mirror of
https://github.com/tmate-io/tmate.git
synced 2024-12-24 15:48:58 +01:00
138 lines
3.1 KiB
C
138 lines
3.1 KiB
C
/* $Id$ */
|
|
|
|
/*
|
|
* Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
|
|
*
|
|
* 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/proc.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/sysctl.h>
|
|
|
|
#include <errno.h>
|
|
#include <event.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#define is_runnable(p) \
|
|
((p)->p_stat == LSRUN || (p)->p_stat == SIDL)
|
|
#define is_stopped(p) \
|
|
((p)->p_stat == SSTOP || (p)->p_stat == SZOMB)
|
|
|
|
struct kinfo_proc2 *cmp_procs(struct kinfo_proc2 *, struct kinfo_proc2 *);
|
|
char *osdep_get_name(int, char *);
|
|
char *osdep_get_cwd(int);
|
|
struct event_base *osdep_event_init(void);
|
|
|
|
struct kinfo_proc2 *
|
|
cmp_procs(struct kinfo_proc2 *p1, struct kinfo_proc2 *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_pid > p2->p_pid)
|
|
return (p1);
|
|
return (p2);
|
|
}
|
|
|
|
char *
|
|
osdep_get_name(int fd, __unused char *tty)
|
|
{
|
|
int mib[6];
|
|
struct stat sb;
|
|
size_t len, i;
|
|
struct kinfo_proc2 *buf, *newbuf, *bestp;
|
|
char *name;
|
|
|
|
if (stat(tty, &sb) == -1)
|
|
return (NULL);
|
|
if ((mib[3] = tcgetpgrp(fd)) == -1)
|
|
return (NULL);
|
|
|
|
buf = NULL;
|
|
len = sizeof(bestp);
|
|
mib[0] = CTL_KERN;
|
|
mib[1] = KERN_PROC2;
|
|
mib[2] = KERN_PROC_PGRP;
|
|
mib[4] = sizeof (*buf);
|
|
mib[5] = 0;
|
|
|
|
retry:
|
|
if (sysctl(mib, __arraycount(mib), NULL, &len, NULL, 0) == -1)
|
|
return (NULL);
|
|
|
|
if ((newbuf = realloc(buf, len * sizeof (*buf))) == NULL)
|
|
goto error;
|
|
buf = newbuf;
|
|
|
|
mib[5] = len / sizeof(*buf);
|
|
if (sysctl(mib, __arraycount(mib), buf, &len, NULL, 0) == -1) {
|
|
if (errno == ENOMEM)
|
|
goto retry; /* possible infinite loop? */
|
|
goto error;
|
|
}
|
|
|
|
bestp = NULL;
|
|
for (i = 0; i < len / sizeof (*buf); i++) {
|
|
if (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);
|
|
}
|
|
|
|
char *
|
|
osdep_get_cwd(int fd)
|
|
{
|
|
return (NULL);
|
|
}
|
|
|
|
struct event_base *
|
|
osdep_event_init(void)
|
|
{
|
|
return (event_init());
|
|
}
|