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| author |   Emil Velikov <emil.l.velikov@gmail.com> | 2020-05-13 22:43:42 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-05-15 14:53:19 +0200 |
| commit | 23cbedf812ff7c7751582928e32d953d84c1c821 (patch) | |
| tree | 4b055d22cf349acc2b1c311a06fc4fea4f7239bb /include/linux/sysrq.h | |
| parent | tty/sysrq: alpha: export and use __sysrq_get_key_op() (diff) | |
| download | wireguard-linux-23cbedf812ff7c7751582928e32d953d84c1c821.tar.xz wireguard-linux-23cbedf812ff7c7751582928e32d953d84c1c821.zip | |
tty/sysrq: constify the sysrq API
The user is not supposed to thinker with the underlying sysrq_key_op.
Make that explicit by adding a handful of const notations.
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Link: https://lore.kernel.org/r/20200513214351.2138580-2-emil.l.velikov@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/sysrq.h')
| -rw-r--r-- | include/linux/sysrq.h | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/include/linux/sysrq.h b/include/linux/sysrq.h index 9b51f98e5f60..479028391c08 100644 --- a/include/linux/sysrq.h +++ b/include/linux/sysrq.h @@ -30,10 +30,10 @@ #define SYSRQ_ENABLE_RTNICE 0x0100 struct sysrq_key_op { - void (*handler)(int); - char *help_msg; - char *action_msg; - int enable_mask; + void (* const handler)(int); + const char * const help_msg; + const char * const action_msg; + const int enable_mask; }; #ifdef CONFIG_MAGIC_SYSRQ @@ -45,8 +45,8 @@ struct sysrq_key_op { void handle_sysrq(int key); void __handle_sysrq(int key, bool check_mask); -int register_sysrq_key(int key, struct sysrq_key_op *op); -int unregister_sysrq_key(int key, struct sysrq_key_op *op); +int register_sysrq_key(int key, const struct sysrq_key_op *op); +int unregister_sysrq_key(int key, const struct sysrq_key_op *op); extern struct sysrq_key_op *__sysrq_reboot_op; int sysrq_toggle_support(int enable_mask); @@ -62,12 +62,12 @@ static inline void __handle_sysrq(int key, bool check_mask) { } -static inline int register_sysrq_key(int key, struct sysrq_key_op *op) +static inline int register_sysrq_key(int key, const struct sysrq_key_op *op) { return -EINVAL; } -static inline int unregister_sysrq_key(int key, struct sysrq_key_op *op) +static inline int unregister_sysrq_key(int key, const struct sysrq_key_op *op) { return -EINVAL; } |