2191b67100a4cdb6a3e7ce4af3e8fe8dacb2058e
[babeltrace.git] / src / plugins / ctf / fs-src / file.c
1 /*
2 * Copyright 2016 - Philippe Proulx <pproulx@efficios.com>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 #define BT_COMP_LOG_SELF_COMP (file->self_comp)
24 #define BT_LOG_OUTPUT_LEVEL (file->log_level)
25 #define BT_LOG_TAG "PLUGIN/SRC.CTF.FS/FILE"
26 #include "logging/comp-logging.h"
27
28 #include <stdio.h>
29 #include <sys/types.h>
30 #include <sys/stat.h>
31 #include <unistd.h>
32 #include <glib.h>
33 #include "file.h"
34
35 BT_HIDDEN
36 void ctf_fs_file_destroy(struct ctf_fs_file *file)
37 {
38 if (!file) {
39 return;
40 }
41
42 if (file->fp) {
43 BT_COMP_LOGD("Closing file \"%s\" (%p)",
44 file->path ? file->path->str : NULL, file->fp);
45
46 if (fclose(file->fp)) {
47 BT_COMP_LOGE("Cannot close file \"%s\": %s",
48 file->path ? file->path->str : "NULL",
49 strerror(errno));
50 }
51 }
52
53 if (file->path) {
54 g_string_free(file->path, TRUE);
55 }
56
57 g_free(file);
58 }
59
60 BT_HIDDEN
61 struct ctf_fs_file *ctf_fs_file_create(bt_logging_level log_level,
62 bt_self_component *self_comp)
63 {
64 struct ctf_fs_file *file = g_new0(struct ctf_fs_file, 1);
65
66 if (!file) {
67 goto error;
68 }
69
70 file->log_level = log_level;
71 file->self_comp = self_comp;
72 file->path = g_string_new(NULL);
73 if (!file->path) {
74 goto error;
75 }
76
77 goto end;
78
79 error:
80 ctf_fs_file_destroy(file);
81 file = NULL;
82
83 end:
84 return file;
85 }
86
87 BT_HIDDEN
88 int ctf_fs_file_open(struct ctf_fs_file *file, const char *mode)
89 {
90 int ret = 0;
91 struct stat stat;
92
93 BT_COMP_LOGI("Opening file \"%s\" with mode \"%s\"", file->path->str, mode);
94 file->fp = fopen(file->path->str, mode);
95 if (!file->fp) {
96 BT_COMP_LOGE_APPEND_CAUSE_ERRNO(file->self_comp,
97 "Cannot open file", ": path=%s, mode=%s",
98 file->path->str, mode);
99 goto error;
100 }
101
102 BT_COMP_LOGI("Opened file: %p", file->fp);
103
104 if (fstat(fileno(file->fp), &stat)) {
105 BT_COMP_LOGE_APPEND_CAUSE_ERRNO(file->self_comp,
106 "Cannot get file information",
107 ": path=%s", file->path->str);
108 goto error;
109 }
110
111 file->size = stat.st_size;
112 BT_COMP_LOGI("File is %jd bytes", (intmax_t) file->size);
113 goto end;
114
115 error:
116 ret = -1;
117
118 if (file->fp) {
119 if (fclose(file->fp)) {
120 BT_COMP_LOGE("Cannot close file \"%s\": %s", file->path->str,
121 strerror(errno));
122 }
123 }
124
125 end:
126 return ret;
127 }
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