sysctl: treewide: constify the ctl_table argument of proc_handlers
Adapt the proc_hander function signature to make it clear that handlers
are not supposed to modify their ctl_table argument.
This is also a prerequisite to moving the static ctl_table structs into
read-only data.
The patch was mostly generated by coccinelle with the following script:
@@
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)
{ ... }
In addition to the scripted changes some other changes are done:
* The "typedef proc_handler" in include/linux/sysctl.h is changed to use
the "const ctl_table".
* The prototypes of non-static handlers in header-files are adapted
to match the changes of their respective definitions.
* kernel/watchdog.c: proc_watchdog_common()
This is called from a proc_handler itself and is als calling back
into another proc_handler, making it necessary to change it as part
of the proc_handler migration.
No functional change.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
93 files changed
