The argument is never used and can be removed.
In a future commit the sysctl core will only use
"const struct ctl_table". Removing it here is a preparation for this
consitifcation.
The patch was created with the following coccinelle script:
@@
identifier func, head, table, uid, gid;
@@
void func(
struct ctl_table_header *head,
- struct ctl_table *table,
kuid_t *uid, kgid_t *gid)
{ ... }
The single changed location was validate through manual inspection and
compilation.
In addition, a search for 'set_ownership' was done over the full tree to
look for places that were missed by coccinelle.
None were found.
Signed-off-by: Thomas Weißschuh <[email protected]>
---
fs/proc/proc_sysctl.c | 2 +-
include/linux/sysctl.h | 1 -
ipc/ipc_sysctl.c | 3 +--
ipc/mq_sysctl.c | 3 +--
net/sysctl_net.c | 1 -
5 files changed, 3 insertions(+), 7 deletions(-)
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 37cde0efee57..ed3a41ed9705 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -480,7 +480,7 @@ static struct inode *proc_sys_make_inode(struct super_block *sb,
}
if (root->set_ownership)
- root->set_ownership(head, table, &inode->i_uid, &inode->i_gid);
+ root->set_ownership(head, &inode->i_uid, &inode->i_gid);
else {
inode->i_uid = GLOBAL_ROOT_UID;
inode->i_gid = GLOBAL_ROOT_GID;
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index ee7d33b89e9e..60333a6b9370 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -205,7 +205,6 @@ struct ctl_table_root {
struct ctl_table_set default_set;
struct ctl_table_set *(*lookup)(struct ctl_table_root *root);
void (*set_ownership)(struct ctl_table_header *head,
- struct ctl_table *table,
kuid_t *uid, kgid_t *gid);
int (*permissions)(struct ctl_table_header *head, struct ctl_table *table);
};
diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c
index 45cb1dabce29..1a5085e5b178 100644
--- a/ipc/ipc_sysctl.c
+++ b/ipc/ipc_sysctl.c
@@ -192,7 +192,6 @@ static int set_is_seen(struct ctl_table_set *set)
}
static void ipc_set_ownership(struct ctl_table_header *head,
- struct ctl_table *table,
kuid_t *uid, kgid_t *gid)
{
struct ipc_namespace *ns =
@@ -224,7 +223,7 @@ static int ipc_permissions(struct ctl_table_header *head, struct ctl_table *tabl
kuid_t ns_root_uid;
kgid_t ns_root_gid;
- ipc_set_ownership(head, table, &ns_root_uid, &ns_root_gid);
+ ipc_set_ownership(head, &ns_root_uid, &ns_root_gid);
if (uid_eq(current_euid(), ns_root_uid))
mode >>= 6;
diff --git a/ipc/mq_sysctl.c b/ipc/mq_sysctl.c
index 21fba3a6edaf..6bb1c5397c69 100644
--- a/ipc/mq_sysctl.c
+++ b/ipc/mq_sysctl.c
@@ -78,7 +78,6 @@ static int set_is_seen(struct ctl_table_set *set)
}
static void mq_set_ownership(struct ctl_table_header *head,
- struct ctl_table *table,
kuid_t *uid, kgid_t *gid)
{
struct ipc_namespace *ns =
@@ -97,7 +96,7 @@ static int mq_permissions(struct ctl_table_header *head, struct ctl_table *table
kuid_t ns_root_uid;
kgid_t ns_root_gid;
- mq_set_ownership(head, table, &ns_root_uid, &ns_root_gid);
+ mq_set_ownership(head, &ns_root_uid, &ns_root_gid);
if (uid_eq(current_euid(), ns_root_uid))
mode >>= 6;
diff --git a/net/sysctl_net.c b/net/sysctl_net.c
index 051ed5f6fc93..a0a7a79991f9 100644
--- a/net/sysctl_net.c
+++ b/net/sysctl_net.c
@@ -54,7 +54,6 @@ static int net_ctl_permissions(struct ctl_table_header *head,
}
static void net_ctl_set_ownership(struct ctl_table_header *head,
- struct ctl_table *table,
kuid_t *uid, kgid_t *gid)
{
struct net *net = container_of(head->set, struct net, sysctls);
--
2.44.0
On Fri, Mar 15, 2024 at 07:11:30PM +0100, Thomas Wei?schuh wrote:
> The argument is never used and can be removed.
>
> In a future commit the sysctl core will only use
> "const struct ctl_table". Removing it here is a preparation for this
> consitifcation.
>
> The patch was created with the following coccinelle script:
>
> @@
> identifier func, head, table, uid, gid;
> @@
>
> void func(
> struct ctl_table_header *head,
> - struct ctl_table *table,
> kuid_t *uid, kgid_t *gid)
> { ... }
>
> The single changed location was validate through manual inspection and
> compilation.
Will drop this from the commit message when I add it to constfy branch.
For the same reasons as before.
here is the commit message that I'll use
"""
sysctl: treewide: drop unused argument ctl_table_root::set_ownership(table)
Remove the 'table' argument from set_ownership as it is never used. This
change is a step towards putting "struct ctl_table" into .rodata and
eventually having sysctl core only use "const struct ctl_table".
The patch was created with the following coccinelle script:
@@
identifier func, head, table, uid, gid;
@@
void func(
struct ctl_table_header *head,
- struct ctl_table *table,
kuid_t *uid, kgid_t *gid)
{ ... }
No additional occurrences of 'set_ownership' were found after doing a
tree-wide search.
"""
Reviewed-by: Joel Granados <[email protected]>
thx.
>
> In addition, a search for 'set_ownership' was done over the full tree to
> look for places that were missed by coccinelle.
> None were found.
>
> Signed-off-by: Thomas Wei?schuh <[email protected]>
> ---
> fs/proc/proc_sysctl.c | 2 +-
> include/linux/sysctl.h | 1 -
> ipc/ipc_sysctl.c | 3 +--
> ipc/mq_sysctl.c | 3 +--
> net/sysctl_net.c | 1 -
> 5 files changed, 3 insertions(+), 7 deletions(-)
>
> diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
> index 37cde0efee57..ed3a41ed9705 100644
> --- a/fs/proc/proc_sysctl.c
> +++ b/fs/proc/proc_sysctl.c
> @@ -480,7 +480,7 @@ static struct inode *proc_sys_make_inode(struct super_block *sb,
> }
>
> if (root->set_ownership)
> - root->set_ownership(head, table, &inode->i_uid, &inode->i_gid);
> + root->set_ownership(head, &inode->i_uid, &inode->i_gid);
> else {
> inode->i_uid = GLOBAL_ROOT_UID;
> inode->i_gid = GLOBAL_ROOT_GID;
> diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
> index ee7d33b89e9e..60333a6b9370 100644
> --- a/include/linux/sysctl.h
> +++ b/include/linux/sysctl.h
> @@ -205,7 +205,6 @@ struct ctl_table_root {
> struct ctl_table_set default_set;
> struct ctl_table_set *(*lookup)(struct ctl_table_root *root);
> void (*set_ownership)(struct ctl_table_header *head,
> - struct ctl_table *table,
> kuid_t *uid, kgid_t *gid);
> int (*permissions)(struct ctl_table_header *head, struct ctl_table *table);
> };
> diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c
> index 45cb1dabce29..1a5085e5b178 100644
> --- a/ipc/ipc_sysctl.c
> +++ b/ipc/ipc_sysctl.c
> @@ -192,7 +192,6 @@ static int set_is_seen(struct ctl_table_set *set)
> }
>
> static void ipc_set_ownership(struct ctl_table_header *head,
> - struct ctl_table *table,
> kuid_t *uid, kgid_t *gid)
> {
> struct ipc_namespace *ns =
> @@ -224,7 +223,7 @@ static int ipc_permissions(struct ctl_table_header *head, struct ctl_table *tabl
> kuid_t ns_root_uid;
> kgid_t ns_root_gid;
>
> - ipc_set_ownership(head, table, &ns_root_uid, &ns_root_gid);
> + ipc_set_ownership(head, &ns_root_uid, &ns_root_gid);
>
> if (uid_eq(current_euid(), ns_root_uid))
> mode >>= 6;
> diff --git a/ipc/mq_sysctl.c b/ipc/mq_sysctl.c
> index 21fba3a6edaf..6bb1c5397c69 100644
> --- a/ipc/mq_sysctl.c
> +++ b/ipc/mq_sysctl.c
> @@ -78,7 +78,6 @@ static int set_is_seen(struct ctl_table_set *set)
> }
>
> static void mq_set_ownership(struct ctl_table_header *head,
> - struct ctl_table *table,
> kuid_t *uid, kgid_t *gid)
> {
> struct ipc_namespace *ns =
> @@ -97,7 +96,7 @@ static int mq_permissions(struct ctl_table_header *head, struct ctl_table *table
> kuid_t ns_root_uid;
> kgid_t ns_root_gid;
>
> - mq_set_ownership(head, table, &ns_root_uid, &ns_root_gid);
> + mq_set_ownership(head, &ns_root_uid, &ns_root_gid);
>
> if (uid_eq(current_euid(), ns_root_uid))
> mode >>= 6;
> diff --git a/net/sysctl_net.c b/net/sysctl_net.c
> index 051ed5f6fc93..a0a7a79991f9 100644
> --- a/net/sysctl_net.c
> +++ b/net/sysctl_net.c
> @@ -54,7 +54,6 @@ static int net_ctl_permissions(struct ctl_table_header *head,
> }
>
> static void net_ctl_set_ownership(struct ctl_table_header *head,
> - struct ctl_table *table,
> kuid_t *uid, kgid_t *gid)
> {
> struct net *net = container_of(head->set, struct net, sysctls);
>
> --
> 2.44.0
>
--
Joel Granados