[ndctl PATCH 2/4] ndctl: add ndctl_encode_smart_temperature()

This provides for encoding of a human-readable temperature value into the format expected by the smart command Cc: Dan Williams <dan.j.williams(a)intel.com&gt; Signed-off-by: Vishal Verma <vishal.l.verma(a)intel.com&gt; --- ndctl/lib/libndctl.c | 16 ++++++++++++++++ ndctl/lib/libndctl.sym | 1 + ndctl/libndctl.h | 1 + 3 files changed, 18 insertions(+) diff --git a/ndctl/lib/libndctl.c b/ndctl/lib/libndctl.c index 4119a2e..ed5a65b 100644 --- a/ndctl/lib/libndctl.c +++ b/ndctl/lib/libndctl.c @@ -87,6 +87,22 @@ NDCTL_EXPORT double ndctl_decode_smart_temperature(unsigned int temp) return t; } +NDCTL_EXPORT unsigned int ndctl_encode_smart_temperature(double temp) +{ + bool negative = false; + unsigned int t; + + if (temp < 0) { + negative = true; + temp *= -1; + } + t = temp; + t *= 16; + if (negative) + t |= (1 << 15); + return t; +} + struct ndctl_ctx; /** diff --git a/ndctl/lib/libndctl.sym b/ndctl/lib/libndctl.sym index c160847..e7f9675 100644 --- a/ndctl/lib/libndctl.sym +++ b/ndctl/lib/libndctl.sym @@ -322,6 +322,7 @@ global: ndctl_cmd_smart_threshold_set_ctrl_temperature; ndctl_cmd_smart_threshold_set_spares; ndctl_decode_smart_temperature; + ndctl_encode_smart_temperature; ndctl_dimm_cmd_new_smart_inject; ndctl_cmd_smart_inject_media_temperature; ndctl_cmd_smart_inject_spares; diff --git a/ndctl/libndctl.h b/ndctl/libndctl.h index bd33d39..6091ff3 100644 --- a/ndctl/libndctl.h +++ b/ndctl/libndctl.h @@ -76,6 +76,7 @@ size_t ndctl_min_namespace_size(void); size_t ndctl_sizeof_namespace_index(void); size_t ndctl_sizeof_namespace_label(void); double ndctl_decode_smart_temperature(unsigned int temp); +unsigned int ndctl_encode_smart_temperature(double temp); struct ndctl_ctx; struct ndctl_ctx *ndctl_ref(struct ndctl_ctx *ctx); -- 2.14.3