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-rw-r--r--generic/openzfs_sysctl.c104
1 files changed, 104 insertions, 0 deletions
diff --git a/generic/openzfs_sysctl.c b/generic/openzfs_sysctl.c
new file mode 100644
index 0000000..bcd37dc
--- /dev/null
+++ b/generic/openzfs_sysctl.c
@@ -0,0 +1,104 @@
+/*
+htop - generic/openzfs_sysctl.c
+(C) 2014 Hisham H. Muhammad
+Released under the GNU GPLv2+, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "generic/openzfs_sysctl.h"
+
+#include <stdlib.h>
+#include <sys/types.h> // IWYU pragma: keep
+#include <sys/sysctl.h> // needs <sys/types.h> for u_int with gcc
+
+#include "zfs/ZfsArcStats.h"
+
+
+static int MIB_kstat_zfs_misc_arcstats_size[5];
+static int MIB_kstat_zfs_misc_arcstats_c_min[5];
+static int MIB_kstat_zfs_misc_arcstats_c_max[5];
+static int MIB_kstat_zfs_misc_arcstats_mfu_size[5];
+static int MIB_kstat_zfs_misc_arcstats_mru_size[5];
+static int MIB_kstat_zfs_misc_arcstats_anon_size[5];
+static int MIB_kstat_zfs_misc_arcstats_hdr_size[5];
+static int MIB_kstat_zfs_misc_arcstats_other_size[5];
+static int MIB_kstat_zfs_misc_arcstats_compressed_size[5];
+static int MIB_kstat_zfs_misc_arcstats_uncompressed_size[5];
+
+void openzfs_sysctl_init(ZfsArcStats* stats) {
+ size_t len;
+ unsigned long long int arcSize;
+
+ len = sizeof(arcSize);
+ if (sysctlbyname("kstat.zfs.misc.arcstats.size", &arcSize, &len, NULL, 0) == 0 && arcSize != 0) {
+ stats->enabled = 1;
+
+ len = 5;
+ sysctlnametomib("kstat.zfs.misc.arcstats.size", MIB_kstat_zfs_misc_arcstats_size, &len);
+
+ sysctlnametomib("kstat.zfs.misc.arcstats.c_min", MIB_kstat_zfs_misc_arcstats_c_min, &len);
+ sysctlnametomib("kstat.zfs.misc.arcstats.c_max", MIB_kstat_zfs_misc_arcstats_c_max, &len);
+ sysctlnametomib("kstat.zfs.misc.arcstats.mfu_size", MIB_kstat_zfs_misc_arcstats_mfu_size, &len);
+ sysctlnametomib("kstat.zfs.misc.arcstats.mru_size", MIB_kstat_zfs_misc_arcstats_mru_size, &len);
+ sysctlnametomib("kstat.zfs.misc.arcstats.anon_size", MIB_kstat_zfs_misc_arcstats_anon_size, &len);
+ sysctlnametomib("kstat.zfs.misc.arcstats.hdr_size", MIB_kstat_zfs_misc_arcstats_hdr_size, &len);
+ sysctlnametomib("kstat.zfs.misc.arcstats.other_size", MIB_kstat_zfs_misc_arcstats_other_size, &len);
+
+ if (sysctlnametomib("kstat.zfs.misc.arcstats.compressed_size", MIB_kstat_zfs_misc_arcstats_compressed_size, &len) == 0) {
+ stats->isCompressed = 1;
+ sysctlnametomib("kstat.zfs.misc.arcstats.uncompressed_size", MIB_kstat_zfs_misc_arcstats_uncompressed_size, &len);
+ } else {
+ stats->isCompressed = 0;
+ }
+ } else {
+ stats->enabled = 0;
+ }
+}
+
+void openzfs_sysctl_updateArcStats(ZfsArcStats* stats) {
+ size_t len;
+
+ if (stats->enabled) {
+ len = sizeof(stats->size);
+ sysctl(MIB_kstat_zfs_misc_arcstats_size, 5, &(stats->size), &len, NULL, 0);
+ stats->size /= 1024;
+
+ len = sizeof(stats->min);
+ sysctl(MIB_kstat_zfs_misc_arcstats_c_min, 5, &(stats->min), &len, NULL, 0);
+ stats->min /= 1024;
+
+ len = sizeof(stats->max);
+ sysctl(MIB_kstat_zfs_misc_arcstats_c_max, 5, &(stats->max), &len, NULL, 0);
+ stats->max /= 1024;
+
+ len = sizeof(stats->MFU);
+ sysctl(MIB_kstat_zfs_misc_arcstats_mfu_size, 5, &(stats->MFU), &len, NULL, 0);
+ stats->MFU /= 1024;
+
+ len = sizeof(stats->MRU);
+ sysctl(MIB_kstat_zfs_misc_arcstats_mru_size, 5, &(stats->MRU), &len, NULL, 0);
+ stats->MRU /= 1024;
+
+ len = sizeof(stats->anon);
+ sysctl(MIB_kstat_zfs_misc_arcstats_anon_size, 5, &(stats->anon), &len, NULL, 0);
+ stats->anon /= 1024;
+
+ len = sizeof(stats->header);
+ sysctl(MIB_kstat_zfs_misc_arcstats_hdr_size, 5, &(stats->header), &len, NULL, 0);
+ stats->header /= 1024;
+
+ len = sizeof(stats->other);
+ sysctl(MIB_kstat_zfs_misc_arcstats_other_size, 5, &(stats->other), &len, NULL, 0);
+ stats->other /= 1024;
+
+ if (stats->isCompressed) {
+ len = sizeof(stats->compressed);
+ sysctl(MIB_kstat_zfs_misc_arcstats_compressed_size, 5, &(stats->compressed), &len, NULL, 0);
+ stats->compressed /= 1024;
+
+ len = sizeof(stats->uncompressed);
+ sysctl(MIB_kstat_zfs_misc_arcstats_uncompressed_size, 5, &(stats->uncompressed), &len, NULL, 0);
+ stats->uncompressed /= 1024;
+ }
+ }
+}