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Sync OpenBSD patchset 727:

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Setting the cmdlist pointer in the bind-key to NULL to prevent it being freed
after the command is executing is bogus because it may still be needed if the
same command is going to be executed again (for example if you "bind-key a
bind-key b ..."). Making a copy is hard, so instead add a reference count to
the cmd_list.

While here, also print bind-key -n and the rest of the flags properly.

Fixes problem reported by mcbride@.
This commit is contained in:
Tiago Cunha 2010-07-02 02:43:01 +00:00
parent 0e70c8801c
commit 03c1c1cd9f
5 changed files with 37 additions and 20 deletions
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15
cmd-bind-key.c
View File

@ -1,4 +1,4 @@
/* $Id: cmd-bind-key.c,v 1.28 2010-01-25 17:12:44 tcunha Exp $ */
/* $Id: cmd-bind-key.c,v 1.29 2010-07-02 02:43:01 tcunha Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -130,7 +130,7 @@ cmd_bind_key_exec(struct cmd *self, unused struct cmd_ctx *ctx)
return (cmd_bind_key_table(self, ctx));
key_bindings_add(data->key, data->can_repeat, data->cmdlist);
data->cmdlist = NULL; /* avoid free */
data->cmdlist->references++;
return (0);
}
@ -192,8 +192,17 @@ cmd_bind_key_print(struct cmd *self, char *buf, size_t len)
off += xsnprintf(buf, len, "%s", self->entry->name);
if (data == NULL)
return (off);
if (off < len && data->command_key)
off += xsnprintf(buf + off, len - off, " -c");
if (off < len && !(data->key & KEYC_PREFIX))
off += xsnprintf(buf + off, len - off, " -n");
if (off < len && data->can_repeat)
off += xsnprintf(buf + off, len - off, " -r");
if (off < len && data->tablename != NULL)
off += cmd_prarg(buf + off, len - off, " -t ", data->tablename);
if (off < len) {
skey = key_string_lookup_key(data->key);
skey = key_string_lookup_key(data->key & ~KEYC_PREFIX);
off += xsnprintf(buf + off, len - off, " %s ", skey);
}
if (off < len)

22
cmd-list.c
View File

@ -1,4 +1,4 @@
/* $Id: cmd-list.c,v 1.8 2010-03-18 21:06:40 nicm Exp $ */
/* $Id: cmd-list.c,v 1.9 2010-07-02 02:43:01 tcunha Exp $ */
/*
* Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
@ -32,7 +32,8 @@ cmd_list_parse(int argc, char **argv, char **cause)
char **new_argv;
cmdlist = xmalloc(sizeof *cmdlist);
TAILQ_INIT(cmdlist);
cmdlist->references = 1;
TAILQ_INIT(&cmdlist->list);
lastsplit = 0;
for (i = 0; i < argc; i++) {
@ -54,7 +55,7 @@ cmd_list_parse(int argc, char **argv, char **cause)
cmd = cmd_parse(new_argc, new_argv, cause);
if (cmd == NULL)
goto bad;
TAILQ_INSERT_TAIL(cmdlist, cmd, qentry);
TAILQ_INSERT_TAIL(&cmdlist->list, cmd, qentry);
lastsplit = i + 1;
}
@ -63,7 +64,7 @@ cmd_list_parse(int argc, char **argv, char **cause)
cmd = cmd_parse(argc - lastsplit, argv + lastsplit, cause);
if (cmd == NULL)
goto bad;
TAILQ_INSERT_TAIL(cmdlist, cmd, qentry);
TAILQ_INSERT_TAIL(&cmdlist->list, cmd, qentry);
}
return (cmdlist);
@ -80,7 +81,7 @@ cmd_list_exec(struct cmd_list *cmdlist, struct cmd_ctx *ctx)
int n, retval;
retval = 0;
TAILQ_FOREACH(cmd, cmdlist, qentry) {
TAILQ_FOREACH(cmd, &cmdlist->list, qentry) {
if ((n = cmd_exec(cmd, ctx)) == -1)
return (-1);
@ -114,9 +115,12 @@ cmd_list_free(struct cmd_list *cmdlist)
{
struct cmd *cmd;
while (!TAILQ_EMPTY(cmdlist)) {
cmd = TAILQ_FIRST(cmdlist);
TAILQ_REMOVE(cmdlist, cmd, qentry);
if (--cmdlist->references != 0)
return;
while (!TAILQ_EMPTY(&cmdlist->list)) {
cmd = TAILQ_FIRST(&cmdlist->list);
TAILQ_REMOVE(&cmdlist->list, cmd, qentry);
cmd_free(cmd);
}
xfree(cmdlist);
@ -129,7 +133,7 @@ cmd_list_print(struct cmd_list *cmdlist, char *buf, size_t len)
size_t off;
off = 0;
TAILQ_FOREACH(cmd, cmdlist, qentry) {
TAILQ_FOREACH(cmd, &cmdlist->list, qentry) {
if (off >= len)
break;
off += cmd_print(cmd, buf + off, len - off);

9
key-bindings.c
View File

@ -1,4 +1,4 @@
/* $Id: key-bindings.c,v 1.93 2010-06-22 23:35:20 tcunha Exp $ */
/* $Id: key-bindings.c,v 1.94 2010-07-02 02:43:01 tcunha Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -178,14 +178,15 @@ key_bindings_init(void)
for (i = 0; i < nitems(table); i++) {
cmdlist = xmalloc(sizeof *cmdlist);
TAILQ_INIT(cmdlist);
TAILQ_INIT(&cmdlist->list);
cmdlist->references = 1;
cmd = xmalloc(sizeof *cmd);
cmd->entry = table[i].entry;
cmd->data = NULL;
if (cmd->entry->init != NULL)
cmd->entry->init(cmd, table[i].key);
TAILQ_INSERT_HEAD(cmdlist, cmd, qentry);
TAILQ_INSERT_HEAD(&cmdlist->list, cmd, qentry);
key_bindings_add(
table[i].key | KEYC_PREFIX, table[i].can_repeat, cmdlist);
@ -259,7 +260,7 @@ key_bindings_dispatch(struct key_binding *bd, struct client *c)
ctx.cmdclient = NULL;
readonly = 1;
TAILQ_FOREACH(cmd, bd->cmdlist, qentry) {
TAILQ_FOREACH(cmd, &bd->cmdlist->list, qentry) {
if (!(cmd->entry->flags & CMD_READONLY))
readonly = 0;
}

4
tmux.c
View File

@ -1,4 +1,4 @@
/* $Id: tmux.c,v 1.209 2010-06-05 23:56:29 tcunha Exp $ */
/* $Id: tmux.c,v 1.210 2010-07-02 02:43:01 tcunha Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -520,7 +520,7 @@ main(int argc, char **argv)
exit(1);
}
cmdflags &= ~CMD_STARTSERVER;
TAILQ_FOREACH(cmd, cmdlist, qentry) {
TAILQ_FOREACH(cmd, &cmdlist->list, qentry) {
if (cmd->entry->flags & CMD_STARTSERVER)
cmdflags |= CMD_STARTSERVER;
if (cmd->entry->flags & CMD_SENDENVIRON)

7
tmux.h
View File

@ -1,4 +1,4 @@
/* $Id: tmux.h,v 1.564 2010-06-22 23:35:20 tcunha Exp $ */
/* $Id: tmux.h,v 1.565 2010-07-02 02:43:01 tcunha Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -1160,7 +1160,10 @@ struct cmd {
TAILQ_ENTRY(cmd) qentry;
};
TAILQ_HEAD(cmd_list, cmd);
struct cmd_list {
int references;
TAILQ_HEAD(, cmd) list;
};
struct cmd_entry {
const char *name;