Merge pull request #24803 from DaanDeMeyer/repart-copy-deny-list

repart: Don't descend into directories assigned to other partitions

src/basic/stat-util.c

@@ -15,6 +15,7 @@
 #include "fileio.h"
 #include "filesystems.h"
 #include "fs-util.h"
+#include "hash-funcs.h"
 #include "macro.h"
 #include "missing_fs.h"
 #include "missing_magic.h"
@@ -441,3 +442,20 @@ int statx_fallback(int dfd, const char *path, int flags, unsigned mask, struct s
 
         return 0;
 }
+
+void inode_hash_func(const struct stat *q, struct siphash *state) {
+        siphash24_compress(&q->st_dev, sizeof(q->st_dev), state);
+        siphash24_compress(&q->st_ino, sizeof(q->st_ino), state);
+}
+
+int inode_compare_func(const struct stat *a, const struct stat *b) {
+        int r;
+
+        r = CMP(a->st_dev, b->st_dev);
+        if (r != 0)
+                return r;
+
+        return CMP(a->st_ino, b->st_ino);
+}
+
+DEFINE_HASH_OPS_WITH_KEY_DESTRUCTOR(inode_hash_ops, struct stat, inode_hash_func, inode_compare_func, free);

src/basic/stat-util.h

@@ -11,6 +11,7 @@
 
 #include "macro.h"
 #include "missing_stat.h"
+#include "siphash24.h"
 
 int is_symlink(const char *path);
 int is_dir_full(int atfd, const char *fname, bool follow);
@@ -96,3 +97,7 @@ int statx_fallback(int dfd, const char *path, int flags, unsigned mask, struct s
                 struct new_statx nsx;           \
         } var
 #endif
+
+void inode_hash_func(const struct stat *q, struct siphash *state);
+int inode_compare_func(const struct stat *a, const struct stat *b);
+extern const struct hash_ops inode_hash_ops;