X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fdf.c;h=f3bc7e4267eb5151eb02cab049e16be3842eff29;hb=f8379dd45f4a43595f4027992696ee8d02908bff;hp=79829855d18d6fbf86f9fd0604390216121af550;hpb=1e4db580e37d235755de0c4a4c08ba7a6ac7bb4c;p=collectd.git diff --git a/src/df.c b/src/df.c index 79829855..f3bc7e42 100644 --- a/src/df.c +++ b/src/df.c @@ -1,6 +1,6 @@ /** * collectd - src/df.c - * Copyright (C) 2005-2007 Florian octo Forster + * Copyright (C) 2005-2009 Florian octo Forster * Copyright (C) 2009 Paul Sadauskas * * This program is free software; you can redistribute it and/or modify it @@ -33,12 +33,14 @@ # include # endif # define STATANYFS statvfs +# define STATANYFS_STR "statvfs" # define BLOCKSIZE(s) ((s).f_frsize ? (s).f_frsize : (s).f_bsize) #elif HAVE_STATFS # if HAVE_SYS_STATFS_H # include # endif # define STATANYFS statfs +# define STATANYFS_STR "statfs" # define BLOCKSIZE(s) (s).f_bsize #else # error "No applicable input method." @@ -50,7 +52,10 @@ static const char *config_keys[] = "MountPoint", "FSType", "IgnoreSelected", - "ReportByDevice" + "ReportByDevice", + "ReportInodes", + "ValuesAbsolute", + "ValuesPercentage" }; static int config_keys_num = STATIC_ARRAY_SIZE (config_keys); @@ -58,7 +63,10 @@ static ignorelist_t *il_device = NULL; static ignorelist_t *il_mountpoint = NULL; static ignorelist_t *il_fstype = NULL; -static _Bool by_device = false; +static _Bool by_device = 0; +static _Bool report_inodes = 0; +static _Bool values_absolute = 1; +static _Bool values_percentage = 0; static int df_init (void) { @@ -113,7 +121,34 @@ static int df_config (const char *key, const char *value) else if (strcasecmp (key, "ReportByDevice") == 0) { if (IS_TRUE (value)) - by_device = true; + by_device = 1; + + return (0); + } + else if (strcasecmp (key, "ReportInodes") == 0) + { + if (IS_TRUE (value)) + report_inodes = 1; + else + report_inodes = 0; + + return (0); + } + else if (strcasecmp (key, "ValuesAbsolute") == 0) + { + if (IS_TRUE (value)) + values_absolute = 1; + else + values_absolute = 0; + + return (0); + } + else if (strcasecmp (key, "ValuesPercentage") == 0) + { + if (IS_TRUE (value)) + values_percentage = 1; + else + values_percentage = 0; return (0); } @@ -121,26 +156,30 @@ static int df_config (const char *key, const char *value) return (-1); } -static void df_submit (char *df_name, - gauge_t df_used, - gauge_t df_free) +__attribute__ ((nonnull(2))) +static void df_submit_one (char *plugin_instance, + const char *type, const char *type_instance, + gauge_t value) { - value_t values[2]; + value_t values[1]; value_list_t vl = VALUE_LIST_INIT; - values[0].gauge = df_used; - values[1].gauge = df_free; + values[0].gauge = value; vl.values = values; - vl.values_len = 2; + vl.values_len = 1; sstrncpy (vl.host, hostname_g, sizeof (vl.host)); sstrncpy (vl.plugin, "df", sizeof (vl.plugin)); - sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance)); - sstrncpy (vl.type, "df", sizeof (vl.host)); - sstrncpy (vl.type_instance, df_name, sizeof (vl.type_instance)); + if (plugin_instance != NULL) + sstrncpy (vl.plugin_instance, plugin_instance, + sizeof (vl.plugin_instance)); + sstrncpy (vl.type, type, sizeof (vl.type)); + if (type_instance != NULL) + sstrncpy (vl.type_instance, type_instance, + sizeof (vl.type_instance)); plugin_dispatch_values (&vl); -} /* void df_submit */ +} /* void df_submit_one */ static int df_read (void) { @@ -153,21 +192,59 @@ static int df_read (void) cu_mount_t *mnt_list; cu_mount_t *mnt_ptr; - unsigned long long blocksize; - gauge_t df_free; - gauge_t df_used; - char disk_name[256]; - mnt_list = NULL; if (cu_mount_getlist (&mnt_list) == NULL) + { + ERROR ("df plugin: cu_mount_getlist failed."); return (-1); + } for (mnt_ptr = mnt_list; mnt_ptr != NULL; mnt_ptr = mnt_ptr->next) { + unsigned long long blocksize; + char disk_name[256]; + cu_mount_t *dup_ptr; + uint64_t blk_free; + uint64_t blk_reserved; + uint64_t blk_used; + + char const *dev = (mnt_ptr->spec_device != NULL) + ? mnt_ptr->spec_device + : mnt_ptr->device; + + if (ignorelist_match (il_device, dev)) + continue; + if (ignorelist_match (il_mountpoint, mnt_ptr->dir)) + continue; + if (ignorelist_match (il_fstype, mnt_ptr->type)) + continue; + + /* search for duplicates *in front of* the current mnt_ptr. */ + for (dup_ptr = mnt_list; dup_ptr != NULL; dup_ptr = dup_ptr->next) + { + /* No duplicate found: mnt_ptr is the first of its kind. */ + if (dup_ptr == mnt_ptr) + { + dup_ptr = NULL; + break; + } + + /* Duplicate found: leave non-NULL dup_ptr. */ + if (by_device && (strcmp (mnt_ptr->spec_device, dup_ptr->spec_device) == 0)) + break; + else if (!by_device && (strcmp (mnt_ptr->dir, dup_ptr->dir) == 0)) + break; + } + + /* ignore duplicates */ + if (dup_ptr != NULL) + continue; + if (STATANYFS (mnt_ptr->dir, &statbuf) < 0) { char errbuf[1024]; - ERROR ("statv?fs failed: %s", + ERROR (STATANYFS_STR"(%s) failed: %s", + mnt_ptr->dir, sstrerror (errno, errbuf, sizeof (errbuf))); continue; @@ -176,30 +253,24 @@ static int df_read (void) if (!statbuf.f_blocks) continue; - blocksize = BLOCKSIZE(statbuf); - df_free = statbuf.f_bfree * blocksize; - df_used = (statbuf.f_blocks - statbuf.f_bfree) * blocksize; - - if (by_device) + if (by_device) { /* eg, /dev/hda1 -- strip off the "/dev/" */ - if (strncmp (mnt_ptr->spec_device, "/dev/", strlen ("/dev/")) == 0) - sstrncpy (disk_name, mnt_ptr->spec_device + strlen ("/dev/"), sizeof (disk_name)); + if (strncmp (dev, "/dev/", strlen ("/dev/")) == 0) + sstrncpy (disk_name, dev + strlen ("/dev/"), sizeof (disk_name)); else - sstrncpy (disk_name, mnt_ptr->spec_device, sizeof (disk_name)); + sstrncpy (disk_name, dev, sizeof (disk_name)); - if (strlen(disk_name) < 1) + if (strlen(disk_name) < 1) { - DEBUG("df: no device name name for mountpoint %s, skipping", mnt_ptr->dir); + DEBUG("df: no device name for mountpoint %s, skipping", mnt_ptr->dir); continue; } - } - else + } + else { if (strcmp (mnt_ptr->dir, "/") == 0) - { sstrncpy (disk_name, "root", sizeof (disk_name)); - } else { int i, len; @@ -213,17 +284,99 @@ static int df_read (void) } } - if (ignorelist_match (il_device, - (mnt_ptr->spec_device != NULL) - ? mnt_ptr->spec_device - : mnt_ptr->device)) - continue; - if (ignorelist_match (il_mountpoint, mnt_ptr->dir)) - continue; - if (ignorelist_match (il_fstype, mnt_ptr->type)) - continue; + blocksize = BLOCKSIZE(statbuf); + + /* + * Sanity-check for the values in the struct + */ + /* Check for negative "available" byes. For example UFS can + * report negative free space for user. Notice. blk_reserved + * will start to diminish after this. */ +#if HAVE_STATVFS + /* Cast and temporary variable are needed to avoid + * compiler warnings. + * ((struct statvfs).f_bavail is unsigned (POSIX)) */ + int64_t signed_bavail = (int64_t) statbuf.f_bavail; + if (signed_bavail < 0) + statbuf.f_bavail = 0; +#elif HAVE_STATFS + if (statbuf.f_bavail < 0) + statbuf.f_bavail = 0; +#endif + /* Make sure that f_blocks >= f_bfree >= f_bavail */ + if (statbuf.f_bfree < statbuf.f_bavail) + statbuf.f_bfree = statbuf.f_bavail; + if (statbuf.f_blocks < statbuf.f_bfree) + statbuf.f_blocks = statbuf.f_bfree; + + blk_free = (uint64_t) statbuf.f_bavail; + blk_reserved = (uint64_t) (statbuf.f_bfree - statbuf.f_bavail); + blk_used = (uint64_t) (statbuf.f_blocks - statbuf.f_bfree); + + if (values_absolute) + { + df_submit_one (disk_name, "df_complex", "free", + (gauge_t) (blk_free * blocksize)); + df_submit_one (disk_name, "df_complex", "reserved", + (gauge_t) (blk_reserved * blocksize)); + df_submit_one (disk_name, "df_complex", "used", + (gauge_t) (blk_used * blocksize)); + } - df_submit (disk_name, df_used, df_free); + if (values_percentage) + { + if (statbuf.f_blocks > 0) + { + df_submit_one (disk_name, "percent_bytes", "free", + (gauge_t) ((float_t)(blk_free) / statbuf.f_blocks * 100)); + df_submit_one (disk_name, "percent_bytes", "reserved", + (gauge_t) ((float_t)(blk_reserved) / statbuf.f_blocks * 100)); + df_submit_one (disk_name, "percent_bytes", "used", + (gauge_t) ((float_t)(blk_used) / statbuf.f_blocks * 100)); + } + else return (-1); + } + + /* inode handling */ + if (report_inodes && statbuf.f_files != 0 && statbuf.f_ffree != 0) + { + uint64_t inode_free; + uint64_t inode_reserved; + uint64_t inode_used; + + /* Sanity-check for the values in the struct */ + if (statbuf.f_ffree < statbuf.f_favail) + statbuf.f_ffree = statbuf.f_favail; + if (statbuf.f_files < statbuf.f_ffree) + statbuf.f_files = statbuf.f_ffree; + + inode_free = (uint64_t) statbuf.f_favail; + inode_reserved = (uint64_t) (statbuf.f_ffree - statbuf.f_favail); + inode_used = (uint64_t) (statbuf.f_files - statbuf.f_ffree); + + if (values_percentage) + { + if (statbuf.f_files > 0) + { + df_submit_one (disk_name, "percent_inodes", "free", + (gauge_t) ((float_t)(inode_free) / statbuf.f_files * 100)); + df_submit_one (disk_name, "percent_inodes", "reserved", + (gauge_t) ((float_t)(inode_reserved) / statbuf.f_files * 100)); + df_submit_one (disk_name, "percent_inodes", "used", + (gauge_t) ((float_t)(inode_used) / statbuf.f_files * 100)); + } + else return (-1); + } + if (values_absolute) + { + df_submit_one (disk_name, "df_inodes", "free", + (gauge_t) inode_free); + df_submit_one (disk_name, "df_inodes", "reserved", + (gauge_t) inode_reserved); + df_submit_one (disk_name, "df_inodes", "used", + (gauge_t) inode_used); + } + } } cu_mount_freelist (mnt_list);