Annotation of embedaddon/tmux/osdep-netbsd.c, revision 1.1
1.1 ! misho 1: /* $OpenBSD$ */
! 2:
! 3: /*
! 4: * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
! 5: *
! 6: * Permission to use, copy, modify, and distribute this software for any
! 7: * purpose with or without fee is hereby granted, provided that the above
! 8: * copyright notice and this permission notice appear in all copies.
! 9: *
! 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
! 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
! 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
! 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
! 14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
! 15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
! 16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
! 17: */
! 18:
! 19: #include <sys/param.h>
! 20: #include <sys/proc.h>
! 21: #include <sys/stat.h>
! 22: #include <sys/sysctl.h>
! 23:
! 24: #include <errno.h>
! 25: #include <event.h>
! 26: #include <stdlib.h>
! 27: #include <string.h>
! 28: #include <unistd.h>
! 29:
! 30: #define is_runnable(p) \
! 31: ((p)->p_stat == LSRUN || (p)->p_stat == SIDL)
! 32: #define is_stopped(p) \
! 33: ((p)->p_stat == SSTOP || (p)->p_stat == SZOMB)
! 34:
! 35: struct kinfo_proc2 *cmp_procs(struct kinfo_proc2 *, struct kinfo_proc2 *);
! 36: char *osdep_get_name(int, char *);
! 37: char *osdep_get_cwd(int);
! 38: struct event_base *osdep_event_init(void);
! 39:
! 40: struct kinfo_proc2 *
! 41: cmp_procs(struct kinfo_proc2 *p1, struct kinfo_proc2 *p2)
! 42: {
! 43: if (is_runnable(p1) && !is_runnable(p2))
! 44: return (p1);
! 45: if (!is_runnable(p1) && is_runnable(p2))
! 46: return (p2);
! 47:
! 48: if (is_stopped(p1) && !is_stopped(p2))
! 49: return (p1);
! 50: if (!is_stopped(p1) && is_stopped(p2))
! 51: return (p2);
! 52:
! 53: if (p1->p_estcpu > p2->p_estcpu)
! 54: return (p1);
! 55: if (p1->p_estcpu < p2->p_estcpu)
! 56: return (p2);
! 57:
! 58: if (p1->p_slptime < p2->p_slptime)
! 59: return (p1);
! 60: if (p1->p_slptime > p2->p_slptime)
! 61: return (p2);
! 62:
! 63: if (p1->p_pid > p2->p_pid)
! 64: return (p1);
! 65: return (p2);
! 66: }
! 67:
! 68: char *
! 69: osdep_get_name(int fd, __unused char *tty)
! 70: {
! 71: int mib[6];
! 72: struct stat sb;
! 73: size_t len, i;
! 74: struct kinfo_proc2 *buf, *newbuf, *bestp;
! 75: char *name;
! 76:
! 77: if (stat(tty, &sb) == -1)
! 78: return (NULL);
! 79: if ((mib[3] = tcgetpgrp(fd)) == -1)
! 80: return (NULL);
! 81:
! 82: buf = NULL;
! 83: len = sizeof bestp;
! 84:
! 85: mib[0] = CTL_KERN;
! 86: mib[1] = KERN_PROC2;
! 87: mib[2] = KERN_PROC_PGRP;
! 88: mib[4] = sizeof *buf;
! 89:
! 90: retry:
! 91: mib[5] = 0;
! 92:
! 93: if (sysctl(mib, __arraycount(mib), NULL, &len, NULL, 0) == -1)
! 94: return (NULL);
! 95:
! 96: if ((newbuf = realloc(buf, len)) == NULL)
! 97: goto error;
! 98: buf = newbuf;
! 99:
! 100: mib[5] = len / (sizeof *buf);
! 101: if (sysctl(mib, __arraycount(mib), buf, &len, NULL, 0) == -1) {
! 102: if (errno == ENOMEM)
! 103: goto retry;
! 104: goto error;
! 105: }
! 106:
! 107: bestp = NULL;
! 108: for (i = 0; i < len / (sizeof *buf); i++) {
! 109: if (buf[i].p_tdev != sb.st_rdev)
! 110: continue;
! 111: if (bestp == NULL)
! 112: bestp = &buf[i];
! 113: else
! 114: bestp = cmp_procs(&buf[i], bestp);
! 115: }
! 116:
! 117: name = NULL;
! 118: if (bestp != NULL)
! 119: name = strdup(bestp->p_comm);
! 120:
! 121: free(buf);
! 122: return (name);
! 123:
! 124: error:
! 125: free(buf);
! 126: return (NULL);
! 127: }
! 128:
! 129: char *
! 130: osdep_get_cwd(int fd)
! 131: {
! 132: return (NULL);
! 133: }
! 134:
! 135: struct event_base *
! 136: osdep_event_init(void)
! 137: {
! 138: return (event_init());
! 139: }
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