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params: lift param_set_uint_minmax to common code
It is a useful helper hence move it to common code so others can enjoy it. Suggested-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de>
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@ -431,6 +431,8 @@ extern int param_get_int(char *buffer, const struct kernel_param *kp);
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extern const struct kernel_param_ops param_ops_uint;
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extern int param_set_uint(const char *val, const struct kernel_param *kp);
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extern int param_get_uint(char *buffer, const struct kernel_param *kp);
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int param_set_uint_minmax(const char *val, const struct kernel_param *kp,
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unsigned int min, unsigned int max);
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#define param_check_uint(name, p) __param_check(name, p, unsigned int)
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extern const struct kernel_param_ops param_ops_long;
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@ -243,6 +243,24 @@ STANDARD_PARAM_DEF(ulong, unsigned long, "%lu", kstrtoul);
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STANDARD_PARAM_DEF(ullong, unsigned long long, "%llu", kstrtoull);
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STANDARD_PARAM_DEF(hexint, unsigned int, "%#08x", kstrtouint);
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int param_set_uint_minmax(const char *val, const struct kernel_param *kp,
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unsigned int min, unsigned int max)
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{
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unsigned int num;
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int ret;
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if (!val)
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return -EINVAL;
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ret = kstrtouint(val, 0, &num);
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if (ret)
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return ret;
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if (num < min || num > max)
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return -EINVAL;
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*((unsigned int *)kp->arg) = num;
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return 0;
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}
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EXPORT_SYMBOL_GPL(param_set_uint_minmax);
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int param_set_charp(const char *val, const struct kernel_param *kp)
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{
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if (strlen(val) > 1024) {
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@ -3149,24 +3149,6 @@ void cleanup_socket_xprt(void)
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xprt_unregister_transport(&xs_bc_tcp_transport);
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}
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static int param_set_uint_minmax(const char *val,
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const struct kernel_param *kp,
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unsigned int min, unsigned int max)
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{
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unsigned int num;
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int ret;
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if (!val)
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return -EINVAL;
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ret = kstrtouint(val, 0, &num);
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if (ret)
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return ret;
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if (num < min || num > max)
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return -EINVAL;
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*((unsigned int *)kp->arg) = num;
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return 0;
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}
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static int param_set_portnr(const char *val, const struct kernel_param *kp)
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{
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return param_set_uint_minmax(val, kp,
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