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![Jeff King](/assets/img/avatar_default.png)
The point of xsize_t is to safely cast an off_t into a size_t (because we are about to mmap). But in count-objects, we are summing the sizes in an off_t. Using xsize_t means that count-objects could fail on a 32-bit system with a 4G object (not likely, as other parts of git would fail, but we should at least be correct here). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
175 lines
4.3 KiB
C
175 lines
4.3 KiB
C
/*
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* Builtin "git count-objects".
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*
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* Copyright (c) 2006 Junio C Hamano
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*/
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#include "cache.h"
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#include "dir.h"
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#include "builtin.h"
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#include "parse-options.h"
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static unsigned long garbage;
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static off_t size_garbage;
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static void real_report_garbage(const char *desc, const char *path)
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{
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struct stat st;
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if (!stat(path, &st))
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size_garbage += st.st_size;
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warning("%s: %s", desc, path);
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garbage++;
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}
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static void count_objects(DIR *d, char *path, int len, int verbose,
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unsigned long *loose,
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off_t *loose_size,
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unsigned long *packed_loose)
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{
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struct dirent *ent;
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while ((ent = readdir(d)) != NULL) {
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char hex[41];
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unsigned char sha1[20];
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const char *cp;
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int bad = 0;
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if (is_dot_or_dotdot(ent->d_name))
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continue;
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for (cp = ent->d_name; *cp; cp++) {
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int ch = *cp;
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if (('0' <= ch && ch <= '9') ||
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('a' <= ch && ch <= 'f'))
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continue;
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bad = 1;
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break;
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}
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if (cp - ent->d_name != 38)
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bad = 1;
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else {
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struct stat st;
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memcpy(path + len + 3, ent->d_name, 38);
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path[len + 2] = '/';
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path[len + 41] = 0;
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if (lstat(path, &st) || !S_ISREG(st.st_mode))
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bad = 1;
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else
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(*loose_size) += on_disk_bytes(st);
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}
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if (bad) {
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if (verbose) {
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struct strbuf sb = STRBUF_INIT;
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strbuf_addf(&sb, "%.*s/%s",
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len + 2, path, ent->d_name);
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report_garbage("garbage found", sb.buf);
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strbuf_release(&sb);
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}
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continue;
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}
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(*loose)++;
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if (!verbose)
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continue;
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memcpy(hex, path+len, 2);
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memcpy(hex+2, ent->d_name, 38);
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hex[40] = 0;
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if (get_sha1_hex(hex, sha1))
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die("internal error");
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if (has_sha1_pack(sha1))
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(*packed_loose)++;
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}
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}
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static char const * const count_objects_usage[] = {
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N_("git count-objects [-v] [-H | --human-readable]"),
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NULL
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};
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int cmd_count_objects(int argc, const char **argv, const char *prefix)
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{
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int i, verbose = 0, human_readable = 0;
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const char *objdir = get_object_directory();
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int len = strlen(objdir);
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char *path = xmalloc(len + 50);
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unsigned long loose = 0, packed = 0, packed_loose = 0;
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off_t loose_size = 0;
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struct option opts[] = {
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OPT__VERBOSE(&verbose, N_("be verbose")),
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OPT_BOOL('H', "human-readable", &human_readable,
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N_("print sizes in human readable format")),
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OPT_END(),
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};
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argc = parse_options(argc, argv, prefix, opts, count_objects_usage, 0);
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/* we do not take arguments other than flags for now */
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if (argc)
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usage_with_options(count_objects_usage, opts);
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if (verbose)
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report_garbage = real_report_garbage;
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memcpy(path, objdir, len);
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if (len && objdir[len-1] != '/')
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path[len++] = '/';
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for (i = 0; i < 256; i++) {
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DIR *d;
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sprintf(path + len, "%02x", i);
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d = opendir(path);
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if (!d)
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continue;
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count_objects(d, path, len, verbose,
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&loose, &loose_size, &packed_loose);
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closedir(d);
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}
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if (verbose) {
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struct packed_git *p;
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unsigned long num_pack = 0;
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off_t size_pack = 0;
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struct strbuf loose_buf = STRBUF_INIT;
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struct strbuf pack_buf = STRBUF_INIT;
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struct strbuf garbage_buf = STRBUF_INIT;
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if (!packed_git)
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prepare_packed_git();
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for (p = packed_git; p; p = p->next) {
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if (!p->pack_local)
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continue;
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if (open_pack_index(p))
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continue;
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packed += p->num_objects;
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size_pack += p->pack_size + p->index_size;
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num_pack++;
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}
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if (human_readable) {
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strbuf_humanise_bytes(&loose_buf, loose_size);
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strbuf_humanise_bytes(&pack_buf, size_pack);
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strbuf_humanise_bytes(&garbage_buf, size_garbage);
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} else {
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strbuf_addf(&loose_buf, "%lu",
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(unsigned long)(loose_size / 1024));
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strbuf_addf(&pack_buf, "%lu",
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(unsigned long)(size_pack / 1024));
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strbuf_addf(&garbage_buf, "%lu",
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(unsigned long)(size_garbage / 1024));
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}
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printf("count: %lu\n", loose);
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printf("size: %s\n", loose_buf.buf);
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printf("in-pack: %lu\n", packed);
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printf("packs: %lu\n", num_pack);
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printf("size-pack: %s\n", pack_buf.buf);
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printf("prune-packable: %lu\n", packed_loose);
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printf("garbage: %lu\n", garbage);
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printf("size-garbage: %s\n", garbage_buf.buf);
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strbuf_release(&loose_buf);
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strbuf_release(&pack_buf);
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strbuf_release(&garbage_buf);
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} else {
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struct strbuf buf = STRBUF_INIT;
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if (human_readable)
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strbuf_humanise_bytes(&buf, loose_size);
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else
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strbuf_addf(&buf, "%lu kilobytes",
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(unsigned long)(loose_size / 1024));
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printf("%lu objects, %s\n", loose, buf.buf);
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strbuf_release(&buf);
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}
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return 0;
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}
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