crypto: Remove orphan tools/crypto directory

The directory tools/crypto and the only file under it never gets
built anywhere.  This program should instead be incorporated into
one of the existing user-space projects, crconf or libkcapi.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

tools/crypto/getstat.c

-/* Heavily copied from libkcapi 2015 - 2017, Stephan Mueller <smueller@chronox.de> */
-#include <errno.h>
-#include <linux/cryptouser.h>
-#include <linux/netlink.h>
-#include <linux/rtnetlink.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
-
-#define CR_RTA(x)  ((struct rtattr *)(((char *)(x)) + NLMSG_ALIGN(sizeof(struct crypto_user_alg))))
-
-static int get_stat(const char *drivername)
-{
-	struct {
-		struct nlmsghdr n;
-		struct crypto_user_alg cru;
-	} req;
-	struct sockaddr_nl nl;
-	int sd = 0, ret;
-	socklen_t addr_len;
-	struct iovec iov;
-	struct msghdr msg;
-	char buf[4096];
-	struct nlmsghdr *res_n = (struct nlmsghdr *)buf;
-	struct crypto_user_alg *cru_res = NULL;
-	int res_len = 0;
-	struct rtattr *tb[CRYPTOCFGA_MAX + 1];
-	struct rtattr *rta;
-	struct nlmsgerr *errmsg;
-
-	memset(&req, 0, sizeof(req));
-	memset(&buf, 0, sizeof(buf));
-	memset(&msg, 0, sizeof(msg));
-
-	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(req.cru));
-	req.n.nlmsg_flags = NLM_F_REQUEST;
-	req.n.nlmsg_type = CRYPTO_MSG_GETSTAT;
-	req.n.nlmsg_seq = time(NULL);
-
-	strncpy(req.cru.cru_driver_name, drivername, strlen(drivername));
-
-	sd =  socket(AF_NETLINK, SOCK_RAW, NETLINK_CRYPTO);
-	if (sd < 0) {
-		fprintf(stderr, "Netlink error: cannot open netlink socket");
-		return -errno;
-	}
-	memset(&nl, 0, sizeof(nl));
-	nl.nl_family = AF_NETLINK;
-	if (bind(sd, (struct sockaddr *)&nl, sizeof(nl)) < 0) {
-		ret = -errno;
-		fprintf(stderr, "Netlink error: cannot bind netlink socket");
-		goto out;
-	}
-
-	/* sanity check that netlink socket was successfully opened */
-	addr_len = sizeof(nl);
-	if (getsockname(sd, (struct sockaddr *)&nl, &addr_len) < 0) {
-		ret = -errno;
-		printf("Netlink error: cannot getsockname");
-		goto out;
-	}
-	if (addr_len != sizeof(nl)) {
-		ret = -errno;
-		printf("Netlink error: wrong address length %d", addr_len);
-		goto out;
-	}
-	if (nl.nl_family != AF_NETLINK) {
-		ret = -errno;
-		printf("Netlink error: wrong address family %d",
-				nl.nl_family);
-		goto out;
-	}
-
-	memset(&nl, 0, sizeof(nl));
-	nl.nl_family = AF_NETLINK;
-	iov.iov_base = (void *)&req.n;
-	iov.iov_len = req.n.nlmsg_len;
-	msg.msg_name = &nl;
-	msg.msg_namelen = sizeof(nl);
-	msg.msg_iov = &iov;
-	msg.msg_iovlen = 1;
-	if (sendmsg(sd, &msg, 0) < 0) {
-		ret = -errno;
-		printf("Netlink error: sendmsg failed");
-		goto out;
-	}
-	memset(buf, 0, sizeof(buf));
-	iov.iov_base = buf;
-	while (1) {
-		iov.iov_len = sizeof(buf);
-		ret = recvmsg(sd, &msg, 0);
-		if (ret < 0) {
-			if (errno == EINTR || errno == EAGAIN)
-				continue;
-			ret = -errno;
-			printf("Netlink error: netlink receive error");
-			goto out;
-		}
-		if (ret == 0) {
-			ret = -errno;
-			printf("Netlink error: no data");
-			goto out;
-		}
-		if (ret > sizeof(buf)) {
-			ret = -errno;
-			printf("Netlink error: received too much data");
-			goto out;
-		}
-		break;
-	}
-
-	ret = -EFAULT;
-	res_len = res_n->nlmsg_len;
-	if (res_n->nlmsg_type == NLMSG_ERROR) {
-		errmsg = NLMSG_DATA(res_n);
-		fprintf(stderr, "Fail with %d\n", errmsg->error);
-		ret = errmsg->error;
-		goto out;
-	}
-
-	if (res_n->nlmsg_type == CRYPTO_MSG_GETSTAT) {
-		cru_res = NLMSG_DATA(res_n);
-		res_len -= NLMSG_SPACE(sizeof(*cru_res));
-	}
-	if (res_len < 0) {
-		printf("Netlink error: nlmsg len %d\n", res_len);
-		goto out;
-	}
-
-	if (!cru_res) {
-		ret = -EFAULT;
-		printf("Netlink error: no cru_res\n");
-		goto out;
-	}
-
-	rta = CR_RTA(cru_res);
-	memset(tb, 0, sizeof(struct rtattr *) * (CRYPTOCFGA_MAX + 1));
-	while (RTA_OK(rta, res_len)) {
-		if ((rta->rta_type <= CRYPTOCFGA_MAX) && (!tb[rta->rta_type]))
-			tb[rta->rta_type] = rta;
-		rta = RTA_NEXT(rta, res_len);
-	}
-	if (res_len) {
-		printf("Netlink error: unprocessed data %d",
-				res_len);
-		goto out;
-	}
-
-	if (tb[CRYPTOCFGA_STAT_HASH]) {
-		struct rtattr *rta = tb[CRYPTOCFGA_STAT_HASH];
-		struct crypto_stat_hash *rhash =
-			(struct crypto_stat_hash *)RTA_DATA(rta);
-		printf("%s\tHash\n\tHash: %llu bytes: %llu\n\tErrors: %llu\n",
-			drivername,
-			rhash->stat_hash_cnt, rhash->stat_hash_tlen,
-			rhash->stat_err_cnt);
-	} else if (tb[CRYPTOCFGA_STAT_COMPRESS]) {
-		struct rtattr *rta = tb[CRYPTOCFGA_STAT_COMPRESS];
-		struct crypto_stat_compress *rblk =
-			(struct crypto_stat_compress *)RTA_DATA(rta);
-		printf("%s\tCompress\n\tCompress: %llu bytes: %llu\n\tDecompress: %llu bytes: %llu\n\tErrors: %llu\n",
-			drivername,
-			rblk->stat_compress_cnt, rblk->stat_compress_tlen,
-			rblk->stat_decompress_cnt, rblk->stat_decompress_tlen,
-			rblk->stat_err_cnt);
-	} else if (tb[CRYPTOCFGA_STAT_ACOMP]) {
-		struct rtattr *rta = tb[CRYPTOCFGA_STAT_ACOMP];
-		struct crypto_stat_compress *rcomp =
-			(struct crypto_stat_compress *)RTA_DATA(rta);
-		printf("%s\tACompress\n\tCompress: %llu bytes: %llu\n\tDecompress: %llu bytes: %llu\n\tErrors: %llu\n",
-			drivername,
-			rcomp->stat_compress_cnt, rcomp->stat_compress_tlen,
-			rcomp->stat_decompress_cnt, rcomp->stat_decompress_tlen,
-			rcomp->stat_err_cnt);
-	} else if (tb[CRYPTOCFGA_STAT_AEAD]) {
-		struct rtattr *rta = tb[CRYPTOCFGA_STAT_AEAD];
-		struct crypto_stat_aead *raead =
-			(struct crypto_stat_aead *)RTA_DATA(rta);
-		printf("%s\tAEAD\n\tEncrypt: %llu bytes: %llu\n\tDecrypt: %llu bytes: %llu\n\tErrors: %llu\n",
-			drivername,
-			raead->stat_encrypt_cnt, raead->stat_encrypt_tlen,
-			raead->stat_decrypt_cnt, raead->stat_decrypt_tlen,
-			raead->stat_err_cnt);
-	} else if (tb[CRYPTOCFGA_STAT_BLKCIPHER]) {
-		struct rtattr *rta = tb[CRYPTOCFGA_STAT_BLKCIPHER];
-		struct crypto_stat_cipher *rblk =
-			(struct crypto_stat_cipher *)RTA_DATA(rta);
-		printf("%s\tCipher\n\tEncrypt: %llu bytes: %llu\n\tDecrypt: %llu bytes: %llu\n\tErrors: %llu\n",
-			drivername,
-			rblk->stat_encrypt_cnt, rblk->stat_encrypt_tlen,
-			rblk->stat_decrypt_cnt, rblk->stat_decrypt_tlen,
-			rblk->stat_err_cnt);
-	} else if (tb[CRYPTOCFGA_STAT_AKCIPHER]) {
-		struct rtattr *rta = tb[CRYPTOCFGA_STAT_AKCIPHER];
-		struct crypto_stat_akcipher *rblk =
-			(struct crypto_stat_akcipher *)RTA_DATA(rta);
-		printf("%s\tAkcipher\n\tEncrypt: %llu bytes: %llu\n\tDecrypt: %llu bytes: %llu\n\tSign: %llu\n\tVerify: %llu\n\tErrors: %llu\n",
-			drivername,
-			rblk->stat_encrypt_cnt, rblk->stat_encrypt_tlen,
-			rblk->stat_decrypt_cnt, rblk->stat_decrypt_tlen,
-			rblk->stat_sign_cnt, rblk->stat_verify_cnt,
-			rblk->stat_err_cnt);
-	} else if (tb[CRYPTOCFGA_STAT_CIPHER]) {
-		struct rtattr *rta = tb[CRYPTOCFGA_STAT_CIPHER];
-		struct crypto_stat_cipher *rblk =
-			(struct crypto_stat_cipher *)RTA_DATA(rta);
-		printf("%s\tcipher\n\tEncrypt: %llu bytes: %llu\n\tDecrypt: %llu bytes: %llu\n\tErrors: %llu\n",
-			drivername,
-			rblk->stat_encrypt_cnt, rblk->stat_encrypt_tlen,
-			rblk->stat_decrypt_cnt, rblk->stat_decrypt_tlen,
-			rblk->stat_err_cnt);
-	} else if (tb[CRYPTOCFGA_STAT_RNG]) {
-		struct rtattr *rta = tb[CRYPTOCFGA_STAT_RNG];
-		struct crypto_stat_rng *rrng =
-			(struct crypto_stat_rng *)RTA_DATA(rta);
-		printf("%s\tRNG\n\tSeed: %llu\n\tGenerate: %llu bytes: %llu\n\tErrors: %llu\n",
-			drivername,
-			rrng->stat_seed_cnt,
-			rrng->stat_generate_cnt, rrng->stat_generate_tlen,
-			rrng->stat_err_cnt);
-	} else if (tb[CRYPTOCFGA_STAT_KPP]) {
-		struct rtattr *rta = tb[CRYPTOCFGA_STAT_KPP];
-		struct crypto_stat_kpp *rkpp =
-			(struct crypto_stat_kpp *)RTA_DATA(rta);
-		printf("%s\tKPP\n\tSetsecret: %llu\n\tGenerate public key: %llu\n\tCompute_shared_secret: %llu\n\tErrors: %llu\n",
-			drivername,
-			rkpp->stat_setsecret_cnt,
-			rkpp->stat_generate_public_key_cnt,
-			rkpp->stat_compute_shared_secret_cnt,
-			rkpp->stat_err_cnt);
-	} else {
-		fprintf(stderr, "%s is of an unknown algorithm\n", drivername);
-	}
-	ret = 0;
-out:
-	close(sd);
-	return ret;
-}
-
-int main(int argc, const char *argv[])
-{
-	char buf[4096];
-	FILE *procfd;
-	int i, lastspace;
-	int ret;
-
-	procfd = fopen("/proc/crypto", "r");
-	if (!procfd) {
-		ret = errno;
-		fprintf(stderr, "Cannot open /proc/crypto %s\n", strerror(errno));
-		return ret;
-	}
-	if (argc > 1) {
-		if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")) {
-			printf("Usage: %s [-h|--help] display this help\n", argv[0]);
-			printf("Usage: %s display all crypto statistics\n", argv[0]);
-			printf("Usage: %s drivername1 drivername2 ... = display crypto statistics about drivername1 ...\n", argv[0]);
-			return 0;
-		}
-		for (i = 1; i < argc; i++) {
-			ret = get_stat(argv[i]);
-			if (ret) {
-				fprintf(stderr, "Failed with %s\n", strerror(-ret));
-				return ret;
-			}
-		}
-		return 0;
-	}
-
-	while (fgets(buf, sizeof(buf), procfd)) {
-		if (!strncmp(buf, "driver", 6)) {
-			lastspace = 0;
-			i = 0;
-			while (i < strlen(buf)) {
-				i++;
-				if (buf[i] == ' ')
-					lastspace = i;
-			}
-			buf[strlen(buf) - 1] = '\0';
-			ret = get_stat(buf + lastspace + 1);
-			if (ret) {
-				fprintf(stderr, "Failed with %s\n", strerror(-ret));
-				goto out;
-			}
-		}
-	}
-out:
-	fclose(procfd);
-	return ret;
-}