Teach "fsck" not to follow subproject links

diff --git a/builtin-blame.c b/builtin-blame.c
index 7a5665f093d7861fdab8a57f9f98c371210525b3..60ec5354f11c61c49829d41e8c07d22573f16bc7 100644 (file)
--- a/builtin-blame.c
+++ b/builtin-blame.c
@@ -87,9 +87,9 @@ struct origin {
 static char *fill_origin_blob(struct origin *o, mmfile_t *file)
 {
        if (!o->file.ptr) {
-               char type[10];
+               enum object_type type;
                num_read_blob++;
-               file->ptr = read_sha1_file(o->blob_sha1, type,
+               file->ptr = read_sha1_file(o->blob_sha1, &type,
                                           (unsigned long *)(&(file->size)));
                o->file = *file;
        }
@@ -180,16 +180,15 @@ struct scoreboard {
        int *lineno;
 };
 
-static int cmp_suspect(struct origin *a, struct origin *b)
+static inline int same_suspect(struct origin *a, struct origin *b)
 {
-       int cmp = hashcmp(a->commit->object.sha1, b->commit->object.sha1);
-       if (cmp)
-               return cmp;
-       return strcmp(a->path, b->path);
+       if (a == b)
+               return 1;
+       if (a->commit != b->commit)
+               return 0;
+       return !strcmp(a->path, b->path);
 }
 
-#define cmp_suspect(a, b) ( ((a)==(b)) ? 0 : cmp_suspect(a,b) )
-
 static void sanity_check_refcnt(struct scoreboard *);
 
 /*
@@ -202,7 +201,7 @@ static void coalesce(struct scoreboard *sb)
        struct blame_entry *ent, *next;
 
        for (ent = sb->ent; ent && (next = ent->next); ent = next) {
-               if (!cmp_suspect(ent->suspect, next->suspect) &&
+               if (same_suspect(ent->suspect, next->suspect) &&
                    ent->guilty == next->guilty &&
                    ent->s_lno + ent->num_lines == next->s_lno) {
                        ent->num_lines += next->num_lines;
@@ -263,7 +262,6 @@ static struct origin *get_origin(struct scoreboard *sb,
 static int fill_blob_sha1(struct origin *origin)
 {
        unsigned mode;
-       char type[10];
 
        if (!is_null_sha1(origin->blob_sha1))
                return 0;
@@ -271,8 +269,7 @@ static int fill_blob_sha1(struct origin *origin)
                           origin->path,
                           origin->blob_sha1, &mode))
                goto error_out;
-       if (sha1_object_info(origin->blob_sha1, type, NULL) ||
-           strcmp(type, blob_type))
+       if (sha1_object_info(origin->blob_sha1, NULL) != OBJ_BLOB)
                goto error_out;
        return 0;
  error_out:
@@ -777,7 +774,7 @@ static int find_last_in_target(struct scoreboard *sb, struct origin *target)
        int last_in_target = -1;
 
        for (e = sb->ent; e; e = e->next) {
-               if (e->guilty || cmp_suspect(e->suspect, target))
+               if (e->guilty || !same_suspect(e->suspect, target))
                        continue;
                if (last_in_target < e->s_lno + e->num_lines)
                        last_in_target = e->s_lno + e->num_lines;
@@ -797,7 +794,7 @@ static void blame_chunk(struct scoreboard *sb,
        struct blame_entry *e;
 
        for (e = sb->ent; e; e = e->next) {
-               if (e->guilty || cmp_suspect(e->suspect, target))
+               if (e->guilty || !same_suspect(e->suspect, target))
                        continue;
                if (same <= e->s_lno)
                        continue;
@@ -972,7 +969,7 @@ static int find_move_in_parent(struct scoreboard *sb,
        while (made_progress) {
                made_progress = 0;
                for (e = sb->ent; e; e = e->next) {
-                       if (e->guilty || cmp_suspect(e->suspect, target))
+                       if (e->guilty || !same_suspect(e->suspect, target))
                                continue;
                        find_copy_in_blob(sb, e, parent, split, &file_p);
                        if (split[1].suspect &&
@@ -1004,12 +1001,12 @@ static struct blame_list *setup_blame_list(struct scoreboard *sb,
        struct blame_list *blame_list = NULL;
 
        for (e = sb->ent, num_ents = 0; e; e = e->next)
-               if (!e->guilty && !cmp_suspect(e->suspect, target))
+               if (!e->guilty && same_suspect(e->suspect, target))
                        num_ents++;
        if (num_ents) {
                blame_list = xcalloc(num_ents, sizeof(struct blame_list));
                for (e = sb->ent, i = 0; e; e = e->next)
-                       if (!e->guilty && !cmp_suspect(e->suspect, target))
+                       if (!e->guilty && same_suspect(e->suspect, target))
                                blame_list[i++].ent = e;
        }
        *num_ents_p = num_ents;
@@ -1139,7 +1136,7 @@ static void pass_whole_blame(struct scoreboard *sb,
                origin->file.ptr = NULL;
        }
        for (e = sb->ent; e; e = e->next) {
-               if (cmp_suspect(e->suspect, origin))
+               if (!same_suspect(e->suspect, origin))
                        continue;
                origin_incref(porigin);
                origin_decref(e->suspect);
@@ -1246,26 +1243,26 @@ static void pass_blame(struct scoreboard *sb, struct origin *origin, int opt)
  */
 struct commit_info
 {
-       char *author;
-       char *author_mail;
+       const char *author;
+       const char *author_mail;
        unsigned long author_time;
-       char *author_tz;
+       const char *author_tz;
 
        /* filled only when asked for details */
-       char *committer;
-       char *committer_mail;
+       const char *committer;
+       const char *committer_mail;
        unsigned long committer_time;
-       char *committer_tz;
+       const char *committer_tz;
 
-       char *summary;
+       const char *summary;
 };
 
 /*
  * Parse author/committer line in the commit object buffer
  */
 static void get_ac_line(const char *inbuf, const char *what,
-                       int bufsz, char *person, char **mail,
-                       unsigned long *time, char **tz)
+                       int bufsz, char *person, const char **mail,
+                       unsigned long *time, const char **tz)
 {
        int len;
        char *tmp, *endp;
@@ -1282,7 +1279,7 @@ static void get_ac_line(const char *inbuf, const char *what,
        if (bufsz <= len) {
        error_out:
                /* Ugh */
-               person = *mail = *tz = "(unknown)";
+               *mail = *tz = "(unknown)";
                *time = 0;
                return;
        }
@@ -1322,10 +1319,10 @@ static void get_commit_info(struct commit *commit,
         * we now need to populate them for output.
         */
        if (!commit->buffer) {
-               char type[20];
+               enum object_type type;
                unsigned long size;
                commit->buffer =
-                       read_sha1_file(commit->object.sha1, type, &size);
+                       read_sha1_file(commit->object.sha1, &type, &size);
        }
        ret->author = author_buf;
        get_ac_line(commit->buffer, "\nauthor ",
@@ -1445,7 +1442,7 @@ static void assign_blame(struct scoreboard *sb, struct rev_info *revs, int opt)
 
                /* Take responsibility for the remaining entries */
                for (ent = sb->ent; ent; ent = ent->next)
-                       if (!cmp_suspect(ent->suspect, suspect))
+                       if (same_suspect(ent->suspect, suspect))
                                found_guilty_entry(ent);
                origin_decref(suspect);
 
@@ -1965,7 +1962,7 @@ static struct commit *fake_working_tree_commit(const char *path, const char *con
                                die("Cannot lstat %s", path);
                        read_from = path;
                }
-               fin_size = st.st_size;
+               fin_size = xsize_t(st.st_size);
                buf = xmalloc(fin_size+1);
                mode = canon_mode(st.st_mode);
                switch (st.st_mode & S_IFMT) {
@@ -2006,7 +2003,7 @@ static struct commit *fake_working_tree_commit(const char *path, const char *con
        buf[fin_size] = 0;
        origin->file.ptr = buf;
        origin->file.size = fin_size;
-       pretend_sha1_file(buf, fin_size, blob_type, origin->blob_sha1);
+       pretend_sha1_file(buf, fin_size, OBJ_BLOB, origin->blob_sha1);
        commit->util = origin;
 
        /*
@@ -2068,7 +2065,7 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
        int show_stats = 0;
        const char *revs_file = NULL;
        const char *final_commit_name = NULL;
-       char type[10];
+       enum object_type type;
        const char *bottomtop = NULL;
        const char *contents_from = NULL;
 
@@ -2097,17 +2094,17 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
                        output_option |= OUTPUT_LONG_OBJECT_NAME;
                else if (!strcmp("-S", arg) && ++i < argc)
                        revs_file = argv[i];
-               else if (!strncmp("-M", arg, 2)) {
+               else if (!prefixcmp(arg, "-M")) {
                        opt |= PICKAXE_BLAME_MOVE;
                        blame_move_score = parse_score(arg+2);
                }
-               else if (!strncmp("-C", arg, 2)) {
+               else if (!prefixcmp(arg, "-C")) {
                        if (opt & PICKAXE_BLAME_COPY)
                                opt |= PICKAXE_BLAME_COPY_HARDER;
                        opt |= PICKAXE_BLAME_COPY | PICKAXE_BLAME_MOVE;
                        blame_copy_score = parse_score(arg+2);
                }
-               else if (!strncmp("-L", arg, 2)) {
+               else if (!prefixcmp(arg, "-L")) {
                        if (!arg[2]) {
                                if (++i >= argc)
                                        usage(blame_usage);
@@ -2203,6 +2200,7 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
                        if (!strcmp(argv[j], "--"))
                                seen_dashdash = j;
                if (seen_dashdash) {
+                       /* (2) */
                        if (seen_dashdash + 1 != argc - 1)
                                usage(blame_usage);
                        path = add_prefix(prefix, argv[seen_dashdash + 1]);
@@ -2211,6 +2209,8 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
                }
                else {
                        /* (3) */
+                       if (argc <= i)
+                               usage(blame_usage);
                        path = add_prefix(prefix, argv[i]);
                        if (i + 1 == argc - 1) {
                                final_commit_name = argv[i + 1];
@@ -2299,7 +2299,7 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
                if (fill_blob_sha1(o))
                        die("no such path %s in %s", path, final_commit_name);
 
-               sb.final_buf = read_sha1_file(o->blob_sha1, type,
+               sb.final_buf = read_sha1_file(o->blob_sha1, &type,
                                              &sb.final_buf_size);
        }
        num_read_blob++;