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1b01cdbf2e
Codepaths to walk tree objects have been audited for integer overflows and hardened. * jk/tree-walk-overflow: tree-walk: harden make_traverse_path() length computations tree-walk: add a strbuf wrapper for make_traverse_path() tree-walk: accept a raw length for traverse_path_len() tree-walk: use size_t consistently tree-walk: drop oid from traverse_info setup_traverse_info(): stop copying oid
101 lines
3 KiB
C
101 lines
3 KiB
C
#ifndef TREE_WALK_H
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#define TREE_WALK_H
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#include "cache.h"
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struct name_entry {
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struct object_id oid;
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const char *path;
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int pathlen;
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unsigned int mode;
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};
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struct tree_desc {
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const void *buffer;
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struct name_entry entry;
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unsigned int size;
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};
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static inline const struct object_id *tree_entry_extract(struct tree_desc *desc, const char **pathp, unsigned short *modep)
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{
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*pathp = desc->entry.path;
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*modep = desc->entry.mode;
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return &desc->entry.oid;
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}
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static inline int tree_entry_len(const struct name_entry *ne)
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{
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return ne->pathlen;
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}
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/*
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* The _gently versions of these functions warn and return false on a
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* corrupt tree entry rather than dying,
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*/
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void update_tree_entry(struct tree_desc *);
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int update_tree_entry_gently(struct tree_desc *);
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void init_tree_desc(struct tree_desc *desc, const void *buf, unsigned long size);
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int init_tree_desc_gently(struct tree_desc *desc, const void *buf, unsigned long size);
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/*
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* Helper function that does both tree_entry_extract() and update_tree_entry()
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* and returns true for success
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*/
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int tree_entry(struct tree_desc *, struct name_entry *);
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int tree_entry_gently(struct tree_desc *, struct name_entry *);
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void *fill_tree_descriptor(struct repository *r,
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struct tree_desc *desc,
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const struct object_id *oid);
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struct traverse_info;
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typedef int (*traverse_callback_t)(int n, unsigned long mask, unsigned long dirmask, struct name_entry *entry, struct traverse_info *);
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int traverse_trees(struct index_state *istate, int n, struct tree_desc *t, struct traverse_info *info);
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enum get_oid_result get_tree_entry_follow_symlinks(struct repository *r, struct object_id *tree_oid, const char *name, struct object_id *result, struct strbuf *result_path, unsigned short *mode);
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struct traverse_info {
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const char *traverse_path;
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struct traverse_info *prev;
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const char *name;
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size_t namelen;
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unsigned mode;
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size_t pathlen;
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struct pathspec *pathspec;
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unsigned long df_conflicts;
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traverse_callback_t fn;
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void *data;
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int show_all_errors;
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};
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int get_tree_entry(struct repository *, const struct object_id *, const char *, struct object_id *, unsigned short *);
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char *make_traverse_path(char *path, size_t pathlen, const struct traverse_info *info,
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const char *name, size_t namelen);
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void strbuf_make_traverse_path(struct strbuf *out,
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const struct traverse_info *info,
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const char *name, size_t namelen);
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void setup_traverse_info(struct traverse_info *info, const char *base);
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static inline size_t traverse_path_len(const struct traverse_info *info,
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size_t namelen)
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{
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return st_add(info->pathlen, namelen);
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}
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/* in general, positive means "kind of interesting" */
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enum interesting {
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all_entries_not_interesting = -1, /* no, and no subsequent entries will be either */
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entry_not_interesting = 0,
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entry_interesting = 1,
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all_entries_interesting = 2 /* yes, and all subsequent entries will be */
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};
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enum interesting tree_entry_interesting(struct index_state *istate,
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const struct name_entry *,
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struct strbuf *, int,
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const struct pathspec *ps);
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#endif
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