1 files changed, 96 insertions, 0 deletions
diff --git a/util/nvmutil/nvmutil.h b/util/nvmutil/nvmutil.h
new file mode 100644
index 00000000..3f084da4
--- /dev/null
+++ b/util/nvmutil/nvmutil.h
@@ -0,0 +1,96 @@
+/* Copyright (c) 2022, 2023 Leah Rowe <info@minifree.org> */
+/* SPDX-License-Identifier: MIT */
+
+#include <sys/stat.h>
+
+#include <dirent.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+void openFiles(const char *path);
+void readGbeFile(const char *path);
+void cmd_setmac(void);
+int invalidMacAddress(const char *strMac, uint16_t *mac);
+uint8_t hextonum(char chs);
+uint8_t rhex(void);
+void cmd_dump(void);
+void showmac(int partnum);
+void hexdump(int partnum);
+void cmd_setchecksum(void);
+void cmd_brick(void);
+void cmd_swap(void);
+void cmd_copy(void);
+int validChecksum(int partnum);
+void setWord(int pos16, int partnum, uint16_t val16);
+void xorswap_buf(int partnum);
+void writeGbeFile(const char *filename);
+
+#define FILENAME argv[1]
+#define COMMAND argv[2]
+#define MAC_ADDRESS argv[3]
+#define PARTNUM argv[3]
+#define SIZE_4KB 0x1000
+#define SIZE_8KB 0x2000
+
+uint16_t buf16[SIZE_4KB], mac[3] = {0, 0, 0};
+uint8_t *buf = (uint8_t *) &buf16;
+size_t nf = 128, gbe[2];
+uint8_t nvmPartModified[2] = {0, 0}, skipread[2] = {0, 0};
+int endian = 1, flags = O_RDWR, rfd, fd, part, gbeFileModified = 0;
+
+const char *strMac = NULL, *strRMac = "??:??:??:??:??:??";
+
+typedef struct op {
+	char *str;
+	void (*cmd)(void);
+	int args;
+} op_t;
+op_t op[] = {
+{ .str = "dump", .cmd = cmd_dump, .args = 3},
+{ .str = "setmac", .cmd = cmd_setmac, .args = 3},
+{ .str = "swap", .cmd = cmd_swap, .args = 3},
+{ .str = "copy", .cmd = cmd_copy, .args = 4},
+{ .str = "brick", .cmd = cmd_brick, .args = 4},
+{ .str = "setchecksum", .cmd = cmd_setchecksum, .args = 4},
+};
+void (*cmd)(void) = NULL;
+
+#define ERR() errno = errno ? errno : ECANCELED
+#define err_if(x) if (x) err(ERR(), NULL)
+
+#define xopen(f,l,p) if (opendir(l) != NULL) err(errno = EISDIR, "%s", l); \
+	if ((f = open(l, p)) == -1) err(ERR(), "%s", l); \
+	if (fstat(f, &st) == -1) err(ERR(), "%s", l)
+#define xpread(f, b, n, o, l) if (pread(f, b, n, o) == -1) err(ERR(), "%s", l)
+#define handle_endianness(r) if (((uint8_t *) &endian)[0] ^ 1) xorswap_buf(r)
+#define xpwrite(f, b, n, o, l) if (pwrite(f, b, n, o) == -1) err(ERR(), "%s", l)
+#define xclose(f, l) if (close(f) == -1) err(ERR(), "%s", l)
+
+#define xorswap(x, y) x ^= y, y ^= x, x ^= y
+#define word(pos16, partnum) buf16[pos16 + (partnum << 11)]
+
+void
+xpledge(const char *promises, const char *execpromises)
+{
+	(void)promises; (void)execpromises;
+#ifdef __OpenBSD__
+	if (pledge(promises, execpromises) == -1)
+		err(ERR(), "pledge");
+#endif
+}
+
+void
+xunveil(const char *path, const char *permissions)
+{
+	(void)path; (void)permissions;
+#ifdef __OpenBSD__
+	if (unveil(path, permissions) == -1)
+		err(ERR(), "unveil");
+#endif
+}