| 1 | This patch adds basic support for extended attributes. It works, but there |
| 2 | are some things that still needs to be improved (see TODO list below). |
| 3 | |
| 4 | To use this patch, run these commands for a successful build: |
| 5 | |
| 6 | patch -p1 <patches/acls.diff |
| 7 | patch -p1 <patches/xattrs.diff |
| 8 | ./prepare-source |
| 9 | ./configure --enable-acl-support --enable-xattr-support |
| 10 | make |
| 11 | |
| 12 | Alternately, if you don't want ACL support, configure it this way: |
| 13 | |
| 14 | ./configure --enable-xattr-support |
| 15 | |
| 16 | TODO: |
| 17 | |
| 18 | - This patch needs to more efficiently handle large xattrs, especially when |
| 19 | they're unchanged. |
| 20 | |
| 21 | - We need to affect the itemized output to know when xattrs are being updated. |
| 22 | |
| 23 | - We need to affect the --link-dest option to avoid hard-linking two files |
| 24 | that differ in their xattrs (when --xattrs was specified). |
| 25 | |
| 26 | --- old/Makefile.in |
| 27 | +++ new/Makefile.in |
| 28 | @@ -28,13 +28,13 @@ VERSION=@VERSION@ |
| 29 | |
| 30 | HEADERS=byteorder.h config.h errcode.h proto.h rsync.h smb_acls.h lib/pool_alloc.h |
| 31 | LIBOBJ=lib/wildmatch.o lib/compat.o lib/snprintf.o lib/mdfour.o \ |
| 32 | - lib/permstring.o lib/pool_alloc.o lib/sysacls.o @LIBOBJS@ |
| 33 | + lib/permstring.o lib/pool_alloc.o lib/sysacls.o lib/sysxattr.o @LIBOBJS@ |
| 34 | ZLIBOBJ=zlib/deflate.o zlib/inffast.o zlib/inflate.o zlib/inftrees.o \ |
| 35 | zlib/trees.o zlib/zutil.o zlib/adler32.o zlib/compress.o zlib/crc32.o |
| 36 | OBJS1=flist.o rsync.o generator.o receiver.o cleanup.o sender.o exclude.o \ |
| 37 | util.o main.o checksum.o match.o syscall.o log.o backup.o |
| 38 | OBJS2=options.o io.o compat.o hlink.o token.o uidlist.o socket.o \ |
| 39 | - fileio.o batch.o clientname.o chmod.o acls.o |
| 40 | + fileio.o batch.o clientname.o chmod.o acls.o xattr.o |
| 41 | OBJS3=progress.o pipe.o |
| 42 | DAEMON_OBJ = params.o loadparm.o clientserver.o access.o connection.o authenticate.o |
| 43 | popt_OBJS=popt/findme.o popt/popt.o popt/poptconfig.o \ |
| 44 | --- old/backup.c |
| 45 | +++ new/backup.c |
| 46 | @@ -23,6 +23,7 @@ |
| 47 | extern int verbose; |
| 48 | extern int am_root; |
| 49 | extern int preserve_acls; |
| 50 | +extern int preserve_xattrs; |
| 51 | extern int preserve_devices; |
| 52 | extern int preserve_specials; |
| 53 | extern int preserve_links; |
| 54 | @@ -134,6 +135,9 @@ static int make_bak_dir(char *fullpath) |
| 55 | #ifdef SUPPORT_ACLS |
| 56 | sx.acc_acl = sx.def_acl = NULL; |
| 57 | #endif |
| 58 | +#ifdef SUPPORT_XATTRS |
| 59 | + sx.xattr = NULL; |
| 60 | +#endif |
| 61 | if (!(file = make_file(rel, NULL, NULL, 0, NO_FILTERS))) |
| 62 | continue; |
| 63 | #ifdef SUPPORT_ACLS |
| 64 | @@ -143,6 +147,12 @@ static int make_bak_dir(char *fullpath) |
| 65 | free_acl(&sx); |
| 66 | } |
| 67 | #endif |
| 68 | +#ifdef SUPPORT_XATTRS |
| 69 | + if (preserve_xattrs) { |
| 70 | + get_xattr(rel, &sx); |
| 71 | + cache_xattr(file, &sx); |
| 72 | + } |
| 73 | +#endif |
| 74 | set_file_attrs(fullpath, file, NULL, 0); |
| 75 | free(file); |
| 76 | } |
| 77 | @@ -194,6 +204,9 @@ static int keep_backup(const char *fname |
| 78 | #ifdef SUPPORT_ACLS |
| 79 | sx.acc_acl = sx.def_acl = NULL; |
| 80 | #endif |
| 81 | +#ifdef SUPPORT_XATTRS |
| 82 | + sx.xattr = NULL; |
| 83 | +#endif |
| 84 | |
| 85 | if (!(file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) |
| 86 | return 1; /* the file could have disappeared */ |
| 87 | @@ -210,6 +223,12 @@ static int keep_backup(const char *fname |
| 88 | free_acl(&sx); |
| 89 | } |
| 90 | #endif |
| 91 | +#ifdef SUPPORT_XATTRS |
| 92 | + if (preserve_xattrs) { |
| 93 | + get_xattr(fname, &sx); |
| 94 | + cache_xattr(file, &sx); |
| 95 | + } |
| 96 | +#endif |
| 97 | |
| 98 | /* Check to see if this is a device file, or link */ |
| 99 | if ((am_root && preserve_devices && IS_DEVICE(file->mode)) |
| 100 | --- old/compat.c |
| 101 | +++ new/compat.c |
| 102 | @@ -64,6 +64,8 @@ void setup_protocol(int f_out,int f_in) |
| 103 | preserve_gid = ++file_extra_cnt; |
| 104 | if (preserve_acls && !am_sender) |
| 105 | preserve_acls = ++file_extra_cnt; |
| 106 | + if (preserve_xattrs && !am_sender) |
| 107 | + preserve_xattrs = ++file_extra_cnt; |
| 108 | |
| 109 | if (remote_protocol == 0) { |
| 110 | if (!read_batch) |
| 111 | --- old/configure.in |
| 112 | +++ new/configure.in |
| 113 | @@ -881,6 +881,40 @@ samba_cv_HAVE_ACL_GET_PERM_NP=yes,samba_ |
| 114 | esac |
| 115 | fi |
| 116 | |
| 117 | +AC_CHECK_HEADERS(attr/xattr.h) |
| 118 | +AC_CHECK_HEADERS(sys/xattr.h) |
| 119 | +AC_CHECK_HEADERS(sys/extattr.h) |
| 120 | +AC_MSG_CHECKING(whether to support extended attributes) |
| 121 | +AC_ARG_ENABLE(xattr-support, |
| 122 | +AC_HELP_STRING([--enable-xattr-support], [Include extended attribute support (default=no)]), |
| 123 | +[ case "$enableval" in |
| 124 | + yes) |
| 125 | + case "$host_os" in |
| 126 | + *linux*) |
| 127 | + AC_MSG_RESULT(Using Linux xattrs) |
| 128 | + AC_DEFINE(HAVE_LINUX_XATTRS, 1, [True if you have Linux xattrs]) |
| 129 | + ;; |
| 130 | + darwin*) |
| 131 | + AC_MSG_RESULT(Using OS X xattrs) |
| 132 | + AC_DEFINE(HAVE_OSX_XATTRS, 1, [True if you have Mac OS X xattrs]) |
| 133 | + ;; |
| 134 | + freebsd*) |
| 135 | + AC_MSG_RESULT(Using FreeBSD extattrs) |
| 136 | + AC_DEFINE(HAVE_FREEBSD_XATTRS, 1, [True if you have FreeBSD xattrs]) |
| 137 | + ;; |
| 138 | + *) |
| 139 | + AC_MSG_RESULT(Xattrs requested but not Linux or OS X. Good luck...) |
| 140 | + ;; |
| 141 | + esac |
| 142 | + ;; |
| 143 | + *) |
| 144 | + AC_MSG_RESULT(no) |
| 145 | + AC_DEFINE(HAVE_NO_XATTRS, 1, [True if you don't have extended attributes]) |
| 146 | + esac ], |
| 147 | + AC_MSG_RESULT(no) |
| 148 | + AC_DEFINE(HAVE_NO_XATTRS, 1, [True if you don't have extended attributes]) |
| 149 | +) |
| 150 | + |
| 151 | AC_CONFIG_FILES([Makefile lib/dummy zlib/dummy popt/dummy shconfig]) |
| 152 | AC_OUTPUT |
| 153 | |
| 154 | --- old/flist.c |
| 155 | +++ new/flist.c |
| 156 | @@ -42,6 +42,7 @@ extern int one_file_system; |
| 157 | extern int copy_dirlinks; |
| 158 | extern int keep_dirlinks; |
| 159 | extern int preserve_acls; |
| 160 | +extern int preserve_xattrs; |
| 161 | extern int preserve_links; |
| 162 | extern int preserve_hard_links; |
| 163 | extern int preserve_devices; |
| 164 | @@ -864,6 +865,10 @@ static struct file_struct *recv_file_ent |
| 165 | if (preserve_acls && !S_ISLNK(mode)) |
| 166 | receive_acl(file, f); |
| 167 | #endif |
| 168 | +#ifdef SUPPORT_XATTRS |
| 169 | + if (preserve_xattrs) |
| 170 | + receive_xattr(file, f ); |
| 171 | +#endif |
| 172 | |
| 173 | if (S_ISREG(mode) || S_ISLNK(mode)) |
| 174 | stats.total_size += file_length; |
| 175 | @@ -1136,7 +1141,7 @@ static struct file_struct *send_file_nam |
| 176 | int flags, int filter_flags) |
| 177 | { |
| 178 | struct file_struct *file; |
| 179 | -#ifdef SUPPORT_ACLS |
| 180 | +#if defined SUPPORT_ACLS || defined SUPPORT_XATTRS |
| 181 | statx sx; |
| 182 | #endif |
| 183 | |
| 184 | @@ -1155,6 +1160,13 @@ static struct file_struct *send_file_nam |
| 185 | return NULL; |
| 186 | } |
| 187 | #endif |
| 188 | +#ifdef SUPPORT_XATTRS |
| 189 | + if (preserve_xattrs && f >= 0) { |
| 190 | + sx.xattr = NULL; |
| 191 | + if (get_xattr(fname, &sx) < 0) |
| 192 | + return NULL; |
| 193 | + } |
| 194 | +#endif |
| 195 | |
| 196 | maybe_emit_filelist_progress(flist->count + flist_count_offset); |
| 197 | |
| 198 | @@ -1168,6 +1180,10 @@ static struct file_struct *send_file_nam |
| 199 | free_acl(&sx); |
| 200 | } |
| 201 | #endif |
| 202 | +#ifdef SUPPORT_XATTRS |
| 203 | + if (preserve_xattrs) |
| 204 | + send_xattr(&sx, f); |
| 205 | +#endif |
| 206 | } |
| 207 | return file; |
| 208 | } |
| 209 | --- old/lib/sysxattr.c |
| 210 | +++ new/lib/sysxattr.c |
| 211 | @@ -0,0 +1,135 @@ |
| 212 | +/* |
| 213 | + * Extended attribute support for rsync. |
| 214 | + * |
| 215 | + * Copyright (C) 2004 Red Hat, Inc. |
| 216 | + * Written by Jay Fenlason. |
| 217 | + * |
| 218 | + * This program is free software; you can redistribute it and/or modify |
| 219 | + * it under the terms of the GNU General Public License as published by |
| 220 | + * the Free Software Foundation; either version 2 of the License, or |
| 221 | + * (at your option) any later version. |
| 222 | + * |
| 223 | + * This program is distributed in the hope that it will be useful, |
| 224 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 225 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 226 | + * GNU General Public License for more details. |
| 227 | + * |
| 228 | + * You should have received a copy of the GNU General Public License along |
| 229 | + * with this program; if not, write to the Free Software Foundation, Inc., |
| 230 | + * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. |
| 231 | + */ |
| 232 | + |
| 233 | +#include "rsync.h" |
| 234 | +#include "sysxattr.h" |
| 235 | + |
| 236 | +#ifdef SUPPORT_XATTRS |
| 237 | + |
| 238 | +#if defined HAVE_LINUX_XATTRS |
| 239 | + |
| 240 | +ssize_t sys_lgetxattr(const char *path, const char *name, void *value, size_t size) |
| 241 | +{ |
| 242 | + return lgetxattr(path, name, value, size); |
| 243 | +} |
| 244 | + |
| 245 | +ssize_t sys_fgetxattr(int filedes, const char *name, void *value, size_t size) |
| 246 | +{ |
| 247 | + return fgetxattr(filedes, name, value, size); |
| 248 | +} |
| 249 | + |
| 250 | +int sys_lsetxattr(const char *path, const char *name, const void *value, size_t size) |
| 251 | +{ |
| 252 | + return lsetxattr(path, name, value, size, 0); |
| 253 | +} |
| 254 | + |
| 255 | +int sys_lremovexattr(const char *path, const char *name) |
| 256 | +{ |
| 257 | + return lremovexattr(path, name); |
| 258 | +} |
| 259 | + |
| 260 | +ssize_t sys_llistxattr(const char *path, char *list, size_t size) |
| 261 | +{ |
| 262 | + return llistxattr(path, list, size); |
| 263 | +} |
| 264 | + |
| 265 | +#elif HAVE_OSX_XATTRS |
| 266 | + |
| 267 | +ssize_t sys_lgetxattr(const char *path, const char *name, void *value, size_t size) |
| 268 | +{ |
| 269 | + return getxattr(path, name, value, size, 0, XATTR_NOFOLLOW); |
| 270 | +} |
| 271 | + |
| 272 | +ssize_t sys_fgetxattr(int filedes, const char *name, void *value, size_t size) |
| 273 | +{ |
| 274 | + return fgetxattr(filedes, name, value, size, 0, 0); |
| 275 | +} |
| 276 | + |
| 277 | +int sys_lsetxattr(const char *path, const char *name, const void *value, size_t size) |
| 278 | +{ |
| 279 | + return setxattr(path, name, value, size, 0, XATTR_NOFOLLOW); |
| 280 | +} |
| 281 | + |
| 282 | +int sys_lremovexattr(const char *path, const char *name) |
| 283 | +{ |
| 284 | + return removexattr(path, name, XATTR_NOFOLLOW); |
| 285 | +} |
| 286 | + |
| 287 | +ssize_t sys_llistxattr(const char *path, char *list, size_t size) |
| 288 | +{ |
| 289 | + return listxattr(path, list, size, XATTR_NOFOLLOW); |
| 290 | +} |
| 291 | + |
| 292 | +#elif HAVE_FREEBSD_XATTRS |
| 293 | + |
| 294 | +ssize_t sys_lgetxattr(const char *path, const char *name, void *value, size_t size) |
| 295 | +{ |
| 296 | + return extattr_get_link(path, EXTATTR_NAMESPACE_USER, name, value, size); |
| 297 | +} |
| 298 | + |
| 299 | +ssize_t sys_fgetxattr(int filedes, const char *name, void *value, size_t size) |
| 300 | +{ |
| 301 | + return extattr_get_fd(filedes, EXTATTR_NAMESPACE_USER, name, value, size); |
| 302 | +} |
| 303 | + |
| 304 | +int sys_lsetxattr(const char *path, const char *name, const void *value, size_t size) |
| 305 | +{ |
| 306 | + return extattr_set_link(path, EXTATTR_NAMESPACE_USER, name, value, size); |
| 307 | +} |
| 308 | + |
| 309 | +int sys_lremovexattr(const char *path, const char *name) |
| 310 | +{ |
| 311 | + return extattr_delete_link(path, EXTATTR_NAMESPACE_USER, name); |
| 312 | +} |
| 313 | + |
| 314 | +ssize_t sys_llistxattr(const char *path, char *list, size_t size) |
| 315 | +{ |
| 316 | + unsigned char keylen; |
| 317 | + ssize_t off, len = extattr_list_link(path, EXTATTR_NAMESPACE_USER, list, size); |
| 318 | + |
| 319 | + if (len <= 0 || (size_t)len > size) |
| 320 | + return len; |
| 321 | + |
| 322 | + /* FreeBSD puts a single-byte length before each string, with no '\0' |
| 323 | + * terminator. We need to change this into a series of null-terminted |
| 324 | + * strings. Since the size is the same, we can simply transform the |
| 325 | + * output in place. */ |
| 326 | + for (off = 0; off < len; off += keylen + 1) { |
| 327 | + keylen = ((unsigned char*)list)[off]; |
| 328 | + if (off + keylen >= len) { |
| 329 | + /* Should be impossible, but kernel bugs happen! */ |
| 330 | + errno = EINVAL; |
| 331 | + return -1; |
| 332 | + } |
| 333 | + memmove(list+off, list+off+1, keylen); |
| 334 | + list[off+keylen] = '\0'; |
| 335 | + } |
| 336 | + |
| 337 | + return len; |
| 338 | +} |
| 339 | + |
| 340 | +#else |
| 341 | + |
| 342 | +#error You need to create xattr compatibility functions. |
| 343 | + |
| 344 | +#endif |
| 345 | + |
| 346 | +#endif /* SUPPORT_XATTRS */ |
| 347 | --- old/lib/sysxattr.h |
| 348 | +++ new/lib/sysxattr.h |
| 349 | @@ -0,0 +1,26 @@ |
| 350 | +#ifdef SUPPORT_XATTRS |
| 351 | + |
| 352 | +#if defined HAVE_ATTR_XATTR_H |
| 353 | +#include <attr/xattr.h> |
| 354 | +#elif defined HAVE_SYS_XATTR_H |
| 355 | +#include <sys/xattr.h> |
| 356 | +#elif defined HAVE_SYS_EXTATTR_H |
| 357 | +#include <sys/extattr.h> |
| 358 | +#endif |
| 359 | + |
| 360 | +/* Linux 2.4 does not define this as a distinct errno value: */ |
| 361 | +#ifndef ENOATTR |
| 362 | +#define ENOATTR ENODATA |
| 363 | +#endif |
| 364 | + |
| 365 | +ssize_t sys_lgetxattr(const char *path, const char *name, void *value, size_t size); |
| 366 | +ssize_t sys_fgetxattr(int filedes, const char *name, void *value, size_t size); |
| 367 | +int sys_lsetxattr(const char *path, const char *name, const void *value, size_t size); |
| 368 | +int sys_lremovexattr(const char *path, const char *name); |
| 369 | +ssize_t sys_llistxattr(const char *path, char *list, size_t size); |
| 370 | + |
| 371 | +#else |
| 372 | + |
| 373 | +/* No xattrs available */ |
| 374 | + |
| 375 | +#endif |
| 376 | --- old/options.c |
| 377 | +++ new/options.c |
| 378 | @@ -47,6 +47,7 @@ int copy_links = 0; |
| 379 | int preserve_links = 0; |
| 380 | int preserve_hard_links = 0; |
| 381 | int preserve_acls = 0; |
| 382 | +int preserve_xattrs = 0; |
| 383 | int preserve_perms = 0; |
| 384 | int preserve_executability = 0; |
| 385 | int preserve_devices = 0; |
| 386 | @@ -200,6 +201,7 @@ static void print_rsync_version(enum log |
| 387 | char const *have_inplace = "no "; |
| 388 | char const *hardlinks = "no "; |
| 389 | char const *acls = "no "; |
| 390 | + char const *xattrs = "no "; |
| 391 | char const *links = "no "; |
| 392 | char const *ipv6 = "no "; |
| 393 | STRUCT_STAT *dumstat; |
| 394 | @@ -219,7 +221,9 @@ static void print_rsync_version(enum log |
| 395 | #ifdef SUPPORT_ACLS |
| 396 | acls = ""; |
| 397 | #endif |
| 398 | - |
| 399 | +#ifdef SUPPORT_XATTRS |
| 400 | + xattrs = ""; |
| 401 | +#endif |
| 402 | #ifdef SUPPORT_LINKS |
| 403 | links = ""; |
| 404 | #endif |
| 405 | @@ -238,8 +242,8 @@ static void print_rsync_version(enum log |
| 406 | (int)(sizeof (int64) * 8)); |
| 407 | rprintf(f, " %ssocketpairs, %shardlinks, %ssymlinks, %sIPv6, batchfiles, %sinplace,\n", |
| 408 | got_socketpair, hardlinks, links, ipv6, have_inplace); |
| 409 | - rprintf(f, " %sappend, %sACLs\n", |
| 410 | - have_inplace, acls); |
| 411 | + rprintf(f, " %sappend, %sACLs, %sxattrs\n", |
| 412 | + have_inplace, acls, xattrs); |
| 413 | |
| 414 | #ifdef MAINTAINER_MODE |
| 415 | rprintf(f, "Panic Action: \"%s\"\n", get_panic_action()); |
| 416 | @@ -285,7 +289,7 @@ void usage(enum logcode F) |
| 417 | rprintf(F," -q, --quiet suppress non-error messages\n"); |
| 418 | rprintf(F," --no-motd suppress daemon-mode MOTD (see manpage caveat)\n"); |
| 419 | rprintf(F," -c, --checksum skip based on checksum, not mod-time & size\n"); |
| 420 | - rprintf(F," -a, --archive archive mode; same as -rlptgoD (no -H, -A)\n"); |
| 421 | + rprintf(F," -a, --archive archive mode; equals -rlptgoD (no -H,-A,-X)\n"); |
| 422 | rprintf(F," --no-OPTION turn off an implied OPTION (e.g. --no-D)\n"); |
| 423 | rprintf(F," -r, --recursive recurse into directories\n"); |
| 424 | rprintf(F," -R, --relative use relative path names\n"); |
| 425 | @@ -310,6 +314,9 @@ void usage(enum logcode F) |
| 426 | #ifdef SUPPORT_ACLS |
| 427 | rprintf(F," -A, --acls preserve ACLs (implies --perms)\n"); |
| 428 | #endif |
| 429 | +#ifdef SUPPORT_XATTRS |
| 430 | + rprintf(F," -X, --xattrs preserve extended attributes (implies --perms)\n"); |
| 431 | +#endif |
| 432 | rprintf(F," -o, --owner preserve owner (super-user only)\n"); |
| 433 | rprintf(F," -g, --group preserve group\n"); |
| 434 | rprintf(F," --devices preserve device files (super-user only)\n"); |
| 435 | @@ -433,6 +440,9 @@ static struct poptOption long_options[] |
| 436 | {"acls", 'A', POPT_ARG_NONE, 0, 'A', 0, 0 }, |
| 437 | {"no-acls", 0, POPT_ARG_VAL, &preserve_acls, 0, 0, 0 }, |
| 438 | {"no-A", 0, POPT_ARG_VAL, &preserve_acls, 0, 0, 0 }, |
| 439 | + {"xattrs", 'X', POPT_ARG_NONE, 0, 'X', 0, 0 }, |
| 440 | + {"no-xattrs", 0, POPT_ARG_VAL, &preserve_xattrs, 0, 0, 0 }, |
| 441 | + {"no-X", 0, POPT_ARG_VAL, &preserve_xattrs, 0, 0, 0 }, |
| 442 | {"times", 't', POPT_ARG_VAL, &preserve_times, 1, 0, 0 }, |
| 443 | {"no-times", 0, POPT_ARG_VAL, &preserve_times, 0, 0, 0 }, |
| 444 | {"no-t", 0, POPT_ARG_VAL, &preserve_times, 0, 0, 0 }, |
| 445 | @@ -1121,6 +1131,17 @@ int parse_arguments(int *argc, const cha |
| 446 | return 0; |
| 447 | #endif |
| 448 | |
| 449 | + case 'X': |
| 450 | +#ifdef SUPPORT_XATTRS |
| 451 | + preserve_xattrs = 1; |
| 452 | + preserve_perms = 1; |
| 453 | + break; |
| 454 | +#else |
| 455 | + snprintf(err_buf,sizeof(err_buf), |
| 456 | + "extended attributes are not supported on this %s\n", |
| 457 | + am_server ? "server" : "client"); |
| 458 | + return 0; |
| 459 | +#endif |
| 460 | |
| 461 | default: |
| 462 | /* A large opt value means that set_refuse_options() |
| 463 | @@ -1585,6 +1606,10 @@ void server_options(char **args,int *arg |
| 464 | if (preserve_acls) |
| 465 | argstr[x++] = 'A'; |
| 466 | #endif |
| 467 | +#ifdef SUPPORT_XATTRS |
| 468 | + if (preserve_xattrs) |
| 469 | + argstr[x++] = 'X'; |
| 470 | +#endif |
| 471 | if (recurse) |
| 472 | argstr[x++] = 'r'; |
| 473 | if (always_checksum) |
| 474 | --- old/rsync.c |
| 475 | +++ new/rsync.c |
| 476 | @@ -32,6 +32,7 @@ |
| 477 | extern int verbose; |
| 478 | extern int dry_run; |
| 479 | extern int preserve_acls; |
| 480 | +extern int preserve_xattrs; |
| 481 | extern int preserve_perms; |
| 482 | extern int preserve_executability; |
| 483 | extern int preserve_times; |
| 484 | @@ -321,6 +322,10 @@ int set_file_attrs(char *fname, struct f |
| 485 | if (daemon_chmod_modes && !S_ISLNK(new_mode)) |
| 486 | new_mode = tweak_mode(new_mode, daemon_chmod_modes); |
| 487 | |
| 488 | +#ifdef SUPPORT_XATTRS |
| 489 | + if (preserve_xattrs && set_xattr(fname, file, sxp) == 0) |
| 490 | + updated = 1; |
| 491 | +#endif |
| 492 | #ifdef SUPPORT_ACLS |
| 493 | /* It's OK to call set_acl() now, even for a dir, as the generator |
| 494 | * will enable owner-writability using chmod, if necessary. |
| 495 | --- old/rsync.h |
| 496 | +++ new/rsync.h |
| 497 | @@ -551,6 +551,10 @@ struct idev_node { |
| 498 | #define ACLS_NEED_MASK 1 |
| 499 | #endif |
| 500 | |
| 501 | +#ifndef HAVE_NO_XATTRS |
| 502 | +#define SUPPORT_XATTRS 1 |
| 503 | +#endif |
| 504 | + |
| 505 | #define GID_NONE ((gid_t)-1) |
| 506 | |
| 507 | union file_extras { |
| 508 | @@ -571,6 +575,7 @@ extern int file_extra_cnt; |
| 509 | extern int preserve_uid; |
| 510 | extern int preserve_gid; |
| 511 | extern int preserve_acls; |
| 512 | +extern int preserve_xattrs; |
| 513 | |
| 514 | #define FILE_STRUCT_LEN (offsetof(struct file_struct, basename)) |
| 515 | #define EXTRA_LEN (sizeof (union file_extras)) |
| 516 | @@ -604,6 +609,7 @@ extern int preserve_acls; |
| 517 | #define F_OWNER(f) REQ_EXTRA(f, preserve_uid)->unum |
| 518 | #define F_GROUP(f) REQ_EXTRA(f, preserve_gid)->unum |
| 519 | #define F_ACL(f) REQ_EXTRA(f, preserve_acls)->unum |
| 520 | +#define F_XATTR(f) REQ_EXTRA(f, preserve_xattrs)->unum |
| 521 | |
| 522 | /* These items are per-entry optional and mutally exclusive: */ |
| 523 | #define F_HL_GNUM(f) OPT_EXTRA(f, LEN64_BUMP(f))->num |
| 524 | @@ -795,6 +801,9 @@ typedef struct { |
| 525 | struct rsync_acl *acc_acl; /* access ACL */ |
| 526 | struct rsync_acl *def_acl; /* default ACL */ |
| 527 | #endif |
| 528 | +#ifdef SUPPORT_XATTRS |
| 529 | + item_list *xattr; |
| 530 | +#endif |
| 531 | } statx; |
| 532 | |
| 533 | #define ACL_READY(sx) ((sx).acc_acl != NULL) |
| 534 | --- old/rsync.yo |
| 535 | +++ new/rsync.yo |
| 536 | @@ -301,7 +301,7 @@ to the detailed description below for a |
| 537 | -q, --quiet suppress non-error messages |
| 538 | --no-motd suppress daemon-mode MOTD (see caveat) |
| 539 | -c, --checksum skip based on checksum, not mod-time & size |
| 540 | - -a, --archive archive mode; same as -rlptgoD (no -H, -A) |
| 541 | + -a, --archive archive mode; equals -rlptgoD (no -H,-A,-X) |
| 542 | --no-OPTION turn off an implied OPTION (e.g. --no-D) |
| 543 | -r, --recursive recurse into directories |
| 544 | -R, --relative use relative path names |
| 545 | @@ -324,6 +324,7 @@ to the detailed description below for a |
| 546 | -E, --executability preserve executability |
| 547 | --chmod=CHMOD affect file and/or directory permissions |
| 548 | -A, --acls preserve ACLs (implies -p) |
| 549 | + -X, --xattrs preserve extended attrs (implies -p) |
| 550 | -o, --owner preserve owner (super-user only) |
| 551 | -g, --group preserve group |
| 552 | --devices preserve device files (super-user only) |
| 553 | @@ -831,6 +832,11 @@ dit(bf(-A, --acls)) This option causes r |
| 554 | ACLs to be the same as the source ACLs. This nonstandard option only |
| 555 | works if the remote rsync also supports it. bf(--acls) implies bf(--perms). |
| 556 | |
| 557 | +dit(bf(-X, --xattrs)) This option causes rsync to update the remote |
| 558 | +extended attributes to be the same as the local ones. This will work |
| 559 | +only if the remote machine's rsync supports this option also. This is |
| 560 | +a non-standard option. |
| 561 | + |
| 562 | dit(bf(--chmod)) This option tells rsync to apply one or more |
| 563 | comma-separated "chmod" strings to the permission of the files in the |
| 564 | transfer. The resulting value is treated as though it was the permissions |
| 565 | --- old/xattr.c |
| 566 | +++ new/xattr.c |
| 567 | @@ -0,0 +1,459 @@ |
| 568 | +/* |
| 569 | + * Extended Attribute support for rsync. |
| 570 | + * Written by Jay Fenlason, vaguely based on the ACLs patch. |
| 571 | + * |
| 572 | + * Copyright (C) 2004 Red Hat, Inc. |
| 573 | + * Copyright (C) 2006 Wayne Davison |
| 574 | + * |
| 575 | + * This program is free software; you can redistribute it and/or modify |
| 576 | + * it under the terms of the GNU General Public License as published by |
| 577 | + * the Free Software Foundation; either version 2 of the License, or |
| 578 | + * (at your option) any later version. |
| 579 | + * |
| 580 | + * This program is distributed in the hope that it will be useful, |
| 581 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 582 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 583 | + * GNU General Public License for more details. |
| 584 | + * |
| 585 | + * You should have received a copy of the GNU General Public License along |
| 586 | + * with this program; if not, write to the Free Software Foundation, Inc., |
| 587 | + * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. |
| 588 | + */ |
| 589 | + |
| 590 | +#include "rsync.h" |
| 591 | +#include "lib/sysxattr.h" |
| 592 | + |
| 593 | +#ifdef SUPPORT_XATTRS |
| 594 | + |
| 595 | +extern int dry_run; |
| 596 | +extern int am_root; |
| 597 | +extern int read_only; |
| 598 | +extern int list_only; |
| 599 | + |
| 600 | +#define RSYNC_XAL_INITIAL 5 |
| 601 | +#define RSYNC_XAL_LIST_INITIAL 100 |
| 602 | + |
| 603 | +#define HAS_PREFIX(str, prfx) (*(str) == *(prfx) \ |
| 604 | + && strncmp(str, prfx, sizeof (prfx) - 1) == 0) |
| 605 | + |
| 606 | +#define USER_PREFIX "user." |
| 607 | +#define UPRE_LEN ((int)sizeof USER_PREFIX - 1) |
| 608 | +#define SYSTEM_PREFIX "system." |
| 609 | +#define SPRE_LEN ((int)sizeof SYSTEM_PREFIX - 1) |
| 610 | + |
| 611 | +#ifdef HAVE_LINUX_XATTRS |
| 612 | +#define RPRE_LEN 0 |
| 613 | +#else |
| 614 | +#define RSYNC_PREFIX "rsync." |
| 615 | +#define RPRE_LEN ((int)sizeof RSYNC_PREFIX - 1) |
| 616 | +#endif |
| 617 | + |
| 618 | +typedef struct { |
| 619 | + char *datum, *name; |
| 620 | + size_t datum_len, name_len; |
| 621 | +} rsync_xa; |
| 622 | + |
| 623 | +static size_t namebuf_len = 0; |
| 624 | +static char *namebuf = NULL; |
| 625 | + |
| 626 | +static item_list empty_xattr = EMPTY_ITEM_LIST; |
| 627 | +static item_list rsync_xal_l = EMPTY_ITEM_LIST; |
| 628 | + |
| 629 | +/* ------------------------------------------------------------------------- */ |
| 630 | + |
| 631 | +static void rsync_xal_free(item_list *xalp) |
| 632 | +{ |
| 633 | + size_t i; |
| 634 | + rsync_xa *rxas = xalp->items; |
| 635 | + |
| 636 | + for (i = 0; i < xalp->count; i++) { |
| 637 | + free(rxas[i].datum); |
| 638 | + /*free(rxas[i].name);*/ |
| 639 | + } |
| 640 | + xalp->count = 0; |
| 641 | +} |
| 642 | + |
| 643 | +void free_xattr(statx *sxp) |
| 644 | +{ |
| 645 | + rsync_xal_free(sxp->xattr); |
| 646 | + free(sxp->xattr); |
| 647 | + sxp->xattr = NULL; |
| 648 | +} |
| 649 | + |
| 650 | +static int rsync_xal_compare_names(const void *x1, const void *x2) |
| 651 | +{ |
| 652 | + const rsync_xa *xa1 = x1; |
| 653 | + const rsync_xa *xa2 = x2; |
| 654 | + return strcmp(xa1->name, xa2->name); |
| 655 | +} |
| 656 | + |
| 657 | +static ssize_t rsync_xal_list(const char *fname) |
| 658 | +{ |
| 659 | + ssize_t list_len; |
| 660 | + |
| 661 | + if (!namebuf) { |
| 662 | + namebuf_len = 1024; |
| 663 | + namebuf = new_array(char, namebuf_len); |
| 664 | + if (!namebuf) |
| 665 | + out_of_memory("rsync_xal_list"); |
| 666 | + } |
| 667 | + |
| 668 | + /* The length returned includes all the '\0' terminators. */ |
| 669 | + list_len = sys_llistxattr(fname, namebuf, namebuf_len); |
| 670 | + if (list_len > (ssize_t)namebuf_len) { |
| 671 | + list_len = -1; |
| 672 | + errno = ERANGE; |
| 673 | + } |
| 674 | + if (list_len < 0) { |
| 675 | + if (errno == ENOTSUP) |
| 676 | + return 0; |
| 677 | + if (errno == ERANGE) { |
| 678 | + list_len = sys_llistxattr(fname, NULL, 0); |
| 679 | + if (list_len < 0) { |
| 680 | + rsyserr(FERROR, errno, |
| 681 | + "rsync_xal_list: llistxattr(\"%s\",0) failed", |
| 682 | + fname); |
| 683 | + return -1; |
| 684 | + } |
| 685 | + namebuf = realloc_array(namebuf, char, list_len + 1024); |
| 686 | + if (!namebuf) |
| 687 | + out_of_memory("rsync_xal_list"); |
| 688 | + namebuf_len = list_len + 1024; |
| 689 | + list_len = sys_llistxattr(fname, namebuf, namebuf_len); |
| 690 | + if (list_len < 0) { |
| 691 | + rsyserr(FERROR, errno, |
| 692 | + "rsync_xal_list: llistxattr(\"%s\",%ld) failed", |
| 693 | + fname, (long)namebuf_len); |
| 694 | + return -1; |
| 695 | + } |
| 696 | + } else { |
| 697 | + rsyserr(FERROR, errno, |
| 698 | + "rsync_xal_list: llistxattr(\"%s\",%ld) failed", |
| 699 | + fname, (long)namebuf_len); |
| 700 | + return -1; |
| 701 | + } |
| 702 | + } |
| 703 | + |
| 704 | + return list_len; |
| 705 | +} |
| 706 | + |
| 707 | +static int rsync_xal_get(const char *fname, item_list *xalp) |
| 708 | +{ |
| 709 | + ssize_t list_len, name_len, datum_len; |
| 710 | + char *name, *ptr; |
| 711 | + |
| 712 | + /* This puts the name list into the "namebuf" buffer. */ |
| 713 | + if ((list_len = rsync_xal_list(fname)) < 0) |
| 714 | + return -1; |
| 715 | + |
| 716 | + for (name = namebuf; list_len > 0; name += name_len) { |
| 717 | + rsync_xa *rxas; |
| 718 | + |
| 719 | + name_len = strlen(name) + 1; |
| 720 | + list_len -= name_len; |
| 721 | + |
| 722 | +#ifdef HAVE_LINUX_XATTRS |
| 723 | + /* We don't send the system namespace. */ |
| 724 | + if (HAS_PREFIX(name, SYSTEM_PREFIX)) |
| 725 | + continue; |
| 726 | +#endif |
| 727 | + |
| 728 | + datum_len = sys_lgetxattr(fname, name, NULL, 0); |
| 729 | + if (datum_len < 0) { |
| 730 | + if (errno == ENOTSUP) |
| 731 | + return -1; |
| 732 | + rsyserr(FERROR, errno, |
| 733 | + "rsync_xal_get: lgetxattr(\"%s\",\"%s\",0) failed", |
| 734 | + fname, name); |
| 735 | + return -1; |
| 736 | + } |
| 737 | + ptr = new_array(char, name_len + datum_len); |
| 738 | + if (!ptr) |
| 739 | + out_of_memory("rsync_xal_get"); |
| 740 | + if (datum_len) { |
| 741 | + ssize_t len = sys_lgetxattr(fname, name, ptr, datum_len); |
| 742 | + if (len != datum_len) { |
| 743 | + if (len < 0) { |
| 744 | + rsyserr(FERROR, errno, |
| 745 | + "rsync_xal_get: lgetxattr(\"%s\",\"%s\",%ld)" |
| 746 | + " failed", fname, name, (long)datum_len); |
| 747 | + } else { |
| 748 | + rprintf(FERROR, |
| 749 | + "rsync_xal_get: lgetxattr(\"%s\",\"%s\",%ld)" |
| 750 | + " returned %ld\n", fname, name, |
| 751 | + (long)datum_len, (long)len); |
| 752 | + } |
| 753 | + free(ptr); |
| 754 | + return -1; |
| 755 | + } |
| 756 | + } |
| 757 | + rxas = EXPAND_ITEM_LIST(xalp, rsync_xa, RSYNC_XAL_INITIAL); |
| 758 | + rxas->name = ptr + datum_len; |
| 759 | + rxas->datum = ptr; |
| 760 | + rxas->name_len = name_len; |
| 761 | + rxas->datum_len = datum_len; |
| 762 | + memcpy(rxas->name, name, name_len); |
| 763 | + } |
| 764 | + if (xalp->count > 1) |
| 765 | + qsort(xalp->items, xalp->count, sizeof (rsync_xa), rsync_xal_compare_names); |
| 766 | + return 0; |
| 767 | +} |
| 768 | + |
| 769 | +/* Read the xattr(s) for this filename. */ |
| 770 | +int get_xattr(const char *fname, statx *sxp) |
| 771 | +{ |
| 772 | + sxp->xattr = new(item_list); |
| 773 | + *sxp->xattr = empty_xattr; |
| 774 | + if (rsync_xal_get(fname, sxp->xattr) < 0) { |
| 775 | + free_xattr(sxp); |
| 776 | + return -1; |
| 777 | + } |
| 778 | + return 0; |
| 779 | +} |
| 780 | + |
| 781 | +static int find_matching_xattr(item_list *xalp) |
| 782 | +{ |
| 783 | + size_t i, j; |
| 784 | + item_list *lst = rsync_xal_l.items; |
| 785 | + |
| 786 | + for (i = 0; i < rsync_xal_l.count; i++) { |
| 787 | + rsync_xa *rxas1 = lst[i].items; |
| 788 | + rsync_xa *rxas2 = xalp->items; |
| 789 | + |
| 790 | + /* Wrong number of elements? */ |
| 791 | + if (lst[i].count != xalp->count) |
| 792 | + continue; |
| 793 | + /* any elements different? */ |
| 794 | + for (j = 0; j < xalp->count; j++) { |
| 795 | + if (rxas1[j].name_len != rxas2[j].name_len |
| 796 | + || rxas1[j].datum_len != rxas2[j].datum_len |
| 797 | + || strcmp(rxas1[j].name, rxas2[j].name) |
| 798 | + || memcmp(rxas1[j].datum, rxas2[j].datum, rxas2[j].datum_len)) |
| 799 | + break; |
| 800 | + } |
| 801 | + /* no differences found. This is The One! */ |
| 802 | + if (j == xalp->count) |
| 803 | + return i; |
| 804 | + } |
| 805 | + |
| 806 | + return -1; |
| 807 | +} |
| 808 | + |
| 809 | +/* Store *xalp on the end of rsync_xal_l */ |
| 810 | +static void rsync_xal_store(item_list *xalp) |
| 811 | +{ |
| 812 | + item_list *new_lst = EXPAND_ITEM_LIST(&rsync_xal_l, item_list, RSYNC_XAL_LIST_INITIAL); |
| 813 | + /* Since the following call starts a new list, we know it will hold the |
| 814 | + * entire initial-count, not just enough space for one new item. */ |
| 815 | + *new_lst = empty_xattr; |
| 816 | + (void)EXPAND_ITEM_LIST(new_lst, rsync_xa, xalp->count); |
| 817 | + memcpy(new_lst->items, xalp->items, xalp->count * sizeof (rsync_xa)); |
| 818 | + new_lst->count = xalp->count; |
| 819 | + xalp->count = 0; |
| 820 | +} |
| 821 | + |
| 822 | +/* Send the make_xattr()-generated xattr list for this flist entry. */ |
| 823 | +void send_xattr(statx *sxp, int f) |
| 824 | +{ |
| 825 | + int ndx = find_matching_xattr(sxp->xattr); |
| 826 | + if (ndx != -1) { |
| 827 | + write_byte(f, 'x'); |
| 828 | + write_int(f, ndx); |
| 829 | + rsync_xal_free(sxp->xattr); |
| 830 | + } else { |
| 831 | + rsync_xa *rxa; |
| 832 | + int count = sxp->xattr->count; |
| 833 | + write_byte(f, 'X'); |
| 834 | + write_int(f, count); |
| 835 | + for (rxa = sxp->xattr->items; count--; rxa++) { |
| 836 | +#ifdef HAVE_LINUX_XATTRS |
| 837 | + write_int(f, rxa->name_len); |
| 838 | + write_int(f, rxa->datum_len); |
| 839 | + write_buf(f, rxa->name, rxa->name_len); |
| 840 | +#else |
| 841 | + /* We strip the rsync prefix from disguised namespaces |
| 842 | + * and put everything else in the user namespace. */ |
| 843 | + if (HAS_PREFIX(rxa->name, RSYNC_PREFIX) |
| 844 | + && rxa->name[RPRE_LEN] != '%') { |
| 845 | + write_int(f, rxa->name_len - RPRE_LEN); |
| 846 | + write_int(f, rxa->datum_len); |
| 847 | + write_buf(f, rxa->name + RPRE_LEN, rxa->name_len - RPRE_LEN); |
| 848 | + } else { |
| 849 | + write_int(f, rxa->name_len + UPRE_LEN); |
| 850 | + write_int(f, rxa->datum_len); |
| 851 | + write_buf(f, USER_PREFIX, UPRE_LEN); |
| 852 | + write_buf(f, rxa->name, rxa->name_len); |
| 853 | + } |
| 854 | +#endif |
| 855 | + write_buf(f, rxa->datum, rxa->datum_len); |
| 856 | + } |
| 857 | + rsync_xal_store(sxp->xattr); /* adds item to rsync_xal_l */ |
| 858 | + } |
| 859 | + free_xattr(sxp); |
| 860 | +} |
| 861 | + |
| 862 | +/* ------------------------------------------------------------------------- */ |
| 863 | + |
| 864 | +/* receive and build the rsync_xattr_lists */ |
| 865 | +void receive_xattr(struct file_struct *file, int f) |
| 866 | +{ |
| 867 | + static item_list temp_xattr = EMPTY_ITEM_LIST; |
| 868 | + int ndx, tag = read_byte(f); |
| 869 | + |
| 870 | + if (tag == 'X') { |
| 871 | + int i, count = read_int(f); |
| 872 | + for (i = 0; i < count; i++) { |
| 873 | + char *ptr, *name; |
| 874 | + rsync_xa *rxa; |
| 875 | + size_t name_len = read_int(f); |
| 876 | + size_t datum_len = read_int(f); |
| 877 | +#ifdef HAVE_LINUX_XATTRS |
| 878 | + size_t extra_len = 0; |
| 879 | +#else |
| 880 | + size_t extra_len = am_root ? RPRE_LEN : 0; |
| 881 | + if (datum_len + extra_len < datum_len) |
| 882 | + out_of_memory("receive_xattr"); /* overflow */ |
| 883 | +#endif |
| 884 | + if (name_len + datum_len + extra_len < name_len) |
| 885 | + out_of_memory("receive_xattr"); /* overflow */ |
| 886 | + ptr = new_array(char, name_len + datum_len + extra_len); |
| 887 | + if (!ptr) |
| 888 | + out_of_memory("receive_xattr"); |
| 889 | + name = ptr + datum_len + extra_len; |
| 890 | + read_buf(f, name, name_len); |
| 891 | + read_buf(f, ptr, datum_len); |
| 892 | +#ifdef HAVE_LINUX_XATTRS |
| 893 | + /* Non-root can only save the user namespace. */ |
| 894 | + if (!am_root && !HAS_PREFIX(name, USER_PREFIX)) { |
| 895 | + free(ptr); |
| 896 | + continue; |
| 897 | + } |
| 898 | +#else |
| 899 | + /* This OS only has a user namespace, so we either |
| 900 | + * strip the user prefix, or we put a non-user |
| 901 | + * namespace inside our rsync hierarchy. */ |
| 902 | + if (HAS_PREFIX(name, USER_PREFIX)) { |
| 903 | + name += UPRE_LEN; |
| 904 | + name_len -= UPRE_LEN; |
| 905 | + } else if (am_root) { |
| 906 | + name -= RPRE_LEN; |
| 907 | + name_len += RPRE_LEN; |
| 908 | + memcpy(name, RSYNC_PREFIX, RPRE_LEN); |
| 909 | + } else { |
| 910 | + free(ptr); |
| 911 | + continue; |
| 912 | + } |
| 913 | +#endif |
| 914 | + rxa = EXPAND_ITEM_LIST(&temp_xattr, rsync_xa, count); |
| 915 | + rxa->name = name; |
| 916 | + rxa->datum = ptr; |
| 917 | + rxa->name_len = name_len; |
| 918 | + rxa->datum_len = datum_len; |
| 919 | + } |
| 920 | + ndx = rsync_xal_l.count; /* pre-incremented count */ |
| 921 | + rsync_xal_store(&temp_xattr); /* adds item to rsync_xal_l */ |
| 922 | + } else if (tag == 'x') { |
| 923 | + ndx = read_int(f); |
| 924 | + if (ndx < 0 || (size_t)ndx >= rsync_xal_l.count) { |
| 925 | + rprintf(FERROR, "receive_xattr: xa index %d out of" |
| 926 | + " range for %s\n", ndx, f_name(file, NULL)); |
| 927 | + exit_cleanup(RERR_STREAMIO); |
| 928 | + } |
| 929 | + } else { |
| 930 | + rprintf(FERROR, "receive_xattr: unknown extended attribute" |
| 931 | + " type tag (%c) for %s\n", tag, f_name(file, NULL)); |
| 932 | + exit_cleanup(RERR_STREAMIO); |
| 933 | + } |
| 934 | + |
| 935 | + F_XATTR(file) = ndx; |
| 936 | +} |
| 937 | + |
| 938 | +/* Turn the xattr data in statx into cached xattr data, setting the index |
| 939 | + * values in the file struct. */ |
| 940 | +void cache_xattr(struct file_struct *file, statx *sxp) |
| 941 | +{ |
| 942 | + int ndx; |
| 943 | + |
| 944 | + if (!sxp->xattr) |
| 945 | + return; |
| 946 | + |
| 947 | + ndx = find_matching_xattr(sxp->xattr); |
| 948 | + if (ndx == -1) |
| 949 | + rsync_xal_store(sxp->xattr); /* adds item to rsync_xal_l */ |
| 950 | + free_xattr(sxp); |
| 951 | + |
| 952 | + F_XATTR(file) = ndx; |
| 953 | +} |
| 954 | + |
| 955 | +static int rsync_xal_set(const char *fname, item_list *xalp) |
| 956 | +{ |
| 957 | + rsync_xa *rxas = xalp->items; |
| 958 | + ssize_t list_len; |
| 959 | + size_t i; |
| 960 | + char *name; |
| 961 | + int name_len, ret = 0; |
| 962 | + |
| 963 | + /* This puts the current name list into the "namebuf" buffer. */ |
| 964 | + if ((list_len = rsync_xal_list(fname)) < 0) |
| 965 | + return -1; |
| 966 | + |
| 967 | + for (i = 0; i < xalp->count; i++) { |
| 968 | + int status = sys_lsetxattr(fname, rxas[i].name, rxas[i].datum, rxas[i].datum_len); |
| 969 | + if (status < 0) { |
| 970 | + rsyserr(FERROR, errno, |
| 971 | + "rsync_xal_set: lsetxattr(\"%s\",\"%s\") failed", |
| 972 | + fname, rxas[i].name); |
| 973 | + ret = -1; |
| 974 | + } |
| 975 | + } |
| 976 | + |
| 977 | + /* Remove any extraneous names. */ |
| 978 | + for (name = namebuf; list_len > 0; name += name_len) { |
| 979 | + name_len = strlen(name) + 1; |
| 980 | + list_len -= name_len; |
| 981 | + |
| 982 | +#ifdef HAVE_LINUX_XATTRS |
| 983 | + /* We always ignore the system namespace, and non-root |
| 984 | + * ignores everything but the user namespace. */ |
| 985 | + if (am_root ? HAS_PREFIX(name, SYSTEM_PREFIX) |
| 986 | + : !HAS_PREFIX(name, USER_PREFIX)) |
| 987 | + continue; |
| 988 | +#endif |
| 989 | + |
| 990 | + for (i = 0; i < xalp->count; i++) { |
| 991 | + if (strcmp(name, rxas[i].name) == 0) |
| 992 | + break; |
| 993 | + } |
| 994 | + if (i == xalp->count) { |
| 995 | + int status = sys_lremovexattr(fname, name); |
| 996 | + if (status < 0) { |
| 997 | + rsyserr(FERROR, errno, |
| 998 | + "rsync_xal_clear: lremovexattr(\"%s\",\"%s\") failed", |
| 999 | + fname, name); |
| 1000 | + ret = -1; |
| 1001 | + } |
| 1002 | + } |
| 1003 | + } |
| 1004 | + |
| 1005 | + return ret; |
| 1006 | +} |
| 1007 | + |
| 1008 | +/* Set extended attributes on indicated filename. */ |
| 1009 | +int set_xattr(const char *fname, const struct file_struct *file, UNUSED(statx *sxp)) |
| 1010 | +{ |
| 1011 | + int ndx; |
| 1012 | + item_list *lst = rsync_xal_l.items; |
| 1013 | + |
| 1014 | + if (dry_run) |
| 1015 | + return 1; /* FIXME: --dry-run needs to compute this value */ |
| 1016 | + |
| 1017 | + if (read_only || list_only) { |
| 1018 | + errno = EROFS; |
| 1019 | + return -1; |
| 1020 | + } |
| 1021 | + |
| 1022 | + ndx = F_XATTR(file); |
| 1023 | + return rsync_xal_set(fname, lst + ndx); /* TODO: This needs to return 1 if no xattrs changed! */ |
| 1024 | +} |
| 1025 | + |
| 1026 | +#endif /* SUPPORT_XATTRS */ |