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gstdio: Handle EINTR in g_fsync()

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Signed-off-by: Philip Withnall <withnall@endlessm.com>
This commit is contained in:
Philip Withnall 2020-05-27 18:53:32 +01:00
parent 84dd89242a
commit 926dfe5925
1 changed files with 12 additions and 3 deletions
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15
glib/gstdio.c
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@ -1660,10 +1660,13 @@ g_freopen (const gchar *filename,
* g_fsync: * g_fsync:
* @fd: a file descriptor * @fd: a file descriptor
* *
* A wrapper for the POSIX fsync() function (_commit() on Windows). * A wrapper for the POSIX `fsync()` function. On Windows, `_commit()` will be
* The fsync() function is used to synchronize a file's in-core * used.
* The `fsync()` function is used to synchronize a file's in-core
* state with that of the disk. * state with that of the disk.
* *
* This wrapper will handle retrying on `EINTR`.
*
* See the C library manual for more details about fsync(). * See the C library manual for more details about fsync().
* *
* Returns: 0 on success, or -1 if an error occurred. * Returns: 0 on success, or -1 if an error occurred.
@ -1676,8 +1679,14 @@ g_fsync (gint fd)
{ {
#ifdef G_OS_WIN32 #ifdef G_OS_WIN32
return _commit (fd); return _commit (fd);
#elif defined(HAVE_FSYNC)
int retval;
do
retval = fsync (fd);
while (G_UNLIKELY (retval < 0 && errno == EINTR));
return retval;
#else #else
return fsync (fd); return 0;
#endif #endif
} }