/* $OpenBSD$ */ /* * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com> * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <sys/param.h> #include <sys/stat.h> #include <sys/sysctl.h> #include <sys/user.h> #include <err.h> #include <errno.h> #include <event.h> #include <stdint.h> #include <stdlib.h> #include <string.h> #include <unistd.h> struct kinfo_proc *cmp_procs(struct kinfo_proc *, struct kinfo_proc *); char *osdep_get_name(int, char *); char *osdep_get_cwd(int); struct event_base *osdep_event_init(void); #ifndef nitems #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0])) #endif #define is_runnable(p) \ ((p)->kp_stat == SACTIVE || (p)->kp_stat == SIDL) #define is_stopped(p) \ ((p)->kp_stat == SSTOP || (p)->kp_stat == SZOMB) struct kinfo_proc * cmp_procs(struct kinfo_proc *p1, struct kinfo_proc *p2) { if (is_runnable(p1) && !is_runnable(p2)) return (p1); if (!is_runnable(p1) && is_runnable(p2)) return (p2); if (is_stopped(p1) && !is_stopped(p2)) return (p1); if (!is_stopped(p1) && is_stopped(p2)) return (p2); if (strcmp(p1->kp_comm, p2->kp_comm) < 0) return (p1); if (strcmp(p1->kp_comm, p2->kp_comm) > 0) return (p2); if (p1->kp_pid > p2->kp_pid) return (p1); return (p2); } char * osdep_get_name(int fd, char *tty) { int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PGRP, 0 }; struct stat sb; size_t len; struct kinfo_proc *buf, *newbuf, *bestp; u_int i; char *name; buf = NULL; if (stat(tty, &sb) == -1) return (NULL); if ((mib[3] = tcgetpgrp(fd)) == -1) return (NULL); retry: if (sysctl(mib, nitems(mib), NULL, &len, NULL, 0) == -1) return (NULL); len = (len * 5) / 4; if ((newbuf = realloc(buf, len)) == NULL) goto error; buf = newbuf; if (sysctl(mib, nitems(mib), buf, &len, NULL, 0) == -1) { if (errno == ENOMEM) goto retry; goto error; } bestp = NULL; for (i = 0; i < len / sizeof (struct kinfo_proc); i++) { if (buf[i].kp_tdev != sb.st_rdev) continue; if (bestp == NULL) bestp = &buf[i]; else bestp = cmp_procs(&buf[i], bestp); } name = NULL; if (bestp != NULL) name = strdup(bestp->kp_comm); free(buf); return (name); error: free(buf); return (NULL); } char * osdep_get_cwd(int fd) { return (NULL); } struct event_base * osdep_event_init(void) { return (event_init()); }