/* $Id: osdep-openbsd.c,v 1.1.1.2 2011/08/17 18:40:06 jmmv Exp $ */ /* * Copyright (c) 2009 Nicholas Marriott * * 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 #include #include #include #include #include #include #include #ifndef nitems #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0])) #endif #define is_runnable(p) \ ((p)->p_stat == SRUN || (p)->p_stat == SIDL || (p)->p_stat == SONPROC) #define is_stopped(p) \ ((p)->p_stat == SSTOP || (p)->p_stat == SZOMB || (p)->p_stat == SDEAD) struct kinfo_proc *cmp_procs(struct kinfo_proc *, struct kinfo_proc *); char *osdep_get_name(int, char *); struct event_base *osdep_event_init(void); 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 (p1->p_estcpu > p2->p_estcpu) return (p1); if (p1->p_estcpu < p2->p_estcpu) return (p2); if (p1->p_slptime < p2->p_slptime) return (p1); if (p1->p_slptime > p2->p_slptime) return (p2); if ((p1->p_flag & P_SINTR) && !(p2->p_flag & P_SINTR)) return (p1); if (!(p1->p_flag & P_SINTR) && (p2->p_flag & P_SINTR)) return (p2); if (strcmp(p1->p_comm, p2->p_comm) < 0) return (p1); if (strcmp(p1->p_comm, p2->p_comm) > 0) return (p2); if (p1->p_pid > p2->p_pid) return (p1); return (p2); } char * osdep_get_name(int fd, char *tty) { int mib[6] = { CTL_KERN, KERN_PROC, KERN_PROC_PGRP, 0, sizeof(struct kinfo_proc), 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; mib[5] = (int)(len / sizeof(struct kinfo_proc)); 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 ((dev_t)buf[i].p_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->p_comm); free(buf); return (name); error: free(buf); return (NULL); } struct event_base * osdep_event_init(void) { return (event_init()); }