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gfileutils: Split out write_to_file() helper function

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This introduces no functional changes.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Helps: #1302
This commit is contained in:
Philip Withnall 2020-05-27 12:03:59 +01:00
parent 554107c23c
commit 00c17de72e
1 changed files with 53 additions and 38 deletions
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85
glib/gfileutils.c
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@ -1050,32 +1050,15 @@ rename_file (const char *old_name,
return TRUE;
}
static gchar *
write_to_temp_file (const gchar *contents,
/* closes @fd once it’s finished (on success or error) */
static gboolean
write_to_file (const gchar *contents,
gssize length,
int fd,
const gchar *dest_file,
const gchar *test_file,
GError **err)
{
gchar *tmp_name;
gchar *retval;
gint fd;
retval = NULL;
tmp_name = g_strdup_printf ("%s.XXXXXX", dest_file);
errno = 0;
fd = g_mkstemp_full (tmp_name, O_RDWR | O_BINARY, 0666);
if (fd == -1)
{
int saved_errno = errno;
set_file_error (err,
tmp_name, _("Failed to create file “%s”: %s"),
saved_errno);
goto out;
}
#ifdef HAVE_FALLOCATE
if (length > 0)
{
@ -1098,12 +1081,11 @@ write_to_temp_file (const gchar *contents,
continue;
set_file_error (err,
tmp_name, _("Failed to write file “%s”: write() failed: %s"),
dest_file, _("Failed to write file “%s”: write() failed: %s"),
saved_errno);
close (fd);
g_unlink (tmp_name);
goto out;
return FALSE;
}
g_assert (s <= length);
@ -1141,12 +1123,11 @@ write_to_temp_file (const gchar *contents,
{
int saved_errno = errno;
set_file_error (err,
tmp_name, _("Failed to write file “%s”: fsync() failed: %s"),
dest_file, _("Failed to write file “%s”: fsync() failed: %s"),
saved_errno);
close (fd);
g_unlink (tmp_name);
goto out;
return FALSE;
}
}
#endif
@ -1157,18 +1138,52 @@ write_to_temp_file (const gchar *contents,
errno = 0;
if (!g_close (fd, err))
{
g_unlink (tmp_name);
return FALSE;
goto out;
return TRUE;
}
static inline int
steal_fd (int *fd_ptr)
{
int fd = *fd_ptr;
*fd_ptr = -1;
return fd;
}
static gchar *
write_to_temp_file (const gchar *contents,
gssize length,
const gchar *dest_file,
GError **err)
{
gchar *tmp_name = NULL;
int fd;
tmp_name = g_strdup_printf ("%s.XXXXXX", dest_file);
errno = 0;
fd = g_mkstemp_full (tmp_name, O_RDWR | O_BINARY, 0666);
if (fd == -1)
{
int saved_errno = errno;
set_file_error (err,
tmp_name, _("Failed to create file “%s”: %s"),
saved_errno);
g_free (tmp_name);
return NULL;
}
retval = g_strdup (tmp_name);
out:
if (!write_to_file (contents, length, steal_fd (&fd), tmp_name, dest_file, err))
{
g_unlink (tmp_name);
g_free (tmp_name);
return retval;
return NULL;
}
return g_steal_pointer (&tmp_name);
}
/**