util/mkhtemp: new utility (hardened mktemp)

part of the same code library as nvmutil.

as part of this, i renamed util/nvmutil
to util/libreboot-utils/ because it is
now a multi-utility codebase.

this is more efficient, since i also wish
to use mkhtemp (function) in nvmutil.

Signed-off-by: Leah Rowe <leah@libreboot.org>

1 files changed, 0 insertions, 279 deletions

diff --git a/util/nvmutil/lib/state.c b/util/nvmutil/lib/state.c
deleted file mode 100644
index 19d5cd8c..00000000
--- a/util/nvmutil/lib/state.c
+++ /dev/null
@@ -1,279 +0,0 @@
-/* SPDX-License-Identifier: MIT
- * Copyright (c) 2022-2026 Leah Rowe <leah@libreboot.org>
- *
- * State machine (singleton) for nvmutil data.
- */
-
-#ifdef __OpenBSD__
-#include <sys/param.h>
-#endif
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <stdarg.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "../include/common.h"
-
-struct xstate *
-xstart(int argc, char *argv[])
-{
-	static int first_run = 1;
-	static int pre_init = 0;
-
-	static struct xstate us = {
-	/* DO NOT MESS THIS UP, OR THERE WILL BE DEMONS */
-	{
-	{
-		CMD_DUMP, "dump", cmd_helper_dump, ARGC_3,
-		ARG_NOPART,
-		SKIP_CHECKSUM_READ, SKIP_CHECKSUM_WRITE,
-		NVM_SIZE, O_RDONLY
-	}, {
-		CMD_SETMAC, "setmac", cmd_helper_setmac, ARGC_3,
-		ARG_NOPART,
-		CHECKSUM_READ, CHECKSUM_WRITE,
-		NVM_SIZE, O_RDWR
-	}, {
-		CMD_SWAP, "swap", cmd_helper_swap, ARGC_3,
-		ARG_NOPART,
-		CHECKSUM_READ, SKIP_CHECKSUM_WRITE,
-		GBE_PART_SIZE, O_RDWR
-	}, {
-		CMD_COPY, "copy", cmd_helper_copy, ARGC_4,
-		ARG_PART,
-		CHECKSUM_READ, SKIP_CHECKSUM_WRITE,
-		GBE_PART_SIZE, O_RDWR
-	}, {
-		CMD_CAT, "cat", cmd_helper_cat, ARGC_3,
-		ARG_NOPART,
-		CHECKSUM_READ, SKIP_CHECKSUM_WRITE,
-		GBE_PART_SIZE, O_RDONLY
-	}, {
-		CMD_CAT16, "cat16", cmd_helper_cat16, ARGC_3,
-		ARG_NOPART,
-		CHECKSUM_READ, SKIP_CHECKSUM_WRITE,
-		GBE_PART_SIZE, O_RDONLY
-	}, {
-		CMD_CAT128, "cat128", cmd_helper_cat128, ARGC_3,
-		ARG_NOPART,
-		CHECKSUM_READ, SKIP_CHECKSUM_WRITE,
-		GBE_PART_SIZE, O_RDONLY
-	}
-	},
-
-	/* ->mac */
-	{NULL, "xx:xx:xx:xx:xx:xx", {0, 0, 0}}, /* .str, .rmac, .mac_buf */
-
-	/* .f */
-	{0},
-
-	/* .argv0 (for our getprogname implementation) */
-	NULL,
-
-	/* ->i   (index to cmd[]) */
-	0,
-
-	/* .no_cmd (set 0 when a command is found) */
-	1,
-
-	/* .cat (cat helpers set this) */
-	-1
-
-	};
-
-	if (!first_run) {
-		if (pre_init)
-			err_no_cleanup(ECANCELED,
-			    "Outside access to state during init");
-
-		first_run = 0;
-
-		return &us;
-	}
-
-	if (argc < 3)
-		err_no_cleanup(EINVAL, "xstart: Too few arguments");
-	if (argv == NULL)
-		err_no_cleanup(EINVAL, "xstart: NULL argv");
-	
-	first_run = 0;
-	pre_init = 1;
-
-	us.f.buf = us.f.real_buf;
-
-	us.argv0 = argv[0];
-	us.f.fname = argv[1];
-
-	if (new_tmpfile(&us.f.tmp_fd, &us.f.tname) < 0)
-		err_no_cleanup(errno, "xstart: cannot create tmpfile");
-
-	/* parse user command */
-/* TODO: CHECK ACCESSES VIA xstatus() */
-	set_cmd(argc, argv);
-	set_cmd_args(argc, argv);
-
-	if (us.f.tname == NULL)
-		err_no_cleanup(errno, "x->f.tname null");
-	if (*us.f.tname == '\0')
-		err_no_cleanup(errno, "x->f.tname empty");
-
-	if (fstat(us.f.tmp_fd, &us.f.tmp_st) < 0)
-		err_no_cleanup(errno, "%s: stat", us.f.tname);
-
-	memset(us.f.real_buf, 0, sizeof(us.f.real_buf));
-	memset(us.f.bufcmp, 0, sizeof(us.f.bufcmp));
-
-	/* for good measure */
-	memset(us.f.pad, 0, sizeof(us.f.pad));
-
-	pre_init = 0;
-
-	return &us;
-}
-
-struct xstate *
-xstatus(void)
-{
-	struct xstate *x = xstart(0, NULL);
-
-	if (x == NULL)
-		err_no_cleanup(EACCES, "NULL pointer to xstate");
-
-	sanitize_command_list();
-
-	return x;
-}
-
-/* early init functions that
-   should not access state
-   WARNING:
-   does not do cleanup. only
-   call this during pre-init
- */
-void
-err_no_cleanup(int nvm_errval, const char *msg, ...)
-{
-	va_list args;
-
-	if (errno == 0)
-		errno = nvm_errval;
-	if (!errno)
-		errno = ECANCELED;
-
-	fprintf(stderr, "nvmutil: ");
-
-	va_start(args, msg);
-	vfprintf(stderr, msg, args);
-	va_end(args);
-
-	fprintf(stderr, ": %s\n", strerror(errno));
-
-	exit(EXIT_FAILURE);
-}
-
-void
-err(int nvm_errval, const char *msg, ...)
-{
-	struct xstate *x = xstatus();
-
-	va_list args;
-
-	if (errno == 0)
-		errno = nvm_errval;
-	if (!errno)
-		errno = ECANCELED;
-
-	(void)exit_cleanup();
-
-	if (x != NULL)
-		fprintf(stderr, "%s: ", getnvmprogname());
-
-	va_start(args, msg);
-	vfprintf(stderr, msg, args);
-	va_end(args);
-
-	fprintf(stderr, ": %s\n", strerror(errno));
-
-	exit(EXIT_FAILURE);
-}
-
-const char *
-getnvmprogname(void)
-{
-	struct xstate *x = xstatus();
-
-	const char *p;
-	static char fallback[] = "nvmutil";
-
-	char *rval = fallback;
-
-	if (x != NULL) {
-		if (x->argv0 == NULL || *x->argv0 == '\0')
-			return "";
-
-		rval = x->argv0;
-	}
-
-	p = strrchr(rval, '/');
-
-	if (p)
-		return p + 1;
-	else
-		return rval;
-}
-
-int
-exit_cleanup(void)
-{
-	struct xstate *x = xstatus();
-	struct xfile *f;
-
-	int close_err;
-	int saved_errno;
-
-	close_err = 0;
-	saved_errno = errno;
-
-	if (x != NULL) {
-		f = &x->f;
-
-		if (f->gbe_fd > -1) {
-			if (close_on_eintr(f->gbe_fd) == -1) {
-				f->gbe_fd = -1;
-				close_err = 1;
-			}
-			f->gbe_fd = -1;
-		}
-
-		if (f->tmp_fd > -1) {
-			if (close_on_eintr(f->tmp_fd) == -1) {
-				f->tmp_fd = -1;
-				close_err = 1;
-			}
-			f->tmp_fd = -1;
-		}
-
-		if (f->tname != NULL) {
-			if (unlink(f->tname) == -1)
-				close_err = 1;
-		}
-
-		f->tmp_fd = -1;
-	}
-
-	if (saved_errno)
-		errno = saved_errno;
-
-	if (close_err)
-		return -1;
-
-	return 0;
-}