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-rw-r--r--source3/utils/mvxattr.c227
1 files changed, 227 insertions, 0 deletions
diff --git a/source3/utils/mvxattr.c b/source3/utils/mvxattr.c
new file mode 100644
index 0000000..dd8da79
--- /dev/null
+++ b/source3/utils/mvxattr.c
@@ -0,0 +1,227 @@
+/*
+ Unix SMB/CIFS implementation.
+ xattr renaming
+ Copyright (C) Ralph Boehme 2017
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "system/filesys.h"
+#include <popt.h>
+#include <ftw.h>
+
+static struct rename_xattr_state {
+ int follow_symlink;
+ int print;
+ int force;
+ int verbose;
+ char *xattr_from;
+ char *xattr_to;
+} state;
+
+static int rename_xattr(const char *path,
+ const struct stat *sb,
+ int typeflag,
+ struct FTW *ftwbuf)
+{
+ ssize_t len;
+ int ret;
+
+ if (typeflag == FTW_SL) {
+ d_printf("Ignoring symlink %s\n", path);
+ return 0;
+ }
+
+ if (state.verbose) {
+ d_printf("%s\n", path);
+ }
+
+ len = getxattr(path, state.xattr_from, NULL, 0);
+ if (len < 0) {
+ if (errno == ENOATTR) {
+ return 0;
+ }
+ d_printf("getxattr [%s] failed [%s]\n",
+ path, strerror(errno));
+ return -1;
+ }
+
+ {
+ uint8_t buf[len];
+
+ len = getxattr(path, state.xattr_from, &buf[0], len);
+ if (len == -1) {
+ d_printf("getxattr [%s] failed [%s]\n",
+ path, strerror(errno));
+ return -1;
+ }
+
+ ret = setxattr(path, state.xattr_to, &buf[0], len, XATTR_CREATE);
+ if (ret != 0) {
+ if (errno != EEXIST) {
+ d_printf("setxattr [%s] failed [%s]\n",
+ path, strerror(errno));
+ return -1;
+ }
+ if (!state.force) {
+ d_printf("destination [%s:%s] exists, use -f to force\n",
+ path, state.xattr_to);
+ return -1;
+ }
+ ret = setxattr(path, state.xattr_to, &buf[0], len, XATTR_REPLACE);
+ if (ret != 0) {
+ d_printf("setxattr [%s:%s] failed [%s]\n",
+ path, state.xattr_to, strerror(errno));
+ return -1;
+ }
+ }
+
+ ret = removexattr(path, state.xattr_from);
+ if (ret != 0) {
+ d_printf("removexattr [%s:%s] failed [%s]\n",
+ path, state.xattr_from, strerror(errno));
+ return -1;
+ }
+
+ if (state.print) {
+ d_printf("Renamed %s to %s on %s\n",
+ state.xattr_from, state.xattr_to, path);
+ }
+ }
+
+ return 0;
+}
+
+int main(int argc, const char *argv[])
+{
+ int c;
+ const char *path = NULL;
+ poptContext pc = NULL;
+ struct poptOption long_options[] = {
+ POPT_AUTOHELP
+ {
+ .longName = "from",
+ .shortName = 's',
+ .argInfo = POPT_ARG_STRING,
+ .arg = &state.xattr_from,
+ .val = 's',
+ .descrip = "xattr source name",
+ },
+ {
+ .longName = "to",
+ .shortName = 'd',
+ .argInfo = POPT_ARG_STRING,
+ .arg = &state.xattr_to,
+ .val = 'd',
+ .descrip = "xattr destination name",
+ },
+ {
+ .longName = "follow-symlinks",
+ .shortName = 'l',
+ .argInfo = POPT_ARG_NONE,
+ .arg = &state.follow_symlink,
+ .val = 'l',
+ .descrip = "follow symlinks, the default is to "
+ "ignore them",
+ },
+ {
+ .longName = "print",
+ .shortName = 'p',
+ .argInfo = POPT_ARG_NONE,
+ .arg = &state.print,
+ .val = 'p',
+ .descrip = "print files where the xattr got "
+ "renamed",
+ },
+ {
+ .longName = "verbose",
+ .shortName = 'v',
+ .argInfo = POPT_ARG_NONE,
+ .arg = &state.verbose,
+ .val = 'v',
+ .descrip = "print files as they are checked",
+ },
+ {
+ .longName = "force",
+ .shortName = 'f',
+ .argInfo = POPT_ARG_NONE,
+ .arg = &state.force,
+ .val = 'f',
+ .descrip = "force overwriting of destination xattr",
+ },
+ POPT_TABLEEND
+ };
+ TALLOC_CTX *frame = talloc_stackframe();
+ const char *s = NULL;
+ int ret = 0;
+
+ if (getuid() != 0) {
+ d_printf("%s only works as root!\n", argv[0]);
+ ret = 1;
+ goto done;
+ }
+
+ pc = poptGetContext(NULL, argc, argv, long_options, 0);
+ poptSetOtherOptionHelp(pc, "-s STRING -d STRING PATH [PATH ...]");
+
+ while ((c = poptGetNextOpt(pc)) != -1) {
+ switch (c) {
+ case 's':
+ s = poptGetOptArg(pc);
+ state.xattr_from = talloc_strdup(frame, s);
+ if (state.xattr_from == NULL) {
+ ret = 1;
+ goto done;
+ }
+ break;
+ case 'd':
+ s = poptGetOptArg(pc);
+ state.xattr_to = talloc_strdup(frame, s);
+ if (state.xattr_to == NULL) {
+ ret = 1;
+ goto done;
+ }
+ break;
+ case POPT_ERROR_BADOPT:
+ fprintf(stderr, "\nInvalid option %s: %s\n\n",
+ poptBadOption(pc, 0), poptStrerror(c));
+ poptPrintUsage(pc, stderr, 0);
+ exit(1);
+ }
+ }
+
+ if (state.xattr_from == NULL || state.xattr_to == NULL) {
+ poptPrintUsage(pc, stderr, 0);
+ ret = 1;
+ goto done;
+ }
+
+ if (poptPeekArg(pc) == NULL) {
+ poptPrintUsage(pc, stderr, 0);
+ ret = 1;
+ goto done;
+ }
+
+ while ((path = poptGetArg(pc)) != NULL) {
+ ret = nftw(path, rename_xattr, 256,
+ state.follow_symlink ? 0 : FTW_PHYS);
+ }
+
+done:
+ poptFreeContext(pc);
+
+ TALLOC_FREE(frame);
+ return ret;
+}