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sysctl: treewide: constify the ctl_table argument of proc_handlers

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const qualify the struct ctl_table argument in the proc_handler function
signatures. This is a prerequisite to moving the static ctl_table
structs into .rodata data which will ensure that proc_handler function
pointers cannot be modified.

This patch has been generated by the following coccinelle script:

```
  virtual patch

  @r1@
  identifier ctl, write, buffer, lenp, ppos;
  identifier func !~ "appldata_(timer|interval)_handler|sched_(rt|rr)_handler|rds_tcp_skbuf_handler|proc_sctp_do_(hmac_alg|rto_min|rto_max|udp_port|alpha_beta|auth|probe_interval)";
  @@

  int func(
  - struct ctl_table *ctl
  + const struct ctl_table *ctl
    ,int write, void *buffer, size_t *lenp, loff_t *ppos);

  @r2@
  identifier func, ctl, write, buffer, lenp, ppos;
  @@

  int func(
  - struct ctl_table *ctl
  + const struct ctl_table *ctl
    ,int write, void *buffer, size_t *lenp, loff_t *ppos)
  { ... }

  @r3@
  identifier func;
  @@

  int func(
  - struct ctl_table *
  + const struct ctl_table *
    ,int , void *, size_t *, loff_t *);

  @r4@
  identifier func, ctl;
  @@

  int func(
  - struct ctl_table *ctl
  + const struct ctl_table *ctl
    ,int , void *, size_t *, loff_t *);

  @r5@
  identifier func, write, buffer, lenp, ppos;
  @@

  int func(
  - struct ctl_table *
  + const struct ctl_table *
    ,int write, void *buffer, size_t *lenp, loff_t *ppos);

```

* Code formatting was adjusted in xfs_sysctl.c to comply with code
  conventions. The xfs_stats_clear_proc_handler,
  xfs_panic_mask_proc_handler and xfs_deprecated_dointvec_minmax where
  adjusted.

* The ctl_table argument in proc_watchdog_common was const qualified.
  This is called from a proc_handler itself and is calling back into
  another proc_handler, making it necessary to change it as part of the
  proc_handler migration.

Co-developed-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Co-developed-by: Joel Granados <j.granados@samsung.com>
Signed-off-by: Joel Granados <j.granados@samsung.com>
This commit is contained in:
Joel Granados
2024-07-24 20:59:29 +02:00
parent 7a3fad30fd
commit 78eb4ea25c
93 changed files with 258 additions and 258 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm64/kernel/armv8_deprecated.c
View File

@@ -507,7 +507,7 @@ static int update_insn_emulation_mode(struct insn_emulation *insn,
return ret;
}
static int emulation_proc_handler(struct ctl_table *table, int write,
static int emulation_proc_handler(const struct ctl_table *table, int write,
void *buffer, size_t *lenp,
loff_t *ppos)
{

2
arch/arm64/kernel/fpsimd.c
View File

@@ -535,7 +535,7 @@ static unsigned int find_supported_vector_length(enum vec_type type,
#if defined(CONFIG_ARM64_SVE) && defined(CONFIG_SYSCTL)
static int vec_proc_do_default_vl(struct ctl_table *table, int write,
static int vec_proc_do_default_vl(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
struct vl_info *info = table->extra1;

10
arch/s390/appldata/appldata_base.c
View File

@@ -46,9 +46,9 @@
* /proc entries (sysctl)
*/
static const char appldata_proc_name[APPLDATA_PROC_NAME_LENGTH] = "appldata";
static int appldata_timer_handler(struct ctl_table *ctl, int write,
static int appldata_timer_handler(const struct ctl_table *ctl, int write,
void *buffer, size_t *lenp, loff_t *ppos);
static int appldata_interval_handler(struct ctl_table *ctl, int write,
static int appldata_interval_handler(const struct ctl_table *ctl, int write,
void *buffer, size_t *lenp, loff_t *ppos);
static struct ctl_table_header *appldata_sysctl_header;
@@ -199,7 +199,7 @@ static void __appldata_vtimer_setup(int cmd)
* Start/Stop timer, show status of timer (0 = not active, 1 = active)
*/
static int
appldata_timer_handler(struct ctl_table *ctl, int write,
appldata_timer_handler(const struct ctl_table *ctl, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
int timer_active = appldata_timer_active;
@@ -232,7 +232,7 @@ appldata_timer_handler(struct ctl_table *ctl, int write,
* current timer interval.
*/
static int
appldata_interval_handler(struct ctl_table *ctl, int write,
appldata_interval_handler(const struct ctl_table *ctl, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
int interval = appldata_interval;
@@ -262,7 +262,7 @@ appldata_interval_handler(struct ctl_table *ctl, int write,
* monitoring (0 = not in process, 1 = in process)
*/
static int
appldata_generic_handler(struct ctl_table *ctl, int write,
appldata_generic_handler(const struct ctl_table *ctl, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
struct appldata_ops *ops = NULL, *tmp_ops;

2
arch/s390/kernel/debug.c
View File

@@ -954,7 +954,7 @@ static int debug_active = 1;
* always allow read, allow write only if debug_stoppable is set or
* if debug_active is already off
*/
static int s390dbf_procactive(struct ctl_table *table, int write,
static int s390dbf_procactive(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
if (!write || debug_stoppable || !debug_active)

2
arch/s390/kernel/topology.c
View File

@@ -594,7 +594,7 @@ static int __init topology_setup(char *str)
}
early_param("topology", topology_setup);
static int topology_ctl_handler(struct ctl_table *ctl, int write,
static int topology_ctl_handler(const struct ctl_table *ctl, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
int enabled = topology_is_enabled();

6
arch/s390/mm/cmm.c
View File

@@ -243,7 +243,7 @@ static int cmm_skip_blanks(char *cp, char **endp)
return str != cp;
}
static int cmm_pages_handler(struct ctl_table *ctl, int write,
static int cmm_pages_handler(const struct ctl_table *ctl, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
long nr = cmm_get_pages();
@@ -262,7 +262,7 @@ static int cmm_pages_handler(struct ctl_table *ctl, int write,
return 0;
}
static int cmm_timed_pages_handler(struct ctl_table *ctl, int write,
static int cmm_timed_pages_handler(const struct ctl_table *ctl, int write,
void *buffer, size_t *lenp,
loff_t *ppos)
{
@@ -282,7 +282,7 @@ static int cmm_timed_pages_handler(struct ctl_table *ctl, int write,
return 0;
}
static int cmm_timeout_handler(struct ctl_table *ctl, int write,
static int cmm_timeout_handler(const struct ctl_table *ctl, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
char buf[64], *p;

2
arch/x86/kernel/itmt.c
View File

@@ -38,7 +38,7 @@ static bool __read_mostly sched_itmt_capable;
*/
unsigned int __read_mostly sysctl_sched_itmt_enabled;
static int sched_itmt_update_handler(struct ctl_table *table, int write,
static int sched_itmt_update_handler(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
unsigned int old_sysctl;