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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* node_compare.c
*
* Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
*/
#include "sqfsdiff.h"
int node_compare(sqfsdiff_t *sd, sqfs_tree_node_t *a, sqfs_tree_node_t *b)
{
char *path = sqfs_tree_node_get_path(a);
sqfs_tree_node_t *ait, *bit;
int ret, status = 0;
if (path == NULL) {
perror("constructing absolute file path");
return -1;
}
if (a->inode->base.type != b->inode->base.type) {
fprintf(stdout, "%s has a different type\n", path);
free(path);
return 1;
}
if (!(sd->compare_flags & COMPARE_NO_PERM)) {
if ((a->inode->base.mode & ~S_IFMT) !=
(b->inode->base.mode & ~S_IFMT)) {
fprintf(stdout, "%s has different permissions\n",
path);
status = 1;
}
}
if (!(sd->compare_flags & COMPARE_NO_OWNER)) {
if (a->uid != b->uid || a->gid != b->gid) {
fprintf(stdout, "%s has different ownership\n", path);
status = 1;
}
}
if (sd->compare_flags & COMPARE_TIMESTAMP) {
if (a->inode->base.mod_time != b->inode->base.mod_time) {
fprintf(stdout, "%s has a different timestamp\n", path);
status = 1;
}
}
if (sd->compare_flags & COMPARE_INODE_NUM) {
if (a->inode->base.inode_number !=
b->inode->base.inode_number) {
fprintf(stdout, "%s has a different inode number\n",
path);
status = 1;
}
}
switch (a->inode->base.type) {
case SQFS_INODE_SOCKET:
case SQFS_INODE_EXT_SOCKET:
case SQFS_INODE_FIFO:
case SQFS_INODE_EXT_FIFO:
break;
case SQFS_INODE_BDEV:
case SQFS_INODE_CDEV:
if (a->inode->data.dev.devno != b->inode->data.dev.devno) {
fprintf(stdout, "%s has different device number\n",
path);
status = 1;
}
break;
case SQFS_INODE_EXT_BDEV:
case SQFS_INODE_EXT_CDEV:
if (a->inode->data.dev_ext.devno !=
b->inode->data.dev_ext.devno) {
fprintf(stdout, "%s has different device number\n",
path);
status = 1;
}
break;
case SQFS_INODE_SLINK:
case SQFS_INODE_EXT_SLINK:
if (strcmp(a->inode->slink_target, b->inode->slink_target)) {
fprintf(stdout, "%s has a different link target\n",
path);
}
break;
case SQFS_INODE_DIR:
case SQFS_INODE_EXT_DIR:
ret = compare_dir_entries(sd, a, b);
if (ret < 0) {
status = -1;
break;
}
if (ret > 0)
status = 1;
free(path);
path = NULL;
ait = a->children;
bit = b->children;
while (ait != NULL && bit != NULL) {
ret = node_compare(sd, ait, bit);
if (ret < 0)
return -1;
if (ret > 0)
status = 1;
ait = ait->next;
bit = bit->next;
}
break;
case SQFS_INODE_FILE:
case SQFS_INODE_EXT_FILE:
ret = compare_files(sd, a->inode, b->inode, path);
if (ret < 0) {
status = -1;
} else if (ret > 0) {
fprintf(stdout, "regular file %s differs\n", path);
status = 1;
}
break;
default:
fprintf(stdout, "%s has unknown type, ignoring\n", path);
break;
}
free(path);
return status;
}
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