Convert "struct cache_entry *" to "const ..." wherever possible

I attempted to make index_state->cache[] a "const struct cache_entry **"
to find out how existing entries in index are modified and where. The
question I have is what do we do if we really need to keep track of on-disk
changes in the index. The result is

- diff-lib.c: setting CE_UPTODATE

- name-hash.c: setting CE_HASHED

- preload-index.c, read-cache.c, unpack-trees.c and
builtin/update-index: obvious

- entry.c: write_entry() may refresh the checked out entry via
fill_stat_cache_info(). This causes "non-const struct cache_entry
*" in builtin/apply.c, builtin/checkout-index.c and
builtin/checkout.c

- builtin/ls-files.c: --with-tree changes stagemask and may set
CE_UPDATE

Of these, write_entry() and its call sites are probably most
interesting because it modifies on-disk info. But this is stat info
and can be retrieved via refresh, at least for porcelain
commands. Other just uses ce_flags for local purposes.

So, keeping track of "dirty" entries is just a matter of setting a
flag in index modification functions exposed by read-cache.c. Except
unpack-trees, the rest of the code base does not do anything funny
behind read-cache's back.

The actual patch is less valueable than the summary above. But if
anyone wants to re-identify the above sites. Applying this patch, then
this:

diff --git a/cache.h b/cache.h
index 430d021..1692891 100644
--- a/cache.h
+++ b/cache.h
@@ -267,7 +267,7 @@ static inline unsigned int canon_mode(unsigned int mode)
#define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1)

struct index_state {
-	struct cache_entry **cache;
+	const struct cache_entry **cache;
unsigned int version;
unsigned int cache_nr, cache_alloc, cache_changed;
struct string_list *resolve_undo;

will help quickly identify them without bogus warnings.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/apply.c b/builtin/apply.c
index 0e9b631db6db422b1e938d6168b608e0a2ae8618..023bb3aada5269d8c7cfa4cd095bfeb6cc610e66 100644 (file)
--- a/builtin/apply.c
+++ b/builtin/apply.c
@@ -2999,7 +2999,7 @@ static int read_blob_object(struct strbuf *buf, const unsigned char *sha1, unsig
        return 0;
 }
 
-static int read_file_or_gitlink(struct cache_entry *ce, struct strbuf *buf)
+static int read_file_or_gitlink(const struct cache_entry *ce, struct strbuf *buf)
 {
        if (!ce)
                return 0;
@@ -3117,7 +3117,7 @@ static struct patch *previous_patch(struct patch *patch, int *gone)
        return previous;
 }
 
-static int verify_index_match(struct cache_entry *ce, struct stat *st)
+static int verify_index_match(const struct cache_entry *ce, struct stat *st)
 {
        if (S_ISGITLINK(ce->ce_mode)) {
                if (!S_ISDIR(st->st_mode))
@@ -3130,7 +3130,7 @@ static int verify_index_match(struct cache_entry *ce, struct stat *st)
 #define SUBMODULE_PATCH_WITHOUT_INDEX 1
 
 static int load_patch_target(struct strbuf *buf,
-                            struct cache_entry *ce,
+                            const struct cache_entry *ce,
                             struct stat *st,
                             const char *name,
                             unsigned expected_mode)
@@ -3160,7 +3160,8 @@ static int load_patch_target(struct strbuf *buf,
  * we read from the result of a previous diff.
  */
 static int load_preimage(struct image *image,
-                        struct patch *patch, struct stat *st, struct cache_entry *ce)
+                        struct patch *patch, struct stat *st,
+                        const struct cache_entry *ce)
 {
        struct strbuf buf = STRBUF_INIT;
        size_t len;
@@ -3273,7 +3274,7 @@ static int load_current(struct image *image, struct patch *patch)
 }
 
 static int try_threeway(struct image *image, struct patch *patch,
-                       struct stat *st, struct cache_entry *ce)
+                       struct stat *st, const struct cache_entry *ce)
 {
        unsigned char pre_sha1[20], post_sha1[20], our_sha1[20];
        struct strbuf buf = STRBUF_INIT;
@@ -3343,7 +3344,7 @@ static int try_threeway(struct image *image, struct patch *patch,
        return 0;
 }
 
-static int apply_data(struct patch *patch, struct stat *st, struct cache_entry *ce)
+static int apply_data(struct patch *patch, struct stat *st, const struct cache_entry *ce)
 {
        struct image image;
 

diff --git a/builtin/checkout.c b/builtin/checkout.c
index 3be00188216f503ea1f9269acd312aebdb72a0fa..69f9efa757f2496a8dc5674e2c35d3213457c274 100644 (file)
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -97,7 +97,7 @@ static int read_tree_some(struct tree *tree, const char **pathspec)
        return 0;
 }
 
-static int skip_same_name(struct cache_entry *ce, int pos)
+static int skip_same_name(const struct cache_entry *ce, int pos)
 {
        while (++pos < active_nr &&
               !strcmp(active_cache[pos]->name, ce->name))
@@ -105,7 +105,7 @@ static int skip_same_name(struct cache_entry *ce, int pos)
        return pos;
 }
 
-static int check_stage(int stage, struct cache_entry *ce, int pos)
+static int check_stage(int stage, const struct cache_entry *ce, int pos)
 {
        while (pos < active_nr &&
               !strcmp(active_cache[pos]->name, ce->name)) {
@@ -119,7 +119,7 @@ static int check_stage(int stage, struct cache_entry *ce, int pos)
                return error(_("path '%s' does not have their version"), ce->name);
 }
 
-static int check_stages(unsigned stages, struct cache_entry *ce, int pos)
+static int check_stages(unsigned stages, const struct cache_entry *ce, int pos)
 {
        unsigned seen = 0;
        const char *name = ce->name;
@@ -321,7 +321,7 @@ static int checkout_paths(const struct checkout_opts *opts,
 
        /* Any unmerged paths? */
        for (pos = 0; pos < active_nr; pos++) {
-               struct cache_entry *ce = active_cache[pos];
+               const struct cache_entry *ce = active_cache[pos];
                if (ce->ce_flags & CE_MATCHED) {
                        if (!ce_stage(ce))
                                continue;

diff --git a/builtin/clean.c b/builtin/clean.c
index 04e396b17acc2443a663dd085ef812c3c2746d27..e344137ef2568efb29964d4758c60b0abf35f743 100644 (file)
--- a/builtin/clean.c
+++ b/builtin/clean.c
@@ -221,7 +221,7 @@ int cmd_clean(int argc, const char **argv, const char *prefix)
                struct dir_entry *ent = dir.entries[i];
                int len, pos;
                int matches = 0;
-               struct cache_entry *ce;
+               const struct cache_entry *ce;
                struct stat st;
 
                /*

diff --git a/builtin/commit.c b/builtin/commit.c
index 6b693c16d8842b70b0e1c7bd7df5095947ed0a64..c9cbb811b031096a8e448567510f539c56693612 100644 (file)
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -205,7 +205,7 @@ static int list_paths(struct string_list *list, const char *with_tree,
        }
 
        for (i = 0; i < active_nr; i++) {
-               struct cache_entry *ce = active_cache[i];
+               const struct cache_entry *ce = active_cache[i];
                struct string_list_item *item;
 
                if (ce->ce_flags & CE_UPDATE)

diff --git a/builtin/grep.c b/builtin/grep.c
index 159e65d47a41b56634bc3fb480f9c051d40e692c..0223d701a6cb2824733f72fc04d298a9c8c87020 100644 (file)
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -376,7 +376,7 @@ static int grep_cache(struct grep_opt *opt, const struct pathspec *pathspec, int
        read_cache();
 
        for (nr = 0; nr < active_nr; nr++) {
-               struct cache_entry *ce = active_cache[nr];
+               const struct cache_entry *ce = active_cache[nr];
                if (!S_ISREG(ce->ce_mode))
                        continue;
                if (!match_pathspec_depth(pathspec, ce->name, ce_namelen(ce), 0, NULL))

diff --git a/builtin/ls-files.c b/builtin/ls-files.c
index 3a410c35d99ae030a75c4d3065b7023467e0d1c6..80fff23ad959ec7d6ed3c3fcc34faf77c3816459 100644 (file)
--- a/builtin/ls-files.c
+++ b/builtin/ls-files.c
@@ -127,7 +127,7 @@ static void show_killed_files(struct dir_struct *dir)
        }
 }
 
-static void show_ce_entry(const char *tag, struct cache_entry *ce)
+static void show_ce_entry(const char *tag, const struct cache_entry *ce)
 {
        int len = max_prefix_len;
 
@@ -165,7 +165,7 @@ static void show_ce_entry(const char *tag, struct cache_entry *ce)
        }
        write_name(ce->name, ce_namelen(ce));
        if (debug_mode) {
-               struct stat_data *sd = &ce->ce_stat_data;
+               const struct stat_data *sd = &ce->ce_stat_data;
 
                printf("  ctime: %d:%d\n", sd->sd_ctime.sec, sd->sd_ctime.nsec);
                printf("  mtime: %d:%d\n", sd->sd_mtime.sec, sd->sd_mtime.nsec);
@@ -203,7 +203,7 @@ static void show_ru_info(void)
        }
 }
 
-static int ce_excluded(struct dir_struct *dir, struct cache_entry *ce)
+static int ce_excluded(struct dir_struct *dir, const struct cache_entry *ce)
 {
        int dtype = ce_to_dtype(ce);
        return is_excluded(dir, ce->name, &dtype);
@@ -223,7 +223,7 @@ static void show_files(struct dir_struct *dir)
        }
        if (show_cached || show_stage) {
                for (i = 0; i < active_nr; i++) {
-                       struct cache_entry *ce = active_cache[i];
+                       const struct cache_entry *ce = active_cache[i];
                        if ((dir->flags & DIR_SHOW_IGNORED) &&
                            !ce_excluded(dir, ce))
                                continue;
@@ -237,7 +237,7 @@ static void show_files(struct dir_struct *dir)
        }
        if (show_deleted || show_modified) {
                for (i = 0; i < active_nr; i++) {
-                       struct cache_entry *ce = active_cache[i];
+                       const struct cache_entry *ce = active_cache[i];
                        struct stat st;
                        int err;
                        if ((dir->flags & DIR_SHOW_IGNORED) &&
@@ -273,7 +273,7 @@ static void prune_cache(const char *prefix)
        last = active_nr;
        while (last > first) {
                int next = (last + first) >> 1;
-               struct cache_entry *ce = active_cache[next];
+               const struct cache_entry *ce = active_cache[next];
                if (!strncmp(ce->name, prefix, max_prefix_len)) {
                        first = next+1;
                        continue;

diff --git a/builtin/merge-index.c b/builtin/merge-index.c
index be5e514324aba1d50d8afe653dd72ccc5db060d8..b416d928492c43e78dc7ac0b3bd1d7a99abfe78b 100644 (file)
--- a/builtin/merge-index.c
+++ b/builtin/merge-index.c
@@ -16,7 +16,7 @@ static int merge_entry(int pos, const char *path)
                die("git merge-index: %s not in the cache", path);
        found = 0;
        do {
-               struct cache_entry *ce = active_cache[pos];
+               const struct cache_entry *ce = active_cache[pos];
                int stage = ce_stage(ce);
 
                if (strcmp(ce->name, path))
@@ -58,7 +58,7 @@ static void merge_all(void)
 {
        int i;
        for (i = 0; i < active_nr; i++) {
-               struct cache_entry *ce = active_cache[i];
+               const struct cache_entry *ce = active_cache[i];
                if (!ce_stage(ce))
                        continue;
                i += merge_entry(i, ce->name)-1;

diff --git a/builtin/merge.c b/builtin/merge.c
index 2ebe732896c1b3bfd920941b5182b793468c0afe..74c0746a93a249ff3c48401f040d8f1396d656f0 100644 (file)
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -889,7 +889,7 @@ static int suggest_conflicts(int renormalizing)
                die_errno(_("Could not open '%s' for writing"), filename);
        fprintf(fp, "\nConflicts:\n");
        for (pos = 0; pos < active_nr; pos++) {
-               struct cache_entry *ce = active_cache[pos];
+               const struct cache_entry *ce = active_cache[pos];
 
                if (ce_stage(ce)) {
                        fprintf(fp, "\t%s\n", ce->name);

diff --git a/builtin/rm.c b/builtin/rm.c
index 06025a2e751fbc2b2de3b024919c381cd2176c51..18916e022a2189a477927f0f351f63dd3b6fe695 100644 (file)
--- a/builtin/rm.c
+++ b/builtin/rm.c
@@ -67,7 +67,7 @@ static int check_submodules_use_gitfiles(void)
        for (i = 0; i < list.nr; i++) {
                const char *name = list.entry[i].name;
                int pos;
-               struct cache_entry *ce;
+               const struct cache_entry *ce;
                struct stat st;
 
                pos = cache_name_pos(name, strlen(name));
@@ -120,7 +120,7 @@ static int check_local_mod(unsigned char *head, int index_only)
        for (i = 0; i < list.nr; i++) {
                struct stat st;
                int pos;
-               struct cache_entry *ce;
+               const struct cache_entry *ce;
                const char *name = list.entry[i].name;
                unsigned char sha1[20];
                unsigned mode;
@@ -321,7 +321,7 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
        seen = xcalloc(i, 1);
 
        for (i = 0; i < active_nr; i++) {
-               struct cache_entry *ce = active_cache[i];
+               const struct cache_entry *ce = active_cache[i];
                if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen))
                        continue;
                ALLOC_GROW(list.entry, list.nr + 1, list.alloc);

diff --git a/builtin/update-index.c b/builtin/update-index.c
index 5c7762eef404e7ea21d88991a81407f1cb99f306..c3179815164c1ba2b39f3f57690c607dfc3ea0b6 100644 (file)
--- a/builtin/update-index.c
+++ b/builtin/update-index.c
@@ -83,7 +83,7 @@ static int process_lstat_error(const char *path, int err)
        return error("lstat(\"%s\"): %s", path, strerror(errno));
 }
 
-static int add_one_path(struct cache_entry *old, const char *path, int len, struct stat *st)
+static int add_one_path(const struct cache_entry *old, const char *path, int len, struct stat *st)
 {
        int option, size;
        struct cache_entry *ce;
@@ -142,7 +142,7 @@ static int process_directory(const char *path, int len, struct stat *st)
 
        /* Exact match: file or existing gitlink */
        if (pos >= 0) {
-               struct cache_entry *ce = active_cache[pos];
+               const struct cache_entry *ce = active_cache[pos];
                if (S_ISGITLINK(ce->ce_mode)) {
 
                        /* Do nothing to the index if there is no HEAD! */
@@ -158,7 +158,7 @@ static int process_directory(const char *path, int len, struct stat *st)
        /* Inexact match: is there perhaps a subdirectory match? */
        pos = -pos-1;
        while (pos < active_nr) {
-               struct cache_entry *ce = active_cache[pos++];
+               const struct cache_entry *ce = active_cache[pos++];
 
                if (strncmp(ce->name, path, len))
                        break;
@@ -183,7 +183,7 @@ static int process_path(const char *path)
 {
        int pos, len;
        struct stat st;
-       struct cache_entry *ce;
+       const struct cache_entry *ce;
 
        len = strlen(path);
        if (has_symlink_leading_path(path, len))
@@ -448,7 +448,7 @@ static int unresolve_one(const char *path)
                /* already merged */
                pos = unmerge_cache_entry_at(pos);
                if (pos < active_nr) {
-                       struct cache_entry *ce = active_cache[pos];
+                       const struct cache_entry *ce = active_cache[pos];
                        if (ce_stage(ce) &&
                            ce_namelen(ce) == namelen &&
                            !memcmp(ce->name, path, namelen))
@@ -462,7 +462,7 @@ static int unresolve_one(const char *path)
                 */
                pos = -pos-1;
                if (pos < active_nr) {
-                       struct cache_entry *ce = active_cache[pos];
+                       const struct cache_entry *ce = active_cache[pos];
                        if (ce_namelen(ce) == namelen &&
                            !memcmp(ce->name, path, namelen)) {
                                fprintf(stderr,
@@ -558,7 +558,7 @@ static int do_reupdate(int ac, const char **av,
                has_head = 0;
  redo:
        for (pos = 0; pos < active_nr; pos++) {
-               struct cache_entry *ce = active_cache[pos];
+               const struct cache_entry *ce = active_cache[pos];
                struct cache_entry *old = NULL;
                int save_nr;
 

diff --git a/cache-tree.c b/cache-tree.c
index 37e4d008b59420338ce97f1b2cf2eb660dab8a34..0bbec432165874bd36b1f220301de7f1363626dc 100644 (file)
--- a/cache-tree.c
+++ b/cache-tree.c
@@ -149,7 +149,7 @@ void cache_tree_invalidate_path(struct cache_tree *it, const char *path)
                cache_tree_invalidate_path(down->cache_tree, slash + 1);
 }
 
-static int verify_cache(struct cache_entry **cache,
+static int verify_cache(const struct cache_entry * const *cache,
                        int entries, int flags)
 {
        int i, funny;
@@ -158,7 +158,7 @@ static int verify_cache(struct cache_entry **cache,
        /* Verify that the tree is merged */
        funny = 0;
        for (i = 0; i < entries; i++) {
-               struct cache_entry *ce = cache[i];
+               const struct cache_entry *ce = cache[i];
                if (ce_stage(ce)) {
                        if (silent)
                                return -1;
@@ -234,7 +234,7 @@ int cache_tree_fully_valid(struct cache_tree *it)
 }
 
 static int update_one(struct cache_tree *it,
-                     struct cache_entry **cache,
+                     const struct cache_entry * const *cache,
                      int entries,
                      const char *base,
                      int baselen,
@@ -265,7 +265,7 @@ static int update_one(struct cache_tree *it,
         */
        i = 0;
        while (i < entries) {
-               struct cache_entry *ce = cache[i];
+               const struct cache_entry *ce = cache[i];
                struct cache_tree_sub *sub;
                const char *path, *slash;
                int pathlen, sublen, subcnt, subskip;
@@ -312,7 +312,7 @@ static int update_one(struct cache_tree *it,
 
        i = 0;
        while (i < entries) {
-               struct cache_entry *ce = cache[i];
+               const struct cache_entry *ce = cache[i];
                struct cache_tree_sub *sub;
                const char *path, *slash;
                int pathlen, entlen;
@@ -397,7 +397,7 @@ static int update_one(struct cache_tree *it,
 }
 
 int cache_tree_update(struct cache_tree *it,
-                     struct cache_entry **cache,
+                     const struct cache_entry * const *cache,
                      int entries,
                      int flags)
 {
@@ -599,8 +599,8 @@ int write_cache_as_tree(unsigned char *sha1, int flags, const char *prefix)
        was_valid = cache_tree_fully_valid(active_cache_tree);
        if (!was_valid) {
                if (cache_tree_update(active_cache_tree,
-                                     active_cache, active_nr,
-                                     flags) < 0)
+                                     (const struct cache_entry * const *)active_cache,
+                                     active_nr, flags) < 0)
                        return WRITE_TREE_UNMERGED_INDEX;
                if (0 <= newfd) {
                        if (!write_cache(newfd, active_cache, active_nr) &&
@@ -701,5 +701,6 @@ int update_main_cache_tree(int flags)
        if (!the_index.cache_tree)
                the_index.cache_tree = cache_tree();
        return cache_tree_update(the_index.cache_tree,
-                                the_index.cache, the_index.cache_nr, flags);
+                                (const struct cache_entry * const *)the_index.cache,
+                                the_index.cache_nr, flags);
 }

diff --git a/cache-tree.h b/cache-tree.h
index 55d0f59f2b7a42b40fe4be32297b56656206983d..f1923ad1e9ddd3ad9b77a436e66ad083843094a0 100644 (file)
--- a/cache-tree.h
+++ b/cache-tree.h
@@ -30,7 +30,7 @@ void cache_tree_write(struct strbuf *, struct cache_tree *root);
 struct cache_tree *cache_tree_read(const char *buffer, unsigned long size);
 
 int cache_tree_fully_valid(struct cache_tree *);
-int cache_tree_update(struct cache_tree *, struct cache_entry **, int, int);
+int cache_tree_update(struct cache_tree *, const struct cache_entry * const *, int, int);
 
 int update_main_cache_tree(int);
 

diff --git a/cache.h b/cache.h
index dd0fb33a1520edf2a243555474d1875818294598..430d021a2a60d1156a4e460862c01eb90b5725b2 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -476,7 +476,7 @@ extern int remove_file_from_index(struct index_state *, const char *path);
 extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
 extern int add_file_to_index(struct index_state *, const char *path, int flags);
 extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
-extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
+extern int ce_same_name(const struct cache_entry *a, const struct cache_entry *b);
 extern int index_name_is_other(const struct index_state *, const char *, int);
 extern void *read_blob_data_from_index(struct index_state *, const char *, unsigned long *);
 

diff --git a/diff.c b/diff.c
index 208094f6b7d8b6e18459fc1cd57ac8554723d8d4..126abbf6d3da633c37115c0a5b1a81d0962bf820 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -2586,7 +2586,7 @@ void fill_filespec(struct diff_filespec *spec, const unsigned char *sha1,
  */
 static int reuse_worktree_file(const char *name, const unsigned char *sha1, int want_file)
 {
-       struct cache_entry *ce;
+       const struct cache_entry *ce;
        struct stat st;
        int pos, len;
 

diff --git a/dir.c b/dir.c
index 897c87403e978ab2123ce088cf2d3265e21d7dde..bb1f4e4295e2dfd07e8a975495b8348c1b299f09 100644 (file)
--- a/dir.c
+++ b/dir.c
@@ -933,7 +933,7 @@ enum exist_status {
  */
 static enum exist_status directory_exists_in_index_icase(const char *dirname, int len)
 {
-       struct cache_entry *ce = index_name_exists(&the_index, dirname, len + 1, ignore_case);
+       const struct cache_entry *ce = index_name_exists(&the_index, dirname, len + 1, ignore_case);
        unsigned char endchar;
 
        if (!ce)
@@ -977,7 +977,7 @@ static enum exist_status directory_exists_in_index(const char *dirname, int len)
        if (pos < 0)
                pos = -pos-1;
        while (pos < active_nr) {
-               struct cache_entry *ce = active_cache[pos++];
+               const struct cache_entry *ce = active_cache[pos++];
                unsigned char endchar;
 
                if (strncmp(ce->name, dirname, len))
@@ -1115,7 +1115,7 @@ static int exclude_matches_pathspec(const char *path, int len,
 static int get_index_dtype(const char *path, int len)
 {
        int pos;
-       struct cache_entry *ce;
+       const struct cache_entry *ce;
 
        ce = cache_name_exists(path, len, 0);
        if (ce) {

diff --git a/entry.c b/entry.c
index d7c131d45309a496714221616244a70569155913..c6f7fd7d825e1222f0ba70a66d9f462277257fae 100644 (file)
--- a/entry.c
+++ b/entry.c
@@ -79,7 +79,7 @@ static int create_file(const char *path, unsigned int mode)
        return open(path, O_WRONLY | O_CREAT | O_EXCL, mode);
 }
 
-static void *read_blob_entry(struct cache_entry *ce, unsigned long *size)
+static void *read_blob_entry(const struct cache_entry *ce, unsigned long *size)
 {
        enum object_type type;
        void *new = read_sha1_file(ce->sha1, &type, size);
@@ -92,7 +92,7 @@ static void *read_blob_entry(struct cache_entry *ce, unsigned long *size)
        return NULL;
 }
 
-static int open_output_fd(char *path, struct cache_entry *ce, int to_tempfile)
+static int open_output_fd(char *path, const struct cache_entry *ce, int to_tempfile)
 {
        int symlink = (ce->ce_mode & S_IFMT) != S_IFREG;
        if (to_tempfile) {
@@ -115,7 +115,7 @@ static int fstat_output(int fd, const struct checkout *state, struct stat *st)
        return 0;
 }
 
-static int streaming_write_entry(struct cache_entry *ce, char *path,
+static int streaming_write_entry(const struct cache_entry *ce, char *path,
                                 struct stream_filter *filter,
                                 const struct checkout *state, int to_tempfile,
                                 int *fstat_done, struct stat *statbuf)
@@ -136,7 +136,8 @@ static int streaming_write_entry(struct cache_entry *ce, char *path,
        return result;
 }
 
-static int write_entry(struct cache_entry *ce, char *path, const struct checkout *state, int to_tempfile)
+static int write_entry(struct cache_entry *ce,
+                      char *path, const struct checkout *state, int to_tempfile)
 {
        unsigned int ce_mode_s_ifmt = ce->ce_mode & S_IFMT;
        int fd, ret, fstat_done = 0;
@@ -233,7 +234,8 @@ static int check_path(const char *path, int len, struct stat *st, int skiplen)
        return lstat(path, st);
 }
 
-int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath)
+int checkout_entry(struct cache_entry *ce,
+                  const struct checkout *state, char *topath)
 {
        static char path[PATH_MAX + 1];
        struct stat st;

diff --git a/merge-recursive.c b/merge-recursive.c
index ea9dbd307c60a16f290b44964c386e566b6bc7e3..f95933b0aacce84a8b911634e5c40d5e937a322b 100644 (file)
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -251,7 +251,7 @@ struct tree *write_tree_from_memory(struct merge_options *o)
                int i;
                fprintf(stderr, "BUG: There are unmerged index entries:\n");
                for (i = 0; i < active_nr; i++) {
-                       struct cache_entry *ce = active_cache[i];
+                       const struct cache_entry *ce = active_cache[i];
                        if (ce_stage(ce))
                                fprintf(stderr, "BUG: %d %.*s\n", ce_stage(ce),
                                        (int)ce_namelen(ce), ce->name);
@@ -264,7 +264,8 @@ struct tree *write_tree_from_memory(struct merge_options *o)
 
        if (!cache_tree_fully_valid(active_cache_tree) &&
            cache_tree_update(active_cache_tree,
-                             active_cache, active_nr, 0) < 0)
+                             (const struct cache_entry * const *)active_cache,
+                             active_nr, 0) < 0)
                die(_("error building trees"));
 
        result = lookup_tree(active_cache_tree->sha1);
@@ -339,7 +340,7 @@ static struct string_list *get_unmerged(void)
        for (i = 0; i < active_nr; i++) {
                struct string_list_item *item;
                struct stage_data *e;
-               struct cache_entry *ce = active_cache[i];
+               const struct cache_entry *ce = active_cache[i];
                if (!ce_stage(ce))
                        continue;
 

diff --git a/pathspec.c b/pathspec.c
index 284f3970a31eb86a121712267e36ff162452590d..6ea0867493ad3e8cfd613dd57fa5ac9649507b47 100644 (file)
--- a/pathspec.c
+++ b/pathspec.c
@@ -32,7 +32,7 @@ void add_pathspec_matches_against_index(const char **pathspec,
        if (!num_unmatched)
                return;
        for (i = 0; i < active_nr; i++) {
-               struct cache_entry *ce = active_cache[i];
+               const struct cache_entry *ce = active_cache[i];
                match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen);
        }
 }
@@ -67,7 +67,7 @@ const char *check_path_for_gitlink(const char *path)
 {
        int i, path_len = strlen(path);
        for (i = 0; i < active_nr; i++) {
-               struct cache_entry *ce = active_cache[i];
+               const struct cache_entry *ce = active_cache[i];
                if (S_ISGITLINK(ce->ce_mode)) {
                        int ce_len = ce_namelen(ce);
                        if (path_len <= ce_len || path[ce_len] != '/' ||

diff --git a/read-cache.c b/read-cache.c
index d5201f9b06c3f5ac53b8a6f5396fbf3392f1b3b2..d4474eab7b6f9ffbfb4e7da23d284c936f488276 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -722,7 +722,7 @@ struct cache_entry *make_cache_entry(unsigned int mode,
        return ce;
 }
 
-int ce_same_name(struct cache_entry *a, struct cache_entry *b)
+int ce_same_name(const struct cache_entry *a, const struct cache_entry *b)
 {
        int len = ce_namelen(a);
        return ce_namelen(b) == len && !memcmp(a->name, b->name, len);

diff --git a/rerere.c b/rerere.c
index 98e3e294d0dc295290b7b891a834186c0791e43a..6fde8f94c27d5a3a196098af0f4716e27566dae5 100644 (file)
--- a/rerere.c
+++ b/rerere.c
@@ -299,7 +299,7 @@ static int handle_cache(const char *path, unsigned char *sha1, const char *outpu
 {
        mmfile_t mmfile[3] = {{NULL}};
        mmbuffer_t result = {NULL, 0};
-       struct cache_entry *ce;
+       const struct cache_entry *ce;
        int pos, len, i, hunk_no;
        struct rerere_io_mem io;
        int marker_size = ll_merge_marker_size(path);
@@ -359,7 +359,7 @@ static int handle_cache(const char *path, unsigned char *sha1, const char *outpu
 
 static int check_one_conflict(int i, int *type)
 {
-       struct cache_entry *e = active_cache[i];
+       const struct cache_entry *e = active_cache[i];
 
        if (!ce_stage(e)) {
                *type = RESOLVED;
@@ -374,8 +374,8 @@ static int check_one_conflict(int i, int *type)
 
        /* Only handle regular files with both stages #2 and #3 */
        if (i + 1 < active_nr) {
-               struct cache_entry *e2 = active_cache[i];
-               struct cache_entry *e3 = active_cache[i + 1];
+               const struct cache_entry *e2 = active_cache[i];
+               const struct cache_entry *e3 = active_cache[i + 1];
                if (ce_stage(e2) == 2 &&
                    ce_stage(e3) == 3 &&
                    ce_same_name(e, e3) &&
@@ -398,7 +398,7 @@ static int find_conflict(struct string_list *conflict)
 
        for (i = 0; i < active_nr;) {
                int conflict_type;
-               struct cache_entry *e = active_cache[i];
+               const struct cache_entry *e = active_cache[i];
                i = check_one_conflict(i, &conflict_type);
                if (conflict_type == THREE_STAGED)
                        string_list_insert(conflict, (const char *)e->name);
@@ -414,7 +414,7 @@ int rerere_remaining(struct string_list *merge_rr)
 
        for (i = 0; i < active_nr;) {
                int conflict_type;
-               struct cache_entry *e = active_cache[i];
+               const struct cache_entry *e = active_cache[i];
                i = check_one_conflict(i, &conflict_type);
                if (conflict_type == PUNTED)
                        string_list_insert(merge_rr, (const char *)e->name);

diff --git a/resolve-undo.c b/resolve-undo.c
index 639eb9c59f355e46bdd53cf13fd94e8a6a9537da..77101f51c153ab014ecb80a02ca52daaa16cb10d 100644 (file)
--- a/resolve-undo.c
+++ b/resolve-undo.c
@@ -115,7 +115,7 @@ void resolve_undo_clear_index(struct index_state *istate)
 
 int unmerge_index_entry_at(struct index_state *istate, int pos)
 {
-       struct cache_entry *ce;
+       const struct cache_entry *ce;
        struct string_list_item *item;
        struct resolve_undo_info *ru;
        int i, err = 0, matched;
@@ -167,7 +167,7 @@ void unmerge_marked_index(struct index_state *istate)
                return;
 
        for (i = 0; i < istate->cache_nr; i++) {
-               struct cache_entry *ce = istate->cache[i];
+               const struct cache_entry *ce = istate->cache[i];
                if (ce->ce_flags & CE_MATCHED)
                        i = unmerge_index_entry_at(istate, i);
        }
@@ -181,7 +181,7 @@ void unmerge_index(struct index_state *istate, const char **pathspec)
                return;
 
        for (i = 0; i < istate->cache_nr; i++) {
-               struct cache_entry *ce = istate->cache[i];
+               const struct cache_entry *ce = istate->cache[i];
                if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, NULL))
                        continue;
                i = unmerge_index_entry_at(istate, i);

diff --git a/revision.c b/revision.c
index 2f0142f22e21d7cfb1c74ca7035ee962e16dbd9e..84ccc0529b75508be5d1603a9e73790ca2b102fe 100644 (file)
--- a/revision.c
+++ b/revision.c
@@ -1358,7 +1358,7 @@ static void prepare_show_merge(struct rev_info *revs)
        if (!active_nr)
                read_cache();
        for (i = 0; i < active_nr; i++) {
-               struct cache_entry *ce = active_cache[i];
+               const struct cache_entry *ce = active_cache[i];
                if (!ce_stage(ce))
                        continue;
                if (ce_path_match(ce, &revs->prune_data)) {

diff --git a/sequencer.c b/sequencer.c
index 425207ad5f1068b17daa50199b6880ef6009db79..351548f57db61e62b47584020464aee877b48d8d 100644 (file)
--- a/sequencer.c
+++ b/sequencer.c
@@ -331,7 +331,7 @@ static int do_recursive_merge(struct commit *base, struct commit *next,
                int i;
                strbuf_addstr(msgbuf, "\nConflicts:\n");
                for (i = 0; i < active_nr;) {
-                       struct cache_entry *ce = active_cache[i++];
+                       const struct cache_entry *ce = active_cache[i++];
                        if (ce_stage(ce)) {
                                strbuf_addch(msgbuf, '\t');
                                strbuf_addstr(msgbuf, ce->name);
@@ -371,8 +371,9 @@ static int is_index_unchanged(void)
                active_cache_tree = cache_tree();
 
        if (!cache_tree_fully_valid(active_cache_tree))
-               if (cache_tree_update(active_cache_tree, active_cache,
-                                 active_nr, 0))
+               if (cache_tree_update(active_cache_tree,
+                                     (const struct cache_entry * const *)active_cache,
+                                     active_nr, 0))
                        return error(_("Unable to update cache tree\n"));
 
        return !hashcmp(active_cache_tree->sha1, head_commit->tree->object.sha1);

diff --git a/sha1_name.c b/sha1_name.c
index 90419efe1052406381af3e35b70dc996fe8533ce..86e8a5cd98a9d249e359f0418fe4d8d829c72681 100644 (file)
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -1234,7 +1234,7 @@ static void diagnose_invalid_index_path(int stage,
                                        const char *filename)
 {
        struct stat st;
-       struct cache_entry *ce;
+       const struct cache_entry *ce;
        int pos;
        unsigned namelen = strlen(filename);
        unsigned fullnamelen;
@@ -1328,7 +1328,7 @@ static int get_sha1_with_context_1(const char *name,
         */
        if (name[0] == ':') {
                int stage = 0;
-               struct cache_entry *ce;
+               const struct cache_entry *ce;
                char *new_path = NULL;
                int pos;
                if (!only_to_die && namelen > 2 && name[1] == '/') {

diff --git a/submodule.c b/submodule.c
index 86854248983be78b3702f5045a659dfe83bf4446..4045d5316bc584c55c731c985caca0c2875f670b 100644 (file)
--- a/submodule.c
+++ b/submodule.c
@@ -623,7 +623,7 @@ int fetch_populated_submodules(const struct argv_array *options,
                struct strbuf submodule_path = STRBUF_INIT;
                struct strbuf submodule_git_dir = STRBUF_INIT;
                struct strbuf submodule_prefix = STRBUF_INIT;
-               struct cache_entry *ce = active_cache[i];
+               const struct cache_entry *ce = active_cache[i];
                const char *git_dir, *name, *default_argv;
 
                if (!S_ISGITLINK(ce->ce_mode))

diff --git a/test-dump-cache-tree.c b/test-dump-cache-tree.c
index a6ffdf39d58bcb2b4469080e828dc8a5b0fbc675..47eab9765f5cd172ca630b2a632a92d123354442 100644 (file)
--- a/test-dump-cache-tree.c
+++ b/test-dump-cache-tree.c
@@ -59,6 +59,8 @@ int main(int ac, char **av)
        struct cache_tree *another = cache_tree();
        if (read_cache() < 0)
                die("unable to read index file");
-       cache_tree_update(another, active_cache, active_nr, WRITE_TREE_DRY_RUN);
+       cache_tree_update(another,
+                         (const struct cache_entry * const *)active_cache,
+                         active_nr, WRITE_TREE_DRY_RUN);
        return dump_cache_tree(active_cache_tree, another, "");
 }

diff --git a/tree.c b/tree.c
index 62fed632d8a1ade389dd645b5887155c21ae25ba..c0e568c08f670c45ab9615af2a41bda43569b5fd 100644 (file)
--- a/tree.c
+++ b/tree.c
@@ -159,7 +159,7 @@ int read_tree(struct tree *tree, int stage, struct pathspec *match)
         * sort at the end.
         */
        for (i = 0; !fn && i < active_nr; i++) {
-               struct cache_entry *ce = active_cache[i];
+               const struct cache_entry *ce = active_cache[i];
                if (ce_stage(ce) == stage)
                        fn = read_one_entry;
        }

diff --git a/unpack-trees.c b/unpack-trees.c
index b27f2a62e8c462a95229486342323500de4d5ca0..bf01717015b662cec594d2d3c73e57f409037533 100644 (file)
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -179,7 +179,7 @@ static void display_error_msgs(struct unpack_trees_options *o)
  * Unlink the last component and schedule the leading directories for
  * removal, such that empty directories get removed.
  */
-static void unlink_entry(struct cache_entry *ce)
+static void unlink_entry(const struct cache_entry *ce)
 {
        if (!check_leading_path(ce->name, ce_namelen(ce)))
                return;
@@ -199,7 +199,7 @@ static int check_updates(struct unpack_trees_options *o)
 
        if (o->update && o->verbose_update) {
                for (total = cnt = 0; cnt < index->cache_nr; cnt++) {
-                       struct cache_entry *ce = index->cache[cnt];
+                       const struct cache_entry *ce = index->cache[cnt];
                        if (ce->ce_flags & (CE_UPDATE | CE_WT_REMOVE))
                                total++;
                }
@@ -212,7 +212,7 @@ static int check_updates(struct unpack_trees_options *o)
        if (o->update)
                git_attr_set_direction(GIT_ATTR_CHECKOUT, &o->result);
        for (i = 0; i < index->cache_nr; i++) {
-               struct cache_entry *ce = index->cache[i];
+               const struct cache_entry *ce = index->cache[i];
 
                if (ce->ce_flags & CE_WT_REMOVE) {
                        display_progress(progress, ++cnt);
@@ -376,7 +376,7 @@ static struct cache_entry *next_cache_entry(struct unpack_trees_options *o)
        return NULL;
 }
 
-static void add_same_unmerged(struct cache_entry *ce,
+static void add_same_unmerged(const struct cache_entry *ce,
                              struct unpack_trees_options *o)
 {
        struct index_state *index = o->src_index;
@@ -650,7 +650,7 @@ static int find_cache_pos(struct traverse_info *info,
        int p_len = tree_entry_len(p);
 
        for (pos = o->cache_bottom; pos < index->cache_nr; pos++) {
-               struct cache_entry *ce = index->cache[pos];
+               const struct cache_entry *ce = index->cache[pos];
                const char *ce_name, *ce_slash;
                int cmp, ce_len;
 
@@ -1353,7 +1353,7 @@ static int verify_clean_subdirectory(const struct cache_entry *ce,
  */
 static int icase_exists(struct unpack_trees_options *o, const char *name, int len, struct stat *st)
 {
-       struct cache_entry *src;
+       const struct cache_entry *src;
 
        src = index_name_exists(o->src_index, name, len, 1);
        return src && !ie_match_stat(o->src_index, src, st, CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE);
@@ -1364,7 +1364,7 @@ static int check_ok_to_remove(const char *name, int len, int dtype,
                              enum unpack_trees_error_types error_type,
                              struct unpack_trees_options *o)
 {
-       struct cache_entry *result;
+       const struct cache_entry *result;
 
        /*
         * It may be that the 'lstat()' succeeded even though

diff --git a/wt-status.c b/wt-status.c
index b191c65382b0714978fe1a6351639ed746db099f..08aba7c75bc7899d39c8fbbee48e83ce6617de9e 100644 (file)
--- a/wt-status.c
+++ b/wt-status.c
@@ -371,7 +371,7 @@ static void wt_status_collect_changed_cb(struct diff_queue_struct *q,
 static int unmerged_mask(const char *path)
 {
        int pos, mask;
-       struct cache_entry *ce;
+       const struct cache_entry *ce;
 
        pos = cache_name_pos(path, strlen(path));
        if (0 <= pos)
@@ -475,7 +475,7 @@ static void wt_status_collect_changes_initial(struct wt_status *s)
        for (i = 0; i < active_nr; i++) {
                struct string_list_item *it;
                struct wt_status_change_data *d;
-               struct cache_entry *ce = active_cache[i];
+               const struct cache_entry *ce = active_cache[i];
 
                if (!ce_path_match(ce, &pathspec))
                        continue;