Merge branch 'tb/config-core-filemode-check-on-broken-fs'

diff --git a/diff.c b/diff.c
index 4493dde7495c91346d9d164df63fbb61ed1bf00b..d1bd534caeaf662b0ee0d547d3aa2012310fff57 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -375,7 +375,7 @@ static unsigned long diff_filespec_size(struct diff_filespec *one)
 {
        if (!DIFF_FILE_VALID(one))
                return 0;
-       diff_populate_filespec(one, 1);
+       diff_populate_filespec(one, CHECK_SIZE_ONLY);
        return one->size;
 }
 
@@ -1909,11 +1909,11 @@ static void show_dirstat(struct diff_options *options)
                        diff_free_filespec_data(p->one);
                        diff_free_filespec_data(p->two);
                } else if (DIFF_FILE_VALID(p->one)) {
-                       diff_populate_filespec(p->one, 1);
+                       diff_populate_filespec(p->one, CHECK_SIZE_ONLY);
                        copied = added = 0;
                        diff_free_filespec_data(p->one);
                } else if (DIFF_FILE_VALID(p->two)) {
-                       diff_populate_filespec(p->two, 1);
+                       diff_populate_filespec(p->two, CHECK_SIZE_ONLY);
                        copied = 0;
                        added = p->two->size;
                        diff_free_filespec_data(p->two);
@@ -2187,8 +2187,8 @@ int diff_filespec_is_binary(struct diff_filespec *one)
                        one->is_binary = one->driver->binary;
                else {
                        if (!one->data && DIFF_FILE_VALID(one))
-                               diff_populate_filespec(one, 0);
-                       if (one->data)
+                               diff_populate_filespec(one, CHECK_BINARY);
+                       if (one->is_binary == -1 && one->data)
                                one->is_binary = buffer_is_binary(one->data,
                                                one->size);
                        if (one->is_binary == -1)
@@ -2323,6 +2323,19 @@ static void builtin_diff(const char *name_a,
        } else if (!DIFF_OPT_TST(o, TEXT) &&
            ( (!textconv_one && diff_filespec_is_binary(one)) ||
              (!textconv_two && diff_filespec_is_binary(two)) )) {
+               if (!one->data && !two->data &&
+                   S_ISREG(one->mode) && S_ISREG(two->mode) &&
+                   !DIFF_OPT_TST(o, BINARY)) {
+                       if (!hashcmp(one->sha1, two->sha1)) {
+                               if (must_show_header)
+                                       fprintf(o->file, "%s", header.buf);
+                               goto free_ab_and_return;
+                       }
+                       fprintf(o->file, "%s", header.buf);
+                       fprintf(o->file, "%sBinary files %s and %s differ\n",
+                               line_prefix, lbl[0], lbl[1]);
+                       goto free_ab_and_return;
+               }
                if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
                        die("unable to read files to diff");
                /* Quite common confusing case */
@@ -2667,8 +2680,9 @@ static int diff_populate_gitlink(struct diff_filespec *s, int size_only)
  * grab the data for the blob (or file) for our own in-core comparison.
  * diff_filespec has data and size fields for this purpose.
  */
-int diff_populate_filespec(struct diff_filespec *s, int size_only)
+int diff_populate_filespec(struct diff_filespec *s, unsigned int flags)
 {
+       int size_only = flags & CHECK_SIZE_ONLY;
        int err = 0;
        /*
         * demote FAIL to WARN to allow inspecting the situation
@@ -2723,6 +2737,11 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only)
                }
                if (size_only)
                        return 0;
+               if ((flags & CHECK_BINARY) &&
+                   s->size > big_file_threshold && s->is_binary == -1) {
+                       s->is_binary = 1;
+                       return 0;
+               }
                fd = open(s->path, O_RDONLY);
                if (fd < 0)
                        goto err_empty;
@@ -2744,16 +2763,21 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only)
        }
        else {
                enum object_type type;
-               if (size_only) {
+               if (size_only || (flags & CHECK_BINARY)) {
                        type = sha1_object_info(s->sha1, &s->size);
                        if (type < 0)
                                die("unable to read %s", sha1_to_hex(s->sha1));
-               } else {
-                       s->data = read_sha1_file(s->sha1, &type, &s->size);
-                       if (!s->data)
-                               die("unable to read %s", sha1_to_hex(s->sha1));
-                       s->should_free = 1;
+                       if (size_only)
+                               return 0;
+                       if (s->size > big_file_threshold && s->is_binary == -1) {
+                               s->is_binary = 1;
+                               return 0;
+                       }
                }
+               s->data = read_sha1_file(s->sha1, &type, &s->size);
+               if (!s->data)
+                       die("unable to read %s", sha1_to_hex(s->sha1));
+               s->should_free = 1;
        }
        return 0;
 }
@@ -4687,8 +4711,8 @@ static int diff_filespec_check_stat_unmatch(struct diff_filepair *p)
            !DIFF_FILE_VALID(p->two) ||
            (p->one->sha1_valid && p->two->sha1_valid) ||
            (p->one->mode != p->two->mode) ||
-           diff_populate_filespec(p->one, 1) ||
-           diff_populate_filespec(p->two, 1) ||
+           diff_populate_filespec(p->one, CHECK_SIZE_ONLY) ||
+           diff_populate_filespec(p->two, CHECK_SIZE_ONLY) ||
            (p->one->size != p->two->size) ||
            !diff_filespec_is_identical(p->one, p->two)) /* (2) */
                p->skip_stat_unmatch_result = 1;
@@ -4930,7 +4954,7 @@ static char *run_textconv(const char *pgm, struct diff_filespec *spec,
        struct diff_tempfile *temp;
        const char *argv[3];
        const char **arg = argv;
-       struct child_process child;
+       struct child_process child = CHILD_PROCESS_INIT;
        struct strbuf buf = STRBUF_INIT;
        int err = 0;
 
@@ -4939,7 +4963,6 @@ static char *run_textconv(const char *pgm, struct diff_filespec *spec,
        *arg++ = temp->name;
        *arg = NULL;
 
-       memset(&child, 0, sizeof(child));
        child.use_shell = 1;
        child.argv = argv;
        child.out = -1;