com_si(): Report also the afs pid.
[paraslash.git] / file_write.c
1 /*
2 * Copyright (C) 2006-2008 Andre Noll <maan@systemlinux.org>
3 *
4 * Licensed under the GPL v2. For licencing details see COPYING.
5 */
6
7 /** \file file_write.c simple output plugin for testing purposes */
8
9 #include <sys/types.h>
10 #include <dirent.h>
11
12 #include "para.h"
13 #include "list.h"
14 #include "sched.h"
15 #include "write.h"
16 #include "string.h"
17 #include "fd.h"
18 #include "file_write.cmdline.h"
19 #include "error.h"
20
21 /** data specific to the file writer */
22 struct private_file_write_data {
23 /** the file descriptor of the output file */
24 int fd;
25 /** non-zero if \a fd was added to the write fd set */
26 int check_fd;
27 };
28
29 static int file_write_open(struct writer_node *wn)
30 {
31 struct private_file_write_data *pfwd = para_calloc(
32 sizeof(struct private_file_write_data));
33 struct file_write_args_info *conf = wn->conf;
34 char *filename;
35 if (conf->filename_given)
36 filename = conf->filename_arg;
37 else {
38 char *tmp = para_tmpname(), *home = para_homedir();
39 filename = make_message("%s/.paraslash/%s", home, tmp);
40 free(home);
41 free(tmp);
42 }
43 wn->private_data = pfwd;
44 pfwd->fd = open(filename, O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR);
45 if (!conf->filename_given)
46 free(filename);
47 if (pfwd->fd >= 0)
48 return 8192;
49 free(pfwd);
50 return -E_FW_OPEN;
51 }
52
53 static int file_write_pre_select(struct sched *s, struct writer_node *wn)
54 {
55 struct private_file_write_data *pfwd = wn->private_data;
56 struct writer_node_group *wng = wn->wng;
57
58 pfwd->check_fd = 0;
59 if (pfwd->fd <= 0)
60 return -E_FW_NO_FILE;
61 if (!*wng->loaded)
62 return 1;
63 para_fd_set(pfwd->fd, &s->wfds, &s->max_fileno);
64 pfwd->check_fd = 1;
65 return 1;
66 }
67
68 static int file_write_post_select(struct sched *s, struct writer_node *wn)
69 {
70 struct private_file_write_data *pfwd = wn->private_data;
71 struct writer_node_group *wng = wn->wng;
72 int ret;
73
74 if (!pfwd->check_fd)
75 return 1;
76 if (*wng->loaded <= wn->written)
77 return 1;
78 if (!FD_ISSET(pfwd->fd, &s->wfds))
79 return 1;
80 // PARA_INFO_LOG("writing %zd\n", *wng->loaded);
81 ret = write(pfwd->fd, wng->buf + wn->written,
82 *wng->loaded - wn->written);
83 if (ret < 0)
84 return -E_FW_WRITE;
85 wn->written += ret;
86 return 1;
87 }
88
89 static void file_write_close(struct writer_node *wn)
90 {
91 struct private_file_write_data *pfwd = wn->private_data;
92 close(pfwd->fd);
93 free(pfwd);
94 }
95
96 __malloc static void *file_write_parse_config(const char *options)
97 {
98 PARA_INFO_LOG("options: %s\n", options);
99 struct file_write_args_info *conf
100 = para_calloc(sizeof(struct file_write_args_info));
101 int ret = file_cmdline_parser_string(options, conf, "file_write");
102 PARA_INFO_LOG("conf->filename_given: %d\n", conf->filename_given);
103 if (!ret)
104 return conf;
105 free(conf);
106 return NULL;
107 }
108
109 /** the init function of the file writer */
110 void file_write_init(struct writer *w)
111 {
112 w->open = file_write_open;
113 w->pre_select = file_write_pre_select;
114 w->post_select = file_write_post_select;
115 w->parse_config = file_write_parse_config;
116 w->close = file_write_close;
117 w->shutdown = NULL; /* nothing to do */
118 }