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wait-time-sync: add optional -t/--timeout parameter

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This commit is contained in:
mglae 2020-12-26 19:11:12 +01:00
parent 50926608a5
commit c8c692f4ba
1 changed files with 33 additions and 4 deletions
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37
packages/sysutils/wait-time-sync/sources/wait-time-sync.c
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@ -2,14 +2,43 @@
/* Copyright (C) 2020-present Team LibreELEC (https://libreelec.tv) */ /* Copyright (C) 2020-present Team LibreELEC (https://libreelec.tv) */
#include <sys/timex.h> #include <sys/timex.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h> #include <unistd.h>
#include <string.h>
#include <errno.h> #include <errno.h>
#include <limits.h>
int main() void usage(char *name)
{ {
int rc; if (!name)
name = "wait-time-sync";
for (;;) printf("Usage: %s [-t seconds | --timeout seconds]\n", name);
exit(2);
}
int main(int argc, char** argv)
{
unsigned timeout = UINT_MAX;
int rc = 0;
if (argc == 3)
{
unsigned long val;
char *p;
if (strcmp(argv[1], "-t") && strcmp(argv[1], "--timeout"))
usage(argv[0]);
val = strtoul(argv[2], &p, 0);
if (*p || val == 0 || val >= UINT_MAX/3)
usage(argv[0]);
timeout = (unsigned)val * 3;
}
else if (argc != 1)
usage(argv[0]);
for ( ; timeout; --timeout)
{ {
struct timex tx = {}; struct timex tx = {};
@ -19,5 +48,5 @@ int main()
usleep(1000000U/3); usleep(1000000U/3);
} }
return rc == -1 ? errno : 0; return rc == -1 ? errno : !timeout;
} }