mirror of
git://git.suckless.org/ubase
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121 lines
2.1 KiB
C
121 lines
2.1 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <sys/types.h>
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#include <dirent.h>
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#include <libgen.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "proc.h"
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#include "queue.h"
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#include "util.h"
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static void
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usage(void)
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{
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eprintf("usage: %s [-o pid1,pid2,...pidN] [-s] [program...]\n", argv0);
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}
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struct pidentry {
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pid_t pid;
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TAILQ_ENTRY(pidentry) entry;
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};
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static TAILQ_HEAD(omitpid_head, pidentry) omitpid_head;
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int
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main(int argc, char *argv[])
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{
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DIR *dp;
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struct dirent *entry;
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pid_t pid;
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struct procstat ps;
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char cmdline[BUFSIZ], *cmd, *cmdbase = NULL, *p, *arg = NULL;
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int i, found = 0;
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int sflag = 0, oflag = 0;
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struct pidentry *pe, *tmp;
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ARGBEGIN {
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case 's':
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sflag = 1;
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break;
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case 'o':
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oflag = 1;
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arg = EARGF(usage());
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break;
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default:
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usage();
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} ARGEND;
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if (!argc)
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return EXIT_FAILURE;
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TAILQ_INIT(&omitpid_head);
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for (p = strtok(arg, ","); p; p = strtok(NULL, ",")) {
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pe = emalloc(sizeof(*pe));
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if (strcmp(p, "%PPID") == 0)
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pe->pid = getppid();
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else
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pe->pid = estrtol(p, 10);
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TAILQ_INSERT_TAIL(&omitpid_head, pe, entry);
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}
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if (!(dp = opendir("/proc")))
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eprintf("opendir /proc:");
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while ((entry = readdir(dp))) {
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if (!pidfile(entry->d_name))
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continue;
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pid = estrtol(entry->d_name, 10);
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if (oflag) {
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TAILQ_FOREACH(pe, &omitpid_head, entry)
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if (pe->pid == pid)
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break;
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if (pe)
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continue;
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}
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if (parsestat(pid, &ps) < 0)
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continue;
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if (parsecmdline(ps.pid, cmdline,
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sizeof(cmdline)) < 0) {
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cmd = ps.comm;
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cmdbase = cmd;
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} else {
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if ((p = strchr(cmdline, ' ')))
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*p = '\0';
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cmd = cmdline;
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cmdbase = basename(cmdline);
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}
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/* Workaround for login shells */
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if (cmd[0] == '-')
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cmd++;
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for (i = 0; i < argc; i++) {
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if (strcmp(cmd, argv[i]) == 0 ||
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strcmp(cmdbase, argv[0]) == 0) {
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putword(entry->d_name);
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found++;
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if (sflag)
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goto out;
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}
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}
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}
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out:
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if (found)
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putchar('\n');
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closedir(dp);
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for (pe = TAILQ_FIRST(&omitpid_head); pe; pe = tmp) {
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tmp = TAILQ_NEXT(pe, entry);
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TAILQ_REMOVE(&omitpid_head, pe, entry);
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free(pe);
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}
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return EXIT_SUCCESS;
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}
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