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lbutils: don't use stack memory for path strings

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Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-04-21 06:39:50 +01:00
parent 7faf014a84
commit e097eb5483
4 changed files with 43 additions and 9 deletions
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util/libreboot-utils/lib/file.c
+15 -8
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@@ -521,6 +521,8 @@ fs_dirname_basename(const char *path,
char *buf = NULL;
char *slash;
size_t len;
const char *d = NULL;
const char *b = NULL;
errno = 0;
if (if_err(path == NULL || dir == NULL || base == NULL, EFAULT))
@@ -539,22 +541,27 @@ fs_dirname_basename(const char *path,
if (slash) {
*slash = '\0';
*dir = buf;
*base = slash + 1;
d = buf;
b = slash + 1;
if (**dir == '\0') {
(*dir)[0] = '/';
(*dir)[1] = '\0';
}
if (*d == '\0')
d = "/";
} else if (allow_relative) {
sdup(".", PATH_MAX, dir);
*base = buf;
d = ".";
b = buf;
} else {
free_and_set_null(&buf);
goto err;
}
if (dup_pair(dir, d, base, b) < 0) {
free_and_set_null(&buf);
goto err;
}
free_and_set_null(&buf);
reset_caller_errno(0);
return 0;
err: