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Alter how tmux handles the working directory to internally use file

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descriptors rather than strings.

- Each session still has a current working directory.

- New sessions still get their working directory from the client that
  created them or its attached session if any.

- New windows are created by default in the session working directory.

- The -c flag to new, neww, splitw allows the working directory to be
  overridden.

- The -c flag to attach let's the session working directory be changed.

- The default-path option has been removed.

To get the equivalent to default-path '.', do:

        bind c neww -c $PWD

To get the equivalent of default-path '~', do:

        bind c neww -c ~

This also changes the client identify protocol to be a set of messages rather
than one as well as some other changes that should make it easier to make
backwards-compatible protocol changes in future.
This commit is contained in:
nicm
2013-10-10 12:26:34 +00:00
parent 165aa59760
commit 282c5f9644
17 changed files with 363 additions and 300 deletions
Download Patch File Download Diff File Expand all files Collapse all files

123
server-client.c
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@@ -41,8 +41,7 @@ int server_client_assume_paste(struct session *);
int server_client_msg_dispatch(struct client *);
void server_client_msg_command(struct client *, struct imsg *);
void server_client_msg_identify(
struct client *, struct msg_identify_data *, int);
void server_client_msg_identify(struct client *, struct imsg *);
void server_client_msg_shell(struct client *);
/* Create a new client. */
@@ -151,6 +150,8 @@ server_client_lost(struct client *c)
*/
if (c->flags & CLIENT_TERMINAL)
tty_free(&c->tty);
free(c->ttyname);
free(c->term);
evbuffer_free (c->stdin_data);
evbuffer_free (c->stdout_data);
@@ -162,6 +163,7 @@ server_client_lost(struct client *c)
screen_free(&c->status);
free(c->title);
close(c->cwd);
evtimer_del(&c->repeat_timer);
@@ -179,7 +181,6 @@ server_client_lost(struct client *c)
free(c->prompt_string);
free(c->prompt_buffer);
free(c->cwd);
c->cmdq->dead = 1;
cmdq_free(c->cmdq);
@@ -786,8 +787,6 @@ int
server_client_msg_dispatch(struct client *c)
{
struct imsg imsg;
struct msg_identify_data identifydata;
struct msg_environ_data environdata;
struct msg_stdin_data stdindata;
const char *data;
ssize_t n, datalen;
@@ -813,12 +812,14 @@ server_client_msg_dispatch(struct client *c)
log_debug("got %d from client %d", imsg.hdr.type, c->ibuf.fd);
switch (imsg.hdr.type) {
case MSG_IDENTIFY:
if (datalen != sizeof identifydata)
fatalx("bad MSG_IDENTIFY size");
memcpy(&identifydata, imsg.data, sizeof identifydata);
server_client_msg_identify(c, &identifydata, imsg.fd);
case MSG_IDENTIFY_FLAGS:
case MSG_IDENTIFY_TERM:
case MSG_IDENTIFY_TTYNAME:
case MSG_IDENTIFY_CWD:
case MSG_IDENTIFY_STDIN:
case MSG_IDENTIFY_ENVIRON:
case MSG_IDENTIFY_DONE:
server_client_msg_identify(c, &imsg);
break;
case MSG_COMMAND:
server_client_msg_command(c, &imsg);
@@ -876,23 +877,12 @@ server_client_msg_dispatch(struct client *c)
server_redraw_client(c);
recalculate_sizes();
break;
case MSG_ENVIRON:
if (datalen != sizeof environdata)
fatalx("bad MSG_ENVIRON size");
memcpy(&environdata, imsg.data, sizeof environdata);
environdata.var[(sizeof environdata.var) - 1] = '\0';
if (strchr(environdata.var, '=') != NULL)
environ_put(&c->environ, environdata.var);
break;
case MSG_SHELL:
if (datalen != 0)
fatalx("bad MSG_SHELL size");
server_client_msg_shell(c);
break;
default:
fatalx("unexpected message");
}
imsg_free(&imsg);
@@ -951,46 +941,99 @@ error:
/* Handle identify message. */
void
server_client_msg_identify(
struct client *c, struct msg_identify_data *data, int fd)
server_client_msg_identify(struct client *c, struct imsg *imsg)
{
c->cwd = NULL;
data->cwd[(sizeof data->cwd) - 1] = '\0';
if (*data->cwd != '\0')
c->cwd = xstrdup(data->cwd);
const char *data;
size_t datalen;
int flags;
if (data->flags & CLIENT_CONTROL) {
if (c->flags & CLIENT_IDENTIFIED)
fatalx("out-of-order identify message");
data = imsg->data;
datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
switch (imsg->hdr.type) {
case MSG_IDENTIFY_FLAGS:
if (datalen != sizeof flags)
fatalx("bad MSG_IDENTIFY_FLAGS size");
memcpy(&flags, data, sizeof flags);
c->flags |= flags;
break;
case MSG_IDENTIFY_TERM:
if (data[datalen - 1] != '\0')
fatalx("bad MSG_IDENTIFY_TERM string");
c->term = xstrdup(data);
break;
case MSG_IDENTIFY_TTYNAME:
if (data[datalen - 1] != '\0')
fatalx("bad MSG_IDENTIFY_TTYNAME string");
c->ttyname = xstrdup(data);
break;
case MSG_IDENTIFY_CWD:
if (datalen != 0)
fatalx("bad MSG_IDENTIFY_CWD size");
c->cwd = imsg->fd;
break;
case MSG_IDENTIFY_STDIN:
if (datalen != 0)
fatalx("bad MSG_IDENTIFY_STDIN size");
c->fd = imsg->fd;
break;
case MSG_IDENTIFY_ENVIRON:
if (data[datalen - 1] != '\0')
fatalx("bad MSG_IDENTIFY_ENVIRON string");
if (strchr(data, '=') != NULL)
environ_put(&c->environ, data);
break;
default:
break;
}
if (imsg->hdr.type != MSG_IDENTIFY_DONE)
return;
c->flags |= CLIENT_IDENTIFIED;
#ifdef __CYGWIN__
c->fd = open(c->ttyname, O_RDWR|O_NOCTTY);
c->cwd = open(".", O_RDONLY);
#endif
if (c->flags & CLIENT_CONTROL) {
c->stdin_callback = control_callback;
evbuffer_free(c->stderr_data);
c->stderr_data = c->stdout_data;
c->flags |= CLIENT_CONTROL;
if (data->flags & CLIENT_CONTROLCONTROL)
if (c->flags & CLIENT_CONTROLCONTROL)
evbuffer_add_printf(c->stdout_data, "\033P1000p");
server_write_client(c, MSG_STDIN, NULL, 0);
c->tty.fd = -1;
c->tty.log_fd = -1;
close(fd);
close(c->fd);
c->fd = -1;
return;
}
if (fd == -1)
if (c->fd == -1)
return;
if (!isatty(fd)) {
close(fd);
if (!isatty(c->fd)) {
close(c->fd);
c->fd = -1;
return;
}
data->term[(sizeof data->term) - 1] = '\0';
tty_init(&c->tty, c, fd, data->term);
if (data->flags & CLIENT_UTF8)
tty_init(&c->tty, c, c->fd, c->term);
if (c->flags & CLIENT_UTF8)
c->tty.flags |= TTY_UTF8;
if (data->flags & CLIENT_256COLOURS)
if (c->flags & CLIENT_256COLOURS)
c->tty.term_flags |= TERM_256COLOURS;
tty_resize(&c->tty);
if (!(data->flags & CLIENT_CONTROL))
if (!(c->flags & CLIENT_CONTROL))
c->flags |= CLIENT_TERMINAL;
}