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Diffstat (limited to 'collectors/freebsd.plugin/freebsd_getmntinfo.c')
-rw-r--r--collectors/freebsd.plugin/freebsd_getmntinfo.c301
1 files changed, 301 insertions, 0 deletions
diff --git a/collectors/freebsd.plugin/freebsd_getmntinfo.c b/collectors/freebsd.plugin/freebsd_getmntinfo.c
new file mode 100644
index 000000000..c86f23166
--- /dev/null
+++ b/collectors/freebsd.plugin/freebsd_getmntinfo.c
@@ -0,0 +1,301 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_freebsd.h"
+
+#include <sys/mount.h>
+
+struct mount_point {
+ char *name;
+ uint32_t hash;
+ size_t len;
+
+ // flags
+ int configured;
+ int enabled;
+ int updated;
+
+ int do_space;
+ int do_inodes;
+
+ size_t collected; // the number of times this has been collected
+
+ // charts and dimensions
+
+ RRDSET *st_space;
+ RRDDIM *rd_space_used;
+ RRDDIM *rd_space_avail;
+ RRDDIM *rd_space_reserved;
+
+ RRDSET *st_inodes;
+ RRDDIM *rd_inodes_used;
+ RRDDIM *rd_inodes_avail;
+
+ struct mount_point *next;
+};
+
+static struct mount_point *mount_points_root = NULL, *mount_points_last_used = NULL;
+
+static size_t mount_points_added = 0, mount_points_found = 0;
+
+static void mount_point_free(struct mount_point *m) {
+ if (likely(m->st_space))
+ rrdset_is_obsolete(m->st_space);
+ if (likely(m->st_inodes))
+ rrdset_is_obsolete(m->st_inodes);
+
+ mount_points_added--;
+ freez(m->name);
+ freez(m);
+}
+
+static void mount_points_cleanup() {
+ if (likely(mount_points_found == mount_points_added)) return;
+
+ struct mount_point *m = mount_points_root, *last = NULL;
+ while(m) {
+ if (unlikely(!m->updated)) {
+ // info("Removing mount point '%s', linked after '%s'", m->name, last?last->name:"ROOT");
+
+ if (mount_points_last_used == m)
+ mount_points_last_used = last;
+
+ struct mount_point *t = m;
+
+ if (m == mount_points_root || !last)
+ mount_points_root = m = m->next;
+
+ else
+ last->next = m = m->next;
+
+ t->next = NULL;
+ mount_point_free(t);
+ }
+ else {
+ last = m;
+ m->updated = 0;
+ m = m->next;
+ }
+ }
+}
+
+static struct mount_point *get_mount_point(const char *name) {
+ struct mount_point *m;
+
+ uint32_t hash = simple_hash(name);
+
+ // search it, from the last position to the end
+ for(m = mount_points_last_used ; m ; m = m->next) {
+ if (unlikely(hash == m->hash && !strcmp(name, m->name))) {
+ mount_points_last_used = m->next;
+ return m;
+ }
+ }
+
+ // search it from the beginning to the last position we used
+ for(m = mount_points_root ; m != mount_points_last_used ; m = m->next) {
+ if (unlikely(hash == m->hash && !strcmp(name, m->name))) {
+ mount_points_last_used = m->next;
+ return m;
+ }
+ }
+
+ // create a new one
+ m = callocz(1, sizeof(struct mount_point));
+ m->name = strdupz(name);
+ m->hash = simple_hash(m->name);
+ m->len = strlen(m->name);
+ mount_points_added++;
+
+ // link it to the end
+ if (mount_points_root) {
+ struct mount_point *e;
+ for(e = mount_points_root; e->next ; e = e->next) ;
+ e->next = m;
+ }
+ else
+ mount_points_root = m;
+
+ return m;
+}
+
+// --------------------------------------------------------------------------------------------------------------------
+// getmntinfo
+
+int do_getmntinfo(int update_every, usec_t dt) {
+ (void)dt;
+
+#define DELAULT_EXCLUDED_PATHS "/proc/*"
+// taken from gnulib/mountlist.c and shortened to FreeBSD related fstypes
+#define DEFAULT_EXCLUDED_FILESYSTEMS "autofs procfs subfs devfs none"
+#define CONFIG_SECTION_GETMNTINFO "plugin:freebsd:getmntinfo"
+
+ static int enable_new_mount_points = -1;
+ static int do_space = -1, do_inodes = -1;
+ static SIMPLE_PATTERN *excluded_mountpoints = NULL;
+ static SIMPLE_PATTERN *excluded_filesystems = NULL;
+
+ if (unlikely(enable_new_mount_points == -1)) {
+ enable_new_mount_points = config_get_boolean_ondemand(CONFIG_SECTION_GETMNTINFO,
+ "enable new mount points detected at runtime",
+ CONFIG_BOOLEAN_AUTO);
+
+ do_space = config_get_boolean_ondemand(CONFIG_SECTION_GETMNTINFO, "space usage for all disks", CONFIG_BOOLEAN_AUTO);
+ do_inodes = config_get_boolean_ondemand(CONFIG_SECTION_GETMNTINFO, "inodes usage for all disks", CONFIG_BOOLEAN_AUTO);
+
+ excluded_mountpoints = simple_pattern_create(
+ config_get(CONFIG_SECTION_GETMNTINFO, "exclude space metrics on paths",
+ DELAULT_EXCLUDED_PATHS)
+ , NULL
+ , SIMPLE_PATTERN_EXACT
+ );
+
+ excluded_filesystems = simple_pattern_create(
+ config_get(CONFIG_SECTION_GETMNTINFO, "exclude space metrics on filesystems",
+ DEFAULT_EXCLUDED_FILESYSTEMS)
+ , NULL
+ , SIMPLE_PATTERN_EXACT
+ );
+ }
+
+ if (likely(do_space || do_inodes)) {
+ struct statfs *mntbuf;
+ int mntsize;
+
+ // there is no mount info in sysctl MIBs
+ if (unlikely(!(mntsize = getmntinfo(&mntbuf, MNT_NOWAIT)))) {
+ error("FREEBSD: getmntinfo() failed");
+ do_space = 0;
+ error("DISABLED: disk_space.* charts");
+ do_inodes = 0;
+ error("DISABLED: disk_inodes.* charts");
+ error("DISABLED: getmntinfo module");
+ return 1;
+ } else {
+ int i;
+
+ mount_points_found = 0;
+
+ for (i = 0; i < mntsize; i++) {
+ char title[4096 + 1];
+
+ struct mount_point *m = get_mount_point(mntbuf[i].f_mntonname);
+ m->updated = 1;
+ mount_points_found++;
+
+ if (unlikely(!m->configured)) {
+ char var_name[4096 + 1];
+
+ // this is the first time we see this filesystem
+
+ // remember we configured it
+ m->configured = 1;
+
+ m->enabled = enable_new_mount_points;
+
+ if (likely(m->enabled))
+ m->enabled = !(simple_pattern_matches(excluded_mountpoints, mntbuf[i].f_mntonname)
+ || simple_pattern_matches(excluded_filesystems, mntbuf[i].f_fstypename));
+
+ snprintfz(var_name, 4096, "%s:%s", CONFIG_SECTION_GETMNTINFO, mntbuf[i].f_mntonname);
+ m->enabled = config_get_boolean_ondemand(var_name, "enabled", m->enabled);
+
+ if (unlikely(m->enabled == CONFIG_BOOLEAN_NO))
+ continue;
+
+ m->do_space = config_get_boolean_ondemand(var_name, "space usage", do_space);
+ m->do_inodes = config_get_boolean_ondemand(var_name, "inodes usage", do_inodes);
+ }
+
+ if (unlikely(!m->enabled))
+ continue;
+
+ if (unlikely(mntbuf[i].f_flags & MNT_RDONLY && !m->collected))
+ continue;
+
+ // --------------------------------------------------------------------------
+
+ int rendered = 0;
+
+ if (m->do_space == CONFIG_BOOLEAN_YES || (m->do_space == CONFIG_BOOLEAN_AUTO && (mntbuf[i].f_blocks > 2))) {
+ if (unlikely(!m->st_space)) {
+ snprintfz(title, 4096, "Disk Space Usage for %s [%s]",
+ mntbuf[i].f_mntonname, mntbuf[i].f_mntfromname);
+ m->st_space = rrdset_create_localhost("disk_space",
+ mntbuf[i].f_mntonname,
+ NULL,
+ mntbuf[i].f_mntonname,
+ "disk.space",
+ title,
+ "GB",
+ "freebsd.plugin",
+ "getmntinfo",
+ NETDATA_CHART_PRIO_DISKSPACE_SPACE,
+ update_every,
+ RRDSET_TYPE_STACKED
+ );
+
+ m->rd_space_avail = rrddim_add(m->st_space, "avail", NULL,
+ mntbuf[i].f_bsize, GIGA_FACTOR, RRD_ALGORITHM_ABSOLUTE);
+ m->rd_space_used = rrddim_add(m->st_space, "used", NULL,
+ mntbuf[i].f_bsize, GIGA_FACTOR, RRD_ALGORITHM_ABSOLUTE);
+ m->rd_space_reserved = rrddim_add(m->st_space, "reserved_for_root", "reserved for root",
+ mntbuf[i].f_bsize, GIGA_FACTOR, RRD_ALGORITHM_ABSOLUTE);
+ } else
+ rrdset_next(m->st_space);
+
+ rrddim_set_by_pointer(m->st_space, m->rd_space_avail, (collected_number) mntbuf[i].f_bavail);
+ rrddim_set_by_pointer(m->st_space, m->rd_space_used, (collected_number) (mntbuf[i].f_blocks -
+ mntbuf[i].f_bfree));
+ rrddim_set_by_pointer(m->st_space, m->rd_space_reserved, (collected_number) (mntbuf[i].f_bfree -
+ mntbuf[i].f_bavail));
+ rrdset_done(m->st_space);
+
+ rendered++;
+ }
+
+ // --------------------------------------------------------------------------
+
+ if (m->do_inodes == CONFIG_BOOLEAN_YES || (m->do_inodes == CONFIG_BOOLEAN_AUTO && (mntbuf[i].f_files > 1))) {
+ if (unlikely(!m->st_inodes)) {
+ snprintfz(title, 4096, "Disk Files (inodes) Usage for %s [%s]",
+ mntbuf[i].f_mntonname, mntbuf[i].f_mntfromname);
+ m->st_inodes = rrdset_create_localhost("disk_inodes",
+ mntbuf[i].f_mntonname,
+ NULL,
+ mntbuf[i].f_mntonname,
+ "disk.inodes",
+ title,
+ "Inodes",
+ "freebsd.plugin",
+ "getmntinfo",
+ NETDATA_CHART_PRIO_DISKSPACE_INODES,
+ update_every,
+ RRDSET_TYPE_STACKED
+ );
+
+ m->rd_inodes_avail = rrddim_add(m->st_inodes, "avail", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ m->rd_inodes_used = rrddim_add(m->st_inodes, "used", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ } else
+ rrdset_next(m->st_inodes);
+
+ rrddim_set_by_pointer(m->st_inodes, m->rd_inodes_avail, (collected_number) mntbuf[i].f_ffree);
+ rrddim_set_by_pointer(m->st_inodes, m->rd_inodes_used, (collected_number) (mntbuf[i].f_files -
+ mntbuf[i].f_ffree));
+ rrdset_done(m->st_inodes);
+
+ rendered++;
+ }
+
+ if (likely(rendered))
+ m->collected++;
+ }
+ }
+ } else {
+ error("DISABLED: getmntinfo module");
+ return 1;
+ }
+
+ mount_points_cleanup();
+
+ return 0;
+}