mkfs.cramfs: Improve file size check

Check st.st_size (off_t) for actual file size instead of the possibly
already truncated entry->size (unsigned int) value. Otherwise files
larger than 4 GB might be silently truncated.

Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>

diff --git a/disk-utils/mkfs.cramfs.c b/disk-utils/mkfs.cramfs.c
index 2d57900b7744736b50950c26a2fed4bd4425f4e0..13c93e3a433d9194f9cd7e69ab5f68cd7aa3a134 100644 (file)
--- a/disk-utils/mkfs.cramfs.c
+++ b/disk-utils/mkfs.cramfs.c
@@ -363,7 +363,7 @@ static unsigned int parse_directory(struct entry *root_entry, const char *name,
                        entry->size = parse_directory(root_entry, path, &entry->child, fslen_ub);
                } else if (S_ISREG(st.st_mode)) {
                        entry->path = xstrdup(path);
-                       if (entry->size >= (1 << CRAMFS_SIZE_WIDTH)) {
+                       if (st.st_size >= (1 << CRAMFS_SIZE_WIDTH)) {
                                warn_size = 1;
                                entry->size = (1 << CRAMFS_SIZE_WIDTH) - 1;
                        }