Nguyễn Thái Ngọc Duy <[email protected]> writes:
> prepare_packed_git_one() is modified to allow count-objects to hook a
> report function to so we don't need to duplicate the pack searching
> logic in count-objects.c. When report_pack_garbage is NULL, the
> overhead is insignificant.
>
> Signed-off-by: Nguyễn Thái Ngọc Duy <[email protected]>
> ---
> Documentation/git-count-objects.txt | 4 +-
> builtin/count-objects.c | 18 ++++++++-
> sha1_file.c | 81
> +++++++++++++++++++++++++++++++++++--
> 3 files changed, 97 insertions(+), 6 deletions(-)
>
> diff --git a/Documentation/git-count-objects.txt
> b/Documentation/git-count-objects.txt
> index e816823..1611d7c 100644
> --- a/Documentation/git-count-objects.txt
> +++ b/Documentation/git-count-objects.txt
> @@ -33,8 +33,8 @@ size-pack: disk space consumed by the packs, in KiB
> prune-packable: the number of loose objects that are also present in
> the packs. These objects could be pruned using `git prune-packed`.
> +
> -garbage: the number of files in loose object database that are not
> -valid loose objects
> +garbage: the number of files in object database that are not valid
> +loose objects nor valid packs
>
> GIT
> ---
> diff --git a/builtin/count-objects.c b/builtin/count-objects.c
> index 9afaa88..118b2ae 100644
> --- a/builtin/count-objects.c
> +++ b/builtin/count-objects.c
> @@ -9,6 +9,20 @@
> #include "builtin.h"
> #include "parse-options.h"
>
> +static unsigned long garbage;
> +
> +extern void (*report_pack_garbage)(const char *path, int len, const char
> *name);
> +static void real_report_pack_garbage(const char *path, int len, const char
> *name)
> +{
Don't some callers call this on paths outside objects/pack/
directory? Is it still report-pack-garbage?
> + if (len && name)
> + error("garbage found: %.*s/%s", len, path, name);
> + else if (!len && name)
> + error("garbage found: %s%s", path, name);
> + else
> + error("garbage found: %s", path);
> + garbage++;
> +}
> +
> static void count_objects(DIR *d, char *path, int len, int verbose,
> unsigned long *loose,
> off_t *loose_size,
> @@ -76,7 +90,7 @@ int cmd_count_objects(int argc, const char **argv, const
> char *prefix)
> const char *objdir = get_object_directory();
> int len = strlen(objdir);
> char *path = xmalloc(len + 50);
> - unsigned long loose = 0, packed = 0, packed_loose = 0, garbage = 0;
> + unsigned long loose = 0, packed = 0, packed_loose = 0;
> off_t loose_size = 0;
> struct option opts[] = {
> OPT__VERBOSE(&verbose, N_("be verbose")),
> @@ -87,6 +101,8 @@ int cmd_count_objects(int argc, const char **argv, const
> char *prefix)
> /* we do not take arguments other than flags for now */
> if (argc)
> usage_with_options(count_objects_usage, opts);
> + if (verbose)
> + report_pack_garbage = real_report_pack_garbage;
> memcpy(path, objdir, len);
> if (len && objdir[len-1] != '/')
> path[len++] = '/';
> diff --git a/sha1_file.c b/sha1_file.c
> index 40b2329..cc6ef03 100644
> --- a/sha1_file.c
> +++ b/sha1_file.c
> @@ -21,6 +21,7 @@
> #include "sha1-lookup.h"
> #include "bulk-checkin.h"
> #include "streaming.h"
> +#include "dir.h"
>
> #ifndef O_NOATIME
> #if defined(__linux__) && (defined(__i386__) || defined(__PPC__))
> @@ -1000,6 +1001,54 @@ void install_packed_git(struct packed_git *pack)
> packed_git = pack;
> }
>
> +/* A hook for count-objects to report invalid files in pack directory */
> +void (*report_pack_garbage)(const char *path, int len, const char *name);
> +
> +static const char *known_pack_extensions[] = { ".pack", ".keep", NULL };
This sounds wrong. Isn't ".idx" also known?
> +static void report_garbage(struct string_list *list)
> +{
> + struct strbuf sb = STRBUF_INIT;
> + struct packed_git *p;
> + int i;
> +
> + if (!report_pack_garbage)
> + return;
> +
> + sort_string_list(list);
> +
> + for (p = packed_git; p; p = p->next) {
> + struct string_list_item *item;
> + if (!p->pack_local)
> + continue;
> + strbuf_reset(&sb);
> + strbuf_add(&sb, p->pack_name,
> + strlen(p->pack_name) - strlen(".pack"));
> + item = string_list_lookup(list, sb.buf);
> + if (!item)
> + continue;
> + /*
> + * string_list_lookup does not guarantee to return the
> + * first matched string if it's duplicated.
> + */
> + while (item - list->items &&
> + !strcmp(item[-1].string, item->string))
> + item--;
> + while (item - list->items < list->nr &&
> + !strcmp(item->string, sb.buf)) {
> + item->util = NULL; /* non-garbage mark */
> + item++;
> + }
> + }
> + for (i = 0; i < list->nr; i++) {
> + struct string_list_item *item = list->items + i;
> + if (!item->util)
> + continue;
> + report_pack_garbage(item->string, 0, item->util);
> + }
> + strbuf_release(&sb);
> +}
> +
> static void prepare_packed_git_one(char *objdir, int local)
> {
> /* Ensure that this buffer is large enough so that we can
> @@ -1009,6 +1058,7 @@ static void prepare_packed_git_one(char *objdir, int
> local)
> int len;
> DIR *dir;
> struct dirent *de;
> + struct string_list garbage = STRING_LIST_INIT_DUP;
>
> sprintf(path, "%s/pack", objdir);
> len = strlen(path);
> @@ -1024,14 +1074,37 @@ static void prepare_packed_git_one(char *objdir, int
> local)
> int namelen = strlen(de->d_name);
> struct packed_git *p;
>
> - if (!has_extension(de->d_name, ".idx"))
> + if (len + namelen + 1 > sizeof(path)) {
> + if (report_pack_garbage)
> + report_pack_garbage(path, len - 1, de->d_name);
A pack/in/a/very/long/path/pack-0000000000000000000000000000000000000000.pack
may pass when fed to "git verify-pack", but this will report it as "garbage",
without reporting what is wrong with it. Wouldn't that confuse users?
> continue;
> + }
> +
> + strcpy(path + len, de->d_name);
>
> - if (len + namelen + 1 > sizeof(path))
> + if (!has_extension(de->d_name, ".idx")) {
> + struct string_list_item *item;
> + int i, n;
> + if (!report_pack_garbage)
> + continue;
> + if (is_dot_or_dotdot(de->d_name))
> + continue;
> + for (i = 0; known_pack_extensions[i]; i++)
> + if (has_extension(de->d_name,
> + known_pack_extensions[i]))
> + break;
> + if (!known_pack_extensions[i]) {
> + report_pack_garbage(path, 0, NULL);
> + continue;
> + }
> + n = strlen(path) - strlen(known_pack_extensions[i]);
> + item = string_list_append_nodup(&garbage,
> + xstrndup(path, n));
> + item->util = (void*)known_pack_extensions[i];
> continue;
> + }
Why isn't this part more like this?
if (dot-or-dotdot) {
continue;
} else if (has_extension(de->d_name, ".idx")) {
do things for the .idx file;
} else if (has_extension(de->d_name, ".pack") {
do things for the .pack file, including
queuing the name if we haven't seen
corresponding .idx for later examination;
} else if (has_extension(de->d_name, ".keep") {
nothing special for now but we may
want to add some other checks later
} else {
everything else is a garbage
report_pack_garbage();
}
>
> /* Don't reopen a pack we already have. */
> - strcpy(path + len, de->d_name);
> for (p = packed_git; p; p = p->next) {
> if (!memcmp(path, p->pack_name, len + namelen - 4))
> break;
> @@ -1047,6 +1120,8 @@ static void prepare_packed_git_one(char *objdir, int
> local)
> install_packed_git(p);
> }
> closedir(dir);
> + report_garbage(&garbage);
> + string_list_clear(&garbage, 0);
> }
>
> static int sort_pack(const void *a_, const void *b_)
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