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daemon: Work around udevsettle issue (RHBZ#548121).

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This commit is contained in:
Richard Jones
2009-12-18 19:20:37 +00:00
parent b3c4ddc863
commit 5c6147ecc7
1 changed files with 9 additions and 21 deletions
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30
daemon/guestfsd.c
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@@ -1038,31 +1038,19 @@ device_name_translation (char *device, const char *func)
* involved. eg. You can create or remove some device, but the /dev
* device node won't appear until some time later. This means that
* you get an error if you run one command followed by another.
*
* Use 'udevadm settle' after certain commands, but don't be too
* fussed if it fails.
*
* 'udevsettle' was the old name for this command (RHEL 5). This was
* deprecated in favour of 'udevadm settle'. The old 'udevsettle'
* command was left as a symlink. Then in Fedora 13 the old symlink
* remained but it stopped working (RHBZ#548121), so we have to be
* careful not to assume that we can use 'udevsettle' if it exists.
*/
void
udev_settle (void)
{
static int which_prog = 0;
if (which_prog == 0) {
if (access ("/sbin/udevsettle", X_OK) == 0)
which_prog = 2;
else if (access ("/sbin/udevadm", X_OK) == 0)
which_prog = 1;
else
which_prog = 3;
}
switch (which_prog) {
case 1:
command (NULL, NULL, "/sbin/udevadm", "settle", NULL);
break;
case 2:
command (NULL, NULL, "/sbin/udevsettle", NULL);
break;
default:
;
}
(void) command (NULL, NULL, "/sbin/udevadm", "settle", NULL);
(void) command (NULL, NULL, "/sbin/udevsettle", NULL);
}