Wilk @ 2019-03-18 17:34 UTC (permalink / raw)
To: Jonathan Corbet; +Cc: linux-doc, Alexander Viro
The buffer size for core_pattern is 128, but one character is used for
terminating null byte, so the actual limit is 127:
# printf '%0999d' > /proc/sys/kernel/core_pattern
# tr -d '\n' < /proc/sys/kernel/core_pattern | wc -c
127
Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
---
Documentation/sysctl/kernel.txt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt
index aa058aa7bf28..f0c86fbb3b48 100644
--- a/Documentation/sysctl/kernel.txt
+++ b/Documentation/sysctl/kernel.txt
@@ -196,7 +196,7 @@ CAP_LAST_CAP from the kernel.
core_pattern:
core_pattern is used to specify a core dumpfile pattern name.
-. max length 128 characters; default value is "core"
+. max length 127 characters; default value is "core"
. core_pattern is used as a pattern template for the output filename;
certain string patterns (beginning with '%') are substituted with
their actual values.
--
2.20.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] Documentation: fix core_pattern max length
2019-03-18 17:34 [PATCH] Documentation: fix core_pattern max length Jakub Wilk
@ 2019-03-25 15:51 ` Jonathan Corbet
0 siblings, 0 replies; 2+ messages in thread
From: Jonathan Corbet @ 2019-03-25 15:51 UTC (permalink / raw)
To: Jakub Wilk; +Cc: linux-doc, Alexander Viro
On Mon, 18 Mar 2019 18:34:21 +0100
Jakub Wilk <jwilk@jwilk.net> wrote:
> The buffer size for core_pattern is 128, but one character is used for
> terminating null byte, so the actual limit is 127:
>
> # printf '%0999d' > /proc/sys/kernel/core_pattern
> # tr -d '\n' < /proc/sys/kernel/core_pattern | wc -c
> 127
>
> Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
Applied, thanks.
jon
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