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Add name2sig() and simplify kill(1)

This commit is contained in:
sin 2014-11-11 16:27:17 +00:00
parent 88f26b222b
commit e0b0741ba1
1 changed files with 24 additions and 30 deletions
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54
kill.c
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@ -23,6 +23,7 @@ struct {
};
const char *sig2name(int);
int name2sig(const char *);
static void
usage(void)
@ -54,14 +55,9 @@ main(int argc, char *argv[])
} else if (argv[0][0] == '-' && isdigit(argv[0][1])) {
/* handle XSI extension -signum */
errno = 0;
sig = strtol(&argv[0][1], &end, 0);
sig = strtol(&argv[0][1], &end, 10);
if (*end != '\0' || errno != 0)
eprintf("%d: bad signal number\n", sig);
for (i = 0; i < LEN(sigs); i++)
if (sigs[i].sig == sig || sig == 0)
break;
if (i == LEN(sigs))
eprintf("%d: bad signal number\n", sig);
eprintf("%s: bad signal number\n", &argv[0][1]);
argc--;
argv++;
} else if (strcmp(argv[0], "-l") == 0) {
@ -74,16 +70,10 @@ main(int argc, char *argv[])
} else if (argc > 1)
usage();
errno = 0;
sig = strtol(argv[0], &end, 0);
if (*end == '\0' && errno == 0) {
name = sig2name(sig);
if (!name)
eprintf("%d: bad signal number\n", sig);
else
puts(name);
} else {
eprintf("%s: bad signal name\n", argv[0]);
}
sig = strtol(argv[0], &end, 10);
if (*end != '\0' || errno != 0)
eprintf("%s: bad signal number\n", argv[0]);
puts(sig2name(sig));
exit(0);
} else {
if (strcmp(argv[0], "-s") == 0) {
@ -96,18 +86,7 @@ main(int argc, char *argv[])
/* assume XSI extension -signame */
name = &argv[0][1];
}
if (strcmp(name, "0") == 0) {
sig = 0;
} else {
for (i = 0; i < LEN(sigs); i++) {
if (strcasecmp(sigs[i].name, name) == 0) {
sig = sigs[i].sig;
break;
}
}
if (i == LEN(sigs))
eprintf("%s: bad signal name\n", name);
}
sig = strcmp(name, "0") == 0 ? 0 : name2sig(name);
argc--;
argv++;
}
@ -117,7 +96,7 @@ main(int argc, char *argv[])
for (; argc; argc--, argv++) {
errno = 0;
pid = strtol(argv[0], &end, 0);
pid = strtol(argv[0], &end, 10);
if (*end == '\0' && errno == 0) {
if (kill(pid, sig) < 0) {
weprintf("kill %d:", pid);
@ -142,5 +121,20 @@ sig2name(int sig)
for (i = 0; i < LEN(sigs); i++)
if (sigs[i].sig == sig)
return sigs[i].name;
eprintf("%d: bad signal number\n", sig);
/* unreachable */
return NULL;
}
int
name2sig(const char *name)
{
size_t i;
for (i = 0; i < LEN(sigs); i++)
if (strcasecmp(sigs[i].name, name) == 0)
return sigs[i].sig;
eprintf("%s: bad signal name\n", name);
/* unreachable */
return -1;
}