| 1 | Depends-On-Patch: acls.diff |
| 2 | |
| 3 | After applying this patch, run these commands for a successful build: |
| 4 | |
| 5 | ./prepare-source |
| 6 | ./configure --enable-acl-support --enable-xattr-support |
| 7 | make |
| 8 | |
| 9 | --- old/Makefile.in |
| 10 | +++ new/Makefile.in |
| 11 | @@ -27,13 +27,13 @@ VERSION=@VERSION@ |
| 12 | |
| 13 | HEADERS=byteorder.h config.h errcode.h proto.h rsync.h smb_acls.h lib/pool_alloc.h |
| 14 | LIBOBJ=lib/wildmatch.o lib/compat.o lib/snprintf.o lib/mdfour.o \ |
| 15 | - lib/permstring.o lib/pool_alloc.o lib/sysacls.o @LIBOBJS@ |
| 16 | + lib/permstring.o lib/pool_alloc.o lib/sysacls.o lib/sysxattr.o @LIBOBJS@ |
| 17 | ZLIBOBJ=zlib/deflate.o zlib/inffast.o zlib/inflate.o zlib/inftrees.o \ |
| 18 | zlib/trees.o zlib/zutil.o zlib/adler32.o zlib/compress.o zlib/crc32.o |
| 19 | OBJS1=rsync.o generator.o receiver.o cleanup.o sender.o exclude.o util.o \ |
| 20 | main.o checksum.o match.o syscall.o log.o backup.o |
| 21 | OBJS2=options.o flist.o io.o compat.o hlink.o token.o uidlist.o socket.o \ |
| 22 | - fileio.o batch.o clientname.o chmod.o acls.o |
| 23 | + fileio.o batch.o clientname.o chmod.o acls.o xattr.o |
| 24 | OBJS3=progress.o pipe.o |
| 25 | DAEMON_OBJ = params.o loadparm.o clientserver.o access.o connection.o authenticate.o |
| 26 | popt_OBJS=popt/findme.o popt/popt.o popt/poptconfig.o \ |
| 27 | --- old/backup.c |
| 28 | +++ new/backup.c |
| 29 | @@ -136,6 +136,7 @@ static int make_bak_dir(char *fullpath) |
| 30 | do_lchown(fullpath, st.st_uid, st.st_gid); |
| 31 | do_chmod(fullpath, st.st_mode); |
| 32 | (void)DUP_ACL(end, fullpath, st.st_mode); |
| 33 | + (void)DUP_XATTR(end, fullpath ); |
| 34 | } |
| 35 | } |
| 36 | *p = '/'; |
| 37 | @@ -190,6 +191,7 @@ static int keep_backup(char *fname) |
| 38 | return 0; |
| 39 | |
| 40 | PUSH_KEEP_BACKUP_ACL(file, fname, buf); |
| 41 | + PUSH_KEEP_BACKUP_XATTR(file, fname, buf); |
| 42 | |
| 43 | /* Check to see if this is a device file, or link */ |
| 44 | if ((am_root && preserve_devices && IS_DEVICE(file->mode)) |
| 45 | @@ -267,6 +269,7 @@ static int keep_backup(char *fname) |
| 46 | } |
| 47 | set_file_attrs(buf, file, NULL, 0); |
| 48 | CLEANUP_KEEP_BACKUP_ACL(); |
| 49 | + CLEANUP_KEEP_BACKUP_XATTR(); |
| 50 | free(file); |
| 51 | |
| 52 | if (verbose > 1) { |
| 53 | --- old/configure.in |
| 54 | +++ new/configure.in |
| 55 | @@ -810,6 +810,30 @@ samba_cv_HAVE_ACL_GET_PERM_NP=yes,samba_ |
| 56 | AC_MSG_RESULT(no) |
| 57 | ) |
| 58 | |
| 59 | +AC_CHECK_HEADERS(attr/xattr.h) |
| 60 | +AC_MSG_CHECKING(whether to support extended attributes) |
| 61 | +AC_ARG_ENABLE(xattr-support, |
| 62 | +AC_HELP_STRING([--enable-xattr-support], [Include extended attribute support (default=no)]), |
| 63 | +[ case "$enableval" in |
| 64 | + yes) |
| 65 | + case "$host_os" in |
| 66 | + *linux*) |
| 67 | + AC_MSG_RESULT(Using Linux xattrs) |
| 68 | + AC_DEFINE(HAVE_LINUX_XATTRS, 1, [True if you have Linux xattrs]) |
| 69 | + ;; |
| 70 | + *) |
| 71 | + AC_MSG_RESULT(Xattrs requested but not linux. Good luck) |
| 72 | + ;; |
| 73 | + esac |
| 74 | + ;; |
| 75 | + *) |
| 76 | + AC_MSG_RESULT(no) |
| 77 | + AC_DEFINE(HAVE_NA_XATTRS, 1, [True if you don't have extended attributes]) |
| 78 | + esac ], |
| 79 | + AC_MSG_RESULT(no) |
| 80 | + AC_DEFINE(HAVE_NO_XATTRL, 1, [True if you don't have extended attributes]) |
| 81 | +) |
| 82 | + |
| 83 | AC_CONFIG_FILES([Makefile lib/dummy zlib/dummy popt/dummy shconfig]) |
| 84 | AC_OUTPUT |
| 85 | |
| 86 | --- old/flist.c |
| 87 | +++ new/flist.c |
| 88 | @@ -969,6 +969,8 @@ static struct file_struct *send_file_nam |
| 89 | return NULL; |
| 90 | if (MAKE_ACL(file, fname) < 0) |
| 91 | return NULL; |
| 92 | + if (MAKE_XATTR(file, fname) < 0) |
| 93 | + return NULL; |
| 94 | |
| 95 | if (chmod_modes && !S_ISLNK(file->mode)) |
| 96 | file->mode = tweak_mode(file->mode, chmod_modes); |
| 97 | @@ -981,9 +983,11 @@ static struct file_struct *send_file_nam |
| 98 | flist->files[flist->count++] = file; |
| 99 | send_file_entry(file, f); |
| 100 | SEND_ACL(file, f); |
| 101 | + SEND_XATTR(file, f); |
| 102 | } else { |
| 103 | /* Cleanup unsent ACL(s). */ |
| 104 | SEND_ACL(file, -1); |
| 105 | + SEND_XATTR(file, -1); |
| 106 | } |
| 107 | return file; |
| 108 | } |
| 109 | @@ -1373,6 +1377,7 @@ struct file_list *recv_file_list(int f) |
| 110 | file = receive_file_entry(flist, flags, f); |
| 111 | |
| 112 | RECEIVE_ACL(file, f); |
| 113 | + RECEIVE_XATTR(file, f ); |
| 114 | |
| 115 | if (S_ISREG(file->mode)) |
| 116 | stats.total_size += file->length; |
| 117 | @@ -1397,6 +1402,7 @@ struct file_list *recv_file_list(int f) |
| 118 | clean_flist(flist, relative_paths, 1); |
| 119 | |
| 120 | SORT_FILE_ACL_INDEX_LISTS(); |
| 121 | + SORT_FILE_XATTR_INDEX_LISTS(); |
| 122 | |
| 123 | if (f >= 0) { |
| 124 | recv_uid_list(f, flist); |
| 125 | --- old/generator.c |
| 126 | +++ new/generator.c |
| 127 | @@ -908,6 +908,10 @@ static void recv_generator(char *fname, |
| 128 | if (f_out == -1) |
| 129 | SET_ACL(fname, file); |
| 130 | #endif |
| 131 | +#ifdef SUPPORT_XATTRS |
| 132 | + if (f_out == -1) |
| 133 | + SET_XATTR(fname, file); |
| 134 | +#endif |
| 135 | if (delete_during && f_out != -1 && !phase && dry_run < 2 |
| 136 | && (file->flags & FLAG_DEL_HERE)) |
| 137 | delete_in_dir(the_file_list, fname, file, &st); |
| 138 | --- old/lib/sysxattr.c |
| 139 | +++ new/lib/sysxattr.c |
| 140 | @@ -0,0 +1,41 @@ |
| 141 | +/* Extended attribute support for rsync. */ |
| 142 | +/* This file Copyright (C) 2004 Red Hat, Inc. */ |
| 143 | +/* Written by Jay Fenlason */ |
| 144 | + |
| 145 | +/* This program is free software; you can redistribute it and/or modify |
| 146 | + it under the terms of the GNU General Public License as published by |
| 147 | + the Free Software Foundation; either version 2 of the License, or |
| 148 | + (at your option) any later version. |
| 149 | + |
| 150 | + This program is distributed in the hope that it will be useful, |
| 151 | + but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 152 | + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 153 | + GNU General Public License for more details. |
| 154 | + |
| 155 | + You should have received a copy of the GNU General Public License |
| 156 | + along with this program; if not, write to the Free Software |
| 157 | + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 158 | +*/ |
| 159 | + |
| 160 | +#include "rsync.h" |
| 161 | + |
| 162 | +#if defined(HAVE_LINUX_XATTRS) |
| 163 | + |
| 164 | +ssize_t sys_lgetxattr(const char *path, const char *name, void *value, size_t size) |
| 165 | +{ |
| 166 | + return lgetxattr(path, name, value, size); |
| 167 | +} |
| 168 | + |
| 169 | +int sys_lsetxattr(const char *path, const char *name, const void *value, size_t size, int flags) |
| 170 | +{ |
| 171 | + return lsetxattr(path, name, value, size, flags); |
| 172 | +} |
| 173 | + |
| 174 | +ssize_t sys_llistxattr(const char *path, char *list, size_t size) |
| 175 | +{ |
| 176 | + return llistxattr(path, list, size); |
| 177 | +} |
| 178 | + |
| 179 | +#else |
| 180 | + |
| 181 | +#endif /* No xattrs */ |
| 182 | --- old/lib/sysxattr.h |
| 183 | +++ new/lib/sysxattr.h |
| 184 | @@ -0,0 +1,9 @@ |
| 185 | +#if defined(HAVE_LINUX_XATTRS) |
| 186 | + |
| 187 | +ssize_t sys_lgetxattr(const char *path, const char *name, void *value, size_t size); |
| 188 | +int sys_lsetxattr(const char *path, const char *name, const void *value, size_t size, int flags); |
| 189 | +ssize_t sys_llistxattr(const char *path, char *list, size_t size); |
| 190 | + |
| 191 | +#else |
| 192 | + |
| 193 | +#endif /* No xattrs */ |
| 194 | --- old/options.c |
| 195 | +++ new/options.c |
| 196 | @@ -45,6 +45,7 @@ int copy_links = 0; |
| 197 | int preserve_links = 0; |
| 198 | int preserve_hard_links = 0; |
| 199 | int preserve_acls = 0; |
| 200 | +int preserve_xattrs = 0; |
| 201 | int preserve_perms = 0; |
| 202 | int preserve_executability = 0; |
| 203 | int preserve_devices = 0; |
| 204 | @@ -195,6 +196,7 @@ static void print_rsync_version(enum log |
| 205 | char const *have_inplace = "no "; |
| 206 | char const *hardlinks = "no "; |
| 207 | char const *acls = "no "; |
| 208 | + char const *xattrs = "no "; |
| 209 | char const *links = "no "; |
| 210 | char const *ipv6 = "no "; |
| 211 | STRUCT_STAT *dumstat; |
| 212 | @@ -214,7 +216,9 @@ static void print_rsync_version(enum log |
| 213 | #ifdef SUPPORT_ACLS |
| 214 | acls = ""; |
| 215 | #endif |
| 216 | - |
| 217 | +#ifdef SUPPORT_XATTRS |
| 218 | + xattrs = ""; |
| 219 | +#endif |
| 220 | #ifdef SUPPORT_LINKS |
| 221 | links = ""; |
| 222 | #endif |
| 223 | @@ -228,9 +232,9 @@ static void print_rsync_version(enum log |
| 224 | rprintf(f, "Copyright (C) 1996-2006 by Andrew Tridgell, Wayne Davison, and others.\n"); |
| 225 | rprintf(f, "<http://rsync.samba.org/>\n"); |
| 226 | rprintf(f, "Capabilities: %d-bit files, %ssocketpairs, " |
| 227 | - "%shard links, %sACLs, %ssymlinks, batchfiles,\n", |
| 228 | + "%shard links, %sACLs, %sxattrs, %ssymlinks, batchfiles,\n", |
| 229 | (int) (sizeof (OFF_T) * 8), |
| 230 | - got_socketpair, hardlinks, acls, links); |
| 231 | + got_socketpair, hardlinks, acls, xattrs, links); |
| 232 | |
| 233 | /* Note that this field may not have type ino_t. It depends |
| 234 | * on the complicated interaction between largefile feature |
| 235 | @@ -302,6 +306,9 @@ void usage(enum logcode F) |
| 236 | #ifdef SUPPORT_ACLS |
| 237 | rprintf(F," -A, --acls preserve ACLs (implies --perms)\n"); |
| 238 | #endif |
| 239 | +#ifdef SUPPORT_XATTRS |
| 240 | + rprintf(F," -X, --xattrs preserve extended attributes (implies --perms)\n"); |
| 241 | +#endif |
| 242 | rprintf(F," --chmod=CHMOD change destination permissions\n"); |
| 243 | rprintf(F," -o, --owner preserve owner (super-user only)\n"); |
| 244 | rprintf(F," -g, --group preserve group\n"); |
| 245 | @@ -421,6 +428,9 @@ static struct poptOption long_options[] |
| 246 | {"acls", 'A', POPT_ARG_NONE, 0, 'A', 0, 0 }, |
| 247 | {"no-acls", 0, POPT_ARG_VAL, &preserve_acls, 0, 0, 0 }, |
| 248 | {"no-A", 0, POPT_ARG_VAL, &preserve_acls, 0, 0, 0 }, |
| 249 | + {"xattrs", 'X', POPT_ARG_NONE, 0, 'X', 0, 0 }, |
| 250 | + {"no-xattrs", 0, POPT_ARG_VAL, &preserve_xattrs, 0, 0, 0 }, |
| 251 | + {"no-X", 0, POPT_ARG_VAL, &preserve_xattrs, 0, 0, 0 }, |
| 252 | {"times", 't', POPT_ARG_VAL, &preserve_times, 1, 0, 0 }, |
| 253 | {"no-times", 0, POPT_ARG_VAL, &preserve_times, 0, 0, 0 }, |
| 254 | {"no-t", 0, POPT_ARG_VAL, &preserve_times, 0, 0, 0 }, |
| 255 | @@ -1085,6 +1095,17 @@ int parse_arguments(int *argc, const cha |
| 256 | return 0; |
| 257 | #endif |
| 258 | |
| 259 | + case 'X': |
| 260 | +#ifdef SUPPORT_XATTRS |
| 261 | + preserve_xattrs = 1; |
| 262 | + preserve_perms = 1; |
| 263 | + break; |
| 264 | +#else |
| 265 | + snprintf(err_buf,sizeof(err_buf), |
| 266 | + "extended attributes are not supported on this %s\n", |
| 267 | + am_server ? "server" : "client"); |
| 268 | + return 0; |
| 269 | +#endif /* SUPPORT_XATTRS */ |
| 270 | |
| 271 | default: |
| 272 | /* A large opt value means that set_refuse_options() |
| 273 | @@ -1530,6 +1551,10 @@ void server_options(char **args,int *arg |
| 274 | if (preserve_acls) |
| 275 | argstr[x++] = 'A'; |
| 276 | #endif |
| 277 | +#ifdef SUPPORT_XATTRS |
| 278 | + if (preserve_xattrs) |
| 279 | + argstr[x++] = 'X'; |
| 280 | +#endif |
| 281 | if (preserve_uid) |
| 282 | argstr[x++] = 'o'; |
| 283 | if (preserve_gid) |
| 284 | --- old/rsync.c |
| 285 | +++ new/rsync.c |
| 286 | @@ -206,12 +206,15 @@ int set_file_attrs(char *fname, struct f |
| 287 | } |
| 288 | #endif |
| 289 | |
| 290 | - /* If this is a directory, SET_ACL() will be called on the cleanup |
| 291 | - * receive_generator() pass (if we called it here, we might clobber |
| 292 | - * writability on the directory). Everything else is OK to do now. */ |
| 293 | + /* If this is a directory, SET_ACL() and/or SET_XATTR() will be called |
| 294 | + * on the cleanup receive_generator() pass -- if we called it here, we |
| 295 | + * might clobber writability on the dir (SELinux security contexts are |
| 296 | + * stored in xattrs). Everything else is OK to do now. */ |
| 297 | if (!S_ISDIR(st->st_mode)) { |
| 298 | if (SET_ACL(fname, file) == 0) |
| 299 | updated = 1; |
| 300 | + if (SET_XATTR(fname, file) == 0) |
| 301 | + updated = 1; |
| 302 | } |
| 303 | |
| 304 | if (verbose > 1 && flags & ATTRS_REPORT) { |
| 305 | --- old/rsync.h |
| 306 | +++ new/rsync.h |
| 307 | @@ -695,6 +695,38 @@ struct chmod_mode_struct; |
| 308 | #endif /* SUPPORT_ACLS */ |
| 309 | #include "smb_acls.h" |
| 310 | |
| 311 | +#ifdef HAVE_LINUX_XATTRS |
| 312 | +#define SUPPORT_XATTRS 1 |
| 313 | +#endif |
| 314 | + |
| 315 | +#ifdef SUPPORT_XATTRS |
| 316 | +#ifdef HAVE_ATTR_XATTR_H |
| 317 | +#include <attr/xattr.h> |
| 318 | +#endif |
| 319 | +#define MAKE_XATTR(file, fname) make_xattr(file, fname) |
| 320 | +#define SEND_XATTR(file, f) send_xattr(file, f) |
| 321 | +#define RECEIVE_XATTR(file, f) receive_xattr(file, f) |
| 322 | +#define SORT_FILE_XATTR_INDEX_LISTS() sort_file_xattr_index_lists() |
| 323 | +#define SET_XATTR(fname, file) set_xattr(fname, file) |
| 324 | +#define NEXT_XATTR_UID() next_xattr_uid() |
| 325 | +#define XATTR_UID_MAP(uid) xattr_uid_map(uid) |
| 326 | +#define PUSH_KEEP_BACKUP_XATTR(file, orig, dest) \ |
| 327 | + push_keep_backup_xattr(file, orig, dest) |
| 328 | +#define CLEANUP_KEEP_BACKUP_XATTR() cleanup_keep_backup_xattr() |
| 329 | +#define DUP_XATTR(orig, dest) dup_xattr(orig, dest) |
| 330 | +#else /* SUPPORT_XATTRS */ |
| 331 | +#define MAKE_XATTR(file, fname) 1 /* checked return value */ |
| 332 | +#define SEND_XATTR(file, f) |
| 333 | +#define RECEIVE_XATTR(file, f) |
| 334 | +#define SORT_FILE_XATTR_INDEX_LISTS() |
| 335 | +#define SET_XATTR(fname, file) 1 /* checked return value */ |
| 336 | +#define NEXT_XATTR_UID() |
| 337 | +#define XATTR_UID_MAP(uid) |
| 338 | +#define PUSH_KEEP_BACKUP_XATTR(file, orig, dest) |
| 339 | +#define CLEANUP_KEEP_BACKUP_XATTR() |
| 340 | +#define DUP_XATTR(src, orig) 1 /* checked return value */ |
| 341 | +#endif /* SUPPORT_XATTRS */ |
| 342 | + |
| 343 | #include "proto.h" |
| 344 | |
| 345 | /* We have replacement versions of these if they're missing. */ |
| 346 | --- old/rsync.yo |
| 347 | +++ new/rsync.yo |
| 348 | @@ -318,6 +318,7 @@ to the detailed description below for a |
| 349 | -p, --perms preserve permissions |
| 350 | -E, --executability preserve executability |
| 351 | -A, --acls preserve ACLs (implies -p) [non-standard] |
| 352 | + -X, --xattrs preserve extended attrs (implies -p) [n.s.] |
| 353 | --chmod=CHMOD change destination permissions |
| 354 | -o, --owner preserve owner (super-user only) |
| 355 | -g, --group preserve group |
| 356 | @@ -751,6 +752,11 @@ dit(bf(-A, --acls)) This option causes r |
| 357 | ACLs to be the same as the source ACLs. This nonstandard option only |
| 358 | works if the remote rsync also supports it. bf(--acls) implies bf(--perms). |
| 359 | |
| 360 | +dit(bf(-X, --xattrs)) This option causes rsync to update the remote |
| 361 | +extended attributes to be the same as the local ones. This will work |
| 362 | +only if the remote machine's rsync supports this option also. This is |
| 363 | +a non-standard option. |
| 364 | + |
| 365 | dit(bf(--chmod)) This option tells rsync to apply one or more |
| 366 | comma-separated "chmod" strings to the permission of the files in the |
| 367 | transfer. The resulting value is treated as though it was the permissions |
| 368 | --- old/xattr.c |
| 369 | +++ new/xattr.c |
| 370 | @@ -0,0 +1,540 @@ |
| 371 | +/* Extended Attribute support for rsync */ |
| 372 | +/* Copyright (C) 2004 Red Hat, Inc */ |
| 373 | +/* Written by Jay Fenlason, vaguely based on the ACLs patch */ |
| 374 | + |
| 375 | +/* This program is free software; you can redistribute it and/or modify |
| 376 | + it under the terms of the GNU General Public License as published by |
| 377 | + the Free Software Foundation; either version 2 of the License, or |
| 378 | + (at your option) any later version. |
| 379 | + |
| 380 | + This program is distributed in the hope that it will be useful, |
| 381 | + but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 382 | + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 383 | + GNU General Public License for more details. |
| 384 | + |
| 385 | + You should have received a copy of the GNU General Public License |
| 386 | + along with this program; if not, write to the Free Software |
| 387 | + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 388 | +*/ |
| 389 | + |
| 390 | +#include "rsync.h" |
| 391 | +#include "lib/sysxattr.h" |
| 392 | + |
| 393 | +#ifdef SUPPORT_XATTRS |
| 394 | + |
| 395 | +extern int preserve_xattrs; |
| 396 | +extern int dry_run; |
| 397 | + |
| 398 | +#define RSYNC_XAL_INITIAL 5 |
| 399 | +#define RSYNC_XAL_LIST_INITIAL 100 |
| 400 | + |
| 401 | +typedef struct { |
| 402 | + size_t name_len; |
| 403 | + char *name; |
| 404 | + size_t datum_len; |
| 405 | + char *datum; |
| 406 | +} rsync_xa; |
| 407 | + |
| 408 | +typedef struct { |
| 409 | + size_t count; |
| 410 | + size_t alloc; |
| 411 | + rsync_xa *rxas; |
| 412 | +} rsync_xal; |
| 413 | + |
| 414 | +typedef struct { |
| 415 | + size_t count; |
| 416 | + size_t alloc; |
| 417 | + rsync_xal *rxals; |
| 418 | +} rsync_xal_list; |
| 419 | + |
| 420 | +static size_t namebuf_len = 0; |
| 421 | +static char *namebuf = NULL; |
| 422 | + |
| 423 | +static size_t datumbuf_len = 0; |
| 424 | +static char *datumbuf = NULL; |
| 425 | + |
| 426 | +static rsync_xal curr_rsync_xal = { 0, 0, NULL }; |
| 427 | +static rsync_xal_list rsync_xal_l = { 0, 0, NULL }; |
| 428 | + |
| 429 | + |
| 430 | +/* ------------------------------------------------------------------------- */ |
| 431 | + |
| 432 | +/* the below stuff is only used by the receiver */ |
| 433 | + |
| 434 | +/* structure to hold index to rsync_xal_l member corresponding to |
| 435 | + * flist->files[i] */ |
| 436 | + |
| 437 | +typedef struct { |
| 438 | + const struct file_struct *file; |
| 439 | + int xalidx; |
| 440 | +} file_xal_index; |
| 441 | + |
| 442 | +typedef struct { |
| 443 | + size_t count; |
| 444 | + size_t alloc; |
| 445 | + file_xal_index *filexalidxs; |
| 446 | +} file_xal_index_list; |
| 447 | + |
| 448 | +static file_xal_index_list fxil = {0, 0, NULL }; |
| 449 | + |
| 450 | +/* stuff for redirecting calls to set_acl() from set_perms() |
| 451 | + * for keep_backup() */ |
| 452 | +static const struct file_struct *backup_orig_file = NULL; |
| 453 | +static const char null_string[] = ""; |
| 454 | +static const char *backup_orig_fname = null_string; |
| 455 | +static const char *backup_dest_fname = null_string; |
| 456 | +static rsync_xal backup_xal; |
| 457 | + |
| 458 | +/* ------------------------------------------------------------------------- */ |
| 459 | + |
| 460 | +static void rsync_xal_free(rsync_xal *x) |
| 461 | +{ |
| 462 | + size_t i; |
| 463 | + |
| 464 | + for (i = 0; i < x->count; i++) { |
| 465 | + free(x->rxas[i].name); |
| 466 | + /* free(x->rxas[i].value); */ |
| 467 | + } |
| 468 | + x->count = 0; |
| 469 | +} |
| 470 | + |
| 471 | +static int rsync_xal_compare_names(const void *x1, const void *x2) |
| 472 | +{ |
| 473 | + const rsync_xa *xa1; |
| 474 | + const rsync_xa *xa2; |
| 475 | + |
| 476 | + xa1 = x1; |
| 477 | + xa2 = x2; |
| 478 | + return strcmp(xa1->name, xa2->name); |
| 479 | +} |
| 480 | + |
| 481 | +static int rsync_xal_get(const char *fname, rsync_xal *x) |
| 482 | +{ |
| 483 | + ssize_t name_size; |
| 484 | + ssize_t datum_size; |
| 485 | + ssize_t left; |
| 486 | + char *name; |
| 487 | + size_t len; |
| 488 | + char *ptr; |
| 489 | + |
| 490 | + if (!namebuf) { |
| 491 | + namebuf_len = 100; |
| 492 | + namebuf = new_array(char, namebuf_len); |
| 493 | + datumbuf_len = 100; |
| 494 | + datumbuf = new_array(char, datumbuf_len); |
| 495 | + if (!namebuf || !datumbuf) |
| 496 | + out_of_memory("rsync_xal_get"); |
| 497 | + } |
| 498 | + |
| 499 | + name_size = sys_llistxattr(fname, namebuf, namebuf_len); |
| 500 | + if (name_size > (ssize_t)namebuf_len) { |
| 501 | + name_size = -1; |
| 502 | + errno = ERANGE; |
| 503 | + } |
| 504 | + if (name_size < 0) { |
| 505 | + if (errno == ENOTSUP) |
| 506 | + return -1; |
| 507 | + if (errno == ERANGE) { |
| 508 | + name_size = sys_llistxattr(fname, NULL, 0); |
| 509 | + if (name_size < 0) { |
| 510 | + rprintf(FERROR, "%s: rsync_xal_get: llistxattr: %s\n", |
| 511 | + fname, strerror(errno)); |
| 512 | + return -1; |
| 513 | + } |
| 514 | + namebuf = realloc_array(namebuf, char, name_size + 1); |
| 515 | + if (!namebuf) |
| 516 | + out_of_memory("rsync_xal_get"); |
| 517 | + namebuf_len = name_size; |
| 518 | + name_size = sys_llistxattr(fname, namebuf, namebuf_len); |
| 519 | + if (name_size < 0) { |
| 520 | + rprintf(FERROR, |
| 521 | + "%s: rsync_xal_get: re-llistxattr failed: %s\n", |
| 522 | + fname, strerror(errno)); |
| 523 | + return -1; |
| 524 | + } |
| 525 | + } else { |
| 526 | + rprintf(FERROR, |
| 527 | + "%s: rsync_xal_get: llistxattr failed: %s\n", |
| 528 | + fname, strerror(errno)); |
| 529 | + return -1; |
| 530 | + } |
| 531 | + } |
| 532 | + rsync_xal_free(x); |
| 533 | + if (name_size == 0) |
| 534 | + return 0; |
| 535 | + for (left = name_size, name = namebuf; left > 0 ; left -= len, name += len) { |
| 536 | + len = strlen(name) + 1; |
| 537 | + |
| 538 | + if (x->count >= x->alloc) { |
| 539 | + size_t new_alloc; |
| 540 | + rsync_xa *new_rxas; |
| 541 | + |
| 542 | + new_alloc = x->alloc < RSYNC_XAL_INITIAL ? RSYNC_XAL_INITIAL : x->alloc * 2; |
| 543 | + new_rxas = realloc_array(x->rxas, rsync_xa, new_alloc); |
| 544 | + if (!new_rxas) |
| 545 | + out_of_memory("rsync_xal_get"); |
| 546 | + x->alloc = new_alloc; |
| 547 | + x->rxas = new_rxas; |
| 548 | + } |
| 549 | + datum_size = sys_lgetxattr(fname, name, datumbuf, datumbuf_len); |
| 550 | + if (datum_size > (ssize_t)datumbuf_len) { |
| 551 | + datum_size = -1; |
| 552 | + errno = ERANGE; |
| 553 | + } |
| 554 | + if (datum_size < 0) { |
| 555 | + if (errno == ENOTSUP) |
| 556 | + return -1; |
| 557 | + if (errno == ERANGE) { |
| 558 | + datum_size = sys_lgetxattr(fname, name, NULL, 0); |
| 559 | + if (datum_size < 0) { |
| 560 | + rprintf(FERROR, |
| 561 | + "%s: rsync_xal_get: lgetxattr %s failed: %s\n", |
| 562 | + fname, name, strerror(errno)); |
| 563 | + return -1; |
| 564 | + } |
| 565 | + datumbuf = realloc_array(datumbuf, char, datum_size + 1); |
| 566 | + if (!datumbuf) |
| 567 | + out_of_memory("rsync_xal_get"); |
| 568 | + datumbuf_len = datum_size; |
| 569 | + datum_size = sys_lgetxattr(fname, name, datumbuf, datumbuf_len); |
| 570 | + if (datum_size < 0) { |
| 571 | + rprintf(FERROR, |
| 572 | + "%s: rsync_xal_get: re-lgetxattr of %s failed: %s\n", |
| 573 | + name, fname, strerror(errno)); |
| 574 | + return -1; |
| 575 | + } |
| 576 | + } else { |
| 577 | + rprintf(FERROR, |
| 578 | + "%s: rsync_xal_get: lgetxattr %s failed: %s\n", |
| 579 | + fname, name, strerror(errno)); |
| 580 | + return -1; |
| 581 | + } |
| 582 | + } |
| 583 | + ptr = new_array(char, len + datum_size); |
| 584 | + if (!ptr) |
| 585 | + out_of_memory("rsync_xal_get"); |
| 586 | + strcpy(ptr, name); |
| 587 | + if (datum_size) |
| 588 | + memcpy(ptr + len, datumbuf, datum_size); |
| 589 | + x->rxas[curr_rsync_xal.count].name_len = len; |
| 590 | + x->rxas[curr_rsync_xal.count].name = ptr; |
| 591 | + x->rxas[curr_rsync_xal.count].datum_len = datum_size; |
| 592 | + x->rxas[curr_rsync_xal.count].datum = ptr + len; |
| 593 | + x->count++; |
| 594 | + } |
| 595 | + if (x->count > 1) { |
| 596 | + qsort(x->rxas, x->count, sizeof (rsync_xa), rsync_xal_compare_names); |
| 597 | + } |
| 598 | + return 0; |
| 599 | +} |
| 600 | + |
| 601 | + |
| 602 | +/* generate the xattr(s) for this flist entry; |
| 603 | + * xattr(s) are either sent or cleaned-up by send_xattr() below */ |
| 604 | + |
| 605 | +int make_xattr(const struct file_struct *file, const char *fname) |
| 606 | +{ |
| 607 | + if (!preserve_xattrs || !file) |
| 608 | + return 1; |
| 609 | + |
| 610 | + rsync_xal_get(fname, &curr_rsync_xal); |
| 611 | + return 0; /* TODO: This needs to return 1 if no xattrs changed! */ |
| 612 | +} |
| 613 | + |
| 614 | +static ssize_t rsync_xal_find_matching(void) |
| 615 | +{ |
| 616 | + size_t i; |
| 617 | + size_t j; |
| 618 | + |
| 619 | + for (i = 0; i < rsync_xal_l.count; i++) { |
| 620 | + /* Wrong number of elements? */ |
| 621 | + if (rsync_xal_l.rxals[i].count != curr_rsync_xal.count) |
| 622 | + continue; |
| 623 | + /* any elements different? */ |
| 624 | + for (j = 0; j < curr_rsync_xal.count; j++) { |
| 625 | + if (rsync_xal_l.rxals[i].rxas[j].name_len != curr_rsync_xal.rxas[j].name_len |
| 626 | + || rsync_xal_l.rxals[i].rxas[j].datum_len != curr_rsync_xal.rxas[j].datum_len |
| 627 | + || strcmp(rsync_xal_l.rxals[i].rxas[j].name, curr_rsync_xal.rxas[j].name) |
| 628 | + || memcmp(rsync_xal_l.rxals[i].rxas[j].datum, curr_rsync_xal.rxas[j].datum, curr_rsync_xal.rxas[j].datum_len)) |
| 629 | + break; |
| 630 | + } |
| 631 | + /* no differences found. This is The One! */ |
| 632 | + if (j == curr_rsync_xal.count) |
| 633 | + break; |
| 634 | + } |
| 635 | + if (i < rsync_xal_l.count) |
| 636 | + return i; |
| 637 | + return (ssize_t)-1; |
| 638 | +} |
| 639 | + |
| 640 | +/* Store curr_rsync_xal on the end of rsync_xal_l */ |
| 641 | +static void rsync_xal_store(void) |
| 642 | +{ |
| 643 | + if (rsync_xal_l.count <= rsync_xal_l.alloc) { |
| 644 | + size_t new_alloc; |
| 645 | + void *new_xal; |
| 646 | + |
| 647 | + new_alloc = rsync_xal_l.count < RSYNC_XAL_LIST_INITIAL ? RSYNC_XAL_LIST_INITIAL : rsync_xal_l.count * 2; |
| 648 | + new_xal = realloc_array(rsync_xal_l.rxals, rsync_xal, new_alloc); |
| 649 | + if (!new_xal) |
| 650 | + out_of_memory("rsync_xal_store"); |
| 651 | + rsync_xal_l.alloc = new_alloc; |
| 652 | + rsync_xal_l.rxals = new_xal; |
| 653 | + } |
| 654 | + rsync_xal_l.rxals[rsync_xal_l.count] = curr_rsync_xal; |
| 655 | + rsync_xal_l.count++; |
| 656 | + curr_rsync_xal.count = 0; |
| 657 | + curr_rsync_xal.alloc = 0; |
| 658 | +} |
| 659 | + |
| 660 | +/* send the make_xattr()-generated xattr list for this flist entry, |
| 661 | + * or clean up after an flist entry that's not being sent (f == -1) */ |
| 662 | + |
| 663 | +void send_xattr(const struct file_struct *file, int f) |
| 664 | +{ |
| 665 | + ssize_t index; |
| 666 | + |
| 667 | + if (!preserve_xattrs || !file) |
| 668 | + return; |
| 669 | + |
| 670 | + if (f == -1) { |
| 671 | + rsync_xal_free(&curr_rsync_xal); |
| 672 | + return; |
| 673 | + } |
| 674 | + index = rsync_xal_find_matching(); |
| 675 | + if (index != -1) { |
| 676 | + write_byte(f, 'x'); |
| 677 | + write_int(f, index); |
| 678 | + rsync_xal_free(&curr_rsync_xal); |
| 679 | + } else { |
| 680 | + rsync_xa *rxa; |
| 681 | + size_t count; |
| 682 | + |
| 683 | + count = curr_rsync_xal.count; |
| 684 | + write_byte(f, 'X'); |
| 685 | + write_int(f, count); |
| 686 | + for (rxa = curr_rsync_xal.rxas; count--; rxa++) { |
| 687 | + write_int(f, rxa->name_len); |
| 688 | + write_int(f, rxa->datum_len); |
| 689 | + write_buf(f, rxa->name, rxa->name_len); |
| 690 | + write_buf(f, rxa->datum, rxa->datum_len); |
| 691 | + } |
| 692 | + rsync_xal_store(); |
| 693 | + } |
| 694 | +} |
| 695 | + |
| 696 | + |
| 697 | +/* ------------------------------------------------------------------------- */ |
| 698 | +/* receive and build the rsync_xattr_lists */ |
| 699 | + |
| 700 | +void receive_xattr(struct file_struct *file, int f) |
| 701 | +{ |
| 702 | + char *fname; |
| 703 | + int tag; |
| 704 | + |
| 705 | + if (!preserve_xattrs) |
| 706 | + return; |
| 707 | + fname = f_name(file, NULL); |
| 708 | + tag = read_byte(f); |
| 709 | + if (tag != 'X' && tag != 'x') { |
| 710 | + rprintf(FERROR, |
| 711 | + "%s: receive_xattr: unknown extended attribute type tag: %c\n", |
| 712 | + fname, tag); |
| 713 | + exit_cleanup(RERR_STREAMIO); |
| 714 | + } |
| 715 | + |
| 716 | + if (fxil.alloc <= fxil.count) { |
| 717 | + void *new_ptr; |
| 718 | + size_t new_alloc; |
| 719 | + |
| 720 | + if (fxil.count < RSYNC_XAL_LIST_INITIAL) |
| 721 | + new_alloc = fxil.alloc + RSYNC_XAL_LIST_INITIAL; |
| 722 | + else |
| 723 | + new_alloc = fxil.alloc * 2; |
| 724 | + new_ptr = realloc_array(fxil.filexalidxs, file_xal_index, new_alloc); |
| 725 | + if (!new_ptr) |
| 726 | + out_of_memory("receive_xattr"); |
| 727 | + if (verbose >= 3) { |
| 728 | + rprintf(FINFO, "receive_xattr to %lu bytes, %s move\n", |
| 729 | + (unsigned long)(new_alloc * sizeof (file_xal_index)), |
| 730 | + fxil.filexalidxs == new_ptr ? "did not" : "did"); |
| 731 | + } |
| 732 | + |
| 733 | + fxil.filexalidxs = new_ptr; |
| 734 | + fxil.alloc = new_alloc; |
| 735 | + } |
| 736 | + |
| 737 | + fxil.filexalidxs[fxil.count].file = file; |
| 738 | + if (tag == 'X') { |
| 739 | + size_t count; |
| 740 | + size_t i; |
| 741 | + |
| 742 | + fxil.filexalidxs[fxil.count].xalidx = rsync_xal_l.count; |
| 743 | + |
| 744 | + count = read_int(f); |
| 745 | + curr_rsync_xal.count = count; |
| 746 | + curr_rsync_xal.alloc = count; |
| 747 | + curr_rsync_xal.rxas = new_array(rsync_xa, count); |
| 748 | + if (!curr_rsync_xal.rxas) |
| 749 | + out_of_memory("receive_xattr"); |
| 750 | + for (i = 0; i < count; i++) { |
| 751 | + size_t name_len; |
| 752 | + size_t datum_len; |
| 753 | + char *ptr; |
| 754 | + |
| 755 | + name_len = read_int(f); |
| 756 | + datum_len = read_int(f); |
| 757 | + ptr = new_array(char, name_len + datum_len); |
| 758 | + if (!ptr) |
| 759 | + out_of_memory("receive_xattr"); |
| 760 | + read_buf(f, ptr, name_len); |
| 761 | + read_buf(f, ptr + name_len, datum_len); |
| 762 | + curr_rsync_xal.rxas[i].name_len = name_len; |
| 763 | + curr_rsync_xal.rxas[i].datum_len = datum_len; |
| 764 | + curr_rsync_xal.rxas[i].name = ptr; |
| 765 | + curr_rsync_xal.rxas[i].datum = ptr + name_len; |
| 766 | + } |
| 767 | + rsync_xal_store(); |
| 768 | + } else { |
| 769 | + size_t index; |
| 770 | + |
| 771 | + index = read_int(f); |
| 772 | + if (index >= rsync_xal_l.count) { |
| 773 | + rprintf(FERROR, "%s: receive_xattr: xa index %lu out of range\n", |
| 774 | + fname, (unsigned long)index); |
| 775 | + exit_cleanup(RERR_STREAMIO); |
| 776 | + } |
| 777 | + fxil.filexalidxs[fxil.count].xalidx = index; |
| 778 | + } |
| 779 | + fxil.count++; |
| 780 | +} |
| 781 | + |
| 782 | +static int rsync_xal_set(const char *fname, rsync_xal *x) |
| 783 | +{ |
| 784 | + size_t i; |
| 785 | + int ret = 0; |
| 786 | + |
| 787 | + for (i = 0; i < x->count; i++) { |
| 788 | + int status = sys_lsetxattr(fname, x->rxas[i].name, x->rxas[i].datum, x->rxas[i].datum_len, 0); |
| 789 | + if (status < 0) { |
| 790 | + rprintf(FERROR, "%s: rsync_xal_set: lsetxattr %s failed: %s\n", |
| 791 | + fname, x->rxas[i].name, strerror(errno)); |
| 792 | + ret = -1; |
| 793 | + } |
| 794 | + } |
| 795 | + return ret; |
| 796 | +} |
| 797 | + |
| 798 | +/* for duplicating xattrs on backups when using backup_dir */ |
| 799 | + |
| 800 | +int dup_xattr(const char *orig, const char *bak) |
| 801 | +{ |
| 802 | + int ret; |
| 803 | + |
| 804 | + if (!preserve_xattrs) |
| 805 | + return 1; |
| 806 | + |
| 807 | + if (rsync_xal_get(orig, &backup_xal) < 0) |
| 808 | + ret = rsync_xal_set(bak, &backup_xal); |
| 809 | + else |
| 810 | + ret = 0; |
| 811 | + rsync_xal_free(&backup_xal); |
| 812 | + return ret; |
| 813 | +} |
| 814 | + |
| 815 | +void push_keep_backup_xattr(const struct file_struct *file, const char *orig, const char *dest) |
| 816 | +{ |
| 817 | + if (!preserve_xattrs) |
| 818 | + return; |
| 819 | + |
| 820 | + backup_orig_file = file; |
| 821 | + backup_orig_fname = orig; |
| 822 | + backup_dest_fname = dest; |
| 823 | + rsync_xal_get(orig, &backup_xal); |
| 824 | +} |
| 825 | + |
| 826 | +static int set_keep_backup_xal(void) |
| 827 | +{ |
| 828 | + if (!preserve_xattrs) |
| 829 | + return 1; |
| 830 | + return rsync_xal_set(backup_dest_fname, &backup_xal); |
| 831 | +} |
| 832 | + |
| 833 | +void cleanup_keep_backup_xattr(void) |
| 834 | +{ |
| 835 | + if (!preserve_xattrs) |
| 836 | + return; |
| 837 | + |
| 838 | + backup_orig_file = NULL; |
| 839 | + backup_orig_fname = null_string; |
| 840 | + backup_dest_fname = null_string; |
| 841 | + rsync_xal_free(&backup_xal); |
| 842 | +} |
| 843 | + |
| 844 | +static int file_xal_index_compare(const void *x1, const void *x2) |
| 845 | +{ |
| 846 | + const file_xal_index *xa1; |
| 847 | + const file_xal_index *xa2; |
| 848 | + |
| 849 | + xa1 = x1; |
| 850 | + xa2 = x2; |
| 851 | + return xa1->file == xa2->file ? 0 : xa1->file < xa2->file ? -1 : 1; |
| 852 | +} |
| 853 | + |
| 854 | +void sort_file_xattr_index_lists(void) |
| 855 | +{ |
| 856 | + if (!preserve_xattrs) |
| 857 | + return; |
| 858 | + qsort(fxil.filexalidxs, fxil.count, sizeof (file_xal_index), file_xal_index_compare); |
| 859 | +} |
| 860 | + |
| 861 | +static int find_file_xal_index(const struct file_struct *file) |
| 862 | +{ |
| 863 | + int low = 0, high = fxil.count; |
| 864 | + const struct file_struct *file_mid; |
| 865 | + |
| 866 | + if (!high--) { |
| 867 | + rprintf(FERROR, "find_file_xal_index: no entries\n"); |
| 868 | + exit_cleanup(RERR_STREAMIO); |
| 869 | + return -1; |
| 870 | + } |
| 871 | + do { |
| 872 | + int mid = (high + low) / 2; |
| 873 | + file_mid = fxil.filexalidxs[mid].file; |
| 874 | + if (file_mid == file) |
| 875 | + return fxil.filexalidxs[mid].xalidx; |
| 876 | + if (file_mid > file) |
| 877 | + high = mid - 1; |
| 878 | + else |
| 879 | + low = mid + 1; |
| 880 | + } while (low < high); |
| 881 | + if (low == high) { |
| 882 | + file_mid = fxil.filexalidxs[low].file; |
| 883 | + if (file_mid == file) |
| 884 | + return fxil.filexalidxs[low].xalidx; |
| 885 | + } |
| 886 | + rprintf(FERROR, |
| 887 | + "find_file_xal_index: can't find entry for file in list\n"); |
| 888 | + exit_cleanup(RERR_STREAMIO); |
| 889 | + return -1; |
| 890 | +} |
| 891 | + |
| 892 | +/* set extended attributes on rsync-ed or keep_backup-ed file */ |
| 893 | + |
| 894 | +int set_xattr(const char *fname, const struct file_struct *file) |
| 895 | +{ |
| 896 | + int xalidx; |
| 897 | + rsync_xal *x; |
| 898 | + |
| 899 | + if (dry_run || !preserve_xattrs) |
| 900 | + return 1; |
| 901 | + if (file == backup_orig_file) { |
| 902 | + if (!strcmp(fname, backup_dest_fname)) |
| 903 | + return set_keep_backup_xal(); |
| 904 | + } |
| 905 | + xalidx = find_file_xal_index(file); |
| 906 | + x = &(rsync_xal_l.rxals[xalidx]); |
| 907 | + return rsync_xal_set(fname, x); |
| 908 | +} |
| 909 | + |
| 910 | +#endif /* SUPPORT_XATTRS */ |