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c1b9948525
default-path isn't empty, it is used. Otherwise: 1) If tmux neww is run from the command line, the working directory of the client is used. 2) Otherwise use some platform specific code to retrieve the current working directory of the process in the active pane. 3) If that fails, the directory where the session was created is used. Idea and support code, Linux, Solaris, FreeBSD bits by Romain Francoise, OpenBSD bits by me.
167 lines
3.7 KiB
C
167 lines
3.7 KiB
C
/* $Id$ */
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/*
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* Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/stat.h>
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#include <sys/sysctl.h>
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#include <sys/user.h>
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#include <err.h>
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#include <errno.h>
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#include <event.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <libutil.h>
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struct kinfo_proc *cmp_procs(struct kinfo_proc *, struct kinfo_proc *);
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char *osdep_get_name(int, char *);
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char *osdep_get_cwd(pid_t);
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struct event_base *osdep_event_init(void);
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#ifndef nitems
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#define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
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#endif
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#define is_runnable(p) \
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((p)->ki_stat == SRUN || (p)->ki_stat == SIDL)
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#define is_stopped(p) \
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((p)->ki_stat == SSTOP || (p)->ki_stat == SZOMB)
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struct kinfo_proc *
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cmp_procs(struct kinfo_proc *p1, struct kinfo_proc *p2)
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{
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if (is_runnable(p1) && !is_runnable(p2))
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return (p1);
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if (!is_runnable(p1) && is_runnable(p2))
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return (p2);
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if (is_stopped(p1) && !is_stopped(p2))
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return (p1);
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if (!is_stopped(p1) && is_stopped(p2))
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return (p2);
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if (p1->ki_estcpu > p2->ki_estcpu)
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return (p1);
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if (p1->ki_estcpu < p2->ki_estcpu)
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return (p2);
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if (p1->ki_slptime < p2->ki_slptime)
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return (p1);
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if (p1->ki_slptime > p2->ki_slptime)
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return (p2);
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if (strcmp(p1->ki_comm, p2->ki_comm) < 0)
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return (p1);
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if (strcmp(p1->ki_comm, p2->ki_comm) > 0)
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return (p2);
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if (p1->ki_pid > p2->ki_pid)
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return (p1);
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return (p2);
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}
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char *
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osdep_get_name(int fd, char *tty)
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{
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int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PGRP, 0 };
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struct stat sb;
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size_t len;
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struct kinfo_proc *buf, *newbuf, *bestp;
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u_int i;
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char *name;
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buf = NULL;
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if (stat(tty, &sb) == -1)
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return (NULL);
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if ((mib[3] = tcgetpgrp(fd)) == -1)
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return (NULL);
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retry:
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if (sysctl(mib, nitems(mib), NULL, &len, NULL, 0) == -1)
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return (NULL);
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len = (len * 5) / 4;
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if ((newbuf = realloc(buf, len)) == NULL)
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goto error;
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buf = newbuf;
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if (sysctl(mib, nitems(mib), buf, &len, NULL, 0) == -1) {
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if (errno == ENOMEM)
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goto retry;
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goto error;
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}
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bestp = NULL;
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for (i = 0; i < len / sizeof (struct kinfo_proc); i++) {
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if (buf[i].ki_tdev != sb.st_rdev)
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continue;
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if (bestp == NULL)
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bestp = &buf[i];
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else
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bestp = cmp_procs(&buf[i], bestp);
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}
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name = NULL;
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if (bestp != NULL)
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name = strdup(bestp->ki_comm);
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free(buf);
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return (name);
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error:
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free(buf);
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return (NULL);
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}
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char *
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osdep_get_cwd(pid_t pid)
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{
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static char wd[PATH_MAX];
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struct kinfo_file *info = NULL;
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int nrecords, i;
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if ((info = kinfo_getfile(pid, &nrecords)) == NULL)
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return (NULL);
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for (i = 0; i < nrecords; i++) {
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if (info[i].kf_fd == KF_FD_TYPE_CWD) {
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strlcpy(wd, info[i].kf_path, sizeof wd);
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free(info);
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return (wd);
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}
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}
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free(info);
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return (NULL);
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}
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struct event_base *
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osdep_event_init(void)
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{
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/*
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* On some versions of FreeBSD, kqueue doesn't work properly on tty
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* file descriptors. This is fixed in recent FreeBSD versions.
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*/
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setenv("EVENT_NOKQUEUE", "1", 1);
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return (event_init());
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}
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