tmux/cmd-server-info.c
Tiago Cunha a9b6bfdddd Sync OpenBSD patchset 243:
Switch tmux to use imsg. This is the last major change to make the
client-server protocol more resilient and make the protocol versioning work
properly. In future, the only things requiring a protocol version bump will be
changes in the message structs, and (when both client and server have this
change) mixing different versions should nicely report an error message.

As a side effect this also makes the code tidier, fixes a problem with the way
errors reported during server startup were handled, and supports fd passing
(which will be used in future).

Looked over by eric@, thanks.

Please note that mixing a client with this change with an older server or vice
versa may cause tmux to crash or hang - tmux should be completely exited before
upgrading.
2009-08-14 21:04:04 +00:00

181 lines
5.1 KiB
C

/* $Id: cmd-server-info.c,v 1.25 2009-08-14 21:04:04 tcunha Exp $ */
/*
* Copyright (c) 2008 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/types.h>
#include <sys/utsname.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "tmux.h"
/*
* Show various information about server.
*/
int cmd_server_info_exec(struct cmd *, struct cmd_ctx *);
const struct cmd_entry cmd_server_info_entry = {
"server-info", "info",
"",
0, 0,
NULL,
NULL,
cmd_server_info_exec,
NULL,
NULL
};
int
cmd_server_info_exec(unused struct cmd *self, struct cmd_ctx *ctx)
{
struct tty_term *term;
struct client *c;
struct session *s;
struct winlink *wl;
struct window *w;
struct window_pane *wp;
struct tty_code *code;
struct tty_term_code_entry *ent;
struct utsname un;
struct grid *gd;
struct grid_line *gl;
u_int i, j, k;
char out[80];
char *tim;
time_t t;
u_int lines, ulines;
size_t size, usize;
tim = ctime(&start_time);
*strchr(tim, '\n') = '\0';
ctx->print(ctx,
"tmux " BUILD ", pid %ld, started %s", (long) getpid(), tim);
ctx->print(ctx, "socket path %s, debug level %d%s",
socket_path, debug_level, be_quiet ? ", quiet" : "");
if (uname(&un) == 0) {
ctx->print(ctx, "system is %s %s %s %s",
un.sysname, un.release, un.version, un.machine);
}
if (cfg_file != NULL)
ctx->print(ctx, "configuration file is %s", cfg_file);
else
ctx->print(ctx, "configuration file not specified");
ctx->print(ctx, "protocol version is %d", PROTOCOL_VERSION);
ctx->print(ctx, "%u clients, %u sessions",
ARRAY_LENGTH(&clients), ARRAY_LENGTH(&sessions));
ctx->print(ctx, "");
ctx->print(ctx, "Clients:");
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c == NULL || c->session == NULL)
continue;
ctx->print(ctx, "%2d: %s (%d, %d): %s [%ux%u %s] "
"[flags=0x%x/0x%x]", i, c->tty.path, c->ibuf.fd, c->tty.fd,
c->session->name, c->tty.sx, c->tty.sy, c->tty.termname,
c->flags, c->tty.flags);
}
ctx->print(ctx, "");
ctx->print(ctx, "Sessions: [%zu/%zu]",
sizeof (struct grid_cell), sizeof (struct grid_utf8));
for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
s = ARRAY_ITEM(&sessions, i);
if (s == NULL)
continue;
t = s->tv.tv_sec;
tim = ctime(&t);
*strchr(tim, '\n') = '\0';
ctx->print(ctx, "%2u: %s: %u windows (created %s) [%ux%u] "
"[flags=0x%x]", i, s->name, winlink_count(&s->windows),
tim, s->sx, s->sy, s->flags);
RB_FOREACH(wl, winlinks, &s->windows) {
w = wl->window;
ctx->print(ctx, "%4u: %s [%ux%u] [flags=0x%x, "
"references=%u, last layout=%d]", wl->idx, w->name,
w->sx, w->sy, w->flags, w->references,
w->lastlayout);
j = 0;
TAILQ_FOREACH(wp, &w->panes, entry) {
lines = ulines = size = usize = 0;
gd = wp->base.grid;
for (k = 0; k < gd->hsize + gd->sy; k++) {
gl = &gd->linedata[k];
if (gl->celldata != NULL) {
lines++;
size += gl->cellsize *
sizeof *gl->celldata;
}
if (gl->utf8data != NULL) {
ulines++;
usize += gl->utf8size *
sizeof *gl->utf8data;
}
}
ctx->print(ctx, "%6u: %s %lu %d %u/%u, %zu "
"bytes; UTF-8 %u/%u, %zu bytes", j,
wp->tty, (u_long) wp->pid, wp->fd, lines,
gd->hsize + gd->sy, size, ulines,
gd->hsize + gd->sy, usize);
j++;
}
}
}
ctx->print(ctx, "");
ctx->print(ctx, "Terminals:");
SLIST_FOREACH(term, &tty_terms, entry) {
ctx->print(ctx, "%s [references=%u, flags=0x%x]:",
term->name, term->references, term->flags);
for (i = 0; i < NTTYCODE; i++) {
ent = &tty_term_codes[i];
code = &term->codes[ent->code];
switch (code->type) {
case TTYCODE_NONE:
ctx->print(ctx, "%2u: %s: [missing]",
ent->code, ent->name);
break;
case TTYCODE_STRING:
strnvis(out, code->value.string, sizeof out,
VIS_OCTAL|VIS_TAB|VIS_NL);
ctx->print(ctx, "%2u: %s: (string) %s",
ent->code, ent->name, out);
break;
case TTYCODE_NUMBER:
ctx->print(ctx, "%2u: %s: (number) %d",
ent->code, ent->name, code->value.number);
break;
case TTYCODE_FLAG:
ctx->print(ctx, "%2u: %s: (flag) %s",
ent->code, ent->name,
code->value.flag ? "true" : "false");
break;
}
}
}
ctx->print(ctx, "");
return (0);
}