The last user was removed in 5.1 in
commit 08300f4402ab ("a.out: remove core dumping support")
but this is part of the UAPI headers, so this may want to either wait
until a.out is removed entirely, or be removed from the magic number doc
and silently remain in the header
A cursory glance on DCS didn't show any user code actually using this
value
Found with
grep MAGIC Documentation/process/magic-number.rst | while read -r mag _;
do git grep -wF "$mag" | grep -ve '^Documentation.*magic-number.rst:' \
-qe ':#define '"$mag" || git grep -wF "$mag" | while IFS=: read -r f _;
do sed -i '/\b'"$mag"'\b/d' "$f"; done ; done
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@xxxxxxxxxxxxxxxxxx>
---
Documentation/process/magic-number.rst | 1 -
Documentation/translations/it_IT/process/magic-number.rst | 1 -
Documentation/translations/zh_CN/process/magic-number.rst | 1 -
Documentation/translations/zh_TW/process/magic-number.rst | 1 -
include/uapi/linux/a.out.h | 3 ---
5 files changed, 7 deletions(-)
diff --git a/Documentation/process/magic-number.rst b/Documentation/process/magic-number.rst
index eb2db3608a15..f48c6c6efaf7 100644
--- a/Documentation/process/magic-number.rst
+++ b/Documentation/process/magic-number.rst
@@ -69,7 +69,6 @@ Changelog::
Magic Name Number Structure File
===================== ================ ======================== ==========================================
PG_MAGIC 'P' pg_{read,write}_hdr ``include/linux/pg.h``
-CMAGIC 0x0111 user ``include/linux/a.out.h``
HDLC_MAGIC 0x239e n_hdlc ``drivers/char/n_hdlc.c``
APM_BIOS_MAGIC 0x4101 apm_user ``arch/x86/kernel/apm_32.c``
FASYNC_MAGIC 0x4601 fasync_struct ``include/linux/fs.h``
diff --git a/Documentation/translations/it_IT/process/magic-number.rst b/Documentation/translations/it_IT/process/magic-number.rst
index 86ef47906f37..27f60133fbe5 100644
--- a/Documentation/translations/it_IT/process/magic-number.rst
+++ b/Documentation/translations/it_IT/process/magic-number.rst
@@ -75,7 +75,6 @@ Registro dei cambiamenti::
Nome magico Numero Struttura File
===================== ================ ======================== ==========================================
PG_MAGIC 'P' pg_{read,write}_hdr ``include/linux/pg.h``
-CMAGIC 0x0111 user ``include/linux/a.out.h``
HDLC_MAGIC 0x239e n_hdlc ``drivers/char/n_hdlc.c``
APM_BIOS_MAGIC 0x4101 apm_user ``arch/x86/kernel/apm_32.c``
FASYNC_MAGIC 0x4601 fasync_struct ``include/linux/fs.h``
diff --git a/Documentation/translations/zh_CN/process/magic-number.rst b/Documentation/translations/zh_CN/process/magic-number.rst
index cbefdcbfbf53..520cc5cf4d63 100644
--- a/Documentation/translations/zh_CN/process/magic-number.rst
+++ b/Documentation/translations/zh_CN/process/magic-number.rst
@@ -58,7 +58,6 @@ Linux 魔术数
魔术数名 数字 结构 文件
===================== ================ ======================== ==========================================
PG_MAGIC 'P' pg_{read,write}_hdr ``include/linux/pg.h``
-CMAGIC 0x0111 user ``include/linux/a.out.h``
HDLC_MAGIC 0x239e n_hdlc ``drivers/char/n_hdlc.c``
APM_BIOS_MAGIC 0x4101 apm_user ``arch/x86/kernel/apm_32.c``
FASYNC_MAGIC 0x4601 fasync_struct ``include/linux/fs.h``
diff --git a/Documentation/translations/zh_TW/process/magic-number.rst b/Documentation/translations/zh_TW/process/magic-number.rst
index 7fd6e494467b..7d6debd0117e 100644
--- a/Documentation/translations/zh_TW/process/magic-number.rst
+++ b/Documentation/translations/zh_TW/process/magic-number.rst
@@ -61,7 +61,6 @@ Linux 魔術數
魔術數名 數字 結構 文件
===================== ================ ======================== ==========================================
PG_MAGIC 'P' pg_{read,write}_hdr ``include/linux/pg.h``
-CMAGIC 0x0111 user ``include/linux/a.out.h``
HDLC_MAGIC 0x239e n_hdlc ``drivers/char/n_hdlc.c``
APM_BIOS_MAGIC 0x4101 apm_user ``arch/x86/kernel/apm_32.c``
FASYNC_MAGIC 0x4601 fasync_struct ``include/linux/fs.h``
diff --git a/include/uapi/linux/a.out.h b/include/uapi/linux/a.out.h
index 5fafde3798e5..bb15da96df2a 100644
--- a/include/uapi/linux/a.out.h
+++ b/include/uapi/linux/a.out.h
@@ -70,9 +70,6 @@ enum machine_type {
The first page is unmapped to help trap NULL pointer references */
#define QMAGIC 0314
-/* Code indicating core file. */
-#define CMAGIC 0421
-
#if !defined (N_BADMAG)
#define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \
&& N_MAGIC(x) != NMAGIC \
--
2.30.2
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