sysroot: Update some code to use fstatat_allow_noent API

It's much easier to read and use correctly.  Making this change
since I saw an unprefixed error in an issue.

Closes: #1757
Approved by: jlebon
This commit is contained in:
Colin Walters 2018-10-17 16:06:50 +00:00 committed by Atomic Bot
parent e242033fe7
commit 5183c8f35e

View File

@ -376,12 +376,11 @@ _ostree_sysroot_read_current_subbootversion (OstreeSysroot *self,
g_autofree char *ostree_bootdir_name = g_strdup_printf ("ostree/boot.%d", bootversion);
struct stat stbuf;
if (fstatat (self->sysroot_fd, ostree_bootdir_name, &stbuf, AT_SYMLINK_NOFOLLOW) != 0)
if (!glnx_fstatat_allow_noent (self->sysroot_fd, ostree_bootdir_name, &stbuf, AT_SYMLINK_NOFOLLOW, error))
return FALSE;
if (errno == ENOENT)
{
if (errno == ENOENT)
*out_subbootversion = 0;
else
return glnx_throw_errno (error);
*out_subbootversion = 0;
}
else
{
@ -499,10 +498,10 @@ read_current_bootversion (OstreeSysroot *self,
int ret_bootversion;
struct stat stbuf;
if (fstatat (self->sysroot_fd, "boot/loader", &stbuf, AT_SYMLINK_NOFOLLOW) != 0)
if (!glnx_fstatat_allow_noent (self->sysroot_fd, "boot/loader", &stbuf, AT_SYMLINK_NOFOLLOW, error))
return FALSE;
if (errno == ENOENT)
{
if (errno != ENOENT)
return glnx_throw_errno (error);
ret_bootversion = 0;
}
else
@ -976,11 +975,12 @@ ostree_sysroot_load_if_changed (OstreeSysroot *self,
/* Otherwise - check for /sysroot which should only exist in a deployment,
* not in ${sysroot} (a metavariable for the real physical root).
*/
else if (fstatat (self->sysroot_fd, "sysroot", &stbuf, 0) < 0)
else
{
if (errno != ENOENT)
return glnx_throw_errno_prefix (error, "fstatat");
self->is_physical = TRUE;
if (!glnx_fstatat_allow_noent (self->sysroot_fd, "sysroot", &stbuf, 0, error))
return FALSE;
if (errno == ENOENT)
self->is_physical = TRUE;
}
/* Otherwise, the default is FALSE */
}