/*
- * Copyright (C) 2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2006-2009 Andre Noll <maan@systemlinux.org>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ * Licensed under the GPL v2. For licencing details see COPYING.
*/
/** \file file_write.c simple output plugin for testing purposes */
+#include <regex.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <sys/time.h>
+#include <stdbool.h>
+
#include "para.h"
#include "list.h"
#include "sched.h"
+#include "ggo.h"
+#include "buffer_tree.h"
#include "write.h"
+#include "write_common.h"
#include "string.h"
#include "fd.h"
#include "file_write.cmdline.h"
#include "error.h"
-/** data specific to the file writer */
+/** Data specific to the file writer. */
struct private_file_write_data {
- /** the file descriptor of the output file */
+ /** The file descriptor of the output file. */
int fd;
- /** non-zero if \a fd was added to the write fd set */
- int check_fd;
};
+/*
+ * Get a random filename.
+ *
+ * This is by no means a secure way to create temporary files in a hostile
+ * directory like \p /tmp. However, we use it only for creating temp files in
+ * ~/.paraslash, for which it is OK. Result must be freed by the caller.
+ */
+__must_check __malloc static char *random_filename(void)
+{
+ char *result, *home = para_homedir();
+ struct timeval tv;
+
+ gettimeofday(&tv, NULL);
+ srandom(tv.tv_usec);
+ result = make_message("%s/.paraslash/%08lu", home,
+ para_random(99999999));
+ free(home);
+ return result;
+}
+
static int file_write_open(struct writer_node *wn)
{
struct private_file_write_data *pfwd = para_calloc(
sizeof(struct private_file_write_data));
struct file_write_args_info *conf = wn->conf;
char *filename;
+ int ret;
+
if (conf->filename_given)
filename = conf->filename_arg;
- else {
- char *tmp = para_tmpname(), *home = para_homedir();
- filename = make_message("%s/.paraslash/%s", home, tmp);
- free(home);
- free(tmp);
- }
+ else
+ filename = random_filename();
wn->private_data = pfwd;
- pfwd->fd = open(filename, O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR);
+ ret = para_open(filename, O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR);
if (!conf->filename_given)
free(filename);
- if (pfwd->fd >= 0)
- return 8192;
+ if (ret < 0)
+ goto out;
+ pfwd->fd = ret;
+ ret = mark_fd_blocking(pfwd->fd);
+ if (ret >= 0)
+ return 1;
+ close(pfwd->fd);
+out:
free(pfwd);
- return -E_FW_OPEN;
+ return ret;
}
-static int file_write_pre_select(struct sched *s, struct writer_node *wn)
+static void file_write_pre_select(struct sched *s, struct task *t)
{
+ struct writer_node *wn = container_of(t, struct writer_node, task);
struct private_file_write_data *pfwd = wn->private_data;
- struct writer_node_group *wng = wn->wng;
+ int ret;
- pfwd->check_fd = 0;
- if (pfwd->fd <= 0)
- return -E_FW_NO_FILE;
- if (!*wng->loaded)
- return 1;
- para_fd_set(pfwd->fd, &s->wfds, &s->max_fileno);
- pfwd->check_fd = 1;
- return 1;
+ t->error = 0;
+ ret = btr_node_status(wn->btrn, wn->min_iqs, BTR_NT_LEAF);
+ if (ret > 0)
+ para_fd_set(pfwd->fd, &s->wfds, &s->max_fileno);
+ else if (ret < 0)
+ sched_min_delay(s);
}
-static int file_write_post_select(struct sched *s, struct writer_node *wn)
+static void file_write_close(struct writer_node *wn)
{
struct private_file_write_data *pfwd = wn->private_data;
- struct writer_node_group *wng = wn->wng;
- int ret;
- if (!pfwd->check_fd)
- return 1;
- if (*wng->loaded <= wn->written)
- return 1;
- if (!FD_ISSET(pfwd->fd, &s->wfds))
- return 1;
-// PARA_INFO_LOG("writing %zd\n", *wng->loaded);
- ret = write(pfwd->fd, wng->buf + wn->written,
- *wng->loaded - wn->written);
- if (ret < 0)
- return -E_FW_WRITE;
- wn->written += ret;
- return 1;
+ close(pfwd->fd);
+ free(pfwd);
}
-static void file_write_close(struct writer_node *wn)
+static void file_write_post_select(__a_unused struct sched *s,
+ struct task *t)
{
+ struct writer_node *wn = container_of(t, struct writer_node, task);
struct private_file_write_data *pfwd = wn->private_data;
- close(pfwd->fd);
- free(pfwd);
+ struct btr_node *btrn = wn->btrn;
+ int ret;
+ char *buf;
+ size_t bytes;
+
+ t->error = 0;
+ ret = btr_node_status(btrn, wn->min_iqs, BTR_NT_LEAF);
+ if (ret <= 0)
+ goto out;
+ if (!FD_ISSET(pfwd->fd, &s->wfds))
+ return;
+ bytes = btr_next_buffer(btrn, &buf);
+ assert(bytes > 0);
+ //PARA_INFO_LOG("writing %zu\n", bytes);
+ ret = write(pfwd->fd, buf, bytes);
+ if (ret < 0)
+ goto out;
+ btr_consume(btrn, ret);
+out:
+ if (ret < 0)
+ btr_remove_node(btrn);
+ t->error = ret;
}
-__malloc void *file_write_parse_config(char *options)
+__malloc static void *file_write_parse_config(const char *options)
{
- PARA_INFO_LOG("options: %s\n", options);
struct file_write_args_info *conf
= para_calloc(sizeof(struct file_write_args_info));
int ret = file_cmdline_parser_string(options, conf, "file_write");
+
PARA_INFO_LOG("conf->filename_given: %d\n", conf->filename_given);
if (!ret)
return conf;
return NULL;
}
+static void file_write_free_config(void *conf)
+{
+ file_cmdline_parser_free(conf);
+}
+
/** the init function of the file writer */
void file_write_init(struct writer *w)
{
+ struct file_write_args_info dummy;
+
+ file_cmdline_parser_init(&dummy);
w->open = file_write_open;
w->pre_select = file_write_pre_select;
w->post_select = file_write_post_select;
w->parse_config = file_write_parse_config;
+ w->free_config = file_write_free_config;
w->close = file_write_close;
w->shutdown = NULL; /* nothing to do */
+ w->help = (struct ggo_help) {
+ .short_help = file_write_args_info_help,
+ .detailed_help = file_write_args_info_detailed_help
+ };
+ file_cmdline_parser_free(&dummy);
}
projects / paraslash.git / blobdiff