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tc: m_xt: Simplify argc adjusting in parse_ipt() 

And while at it, also improve the error message in case too few
parameters have been given.

Signed-off-by: Phil Sutter <phil@nwl.cc>
This commit is contained in:
Phil Sutter 2016-06-10 13:42:07 +02:00 committed by Stephen Hemminger
parent 28432f370e
commit f6ddd9c5da
1 changed files with 6 additions and 11 deletions
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17
tc/m_xt.c
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@ -124,7 +124,7 @@ static int parse_ipt(struct action_util *a, int *argc_p,
int c;
char **argv = *argv_p;
int argc = 0;
int argc;
char k[16];
int size = 0;
int iok = 0, ok = 0;
@ -136,19 +136,14 @@ static int parse_ipt(struct action_util *a, int *argc_p,
xtables_init_all(&tmp_tcipt_globals, NFPROTO_IPV4);
set_lib_dir();
{
int i;
for (i = 0; i < *argc_p; i++) {
if (NULL == argv[i] || 0 == strcmp(argv[i], "action")) {
break;
}
}
argc = i;
/* parse only up until the next action */
for (argc = 0; argc < *argc_p; argc++) {
if (!argv[argc] || !strcmp(argv[argc], "action"))
break;
}
if (argc <= 2) {
fprintf(stderr, "bad arguments to ipt %d vs %d\n", argc, *argc_p);
fprintf(stderr, "too few arguments for xt, need at least '-j <target>'\n");
return -1;
}