jobd/gc.sh

   1 #!/bin/sh
   2
   3 # NOTE: additional options can be passed to git repack by specifying
   4 #       them after the project name, for example:
   5 #         gc.sh my-project -f
   6
   7 . @basedir@/shlib.sh
   8
   9 set -e
  10
  11 if [ $# -lt 1 ]; then
  12         echo "Usage: gc.sh projname [extra-repack-args]" >&2
  13         exit 1
  14 fi
  15
  16 # packing options
  17 packopts="--depth=50 --window=50 --window-memory=${var_window_memory:-1g}"
  18 quiet=; [ -n "$show_progress" ] || quiet=-q
  19
  20 umask 002
  21 [ "$cfg_permission_control" != "Hooks" ] || umask 000
  22 clean_git_env
  23
  24 pidactive() {
  25         if _result="$(kill -0 "$1" 2>&1)"; then
  26                 # process exists and we have permission to signal it
  27                 return 0
  28         fi
  29         case "$_result" in *"not permitted"*)
  30                 # we do not have permission to signal the process
  31                 return 0
  32         esac
  33         # process does not exist
  34         return 1
  35 }
  36
  37 createlock() {
  38         # A .lock file should only exist for much less than a second.
  39         # If we see a stale lock file (> 1h old), remove it and then,
  40         # just in case, wait 30 seconds for any process whose .lock
  41         # we might have just removed (it's racy) to finish doing what
  42         # should take much less than a second to do.
  43         _stalelock="$(find "$1.lock" -maxdepth 1 -mmin +60 -print 2>/dev/null)" || :
  44         if [ -n "$_stalelock" ]; then
  45                 rm -f "$_stalelock"
  46                 sleep 30
  47         fi
  48         for _try in p p n; do
  49                 if (set -C; >"$1.lock") 2>/dev/null; then
  50                         echo "$1.lock"
  51                         return 0
  52                 fi
  53                 # delay and try again
  54                 [ "$_try" != "p" ] || sleep 1
  55         done
  56         # cannot create lock file
  57         return 1
  58 }
  59
  60 # The pre-receive script creates one ref log file per push but we want them to
  61 # be coalesced into one ref log file per day.  We are guaranteed that any files
  62 # we find to coalesce are NOT currently being written to since they are always
  63 # written first as temporary files and then moved into place.  We attempt to
  64 # transfer the most recent modification time to the coalesced log file which
  65 # would step on its mod time if it were being written to directly, but if we
  66 # find per-process ref log files then it must be a push project and the only
  67 # thing that would write directly to the main per-day log file would be a
  68 # mirror project so there's actually no conflict.
  69 # Also, if the clock is wonky (or was futzed with) we may have both YYYYMMDD
  70 # and YYYYMMDD.gz present in which case combine them into YYYYMMDD
  71 coalesce_reflogs() {
  72         [ -d reflogs ] || return 0
  73         rm -f .gc_failed
  74         find reflogs -maxdepth 1 -type f -name "[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]" -print |
  75         while read -r rname; do
  76                 if [ -e "$rname.gz" ]; then
  77                         if [ -s "$rname" ]; then
  78                                 # Presumably the .gz file must have been created before the non-gz
  79                                 # file since it had to be uncompressed at some point therefore
  80                                 # we need to append the non-gz contents to it but keep the non-gz
  81                                 # contents timestamp so we rename to YYYYMMDD_ which will sort first
  82                                 # and be picked up in the next step if we are interrupted in the middle.
  83                                 # If a YYYYMMDD_ file already exists we append to it and transfer the
  84                                 # timestamp.  Finally we transfer the YYYYMMDD_ timestamp to the result
  85                                 # and remove the YYYYMMDD_ temporary file leaving the result uncompressed.
  86                                 if [ -e "${rname}_" ]; then
  87                                         cat "$rname" >>"${rname}_"
  88                                         touch -r "$rname" "${rname}_"
  89                                         rm -f "$rname"
  90                                         ! [ -e "$rname" ]
  91                                 else
  92                                         mv "$rname" "${rname}_"
  93                                 fi
  94                                 gzip -d "$rname.gz" </dev/null
  95                                 [ -e "$rname" ] && ! [ -e "$rname.gz" ]
  96                                 cat "${rname}_" >>"$rname"
  97                                 touch -r "${rname}_" "$rname"
  98                                 rm -f "${rname}_"
  99                         else
 100                                 # Just remove the empty file to resolve the problem
 101                                 rm -f "$rname"
 102                         fi
 103                 fi
 104         done
 105         find reflogs -maxdepth 1 -type f -name "[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]_*" -print | LC_ALL=C sort |
 106         while read -r rname; do
 107                 logname="${rname%%_*}"
 108                 # If someone's been futzing with the date, the file we want to
 109                 # append to could already have been compressed, so we just uncompress
 110                 # it here.  The previous block guarantees we do not have both a compressed
 111                 # and uncompressed version present at the same time.
 112                 if [ -e "$logname.gz" ]; then
 113                         gzip -d "$logname.gz" </dev/null
 114                         [ -e "$logname" ] && ! [ -e "$logname.gz" ]
 115                 fi
 116                 cat "$rname" >>"$logname"
 117                 touch -r "$rname" "$logname"
 118                 rm -f "$rname"
 119                 if [ -e "$rname" ]; then
 120                         >.gc_failed
 121                         echo "! [$proj] failed to remove $rname" >&2
 122                         exit 1 # will only exit subshell created by "|"
 123                 fi
 124         done
 125         ! [ -e .gc_failed ]
 126 }
 127
 128 # Remove any files in reflogs that are older than $cfg_reflogs_lifetime days
 129 prune_reflogs() {
 130         [ -d reflogs ] || return 0
 131         exp="$(( ${cfg_reflogs_lifetime:-1} * 1440 ))"
 132         [ $exp -gt 0 ] || exp=1440
 133         [ $exp -le 43200 ] || exp=43200
 134         find reflogs -maxdepth 1 -type f -mmin "+$exp" -exec rm -f '{}' + || :
 135 }
 136
 137 # Compact any reflogs that are not today's UTC date unless a .gz version exists
 138 compact_reflogs() {
 139         [ -d reflogs ] || return 0
 140         _td="reflogs/$(TZ=UTC date '+%Y%m%d')"
 141         find reflogs -maxdepth 1 -type f -name "[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]" -print |
 142         while read -r rname; do
 143                 [ "$rname" != "$_td" ] || continue
 144                 ! [ -e "$rname.gz" ] || continue
 145                 gzip -9 "$rname" </dev/null
 146         done
 147 }
 148
 149 # return true if there's more than one objects/pack-<sha>.pack file or
 150 # ANY sha-1 files in objects
 151 is_dirty() {
 152         _packs=$(find objects/pack -type f -name "pack-$octet20.pack" -print | head -n 2 | LC_ALL=C wc -l)
 153         if [ $_packs != 1 ] && [ $_packs != 0 ]; then
 154                 return 0
 155         fi
 156         _objs=$(find objects/$octet -type f -name "$octet19" -print 2>/dev/null | head -n 1 | LC_ALL=C wc -l)
 157         [ $_objs -ne 0 ]
 158 }
 159
 160 # make sure combine-packs uses the correct Git executable
 161 run_combine_packs() {
 162         PATH="$var_git_exec_path:$cfg_basedir/bin:$PATH" @basedir@/jobd/combine-packs.sh "$@"
 163 }
 164
 165 # combine the input pack(s) into a new pack (or possibly packs if packSizeLimit set)
 166 # input pack names are read from standard input one per line delimited by the first
 167 # ':', ' ' or '\n' character on the line (which allows gfi-packs to be read directly)
 168 # all arguments, if any, are passed to pack-objects as additional options
 169 # returns non-zero on failure AND creates .gc_failed in that case
 170 combine_packs() {
 171         rm -f .gc_failed
 172         find objects/pack -maxdepth 1 -type f -name '*.zap*' -exec rm -f '{}' + || :
 173         run_combine_packs --replace "$@" $packopts --all-progress-implied $quiet --non-empty || {
 174                 >.gc_failed
 175                 return 1
 176         }
 177         return 0
 178 }
 179
 180 # if the current directory is_gfi_mirror then repack all packs listed in gfi-packs
 181 repack_gfi_packs() {
 182         [ -n "$gfi_mirror" ] || return 0
 183         [ -d objects/pack ] || { rm -f gfi-packs; return 0; }
 184         progress "~ [$proj] redeltifying poor quality git fast-import packs"
 185         combine_packs --ignore-missing --no-reuse-delta <gfi-packs
 186         rm -f gfi-packs
 187         return 0
 188 }
 189
 190 # combine small packs into larger pack(s)
 191 # we avoid any keep, bndl or bitmap packs
 192 # if the optional argument is non-empty even a single small pack will be redeltad
 193 combine_small_packs() {
 194         _didprogress=
 195         _minsmallpacks=2
 196         if [ -n "$1" ] && [ -n "$noreusedeltaopt" ]; then
 197                 _minsmallpacks=1
 198         fi
 199         _lpo="--exclude-no-idx --exclude-keep --exclude-bitmap --exclude-bndl --quiet"
 200         _lpo="$_lpo --object-limit $var_redelta_threshold objects/pack"
 201         while
 202                 _cnt="$(list_packs --count $_lpo)" || :
 203                 test "${_cnt:-0}" -ge $_minsmallpacks
 204         do
 205                 [ -n "$_didprogress" ] || {
 206                         progress "~ [$proj] combining small packs into a single larger pack"
 207                         _didprogress=1
 208                 }
 209                 _newp="$(list_packs $_lpo | combine_packs --names $noreusedeltaopt)"
 210                 _newc="$(( $(echo "$_newp" | LC_ALL=C wc -w) ))"
 211                 # be paranoid and exit the loop if we haven't reduced the number of packs
 212                 [ $_newc -lt $_cnt ] || break
 213                 _minsmallpacks=2
 214         done
 215         return 0
 216 }
 217
 218 # Unfortunately git-svn lacks the ability to store newly fetched revisions as a pack.
 219 # However, the fetch code conveniently sets .svnpack just before it runs git-svn fetch
 220 # so that it's easy to find all the objects that have been fetched by git-svn and
 221 # combine them into a pack.  The --no-reuse-delta option is meaningless here since
 222 # everything to be packed is a loose object and therefore not a delta so deltification
 223 # will always take place.
 224 make_svn_pack() {
 225         [ -f .svnpack ] && [ -n "$svn_mirror" ] || return 0
 226         rm -f .svnpackgc
 227         mv -f .svnpack .svnpackgc
 228         progress "~ [$proj] combining loose git-svn objects into a pack"
 229         _newp="$(find objects/$octet -maxdepth 1 -type f -newer .svnpackgc -name "$octet19" -print 2>/dev/null |
 230         LC_ALL=C awk -F / '{print $2 $3}' |
 231         run_combine_packs --objects --names $packopts --incremental --all-progress-implied $quiet --non-empty)" || {
 232                 mv -f .svnpackgc .svnpack
 233                 >.gc_failed
 234                 return 1
 235         }
 236         if [ -n "$_newp" ]; then
 237                 # remove the now-redundant loose objects -- this is always safe
 238                 # even during a concurrent push because a reprepare_packed_git
 239                 # will be triggered if an object that should be there is not
 240                 # found thereby finding it in the new pack instead
 241                 git prune-packed $quiet
 242         fi
 243         rm -f .svnpackgc
 244 }
 245
 246 # HEADSHA="$(pack_is_complete /full/path/to/some.pack /full/path/to/packed-refs "$(cat HEAD)")"
 247 pack_is_complete() {
 248         # Must have a matching .idx file and a non-empty packed-refs file
 249         [ -s "${1%.pack}.idx" ] || return 1
 250         [ -s "$2" ] || return 1
 251         _headsha=
 252         case "$3" in
 253                 $octet20)
 254                         _headsha="$3"
 255                         ;;
 256                 "ref: refs/"?*|"ref:refs/"?*|"refs/"?*)
 257                         _headmatch="${3#ref:}"
 258                         _headmatch="${_headmatch# }"
 259                         _headmatchpat="$(echo "$_headmatch" | LC_ALL=C sed -e 's/\([.$]\)/\\\1/g')"
 260                         _headsha="$(LC_ALL=C grep -e "^$octet20 $_headmatchpat\$" <"$2" |
 261                                     LC_ALL=C cut -d ' ' -f 1)"
 262                         case "$_headsha" in $octet20) :;; *)
 263                                 return 1
 264                         esac
 265                         ;;
 266                 *)
 267                         # bad HEAD
 268                         return 1
 269         esac
 270         rm -rf pack_is_complete_test
 271         mkdir pack_is_complete_test
 272         mkdir pack_is_complete_test/refs
 273         mkdir pack_is_complete_test/objects
 274         mkdir pack_is_complete_test/objects/pack
 275         echo "$_headsha" >pack_is_complete_test/HEAD
 276         ln -s "$1" pack_is_complete_test/objects/pack/
 277         ln -s "${1%.pack}.idx" pack_is_complete_test/objects/pack/
 278         ln -s "$2" pack_is_complete_test/packed-refs
 279         _count="$(git --git-dir=pack_is_complete_test rev-list --count --all 2>/dev/null)" || :
 280         rm -rf pack_is_complete_test
 281         [ -n "$_count" ] || return 1
 282         [ "$_count" -gt 0 ] 2>/dev/null || return 1
 283         echo "$_headsha"
 284 }
 285
 286 # On return a "$lockf" will have been created that must be removed when gc is done
 287 lock_gc() {
 288         # be compatibile with gc.pid file from newer Git releases
 289         lockf=gc.pid
 290         hn="$(hostname)"
 291         active=
 292         if [ "$(createlock "$lockf")" ]; then
 293                 # If $lockf is:
 294                 #   1) less than 12 hours old
 295                 #   2) contains two fields (pid hostname) NO trailing NL
 296                 #   3) the hostname is different OR the pid is still alive
 297                 # then we exit as another active process is holding the lock
 298                 if [ "$(find "$lockf" -maxdepth 1 -mmin -720 -print 2>/dev/null)" ]; then
 299                         apid=
 300                         ahost=
 301                         read -r apid ahost ajunk <"$lockf" || :
 302                         if [ "$apid" ] && [ "$ahost" ]; then
 303                                 if [ "$ahost" != "$hn" ] || pidactive "$apid"; then
 304                                         active=1
 305                                 fi
 306                         fi
 307                 fi
 308         else
 309                 echo >&2 "[$proj] unable to create gc.pid.lock file"
 310                 exit 1
 311         fi
 312         if [ -n "$active" ]; then
 313                 rm -f "$lockf.lock"
 314                 echo >&2 "[$proj] gc already running on machine '$ahost' pid '$apid'"
 315                 exit 1
 316         fi
 317         printf "%s %s" "$$" "$hn" >"$lockf.lock"
 318         chmod 0664 "$lockf.lock"
 319         mv -f "$lockf.lock" "$lockf"
 320 }
 321
 322 # Create a repack subdirectory such that running repack in it will pack the
 323 # same things that a pack in the normal directory would except that the pack
 324 # is guaranteed to be generated in an optimized order by adding a suitable
 325 # synthesized ref in the refs/tags namespace (yes, pack-objects.c really does
 326 # behave differently depending on the contents of the refs/tags namespace).
 327 # Before calling this, pack-refs --all MUST be performed or the wrong pack
 328 # will end up being made.
 329 # If a ref deletion is pushed after making the repack subdir but before the
 330 # the actual repack, the discarded objects will be packed -- no big deal,
 331 # they'll get discarded the next time gc runs.
 332 # If a fast-forward ref update is pushed after making the repack subdir but
 333 # before the actual repack, it will be picked up and the new objects packed
 334 # (subject to the normal git repack race about picking such updates up).
 335 # If a non-fast-forward ref update is pushed after making the repack subdir but
 336 # before the actual repack, it will be picked up like a fast-forward update but
 337 # the discarded objects will be included like a ref deletion (until the next
 338 # scheduled gc takes place).
 339 make_repack_dir() {
 340         ! [ -d repack ] || rm -rf repack
 341         ! [ -d repack ] || { echo >&2 "[$proj] cannot remove repack subdirectory"; exit 1; }
 342         mkdir repack repack/refs
 343         [ -d info ] || mkdir info
 344         ln -s ../config  repack/config
 345         ln -s ../info    repack/info
 346         ln -s ../objects repack/objects
 347         ln -s ../../refs repack/refs/refs
 348         _lines=$(( $(LC_ALL=C wc -l <packed-refs) ))
 349         sed 's, refs/, refs/!/,' <packed-refs >repack/packed-refs
 350         headref="$(git rev-parse --verify --quiet HEAD)" || :
 351         if [ -n "$headref" ]; then
 352                 echo "$headref refs/heads/!!" >>repack/packed-refs
 353                 _lines=$(( $_lines + 1 ))
 354         fi
 355         optref="$(git rev-list -n 1 --all 2>/dev/null)" || :
 356         if [ -n "$optref" ]; then
 357                 echo "$optref refs/tags/!" >>repack/packed-refs
 358                 _lines=$(( $_lines + 1 ))
 359                 echo "$optref" >repack/HEAD
 360         else
 361                 cat HEAD >repack/HEAD
 362         fi
 363         if [ $(LC_ALL=C wc -l <repack/packed-refs) -ne "$_lines" ]; then
 364                 echo >&2 "[$proj] error: make_repack_dir failed packed-refs line count sanity check"
 365                 exit 1
 366         fi
 367 }
 368
 369 # Remove any crud that's been left behind by interrupted operations
 370 # that did not clean up after themselves
 371 remove_crud() {
 372         # Remove any existing FETCH_HEAD
 373         # There can only be a FETCH_HEAD if we've been fetching, not if we've been
 374         # receiving pushes (those never create a FETCH_HEAD).
 375         # And if we're fetching because we're a mirror, we know we're not fetching right
 376         # now since jobd.pl never runs a project's fetch simultaneously with its gc.
 377         # Therefore any existing FETCH_HEAD is junk.  And it may be many megabytes if
 378         # there were a lot of refs.
 379         rm -f FETCH_HEAD
 380
 381         # remove any existing pack_is_complete_test or repack subdirectories
 382         # If either exists when this function is called it's crud
 383         rm -rf pack_is_complete_test repack
 384
 385         # Remove any stale pack remnants that are more than an hour old.
 386         # Stale pack fragments are defined as any pack-<sha1>.ext where .ext is NOT
 387         # .pack AND the corresponding .pack DOES NOT exist.  A bunch of stale
 388         # pack-<sha1>.idx files without their corresponding .pack files are worthless
 389         # and just waste space.  Normally there shouldn't be any remnants but actually
 390         # this can happen when things are interrupted at just the wrong time.
 391         # Note that the objects/pack directory is created by git init and should
 392         # always exist.
 393         find objects/pack -maxdepth 1 -type f -mmin +60 -name "pack-$octet20.?*" -print |
 394         LC_ALL=C sed -e 's/^objects\/pack\/pack-//; s/\..*$//' | LC_ALL=C sort -u |
 395         while read packsha; do
 396                 ! [ -e "objects/pack/pack-$packsha.pack" ] || continue
 397                 rm -f "objects/pack/pack-$packsha".?*
 398         done
 399
 400         # Remove any stale tmp reflogs files that are more than one hour old.
 401         # Since they are created only while the pre-receive hook is running and
 402         # all it does is process a bunch of refs passed to it on standard input
 403         # it's inconceivable that it would ever take as much as an hour to run.
 404         if [ -d reflogs ]; then
 405                 find reflogs -maxdepth 1 -type f -mmin +60 -name "tmp_*" -exec rm -f '{}' + || :
 406         fi
 407
 408         # Remove any stale object tmp_obj_* files that are more than 3 hours old.
 409         # Really these files should only exist very briefly so there shouldn't be any
 410         # but things happen that can end up leaving them behind.
 411         find objects/$octet -maxdepth 1 -type f -mmin +180 -name "tmp_obj_?*" -exec rm -f '{}' + 2>/dev/null || :
 412
 413         # Remove any stale pack .keep files that are more than 12 hours old.
 414         # We don't do anything to create any permanent pack .keep files, so they must
 415         # be remnants from some failed push or something.  Removing the .keep will
 416         # allow the pack to be properly repacked.
 417         find objects/pack -maxdepth 1 -type f -mmin +720 -name "pack-$octet20.keep" -exec rm -f '{}' + || :
 418
 419         # Remove any stale tmp_pack_*, tmp_idx_*, tmp_bitmap_*, packtmp-* or .tmp-*-pack* files
 420         # that are more than 12 hours old.
 421         find objects/pack -maxdepth 1 -type f -mmin +720 \( \
 422                 -name "tmp_pack_?*" -o -name "tmp_idx_?*" -o -name "tmp_bitmap_?*" -o \
 423                 -name "packtmp-?*" -o -name ".tmp-?*-pack*" \
 424                 \) -exec rm -f '{}' + || :
 425
 426         # Remove any stale incoming-* object quarantine directories that are
 427         # more than 12 hours old.  These are new with Git >= 2.11.0.
 428         find objects -maxdepth 1 -type d -name 'incoming-?*' -mmin +720 \
 429                 -exec rm -rf '{}' + || :
 430
 431         # Remove any stale shallow_* files that are more than 12 hours old.
 432         # These can be left behind by Git >= 1.8.4.2 and < 2.0.0 when a client
 433         # requests a shallow clone.
 434         find . -maxdepth 1 -type f -mmin +720 -name "shallow_?*" -exec rm -f '{}' + || :
 435
 436         # Remove any stale *.temp files in the objects area that are more than 12 hours old.
 437         # This can be stale sha1.temp, or stale *.pack.temp so we kill all stale *.temp.
 438         find objects -type f -mmin +720 -name "*.temp" -exec rm -f '{}' + || :
 439
 440         # Remove any stale *.lock files in the htmlcache area that might have been left
 441         # behind after an abnormal exit during an attempt to update a cached file and
 442         # are more than 1 hour old.
 443         ! [ -d htmlcache ] || find htmlcache -type f -mmin +60 -name "*.lock" -exec rm -f '{}' + || :
 444
 445         # Remove any stale git-svn temp files that are more than 12 hours old.
 446         # The git-svn process creates temp files with random 10 character names
 447         # in the root of $GIT_DIR.  Unfortunately they do not have a recognizable
 448         # prefix, so we just have to kill any files with a 10-character name.  We
 449         # do this only for git-svn mirrors.  All characters are chosen from
 450         # [A-Za-z0-9_] so we can at least check that and fortunately the only
 451         # collision is 'FETCH_HEAD' but that shouldn't matter.
 452         # There may also be temp files with a Git_ prefix as well.
 453         if [ -n "$svn_mirror" ]; then
 454                 _randchar='[A-Za-z0-9_]'
 455                 _randchar2="$_randchar$_randchar"
 456                 _randchar4="$_randchar2$_randchar2"
 457                 _randchar10="$_randchar4$_randchar4$_randchar2"
 458                 find . -maxdepth 1 -type f -mmin +720 -name "$_randchar10" -exec rm -f '{}' + || :
 459                 find . -maxdepth 1 -type f -mmin +720 -name "Git_*" -exec rm -f '{}' + || :
 460         fi
 461
 462         # Remove any stale fast_import_crash_<pid> files that are more than 3 days old.
 463         if [ -n "$gfi_mirror" ]; then
 464                 find . -maxdepth 1 -type f -mmin +4320 -name "fast_import_crash_?*" -exec rm -f '{}' + || :
 465         fi
 466
 467         # Remove any stale core or *.core or core.* files that are more than 3 days old.
 468         find . -maxdepth 1 -type f -mmin +4320  \( -name "core" -o -name "*.core" -o -name "core.*" \) \
 469                 -exec rm -f '{}' + || :
 470 }
 471
 472 #
 473 ## Garbage Collection Types
 474 ##
 475 ## There are two kinds of possible garbage collection (gc) operations:
 476 ##
 477 ## 1.  A normal, full gc
 478 ## 2.  A "mini" gc
 479 ##
 480 ## If the full garbage collection interval has expired (or gc has never been
 481 ## run), then a normal, full gc will take place.  Otherwise, a "mini" gc will
 482 ## take place if the file .needsgc exists.
 483 ##
 484 ## A "mini" gc is similar to "git gc --auto" in that it may not end up actually
 485 ## doing anything unless the right conditions are present so it's not a burden
 486 ## to run it often.  If the file .needsgc exists, a "mini" gc will occur at
 487 ## the next opportunity.
 488 ##
 489 ## Note, however, that the .nogc file suppresses ALL gc activity (normal or mini).
 490 #
 491
 492 proj="${1%.git}"
 493 shift
 494 cd "$cfg_reporoot/$proj.git"
 495 [ -d objects/pack ] || { rm -f gfi-packs; mkdir -p objects/pack; }
 496 mirror_url="$(get_mirror_url)"
 497 svn_mirror=
 498 ! is_svn_mirror_url "$mirror_url" || svn_mirror=1
 499 gfi_mirror=
 500 if [ -f gfi-packs ] && [ -s gfi-packs ] && is_gfi_mirror_url "$mirror_url"; then
 501         gfi_mirror=1
 502 fi
 503
 504 # If git config --bool --get girocco.redelta is explicitly false then automatic
 505 # redelta when there are less than $var_redelta_threshold objects will be suppressed.
 506 # On the other hand, if git config --get girocco.redelta is "always" then, on a full
 507 # gc only, for the final repack, deltas will always be recomputed.
 508 # This can be set on a per-project basis to avoid unusual pathological gc behavior.
 509 # Setting this will hurt efficiency of the affected repository.
 510 # Note that fast-import packs ALWAYS get new deltas regardless of this setting.
 511 noreusedeltaopt="--no-reuse-delta"
 512 [ "$(git config --bool --get girocco.redelta 2>/dev/null || :)" != "false" ] || noreusedeltaopt=
 513 alwaysredelta=
 514 [ "$(git config --get girocco.redelta 2>/dev/null || :)" != "always" ] || alwaysredelta=1
 515
 516 trap 'e=$?; rm -f .gc_in_progress; if [ $e != 0 ]; then echo "gc failed dir: $PWD" >&2; fi' EXIT
 517 trap 'exit 130' INT
 518 trap 'exit 143' TERM
 519
 520 # date -R is linux-only, POSIX equivalent is '+%a, %d %b %Y %T %z'
 521 datefmt='+%a, %d %b %Y %T %z'
 522
 523 isminigc=
 524 if [ "${force_gc:-0}" = "0" ] && check_interval lastgc $cfg_min_gc_interval; then
 525         if [ -e .needsgc ]; then
 526                 isminigc=1
 527         else
 528                 progress "= [$proj] garbage check skip (last at $(config_get lastgc))"
 529                 exit 0
 530         fi
 531 fi
 532 if [ -e .nogc ]; then
 533         progress "x [$proj] garbage check disabled"
 534         exit 0
 535 fi
 536
 537 if [ -n "$isminigc" ]; then
 538         # Perform a "mini" gc
 539         # Note that .delaygc is ignored here as that's only intended for full gc
 540         lock_gc
 541         rm -f .allowgc .needsgc
 542         remove_crud
 543         coalesce_reflogs
 544         prune_reflogs
 545         compact_reflogs
 546         miniactive=
 547         if [ -f .svnpack ] && [ -n "$svn_mirror" ]; then
 548                 miniactive=1
 549                 progress "+ [$proj] mini garbage check ($(date))"
 550                 make_svn_pack
 551         fi
 552         if [ -z "$cfg_delay_gfi_redelta" ] && [ -n "$gfi_mirror" ]; then
 553                 # $Girocco::Config::delay_gfi_redelta is false, force redeltification now
 554                 if [ -z "$miniactive" ]; then
 555                         miniactive=1
 556                         progress "+ [$proj] mini garbage check ($(date))"
 557                 fi
 558                 repack_gfi_packs
 559         fi
 560         # If there aren't at least 10 non-keep, non-bitmap, non-bndl packs then
 561         # don't actually process them yet
 562         lpo="--exclude-no-idx --exclude-keep --exclude-bitmap --exclude-bndl --quiet"
 563         packcnt="$(list_packs --count $lpo objects/pack)" || :
 564         if [ "${packcnt:-0}" -ge 10 ]; then
 565                 if [ -z "$miniactive" ]; then
 566                         miniactive=1
 567                         progress "+ [$proj] mini garbage check ($(date))"
 568                 fi
 569                 if [ -n "$gfi_mirror" ]; then
 570                         repack_gfi_packs
 571                         packcnt="$(list_packs --count $lpo objects/pack)" || :
 572                 fi
 573                 # if repack_gfi_packs dropped the pack count to < 10 don't combine
 574                 if [ "${packcnt:-0}" -ge 10 ]; then
 575                         combine_small_packs
 576                         packcnt="$(list_packs --count $lpo objects/pack)" || :
 577                 fi
 578                 # if we still have more than 10 packs trigger a full gc
 579                 if [ "${packcnt:-0}" -ge 10 ]; then
 580                         # We shouldn't be in a .delaygc state at this point, but if
 581                         # we are then nuke it because we really need a full gc now
 582                         rm -f .delaygc
 583                         git config --unset gitweb.lastgc
 584                         rm -f "$lockf"
 585                         progress "- [$proj] mini garbage check triggering full gc too many packs ($(date))"
 586                         exit 0
 587                 fi
 588         fi
 589         rm -f "$lockf"
 590         if [ -n "$miniactive" ]; then
 591                 git update-server-info
 592                 progress "- [$proj] mini garbage check ($(date))"
 593         else
 594                 progress "= [$proj] mini garbage check nothing but crud removal to do ($(date))"
 595         fi
 596         exit 0
 597 fi
 598
 599 # Avoid unnecessary garbage collections:
 600 #   1. If lastreceive is set and is older than lastgc
 601 #   -AND-
 602 #   2. We are not a fork (! -s alternates) -OR- lastparentgc is older than lastgc
 603
 604 # If lastgc is NOT set or lastreceive is NOT set we MUST run gc
 605 # If we are a fork and lastparentgc is NOT set we MUST run gc
 606
 607 # If the repo is dirty after removing any crud we MUST run gc
 608
 609 gcstart="$(date "$datefmt")"
 610 skipgc=
 611 isfork=
 612 ! [ -s objects/info/alternates ] || isfork=1
 613 lastparentgcsecs=
 614 [ -z "$isfork" ] || lastparentgcsecs="$(config_get_date_seconds lastparentgc)" || :
 615 lastreceivesecs=
 616 if lastreceivesecs="$(config_get_date_seconds lastreceive)" &&
 617    [ "${force_gc:-0}" = "0" ] &&
 618    lastgcsecs="$(config_get_date_seconds lastgc)" &&
 619    [ $lastreceivesecs -lt $lastgcsecs ]; then
 620         # We've run gc since we last received, so maybe we can skip,
 621         # check if not fork or fork and lastparentgc < lastgc
 622         if [ -n "$isfork" ]; then
 623                 if [ -n "$lastparentgcsecs" ] &&
 624                    [ $lastparentgcsecs -lt $lastgcsecs ]; then
 625                         # We've run gc since our parent ran gc so we can skip
 626                         skipgc=1
 627                 fi
 628         else
 629                 # We don't have any alternates (we're not a forK) so we can skip
 630                 skipgc=1
 631         fi
 632 fi
 633
 634 # Prevent any other simultaneous gc operations
 635 lock_gc
 636
 637 # At this point, if .allowgc exists, it's now crud to be removed
 638 rm -f .allowgc
 639
 640 # Ideally we would do this in post-receive, but that would mean duplicating the
 641 # logic so it's available in the chroot jail and that's highly undesirable
 642 # Instead, since the first gc will be triggered immediately following the first
 643 # push, we do the check here as it's quick and harmless if HEAD is already valid
 644 check_and_set_head || :
 645
 646 # Always get rid of crud
 647 remove_crud
 648
 649 # Always perform reflogs maintenance
 650 coalesce_reflogs
 651 prune_reflogs
 652 compact_reflogs
 653
 654 # Run 'git svn gc' now for svn mirrors
 655 if [ -n "$svn_mirror" ]; then
 656         git svn gc || :
 657 fi
 658
 659 # Skip the actual gc if .delaygc is set
 660 if [ -e .delaygc ]; then
 661         progress "x [$proj] garbage check delayed (except for crud removal)"
 662         rm -f "$lockf"
 663         exit 0
 664 fi
 665
 666 # Do not skip gc if the repo is dirty
 667 if [ -n "$skipgc" ] && ! is_dirty; then
 668         progress "= [$proj] garbage check nothing but crud removal to do ($(date))"
 669         config_set lastgc "$gcstart"
 670         rm -f "$lockf"
 671         exit 0
 672 fi
 673
 674 bumptime=
 675 if [ -n "$isfork" ] && [ -z "$lastparentgcsecs" ]; then
 676         # set lastparentgc and then update gcstart to be at least 1 second later
 677         config_set lastparentgc "$gcstart"
 678         bumptime=1
 679 fi
 680 if [ -z "$lastreceivesecs" ]; then
 681         # set lastreceive and then update gcstart to be at least 1 second later
 682         config_set lastreceive "$gcstart"
 683         bumptime=1
 684 fi
 685 if [ -n "$bumptime" ]; then
 686         sleep 1
 687         gcstart="$(date "$datefmt")"
 688 fi
 689
 690 progress "+ [$proj] garbage check ($(date))"
 691
 692 newdeltas=
 693 [ -z "$alwaysredelta" ] || newdeltas=-f
 694 for _arg in "$@"; do
 695         case "$_arg" in "-f"|"-F")
 696                 newdeltas="$_arg"
 697         esac
 698 done
 699 if [ -z "$newdeltas" ] && [ -n "$gfi_mirror" ]; then
 700         if [ $(list_packs --exclude-no-idx --count objects/pack) -le \
 701              $(list_packs --exclude-no-idx --count --quiet --only gfi-packs) ]; then
 702                 # Don't bother with repack_gfi_packs since everything's being repacked
 703                 newdeltas=-f
 704         fi
 705 fi
 706 if [ -z "$newdeltas" ] && [ -n "$noreusedeltaopt" ] &&
 707    [ $(list_packs --exclude-no-idx --count-objects objects/pack) -le $var_redelta_threshold ]; then
 708         # There aren't enough objects to worry about so just redelta to get the best pack
 709         newdeltas=-f
 710 fi
 711 if [ -z "$newdeltas" ]; then
 712         # Since we're not going to recompute deltas overall, we need to do the
 713         # "mini" maintenance so that we can get more optimal deltas
 714         [ -z "$noreusedeltaopt" ] || make_svn_pack
 715         repack_gfi_packs
 716         force_single_pack_redelta=
 717         [ -n "$gfi_mirror" ] || [ -n "$svn_mirror" ] || force_single_pack_redelta=1
 718         [ -z "$noreusedeltaopt" ] || combine_small_packs $force_single_pack_redelta
 719 fi
 720
 721 #
 722 ## Safe Pruning In Forks
 723 ##
 724 ## We are about to perform garbage collection.  We do NOT use the "git gc"
 725 ## command directly as it does not provide enough control over the fine details
 726 ## that we require.  However, we DO maintain a "gc.pid" file during our garbage
 727 ## collection so that a simultaneous "git gc" by an administrator will be
 728 ## blocked (and similarly we refuse to start garbage collection if we cannot
 729 ## create the "gc.pid" file).  When we say "gc" in the below description we are
 730 ## referring to our "gc.sh" script, NOT the "git gc" command.
 731 ##
 732 ## If the project we are running garbage collection (gc) on has any forks we
 733 ## must be careful not to remove any objects that while no longer referenced by
 734 ## this project (the parent) are still referenced by one or more forks (the
 735 ## children) otherwise the children will become corrupt and we can't abide
 736 ## corrupt children.
 737 ##
 738 ## One way to accomplish this is to simply hard-link all currently existing
 739 ## loose objects and packs in the parent into all the children that refer to the
 740 ## parent (via a line in their objects/info/alternates file) before beginning
 741 ## the gc operation and then relying on a subsequent gc in the child to clean up
 742 ## any excess objects/packs.  We used to use this strategy but it's very
 743 ## inefficient because:
 744 ##
 745 ##   1. The disk space used by the old pack(s)/object(s) will not be reclaimed
 746 ##      until all children (and their children, if any) run gc by which time
 747 ##      it's quite possible the topmost parent will have run gc again and
 748 ##      hard-linked yet another old pack down to its children (not to mention
 749 ##      loose objects).
 750 ##
 751 ##   2. As we are now using the "-A" option with "git repack", any new objects
 752 ##      in the parent that are not referenced by children will continually get
 753 ##      exploded out of the hard-linked pack in the children whenever the
 754 ##      children run gc.
 755 ##
 756 ##   3. To avoid suboptimal and/or unnecessarily many packs being hard-linked
 757 ##      into child forks, we must run the "mini" gc maintenance before we
 758 ##      perform the hard-linking into the children which provides yet another
 759 ##      source of inefficiency.
 760 ##
 761 ## Since we are using the "-A" option to "git repack" (that was not always the
 762 ## case) to guarantee we can access old ref values for long enough to send out
 763 ## a meaningful mail.sh notification, we now have another, more efficient,
 764 ## option available to prevent corruption of child forks that continue to refer
 765 ## to objects that are no longer reachable from any ref in the parent.
 766 ##
 767 ## The only things that need be copied (or hard-linked) into the child fork(s)
 768 ## are those objects that have become unreachable from any ref in the parent.
 769 ## They are the only things that could ever be removed by "git prune" and
 770 ## therefore the only things we need to prevent the loss of in order to avoid
 771 ## corruption of the child fork(s).
 772 ##
 773 ## Therefore we now use the following strategy instead to avoid excessive disk
 774 ## use and lots of unnecessary loose objects in child forks:
 775 ##
 776 ##   1. Run "git repack -A -d -l" in the parent BEFORE doing anything about
 777 ##      child forks.
 778 ##
 779 ##   2. Hard-link all remaining existing loose objects in the parent into the
 780 ##      immediate child forks.
 781 ##
 782 ##   3. Now run "git prune" in the parent.
 783 ##
 784 ## With this new strategy we avoid the need to run any "mini" gc maintenance
 785 ## before copying (or hard-linking) anything down to the child forks.
 786 ## Furthermore, only when the parent performs a non-fast-forward update will
 787 ## anything ever be transferred to the children leaving them unperturbed in the
 788 ## vast majority of cases.  Finally, even if the parent references objects the
 789 ## children do not, those objects will no longer continually end up in the
 790 ## children as unreachable loose objects after the children run gc.
 791 #
 792
 793 git pack-refs --all
 794 make_repack_dir
 795 touch .gc_in_progress
 796 rm -f .gc_failed bundles/*
 797 rm -f objects/pack/pack-*.bndl
 798 # We use the -A option with git repack so that unreachable objects can live
 799 # on for a time as loose objects.  This is particularly helpful if we just
 800 # happen to be in the process of sending out a ref update for a ref that was
 801 # force updated and the old ref value would have otherwise been removed by
 802 # repack because it was now unreachable.  Admittedly the window for gc to run
 803 # and do that before we manage to send out the ref update is not large, but
 804 # it would not be difficult to create such a situation.  Unfortunately, when
 805 # Git unpacks these unreachable objects it will give them the modification
 806 # time of the *.pack file they came out of.  This could be very, very old.
 807 # If that happens, the subsequent git prune --expire some_time_ago will still
 808 # remove the object(s) and our pending ref update will still lose out.
 809 # To prevent this from happening and to get the behavior we want, we now
 810 # touch the modification time of all pack-<sha>.pack files so that any
 811 # loosened objects get a current time.  Git does not provide any other
 812 # mechanism to do this.  We do not want to just touch all loose objects
 813 # left after the repack because that would cause objects that were loosened
 814 # previously to live on which we definitely do not want.
 815 list_packs --exclude-no-idx objects/pack | xargs touch -c 2>/dev/null || :
 816 # We wish to keep deltas from our last full pack so if we're not redeltaing
 817 # then make sure the .pack associated with the .bitmap has a newer mod time
 818 # (If there is no .bitmap then touch the pack with the most objects instead.)
 819 if [ -z "$newdeltas" ]; then
 820         bmpack="$(list_packs --exclude-no-bitmap --exclude-no-idx --max-matches 1 objects/pack)"
 821         [ -n "$bmpack" ] || bmpack="$(list_packs --exclude-no-idx --max-matches 1 --object-limit -1 --include-boundary objects/pack)"
 822         if [ -n "$bmpack" ] && [ -f "$bmpack" ] && [ -s "$bmpack" ]; then
 823                 sleep 1
 824                 touch -c "$bmpack" 2>/dev/null || :
 825         fi
 826 fi
 827 # The git repack command only supports bitmaps if all objects are being packed.
 828 # While it is theoretically possible that a project with a non-empty alternates
 829 # file ends up packing all objects (because it does not actually use any of the
 830 # objects found in the alternates), it's very unlikely.  And, in the unlikely
 831 # event that did occur, clients would see a message about only using one bitmap
 832 # because Git can only use one bitmap at a time and at least one of the
 833 # alternates is bound to have a bitmap.  Therefore if we see a non-empty
 834 # alternates file, we disable writing bitmaps which avoids the warning and any
 835 # possibility of a client warning as well.
 836 nobm=
 837 [ -z "$var_have_git_172" ] || ! [ -s objects/info/alternates ] ||
 838         nobm='-c repack.writebitmaps=false -c pack.writebitmaps=false'
 839 progress "~ [$proj] running full gc repack${nobm:+ (bitmaps disabled)}"
 840 cd repack
 841 # We run git repack from the repack subdirectory so we can force optimized packs
 842 # to be generated even for repositories that do not have any tagged commits
 843 git $nobm repack $packopts -A -d -l $quiet $newdeltas $@
 844 cd ..
 845 rm -rf repack
 846 ! [ -e .gc_failed ] || exit 1
 847 # These, if they exist, are now meaningless and need to be removed
 848 rm -f gfi-packs .needsgc .svnpack .svnpackgc
 849 allpacks="$(echo objects/pack/pack-$octet20.pack)"
 850 curhead="$(cat HEAD)"
 851 pkrf=
 852 ! [ -e packed-refs ] || pkrf=packed-refs
 853 eval "reposizek=$(( $(echo 0 $(du -k $pkrf $allpacks 2>/dev/null | LC_ALL=C awk '{print $1}') |
 854         LC_ALL=C sed -e 's/ / + /g') ))"
 855 git update-server-info
 856 # The -A option to `git repack` may have caused some loose objects to pop
 857 # out of their packs.  We must make these objects group writable so that they
 858 # can be freshened by other pushers.  Technically we need only do this for
 859 # push projects but to enable mirror projects to be more easily converted to
 860 # push projects, we go ahead and do it for all projects.
 861 { find objects/$octet -type f -name "$octet19" -exec chmod ug+w '{}' + || :; } 2>/dev/null
 862
 863 if has_forks "$proj"; then
 864         progress "~ [$proj] hard-linking loose objects into immediate child forks"
 865         # We have to update the lastparentgc time in the child forks even if they do not get any
 866         # new "loose objects" because they need to run gc just in case the parent now has some
 867         # objects that used to only be in the child so they can be removed from the child.
 868         # For example, a "patch" might be developed first in a fork and then later accepted into
 869         # the parent in which case the objects making up the patch in the child fork are now
 870         # redundant (since they're now in the parent as well) and need to be removed from the
 871         # child fork which can only happen if the child fork runs gc.
 872         forkdir="$proj"
 873         # It is enough to copy objects just one level down and get_repo_list
 874         # takes a regular expression (which is automatically prefixed with '^')
 875         # so we can easily match forks exactly one level down from this project
 876         get_repo_list "$forkdir/[^/]*:" |
 877                 while read fork; do
 878                         # Ignore forks that do not exist or are symbolic links
 879                         ! [ -L "$cfg_reporoot/$fork.git" ] && [ -d "$cfg_reporoot/$fork.git" ] ||
 880                                 continue
 881                         # Or do not have a non-zero length alternates file
 882                         [ -s "$cfg_reporoot/$fork.git/objects/info/alternates" ] ||
 883                                 continue
 884                         # Match objects in parent project
 885                         for d in objects/$octet; do
 886                                 [ "$d" != "objects/$octet" ] || continue
 887                                 mkdir -p "$cfg_reporoot/$fork.git/$d"
 888                                 find "$d" -maxdepth 1 -type f -name "$octet19" -exec \
 889                                         "$var_sh_bin" -c 'ln -f "$@" '"'$cfg_reporoot/$fork.git/$d/'" sh '{}' + || :
 890                         done
 891                         # Update the fork's lastparentgc date (must be current, not $gcstart)
 892                         git --git-dir="$cfg_reporoot/$fork.git" config \
 893                                 gitweb.lastparentgc "$(date "$datefmt")"
 894                 done
 895 fi
 896
 897 # The git prune command does not take a -q or --quiet but started outputting
 898 # 'Checking connectivity' progress messages in v1.7.9.  However, we can
 899 # suppress those by piping through cat as it only activates the progress
 900 # messages when stderr is a tty.  We only expire loose objects older than one
 901 # day just in case there's some pending action (such as sending out a ref
 902 # update) in progress that might want to examine them.  This may leave us with
 903 # loose objects.  That's okay because at the next gc interval, we will always
 904 # run gc if we see any loose objects regardless of whether or not we've seen
 905 # any updates or we've received new linked objects from our parent.  Note that
 906 # in order to keep loose objects that just recently became unreferenced but
 907 # have a very old modification date around we rely on some help from both the
 908 # update.sh and hooks/pre-receive scripts.  Furthermore, since Git v2.2.0
 909 # (d3038d22 prune: keep objects reachable from recent objects) an unreachable
 910 # object that would otherwise be pruned (because it's too old) will be kept
 911 # alive by an unreachable object that refers to it that's not old enough to
 912 # be pruned yet.
 913 prunecmd='git prune --expire 1_day_ago'
 914 [ -n "$show_progress" ] ||
 915 prunecmd="{ $prunecmd 2>&1 || touch .gc_failed; } | cat"
 916 progress "~ [$proj] pruning expired unreachable loose objects"
 917 eval "$prunecmd"
 918 ! [ -e .gc_failed ] || exit 1
 919
 920 # darcs:// mirrors have a xxx.log file that will grow endlessly
 921 # if this is a mirror and the file exists, shorten it to 10000 lines
 922 # also take this opportunity to optimize the darcs repo
 923 if ! [ -e .nofetch ] && [ -n "$cfg_mirror" ]; then
 924         url="$(config_get baseurl)" || :
 925         case "$url" in darcs://*)
 926                 if [ -n "$cfg_mirror_darcs" ]; then
 927                         url="${url%/}"
 928                         basedarcs="$(basename "${url#darcs:/}")"
 929                         if [ -f "$basedarcs.log" ]; then
 930                                 tail -n 10000 "$basedarcs.log" >"$basedarcs.log.$$"
 931                                 mv -f "$basedarcs.log.$$" "$basedarcs.log"
 932                         fi
 933                         if [ -d "$basedarcs.darcs" ]; then
 934                                 (
 935                                         cd "$basedarcs.darcs"
 936                                         # without show_progress suppress non-error output
 937                                         [ -n "$show_progress" ] || exec >/dev/null
 938                                         # Note that this does not optimize _darcs/inventories/ :(
 939                                         darcs optimize || :
 940                                 )
 941                         fi
 942                 fi
 943         esac
 944 fi
 945
 946 # Create a matching .bndl header file for the all-in-one pack we just created
 947 # but only if we're not a fork (otherwise the bundle would not be complete)
 948 # and we are running at least Git version 1.7.2 (pack_is_complete always fails otherwise)
 949 if ! [ -s objects/info/alternates ] && [ -n "$var_have_git_172" ]; then
 950         # There should only be one pack in $allpacks but if there was a
 951         # simultaneous push...
 952         # The one we just created will have a .idx and will NOT have a .keep
 953         progress "~ [$proj] creating downloadble bundle header"
 954         pkfound=
 955         pkhead=
 956         for pk in $allpacks; do
 957                 [ -s "$pk" ] || continue
 958                 pkbase="${pk%.pack}"
 959                 [ -s "$pkbase.idx" ] || continue
 960                 ! [ -e "$pkbase.keep" ] || continue
 961                 if pkhead="$(pack_is_complete "$PWD/$pk" "$PWD/packed-refs" "$curhead")"; then
 962                         pkfound="$pkbase"
 963                         break;
 964                 fi
 965         done
 966         if [ -n "$pkfound" ] && [ -n "$pkhead" ]; then
 967                 {
 968                         symref=
 969                         case "$curhead" in "ref: refs/"?*|"ref:refs/"?*|"refs/"?*)
 970                                 symref="${curhead#ref:}"
 971                                 symref="${symref# }"
 972                         esac
 973                         bndlurl=
 974                         [ -z "$cfg_httpbundleurl" ] || bndlurl=" url=$cfg_httpbundleurl/$proj.git/clone.bundle"
 975                         echo "# v2 git bundle"
 976                         LC_ALL=C sed -ne "/^$octet20 refs\/[^ $tab]*\$/ p" <packed-refs
 977                         if [ -n "$symref" ]; then
 978                                 printf "$pkhead HEAD\0symref=HEAD:%s%s\n" "$symref" "$bndlurl"
 979                         else
 980                                 if [ -n "$bndlurl" ]; then
 981                                         printf "$pkhead HEAD\0%s\n" "${bndlurl:# }"
 982                                 else
 983                                         echo "$pkhead HEAD"
 984                                 fi
 985                         fi
 986                         echo ""
 987                 } >"$pkbase.bndl"
 988                 bndletag="$("$cfg_basedir/bin/rangecgi" --etag -m 1 "$pkbase.bndl" "$pkbase.pack")" || :
 989                 bndlsha="$(printf '%s' "$bndletag" | git hash-object --stdin)" || :
 990                 if [ -n "$bndletag" ]; then
 991                         case "$bndlsha" in $octet20)
 992                                 bndlshatrailer="${bndlsha#????????}"
 993                                 bndlshaprefix="${bndlsha%$bndlshatrailer}"
 994                                 bndlname="$(TZ=UTC date +%Y%m%d_%H%M%S)-${bndlshaprefix:-0}"
 995                                 [ -d bundles ] || mkdir bundles
 996                                 echo "${pkbase#objects/pack/}.bndl" >"bundles/$bndlname"
 997                                 echo "${pkbase#objects/pack/}.pack" >>"bundles/$bndlname"
 998                                 ln -s -f -n "$bndlname" bundles/latest
 999                         esac
1000                 fi
1001         fi
1002 fi
1003
1004 # Record the size of this repo as the sum of its *.pack sizes as 1024-byte blocks
1005 config_set_raw girocco.reposizek "${reposizek:-0}"
1006
1007 # We use $gcstart here to avoid a race where a push occurs during the gc itself
1008 # and the next future gc could be incorrectly skipped if we used the current
1009 # timestamp here instead
1010 config_set lastgc "$gcstart"
1011 rm -f "$lockf"
1012
1013 progress "- [$proj] garbage check ($(date))"