From 78eb4ea25cd5fdbdae7eb9fdf87b99195ff67508 Mon Sep 17 00:00:00 2001 From: Joel Granados Date: Wed, 24 Jul 2024 20:59:29 +0200 Subject: sysctl: treewide: constify the ctl_table argument of proc_handlers MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Thomas Weißschuh Co-developed-by: Joel Granados Signed-off-by: Joel Granados --- drivers/cdrom/cdrom.c | 4 ++-- drivers/char/random.c | 4 ++-- drivers/macintosh/mac_hid.c | 2 +- drivers/net/vrf.c | 2 +- drivers/parport/procfs.c | 12 ++++++------ drivers/perf/arm_pmuv3.c | 2 +- drivers/perf/riscv_pmu_sbi.c | 2 +- 7 files changed, 14 insertions(+), 14 deletions(-) (limited to 'drivers') diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c index 49e4829b7264..9b0f37d4b9d4 100644 --- a/drivers/cdrom/cdrom.c +++ b/drivers/cdrom/cdrom.c @@ -3473,7 +3473,7 @@ static int cdrom_print_info(const char *header, int val, char *info, return 0; } -static int cdrom_sysctl_info(struct ctl_table *ctl, int write, +static int cdrom_sysctl_info(const struct ctl_table *ctl, int write, void *buffer, size_t *lenp, loff_t *ppos) { int pos; @@ -3586,7 +3586,7 @@ static void cdrom_update_settings(void) mutex_unlock(&cdrom_mutex); } -static int cdrom_sysctl_handler(struct ctl_table *ctl, int write, +static int cdrom_sysctl_handler(const struct ctl_table *ctl, int write, void *buffer, size_t *lenp, loff_t *ppos) { int ret; diff --git a/drivers/char/random.c b/drivers/char/random.c index b02a12436750..87fe61295ea1 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -1620,7 +1620,7 @@ static u8 sysctl_bootid[UUID_SIZE]; * UUID. The difference is in whether table->data is NULL; if it is, * then a new UUID is generated and returned to the user. */ -static int proc_do_uuid(struct ctl_table *table, int write, void *buf, +static int proc_do_uuid(const struct ctl_table *table, int write, void *buf, size_t *lenp, loff_t *ppos) { u8 tmp_uuid[UUID_SIZE], *uuid; @@ -1651,7 +1651,7 @@ static int proc_do_uuid(struct ctl_table *table, int write, void *buf, } /* The same as proc_dointvec, but writes don't change anything. */ -static int proc_do_rointvec(struct ctl_table *table, int write, void *buf, +static int proc_do_rointvec(const struct ctl_table *table, int write, void *buf, size_t *lenp, loff_t *ppos) { return write ? 0 : proc_dointvec(table, 0, buf, lenp, ppos); diff --git a/drivers/macintosh/mac_hid.c b/drivers/macintosh/mac_hid.c index b7b3ef1e58dc..b461b1bed25b 100644 --- a/drivers/macintosh/mac_hid.c +++ b/drivers/macintosh/mac_hid.c @@ -183,7 +183,7 @@ static void mac_hid_stop_emulation(void) mac_hid_destroy_emumouse(); } -static int mac_hid_toggle_emumouse(struct ctl_table *table, int write, +static int mac_hid_toggle_emumouse(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { int *valp = table->data; diff --git a/drivers/net/vrf.c b/drivers/net/vrf.c index 9af316cdd8b3..040f0bb36c0e 100644 --- a/drivers/net/vrf.c +++ b/drivers/net/vrf.c @@ -1886,7 +1886,7 @@ unlock: return res; } -static int vrf_shared_table_handler(struct ctl_table *table, int write, +static int vrf_shared_table_handler(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { struct net *net = (struct net *)table->extra1; diff --git a/drivers/parport/procfs.c b/drivers/parport/procfs.c index c2e371c50dcf..3ef486cd3d6d 100644 --- a/drivers/parport/procfs.c +++ b/drivers/parport/procfs.c @@ -33,7 +33,7 @@ #define PARPORT_MIN_SPINTIME_VALUE 1 #define PARPORT_MAX_SPINTIME_VALUE 1000 -static int do_active_device(struct ctl_table *table, int write, +static int do_active_device(const struct ctl_table *table, int write, void *result, size_t *lenp, loff_t *ppos) { struct parport *port = (struct parport *)table->extra1; @@ -70,7 +70,7 @@ static int do_active_device(struct ctl_table *table, int write, } #ifdef CONFIG_PARPORT_1284 -static int do_autoprobe(struct ctl_table *table, int write, +static int do_autoprobe(const struct ctl_table *table, int write, void *result, size_t *lenp, loff_t *ppos) { struct parport_device_info *info = table->extra2; @@ -113,7 +113,7 @@ static int do_autoprobe(struct ctl_table *table, int write, } #endif /* IEEE1284.3 support. */ -static int do_hardware_base_addr(struct ctl_table *table, int write, +static int do_hardware_base_addr(const struct ctl_table *table, int write, void *result, size_t *lenp, loff_t *ppos) { struct parport *port = (struct parport *)table->extra1; @@ -140,7 +140,7 @@ static int do_hardware_base_addr(struct ctl_table *table, int write, return 0; } -static int do_hardware_irq(struct ctl_table *table, int write, +static int do_hardware_irq(const struct ctl_table *table, int write, void *result, size_t *lenp, loff_t *ppos) { struct parport *port = (struct parport *)table->extra1; @@ -167,7 +167,7 @@ static int do_hardware_irq(struct ctl_table *table, int write, return 0; } -static int do_hardware_dma(struct ctl_table *table, int write, +static int do_hardware_dma(const struct ctl_table *table, int write, void *result, size_t *lenp, loff_t *ppos) { struct parport *port = (struct parport *)table->extra1; @@ -194,7 +194,7 @@ static int do_hardware_dma(struct ctl_table *table, int write, return 0; } -static int do_hardware_modes(struct ctl_table *table, int write, +static int do_hardware_modes(const struct ctl_table *table, int write, void *result, size_t *lenp, loff_t *ppos) { struct parport *port = (struct parport *)table->extra1; diff --git a/drivers/perf/arm_pmuv3.c b/drivers/perf/arm_pmuv3.c index cf0430c266a6..d246840797b6 100644 --- a/drivers/perf/arm_pmuv3.c +++ b/drivers/perf/arm_pmuv3.c @@ -1257,7 +1257,7 @@ static void armv8pmu_disable_user_access_ipi(void *unused) armv8pmu_disable_user_access(); } -static int armv8pmu_proc_user_access_handler(struct ctl_table *table, int write, +static int armv8pmu_proc_user_access_handler(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { int ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos); diff --git a/drivers/perf/riscv_pmu_sbi.c b/drivers/perf/riscv_pmu_sbi.c index 4e842dcedfba..27b42ca509bd 100644 --- a/drivers/perf/riscv_pmu_sbi.c +++ b/drivers/perf/riscv_pmu_sbi.c @@ -1277,7 +1277,7 @@ static void riscv_pmu_update_counter_access(void *info) csr_write(CSR_SCOUNTEREN, 0x2); } -static int riscv_pmu_proc_user_access_handler(struct ctl_table *table, +static int riscv_pmu_proc_user_access_handler(const struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) { -- cgit v1.2.3