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Diffstat (limited to 'usr/src/lib/libcmdutils/common/process_xattrs.c')
-rw-r--r--usr/src/lib/libcmdutils/common/process_xattrs.c334
1 files changed, 334 insertions, 0 deletions
diff --git a/usr/src/lib/libcmdutils/common/process_xattrs.c b/usr/src/lib/libcmdutils/common/process_xattrs.c
new file mode 100644
index 0000000000..5c8df946a1
--- /dev/null
+++ b/usr/src/lib/libcmdutils/common/process_xattrs.c
@@ -0,0 +1,334 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident "%Z%%M% %I% %E% SMI"
+
+#include <c_synonyms.h>
+#include "libcmdutils.h"
+
+
+/*
+ * Gets file descriptors of attribute directories for source and target
+ * attribute files
+ */
+int
+get_attrdirs(int indfd, int outdfd, char *attrfile, int *sfd, int *tfd)
+{
+ int pwdfd;
+ int fd1;
+ int fd2;
+
+ pwdfd = open(".", O_RDONLY);
+ if ((pwdfd != -1) && (fchdir(indfd) == 0)) {
+ if ((fd1 = attropen(attrfile, ".", O_RDONLY)) == -1) {
+ (void) fchdir(pwdfd);
+ (void) close(pwdfd);
+ return (1);
+ }
+ *sfd = fd1;
+ } else {
+ (void) fchdir(pwdfd);
+ (void) close(pwdfd);
+ return (1);
+ }
+ if (fchdir(outdfd) == 0) {
+ if ((fd2 = attropen(attrfile, ".", O_RDONLY)) == -1) {
+ (void) fchdir(pwdfd);
+ (void) close(pwdfd);
+ return (1);
+ }
+ *tfd = fd2;
+ } else {
+ (void) fchdir(pwdfd);
+ (void) close(pwdfd);
+ return (1);
+ }
+ (void) fchdir(pwdfd);
+ return (0);
+}
+
+/*
+ * mv_xattrs - Copies the content of the extended attribute files. Then
+ * moves the extended system attributes from the input attribute files
+ * to the target attribute files. Moves the extended system attributes
+ * from source to the target file. This function returns 0 on success
+ * and nonzero on error.
+ */
+int
+mv_xattrs(char *cmd, char *infile, char *outfile, int sattr, int silent)
+{
+ int srcfd = -1;
+ int indfd = -1;
+ int outdfd = -1;
+ int tmpfd = -1;
+ int sattrfd = -1;
+ int tattrfd = -1;
+ int asfd = -1;
+ int atfd = -1;
+ DIR *dirp = NULL;
+ struct dirent *dp = NULL;
+ char *etext = NULL;
+ struct stat st1;
+ struct stat st2;
+ nvlist_t *response = NULL;
+ nvlist_t *res = NULL;
+
+ if ((srcfd = open(infile, O_RDONLY)) == -1) {
+ etext = dgettext(TEXT_DOMAIN, "cannot open source");
+ goto error;
+ }
+ if (sattr)
+ response = sysattr_list(cmd, srcfd, infile);
+
+ if ((indfd = openat(srcfd, ".", O_RDONLY|O_XATTR)) == -1) {
+ etext = dgettext(TEXT_DOMAIN, "cannot openat source");
+ goto error;
+ }
+ if ((outdfd = attropen(outfile, ".", O_RDONLY)) == -1) {
+ etext = dgettext(TEXT_DOMAIN, "cannot attropen target");
+ goto error;
+ }
+ if ((tmpfd = dup(indfd)) == -1) {
+ etext = dgettext(TEXT_DOMAIN, "cannot dup descriptor");
+ goto error;
+
+ }
+ if ((dirp = fdopendir(tmpfd)) == NULL) {
+ etext = dgettext(TEXT_DOMAIN, "cannot access source");
+ goto error;
+ }
+ while ((dp = readdir(dirp)) != NULL) {
+ if ((dp->d_name[0] == '.' && dp->d_name[1] == '\0') ||
+ (dp->d_name[0] == '.' && dp->d_name[1] == '.' &&
+ dp->d_name[2] == '\0') ||
+ (sysattr_type(dp->d_name) == _RO_SATTR) ||
+ (sysattr_type(dp->d_name) == _RW_SATTR))
+ continue;
+
+ if ((sattrfd = openat(indfd, dp->d_name,
+ O_RDONLY)) == -1) {
+ etext = dgettext(TEXT_DOMAIN,
+ "cannot open src attribute file");
+ goto error;
+ }
+ if (fstat(sattrfd, &st1) < 0) {
+ etext = dgettext(TEXT_DOMAIN,
+ "could not stat attribute file");
+ goto error;
+ }
+ if ((tattrfd = openat(outdfd, dp->d_name,
+ O_RDWR|O_CREAT|O_TRUNC, st1.st_mode)) == -1) {
+ etext = dgettext(TEXT_DOMAIN,
+ "cannot open target attribute file");
+ goto error;
+ }
+ if (fstat(tattrfd, &st2) < 0) {
+ etext = dgettext(TEXT_DOMAIN,
+ "could not stat attribute file");
+ goto error;
+ }
+ if (writefile(sattrfd, tattrfd, infile, outfile, dp->d_name,
+ dp->d_name, &st1, &st2) != 0) {
+ etext = dgettext(TEXT_DOMAIN,
+ "failed to copy extended attribute "
+ "from source to target");
+ goto error;
+ }
+
+ errno = 0;
+ if (sattr) {
+ /*
+ * Gets non default extended system attributes from
+ * source to copy to target.
+ */
+ if (dp->d_name != NULL)
+ res = sysattr_list(cmd, sattrfd, dp->d_name);
+
+ if (res != NULL &&
+ get_attrdirs(indfd, outdfd, dp->d_name, &asfd,
+ &atfd) != 0) {
+ etext = dgettext(TEXT_DOMAIN,
+ "Failed to open attribute files");
+ goto error;
+ }
+ /*
+ * Copy extended system attribute from source
+ * attribute file to target attribute file
+ */
+ if (res != NULL &&
+ (renameat(asfd, VIEW_READWRITE, atfd,
+ VIEW_READWRITE) != 0)) {
+ if (errno == EPERM)
+ etext = dgettext(TEXT_DOMAIN,
+ "Permission denied -"
+ "failed to move system attribute");
+ else
+ etext = dgettext(TEXT_DOMAIN,
+ "failed to move extended "
+ "system attribute");
+ goto error;
+ }
+ }
+ if (sattrfd != -1)
+ (void) close(sattrfd);
+ if (tattrfd != -1)
+ (void) close(tattrfd);
+ if (asfd != -1)
+ (void) close(asfd);
+ if (atfd != -1)
+ (void) close(atfd);
+ if (res != NULL) {
+ nvlist_free(res);
+ res = NULL;
+ }
+ }
+ errno = 0;
+ /* Copy extended system attribute from source to target */
+
+ if (response != NULL) {
+ if (renameat(indfd, VIEW_READWRITE, outdfd,
+ VIEW_READWRITE) == 0)
+ goto done;
+
+ if (errno == EPERM)
+ etext = dgettext(TEXT_DOMAIN, "Permission denied");
+ else
+ etext = dgettext(TEXT_DOMAIN,
+ "failed to move system attribute");
+ }
+error:
+ if (res != NULL)
+ nvlist_free(res);
+ if (silent == 0 && etext != NULL) {
+ if (!sattr)
+ (void) fprintf(stderr, dgettext(TEXT_DOMAIN,
+ "%s: %s: cannot move extended attributes, "),
+ cmd, infile);
+ else
+ (void) fprintf(stderr, dgettext(TEXT_DOMAIN,
+ "%s: %s: cannot move extended system "
+ "attributes, "), cmd, infile);
+ perror(etext);
+ }
+done:
+ if (dirp)
+ (void) closedir(dirp);
+ if (sattrfd != -1)
+ (void) close(sattrfd);
+ if (tattrfd != -1)
+ (void) close(tattrfd);
+ if (asfd != -1)
+ (void) close(asfd);
+ if (atfd != -1)
+ (void) close(atfd);
+ if (indfd != -1)
+ (void) close(indfd);
+ if (outdfd != -1)
+ (void) close(outdfd);
+ if (response != NULL)
+ nvlist_free(response);
+ if (etext != NULL)
+ return (1);
+ else
+ return (0);
+}
+
+/*
+ * The function returns non default extended system attribute list
+ * associated with 'fname' and returns NULL when an error has occured
+ * or when only extended system attributes other than archive,
+ * av_modified or crtime are set.
+ *
+ * The function returns system attribute list for the following cases:
+ *
+ * - any extended system attribute other than the default attributes
+ * ('archive', 'av_modified' and 'crtime') is set
+ * - nvlist has NULL name string
+ * - nvpair has data type of 'nvlist'
+ * - default data type.
+ */
+
+nvlist_t *
+sysattr_list(char *cmd, int fd, char *fname)
+{
+ boolean_t value;
+ data_type_t type;
+ nvlist_t *response;
+ nvpair_t *pair;
+ f_attr_t fattr;
+ char *name;
+
+ if (nvlist_alloc(&response, NV_UNIQUE_NAME, 0) != 0) {
+ (void) fprintf(stderr, dgettext(TEXT_DOMAIN,
+ "%s: %s: nvlist_alloc failed\n"),
+ cmd, fname);
+ return (NULL);
+ }
+ if (fgetattr(fd, XATTR_VIEW_READWRITE, &response) != 0) {
+ (void) fprintf(stderr, dgettext(TEXT_DOMAIN,
+ "%s: %s: fgetattr failed\n"),
+ cmd, fname);
+ nvlist_free(response);
+ return (NULL);
+ }
+ pair = NULL;
+ while ((pair = nvlist_next_nvpair(response, pair)) != NULL) {
+
+ name = nvpair_name(pair);
+
+ if (name != NULL)
+ fattr = name_to_attr(name);
+ else
+ return (response);
+
+ type = nvpair_type(pair);
+ switch (type) {
+ case DATA_TYPE_BOOLEAN_VALUE:
+ if (nvpair_value_boolean_value(pair,
+ &value) != 0) {
+ (void) fprintf(stderr,
+ dgettext(TEXT_DOMAIN, "%s "
+ "nvpair_value_boolean_value "
+ "failed\n"), cmd);
+ continue;
+ }
+ if (value && fattr != F_ARCHIVE &&
+ fattr != F_AV_MODIFIED)
+ return (response);
+ break;
+ case DATA_TYPE_UINT64_ARRAY:
+ if (fattr != F_CRTIME)
+ return (response);
+ break;
+ case DATA_TYPE_NVLIST:
+ default:
+ return (response);
+ break;
+ }
+ }
+ if (response != NULL)
+ nvlist_free(response);
+ return (NULL);
+}
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