libreboot-utils: fix ALL compiler warnings

i wasn't using strict mode enough in make:

make strict

now it compiles cleanly. mostly removing
unused variables, fixing implicit conversions,
etc.

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

14 files changed, 143 insertions, 154 deletions

diff --git a/util/libreboot-utils/include/common.h b/util/libreboot-utils/include/common.h
index 48831ea3..a08dec08 100644
--- a/util/libreboot-utils/include/common.h
+++ b/util/libreboot-utils/include/common.h
@@ -84,16 +84,14 @@ int fchmod(int fd, mode_t mode);
 #define MAX_CMD_LEN 50
 
 #ifndef PATH_MAX
+#define PATH_MAX 4096
+#endif
+#ifndef PATH_MAX
 #error PATH_MAX_undefined
 #elif ((PATH_MAX) < 1024)
 #error PATH_MAX_too_low
 #endif
 
-#define OFF_ERR 0
-#ifndef OFF_RESET
-#define OFF_RESET 1
-#endif
-
 #ifndef S_ISVTX
 #define S_ISVTX 01000
 #endif
@@ -481,7 +479,7 @@ ssize_t rw_gbe_file_exact(int fd, unsigned char *mem, size_t nrw,
 
 int fsync_dir(const char *path);
 ssize_t rw_file_exact(int fd, unsigned char *mem, size_t len,
-    off_t off, int rw_type, size_t max_retries, int off_reset);
+    off_t off, int rw_type, size_t max_retries);
 ssize_t rw(int fd, void *mem, size_t nrw,
     off_t off, int rw_type);
 int io_args(int fd, void *mem, size_t nrw,
@@ -489,7 +487,7 @@ int io_args(int fd, void *mem, size_t nrw,
 int check_file(int fd, struct stat *st);
 ssize_t rw_over_nrw(ssize_t r, size_t nrw);
 off_t lseek_on_eintr(int fd, off_t off,
-    int whence, int loop_eagain, int loop_eintr);
+    int whence);
 ssize_t read_on_eintr(int fd,
     void *buf, size_t count);
 ssize_t write_on_eintr(int fd,
@@ -508,7 +506,7 @@ int rw_retry(int saved_errno, ssize_t rval);
 
 void usage(void);
 int with_fallback_errno(int fallback);
-void err_exit(int nvm_errval, const char *msg, ...);
+void exitf(const char *msg, ...);
 func_t errhook(func_t ptr); /* hook function for cleanup on err */
 const char *lbgetprogname(void);
 void no_op(void);
@@ -636,8 +634,6 @@ typedef char bool_skip_checksum_read[(SKIP_CHECKSUM_READ==0)?1:-1];
 typedef char bool_checksum_read[(CHECKSUM_READ==1)?1:-1];
 typedef char bool_skip_checksum_write[(SKIP_CHECKSUM_WRITE==0)?1:-1];
 typedef char bool_checksum_write[(CHECKSUM_WRITE==1)?1:-1];
-typedef char bool_off_err[(OFF_ERR==0)?1:-1];
-typedef char bool_off_reset[(OFF_RESET==0||OFF_RESET==1)?1:-1];
 
 #endif
 #endif
diff --git a/util/libreboot-utils/lib/checksum.c b/util/libreboot-utils/lib/checksum.c
index 97b0efca..f71bcb4f 100644
--- a/util/libreboot-utils/lib/checksum.c
+++ b/util/libreboot-utils/lib/checksum.c
@@ -59,10 +59,10 @@ read_checksums(void)
 	if (_num_invalid >= _max_invalid) {
 
 		if (_max_invalid == 1)
-			err_exit(ECANCELED, "%s: part %lu has a bad checksum",
+			exitf("%s: part %lu has a bad checksum",
 			    f->fname, (size_t)f->part);
 
-		err_exit(ECANCELED, "%s: No valid checksum found in file",
+		exitf("%s: No valid checksum found in file",
 		    f->fname);
 	}
 }
diff --git a/util/libreboot-utils/lib/command.c b/util/libreboot-utils/lib/command.c
index 5ccf9de9..526ad03b 100644
--- a/util/libreboot-utils/lib/command.c
+++ b/util/libreboot-utils/lib/command.c
@@ -43,24 +43,24 @@ sanitize_command_index(size_t c)
 	check_command_num(c);
 
 	if (cmd->argc < 3)
-		err_exit(EINVAL, "cmd index %lu: argc below 3, %d",
+		exitf("cmd index %lu: argc below 3, %d",
 		    (size_t)c, cmd->argc);
 
 	if (cmd->str == NULL)
-		err_exit(EINVAL, "cmd index %lu: NULL str",
+		exitf("cmd index %lu: NULL str",
 		    (size_t)c);
 
 	if (*cmd->str == '\0')
-		err_exit(EINVAL, "cmd index %lu: empty str",
+		exitf("cmd index %lu: empty str",
 		    (size_t)c);
 
 	if (slen(cmd->str, MAX_CMD_LEN +1, &rval) > MAX_CMD_LEN) {
-		err_exit(EINVAL, "cmd index %lu: str too long: %s",
+		exitf("cmd index %lu: str too long: %s",
 		    (size_t)c, cmd->str);
 	}
 
 	if (cmd->run == NULL)
-		err_exit(EINVAL, "cmd index %lu: cmd ptr null",
+		exitf("cmd index %lu: cmd ptr null",
 		    (size_t)c);
 
 	check_bin(cmd->arg_part, "cmd.arg_part");
@@ -74,19 +74,19 @@ sanitize_command_index(size_t c)
 	case NVM_SIZE:
 		break;
 	default:
-		err_exit(EINVAL, "Unsupported rw_size: %lu",
+		exitf("Unsupported rw_size: %lu",
 		    (size_t)gbe_rw_size);
 	}
 
 	if (gbe_rw_size > GBE_PART_SIZE)
-		err_exit(EINVAL, "rw_size larger than GbE part: %lu",
+		exitf("rw_size larger than GbE part: %lu",
 		    (size_t)gbe_rw_size);
 
 	_flag = (cmd->flags & O_ACCMODE);
 
 	if (_flag != O_RDONLY &&
 	    _flag != O_RDWR)
-		err_exit(EINVAL, "invalid cmd.flags setting");
+		exitf("invalid cmd.flags setting");
 }
 
 void
@@ -114,7 +114,7 @@ set_cmd(int argc, char *argv[])
 			return;
 		}
 
-		err_exit(EINVAL,
+		exitf(
 		    "Too few args on command '%s'", cmd);
 	}
 
@@ -139,11 +139,11 @@ set_cmd_args(int argc, char *argv[])
 	/* Maintainer bug
 	 */
 	if (cmd->arg_part && argc < 4)
-		err_exit(EINVAL,
+		exitf(
 		    "arg_part set for command that needs argc4");
 
 	if (cmd->arg_part && i == CMD_SETMAC)
-		err_exit(EINVAL,
+		exitf(
 		    "arg_part set on CMD_SETMAC");
 
 	if (i == CMD_SETMAC) {
@@ -165,13 +165,13 @@ conv_argv_part_num(const char *part_str)
 	unsigned char ch;
 
 	if (part_str[0] == '\0' || part_str[1] != '\0')
-		err_exit(EINVAL, "Partnum string '%s' wrong length", part_str);
+		exitf("Partnum string '%s' wrong length", part_str);
 
 	/* char signedness is implementation-defined
 	 */
 	ch = (unsigned char)part_str[0];
 	if (ch < '0' || ch > '1')
-		err_exit(EINVAL, "Bad part number (%c)", ch);
+		exitf("Bad part number (%c)", ch);
 
 	return (size_t)(ch - '0');
 }
@@ -180,7 +180,7 @@ void
 check_command_num(size_t c)
 {
 	if (!valid_command(c))
-		err_exit(EINVAL, "Invalid run_cmd arg: %lu",
+		exitf("Invalid run_cmd arg: %lu",
 		    (size_t)c);
 }
 
@@ -196,7 +196,7 @@ valid_command(size_t c)
 	cmd = &x->cmd[c];
 
 	if (c != cmd->chk)
-		err_exit(EINVAL,
+		exitf(
 		    "Invalid cmd chk value (%lu) vs arg: %lu",
 		    cmd->chk, c);
 
@@ -231,7 +231,7 @@ parse_mac_string(void)
 	size_t rval;
 
 	if (slen(x->mac.str, 18, &rval) != 17)
-		err_exit(EINVAL, "MAC address is the wrong length");
+		exitf("MAC address is the wrong length");
 
 	memset(mac->mac_buf, 0, sizeof(mac->mac_buf));
 
@@ -239,10 +239,10 @@ parse_mac_string(void)
 		set_mac_byte(mac_byte);
 
 	if ((mac->mac_buf[0] | mac->mac_buf[1] | mac->mac_buf[2]) == 0)
-		err_exit(EINVAL, "Must not specify all-zeroes MAC address");
+		exitf("Must not specify all-zeroes MAC address");
 
 	if (mac->mac_buf[0] & 1)
-		err_exit(EINVAL, "Must not specify multicast MAC address");
+		exitf("Must not specify multicast MAC address");
 }
 
 void
@@ -260,7 +260,7 @@ set_mac_byte(size_t mac_byte_pos)
 
 	if (mac_str_pos < 15) {
 		if ((separator = mac->str[mac_str_pos + 2]) != ':')
-			err_exit(EINVAL, "Invalid MAC address separator '%c'",
+			exitf("Invalid MAC address separator '%c'",
 			    separator);
 	}
 
@@ -282,9 +282,9 @@ set_mac_nib(size_t mac_str_pos,
 
 	if ((hex_num = hextonum(mac_ch)) > 15) {
 		if (hex_num >= 17)
-			err_exit(EIO, "Randomisation failure");
+			exitf("Randomisation failure");
 		else
-			err_exit(EINVAL, "Invalid character '%c'",
+			exitf("Invalid character '%c'",
 			    mac->str[mac_str_pos + mac_nib_pos]);
 	}
 
@@ -467,7 +467,7 @@ cat(size_t nff)
 
 	if ((size_t)x->cat != nff) {
 
-		err_exit(ECANCELED, "erroneous call to cat");
+		exitf("erroneous call to cat");
 	}
 
 	fflush(NULL);
@@ -490,11 +490,11 @@ void
 cat_buf(unsigned char *b)
 {
 	if (b == NULL)
-		err_exit(errno, "null pointer in cat command");
+		exitf("null pointer in cat command");
 
 	if (rw_file_exact(STDOUT_FILENO, b,
-	    GBE_PART_SIZE, 0, IO_WRITE, MAX_ZERO_RW_RETRY, OFF_ERR) < 0)
-		err_exit(errno, "stdout: cat");
+	    GBE_PART_SIZE, 0, IO_WRITE, MAX_ZERO_RW_RETRY) < 0)
+		exitf("stdout: cat");
 }
 void
 check_cmd(void (*fn)(void),
@@ -504,7 +504,7 @@ check_cmd(void (*fn)(void),
 	size_t i = x->i;
 
 	if (x->cmd[i].run != fn)
-		err_exit(ECANCELED, "Running %s, but cmd %s is set",
+		exitf("Running %s, but cmd %s is set",
 		    name, x->cmd[i].str);
 
 	/* prevent second command
@@ -516,6 +516,6 @@ check_cmd(void (*fn)(void),
 void
 cmd_helper_err(void)
 {
-	err_exit(ECANCELED,
+	exitf(
 	    "Erroneously running command twice");
 }
diff --git a/util/libreboot-utils/lib/file.c b/util/libreboot-utils/lib/file.c
index 12f52c56..9c4683ce 100644
--- a/util/libreboot-utils/lib/file.c
+++ b/util/libreboot-utils/lib/file.c
@@ -16,6 +16,9 @@ more correct usage example:
 long max = pathconf("/", _PC_PATH_MAX);
  */
 
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE 1
+#endif
 
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -137,7 +140,7 @@ err_fsync_dir:
 
 ssize_t
 rw_file_exact(int fd, unsigned char *mem, size_t nrw,
-    off_t off, int rw_type, size_t max_retries, int off_reset)
+    off_t off, int rw_type, size_t max_retries)
 {
 	int saved_errno = errno;
 	ssize_t rval = 0;
@@ -207,7 +210,6 @@ rw(int fd, void *mem, size_t nrw,
 {
 	ssize_t rval = 0;
 	ssize_t r = -1;
-	struct stat st;
 	int saved_errno = errno;
 	errno = 0;
 
@@ -566,11 +568,11 @@ open_file_on_eintr(const char *path,
 	errno = 0;
 
 	if (path == NULL)
-		err_exit(EINVAL, "open_file_on_eintr: null path");
+		exitf("open_file_on_eintr: null path");
 	if (fd == NULL)
-		err_exit(EFAULT, "%s: open_file_on_eintr: null fd ptr", path);
+		exitf("%s: open_file_on_eintr: null fd ptr", path);
 	if (*fd >= 0)
-		err_exit(EBADF,
+		exitf(
 		    "%s: open_file_on_eintr: file already open", path);
 
 	errno = 0;
@@ -578,7 +580,7 @@ open_file_on_eintr(const char *path,
 	    rval = open(path, flags, mode)));
 
 	if (rval < 0)
-		err_exit(errno,
+		exitf(
 		    "%s: open_file_on_eintr: could not close", path);
 
 	reset_caller_errno(rval);
@@ -594,14 +596,14 @@ open_file_on_eintr(const char *path,
 
 	if (st != NULL) {
 		if (fstat(*fd, st) < 0)
-			err_exit(errno, "%s: stat", path);
+			exitf("%s: stat", path);
 
 		if (!S_ISREG(st->st_mode))
-			err_exit(errno, "%s: not a regular file", path);
+			exitf("%s: not a regular file", path);
 	}
 
-	if (lseek_on_eintr(*fd, 0, SEEK_CUR, 1, 1) == (off_t)-1)
-		err_exit(errno, "%s: file not seekable", path);
+	if (lseek_on_eintr(*fd, 0, SEEK_CUR) == (off_t)-1)
+		exitf("%s: file not seekable", path);
 
 	errno = saved_errno; /* see previous comment */
 }
@@ -662,8 +664,7 @@ openat_on_eintr(int dirfd, const char *path,
 #endif
 
 off_t
-lseek_on_eintr(int fd, off_t off, int whence,
-    int loop_eagain, int loop_eintr)
+lseek_on_eintr(int fd, off_t off, int whence)
 {
 	int saved_errno = errno;
 	off_t rval = 0;
@@ -803,7 +804,7 @@ close_on_eintr(int *fd)
 	int rval = 0;
 
 	if (fd == NULL)
-		err_exit(EINVAL, "close_on_eintr: null pointer");
+		exitf("close_on_eintr: null pointer");
 	if (*fd < 0)
 		return;
 
@@ -812,7 +813,7 @@ close_on_eintr(int *fd)
 	    rval = close(*fd)));
 
 	if (rval < 0)
-		err_exit(errno, "close_on_eintr: could not close");
+		exitf("close_on_eintr: could not close");
 
 	*fd = -1;
 
diff --git a/util/libreboot-utils/lib/io.c b/util/libreboot-utils/lib/io.c
index 56f8528a..f8e67977 100644
--- a/util/libreboot-utils/lib/io.c
+++ b/util/libreboot-utils/lib/io.c
@@ -41,17 +41,17 @@ open_gbe_file(void)
 	    &f->gbe_st);
 
 	if (f->gbe_st.st_nlink > 1)
-		err_exit(EINVAL,
+		exitf(
 		    "%s: warning: file has multiple (%lu) hard links\n",
 		    f->fname, (size_t)f->gbe_st.st_nlink);
 
 	if (f->gbe_st.st_nlink == 0)
-		err_exit(EIO, "%s: file unlinked while open", f->fname);
+		exitf("%s: file unlinked while open", f->fname);
 
 	while (fs_retry(saved_errno,
 	    _flags = fcntl(f->gbe_fd, F_GETFL)));
 	if (_flags == -1)
-		err_exit(errno, "%s: fcntl(F_GETFL)", f->fname);
+		exitf("%s: fcntl(F_GETFL)", f->fname);
 
 	/* O_APPEND allows POSIX write() to ignore
 	 * the current write offset and write at EOF,
@@ -59,7 +59,7 @@ open_gbe_file(void)
 	 */
 
 	if (_flags & O_APPEND)
-		err_exit(EIO, "%s: O_APPEND flag", f->fname);
+		exitf("%s: O_APPEND flag", f->fname);
 
 	f->gbe_file_size = f->gbe_st.st_size;
 
@@ -69,13 +69,13 @@ open_gbe_file(void)
 	case SIZE_128KB:
 		break;
 	default:
-		err_exit(EINVAL, "File size must be 8KB, 16KB or 128KB");
+		exitf("File size must be 8KB, 16KB or 128KB");
 	}
 
 /* currently fails (EBADF), locks are advisory anyway: */
 /*
 	if (lock_file(f->gbe_fd, cmd->flags) == -1)
-		err_exit(errno, "%s: can't lock", f->fname);
+		exitf("%s: can't lock", f->fname);
 */
 
 	reset_caller_errno(0);
@@ -109,44 +109,44 @@ read_file(void)
 	/* read main file
 	 */
 	_r = rw_file_exact(f->gbe_fd, f->buf, f->gbe_file_size,
-	    0, IO_PREAD, MAX_ZERO_RW_RETRY, OFF_ERR);
+	    0, IO_PREAD, MAX_ZERO_RW_RETRY);
 
 	if (_r < 0)
-		err_exit(errno, "%s: read failed", f->fname);
+		exitf("%s: read failed", f->fname);
 
 	/* copy to tmpfile
 	 */
 	_r = rw_file_exact(f->tmp_fd, f->buf, f->gbe_file_size,
-	    0, IO_PWRITE, MAX_ZERO_RW_RETRY, OFF_ERR);
+	    0, IO_PWRITE, MAX_ZERO_RW_RETRY);
 
 	if (_r < 0)
-		err_exit(errno, "%s: %s: copy failed",
+		exitf("%s: %s: copy failed",
 		    f->fname, f->tname);
 
 	/* file size comparison
 	 */
 	if (fstat(f->tmp_fd, &_st) == -1)
-		err_exit(errno, "%s: stat", f->tname);
+		exitf("%s: stat", f->tname);
 
 	f->gbe_tmp_size = _st.st_size;
 
 	if (f->gbe_tmp_size != f->gbe_file_size)
-		err_exit(EIO, "%s: %s: not the same size",
+		exitf("%s: %s: not the same size",
 		    f->fname, f->tname);
 
 	/* needs sync, for verification
 	 */
 	if (fsync_on_eintr(f->tmp_fd) == -1)
-		err_exit(errno, "%s: fsync (tmpfile copy)", f->tname);
+		exitf("%s: fsync (tmpfile copy)", f->tname);
 
 	_r = rw_file_exact(f->tmp_fd, f->bufcmp, f->gbe_file_size,
-	    0, IO_PREAD, MAX_ZERO_RW_RETRY, OFF_ERR);
+	    0, IO_PREAD, MAX_ZERO_RW_RETRY);
 
 	if (_r < 0)
-		err_exit(errno, "%s: read failed (cmp)", f->tname);
+		exitf("%s: read failed (cmp)", f->tname);
 
 	if (vcmp(f->buf, f->bufcmp, f->gbe_file_size) != 0)
-		err_exit(errno, "%s: %s: read contents differ (pre-test)",
+		exitf("%s: %s: read contents differ (pre-test)",
 		    f->fname, f->tname);
 }
 
@@ -164,10 +164,10 @@ write_gbe_file(void)
 		return;
 
 	if (same_file(f->tmp_fd, &f->tmp_st, 0) < 0)
-		err_exit(errno, "%s: file inode/device changed", f->tname);
+		exitf("%s: file inode/device changed", f->tname);
 
 	if (same_file(f->gbe_fd, &f->gbe_st, 1) < 0)
-		err_exit(errno, "%s: file has changed", f->fname);
+		exitf("%s: file has changed", f->fname);
 
 	update_checksum = cmd->chksum_write;
 
@@ -200,7 +200,7 @@ rw_gbe_file_part(size_t p, int rw_type,
 	gbe_rw_size = cmd->rw_size;
 
 	if (rw_type < IO_PREAD || rw_type > IO_PWRITE)
-		err_exit(errno, "%s: %s: part %lu: invalid rw_type, %d",
+		exitf("%s: %s: part %lu: invalid rw_type, %d",
 		    f->fname, rw_type_str, (size_t)p, rw_type);
 
 	mem_offset = gbe_mem_offset(p, rw_type_str);
@@ -210,11 +210,11 @@ rw_gbe_file_part(size_t p, int rw_type,
 	    gbe_rw_size, file_offset, rw_type);
 
 	if (rval == -1)
-		err_exit(errno, "%s: %s: part %lu",
+		exitf("%s: %s: part %lu",
 		    f->fname, rw_type_str, (size_t)p);
 
 	if ((size_t)rval != gbe_rw_size)
-		err_exit(EIO, "%s: partial %s: part %lu",
+		exitf("%s: partial %s: part %lu",
 		    f->fname, rw_type_str, (size_t)p);
 }
 
@@ -238,7 +238,7 @@ write_to_gbe_bin(void)
 	 */
 
 	if (fsync_on_eintr(f->tmp_fd) == -1)
-		err_exit(errno, "%s: fsync (pre-verification)",
+		exitf("%s: fsync (pre-verification)",
 		    f->tname);
 
 	check_written_part(0);
@@ -247,7 +247,7 @@ write_to_gbe_bin(void)
 	report_io_err_rw();
 
 	if (f->io_err_gbe)
-		err_exit(EIO, "%s: bad write", f->fname);
+		exitf("%s: bad write", f->fname);
 
 	saved_errno = errno;
 
@@ -319,10 +319,10 @@ check_written_part(size_t p)
 	memset(f->pad, 0xff, sizeof(f->pad));
 
 	if (same_file(f->tmp_fd, &f->tmp_st, 0) < 0)
-		err_exit(errno, "%s: file inode/device changed", f->tname);
+		exitf("%s: file inode/device changed", f->tname);
 
 	if (same_file(f->gbe_fd, &f->gbe_st, 1) < 0)
-		err_exit(errno, "%s: file changed during write", f->fname);
+		exitf("%s: file changed during write", f->fname);
 
 	rval = rw_gbe_file_exact(f->tmp_fd, f->pad,
 	    gbe_rw_size, file_offset, IO_PREAD);
@@ -424,24 +424,10 @@ gbe_mv(void)
 	int saved_errno;
 	int tmp_gbe_bin_exists;
 
-	char *dest_tmp;
-	int dest_fd = -1;
-
-	char *dir = NULL;
-	char *base = NULL;
-	char *dest_name = NULL;
-
-	int dirfd = -1;
-
-	struct stat st_dir;
-
 	/* will be set 0 if it doesn't
 	 */
 	tmp_gbe_bin_exists = 1;
 
-	dest_tmp = NULL;
-	dest_fd = -1;
-
 	saved_errno = errno;
 
 	rval = fs_rename_at(f->dirfd, f->tmpbase,
@@ -450,7 +436,6 @@ gbe_mv(void)
 	if (rval > -1)
 		tmp_gbe_bin_exists = 0;
 
-ret_gbe_mv:
 	if (f->gbe_fd > -1) {
 		close_on_eintr(&f->gbe_fd);
 
@@ -532,11 +517,11 @@ gbe_x_offset(size_t p, const char *f_op, const char *d_type,
 	off = ((off_t)p) * (off_t)nsize;
 
 	if (off > ncmp - GBE_PART_SIZE)
-		err_exit(ECANCELED, "%s: GbE %s %s out of bounds",
+		exitf("%s: GbE %s %s out of bounds",
 		    f->fname, d_type, f_op);
 
 	if (off != 0 && off != ncmp >> 1)
-		err_exit(ECANCELED, "%s: GbE %s %s at bad offset",
+		exitf("%s: GbE %s %s at bad offset",
 		    f->fname, d_type, f_op);
 
 	return off;
@@ -572,7 +557,7 @@ rw_gbe_file_exact(int fd, unsigned char *mem, size_t nrw,
 		goto err_rw_gbe_file_exact;
 
 	r = rw_file_exact(fd, mem, nrw, off, rw_type,
-	    MAX_ZERO_RW_RETRY, OFF_ERR);
+	    MAX_ZERO_RW_RETRY);
 
 	return rw_over_nrw(r, nrw);
 
diff --git a/util/libreboot-utils/lib/mkhtemp.c b/util/libreboot-utils/lib/mkhtemp.c
index d3ca92b0..4d7ad0bd 100644
--- a/util/libreboot-utils/lib/mkhtemp.c
+++ b/util/libreboot-utils/lib/mkhtemp.c
@@ -58,10 +58,8 @@ new_tmp_common(int *fd, char **path, int type,
 	struct stat st;
 
 	const char *templatestr;
-	size_t templatestr_len;
 
 	size_t dirlen;
-	size_t destlen;
 	char *dest = NULL; /* final path (will be written into "path") */
 	int saved_errno = errno;
 	int dirfd = -1;
@@ -114,9 +112,8 @@ new_tmp_common(int *fd, char **path, int type,
 	else
 		templatestr = "tmp.XXXXXXXXXX";
 
-	/* may as well calculate in advance */
-	destlen = slen(tmpdir, PATH_MAX, &dirlen) + 1
-	    + slen(templatestr, PATH_MAX, &templatestr_len);
+       /* may as well calculate in advance */
+	dirlen = slen(tmpdir, PATH_MAX, &dirlen);
 	/* full path: */
 	dest = scatn(3, (const char *[]) { tmpdir, "/", templatestr },
 	    PATH_MAX, &dest);
@@ -441,7 +438,6 @@ mkhtemp(int *fd,
 
 	size_t retries;
 
-	int close_errno;
 	int saved_errno = errno;
 
 	int r;
diff --git a/util/libreboot-utils/lib/num.c b/util/libreboot-utils/lib/num.c
index ad349173..ce5e420d 100644
--- a/util/libreboot-utils/lib/num.c
+++ b/util/libreboot-utils/lib/num.c
@@ -29,7 +29,6 @@ unsigned short
 hextonum(char ch_s)
 {
 	unsigned char ch;
-	size_t rval;
 
 	ch = (unsigned char)ch_s;
 
@@ -81,7 +80,7 @@ spew_hex(const void *data, size_t len)
 		if (len <= 4294967296) /* below 4GB */
 			printf("%08zx  ", i);
 		else
-			printf("%0*zx  ", sizeof(size_t) * 2, i);
+			printf("%16zu  ", i);
 
 		for (j = 0; j < 16; j++) {
 
@@ -112,6 +111,6 @@ void
 check_bin(size_t a, const char *a_name)
 {
 	if (a > 1)
-		err_exit(EINVAL, "%s must be 0 or 1, but is %lu",
+		exitf("%s must be 0 or 1, but is %lu",
 		    a_name, (size_t)a);
 }
diff --git a/util/libreboot-utils/lib/rand.c b/util/libreboot-utils/lib/rand.c
index adfad3d7..082612d6 100644
--- a/util/libreboot-utils/lib/rand.c
+++ b/util/libreboot-utils/lib/rand.c
@@ -7,6 +7,10 @@
 #ifndef RAND_H
 #define RAND_H
 
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE 1
+#endif
+
 #ifdef __OpenBSD__
 #include <sys/param.h>
 #endif
@@ -107,7 +111,7 @@ rsize(size_t n)
 {
 	size_t rval = SIZE_MAX;
 	if (!n)
-		err_exit(EFAULT, "rsize: division by zero");
+		exitf("rsize: division by zero");
 
 	/* rejection sampling (clamp rand to eliminate modulo bias) */
 	for (; rval >= SIZE_MAX - (SIZE_MAX % n); rset(&rval, sizeof(rval)));
@@ -133,7 +137,7 @@ rset(void *buf, size_t n)
 		goto err;
 
 	if (n == 0)
-		err_exit(EPERM, "rset: zero-byte request");
+		exitf("rset: zero-byte request");
 
 #if (defined(__OpenBSD__) || defined(__FreeBSD__) || \
     defined(__NetBSD__) || defined(__APPLE__) || \
@@ -144,7 +148,7 @@ rset(void *buf, size_t n)
 #else
 	size_t off = 0;
 
-retry_rand:
+retry_rand: {
 
 #if defined(USE_URANDOM) && \
     ((USE_URANDOM) > 0)
@@ -178,6 +182,7 @@ retry_rand:
     ((USE_URANDOM) > 0)
 	close_on_eintr(&fd);
 #endif
+}
 
 #endif
 	reset_caller_errno(0);
@@ -188,7 +193,7 @@ err:
 	close_on_eintr(&fd);
 #endif
 	(void) with_fallback_errno(ECANCELED);
-	err_exit(errno, "Randomisierungsfehler");
+	exitf("Randomisierungsfehler");
 	exit(EXIT_FAILURE);
 }
 #endif
diff --git a/util/libreboot-utils/lib/state.c b/util/libreboot-utils/lib/state.c
index f32d4078..b956a483 100644
--- a/util/libreboot-utils/lib/state.c
+++ b/util/libreboot-utils/lib/state.c
@@ -4,6 +4,10 @@
  * State machine (singleton) for nvmutil data.
  */
 
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE 1
+#endif
+
 #include <sys/types.h>
 #include <sys/stat.h>
 
@@ -92,9 +96,9 @@ xstart(int argc, char *argv[])
 		return &us;
 
 	if (argc < 3)
-		err_exit(EINVAL, "xstart: Too few arguments");
+		exitf("xstart: Too few arguments");
 	if (argv == NULL)
-		err_exit(EINVAL, "xstart: NULL argv");
+		exitf("xstart: NULL argv");
 	
 	first_run = 0;
 
@@ -106,11 +110,11 @@ xstart(int argc, char *argv[])
 	us.f.tname = NULL;
 
 	if ((realdir = realpath(us.f.fname, NULL)) == NULL)
-		err_exit(errno, "xstart: can't get realpath of %s",
+		exitf("xstart: can't get realpath of %s",
 		    us.f.fname);
 
 	if (fs_dirname_basename(realdir, &dir, &base, 0) < 0)
-		err_exit(errno, "xstart: don't know CWD of %s",
+		exitf("xstart: don't know CWD of %s",
 		    us.f.fname);
 
 	sdup(base, PATH_MAX, &us.f.base);
@@ -118,26 +122,26 @@ xstart(int argc, char *argv[])
 	us.f.dirfd = fs_open(dir,
 	    O_RDONLY | O_DIRECTORY);
 	if (us.f.dirfd < 0)
-		err_exit(errno, "%s: open dir", dir);
+		exitf("%s: open dir", dir);
 
 	if (new_tmpfile(&us.f.tmp_fd, &us.f.tname, dir, ".gbe.XXXXXXXXXX") < 0)
-		err_exit(errno, "%s", us.f.tname);
+		exitf("%s", us.f.tname);
 
 	if (fs_dirname_basename(us.f.tname,
 	    &tmpdir, &tmpbase_local, 0) < 0)
-		err_exit(errno, "tmp basename");
+		exitf("tmp basename");
 
 	sdup(tmpbase_local, PATH_MAX, &us.f.tmpbase);
 
 	free_and_set_null(&tmpdir);
 
 	if (us.f.tname == NULL)
-		err_exit(errno, "x->f.tname null");
+		exitf("x->f.tname null");
 	if (*us.f.tname == '\0')
-		err_exit(errno, "x->f.tname empty");
+		exitf("x->f.tname empty");
 
 	if (fstat(us.f.tmp_fd, &us.f.tmp_st) < 0)
-		err_exit(errno, "%s: stat", us.f.tname);
+		exitf("%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));
@@ -154,7 +158,7 @@ xstatus(void)
 	struct xstate *x = xstart(0, NULL);
 
 	if (x == NULL)
-		err_exit(EACCES, "NULL pointer to xstate");
+		exitf("NULL pointer to xstate");
 
 	return x;
 }
diff --git a/util/libreboot-utils/lib/string.c b/util/libreboot-utils/lib/string.c
index ce54a524..5e0b4c33 100644
--- a/util/libreboot-utils/lib/string.c
+++ b/util/libreboot-utils/lib/string.c
@@ -54,7 +54,7 @@ pagesize(void)
 
 	if (!set) {
 		if ((rval = sysconf(_SC_PAGESIZE)) < 0)
-			err_exit(errno, "could not determine page size");
+			exitf("could not determine page size");
 		set = 1;
 	}
 
@@ -66,7 +66,7 @@ void
 free_and_set_null(char **buf)
 {
 	if (buf == NULL)
-		err_exit(EFAULT,
+		exitf(
 		    "null ptr (to ptr for freeing) in free_and_set_null");
 
 	if (*buf == NULL)
@@ -99,9 +99,9 @@ vmalloc(void **buf, size_t size)
 	errno = 0;
 
 	if (size >= SIZE_MAX - 1)
-		err_exit(EOVERFLOW, "integer overflow in vmalloc");
+		exitf("integer overflow in vmalloc");
 	if (buf == NULL)
-		err_exit(EFAULT, "Bad pointer passed to vmalloc");
+		exitf("Bad pointer passed to vmalloc");
 
 	/* lots of programs will
 	 * re-initialise a buffer
@@ -111,14 +111,14 @@ vmalloc(void **buf, size_t size)
 	 * force the programmer to behave
 	 */
 	if (*buf != NULL)
-		err_exit(EFAULT, "Non-null pointer given to vmalloc");
+		exitf("Non-null pointer given to vmalloc");
 
 	if (!size)
-		err_exit(EFAULT,
+		exitf(
 		   "Tried to vmalloc(0) and that is very bad. Fix it now");
 
 	if ((rval = malloc(size)) == NULL)
-		err_exit(errno, "malloc fail in vmalloc");
+		exitf("malloc fail in vmalloc");
 
 	reset_caller_errno(0);
 	return *buf = rval;
@@ -181,7 +181,7 @@ err:
 	if (rval != NULL)
 		*rval = -1;
 
-	err_exit(errno, "scmp");
+	exitf("scmp");
 	return -1;
 out:
 	reset_caller_errno(0);
@@ -195,7 +195,7 @@ int ccmp(const char *a, const char *b,
 	unsigned char bc;
 
 	if (if_err(a == NULL || b == NULL || rval == NULL, EFAULT))
-		err_exit(errno, "ccmp");
+		exitf("ccmp");
 
 	ac = (unsigned char)a[i];
 	bc = (unsigned char)b[i];
@@ -263,7 +263,7 @@ err:
 	if (rval != NULL)
 		*rval = 0;
 
-	err_exit(errno, "slen"); /* abort */
+	exitf("slen"); /* abort */
 	return 0; /* gcc15 is happy */
 out:
 	reset_caller_errno(0);
@@ -335,7 +335,7 @@ err:
 		*dest = NULL;
 
 	(void) with_fallback_errno(EFAULT);
-	err_exit(errno, "sdup");
+	exitf("sdup");
 
 	return NULL;
 out:
@@ -352,7 +352,7 @@ scatn(ssize_t sc, const char **sv,
 	char *final = NULL;
 	char *rcur = NULL;
 	char *rtmp = NULL;
-	size_t i;
+	ssize_t i;
 	errno = 0;
 
 	if (if_err(sc < 2, EINVAL) ||
@@ -387,7 +387,7 @@ err:
 
 	(void) with_fallback_errno(EFAULT);
 
-	err_exit(errno, "scatn");
+	exitf("scatn");
 	return NULL;
 }
 
@@ -425,7 +425,7 @@ err:
 	(void) with_fallback_errno(EINVAL);
 	if (dest != NULL)
 		*dest = NULL;
-	err_exit(errno, "scat");
+	exitf("scat");
 
 	return NULL;
 }
@@ -471,7 +471,7 @@ err:
 	free_and_set_null(&rval2);
 
 	(void) with_fallback_errno(EINVAL);
-	err_exit(errno, "dcat");
+	exitf("dcat");
 }
 
 /* because no libc reimagination is complete
@@ -491,7 +491,7 @@ vcmp(const void *s1, const void *s2, size_t n)
 	errno = 0;
 
 	if (if_err(s1 == NULL || s2 == NULL, EFAULT))
-		err_exit(EFAULT, "vcmp: null input");
+		exitf("vcmp: null input");
 
 	x = s1;
 	y = s2;
@@ -529,11 +529,10 @@ with_fallback_errno(int fallback)
 /* the one for nvmutil state is in state.c */
 /* this one just exits */
 void
-err_exit(int nvm_errval, const char *msg, ...)
+exitf(const char *msg, ...)
 {
 	va_list args;
 	int saved_errno = errno;
-	const char *p;
 
 	func_t err_cleanup = errhook(NULL);
 	err_cleanup();
@@ -561,7 +560,7 @@ err_exit(int nvm_errval, const char *msg, ...)
  * e.g. you might want to
  * close some files, depending
  * on your program.
- * see: err_exit()
+ * see: exitf()
  */
 func_t errhook(func_t ptr)
 {
@@ -632,7 +631,7 @@ xpledgex(const char *promises, const char *execpromises)
 	errno = 0;
 #ifdef __OpenBSD__
 	if (pledge(promises, execpromises) == -1)
-		err_exit(errno, "pledge");
+		exitf("pledge");
 #endif
 	reset_caller_errno(0);
 	return 0;
@@ -645,7 +644,7 @@ xunveilx(const char *path, const char *permissions)
 	errno = 0;
 #ifdef __OpenBSD__
 	if (pledge(promises, execpromises) == -1)
-		err_exit(errno, "pledge");
+		exitf("pledge");
 #endif
 	reset_caller_errno(0);
 	return 0;
diff --git a/util/libreboot-utils/lib/usage.c b/util/libreboot-utils/lib/usage.c
index 7c9fa34b..4ade2f9e 100644
--- a/util/libreboot-utils/lib/usage.c
+++ b/util/libreboot-utils/lib/usage.c
@@ -26,5 +26,5 @@ usage(void)
 	    util, util, util, util,
 	    util, util, util);
 
-	err_exit(EINVAL, "Too few arguments");
+	exitf("Too few arguments");
 }
diff --git a/util/libreboot-utils/lib/word.c b/util/libreboot-utils/lib/word.c
index 85e1d88b..45ac3d48 100644
--- a/util/libreboot-utils/lib/word.c
+++ b/util/libreboot-utils/lib/word.c
@@ -63,6 +63,6 @@ check_nvm_bound(size_t c, size_t p)
 	check_bin(p, "part number");
 
 	if (c >= NVM_WORDS)
-		err_exit(ECANCELED, "check_nvm_bound: out of bounds %lu",
+		exitf("check_nvm_bound: out of bounds %lu",
 		    (size_t)c);
 }
diff --git a/util/libreboot-utils/mkhtemp.c b/util/libreboot-utils/mkhtemp.c
index 65e637e9..ced8aa96 100644
--- a/util/libreboot-utils/mkhtemp.c
+++ b/util/libreboot-utils/mkhtemp.c
@@ -95,7 +95,7 @@ main(int argc, char *argv[])
 		    p > template && *--p == 'X'; xc++);
 
 		if (xc < 3) /* the gnu mktemp errs on less than 3 */
-			err_exit(EINVAL,
+			exitf(
 			"template must have 3 X or more on end (12+ advised");
 	}
 
@@ -109,21 +109,21 @@ main(int argc, char *argv[])
 	if (tmpdir != NULL) {
 		rp = realpath(tmpdir, resolved);
 		if (rp == NULL)
-			err_exit(errno, "%s", tmpdir);
+			exitf("%s", tmpdir);
 
 		tmpdir = resolved;
 	}
 
 	if (new_tmp_common(&fd, &s, type,
 	    tmpdir, template) < 0)
-		err_exit(errno, "%s", s);
+		exitf("%s", s);
 
 	xpledgex("stdio", NULL);
 
 	if (s == NULL)
-		err_exit(EFAULT, "bad string initialisation");
+		exitf("bad string initialisation");
 	if (*s == '\0')
-		err_exit(EFAULT, "empty string initialisation");
+		exitf("empty string initialisation");
 
 	slen(s, PATH_MAX, &len); /* Nullterminierung prüfen */
 	/* for good measure. (bonus: also re-checks length overflow) */
@@ -133,7 +133,7 @@ main(int argc, char *argv[])
 	return EXIT_SUCCESS;
 
 err_usage:
-	err_exit(EINVAL,
+	exitf(
 	    "usage: %s [-d] [-p dir] [template]\n", lbgetprogname());
 }
 
diff --git a/util/libreboot-utils/nvmutil.c b/util/libreboot-utils/nvmutil.c
index 26d15145..46e4a15c 100644
--- a/util/libreboot-utils/nvmutil.c
+++ b/util/libreboot-utils/nvmutil.c
@@ -6,6 +6,10 @@
  * These images configure your Intel Gigabit Ethernet adapter.
  */
 
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE 1
+#endif
+
 #include <sys/types.h>
 #include <sys/stat.h>
 
@@ -44,15 +48,15 @@ main(int argc, char *argv[])
 	xunveilx("/dev/urandom", "r");
 
 #ifndef S_ISREG
-	err_exit(ECANCELED,
+	exitf(
 	    "Can't determine file types (S_ISREG undefined)");
 #endif
 #if ((CHAR_BIT) != 8)
-	err_exit(ECANCELED, "Unsupported char size");
+	exitf("Unsupported char size");
 #endif
 
 	if ((x = xstart(argc, argv)) == NULL)
-		err_exit(ECANCELED, "NULL state on init");
+		exitf("NULL state on init");
 
 	/* parse user command */
 /* TODO: CHECK ACCESSES VIA xstatus() */
@@ -72,7 +76,7 @@ main(int argc, char *argv[])
 	xpledgex("stdio flock rpath wpath cpath", NULL);
 
 	if (cmd->run == NULL)
-		err_exit(errno, "Command not set");
+		exitf("Command not set");
 
 	sanitize_command_list();
 	open_gbe_file();
@@ -88,7 +92,7 @@ main(int argc, char *argv[])
 
 	exit_cleanup();
 	if (f->io_err_gbe_bin)
-		err_exit(EIO, "%s: error writing final file");
+		exitf("%s: error writing final file");
 
 	free_and_set_null(&f->tname);