coja/lbmk
1
0
Fork 0
mirror of https://codeberg.org/libreboot/lbmk.git synced 2026-07-14 15:29:35 +02:00
Code Issues Packages Projects Releases Wiki Activity

util/nvmutil: portable memcpy/memcmp

Browse Source 
Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-03-16 16:27:56 +00:00
parent 612783bc24
commit 5927c175df
1 changed files with 44 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files
util/nvmutil/nvmutil.c
+44 -12
View File
@@ -479,6 +479,10 @@ static char *x_c_strrchr(const char *s, int c);
static int x_i_rename(const char *src, const char *dst);
static char *x_c_tmpdir(void);
static int x_i_close(int fd);
static void *x_v_memcpy(void *dst,
const void *src, unsigned long n);
static int x_i_memcmp(const void *a,
const void *b, unsigned long n);
/*
* Sizes in bytes:
@@ -1119,7 +1123,7 @@ copy_gbe(void)
if (r < 0)
err(errno, "%s: read failed (cmp)", tname);
if (memcmp(buf, bufcmp, gbe_file_size) != 0)
if (x_i_memcmp(buf, bufcmp, gbe_file_size) != 0)
err(errno, "%s: %s: read contents differ (pre-test)",
fname, tname);
@@ -1136,7 +1140,7 @@ copy_gbe(void)
if (gbe_file_size == SIZE_8KB)
return;
memcpy(buf + (unsigned long)GBE_PART_SIZE,
x_v_memcpy(buf + (unsigned long)GBE_PART_SIZE,
buf + (unsigned long)(gbe_file_size >> 1),
(unsigned long)GBE_PART_SIZE);
}
@@ -1558,17 +1562,17 @@ hexdump(unsigned long partnum)
static void
cmd_helper_swap(void)
{
memcpy(
x_v_memcpy(
buf + (unsigned long)GBE_WORK_SIZE,
buf,
GBE_PART_SIZE);
memcpy(
x_v_memcpy(
buf,
buf + (unsigned long)GBE_PART_SIZE,
GBE_PART_SIZE);
memcpy(
x_v_memcpy(
buf + (unsigned long)GBE_PART_SIZE,
buf + (unsigned long)GBE_WORK_SIZE,
GBE_PART_SIZE);
@@ -1580,7 +1584,7 @@ cmd_helper_swap(void)
static void
cmd_helper_copy(void)
{
memcpy(
x_v_memcpy(
buf + (unsigned long)((part ^ 1) * GBE_PART_SIZE),
buf + (unsigned long)(part * GBE_PART_SIZE),
GBE_PART_SIZE);
@@ -1904,7 +1908,7 @@ check_written_part(unsigned long p)
rw_check_err_read[p] = io_err_gbe = 1;
else if ((unsigned long)r != gbe_rw_size)
rw_check_partial_read[p] = io_err_gbe = 1;
else if (memcmp(mem_offset, pad, gbe_rw_size) != 0)
else if (x_i_memcmp(mem_offset, pad, gbe_rw_size) != 0)
rw_check_bad_part[p] = io_err_gbe = 1;
if (rw_check_err_read[p] ||
@@ -2125,7 +2129,7 @@ fsync_dir(const char *path)
if (dirbuf == NULL)
goto err_fsync_dir;
memcpy(dirbuf, path, pathlen + 1);
x_v_memcpy(dirbuf, path, pathlen + 1);
slash = x_c_strrchr(dirbuf, '/');
if (slash != NULL) {
@@ -2922,17 +2926,17 @@ new_tmpfile(int *fd, int local, const char *path)
*dest = '.'; /* hidden file */
memcpy(dest + (unsigned long)1, tmpname, tmpname_len);
x_v_memcpy(dest + (unsigned long)1, tmpname, tmpname_len);
memcpy(dest + (unsigned long)1 + tmpname_len,
x_v_memcpy(dest + (unsigned long)1 + tmpname_len,
default_tmpname, tmpdir_len);
} else {
memcpy(dest, base, tmpdir_len);
x_v_memcpy(dest, base, tmpdir_len);
dest[tmpdir_len] = '/';
memcpy(dest + tmpdir_len + 1, tmpname, tmpname_len);
x_v_memcpy(dest + tmpdir_len + 1, tmpname, tmpname_len);
}
dest[tmppath_len] = '\0';
@@ -3117,3 +3121,31 @@ x_i_close(int fd)
return r;
}
static void *
x_v_memcpy(void *dst, const void *src, unsigned long n)
{
unsigned char *d = (unsigned char *)dst;
const unsigned char *s = (const unsigned char *)src;
while (n--)
*d++ = *s++;
return dst;
}
static int
x_i_memcmp(const void *a, const void *b, unsigned long n)
{
const unsigned char *pa = (const unsigned char *)a;
const unsigned char *pb = (const unsigned char *)b;
while (n--) {
if (*pa != *pb)
return *pa - *pb;
pa++;
pb++;
}
return 0;
}