mirror of
https://github.com/munin-monitoring/contrib.git
synced 2018-11-08 00:59:34 +01:00
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "common.h"
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#define FS_INODE_NR "/proc/sys/fs/inode-nr"
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int open_inodes(int argc, char **argv) {
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FILE *f;
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int nr, freen;
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if(argc > 1) {
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if(!strcmp(argv[1], "config")) {
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puts("graph_title Inode table usage\n"
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"graph_args --base 1000 -l 0\n"
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"graph_vlabel number of open inodes\n"
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"graph_category system\n"
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"graph_info This graph monitors the Linux open inode table.\n"
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"used.label open inodes\n"
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"used.info The number of currently open inodes.\n"
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"max.label inode table size\n"
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"max.info The size of the system inode table. This is dynamically adjusted by the kernel.");
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return 0;
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}
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if(!strcmp(argv[1], "autoconf")) {
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if(0 == access(FS_INODE_NR, R_OK))
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return writeyes();
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else
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return writeno(FS_INODE_NR " not readable");
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}
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}
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if(!(f=fopen(FS_INODE_NR, "r"))) {
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fputs("cannot open " FS_INODE_NR "\n", stderr);
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return 1;
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}
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if(2 != fscanf(f, "%d %d", &nr, &freen)) {
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fclose(f);
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fputs("cannot read from " FS_INODE_NR "\n", stderr);
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return 1;
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}
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fclose(f);
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printf("used.value %d\nmax.value %d\n", nr-freen, nr);
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return 0;
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}
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