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udevadm: settle - add --exit-if-exists=<file>

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This commit is contained in:
Kay Sievers 2009-05-29 14:05:39 +02:00
parent e91ac78ffc
commit 97f48a8c67
2 changed files with 24 additions and 5 deletions
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23
udev/udevadm-settle.c
View file

@ -54,6 +54,7 @@ int udevadm_settle(struct udev *udev, int argc, char *argv[])
{ "seq-start", required_argument, NULL, 's' },
{ "seq-end", required_argument, NULL, 'e' },
{ "timeout", required_argument, NULL, 't' },
{ "exit-if-exists", required_argument, NULL, 'E' },
{ "quiet", no_argument, NULL, 'q' },
{ "help", no_argument, NULL, 'h' },
{}
@ -61,6 +62,7 @@ int udevadm_settle(struct udev *udev, int argc, char *argv[])
unsigned long long start = 0;
unsigned long long end = 0;
int quiet = 0;
const char *exists = NULL;
int timeout = DEFAULT_TIMEOUT;
struct sigaction act;
struct udev_queue *udev_queue = NULL;
@ -80,7 +82,7 @@ int udevadm_settle(struct udev *udev, int argc, char *argv[])
int option;
int seconds;
option = getopt_long(argc, argv, "s:e:t:qh", options, NULL);
option = getopt_long(argc, argv, "s:e:t:E:qh", options, NULL);
if (option == -1)
break;
@ -102,12 +104,16 @@ int udevadm_settle(struct udev *udev, int argc, char *argv[])
case 'q':
quiet = 1;
break;
case 'E':
exists = optarg;
break;
case 'h':
printf("Usage: udevadm settle OPTIONS\n"
" --timeout=<seconds> maximum time to wait for events\n"
" --seq-start=<seqnum> first seqnum to wait for\n"
" --seq-end=<seqnum> last seqnum to wait for\n"
" --quiet do not print list after timeout\n"
" --timeout=<seconds> maximum time to wait for events\n"
" --seq-start=<seqnum> first seqnum to wait for\n"
" --seq-end=<seqnum> last seqnum to wait for\n"
" --exit-if-exists=<file> stop waiting if file exists\n"
" --quiet do not print list after timeout\n"
" --help\n\n");
exit(0);
}
@ -173,6 +179,13 @@ int udevadm_settle(struct udev *udev, int argc, char *argv[])
}
while (1) {
struct stat statbuf;
if (exists != NULL && stat(exists, &statbuf) == 0) {
rc = 0;
break;
}
if (start > 0) {
/* if asked for, wait for a specific sequence of events */
if (udev_queue_get_seqnum_sequence_is_finished(udev_queue, start, end) == 1) {

6
udev/udevadm.xml
View file

@ -236,6 +236,12 @@
<para>Wait only for events before the given sequence number.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>--exit-if-exists=<replaceable>file</replaceable></option></term>
<listitem>
<para>Stop waiting if file exists.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>--quiet</option></term>
<listitem>