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Diffstat (limited to 'kernel/sysctl.c')
-rw-r--r--kernel/sysctl.c115
1 files changed, 49 insertions, 66 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 157f7ce2942d..cb57da499ebb 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -205,7 +205,7 @@ static int _proc_do_string(char *data, int maxlen, int write,
return 0;
}
-static void warn_sysctl_write(struct ctl_table *table)
+static void warn_sysctl_write(const struct ctl_table *table)
{
pr_warn_once("%s wrote to %s when file position was not 0!\n"
"This will not be supported in the future. To silence this\n"
@@ -223,7 +223,7 @@ static void warn_sysctl_write(struct ctl_table *table)
* handlers can ignore the return value.
*/
static bool proc_first_pos_non_zero_ignore(loff_t *ppos,
- struct ctl_table *table)
+ const struct ctl_table *table)
{
if (!*ppos)
return false;
@@ -256,7 +256,7 @@ static bool proc_first_pos_non_zero_ignore(loff_t *ppos,
*
* Returns 0 on success.
*/
-int proc_dostring(struct ctl_table *table, int write,
+int proc_dostring(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
if (write)
@@ -468,7 +468,7 @@ 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, struct ctl_table *table,
+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,
@@ -541,7 +541,7 @@ out:
return err;
}
-static int do_proc_dointvec(struct ctl_table *table, int write,
+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, void *data),
@@ -552,7 +552,7 @@ static int do_proc_dointvec(struct ctl_table *table, int write,
}
static int do_proc_douintvec_w(unsigned int *tbl_data,
- struct ctl_table *table,
+ const struct ctl_table *table,
void *buffer,
size_t *lenp, loff_t *ppos,
int (*conv)(unsigned long *lvalp,
@@ -639,7 +639,7 @@ out:
return err;
}
-static int __do_proc_douintvec(void *tbl_data, struct ctl_table *table,
+static int __do_proc_douintvec(void *tbl_data, const struct ctl_table *table,
int write, void *buffer,
size_t *lenp, loff_t *ppos,
int (*conv)(unsigned long *lvalp,
@@ -675,7 +675,7 @@ static int __do_proc_douintvec(void *tbl_data, struct ctl_table *table,
return do_proc_douintvec_r(i, buffer, lenp, ppos, conv, data);
}
-int do_proc_douintvec(struct ctl_table *table, int write,
+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,
@@ -702,7 +702,7 @@ int do_proc_douintvec(struct ctl_table *table, int write,
*
* Returns 0 on success.
*/
-int proc_dobool(struct ctl_table *table, int write, void *buffer,
+int proc_dobool(const struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
struct ctl_table tmp;
@@ -739,7 +739,7 @@ int proc_dobool(struct ctl_table *table, int write, void *buffer,
*
* Returns 0 on success.
*/
-int proc_dointvec(struct ctl_table *table, int write, void *buffer,
+int proc_dointvec(const struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
return do_proc_dointvec(table, write, buffer, lenp, ppos, NULL, NULL);
@@ -758,7 +758,7 @@ int proc_dointvec(struct ctl_table *table, int write, void *buffer,
*
* Returns 0 on success.
*/
-int proc_douintvec(struct ctl_table *table, int write, void *buffer,
+int proc_douintvec(const struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
return do_proc_douintvec(table, write, buffer, lenp, ppos,
@@ -769,7 +769,7 @@ int proc_douintvec(struct ctl_table *table, int write, void *buffer,
* Taint values can only be increased
* This means we can safely use a temporary.
*/
-static int proc_taint(struct ctl_table *table, int write,
+static int proc_taint(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
struct ctl_table t;
@@ -864,7 +864,7 @@ static int do_proc_dointvec_minmax_conv(bool *negp, unsigned long *lvalp,
*
* Returns 0 on success or -EINVAL on write when the range check fails.
*/
-int proc_dointvec_minmax(struct ctl_table *table, int write,
+int proc_dointvec_minmax(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
struct do_proc_dointvec_minmax_conv_param param = {
@@ -933,7 +933,7 @@ static int do_proc_douintvec_minmax_conv(unsigned long *lvalp,
*
* Returns 0 on success or -ERANGE on write when the range check fails.
*/
-int proc_douintvec_minmax(struct ctl_table *table, int write,
+int proc_douintvec_minmax(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
struct do_proc_douintvec_minmax_conv_param param = {
@@ -961,7 +961,7 @@ int proc_douintvec_minmax(struct ctl_table *table, int write,
*
* Returns 0 on success or an error on write when the range check fails.
*/
-int proc_dou8vec_minmax(struct ctl_table *table, int write,
+int proc_dou8vec_minmax(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
struct ctl_table tmp;
@@ -977,16 +977,10 @@ int proc_dou8vec_minmax(struct ctl_table *table, int write,
if (table->maxlen != sizeof(u8))
return -EINVAL;
- if (table->extra1) {
+ if (table->extra1)
min = *(unsigned int *) table->extra1;
- if (min > 255U)
- return -EINVAL;
- }
- if (table->extra2) {
+ if (table->extra2)
max = *(unsigned int *) table->extra2;
- if (max > 255U)
- return -EINVAL;
- }
tmp = *table;
@@ -1004,7 +998,7 @@ int proc_dou8vec_minmax(struct ctl_table *table, int write,
EXPORT_SYMBOL_GPL(proc_dou8vec_minmax);
#ifdef CONFIG_MAGIC_SYSRQ
-static int sysrq_sysctl_handler(struct ctl_table *table, int write,
+static int sysrq_sysctl_handler(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
int tmp, ret;
@@ -1023,8 +1017,9 @@ static int sysrq_sysctl_handler(struct ctl_table *table, int write,
}
#endif
-static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table,
- int write, void *buffer, size_t *lenp, loff_t *ppos,
+static int __do_proc_doulongvec_minmax(void *data,
+ 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;
@@ -1096,7 +1091,7 @@ out:
return err;
}
-static int do_proc_doulongvec_minmax(struct ctl_table *table, int write,
+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)
{
@@ -1120,7 +1115,7 @@ static int do_proc_doulongvec_minmax(struct ctl_table *table, int write,
*
* Returns 0 on success.
*/
-int proc_doulongvec_minmax(struct ctl_table *table, int write,
+int proc_doulongvec_minmax(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return do_proc_doulongvec_minmax(table, write, buffer, lenp, ppos, 1l, 1l);
@@ -1143,7 +1138,7 @@ int proc_doulongvec_minmax(struct ctl_table *table, int write,
*
* Returns 0 on success.
*/
-int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
+int proc_doulongvec_ms_jiffies_minmax(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return do_proc_doulongvec_minmax(table, write, buffer,
@@ -1264,14 +1259,14 @@ static int do_proc_dointvec_ms_jiffies_minmax_conv(bool *negp, unsigned long *lv
*
* Returns 0 on success.
*/
-int proc_dointvec_jiffies(struct ctl_table *table, int write,
+int proc_dointvec_jiffies(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return do_proc_dointvec(table,write,buffer,lenp,ppos,
do_proc_dointvec_jiffies_conv,NULL);
}
-int proc_dointvec_ms_jiffies_minmax(struct ctl_table *table, int write,
+int proc_dointvec_ms_jiffies_minmax(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
struct do_proc_dointvec_minmax_conv_param param = {
@@ -1297,7 +1292,7 @@ int proc_dointvec_ms_jiffies_minmax(struct ctl_table *table, int write,
*
* Returns 0 on success.
*/
-int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write,
+int proc_dointvec_userhz_jiffies(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return do_proc_dointvec(table, write, buffer, lenp, ppos,
@@ -1310,7 +1305,6 @@ int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write,
* @write: %TRUE if this is a write to the sysctl file
* @buffer: the user buffer
* @lenp: the size of the user buffer
- * @ppos: file position
* @ppos: the current position in the file
*
* Reads/writes up to table->maxlen/sizeof(unsigned int) integer
@@ -1320,14 +1314,14 @@ int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write,
*
* Returns 0 on success.
*/
-int proc_dointvec_ms_jiffies(struct ctl_table *table, int write, void *buffer,
+int proc_dointvec_ms_jiffies(const struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
return do_proc_dointvec(table, write, buffer, lenp, ppos,
do_proc_dointvec_ms_jiffies_conv, NULL);
}
-static int proc_do_cad_pid(struct ctl_table *table, int write, void *buffer,
+static int proc_do_cad_pid(const struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
struct pid *new_pid;
@@ -1366,7 +1360,7 @@ static int proc_do_cad_pid(struct ctl_table *table, int write, void *buffer,
*
* Returns 0 on success.
*/
-int proc_do_large_bitmap(struct ctl_table *table, int write,
+int proc_do_large_bitmap(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
int err = 0;
@@ -1498,85 +1492,85 @@ int proc_do_large_bitmap(struct ctl_table *table, int write,
#else /* CONFIG_PROC_SYSCTL */
-int proc_dostring(struct ctl_table *table, int write,
+int proc_dostring(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
-int proc_dobool(struct ctl_table *table, int write,
+int proc_dobool(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
-int proc_dointvec(struct ctl_table *table, int write,
+int proc_dointvec(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
-int proc_douintvec(struct ctl_table *table, int write,
+int proc_douintvec(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
-int proc_dointvec_minmax(struct ctl_table *table, int write,
+int proc_dointvec_minmax(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
-int proc_douintvec_minmax(struct ctl_table *table, int write,
+int proc_douintvec_minmax(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
-int proc_dou8vec_minmax(struct ctl_table *table, int write,
+int proc_dou8vec_minmax(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
-int proc_dointvec_jiffies(struct ctl_table *table, int write,
+int proc_dointvec_jiffies(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
-int proc_dointvec_ms_jiffies_minmax(struct ctl_table *table, int write,
+int proc_dointvec_ms_jiffies_minmax(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
-int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write,
+int proc_dointvec_userhz_jiffies(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
-int proc_dointvec_ms_jiffies(struct ctl_table *table, int write,
+int proc_dointvec_ms_jiffies(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
-int proc_doulongvec_minmax(struct ctl_table *table, int write,
+int proc_doulongvec_minmax(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
-int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
+int proc_doulongvec_ms_jiffies_minmax(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}
-int proc_do_large_bitmap(struct ctl_table *table, int write,
+int proc_do_large_bitmap(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
@@ -1585,7 +1579,7 @@ int proc_do_large_bitmap(struct ctl_table *table, int write,
#endif /* CONFIG_PROC_SYSCTL */
#if defined(CONFIG_SYSCTL)
-int proc_do_static_key(struct ctl_table *table, int write,
+int proc_do_static_key(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
struct static_key *key = (struct static_key *)table->data;
@@ -1615,7 +1609,7 @@ int proc_do_static_key(struct ctl_table *table, int write,
return ret;
}
-static struct ctl_table kern_table[] = {
+static const struct ctl_table kern_table[] = {
{
.procname = "panic",
.data = &panic_timeout,
@@ -1710,9 +1704,9 @@ static struct ctl_table kern_table[] = {
{
.procname = "ftrace_dump_on_oops",
.data = &ftrace_dump_on_oops,
- .maxlen = sizeof(int),
+ .maxlen = MAX_TRACER_SIZE,
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = proc_dostring,
},
{
.procname = "traceoff_on_warning",
@@ -1810,15 +1804,6 @@ static struct ctl_table kern_table[] = {
},
#endif
{
- .procname = "pid_max",
- .data = &pid_max,
- .maxlen = sizeof (int),
- .mode = 0644,
- .proc_handler = proc_dointvec_minmax,
- .extra1 = &pid_max_min,
- .extra2 = &pid_max_max,
- },
- {
.procname = "panic_on_oops",
.data = &panic_on_oops,
.maxlen = sizeof(int),
@@ -2034,10 +2019,9 @@ static struct ctl_table kern_table[] = {
.extra2 = SYSCTL_INT_MAX,
},
#endif
- { }
};
-static struct ctl_table vm_table[] = {
+static const struct ctl_table vm_table[] = {
{
.procname = "overcommit_memory",
.data = &sysctl_overcommit_memory,
@@ -2240,7 +2224,6 @@ static struct ctl_table vm_table[] = {
.extra2 = (void *)&mmap_rnd_compat_bits_max,
},
#endif
- { }
};
int __init sysctl_init_bases(void)
generated by cgit (git 2.34.1) at 2025-07-25 17:47:48 +0000