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util/nvmutil: use size_t for offsets in words

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size_t is generally the size of the address space, so
this is more reliable for our purposes; we're only
working on small buffers, but even so, it's a good
thing to do.

Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-03-06 13:19:21 +00:00
parent 32429f2c37
commit feee6a728f
1 changed files with 23 additions and 23 deletions
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util/nvmutil/nvmutil.c
+23 -23
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@@ -41,10 +41,10 @@ static void cmd_brick(void);
static void cmd_copy(void);
static void cmd_swap(void);
static int good_checksum(int);
static uint16_t word(int, int);
static void set_word(int, int, uint16_t);
static int get_word_pos(int, int);
static void check_bound(int, int);
static uint16_t word(size_t, int);
static void set_word(size_t, int, uint16_t);
static size_t get_word_pos(size_t, int);
static void check_bound(ssize_t, int);
static void write_gbe(void);
static void write_gbe_part(int);
static void usage(void);
@@ -454,7 +454,7 @@ check_read_or_die(const char *rpath, ssize_t rval, size_t rsize,
static int
write_mac_part(int partnum)
{
int w;
size_t w;
part = partnum;
if (!good_checksum(partnum))
@@ -492,7 +492,7 @@ cmd_dump(void)
static void
print_mac_address(int partnum)
{
int c;
size_t c;
for (c = 0; c < 3; c++) {
uint16_t val16 = word(c, partnum);
printf("%02x:%02x", val16 & 0xff, val16 >> 8);
@@ -506,12 +506,12 @@ print_mac_address(int partnum)
static void
hexdump(int partnum)
{
int c;
int row;
size_t c;
size_t row;
uint16_t val16;
for (row = 0; row < 8; row++) {
printf("%08x ", row << 4);
printf("%08lx ", row << 4);
for (c = 0; c < 8; c++) {
val16 = word((row << 3) + c, partnum);
if (c == 4)
@@ -525,7 +525,7 @@ hexdump(int partnum)
static void
cmd_setchecksum(void)
{
int c;
size_t c;
uint16_t val16 = 0;
for (c = 0; c < NVM_CHECKSUM_WORD; c++)
@@ -594,7 +594,7 @@ cmd_swap(void)
static int
good_checksum(int partnum)
{
int w;
size_t w;
uint16_t total = 0;
for (w = 0; w <= NVM_CHECKSUM_WORD; w++)
total += word(w, partnum);
@@ -610,22 +610,22 @@ good_checksum(int partnum)
}
static uint16_t
word(int pos16, int p)
word(size_t pos16, int p)
{
int pos;
size_t pos;
check_bound(pos16, p);
check_bound((ssize_t)pos16, p);
pos = get_word_pos(pos16, p);
return (uint16_t)buf[pos] | ((uint16_t)buf[pos + 1] << 8);
}
static void
set_word(int pos16, int p, uint16_t val16)
set_word(size_t pos16, int p, uint16_t val16)
{
int pos;
size_t pos;
check_bound(pos16, p);
check_bound((ssize_t)pos16, p);
pos = get_word_pos(pos16, p);
buf[pos++] = (uint8_t)(val16 & 0xff);
@@ -634,17 +634,17 @@ set_word(int pos16, int p, uint16_t val16)
part_modified[p] = 1;
}
static int
get_word_pos(int pos16, int p)
static size_t
get_word_pos(size_t pos16, int p)
{
int off = SIZE_4KB * p;
int pos = (pos16 << 1) + off;
size_t off = SIZE_4KB * p;
size_t pos = (pos16 << 1) + off;
return pos;
}
static void
check_bound(int c, int p)
check_bound(ssize_t c, int p)
{
/*
* NVM_SIZE assumed as the limit, because the
@@ -663,7 +663,7 @@ check_bound(int c, int p)
if ((p != 0) && (p != 1))
err(EINVAL, "check_bound: invalid partnum %d", p);
if ((c < 0) || (c >= (NVM_SIZE >> 1)))
err(EINVAL, "check_bound: out of bounds %d", c);
err(EINVAL, "check_bound: out of bounds %zd", c);
}
static void