diff options
| -rw-r--r-- | Makefile | 8 | ||||
| -rw-r--r-- | if_err_.c | 123 | ||||
| -rw-r--r-- | main.c | 3 |
3 files changed, 130 insertions, 4 deletions
@@ -1,9 +1,9 @@ CC=gcc CFLAGS=-W -Wall -pedantic -Wextra -g -O2 -OBJS=main.o common.o cpu.o entropy.o forks.o fw_packets.o interrupts.o load.o \ - open_files.o open_inodes.o processes.o swap.o uptime.o -LINKS=cpu entropy forks fw_packets interrupts load open_files open_inodes \ - processes swap uptime +OBJS=main.o common.o cpu.o entropy.o forks.o fw_packets.o interrupts.o \ + if_err_.o load.o open_files.o open_inodes.o processes.o swap.o uptime.o +LINKS=cpu entropy forks fw_packets interrupts if_err_eth0 load open_files \ + open_inodes processes swap uptime %.o:%.c ${CC} ${CFLAGS} -c $< -o $@ diff --git a/if_err_.c b/if_err_.c new file mode 100644 index 0000000..caee6b3 --- /dev/null +++ b/if_err_.c @@ -0,0 +1,123 @@ +#include <ctype.h> +#include <libgen.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> + +#define PROC_NET_DEV "/proc/net/dev" + +int if_err_(int argc, char **argv) { + char *interface; + FILE *f; + char buff[256], *s; + int i; + + interface = basename(argv[0]); + if(strncmp(interface, "if_err_", 7) != 0) { + fputs("if_err_ invoked with invalid basename\n", stderr); + return 1; + } + interface += 7; + + if(argc > 1) { + if(!strcmp(argv[1], "autoconf")) { + if(access(PROC_NET_DEV, R_OK) == 0) { + puts("yes"); + return 0; + } else { + puts("no (/proc/net/dev not found)"); + return 1; + } + } + if(!strcmp(argv[1], "suggest")) { + if(NULL == (f = fopen(PROC_NET_DEV, "r"))) + return 1; + while(fgets(buff, 256, f)) { + for(s=buff;*s == ' ';++s) + ; + i = 0; + if(!strncmp(s, "eth", 3)) + i = 3; + else if(!strncmp(s, "wlan", 4)) + i = 4; + else if(!strncmp(s, "ath", 3)) + i = 3; + else if(!strncmp(s, "ra", 2)) + i = 2; + if(i == 0) + continue; + while(isdigit(s[i])) + ++i; + if(s[i] != ':') + continue; + s[i] = '\0'; + puts(s); + } + fclose(f); + return 0; + } + if(!strcmp(argv[1], "config")) { + puts("graph_order rcvd trans"); + printf("graph_title %s errors\n", interface); + puts("graph_args --base 1000\n" + "graph_vlabel packets in (-) / out (+) per " + "${graph_period}\n" + "graph_category network"); + printf("graph_info This graph shows the amount of " + "errors on the %s network interface.\n", + interface); + puts("rcvd.label packets\n" + "rcvd.type COUNTER\n" + "rcvd.graph no\n" + "rcvd.warning 1\n" + "trans.label packets\n" + "trans.type COUNTER\n" + "trans.negative rcvd\n" + "trans.warning 1"); + return 0; + } + } + if(NULL == (f = fopen(PROC_NET_DEV, "r"))) + return 1; + while(fgets(buff, 256, f)) { + for(s=buff;*s == ' ';++s) + ; + if(0 != strncmp(s, interface, strlen(interface))) + continue; + s += strlen(interface); + if(*s != ':') + continue; + ++s; + + while(*s == ' ') + ++s; + + for(i=1;i<3;++i) { + while(isdigit(*s)) + ++s; + while(isspace(*s)) + ++s; + } + for(i=0;isdigit(s[i]);++i) + ; + printf("rcvd.value "); + fwrite(s, 1, i, stdout); + putchar('\n'); + s += i; + while(isspace(*s)) + ++s; + + for(i=4;i<11;++i) { + while(isdigit(*s)) + ++s; + while(isspace(*s)) + ++s; + } + for(i=0;isdigit(s[i]);++i) + ; + printf("trans.value "); + fwrite(s, 1, i, stdout); + putchar('\n'); + } + return 0; +} @@ -6,6 +6,7 @@ int cpu(int argc, char **argv); int entropy(int argc, char **argv); int forks(int argc, char **argv); int fw_packets(int argc, char **argv); +int if_err_(int argc, char **argv); int interrupts(int argc, char **argv); int load(int argc, char **argv); int open_files(int argc, char **argv); @@ -35,6 +36,8 @@ int main(int argc, char **argv) { case 'i': if(!strcmp(progname+1, "nterrupts")) return interrupts(argc, argv); + if(!strncmp(progname+1, "f_err_", 6)) + return if_err_(argc, argv); break; case 'l': if(!strcmp(progname+1, "oad")) |