Add the ewaitfile function so init scripts can wait until sockts are created, Gentoo #175783.

This commit is contained in:
Roy Marples 2008-06-03 11:57:15 +00:00
parent f2ea7ca514
commit 587051ec67
3 changed files with 57 additions and 7 deletions

View File

@ -22,7 +22,7 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.Dd Mar 19, 2008
.Dd Jun 03, 2008
.Dt RUNSCRIPT 8 SMM
.Os OpenRC
.Sh NAME
@ -173,8 +173,9 @@ If
does not equal 0 then output the string using
.Ic eerror
and !! in square brackets
at the end of the line. Otherwise output ok in square brackets at the end of
the line. The value of
at the end of the line.
Otherwise output ok in square brackets at the end of the line.
The value of
.Ar retval
is returned.
.It Ic ewend Ar retval Op Ar string
@ -193,6 +194,14 @@ output when the environment variable
.Va EINFO_VERBOSE
is true.
.Bl -tag -width indent
.It Ic ewaitfile Ar timeout Ar file1 Ar file2 ...
Wait for
.Ar timeout
seconds until all files exist.
Returns 0 if all files exist, otherwise non zero.
If
.Ar timeout
is less then 1 then we wait indefinitely.
.It Ic is_newer_than Ar file1 Ar file2 ...
If
.Ar file1

View File

@ -13,7 +13,7 @@ LINKDIR= ${PREFIX}/${LIBNAME}/${PROG}
BINLINKS= rc-status
SBINLINKS= rc-service rc-update runscript start-stop-daemon
RC_BINLINKS= einfon einfo ewarnn ewarn eerrorn eerror ebegin eend ewend \
eindent eoutdent esyslog eval_ecolors \
eindent eoutdent esyslog eval_ecolors ewaitfile \
veinfo vewarn vebegin veend vewend veindent veoutdent \
service_starting service_started \
service_stopping service_stopped \

View File

@ -51,6 +51,10 @@
#include "einfo.h"
#include "rc-misc.h"
/* usecs to wait while we poll the file existance */
#define WAIT_INTERVAL 20000000
#define ONE_SECOND 690000000
/* Applet is first parsed in rc.c - no point in doing it again */
extern const char *applet;
@ -77,6 +81,8 @@ static int do_e(int argc, char **argv)
char *p;
int level = 0;
const char *fmt = "%s";
struct timespec ts;
struct timeval stop, now;
/* Punt applet */
argc--;
@ -97,11 +103,14 @@ static int do_e(int argc, char **argv)
if (strcmp(applet, "eend") == 0 ||
strcmp(applet, "ewend") == 0 ||
strcmp(applet, "veend") == 0 ||
strcmp(applet, "vweend") == 0)
strcmp(applet, "vweend") == 0 ||
strcmp(applet, "ewaitfile") == 0)
{
errno = 0;
retval = (int) strtoimax(argv[0], NULL, 0);
if (errno != 0)
retval = (int)strtoimax(argv[0], &p, 0);
if (!p || *p != '\0')
errno = EINVAL;
if (errno)
retval = EXIT_FAILURE;
else {
argc--;
@ -124,6 +133,38 @@ static int do_e(int argc, char **argv)
}
}
if (strcmp(applet, "ewaitfile") == 0) {
if (errno)
eerrorx("%s: invalid timeout", applet);
if (argc == 0)
eerrorx("%s: not enough arguments", applet);
gettimeofday(&stop, NULL);
/* retval stores the timeout */
stop.tv_sec += retval;
ts.tv_sec = 0;
ts.tv_nsec = WAIT_INTERVAL;
for (i = 0; i < argc; i++) {
ebeginv("Waiting for %s", argv[i]);
for (;;){
if (exists(argv[i]))
break;
if (nanosleep(&ts, NULL) == -1)
return EXIT_FAILURE;
gettimeofday(&now, NULL);
if (retval <= 0)
continue;
if (timercmp(&now, &stop, <))
continue;
eendv(EXIT_FAILURE,
"timed out waiting for %s", argv[i]);
return EXIT_FAILURE;
}
eendv(EXIT_SUCCESS, NULL);
}
return EXIT_SUCCESS;
}
if (argc > 0) {
for (i = 0; i < argc; i++)
l += strlen(argv[i]) + 1;