/src/glib/glib/glib-unix.h

Source
/* glib-unix.h - Unix specific integration
 * Copyright (C) 2011 Red Hat, Inc.
 * Copyright 2023 Collabora Ltd.
 *
 * SPDX-License-Identifier: LGPL-2.1-or-later
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __G_UNIX_H__
#define __G_UNIX_H__

/* We need to include the UNIX headers needed to use the APIs below,
 * but we also take this opportunity to include a wide selection of
 * other UNIX headers.  If one of the headers below is broken on some
 * system, work around it here (or better, fix the system or tell
 * people to use a better one).
 */
#include <unistd.h>
#include <errno.h>
#include <sys/wait.h>
#include <stdlib.h>
#include <fcntl.h>

#include <glib.h>
#include <glib/gstdio.h>

#ifndef G_OS_UNIX
#error "This header may only be used on UNIX"
#endif

G_BEGIN_DECLS

/**
 * G_UNIX_ERROR:
 *
 * Error domain for API in the g_unix_ namespace. Note that there is no
 * exported enumeration mapping %errno. Instead, all functions ensure that
 * %errno is relevant. The code for all %G_UNIX_ERROR is always 0, and the
 * error message is always generated via g_strerror().
 *
 * It is expected that most code will not look at %errno from these APIs.
 * Important cases where one would want to differentiate between errors are
 * already covered by existing cross-platform GLib API, such as e.g. #GFile
 * wrapping `ENOENT`. However, it is provided for completeness, at least.
 */
#define G_UNIX_ERROR (g_unix_error_quark())

GLIB_AVAILABLE_IN_2_30
GQuark g_unix_error_quark (void);

GLIB_AVAILABLE_IN_2_30
gboolean g_unix_open_pipe (gint    *fds,
                           gint     flags,
                           GError **error);

GLIB_AVAILABLE_IN_2_30
gboolean g_unix_set_fd_nonblocking (gint       fd,
                                    gboolean   nonblock,
                                    GError   **error);

GLIB_AVAILABLE_IN_2_30
GSource *g_unix_signal_source_new  (gint signum);

GLIB_AVAILABLE_IN_2_30
guint    g_unix_signal_add_full    (gint           priority,
                                    gint           signum,
                                    GSourceFunc    handler,
                                    gpointer       user_data,
                                    GDestroyNotify notify);

GLIB_AVAILABLE_IN_2_30
guint    g_unix_signal_add         (gint        signum,
                                    GSourceFunc handler,
                                    gpointer    user_data);

/**
 * GUnixFDSourceFunc:
 * @fd: the fd that triggered the event
 * @condition: the IO conditions reported on @fd
 * @user_data: user data passed to g_unix_fd_add()
 *
 * The type of functions to be called when a UNIX fd watch source
 * triggers.
 *
 * Returns: %FALSE if the source should be removed
 **/
typedef gboolean (*GUnixFDSourceFunc) (gint         fd,
                                       GIOCondition condition,
                                       gpointer     user_data);

GLIB_AVAILABLE_IN_2_36
GSource *g_unix_fd_source_new      (gint         fd,
                                    GIOCondition condition);

GLIB_AVAILABLE_IN_2_36
guint    g_unix_fd_add_full        (gint              priority,
                                    gint              fd,
                                    GIOCondition      condition,
                                    GUnixFDSourceFunc function,
                                    gpointer          user_data,
                                    GDestroyNotify    notify);

GLIB_AVAILABLE_IN_2_36
guint    g_unix_fd_add             (gint              fd,
                                    GIOCondition      condition,
                                    GUnixFDSourceFunc function,
                                    gpointer          user_data);

GLIB_AVAILABLE_IN_2_64
struct passwd *g_unix_get_passwd_entry (const gchar  *user_name,
                                        GError      **error);

/**
 * GUnixPipe:
 * @fds: A pair of file descriptors, each negative if closed or not yet opened.
 *  The file descriptor with index %G_UNIX_PIPE_END_READ is readable.
 *  The file descriptor with index %G_UNIX_PIPE_END_WRITE is writable.
 *
 * A Unix pipe. The advantage of this type over `int[2]` is that it can
 * be closed automatically when it goes out of scope, using `g_auto(GUnixPipe)`,
 * on compilers that support that feature.
 *
 * Since: 2.80
 */
GLIB_AVAILABLE_TYPE_IN_2_80
typedef struct {
  int fds[2];
} GUnixPipe;

/**
 * GUnixPipeEnd:
 * @G_UNIX_PIPE_END_READ: The readable file descriptor 0
 * @G_UNIX_PIPE_END_WRITE: The writable file descriptor 1
 *
 * Mnemonic constants for the ends of a Unix pipe.
 *
 * Since: 2.80
 */
GLIB_AVAILABLE_TYPE_IN_2_80
typedef enum
{
  G_UNIX_PIPE_END_READ = 0,
  G_UNIX_PIPE_END_WRITE = 1
} GUnixPipeEnd;

/**
 * G_UNIX_PIPE_INIT:
 *
 * Initializer for a #GUnixPipe that has not yet been opened.
 * Both of its file descriptors are initialized to `-1` (invalid),
 * the same as if they had been closed.
 *
 * Since: 2.80
 */
#define G_UNIX_PIPE_INIT { { -1, -1 } } GLIB_AVAILABLE_MACRO_IN_2_80

/* Suppress "Not available before" warnings when declaring the
 * implementations */
G_GNUC_BEGIN_IGNORE_DEPRECATIONS

/**
 * g_unix_pipe_open:
 * @self: A pair of file descriptors
 * @flags: Flags to pass to g_unix_open_pipe(), typically `O_CLOEXEC`
 * @error: Used to report an error on failure
 *
 * Open a pipe. This is the same as g_unix_open_pipe(), but uses the
 * #GUnixPipe data structure.
 *
 * Returns: %TRUE on success
 *
 * Since: 2.80
 */
GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
static inline gboolean g_unix_pipe_open (GUnixPipe  *self,
                                         int         flags,
                                         GError    **error);

GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
static inline gboolean
g_unix_pipe_open (GUnixPipe *self,
                  int flags,
                  GError **error)
{
  return g_unix_open_pipe (self->fds, flags, error);
}

/**
 * g_unix_pipe_get:
 * @self: A pair of file descriptors
 * @end: One of the ends of the pipe
 *
 * Return one of the ends of the pipe. It remains owned by @self.
 *
 * This function is async-signal safe (see [`signal(7)`](man:signal(7)) and
 * [`signal-safety(7)`](man:signal-safety(7))), making it safe to call from a
 * signal handler or a #GSpawnChildSetupFunc.
 *
 * This function preserves the value of `errno`.
 *
 * Returns: a non-negative file descriptor owned by @self, which must not
 *  be closed by the caller, or a negative number if the corresponding
 *  end of the pipe was already closed or stolen
 *
 * Since: 2.80
 */
GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
static inline int g_unix_pipe_get (GUnixPipe    *self,
                                   GUnixPipeEnd  end);

GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
static inline int
g_unix_pipe_get (GUnixPipe *self,
                 GUnixPipeEnd end)
{
  return self->fds[end];
}

/**
 * g_unix_pipe_steal:
 * @self: A pair of file descriptors
 * @end: One of the ends of the pipe
 *
 * Return one of the ends of the pipe. It becomes owned by the caller,
 * and the file descriptor in the data structure is set to `-1`,
 * similar to g_steal_fd().
 *
 * This function is async-signal safe (see [`signal(7)`](man:signal(7)) and
 * [`signal-safety(7)`](man:signal-safety(7))), making it safe to call from a
 * signal handler or a #GSpawnChildSetupFunc.
 *
 * This function preserves the value of `errno`.
 *
 * Returns: a non-negative file descriptor, which becomes owned by the
 *  caller and must be closed by the caller if required, or a negative
 *  number if the corresponding end of the pipe was already closed or stolen
 *
 * Since: 2.80
 */
GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
static inline int g_unix_pipe_steal (GUnixPipe    *self,
                                     GUnixPipeEnd  end);

GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
static inline int
g_unix_pipe_steal (GUnixPipe *self,
                   GUnixPipeEnd end)
{
  return g_steal_fd (&self->fds[end]);
}

/**
 * g_unix_pipe_close:
 * @self: A pair of file descriptors
 * @end: One of the ends of the pipe
 * @error: Optionally used to report an error on failure
 *
 * Close one of the ends of the pipe and set the relevant member of @fds
 * to `-1` before returning, equivalent to g_clear_fd().
 *
 * Like g_close(), if closing the file descriptor fails, the error is
 * stored in both %errno and @error. If this function succeeds,
 * %errno is undefined.
 *
 * This function is async-signal safe if @error is %NULL and the relevant
 * member of @fds is either negative or a valid open file descriptor.
 * This makes it safe to call from a signal handler or a #GSpawnChildSetupFunc
 * under those conditions.
 * See [`signal(7)`](man:signal(7)) and
 * [`signal-safety(7)`](man:signal-safety(7)) for more details.
 *
 * To close both file descriptors and ignore any errors, use
 * g_unix_pipe_clear() instead.
 *
 * Returns: %TRUE on success
 *
 * Since: 2.80
 */
GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
static inline gboolean g_unix_pipe_close (GUnixPipe     *self,
                                          GUnixPipeEnd   end,
                                          GError       **error);

GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
static inline gboolean
g_unix_pipe_close (GUnixPipe *self,
                   GUnixPipeEnd end,
                   GError **error)
{
  return g_clear_fd (&self->fds[end], error);
}

/**
 * g_unix_pipe_clear:
 * @self: a #GUnixPipe
 *
 * Close both ends of the pipe, unless they have already been closed or
 * stolen. Any errors are ignored: use g_unix_pipe_close() or g_clear_fd()
 * if error-handling is required.
 *
 * This function is async-signal safe if @error is %NULL and each member
 * of @fds are either negative or a valid open file descriptor.
 * As a result, it is safe to call this function or use `g_auto(GUnixPipe)`
 * (on compilers that support it) in a signal handler or a
 * #GSpawnChildSetupFunc, as long as those conditions are ensured to be true.
 * See [`signal(7)`](man:signal(7)) and
 * [`signal-safety(7)`](man:signal-safety(7)) for more details.
 *
 * This function preserves the value of `errno`.
 *
 * Since: 2.80
 */
GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
static inline void g_unix_pipe_clear (GUnixPipe *self);

GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
static inline void
g_unix_pipe_clear (GUnixPipe *self)
{
  /* Don't overwrite thread-local errno if closing the fd fails */
  int errsv = errno;

  if (!g_unix_pipe_close (self, G_UNIX_PIPE_END_READ, NULL))
    {
      /* ignore */
    }

  if (!g_unix_pipe_close (self, G_UNIX_PIPE_END_WRITE, NULL))
    {
      /* ignore */
    }

  errno = errsv;
}

G_DEFINE_AUTO_CLEANUP_CLEAR_FUNC (GUnixPipe, g_unix_pipe_clear)

GLIB_AVAILABLE_IN_2_80
int g_closefrom (int lowfd);

GLIB_AVAILABLE_IN_2_80
int g_fdwalk_set_cloexec (int lowfd);

GLIB_AVAILABLE_IN_2_88
char * g_unix_fd_query_path (int      fd,
                             GError **error);

G_GNUC_END_IGNORE_DEPRECATIONS

G_END_DECLS

#endif  /* __G_UNIX_H__ */

Coverage Report

Created: 2026-02-14 07:05

Line	Count	Source
1		/* glib-unix.h - Unix specific integration
2		* Copyright (C) 2011 Red Hat, Inc.
3		* Copyright 2023 Collabora Ltd.
4		*
5		* SPDX-License-Identifier: LGPL-2.1-or-later
6		*
7		* This library is free software; you can redistribute it and/or
8		* modify it under the terms of the GNU Lesser General Public
9		* License as published by the Free Software Foundation; either
10		* version 2.1 of the License, or (at your option) any later version.
11		*
12		* This library is distributed in the hope that it will be useful,
13		* but WITHOUT ANY WARRANTY; without even the implied warranty of
14		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15		* Lesser General Public License for more details.
16		*
17		* You should have received a copy of the GNU Lesser General Public License
18		* along with this library; if not, see <http://www.gnu.org/licenses/>.
19		*/
20
21		#ifndef __G_UNIX_H__
22		#define __G_UNIX_H__
23
24		/* We need to include the UNIX headers needed to use the APIs below,
25		* but we also take this opportunity to include a wide selection of
26		* other UNIX headers. If one of the headers below is broken on some
27		* system, work around it here (or better, fix the system or tell
28		* people to use a better one).
29		*/
30		#include <unistd.h>
31		#include <errno.h>
32		#include <sys/wait.h>
33		#include <stdlib.h>
34		#include <fcntl.h>
35
36		#include <glib.h>
37		#include <glib/gstdio.h>
38
39		#ifndef G_OS_UNIX
40		#error "This header may only be used on UNIX"
41		#endif
42
43		G_BEGIN_DECLS
44
45		/**
46		* G_UNIX_ERROR:
47		*
48		* Error domain for API in the g_unix_ namespace. Note that there is no
49		* exported enumeration mapping %errno. Instead, all functions ensure that
50		* %errno is relevant. The code for all %G_UNIX_ERROR is always 0, and the
51		* error message is always generated via g_strerror().
52		*
53		* It is expected that most code will not look at %errno from these APIs.
54		* Important cases where one would want to differentiate between errors are
55		* already covered by existing cross-platform GLib API, such as e.g. #GFile
56		* wrapping `ENOENT`. However, it is provided for completeness, at least.
57		*/
58	0	#define G_UNIX_ERROR (g_unix_error_quark())
59
60		GLIB_AVAILABLE_IN_2_30
61		GQuark g_unix_error_quark (void);
62
63		GLIB_AVAILABLE_IN_2_30
64		gboolean g_unix_open_pipe (gint *fds,
65		gint flags,
66		GError **error);
67
68		GLIB_AVAILABLE_IN_2_30
69		gboolean g_unix_set_fd_nonblocking (gint fd,
70		gboolean nonblock,
71		GError **error);
72
73		GLIB_AVAILABLE_IN_2_30
74		GSource *g_unix_signal_source_new (gint signum);
75
76		GLIB_AVAILABLE_IN_2_30
77		guint g_unix_signal_add_full (gint priority,
78		gint signum,
79		GSourceFunc handler,
80		gpointer user_data,
81		GDestroyNotify notify);
82
83		GLIB_AVAILABLE_IN_2_30
84		guint g_unix_signal_add (gint signum,
85		GSourceFunc handler,
86		gpointer user_data);
87
88		/**
89		* GUnixFDSourceFunc:
90		* @fd: the fd that triggered the event
91		* @condition: the IO conditions reported on @fd
92		* @user_data: user data passed to g_unix_fd_add()
93		*
94		* The type of functions to be called when a UNIX fd watch source
95		* triggers.
96		*
97		* Returns: %FALSE if the source should be removed
98		**/
99		typedef gboolean (*GUnixFDSourceFunc) (gint fd,
100		GIOCondition condition,
101		gpointer user_data);
102
103		GLIB_AVAILABLE_IN_2_36
104		GSource *g_unix_fd_source_new (gint fd,
105		GIOCondition condition);
106
107		GLIB_AVAILABLE_IN_2_36
108		guint g_unix_fd_add_full (gint priority,
109		gint fd,
110		GIOCondition condition,
111		GUnixFDSourceFunc function,
112		gpointer user_data,
113		GDestroyNotify notify);
114
115		GLIB_AVAILABLE_IN_2_36
116		guint g_unix_fd_add (gint fd,
117		GIOCondition condition,
118		GUnixFDSourceFunc function,
119		gpointer user_data);
120
121		GLIB_AVAILABLE_IN_2_64
122		struct passwd g_unix_get_passwd_entry (const gchar user_name,
123		GError **error);
124
125		/**
126		* GUnixPipe:
127		* @fds: A pair of file descriptors, each negative if closed or not yet opened.
128		* The file descriptor with index %G_UNIX_PIPE_END_READ is readable.
129		* The file descriptor with index %G_UNIX_PIPE_END_WRITE is writable.
130		*
131		* A Unix pipe. The advantage of this type over `int[2]` is that it can
132		* be closed automatically when it goes out of scope, using `g_auto(GUnixPipe)`,
133		* on compilers that support that feature.
134		*
135		* Since: 2.80
136		*/
137		GLIB_AVAILABLE_TYPE_IN_2_80
138		typedef struct {
139		int fds[2];
140		} GUnixPipe;
141
142		/**
143		* GUnixPipeEnd:
144		* @G_UNIX_PIPE_END_READ: The readable file descriptor 0
145		* @G_UNIX_PIPE_END_WRITE: The writable file descriptor 1
146		*
147		* Mnemonic constants for the ends of a Unix pipe.
148		*
149		* Since: 2.80
150		*/
151		GLIB_AVAILABLE_TYPE_IN_2_80
152		typedef enum
153		{
154		G_UNIX_PIPE_END_READ = 0,
155		G_UNIX_PIPE_END_WRITE = 1
156		} GUnixPipeEnd;
157
158		/**
159		* G_UNIX_PIPE_INIT:
160		*
161		* Initializer for a #GUnixPipe that has not yet been opened.
162		* Both of its file descriptors are initialized to `-1` (invalid),
163		* the same as if they had been closed.
164		*
165		* Since: 2.80
166		*/
167	0	#define G_UNIX_PIPE_INIT { { -1, -1 } } GLIB_AVAILABLE_MACRO_IN_2_80
168
169		/* Suppress "Not available before" warnings when declaring the
170		* implementations */
171		G_GNUC_BEGIN_IGNORE_DEPRECATIONS
172
173		/**
174		* g_unix_pipe_open:
175		* @self: A pair of file descriptors
176		* @flags: Flags to pass to g_unix_open_pipe(), typically `O_CLOEXEC`
177		* @error: Used to report an error on failure
178		*
179		* Open a pipe. This is the same as g_unix_open_pipe(), but uses the
180		* #GUnixPipe data structure.
181		*
182		* Returns: %TRUE on success
183		*
184		* Since: 2.80
185		*/
186		GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
187		static inline gboolean g_unix_pipe_open (GUnixPipe *self,
188		int flags,
189		GError **error);
190
191		GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
192		static inline gboolean
193		g_unix_pipe_open (GUnixPipe *self,
194		int flags,
195		GError **error)
196	0	{
197	0	return g_unix_open_pipe (self->fds, flags, error);
198	0	} Unexecuted instantiation: gmain.c:g_unix_pipe_open Unexecuted instantiation: gwakeup.c:g_unix_pipe_open Unexecuted instantiation: glib-unix.c:g_unix_pipe_open Unexecuted instantiation: gspawn-posix.c:g_unix_pipe_open
199
200		/**
201		* g_unix_pipe_get:
202		* @self: A pair of file descriptors
203		* @end: One of the ends of the pipe
204		*
205		* Return one of the ends of the pipe. It remains owned by @self.
206		*
207		* This function is async-signal safe (see [`signal(7)`](man:signal(7)) and
208		* [`signal-safety(7)`](man:signal-safety(7))), making it safe to call from a
209		* signal handler or a #GSpawnChildSetupFunc.
210		*
211		* This function preserves the value of `errno`.
212		*
213		* Returns: a non-negative file descriptor owned by @self, which must not
214		* be closed by the caller, or a negative number if the corresponding
215		* end of the pipe was already closed or stolen
216		*
217		* Since: 2.80
218		*/
219		GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
220		static inline int g_unix_pipe_get (GUnixPipe *self,
221		GUnixPipeEnd end);
222
223		GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
224		static inline int
225		g_unix_pipe_get (GUnixPipe *self,
226		GUnixPipeEnd end)
227	0	{
228	0	return self->fds[end];
229	0	} Unexecuted instantiation: gmain.c:g_unix_pipe_get Unexecuted instantiation: gwakeup.c:g_unix_pipe_get Unexecuted instantiation: glib-unix.c:g_unix_pipe_get Unexecuted instantiation: gspawn-posix.c:g_unix_pipe_get
230
231		/**
232		* g_unix_pipe_steal:
233		* @self: A pair of file descriptors
234		* @end: One of the ends of the pipe
235		*
236		* Return one of the ends of the pipe. It becomes owned by the caller,
237		* and the file descriptor in the data structure is set to `-1`,
238		* similar to g_steal_fd().
239		*
240		* This function is async-signal safe (see [`signal(7)`](man:signal(7)) and
241		* [`signal-safety(7)`](man:signal-safety(7))), making it safe to call from a
242		* signal handler or a #GSpawnChildSetupFunc.
243		*
244		* This function preserves the value of `errno`.
245		*
246		* Returns: a non-negative file descriptor, which becomes owned by the
247		* caller and must be closed by the caller if required, or a negative
248		* number if the corresponding end of the pipe was already closed or stolen
249		*
250		* Since: 2.80
251		*/
252		GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
253		static inline int g_unix_pipe_steal (GUnixPipe *self,
254		GUnixPipeEnd end);
255
256		GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
257		static inline int
258		g_unix_pipe_steal (GUnixPipe *self,
259		GUnixPipeEnd end)
260	0	{
261	0	return g_steal_fd (&self->fds[end]);
262	0	} Unexecuted instantiation: gmain.c:g_unix_pipe_steal Unexecuted instantiation: gwakeup.c:g_unix_pipe_steal Unexecuted instantiation: glib-unix.c:g_unix_pipe_steal Unexecuted instantiation: gspawn-posix.c:g_unix_pipe_steal
263
264		/**
265		* g_unix_pipe_close:
266		* @self: A pair of file descriptors
267		* @end: One of the ends of the pipe
268		* @error: Optionally used to report an error on failure
269		*
270		* Close one of the ends of the pipe and set the relevant member of @fds
271		* to `-1` before returning, equivalent to g_clear_fd().
272		*
273		* Like g_close(), if closing the file descriptor fails, the error is
274		* stored in both %errno and @error. If this function succeeds,
275		* %errno is undefined.
276		*
277		* This function is async-signal safe if @error is %NULL and the relevant
278		* member of @fds is either negative or a valid open file descriptor.
279		* This makes it safe to call from a signal handler or a #GSpawnChildSetupFunc
280		* under those conditions.
281		* See [`signal(7)`](man:signal(7)) and
282		* [`signal-safety(7)`](man:signal-safety(7)) for more details.
283		*
284		* To close both file descriptors and ignore any errors, use
285		* g_unix_pipe_clear() instead.
286		*
287		* Returns: %TRUE on success
288		*
289		* Since: 2.80
290		*/
291		GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
292		static inline gboolean g_unix_pipe_close (GUnixPipe *self,
293		GUnixPipeEnd end,
294		GError **error);
295
296		GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
297		static inline gboolean
298		g_unix_pipe_close (GUnixPipe *self,
299		GUnixPipeEnd end,
300		GError **error)
301	0	{
302	0	return g_clear_fd (&self->fds[end], error);
303	0	} Unexecuted instantiation: gmain.c:g_unix_pipe_close Unexecuted instantiation: gwakeup.c:g_unix_pipe_close Unexecuted instantiation: glib-unix.c:g_unix_pipe_close Unexecuted instantiation: gspawn-posix.c:g_unix_pipe_close
304
305		/**
306		* g_unix_pipe_clear:
307		* @self: a #GUnixPipe
308		*
309		* Close both ends of the pipe, unless they have already been closed or
310		* stolen. Any errors are ignored: use g_unix_pipe_close() or g_clear_fd()
311		* if error-handling is required.
312		*
313		* This function is async-signal safe if @error is %NULL and each member
314		* of @fds are either negative or a valid open file descriptor.
315		* As a result, it is safe to call this function or use `g_auto(GUnixPipe)`
316		* (on compilers that support it) in a signal handler or a
317		* #GSpawnChildSetupFunc, as long as those conditions are ensured to be true.
318		* See [`signal(7)`](man:signal(7)) and
319		* [`signal-safety(7)`](man:signal-safety(7)) for more details.
320		*
321		* This function preserves the value of `errno`.
322		*
323		* Since: 2.80
324		*/
325		GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
326		static inline void g_unix_pipe_clear (GUnixPipe *self);
327
328		GLIB_AVAILABLE_STATIC_INLINE_IN_2_80
329		static inline void
330		g_unix_pipe_clear (GUnixPipe *self)
331	0	{
332		/* Don't overwrite thread-local errno if closing the fd fails */
333	0	int errsv = errno;
334
335	0	if (!g_unix_pipe_close (self, G_UNIX_PIPE_END_READ, NULL))
336	0	{
337		/* ignore */
338	0	}
339
340	0	if (!g_unix_pipe_close (self, G_UNIX_PIPE_END_WRITE, NULL))
341	0	{
342		/* ignore */
343	0	}
344
345		errno = errsv;
346	0	} Unexecuted instantiation: gmain.c:g_unix_pipe_clear Unexecuted instantiation: gwakeup.c:g_unix_pipe_clear Unexecuted instantiation: glib-unix.c:g_unix_pipe_clear Unexecuted instantiation: gspawn-posix.c:g_unix_pipe_clear
347
348		G_DEFINE_AUTO_CLEANUP_CLEAR_FUNC (GUnixPipe, g_unix_pipe_clear)
349
350		GLIB_AVAILABLE_IN_2_80
351		int g_closefrom (int lowfd);
352
353		GLIB_AVAILABLE_IN_2_80
354		int g_fdwalk_set_cloexec (int lowfd);
355
356		GLIB_AVAILABLE_IN_2_88
357		char * g_unix_fd_query_path (int fd,
358		GError **error);
359
360		G_GNUC_END_IGNORE_DEPRECATIONS
361
362		G_END_DECLS
363
364		#endif /* __G_UNIX_H__ */