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truss: print more information about traced sysctls

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MFC after:	2 weeks
Sponsored by:	Mysterious Code Ltd.
This commit is contained in:
Pawel Biernacki 2020-07-05 19:53:54 +00:00
parent 588fbadffb
commit 43ec732a2c
1 changed files with 42 additions and 24 deletions
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66
usr.bin/truss/syscalls.c
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@ -1577,12 +1577,35 @@ print_cmsgs(FILE *fp, pid_t pid, bool receive, struct msghdr *msghdr)
}
static void
print_sysctl_oid(FILE *fp, int *oid, int len)
print_sysctl_oid(FILE *fp, int *oid, size_t len)
{
int i;
size_t i;
bool first;
for (i = 0; i < len; i++)
fprintf(fp, ".%d", oid[i]);
first = true;
fprintf(fp, "{ ");
for (i = 0; i < len; i++) {
fprintf(fp, "%s%d", first ? "" : ".", oid[i]);
first = false;
}
fprintf(fp, " }");
}
static void
print_sysctl(FILE *fp, int *oid, size_t len)
{
char name[BUFSIZ];
int qoid[CTL_MAXNAME + 2];
size_t i;
qoid[0] = CTL_SYSCTL;
qoid[1] = CTL_SYSCTL_NAME;
memcpy(qoid + 2, oid, len * sizeof(int));
i = sizeof(name);
if (sysctl(qoid, len + 2, name, &i, 0, 0) == -1)
print_sysctl_oid(fp, oid, len);
else
fprintf(fp, "%s", name);
}
/*
@ -2298,9 +2321,8 @@ print_arg(struct syscall_args *sc, unsigned long *args, register_t *retval,
break;
case Sysctl: {
char name[BUFSIZ];
int oid[CTL_MAXNAME + 2], qoid[CTL_MAXNAME + 2];
size_t i;
int len;
int oid[CTL_MAXNAME + 2];
size_t len;
memset(name, 0, sizeof(name));
len = args[sc->offset + 1];
@ -2314,39 +2336,35 @@ print_arg(struct syscall_args *sc, unsigned long *args, register_t *retval,
fprintf(fp, "debug");
break;
case CTL_SYSCTL_NAME:
fprintf(fp, "name");
fprintf(fp, "name ");
print_sysctl_oid(fp, oid + 2, len - 2);
break;
case CTL_SYSCTL_NEXT:
fprintf(fp, "next");
break;
case CTL_SYSCTL_NAME2OID:
fprintf(fp, "name2oid");
fprintf(fp, "name2oid %s",
get_string(pid,
args[sc->offset + 4],
args[sc->offset + 5]));
break;
case CTL_SYSCTL_OIDFMT:
fprintf(fp, "oidfmt");
print_sysctl_oid(fp, oid + 2, len - 2);
fprintf(fp, "oidfmt ");
print_sysctl(fp, oid + 2, len - 2);
break;
case CTL_SYSCTL_OIDDESCR:
fprintf(fp, "oiddescr");
print_sysctl_oid(fp, oid + 2, len - 2);
fprintf(fp, "oiddescr ");
print_sysctl(fp, oid + 2, len - 2);
break;
case CTL_SYSCTL_OIDLABEL:
fprintf(fp, "oidlabel");
print_sysctl_oid(fp, oid + 2, len - 2);
fprintf(fp, "oidlabel ");
print_sysctl(fp, oid + 2, len - 2);
break;
default:
print_sysctl_oid(fp, oid + 1, len - 1);
print_sysctl(fp, oid + 1, len - 1);
}
} else {
qoid[0] = CTL_SYSCTL;
qoid[1] = CTL_SYSCTL_NAME;
memcpy(qoid + 2, oid, len * sizeof(int));
i = sizeof(name);
if (sysctl(qoid, len + 2, name, &i, 0, 0) == -1)
print_sysctl_oid(fp, qoid + 2, len);
else
fprintf(fp, "%s", name);
print_sysctl(fp, oid, len);
}
fprintf(fp, "\"");
}