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Sync OpenBSD patchset 386:

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Convert if-shell over to the background job framework as well.
This commit is contained in:
Tiago Cunha
2009-10-12 00:29:03 +00:00
parent 50ece89ab9
commit a053aeddf8
1 changed files with 58 additions and 90 deletions
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148
cmd-if-shell.c
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@@ -1,7 +1,8 @@
/* $Id: cmd-if-shell.c,v 1.5 2009-09-22 14:06:40 tcunha Exp $ */
/* $Id: cmd-if-shell.c,v 1.6 2009-10-12 00:29:03 tcunha Exp $ */
/*
* Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
* Copyright (c) 2009 Nicholas Marriott <nicm@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@@ -17,9 +18,8 @@
*/
#include <sys/types.h>
#include <sys/wait.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
@@ -28,124 +28,92 @@
* Executes a tmux command if a shell command returns true.
*/
int cmd_if_shell_parse(struct cmd *, int, char **, char **);
int cmd_if_shell_exec(struct cmd *, struct cmd_ctx *);
void cmd_if_shell_free(struct cmd *);
void cmd_if_shell_init(struct cmd *, int);
size_t cmd_if_shell_print(struct cmd *, char *, size_t);
struct cmd_if_shell_data {
char *cmd;
char *sh_cmd;
};
void cmd_if_shell_callback(struct job *);
void cmd_if_shell_free(void *);
const struct cmd_entry cmd_if_shell_entry = {
"if-shell", "if",
"shell-command command",
0, 0,
cmd_if_shell_init,
cmd_if_shell_parse,
CMD_ARG2, 0,
cmd_target_init,
cmd_target_parse,
cmd_if_shell_exec,
cmd_if_shell_free,
cmd_if_shell_print
cmd_target_free,
cmd_target_print
};
void
cmd_if_shell_init(struct cmd *self, unused int arg)
{
struct cmd_if_shell_data *data;
self->data = data = xmalloc(sizeof *data);
data->cmd = NULL;
data->sh_cmd = NULL;
}
int
cmd_if_shell_parse(struct cmd *self, int argc, char **argv, char **cause)
{
struct cmd_if_shell_data *data;
int opt;
self->entry->init(self, KEYC_NONE);
data = self->data;
while ((opt = getopt(argc, argv, "")) != -1) {
switch (opt) {
default:
goto usage;
}
}
argc -= optind;
argv += optind;
if (argc != 2)
goto usage;
data->sh_cmd = xstrdup(argv[0]);
data->cmd = xstrdup(argv[1]);
return (0);
usage:
xasprintf(cause, "usage: %s %s", self->entry->name, self->entry->usage);
self->entry->free(self);
return (-1);
}
struct cmd_if_shell_data {
char *cmd;
struct cmd_ctx ctx;
};
int
cmd_if_shell_exec(struct cmd *self, struct cmd_ctx *ctx)
{
struct cmd_if_shell_data *data = self->data;
struct cmd_target_data *data = self->data;
struct cmd_if_shell_data *cdata;
struct job *job;
cdata = xmalloc(sizeof *cdata);
cdata->cmd = xstrdup(data->arg2);
memcpy(&cdata->ctx, ctx, sizeof cdata->ctx);
if (ctx->cmdclient != NULL)
ctx->cmdclient->references++;
if (ctx->curclient != NULL)
ctx->curclient->references++;
job = job_add(NULL, NULL,
data->arg, cmd_if_shell_callback, cmd_if_shell_free, cdata);
job_run(job);
return (1); /* don't let client exit */
}
void
cmd_if_shell_callback(struct job *job)
{
struct cmd_if_shell_data *cdata = job->data;
struct cmd_ctx *ctx = &cdata->ctx;
struct cmd_list *cmdlist;
char *cause;
int ret;
if ((ret = system(data->sh_cmd)) < 0) {
ctx->error(ctx, "system error: %s", strerror(errno));
return (-1);
} else if (ret != 0)
return (0);
if (!WIFEXITED(job->status) || WEXITSTATUS(job->status) != 0) {
job_free(job); /* calls cmd_if_shell_free */
return;
}
if (cmd_string_parse(data->cmd, &cmdlist, &cause) != 0) {
if (cmd_string_parse(cdata->cmd, &cmdlist, &cause) != 0) {
if (cause != NULL) {
ctx->error(ctx, "%s", cause);
xfree(cause);
}
return (-1);
return;
}
if (cmd_list_exec(cmdlist, ctx) < 0) {
cmd_list_free(cmdlist);
return (-1);
return;
}
cmd_list_free(cmdlist);
return (0);
}
void
cmd_if_shell_free(struct cmd *self)
cmd_if_shell_free(void *data)
{
struct cmd_if_shell_data *data = self->data;
struct cmd_if_shell_data *cdata = data;
struct cmd_ctx *ctx = &cdata->ctx;
if (data->cmd != NULL)
xfree(data->cmd);
if (data->sh_cmd != NULL)
xfree(data->sh_cmd);
xfree(data);
}
size_t
cmd_if_shell_print(struct cmd *self, char *buf, size_t len)
{
struct cmd_if_shell_data *data = self->data;
size_t off = 0;
off += xsnprintf(buf, len, "%s", self->entry->name);
if (data == NULL)
return (off);
if (off < len && data->sh_cmd != NULL)
off += cmd_prarg(buf + off, len - off, " ", data->sh_cmd);
if (off < len && data->cmd != NULL)
off += cmd_prarg(buf + off, len - off, " ", data->cmd);
return (off);
if (ctx->cmdclient != NULL) {
ctx->cmdclient->references--;
server_write_client(ctx->cmdclient, MSG_EXIT, NULL, 0);
}
if (ctx->curclient != NULL)
ctx->curclient->references--;
xfree(cdata->cmd);
xfree(cdata);
}