117 lines
1.9 KiB
C
117 lines
1.9 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <errno.h>
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#include <unistd.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 <limits.h>
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#include "proc.h"
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#include "util.h"
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static void usage(void);
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static void psout(struct procstat *ps);
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static void psr(const char *path);
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enum {
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PS_aflag = 1 << 0,
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PS_Aflag = 1 << 1,
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PS_dflag = 1 << 2
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};
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static int flags;
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int
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main(int argc, char *argv[])
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{
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ARGBEGIN {
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case 'a':
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flags |= PS_aflag;
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break;
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case 'A':
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flags |= PS_Aflag;
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break;
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case 'd':
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flags |= PS_dflag;
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break;
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case 'e':
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flags |= PS_Aflag;
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break;
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case 'f':
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eprintf("not implemented\n");
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default:
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usage();
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} ARGEND;
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printf(" PID TTY TIME CMD\n");
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recurse("/proc", psr);
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return 0;
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}
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static void
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usage(void)
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{
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eprintf("usage: [-aAdef] %s\n", argv0);
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}
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static void
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psout(struct procstat *ps)
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{
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char *ttystr, *myttystr;
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int tty_maj, tty_min;
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uid_t myeuid, peuid;
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unsigned sut;
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/* Ignore session leaders */
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if (flags & PS_dflag)
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if (ps->pid == ps->sid)
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return;
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sut = (ps->stime + ps->utime) / 100;
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devtotty(ps->tty_nr, &tty_maj, &tty_min);
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ttystr = ttytostr(tty_maj, tty_min);
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/* Only print processes that are associated with
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* a terminal */
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if (ttystr[0] == '?' && (flags & PS_aflag)) {
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free(ttystr);
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return;
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}
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if (!flags) {
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myttystr = ttyname(STDIN_FILENO);
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if (myttystr) {
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if (strcmp(myttystr + strlen("/dev/"), ttystr)) {
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free(ttystr);
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return;
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}
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} else {
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ttystr[0] = '?';
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ttystr[1] = '\0';
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}
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proceuid(ps->pid, &peuid);
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myeuid = geteuid();
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if (myeuid != peuid) {
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free(ttystr);
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return;
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}
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}
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printf("%5d %-6s %02u:%02u:%02u %s\n", ps->pid, ttystr,
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sut / 3600, (sut % 3600) / 60, sut % 60, ps->comm);
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free(ttystr);
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}
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static void
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psr(const char *path)
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{
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struct procstat ps;
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pid_t pid;
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if (!validps(path))
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return;
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pid = estrtol(path, 10);
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parsestat(pid, &ps);
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psout(&ps);
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}
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