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Commit 4c9309c0 authored by Alexey Dobriyan's avatar Alexey Dobriyan Committed by NeilBrown
Browse files

md: convert to kstrto*() 



Convert away from deprecated simple_strto*() functions.

Add "fit into sector_t" checks.

Signed-off-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: default avatarNeilBrown <neilb@suse.de>
parent c31df25f

drivers/md/md.c

+81 −68
Original line number Diff line number Diff line
@@ -2630,14 +2630,15 @@ errors_show(struct md_rdev *rdev, char *page) 
static ssize_t

errors_store(struct md_rdev *rdev, const char *buf, size_t len)

{

	char *e;

	unsigned long n = simple_strtoul(buf, &e, 10);

	if (*buf && (*e == 0 || *e == '\n')) {

	unsigned int n;

	int rv;



	rv = kstrtouint(buf, 10, &n);

	if (rv < 0)

		return rv;

	atomic_set(&rdev->corrected_errors, n);

	return len;

}

	return -EINVAL;

}

static struct rdev_sysfs_entry rdev_errors =

__ATTR(errors, S_IRUGO|S_IWUSR, errors_show, errors_store);
@@ -2653,13 +2654,16 @@ slot_show(struct md_rdev *rdev, char *page) 
static ssize_t

slot_store(struct md_rdev *rdev, const char *buf, size_t len)

{

	char *e;

	int slot;

	int err;

	int slot = simple_strtoul(buf, &e, 10);



	if (strncmp(buf, "none", 4)==0)

		slot = -1;

	else if (e==buf || (*e && *e!= '\n'))

		return -EINVAL;

	else {

		err = kstrtouint(buf, 10, (unsigned int *)&slot);

		if (err < 0)

			return err;

	}

	if (rdev->mddev->pers && slot == -1) {

		/* Setting 'slot' on an active array requires also

		 * updating the 'rd%d' link, and communicating
@@ -3544,12 +3548,12 @@ layout_show(struct mddev *mddev, char *page) 
static ssize_t

layout_store(struct mddev *mddev, const char *buf, size_t len)

{

	char *e;

	unsigned long n = simple_strtoul(buf, &e, 10);

	unsigned int n;

	int err;



	if (!*buf || (*e && *e != '\n'))

		return -EINVAL;

	err = kstrtouint(buf, 10, &n);

	if (err < 0)

		return err;

	err = mddev_lock(mddev);

	if (err)

		return err;
@@ -3593,12 +3597,12 @@ static int update_raid_disks(struct mddev *mddev, int raid_disks); 
static ssize_t

raid_disks_store(struct mddev *mddev, const char *buf, size_t len)

{

	char *e;

	unsigned int n;

	int err;

	unsigned long n = simple_strtoul(buf, &e, 10);



	if (!*buf || (*e && *e != '\n'))

		return -EINVAL;

	err = kstrtouint(buf, 10, &n);

	if (err < 0)

		return err;



	err = mddev_lock(mddev);

	if (err)
@@ -3645,12 +3649,12 @@ chunk_size_show(struct mddev *mddev, char *page) 
static ssize_t

chunk_size_store(struct mddev *mddev, const char *buf, size_t len)

{

	unsigned long n;

	int err;

	char *e;

	unsigned long n = simple_strtoul(buf, &e, 10);



	if (!*buf || (*e && *e != '\n'))

		return -EINVAL;

	err = kstrtoul(buf, 10, &n);

	if (err < 0)

		return err;



	err = mddev_lock(mddev);

	if (err)
@@ -3688,19 +3692,24 @@ resync_start_show(struct mddev *mddev, char *page) 
static ssize_t

resync_start_store(struct mddev *mddev, const char *buf, size_t len)

{

	unsigned long long n;

	int err;

	char *e;

	unsigned long long n = simple_strtoull(buf, &e, 10);



	if (cmd_match(buf, "none"))

		n = MaxSector;

	else {

		err = kstrtoull(buf, 10, &n);

		if (err < 0)

			return err;

		if (n != (sector_t)n)

			return -EINVAL;

	}



	err = mddev_lock(mddev);

	if (err)

		return err;

	if (mddev->pers && !test_bit(MD_RECOVERY_FROZEN, &mddev->recovery))

		err = -EBUSY;

	else if (cmd_match(buf, "none"))

		n = MaxSector;

	else if (!*buf || (*e && *e != '\n'))

		err = -EINVAL;



	if (!err) {

		mddev->recovery_cp = n;
@@ -3936,15 +3945,15 @@ max_corrected_read_errors_show(struct mddev *mddev, char *page) { 
static ssize_t

max_corrected_read_errors_store(struct mddev *mddev, const char *buf, size_t len)

{

	char *e;

	unsigned long n = simple_strtoul(buf, &e, 10);

	unsigned int n;

	int rv;



	if (*buf && (*e == 0 || *e == '\n')) {

	rv = kstrtouint(buf, 10, &n);

	if (rv < 0)

		return rv;

	atomic_set(&mddev->max_corr_read_errors, n);

	return len;

}

	return -EINVAL;

}



static struct md_sysfs_entry max_corr_read_errors =

__ATTR(max_read_errors, S_IRUGO|S_IWUSR, max_corrected_read_errors_show,
@@ -4300,15 +4309,18 @@ sync_min_show(struct mddev *mddev, char *page) 
static ssize_t

sync_min_store(struct mddev *mddev, const char *buf, size_t len)

{

	int min;

	char *e;

	unsigned int min;

	int rv;



	if (strncmp(buf, "system", 6)==0) {

		mddev->sync_speed_min = 0;

		return len;

	}

	min = simple_strtoul(buf, &e, 10);

	if (buf == e || (*e && *e != '\n') || min <= 0)

		min = 0;

	} else {

		rv = kstrtouint(buf, 10, &min);

		if (rv < 0)

			return rv;

		if (min == 0)

			return -EINVAL;

	}

	mddev->sync_speed_min = min;

	return len;

}
@@ -4326,15 +4338,18 @@ sync_max_show(struct mddev *mddev, char *page) 
static ssize_t

sync_max_store(struct mddev *mddev, const char *buf, size_t len)

{

	int max;

	char *e;

	unsigned int max;

	int rv;



	if (strncmp(buf, "system", 6)==0) {

		mddev->sync_speed_max = 0;

		return len;

	}

	max = simple_strtoul(buf, &e, 10);

	if (buf == e || (*e && *e != '\n') || max <= 0)

		max = 0;

	} else {

		rv = kstrtouint(buf, 10, &max);

		if (rv < 0)

			return rv;

		if (max == 0)

			return -EINVAL;

	}

	mddev->sync_speed_max = max;

	return len;

}
@@ -4517,12 +4532,13 @@ suspend_lo_show(struct mddev *mddev, char *page) 
static ssize_t

suspend_lo_store(struct mddev *mddev, const char *buf, size_t len)

{

	char *e;

	unsigned long long new = simple_strtoull(buf, &e, 10);

	unsigned long long old;

	unsigned long long old, new;

	int err;



	if (buf == e || (*e && *e != '\n'))

	err = kstrtoull(buf, 10, &new);

	if (err < 0)

		return err;

	if (new != (sector_t)new)

		return -EINVAL;



	err = mddev_lock(mddev);
@@ -4559,12 +4575,13 @@ suspend_hi_show(struct mddev *mddev, char *page) 
static ssize_t

suspend_hi_store(struct mddev *mddev, const char *buf, size_t len)

{

	char *e;

	unsigned long long new = simple_strtoull(buf, &e, 10);

	unsigned long long old;

	unsigned long long old, new;

	int err;



	if (buf == e || (*e && *e != '\n'))

	err = kstrtoull(buf, 10, &new);

	if (err < 0)

		return err;

	if (new != (sector_t)new)

		return -EINVAL;



	err = mddev_lock(mddev);
@@ -4606,11 +4623,13 @@ static ssize_t 
reshape_position_store(struct mddev *mddev, const char *buf, size_t len)

{

	struct md_rdev *rdev;

	char *e;

	unsigned long long new;

	int err;

	unsigned long long new = simple_strtoull(buf, &e, 10);



	if (buf == e || (*e && *e != '\n'))

	err = kstrtoull(buf, 10, &new);

	if (err < 0)

		return err;

	if (new != (sector_t)new)

		return -EINVAL;

	err = mddev_lock(mddev);

	if (err)
@@ -9013,13 +9032,7 @@ static int get_ro(char *buffer, struct kernel_param *kp) 
}

static int set_ro(const char *val, struct kernel_param *kp)

{

	char *e;

	int num = simple_strtoul(val, &e, 10);

	if (*val && (*e == '\0' || *e == '\n')) {

		start_readonly = num;

		return 0;

	}

	return -EINVAL;

	return kstrtouint(val, 10, (unsigned int *)&start_readonly);

}



module_param_call(start_ro, set_ro, get_ro, NULL, S_IRUSR|S_IWUSR);