124 lines
2.3 KiB
C
124 lines
2.3 KiB
C
/* vim: ts=4 sw=4 noexpandtab
|
|
* This file is part of ToaruOS and is released under the terms
|
|
* of the NCSA / University of Illinois License - see LICENSE.md
|
|
* Copyright (C) 2018 K. Lange
|
|
*
|
|
* pidof
|
|
*
|
|
* find and print process IDs
|
|
*/
|
|
|
|
|
|
#include <sys/stat.h>
|
|
#include <sys/signal.h>
|
|
#include <fcntl.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <dirent.h>
|
|
#include <signal.h>
|
|
|
|
typedef struct process {
|
|
int pid;
|
|
int ppid;
|
|
int tgid;
|
|
char name[100];
|
|
char path[200];
|
|
} p_t;
|
|
|
|
#define LINE_LEN 4096
|
|
|
|
p_t * build_entry(struct dirent * dent) {
|
|
char tmp[256];
|
|
FILE * f;
|
|
char line[LINE_LEN];
|
|
|
|
sprintf(tmp, "/proc/%s/status", dent->d_name);
|
|
f = fopen(tmp, "r");
|
|
|
|
p_t * proc = malloc(sizeof(p_t));
|
|
|
|
while (fgets(line, LINE_LEN, f) != NULL) {
|
|
char * n = strstr(line,"\n");
|
|
if (n) { *n = '\0'; }
|
|
char * tab = strstr(line,"\t");
|
|
if (tab) {
|
|
*tab = '\0';
|
|
tab++;
|
|
}
|
|
if (strstr(line, "Pid:") == line) {
|
|
proc->pid = atoi(tab);
|
|
} else if (strstr(line, "PPid:") == line) {
|
|
proc->ppid = atoi(tab);
|
|
} else if (strstr(line, "Tgid:") == line) {
|
|
proc->tgid = atoi(tab);
|
|
} else if (strstr(line, "Name:") == line) {
|
|
strcpy(proc->name, tab);
|
|
} else if (strstr(line, "Path:") == line) {
|
|
strcpy(proc->path, tab);
|
|
}
|
|
}
|
|
|
|
if (strstr(proc->name,"python") == proc->name) {
|
|
char * name = proc->path + strlen(proc->path) - 1;
|
|
|
|
while (1) {
|
|
if (*name == '/') {
|
|
name++;
|
|
break;
|
|
}
|
|
if (name == proc->name) break;
|
|
name--;
|
|
}
|
|
|
|
memcpy(proc->name, name, strlen(name)+1);
|
|
}
|
|
|
|
if (proc->tgid != proc->pid) {
|
|
char tmp[100] = {0};
|
|
sprintf(tmp, "{%s}", proc->name);
|
|
memcpy(proc->name, tmp, strlen(tmp)+1);
|
|
}
|
|
|
|
fclose(f);
|
|
|
|
return proc;
|
|
}
|
|
|
|
int main (int argc, char * argv[]) {
|
|
|
|
if (argc < 2) return 1;
|
|
|
|
int space = 0;
|
|
|
|
/* Open the directory */
|
|
DIR * dirp = opendir("/proc");
|
|
|
|
int found_something = 0;
|
|
|
|
struct dirent * ent = readdir(dirp);
|
|
while (ent != NULL) {
|
|
if (ent->d_name[0] >= '0' && ent->d_name[0] <= '9') {
|
|
p_t * proc = build_entry(ent);
|
|
|
|
if (!strcmp(proc->name, argv[optind])) {
|
|
if (space++) printf(" ");
|
|
printf("%d", proc->pid);
|
|
found_something = 1;
|
|
}
|
|
}
|
|
ent = readdir(dirp);
|
|
}
|
|
closedir(dirp);
|
|
|
|
if (!found_something) {
|
|
return 1;
|
|
}
|
|
printf("\n");
|
|
return 0;
|
|
}
|
|
|
|
|