The patch titled
Subject: sysctl: move maxolduid as a sysctl specific const
has been added to the -mm tree. Its filename is
sysctl-move-maxolduid-as-a-sysctl-specific-const.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/sysctl-move-maxolduid-as-a-sysctl-specific-const.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/sysctl-move-maxolduid-as-a-sysctl-specific-const.patch
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------------------------------------------------------
From: Luis Chamberlain <mcgrof@xxxxxxxxxx>
Subject: sysctl: move maxolduid as a sysctl specific const
The maxolduid value is only shared for sysctl purposes for use on a max
range. Just stuff this into our shared const array.
Link: https://lkml.kernel.org/r/20211129205548.605569-5-mcgrof@xxxxxxxxxx
Signed-off-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Cc: Antti Palosaari <crope@xxxxxx>
Cc: Eric Biederman <ebiederm@xxxxxxxxxxxx>
Cc: Iurii Zaikin <yzaikin@xxxxxxxxxx>
Cc: "J. Bruce Fields" <bfields@xxxxxxxxxxxx>
Cc: Jeff Layton <jlayton@xxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Lukas Middendorf <kernel@xxxxxxxxxxx>
Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
Cc: Stephen Kitt <steve@xxxxxxx>
Cc: Xiaoming Ni <nixiaoming@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/proc_sysctl.c | 2 +-
include/linux/sysctl.h | 3 +++
kernel/sysctl.c | 12 ++++--------
3 files changed, 8 insertions(+), 9 deletions(-)
--- a/fs/proc/proc_sysctl.c~sysctl-move-maxolduid-as-a-sysctl-specific-const
+++ a/fs/proc/proc_sysctl.c
@@ -26,7 +26,7 @@ static const struct file_operations proc
static const struct inode_operations proc_sys_dir_operations;
/* shared constants to be used in various sysctls */
-const int sysctl_vals[] = { -1, 0, 1, 2, 4, 100, 200, 1000, 3000, INT_MAX };
+const int sysctl_vals[] = { -1, 0, 1, 2, 4, 100, 200, 1000, 65535, INT_MAX };
EXPORT_SYMBOL(sysctl_vals);
const unsigned long sysctl_long_vals[] = { 0, 1, LONG_MAX };
--- a/include/linux/sysctl.h~sysctl-move-maxolduid-as-a-sysctl-specific-const
+++ a/include/linux/sysctl.h
@@ -49,6 +49,9 @@ struct ctl_dir;
#define SYSCTL_THREE_THOUSAND ((void *)&sysctl_vals[8])
#define SYSCTL_INT_MAX ((void *)&sysctl_vals[9])
+/* this is needed for the proc_dointvec_minmax for [fs_]overflow UID and GID */
+#define SYSCTL_MAXOLDUID ((void *)&sysctl_vals[10])
+
extern const int sysctl_vals[];
#define SYSCTL_LONG_ZERO ((void *)&sysctl_long_vals[0])
--- a/kernel/sysctl.c~sysctl-move-maxolduid-as-a-sysctl-specific-const
+++ a/kernel/sysctl.c
@@ -109,10 +109,6 @@ static const int six_hundred_forty_kb =
/* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */
static const unsigned long dirty_bytes_min = 2 * PAGE_SIZE;
-/* this is needed for the proc_dointvec_minmax for [fs_]overflow UID and GID */
-static const int maxolduid = 65535;
-/* minolduid is SYSCTL_ZERO */
-
static const int ngroups_max = NGROUPS_MAX;
static const int cap_last_cap = CAP_LAST_CAP;
@@ -2126,7 +2122,7 @@ static struct ctl_table kern_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
- .extra2 = (void *)&maxolduid,
+ .extra2 = SYSCTL_MAXOLDUID,
},
{
.procname = "overflowgid",
@@ -2135,7 +2131,7 @@ static struct ctl_table kern_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
- .extra2 = (void *)&maxolduid,
+ .extra2 = SYSCTL_MAXOLDUID,
},
#ifdef CONFIG_S390
{
@@ -2907,7 +2903,7 @@ static struct ctl_table fs_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
- .extra2 = (void *)&maxolduid,
+ .extra2 = SYSCTL_MAXOLDUID,
},
{
.procname = "overflowgid",
@@ -2916,7 +2912,7 @@ static struct ctl_table fs_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
- .extra2 = (void *)&maxolduid,
+ .extra2 = SYSCTL_MAXOLDUID,
},
#ifdef CONFIG_FILE_LOCKING
{
_
Patches currently in -mm which might be from mcgrof@xxxxxxxxxx are
zram-use-attribute_groups.patch
hpet-simplify-subdirectory-registration-with-register_sysctl.patch
i915-simplify-subdirectory-registration-with-register_sysctl.patch
macintosh-mac_hidc-simplify-subdirectory-registration-with-register_sysctl.patch
ocfs2-simplify-subdirectory-registration-with-register_sysctl.patch
test_sysctl-simplify-subdirectory-registration-with-register_sysctl.patch
inotify-simplify-subdirectory-registration-with-register_sysctl-fix.patch
cdrom-simplify-subdirectory-registration-with-register_sysctl.patch
sysctl-add-helper-to-register-a-sysctl-mount-point.patch
fs-move-binfmt_misc-sysctl-to-its-own-file.patch
sysctl-share-unsigned-long-const-values.patch
fs-move-inode-sysctls-to-its-own-file.patch
fs-move-fs-stat-sysctls-to-file_tablec.patch
fs-move-dcache-sysctls-to-its-own-file.patch
sysctl-move-maxolduid-as-a-sysctl-specific-const.patch
fs-move-shared-sysctls-to-fs-sysctlsc.patch
fs-move-locking-sysctls-where-they-are-used.patch
fs-move-namei-sysctls-to-its-own-file.patch
fs-move-fs-execc-sysctls-into-its-own-file.patch
fs-move-pipe-sysctls-to-is-own-file.patch
sysctl-add-and-use-base-directory-declarer-and-registration-helper.patch
fs-move-namespace-sysctls-and-declare-fs-base-directory.patch
kernel-sysctlc-rename-sysctl_init-to-sysctl_init_bases.patch
