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Message-Id: <20251013-jag-sysctl_conv-v1-2-4dc35ceae733@kernel.org>
Date: Mon, 13 Oct 2025 15:24:52 +0200
From: Joel Granados <joel.granados@...nel.org>
To: Alexander Viro <viro@...iv.linux.org.uk>,
Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>,
Kees Cook <kees@...nel.org>
Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
Joel Granados <joel.granados@...nel.org>
Subject: [PATCH 2/8] sysctl: Remove superfluous tbl_data param from "dovec"
functions
Remove superfluous tbl_data param from do_proc_douintvec{,_r,_w}
and __do_proc_do{intvec,uintvec,ulongvec_minmax}. There is no need to
pass it as it is always contained within the ctl_table struct.
Signed-off-by: Joel Granados <joel.granados@...nel.org>
---
kernel/sysctl.c | 61 ++++++++++++++++++++++++---------------------------------
1 file changed, 26 insertions(+), 35 deletions(-)
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index f0a691ffb29067a019a857a62fa56185aab06c61..0e249a1f99fec084db649782f5ef8b37e40c6a7c 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -398,22 +398,22 @@ static int do_proc_douintvec_conv(unsigned long *lvalp,
static const char proc_wspace_sep[] = { ' ', '\t', '\n' };
-static int __do_proc_dointvec(void *tbl_data, const struct ctl_table *table,
- int write, void *buffer,
- size_t *lenp, loff_t *ppos,
- int (*conv)(bool *negp, unsigned long *lvalp, int *valp,
- int write, const struct ctl_table *table))
+static int __do_proc_dointvec(const struct ctl_table *table, int write,
+ void *buffer, size_t *lenp, loff_t *ppos,
+ int (*conv)(bool *negp, unsigned long *lvalp,
+ int *valp, int write,
+ const struct ctl_table *table))
{
int *i, vleft, first = 1, err = 0;
size_t left;
char *p;
- if (!tbl_data || !table->maxlen || !*lenp || (*ppos && !write)) {
+ if (!table->data || !table->maxlen || !*lenp || (*ppos && !write)) {
*lenp = 0;
return 0;
}
- i = (int *) tbl_data;
+ i = (int *) table->data;
vleft = table->maxlen / sizeof(*i);
left = *lenp;
@@ -475,13 +475,10 @@ static int do_proc_dointvec(const struct ctl_table *table, int write,
int (*conv)(bool *negp, unsigned long *lvalp, int *valp,
int write, const struct ctl_table *table))
{
- return __do_proc_dointvec(table->data, table, write,
- buffer, lenp, ppos, conv);
+ return __do_proc_dointvec(table, write, buffer, lenp, ppos, conv);
}
-static int do_proc_douintvec_w(unsigned int *tbl_data,
- const struct ctl_table *table,
- void *buffer,
+static int do_proc_douintvec_w(const struct ctl_table *table, void *buffer,
size_t *lenp, loff_t *ppos,
int (*conv)(unsigned long *lvalp,
unsigned int *valp, int write,
@@ -515,7 +512,7 @@ static int do_proc_douintvec_w(unsigned int *tbl_data,
goto out_free;
}
- if (conv(&lval, tbl_data, 1, table)) {
+ if (conv(&lval, (unsigned int *) table->data, 1, table)) {
err = -EINVAL;
goto out_free;
}
@@ -535,8 +532,7 @@ static int do_proc_douintvec_w(unsigned int *tbl_data,
return err;
}
-static int do_proc_douintvec_r(unsigned int *tbl_data,
- const struct ctl_table *table, void *buffer,
+static int do_proc_douintvec_r(const struct ctl_table *table, void *buffer,
size_t *lenp, loff_t *ppos,
int (*conv)(unsigned long *lvalp,
unsigned int *valp, int write,
@@ -548,7 +544,7 @@ static int do_proc_douintvec_r(unsigned int *tbl_data,
left = *lenp;
- if (conv(&lval, tbl_data, 0, table)) {
+ if (conv(&lval, (unsigned int *) table->data, 0, table)) {
err = -EINVAL;
goto out;
}
@@ -566,22 +562,20 @@ static int do_proc_douintvec_r(unsigned int *tbl_data,
return err;
}
-static int __do_proc_douintvec(void *tbl_data, const struct ctl_table *table,
- int write, void *buffer,
- size_t *lenp, loff_t *ppos,
+static int __do_proc_douintvec(const struct ctl_table *table, int write,
+ void *buffer, size_t *lenp, loff_t *ppos,
int (*conv)(unsigned long *lvalp,
unsigned int *valp, int write,
const struct ctl_table *table))
{
- unsigned int *i, vleft;
+ unsigned int vleft;
- if (!tbl_data || !table->maxlen || !*lenp || (*ppos && !write)) {
+ if (!table->data || !table->maxlen || !*lenp || (*ppos && !write)) {
*lenp = 0;
return 0;
}
- i = (unsigned int *) tbl_data;
- vleft = table->maxlen / sizeof(*i);
+ vleft = table->maxlen / sizeof(unsigned int);
/*
* Arrays are not supported, keep this simple. *Do not* add
@@ -596,9 +590,8 @@ static int __do_proc_douintvec(void *tbl_data, const struct ctl_table *table,
conv = do_proc_douintvec_conv;
if (write)
- return do_proc_douintvec_w(i, table, buffer, lenp, ppos,
- conv);
- return do_proc_douintvec_r(i, table, buffer, lenp, ppos, conv);
+ return do_proc_douintvec_w(table, buffer, lenp, ppos, conv);
+ return do_proc_douintvec_r(table, buffer, lenp, ppos, conv);
}
int do_proc_douintvec(const struct ctl_table *table, int write,
@@ -607,8 +600,7 @@ int do_proc_douintvec(const struct ctl_table *table, int write,
unsigned int *valp, int write,
const struct ctl_table *table))
{
- return __do_proc_douintvec(table->data, table, write, buffer, lenp,
- ppos, conv);
+ return __do_proc_douintvec(table, write, buffer, lenp, ppos, conv);
}
/**
@@ -839,9 +831,8 @@ int proc_dou8vec_minmax(const struct ctl_table *table, int write,
}
EXPORT_SYMBOL_GPL(proc_dou8vec_minmax);
-static int __do_proc_doulongvec_minmax(void *data,
- const struct ctl_table *table, int write,
- void *buffer, size_t *lenp, loff_t *ppos,
+static int __do_proc_doulongvec_minmax(const struct ctl_table *table,
+ int write, void *buffer, size_t *lenp, loff_t *ppos,
unsigned long convmul, unsigned long convdiv)
{
unsigned long *i, *min, *max;
@@ -849,12 +840,12 @@ static int __do_proc_doulongvec_minmax(void *data,
size_t left;
char *p;
- if (!data || !table->maxlen || !*lenp || (*ppos && !write)) {
+ if (!table->data || !table->maxlen || !*lenp || (*ppos && !write)) {
*lenp = 0;
return 0;
}
- i = data;
+ i = table->data;
min = table->extra1;
max = table->extra2;
vleft = table->maxlen / sizeof(unsigned long);
@@ -917,8 +908,8 @@ static int do_proc_doulongvec_minmax(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos, unsigned long convmul,
unsigned long convdiv)
{
- return __do_proc_doulongvec_minmax(table->data, table, write,
- buffer, lenp, ppos, convmul, convdiv);
+ return __do_proc_doulongvec_minmax(table, write, buffer, lenp, ppos,
+ convmul, convdiv);
}
/**
--
2.50.1
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