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-rw-r--r--osdep-netbsd.c169
1 files changed, 169 insertions, 0 deletions
diff --git a/osdep-netbsd.c b/osdep-netbsd.c
new file mode 100644
index 0000000..6003c03
--- /dev/null
+++ b/osdep-netbsd.c
@@ -0,0 +1,169 @@
+/* $OpenBSD$ */
+
+/*
+ * 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/proc.h>
+#include <sys/stat.h>
+#include <sys/sysctl.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "tmux.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 *);
+
+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;
+
+retry:
+ mib[5] = 0;
+
+ if (sysctl(mib, __arraycount(mib), NULL, &len, NULL, 0) == -1)
+ return (NULL);
+
+ if ((newbuf = realloc(buf, len)) == 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;
+ 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)
+{
+ static char target[PATH_MAX + 1];
+ pid_t pgrp;
+#ifdef KERN_PROC_CWD
+ int mib[4];
+ size_t len;
+#else
+ char *path;
+ ssize_t n;
+#endif
+
+ if ((pgrp = tcgetpgrp(fd)) == -1)
+ return (NULL);
+
+#ifdef KERN_PROC_CWD
+ mib[0] = CTL_KERN;
+ mib[1] = KERN_PROC_ARGS;
+ mib[2] = pgrp;
+ mib[3] = KERN_PROC_CWD;
+ len = sizeof(target);
+ if (sysctl(mib, __arraycount(mib), target, &len, NULL, 0) == 0)
+ return (target);
+#else
+ xasprintf(&path, "/proc/%lld/cwd", (long long) pgrp);
+ n = readlink(path, target, sizeof(target) - 1);
+ free(path);
+ if (n > 0) {
+ target[n] = '\0';
+ return (target);
+ }
+#endif
+
+ return (NULL);
+}
+
+struct event_base *
+osdep_event_init(void)
+{
+ return (event_init());
+}