darwin.c

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// SPDX-FileCopyrightText: 2010 pancake <pancake@nopcode.org>
// SPDX-License-Identifier: LGPL-3.0-only
 
#include <stdio.h>
 
int pids_cmdline(int pid, char *cmdline) {
    int fd;
    sprintf(cmdline, "/proc/%d/cmdline", pid);
    fd = open(cmdline, O_RDONLY);
    cmdline[0] = '\0';
    if (fd != -1) {
        rz_xread(fd, cmdline, 1024);
        cmdline[1024] = '\0';
        close(fd);
    }
 
    return 0;
}
 
// XXX
int pids_sons_of_r(int pid, int recursive, int limit) {
    int p, mola, tmp, n = 0;
    FILE *fd;
    char tmp3[8];
    char buf[128];
    char tmp2[1024];
    struct dirent *file;
    DIR *dh;
 
    if (pid < 1)
        return false;
    dh = opendir("/proc/");
    if (!dh) {
        return false;
    }
 
    while ((file = (struct dirent *)readdir(dh))) {
        p = atoi(file->d_name);
        if (p) {
            sprintf(buf, "/proc/%s/stat", file->d_name);
            fd = fopen(buf, "r");
            if (fd) {
                mola = 0;
                fscanf(fd, "%d %s %s %d",
                    &tmp, tmp2, tmp3, &mola);
                if (mola == pid) {
                    pids_cmdline(p, tmp2);
                    // for(i=0; i<recursive*2;i++)
                    //       printf(" ");
                    cons_printf(" `- %d : %s (%s)\n",
                        p, tmp2, (tmp3[0] == 'S') ? "sleeping" : (tmp3[0] == 'T') ? "stopped"
                                                      : "running");
                    n++;
                    if (recursive < limit) {
                        n += pids_sons_of_r(p, recursive + 1, limit);
                    }
                }
            }
            fclose(fd);
        }
    }
    closedir(dh);
    return n;
}