├── COPYING ├── Makefile ├── README.md ├── c └── crfs-plugin.c └── go ├── crfs-plugin.go ├── go.mod └── go.sum /COPYING: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | PREFIX ?= /usr/local 2 | FUSE_OVERLAYFS ?= fuse-overlayfs 3 | 4 | crfs-plugin.so: $(FUSE_OVERLAYFS)/config.h go/go.a c/crfs-plugin.c 5 | $(CC) -shared -I $(FUSE_OVERLAYFS) \ 6 | $(FUSE_OVERLAYFS)/utils.c \ 7 | -I ./go -fPIC \ 8 | c/crfs-plugin.c \ 9 | go/go.a -l pthread \ 10 | -o $@ 11 | 12 | install: crfs-plugin.so 13 | /usr/bin/install -dD $(PREFIX)/libexec/fuse-overlayfs/ 14 | /usr/bin/install -c crfs-plugin.so -D $(PREFIX)/libexec/fuse-overlayfs/ 15 | 16 | $(FUSE_OVERLAYFS): 17 | git clone https://github.com/containers/fuse-overlayfs 18 | 19 | $(FUSE_OVERLAYFS)/config.h: $(FUSE_OVERLAYFS) 20 | (cd $(FUSE_OVERLAYFS); ./autogen.sh; ./configure) 21 | touch $@ 22 | 23 | go/go.a: go/crfs-plugin.go 24 | (cd go; GO111MODULE=on go build -buildmode=c-archive) 25 | 26 | clean: 27 | rm -f crfs-plugin.so go/go.a 28 | 29 | .PHONY: clean 30 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # crfs-plugin 2 | 3 | A [fuse-overlayfs](https://github.com/containers/fuse-overlayfs/) 4 | plugin for using [CRFS](https://github.com/google/crfs) for loading 5 | lower layers. 6 | 7 | This is still experimental, use at your own risk. 8 | 9 | # Build 10 | 11 | You need to have both the Go toolchain and the C compiler installed. 12 | Use `make` from the upper directory for building `crfs-plugin`: 13 | 14 | ``` 15 | $ make 16 | ``` 17 | 18 | If everything worked correctly and all the needed dependencies were 19 | present, the build generates a single `crfs-plugin.so` artifact that 20 | can be directly used from fuse-overlayfs. 21 | 22 | You need to use fuse-overlayfs with plugins support from: 23 | 24 | https://github.com/containers/fuse-overlayfs/pull/119 25 | 26 | # Build a CRFS image 27 | 28 | Before using `crfs-plugin`, you need to have a CRFS image. 29 | 30 | To create one, you can use: 31 | 32 | [stargzify](https://github.com/google/crfs/blob/master/stargz/stargzify/stargzify.go). 33 | 34 | You can install it with: 35 | 36 | ``` 37 | $ go get -u github.com/google/crfs/stargz/stargzify 38 | ``` 39 | 40 | Once stargzify is installed, you can convert a image to the .stargz 41 | format with: 42 | ``` 43 | $ stargzify docker.io/fedora localhost:5000/myimages/fedora:stargz 44 | ``` 45 | 46 | # Usage 47 | 48 | There are a few new options needed to pass to fuse-overlays to 49 | work with `crfs-plugin`: 50 | 51 | - `fast_ino=1`: force fuse-overlayfs to stop looking for an inode 52 | number after the first one found during the lookup. 53 | - `plugins=/path/a.so:/path2/b.so`: list of plugins that 54 | fuse-overlayfs loads and can be used to handle lower layers. 55 | - `lowerdir=//$PLUGIN/$CONF/lowerdirpath`: when a lowerdir path starts 56 | with `//`, fuse-overlay uses the plugin `$PLUGIN` to manage 57 | `lowerdir` with the specified configuration `$CONF`, that is 58 | specific to the plugin. 59 | For `crfs-plugin`, the configuration is the image/layer to use in 60 | base64 encoding. 61 | 62 | Accepted configuration strings are: 63 | 64 | - https://www.example.com/layer.stargz: use directly the layer at the URL. 65 | - docker://docker.io/image:stargz: use the image at the specified registry. 66 | - /path/to/the/file.stargz: use the file as a .stargz layer. 67 | 68 | The easiest way run fuse-overlayfs is from a user namespace (or if you 69 | like danger, directly as root user). 70 | 71 | When an image `docker://` is used, `fuse-overlayfs` will internally 72 | create more lower layers depending on how many there are present in 73 | the image. 74 | 75 | `podman unshare` can be helpful to create a user+mount namespace that 76 | can be used by an unprivileged user. 77 | 78 | ``` 79 | $ podman unshare 80 | # mkdir lower upper workdir merged 81 | # fuse-overlayfs -o fast_ino=1,plugins=/path/to/crfs-plugin.so,lowerdir=//crfs/$(echo -n docker://localhost:5000/myimages/fedora:stargz | base64 -w0)/$(pwd)/lower,upperdir=upper,workdir=work merged 82 | # podman run --rm -ti --rootfs $(pwd)/merged echo hello 83 | ``` 84 | 85 | It is possible to use directly a URL for retrieving a `.stargz` 86 | layer. When the lowerdir location starts with the `https://` 87 | prefix, then the file at that URL will be used directly. 88 | 89 | ``` 90 | # fuse-overlayfs -o fast_ino=1,plugins=/path/to/crfs-plugin.so,lowerdir=//crfs/$(echo -n https://url/to/stargzified-layer.tar.gz | base64 -w0)/$(pwd)/lower,upperdir=upper,workdir=work merged 91 | ``` 92 | 93 | Alternatively, it is possible to use a local file: 94 | 95 | ``` 96 | # fuse-overlayfs -o fast_ino=1,plugins=/path/to/crfs-plugin.so,lowerdir=//crfs/$(echo -n /path/to/stargzified-layer.tar.gz | base64 -w0)/$(pwd)/lower,upperdir=upper,workdir=work merged 97 | ``` 98 | 99 | # Installation 100 | 101 | `make install` will install crfs-plugin.so under `$PREFIX/libexec/fuse-overlayfs/`. 102 | 103 | fuse-overlayfs will automatically load the plugins from that location, 104 | without requiring the additional `-oplugins=...` configuration at run 105 | time. 106 | -------------------------------------------------------------------------------- /c/crfs-plugin.c: -------------------------------------------------------------------------------- 1 | #define _GNU_SOURCE 2 | 3 | #include 4 | 5 | #include 6 | #include 7 | #include 8 | #include 9 | #include 10 | #include 11 | #include 12 | 13 | #include 14 | 15 | #include 16 | 17 | #include "fuse-overlayfs.h" 18 | #include "utils.h" 19 | #include 20 | 21 | #include 22 | 23 | #define TYPE_DIR 1 24 | #define TYPE_REG 2 25 | #define TYPE_SYMLINK 3 26 | #define TYPE_HARDLINK 4 27 | #define TYPE_CHAR 5 28 | #define TYPE_BLOCK 6 29 | #define TYPE_FIFO 7 30 | 31 | static int 32 | get_handle (struct ovl_layer *l) 33 | { 34 | return (int) (long) (l->data_source_private_data); 35 | } 36 | 37 | static GoString 38 | make_go_string (const char *v) 39 | { 40 | GoString s; 41 | 42 | s.p = v; 43 | s.n = strlen (v); 44 | 45 | return s; 46 | } 47 | 48 | static int 49 | crfs_file_exists (struct ovl_layer *l, const char *pathname) 50 | { 51 | struct Stat_return ret; 52 | int layer_handle; 53 | 54 | layer_handle = get_handle (l); 55 | 56 | ret = Stat (layer_handle, make_go_string (pathname)); 57 | 58 | if (ret.r0 < 0) 59 | errno = -ret.r0; 60 | 61 | return ret.r0; 62 | } 63 | 64 | static int 65 | crfs_listxattr (struct ovl_layer *l, const char *path, char *buf, size_t size) 66 | { 67 | int layer_handle; 68 | struct Listxattr_return r; 69 | 70 | layer_handle = get_handle (l); 71 | 72 | r = Listxattr (layer_handle, make_go_string (path)); 73 | if (r.r0 < 0) 74 | { 75 | errno = -r.r0; 76 | return -1; 77 | } 78 | 79 | if (size == 0) 80 | { 81 | free (r.r1); 82 | return r.r0; 83 | } 84 | 85 | if (size < r.r0) 86 | { 87 | free (r.r1); 88 | errno = ERANGE; 89 | return -1; 90 | } 91 | 92 | memcpy (buf, r.r1, r.r0); 93 | free (r.r1); 94 | return r.r0; 95 | } 96 | 97 | static int 98 | crfs_getxattr (struct ovl_layer *l, const char *path, const char *name, char *buf, size_t size) 99 | { 100 | int layer_handle; 101 | struct Getxattr_return r; 102 | 103 | layer_handle = get_handle (l); 104 | 105 | r = Getxattr (layer_handle, make_go_string (path), make_go_string (name)); 106 | if (r.r0 < 0) 107 | { 108 | errno = -r.r0; 109 | return -1; 110 | } 111 | 112 | if (size == 0) 113 | { 114 | free (r.r1); 115 | return r.r0; 116 | } 117 | 118 | if (size < r.r0) 119 | { 120 | free (r.r1); 121 | errno = ERANGE; 122 | return -1; 123 | } 124 | 125 | memcpy (buf, r.r1, r.r0); 126 | free (r.r1); 127 | return r.r0; 128 | } 129 | 130 | static int 131 | crfs_statat (struct ovl_layer *l, const char *path, struct stat *st, int flags, unsigned int mask) 132 | { 133 | struct Stat_return ret; 134 | int layer_handle; 135 | mode_t type = 0; 136 | 137 | layer_handle = get_handle (l); 138 | 139 | ret = Stat (layer_handle, make_go_string (path)); 140 | if (ret.r0 < 0) 141 | { 142 | errno = -ret.r0; 143 | return -1; 144 | } 145 | 146 | switch (ret.r1) 147 | { 148 | case TYPE_DIR: 149 | type = S_IFDIR; 150 | break; 151 | 152 | case TYPE_REG: 153 | case TYPE_HARDLINK: 154 | type = S_IFREG; 155 | break; 156 | 157 | case TYPE_SYMLINK: 158 | type = S_IFLNK; 159 | break; 160 | 161 | case TYPE_CHAR: 162 | type = S_IFCHR; 163 | break; 164 | 165 | case TYPE_BLOCK: 166 | type = S_IFBLK; 167 | break; 168 | 169 | case TYPE_FIFO: 170 | type = S_IFIFO; 171 | break; 172 | } 173 | 174 | st->st_ino = ret.r2; 175 | st->st_mode = ret.r3 | type; 176 | st->st_nlink = ret.r4; 177 | st->st_uid = ret.r5; 178 | st->st_gid = ret.r6; 179 | st->st_rdev = makedev (ret.r7, ret.r8); 180 | st->st_size = ret.r9; 181 | st->st_mtim.tv_sec = ret.r10 / 1000000000; 182 | st->st_mtim.tv_nsec = ret.r10 % 1000000000; 183 | 184 | st->st_ctim = st->st_atim = st->st_mtim; 185 | 186 | return 0; 187 | } 188 | 189 | static int 190 | crfs_fstat (struct ovl_layer *l, int fd, const char *path, unsigned int mask, struct stat *st) 191 | { 192 | return crfs_statat (l, path, st, 0, mask); 193 | } 194 | 195 | struct dir_data 196 | { 197 | int handle; 198 | struct dirent d; 199 | }; 200 | 201 | static struct dirent * 202 | crfs_readdir (void *dirp) 203 | { 204 | struct dir_data *dd = (struct dir_data *) dirp; 205 | int dir_handle; 206 | struct ReadDir_return r; 207 | struct dirent *de = &dd->d; 208 | 209 | r = ReadDir (dd->handle); 210 | if (r.r0 <= 0) 211 | { 212 | errno = -r.r0; 213 | return NULL; 214 | } 215 | 216 | de->d_ino = r.r1; 217 | 218 | strncpy (de->d_name, r.r2, 255); 219 | de->d_name[255] = '\0'; 220 | free (r.r2); 221 | 222 | de->d_reclen = sizeof (struct dirent); 223 | 224 | de->d_type = r.r3; 225 | 226 | return de; 227 | } 228 | 229 | static void * 230 | crfs_opendir (struct ovl_layer *l, const char *path) 231 | { 232 | int d; 233 | int layer_handle; 234 | struct dir_data *dd; 235 | 236 | layer_handle = get_handle (l); 237 | 238 | if (strcmp (path, ".") == 0) 239 | path = ""; 240 | 241 | d = OpenDir (layer_handle, make_go_string (path)); 242 | if (d < 0) 243 | return NULL; 244 | 245 | dd = malloc (sizeof (struct dir_data)); 246 | if (dd == NULL) 247 | { 248 | CloseDir (d); 249 | return NULL; 250 | } 251 | 252 | dd->handle = d; 253 | 254 | return dd; 255 | } 256 | 257 | static int 258 | crfs_closedir (void *dirp) 259 | { 260 | int dir_handle; 261 | struct dir_data *dd = (struct dir_data *) dirp; 262 | 263 | CloseDir (dd->handle); 264 | free (dd); 265 | 266 | return 0; 267 | } 268 | 269 | static int 270 | crfs_openat (struct ovl_layer *l, const char *path, int flags, mode_t mode) 271 | { 272 | int layer_handle; 273 | int ret; 274 | 275 | layer_handle = get_handle (l); 276 | 277 | ret = WaitForFile (layer_handle, make_go_string (path)); 278 | if (ret < 0) 279 | return ret; 280 | return TEMP_FAILURE_RETRY (openat (l->fd, path, flags, mode)); 281 | } 282 | 283 | static ssize_t 284 | crfs_readlinkat (struct ovl_layer *l, const char *path, char *buf, size_t bufsiz) 285 | { 286 | return TEMP_FAILURE_RETRY (readlinkat (l->fd, path, buf, bufsiz)); 287 | } 288 | 289 | static int 290 | crfs_load_data_source (struct ovl_layer *l, const char *opaque, const char *path, int layer) 291 | { 292 | int layer_handle; 293 | 294 | l->path = realpath (path, NULL); 295 | if (l->path == NULL) 296 | return -1; 297 | 298 | l->fd = open (l->path, O_DIRECTORY); 299 | if (l->fd < 0) 300 | { 301 | free (l->path); 302 | l->path = NULL; 303 | return l->fd; 304 | } 305 | 306 | layer_handle = OpenLayer (make_go_string (opaque), 307 | make_go_string (l->path), 308 | make_go_string (l->ovl_data->workdir), 309 | layer); 310 | if (layer_handle < 0) 311 | { 312 | errno = -layer_handle; 313 | return -1; 314 | } 315 | 316 | l->data_source_private_data = (void *) (long) layer_handle; 317 | 318 | return 0; 319 | } 320 | 321 | static int 322 | crfs_num_of_layers (const char *opaque, const char *path) 323 | { 324 | return NumOfLayers (make_go_string (opaque), make_go_string (path)); 325 | } 326 | 327 | static int 328 | crfs_cleanup (struct ovl_layer *l) 329 | { 330 | return 0; 331 | } 332 | 333 | struct data_source crfs_ds = 334 | { 335 | .num_of_layers = crfs_num_of_layers, 336 | .load_data_source = crfs_load_data_source, 337 | .cleanup = crfs_cleanup, 338 | .file_exists = crfs_file_exists, 339 | .statat = crfs_statat, 340 | .fstat = crfs_fstat, 341 | .opendir = crfs_opendir, 342 | .readdir = crfs_readdir, 343 | .closedir = crfs_closedir, 344 | .openat = crfs_openat, 345 | .getxattr = crfs_getxattr, 346 | .listxattr = crfs_listxattr, 347 | .readlinkat = crfs_readlinkat, 348 | }; 349 | 350 | int 351 | plugin_version () 352 | { 353 | return 1; 354 | } 355 | 356 | const char * 357 | plugin_name () 358 | { 359 | return "crfs"; 360 | } 361 | 362 | struct data_source *plugin_load (struct ovl_layer *layer, const char *opaque, const char *path) 363 | { 364 | Load (); 365 | return &crfs_ds; 366 | } 367 | 368 | int 369 | plugin_release () 370 | { 371 | Release (); 372 | return 0; 373 | } 374 | -------------------------------------------------------------------------------- /go/crfs-plugin.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "C" 5 | "context" 6 | "encoding/base64" 7 | "fmt" 8 | "io" 9 | "net/http" 10 | "os" 11 | "path/filepath" 12 | "strings" 13 | "syscall" 14 | "time" 15 | "unsafe" 16 | 17 | "github.com/containers/image/v4/docker" 18 | "github.com/containers/image/v4/image" 19 | imageTypes "github.com/containers/image/v4/types" 20 | "github.com/google/crfs/stargz" 21 | "github.com/pkg/errors" 22 | ) 23 | 24 | const chunkSize = int64(1048576 / 2) 25 | 26 | const downloadAllFile = false 27 | 28 | type layer struct { 29 | reader *stargz.Reader 30 | target string 31 | workdir string 32 | ino map[string]uint64 33 | layerNumber int 34 | remote *remoteData 35 | } 36 | 37 | type urlReaderAt struct { 38 | contentLength int64 39 | url string 40 | cache []byte 41 | cacheRange string 42 | client *http.Client 43 | destFile string 44 | done bool 45 | destFileFD *os.File 46 | fetched map[int64]int64 47 | } 48 | 49 | type dent struct { 50 | ino uint64 51 | name string 52 | typ int 53 | } 54 | 55 | type dir struct { 56 | childs []dent 57 | pos int 58 | } 59 | 60 | type remoteData struct { 61 | layers []imageTypes.BlobInfo 62 | source imageTypes.ImageSource 63 | } 64 | 65 | var registries map[string]*remoteData = map[string]*remoteData{} 66 | 67 | var dirs = map[int]*dir{} 68 | var dirHandle int 69 | var layers []layer 70 | 71 | const TYPE_DIR = 1 72 | const TYPE_REG = 2 73 | const TYPE_SYMLINK = 3 74 | const TYPE_HARDLINK = 4 75 | const TYPE_CHAR = 5 76 | const TYPE_BLOCK = 6 77 | const TYPE_FIFO = 7 78 | 79 | var types = map[string]int{ 80 | "dir": TYPE_DIR, 81 | "reg": TYPE_REG, 82 | "symlink": TYPE_SYMLINK, 83 | "hardlink": TYPE_HARDLINK, 84 | "char": TYPE_CHAR, 85 | "block": TYPE_BLOCK, 86 | "fifo": TYPE_FIFO, 87 | } 88 | 89 | func errorValue(err error) int { 90 | cause := errors.Cause(err) 91 | 92 | if e, ok := cause.(syscall.Errno); ok { 93 | return -int(e) 94 | } 95 | 96 | return -int(syscall.EINVAL) 97 | } 98 | 99 | func (r *urlReaderAt) fetchChunk(off, size int64) error { 100 | if off+size > r.contentLength { 101 | size = r.contentLength - off 102 | } 103 | 104 | if retrievedSize, found := r.fetched[off]; found && retrievedSize >= size { 105 | return nil 106 | } 107 | 108 | rangeVal := fmt.Sprintf("bytes=%d-%d", off, off+size-1) 109 | 110 | ctx, cancel := context.WithTimeout(context.Background(), 300*time.Second) 111 | defer cancel() 112 | req, err := http.NewRequest("GET", r.url, nil) 113 | if err != nil { 114 | return err 115 | } 116 | req = req.WithContext(ctx) 117 | req.Header.Set("Range", rangeVal) 118 | 119 | if r.client == nil { 120 | r.client = &http.Client{ 121 | Timeout: 300 * time.Second, 122 | } 123 | } 124 | 125 | res, err := r.client.Do(req) 126 | if err != nil { 127 | return err 128 | } 129 | defer res.Body.Close() 130 | 131 | if location := res.Header.Get("Location"); location != "" { 132 | r.url = location 133 | return r.fetchChunk(off, size) 134 | } 135 | 136 | buf := make([]byte, size) 137 | 138 | n, err := io.ReadFull(res.Body, buf) 139 | if err != nil { 140 | return err 141 | } 142 | 143 | _, err = r.destFileFD.WriteAt(buf[:n], off) 144 | if err != nil { 145 | return err 146 | } 147 | 148 | r.fetched[off] = size 149 | 150 | return nil 151 | } 152 | 153 | func (r *urlReaderAt) ReadAt(p []byte, off int64) (int, error) { 154 | if err := r.fetchChunk(off, int64(len(p))); err != nil { 155 | return -1, err 156 | } 157 | return r.destFileFD.ReadAt(p, off) 158 | } 159 | 160 | func doLookup(l *layer, path string) (*stargz.TOCEntry, bool) { 161 | if path == "." { 162 | path = "" 163 | } 164 | ent, ok := l.reader.Lookup(path) 165 | if !ok { 166 | return l.reader.Lookup(path + "/") 167 | } 168 | return ent, ok 169 | 170 | } 171 | 172 | type blobSeeker struct { 173 | remote *remoteData 174 | layerN int 175 | fetched map[int64]int64 176 | destFileFD *os.File 177 | } 178 | 179 | func (b *blobSeeker) ReadAt(p []byte, off int64) (int, error) { 180 | if retrievedSize, found := b.fetched[off]; found && retrievedSize >= int64(len(p)) { 181 | return b.destFileFD.ReadAt(p, off) 182 | } 183 | 184 | rc, err := b.remote.source.GetBlobAt(context.Background(), b.remote.layers[b.layerN], off, int64(len(p))) 185 | if err != nil { 186 | return -1, err 187 | } 188 | defer rc.Close() 189 | 190 | n, err := io.ReadFull(rc, p) 191 | if err != nil { 192 | return -1, err 193 | } 194 | b.fetched[off] = int64(n) 195 | 196 | _, err = b.destFileFD.WriteAt(p, off) 197 | if err != nil { 198 | return -1, err 199 | } 200 | 201 | return n, err 202 | } 203 | 204 | func openLayer(data, workdir string, remote *remoteData, number int) (*io.SectionReader, error) { 205 | if strings.HasPrefix(data, "docker://") { 206 | destFile := filepath.Join(workdir, fmt.Sprintf("%s-%d", filepath.Base(data), number)) 207 | destFileFD, err := os.OpenFile(destFile, os.O_RDWR|os.O_CREATE, 0700) 208 | if err != nil { 209 | return nil, err 210 | } 211 | 212 | b := blobSeeker{ 213 | remote: remote, 214 | layerN: number, 215 | fetched: make(map[int64]int64), 216 | destFileFD: destFileFD, 217 | } 218 | 219 | return io.NewSectionReader(&b, 0, remote.layers[number].Size), nil 220 | } 221 | if strings.HasPrefix(data, "file://") { 222 | path := data[len("file://"):] 223 | f, err := os.Open(path) 224 | if err != nil { 225 | return nil, err 226 | } 227 | 228 | fi, err := f.Stat() 229 | if err != nil { 230 | return nil, err 231 | } 232 | return io.NewSectionReader(f, 0, fi.Size()), nil 233 | } 234 | if strings.HasPrefix(data, "https://") || strings.HasPrefix(data, "http://") { 235 | res, err := http.Head(data) 236 | if err != nil { 237 | return nil, err 238 | } 239 | if res.ContentLength == 0 { 240 | return nil, fmt.Errorf("invalid Content-Length for %s", data) 241 | } 242 | 243 | destFile := filepath.Join(workdir, fmt.Sprintf("%s-%d", filepath.Base(data), number)) 244 | destFileFD, err := os.OpenFile(destFile, os.O_RDWR|os.O_CREATE, 0700) 245 | r := &urlReaderAt{ 246 | url: data, 247 | contentLength: res.ContentLength, 248 | destFile: destFile, 249 | destFileFD: destFileFD, 250 | fetched: make(map[int64]int64), 251 | } 252 | 253 | return io.NewSectionReader(r, 0, res.ContentLength), nil 254 | } 255 | return nil, fmt.Errorf("source %s is not supported", data) 256 | } 257 | 258 | func getParentDir(s string) string { 259 | p := filepath.Dir(strings.TrimSuffix(s, "/")) 260 | if p == "." { 261 | return "" 262 | } 263 | return p 264 | } 265 | 266 | func getInoFor(l *layer, ent *stargz.TOCEntry) (uint64, error) { 267 | ino, ok := l.ino[ent.Name] 268 | if ok { 269 | return ino, nil 270 | } 271 | if ent.Name != "" { 272 | p := getParentDir(ent.Name) 273 | pnode, ok := doLookup(l, p) 274 | if !ok { 275 | return 0, syscall.ENOENT 276 | } 277 | 278 | _, err := getInoFor(l, pnode) 279 | if err != nil { 280 | return 0, err 281 | } 282 | } 283 | 284 | destpath := filepath.Join(l.target, ent.Name) 285 | switch ent.Type { 286 | case "dir": 287 | if err := os.Mkdir(destpath, os.FileMode(ent.Mode)); err != nil && !os.IsExist(err) { 288 | return 0, err 289 | } 290 | case "char", "block", "fifo", "reg": 291 | f, err := os.OpenFile(destpath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, os.FileMode(ent.Mode)) 292 | if err != nil && !os.IsExist(err) { 293 | return 0, err 294 | } 295 | f.Close() 296 | case "symlink": 297 | if err := os.Symlink(ent.LinkName, destpath); err != nil && !os.IsExist(err) { 298 | return 0, err 299 | } 300 | case "link": 301 | target, ok := l.reader.Lookup(ent.LinkName) 302 | if !ok { 303 | return 0, syscall.ENOENT 304 | } 305 | 306 | ino, err := getInoFor(l, target) 307 | if err != nil { 308 | return 0, err 309 | } 310 | 311 | if err := os.Link(ent.LinkName, destpath); err != nil && !os.IsExist(err) { 312 | return 0, err 313 | } 314 | l.ino[ent.Name] = ino 315 | return ino, nil 316 | } 317 | 318 | st, err := os.Lstat(destpath) 319 | if err != nil { 320 | return 0, err 321 | } 322 | 323 | ino = st.Sys().(*syscall.Stat_t).Ino 324 | l.ino[ent.Name] = ino 325 | return ino, nil 326 | } 327 | 328 | //export OpenLayer 329 | func OpenLayer(dataB64, target, workdir string, number int) int { 330 | data, err := base64.StdEncoding.DecodeString(dataB64) 331 | if err != nil { 332 | fmt.Fprintf(os.Stderr, "cannot decode %s\n", dataB64) 333 | os.Exit(1) 334 | } 335 | 336 | remote := registries[target] 337 | 338 | sr, err := openLayer(string(data), workdir, remote, number) 339 | if err != nil { 340 | fmt.Fprintf(os.Stderr, "cannot open source %s: %v\n", data, err) 341 | os.Exit(1) 342 | } 343 | 344 | r, err := stargz.Open(sr) 345 | if err != nil { 346 | fmt.Fprintf(os.Stderr, "cannot open stargz file %v: %v\n", data, err) 347 | os.Exit(1) 348 | } 349 | newLayer := layer{ 350 | reader: r, 351 | target: target, 352 | workdir: workdir, 353 | ino: make(map[string]uint64), 354 | layerNumber: number, 355 | remote: remote, 356 | } 357 | layers = append(layers, newLayer) 358 | return len(layers) - 1 359 | } 360 | 361 | //export NumOfLayers 362 | func NumOfLayers(dataB64, target string) int { 363 | data, err := base64.StdEncoding.DecodeString(dataB64) 364 | if err != nil { 365 | fmt.Fprintf(os.Stderr, "cannot decode %s\n", dataB64) 366 | os.Exit(1) 367 | } 368 | 369 | if strings.HasPrefix(string(data), "docker://") { 370 | ctx := context.Background() 371 | url := strings.TrimPrefix(string(data), "docker:") 372 | ref, err := docker.ParseReference(url) 373 | if err != nil { 374 | fmt.Fprintf(os.Stderr, "cannot parse %s: %v\n", url, err) 375 | os.Exit(1) 376 | } 377 | 378 | source, err := ref.NewImageSource(ctx, nil) 379 | if err != nil { 380 | fmt.Fprintf(os.Stderr, "cannot get image source %s: %v\n", url, err) 381 | os.Exit(1) 382 | } 383 | 384 | img, err := image.FromSource(ctx, nil, source) 385 | if err != nil { 386 | fmt.Fprintf(os.Stderr, "cannot get image %s: %v\n", url, err) 387 | os.Exit(1) 388 | } 389 | defer img.Close() 390 | 391 | layers := img.LayerInfos() 392 | 393 | registries[target] = &remoteData{ 394 | layers: layers, 395 | source: source, 396 | } 397 | 398 | return len(layers) 399 | } 400 | return 1 401 | } 402 | 403 | //export Stat 404 | func Stat(layerHandle int, path string) (ret int, st_type, st_ino, st_mode, st_nlink, st_uid, st_gid, st_rdev_major, st_rdev_minor, st_size uint64, st_time int64) { 405 | layer := &layers[layerHandle] 406 | 407 | ent, ok := doLookup(layer, path) 408 | if !ok { 409 | ret = -int(syscall.ENOENT) 410 | return 411 | } 412 | 413 | st_type = uint64(types[ent.Type]) 414 | 415 | var err error 416 | st_ino, err = getInoFor(layer, ent) 417 | if err != nil { 418 | ret = errorValue(err) 419 | return 420 | } 421 | st_mode = uint64(ent.Mode) 422 | st_nlink = uint64(ent.NumLink) 423 | st_uid = uint64(ent.Uid) 424 | st_gid = uint64(ent.Gid) 425 | st_rdev_major = uint64(ent.DevMajor) 426 | st_rdev_minor = uint64(ent.DevMinor) 427 | st_size = uint64(ent.Size) 428 | st_time = ent.ModTime().UnixNano() 429 | ret = 0 430 | return 431 | } 432 | 433 | func getDentType(t string) int { 434 | switch t { 435 | case "dir": 436 | return syscall.DT_DIR 437 | case "reg": 438 | return syscall.DT_REG 439 | case "symlink": 440 | return syscall.DT_LNK 441 | case "link": 442 | return syscall.DT_REG 443 | case "char": 444 | return syscall.DT_CHR 445 | case "block": 446 | return syscall.DT_BLK 447 | case "fifo": 448 | return syscall.DT_FIFO 449 | } 450 | return syscall.DT_UNKNOWN 451 | } 452 | 453 | func fillDir(l *layer, d *dir, e *stargz.TOCEntry) error { 454 | var outerError error 455 | e.ForeachChild(func(baseName string, ent *stargz.TOCEntry) bool { 456 | ino, err := getInoFor(l, ent) 457 | if err != nil { 458 | outerError = err 459 | return false 460 | } 461 | de := dent{ 462 | ino: ino, 463 | name: baseName, 464 | typ: getDentType(ent.Type), 465 | } 466 | d.childs = append(d.childs, de) 467 | return true 468 | }) 469 | return outerError 470 | } 471 | 472 | //export OpenDir 473 | func OpenDir(layerHandle int, path string) int { 474 | layer := &layers[layerHandle] 475 | 476 | ent, ok := doLookup(layer, path) 477 | if !ok { 478 | return -int(syscall.ENOENT) 479 | } 480 | 481 | for { 482 | dirHandle = dirHandle + 1 483 | if dirHandle < 0 { 484 | dirHandle = 0 485 | } 486 | if _, ok := dirs[dirHandle]; !ok { 487 | break 488 | } 489 | } 490 | 491 | d := dir{} 492 | err := fillDir(layer, &d, ent) 493 | if err != nil { 494 | return errorValue(err) 495 | } 496 | dirs[dirHandle] = &d 497 | return dirHandle 498 | } 499 | 500 | //export CloseDir 501 | func CloseDir(handle int) int { 502 | delete(dirs, handle) 503 | return 0 504 | } 505 | 506 | //export ReadDir 507 | func ReadDir(handle int) (ret int, ino uint64, name *C.char, typ int) { 508 | d, ok := dirs[handle] 509 | if !ok { 510 | ret = -int(syscall.EINVAL) 511 | return 512 | } 513 | 514 | if d.pos == len(d.childs) { 515 | ret = 0 516 | return 517 | } 518 | 519 | c := d.childs[d.pos] 520 | 521 | ino = c.ino 522 | name = C.CString(strings.TrimSuffix(c.name, "/")) 523 | typ = c.typ 524 | ret = 1 525 | 526 | d.pos = d.pos + 1 527 | return 528 | } 529 | 530 | //export WaitForFile 531 | func WaitForFile(layerHandle int, path string) (ret int) { 532 | if path == "." { 533 | path = "" 534 | } 535 | l := &layers[layerHandle] 536 | 537 | ent, ok := doLookup(l, path) 538 | if !ok { 539 | return -int(syscall.ENOENT) 540 | } 541 | 542 | if ent.Type != "reg" && ent.Type != "link" { 543 | return 0 544 | } 545 | 546 | // Make sure parent directories exist 547 | _, err := getInoFor(l, ent) 548 | if err != nil { 549 | return errorValue(err) 550 | } 551 | 552 | origpath := filepath.Join(l.target, path) 553 | destpath := filepath.Join(l.target, ent.Name) 554 | st, err := os.Lstat(destpath) 555 | if err != nil { 556 | return -int(syscall.ENOENT) 557 | } 558 | 559 | if origpath != destpath { 560 | if err := os.Link(destpath, origpath); err != nil && !os.IsExist(err) { 561 | return errorValue(err) 562 | } 563 | } 564 | 565 | size := st.Sys().(*syscall.Stat_t).Size 566 | if ent.Size != size { 567 | reader, err := l.reader.OpenFile(path) 568 | if err != nil { 569 | return errorValue(syscall.ENOENT) 570 | } 571 | dest, err := os.OpenFile(destpath, os.O_RDWR|os.O_TRUNC, 0700) 572 | if err != nil { 573 | return errorValue(syscall.ENOENT) 574 | } 575 | buf := make([]byte, ent.Size) 576 | if _, err := io.CopyBuffer(dest, reader, buf); err != nil { 577 | return -int(syscall.ENOENT) 578 | } 579 | } 580 | 581 | return 0 582 | } 583 | 584 | //export Getxattr 585 | func Getxattr(layerHandle int, path, name string) (ret int, value *C.char) { 586 | if path == "." { 587 | path = "" 588 | } 589 | l := &layers[layerHandle] 590 | ent, ok := doLookup(l, path) 591 | if !ok { 592 | return -int(syscall.ENOENT), nil 593 | } 594 | v, ok := ent.Xattrs[name] 595 | if !ok { 596 | return -int(syscall.ENODATA), nil 597 | } 598 | return len(v), C.CString(string(v)) 599 | } 600 | 601 | //export Listxattr 602 | func Listxattr(layerHandle int, path string) (ret int, value unsafe.Pointer) { 603 | if path == "." { 604 | path = "" 605 | } 606 | l := &layers[layerHandle] 607 | ent, ok := doLookup(l, path) 608 | if !ok { 609 | return -int(syscall.ENOENT), nil 610 | } 611 | 612 | var data []byte 613 | for k, _ := range ent.Xattrs { 614 | data = append(data, k...) 615 | data = append(data, 0) 616 | } 617 | data = append(data, 0) 618 | 619 | return len(data), C.CBytes(data) 620 | } 621 | 622 | //export Load 623 | func Load() { 624 | } 625 | 626 | //export Release 627 | func Release() { 628 | } 629 | 630 | func main() { 631 | } 632 | -------------------------------------------------------------------------------- /go/go.mod: -------------------------------------------------------------------------------- 1 | module github.com/giuseppe/crfs-plugin/go 2 | 3 | go 1.13 4 | 5 | require ( 6 | github.com/containers/image v3.0.2+incompatible 7 | github.com/containers/image/v4 v4.0.1 8 | github.com/docker/go-metrics v0.0.1 // indirect 9 | github.com/google/crfs v0.0.0-20191023181012-53a7ed851890 10 | github.com/modern-go/reflect2 v1.0.1 // indirect 11 | github.com/pkg/errors v0.8.2-0.20190227000051-27936f6d90f9 12 | ) 13 | 14 | replace github.com/containers/image/v4 => github.com/giuseppe/image/v4 v4.0.0-20191024080111-a8771ca8ef72 15 | -------------------------------------------------------------------------------- /go/go.sum: -------------------------------------------------------------------------------- 1 | bazil.org/fuse v0.0.0-20180421153158-65cc252bf669/go.mod h1:Xbm+BRKSBEpa4q4hTSxohYNQpsxXPbPry4JJWOB3LB8= 2 | cloud.google.com/go v0.25.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 3 | cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 4 | cloud.google.com/go v0.31.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 5 | cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 6 | cloud.google.com/go v0.37.2/go.mod h1:H8IAquKe2L30IxoupDgqTaQvKSwF/c8prYHynGIWQbA= 7 | git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg= 8 | git.apache.org/thrift.git v0.12.0/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg= 9 | github.com/14rcole/gopopulate v0.0.0-20180821133914-b175b219e774/go.mod h1:6/0dYRLLXyJjbkIPeeGyoJ/eKOSI0eU6eTlCBYibgd0= 10 | github.com/Azure/azure-sdk-for-go v19.1.1+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc= 11 | github.com/Azure/go-autorest v10.15.5+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24= 12 | github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ= 13 | github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= 14 | github.com/DataDog/zstd v1.4.0/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo= 15 | github.com/Microsoft/go-winio v0.4.12/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA= 16 | github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA= 17 | github.com/Microsoft/hcsshim v0.8.6/go.mod h1:Op3hHsoHPAvb6lceZHDtd9OkTew38wNoXnJs8iY7rUg= 18 | github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo= 19 | github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI= 20 | github.com/VividCortex/ewma v1.1.1/go.mod h1:2Tkkvm3sRDVXaiyucHiACn4cqf7DpdyLvmxzcbUokwA= 21 | github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= 22 | github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0= 23 | github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c= 24 | github.com/apache/thrift v0.12.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ= 25 | github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8= 26 | github.com/aws/aws-sdk-go v1.15.90/go.mod h1:es1KtYUFs7le0xQ3rOihkuoVD90z7D0fR2Qm4S00/gU= 27 | github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q= 28 | github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8= 29 | github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM= 30 | github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw= 31 | github.com/bradfitz/go-smtpd v0.0.0-20170404230938-deb6d6237625/go.mod h1:HYsPBTaaSFSlLx/70C2HPIMNZpVV8+vt/A+FMnYP11g= 32 | github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw= 33 | github.com/containerd/continuity v0.0.0-20180216233310-d8fb8589b0e8 h1:ZZOFPzvZO3N0f4LIQvZi68F2XDAMl/gqBfFMVjY6B3Y= 34 | github.com/containerd/continuity v0.0.0-20180216233310-d8fb8589b0e8/go.mod h1:GL3xCUCBDV3CZiTSEKksMWbLE66hEyuu9qyDOOqM47Y= 35 | github.com/containers/image v3.0.2+incompatible h1:B1lqAE8MUPCrsBLE86J0gnXleeRq8zJnQryhiiGQNyE= 36 | github.com/containers/image v3.0.2+incompatible/go.mod h1:8Vtij257IWSanUQKe1tAeNOm2sRVkSqQTVQ1IlwI3+M= 37 | github.com/containers/image/v4 v4.0.1 h1:idNGHChj0Pyv3vLrxul2oSVMZLeFqpoq3CjLeVgapSQ= 38 | github.com/containers/image/v4 v4.0.1/go.mod h1:0ASJH1YgJiX/eqFZObqepgsvIA4XjCgpyfwn9pDGafA= 39 | github.com/containers/libtrust v0.0.0-20190913040956-14b96171aa3b h1:Q8ePgVfHDplZ7U33NwHZkrVELsZP5fYj9pM5WBZB2GE= 40 | github.com/containers/libtrust v0.0.0-20190913040956-14b96171aa3b/go.mod h1:9rfv8iPl1ZP7aqh9YA68wnZv2NUDbXdcdPHVz0pFbPY= 41 | github.com/containers/storage v1.13.4/go.mod h1:6D8nK2sU9V7nEmAraINRs88ZEscM5C5DK+8Npp27GeA= 42 | github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE= 43 | github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk= 44 | github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk= 45 | github.com/coreos/go-systemd v0.0.0-20181012123002-c6f51f82210d/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4= 46 | github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE= 47 | github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= 48 | github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= 49 | github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ= 50 | github.com/docker/cli v0.0.0-20190925022749-754388324470/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8= 51 | github.com/docker/distribution v0.0.0-20170817175659-5f6282db7d65/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w= 52 | github.com/docker/distribution v2.6.0-rc.1.0.20180327202408-83389a148052+incompatible h1:W1rhCpxfWMU0CaZSFWpmWfmB68zYZVksig+VC1ZbgI4= 53 | github.com/docker/distribution v2.6.0-rc.1.0.20180327202408-83389a148052+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w= 54 | github.com/docker/docker v0.0.0-20171019062838-86f080cff091/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk= 55 | github.com/docker/docker v0.0.0-20180522102801-da99009bbb11/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk= 56 | github.com/docker/docker v1.4.2-0.20180531152204-71cd53e4a197 h1:7X3lPJrEEhoUt1UnISqyUB4phKf9aAKVMdFXD63DJO8= 57 | github.com/docker/docker v1.4.2-0.20180531152204-71cd53e4a197/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk= 58 | github.com/docker/docker-credential-helpers v0.6.0/go.mod h1:WRaJzqw3CTB9bk10avuGsjVBZsD05qeibJ1/TYlvc0Y= 59 | github.com/docker/docker-credential-helpers v0.6.3 h1:zI2p9+1NQYdnG6sMU26EX4aVGlqbInSQxQXLvzJ4RPQ= 60 | github.com/docker/docker-credential-helpers v0.6.3/go.mod h1:WRaJzqw3CTB9bk10avuGsjVBZsD05qeibJ1/TYlvc0Y= 61 | github.com/docker/go-connections v0.0.0-20180212134524-7beb39f0b969/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5XhDvyHbTtUxmeec= 62 | github.com/docker/go-connections v0.4.0 h1:El9xVISelRB7BuFusrZozjnkIM5YnzCViNKohAFqRJQ= 63 | github.com/docker/go-connections v0.4.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5XhDvyHbTtUxmeec= 64 | github.com/docker/go-metrics v0.0.1 h1:AgB/0SvBxihN0X8OR4SjsblXkbMvalQ8cjmtKQ2rQV8= 65 | github.com/docker/go-metrics v0.0.1/go.mod h1:cG1hvH2utMXtqgqqYE9plW6lDxS3/5ayHzueweSI3Vw= 66 | github.com/docker/go-units v0.3.3/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk= 67 | github.com/docker/go-units v0.4.0 h1:3uh0PgVws3nIA0Q+MwDC8yjEPf9zjRfZZWXZYDct3Tw= 68 | github.com/docker/go-units v0.4.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk= 69 | github.com/docker/libtrust v0.0.0-20160708172513-aabc10ec26b7 h1:UhxFibDNY/bfvqU5CAUmr9zpesgbU6SWc8/B4mflAE4= 70 | github.com/docker/libtrust v0.0.0-20160708172513-aabc10ec26b7/go.mod h1:cyGadeNEkKy96OOhEzfZl+yxihPEzKnqJwvfuSUqbZE= 71 | github.com/eapache/go-resiliency v1.1.0/go.mod h1:kFI+JgMyC7bLPUVY133qvEBtVayf5mFgVsvEsIPBvNs= 72 | 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