Clean-up: open_pipe_cloexec() has useless boilerplate
[lttng-tools.git] / src / common / fd-tracker / utils.c
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1/*
2 * Copyright (C) 2018 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License, version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc., 51
15 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
16 */
17
18#include <unistd.h>
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19#include <stdio.h>
20#include <stdlib.h>
df038819 21#include <common/fd-tracker/utils.h>
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22#include <common/utils.h>
23
24static
25int open_pipe_cloexec(void *data, int *fds)
26{
e51dc192 27 return utils_create_pipe_cloexec(fds);
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28}
29
30static
31int close_pipe(void *data, int *pipe)
32{
33 utils_close_pipe(pipe);
34 pipe[0] = pipe[1] = -1;
35 return 0;
36}
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37
38int fd_tracker_util_close_fd(void *unused, int *fd)
39{
40 return close(*fd);
41}
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42
43int fd_tracker_util_pipe_open_cloexec(struct fd_tracker *tracker,
44 const char *name, int *pipe)
45{
46 int ret;
47 const char *name_prefix;
48 char *names[2];
49
50 name_prefix = name ? name : "Unknown pipe";
51 ret = asprintf(&names[0], "%s (read end)", name_prefix);
52 if (ret < 0) {
53 goto end;
54 }
55 ret = asprintf(&names[1], "%s (write end)", name_prefix);
56 if (ret < 0) {
57 goto end;
58 }
59
60 ret = fd_tracker_open_unsuspendable_fd(tracker, pipe,
61 (const char **) names, 2, open_pipe_cloexec, NULL);
62 free(names[0]);
63 free(names[1]);
64end:
65 return ret;
66}
67
68int fd_tracker_util_pipe_close(struct fd_tracker *tracker, int *pipe)
69{
70 return fd_tracker_close_unsuspendable_fd(tracker,
71 pipe, 2, close_pipe, NULL);
72}
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