/**
* Functions to handle ACLs for bacula.
*
+ * Currently we support the following OSes:
+ * - AIX (pre-5.3 and post 5.3 acls, acl_get and aclx_get interface)
+ * - Darwin
+ * - FreeBSD (POSIX and NFSv4/ZFS acls)
+ * - HPUX
+ * - IRIX
+ * - Linux
+ * - Solaris (POSIX and NFSv4/ZFS acls)
+ * - Tru64
+ *
+ * Next to OS specific acls we support AFS acls using the pioctl interface.
+ *
* We handle two different types of ACLs: access and default ACLS.
* On most systems that support default ACLs they only apply to directories.
*
#if defined(HAVE_EXTENDED_ACL)
+#include <sys/access.h>
#include <sys/acl.h>
+static bool acl_is_trivial(struct acl *acl)
+{
+ return (acl_last(acl) != acl->acl_ext ? false : true);
+}
+
+static bool acl_nfs4_is_trivial(nfs4_acl_int_t *acl)
+{
+ return (acl->aclEntryN > 0 ? false : true);
+}
+
/**
* Define the supported ACL streams for this OS
*/
-static int os_access_acl_streams[1] = { STREAM_ACL_AIX_TEXT, STREAM_ACL_AIX_AIXC, STREAM_ACL_AIX_NFS4 };
+static int os_access_acl_streams[3] = { STREAM_ACL_AIX_TEXT, STREAM_ACL_AIX_AIXC, STREAM_ACL_AIX_NFS4 };
static int os_default_acl_streams[1] = { -1 };
static bacl_exit_code aix_build_acl_streams(JCR *jcr, FF_PKT *ff_pkt)
{
- return bacl_exit_error;
+ berrno be;
+ mode_t mode;
+ acl_type_t type;
+ size_t aclsize, acltxtsize;
+ bacl_exit_code retval = bacl_exit_error;
+ POOLMEM *aclbuf = get_pool_memory(PM_MESSAGE);
+
+ /**
+ * First see how big the buffers should be.
+ */
+ type.u64 = ACL_ANY;
+ if (aclx_get(jcr->last_fname, GET_ACLINFO_ONLY, &type, NULL, &aclsize, NULL) < 0) {
+ switch (errno) {
+ case ENOENT:
+ retval = bacl_exit_ok;
+ goto bail_out;
+ default:
+ Mmsg2(jcr->errmsg, _("aclx_get error on file \"%s\": ERR=%s\n"),
+ jcr->last_fname, be.bstrerror());
+ Dmsg2(100, "aclx_get error file=%s ERR=%s\n",
+ jcr->last_fname, be.bstrerror());
+ goto bail_out;
+ }
+ }
+
+ /**
+ * Make sure the buffers are big enough.
+ */
+ aclbuf = check_pool_memory_size(aclbuf, aclsize + 1);
+
+ /**
+ * Retrieve the ACL info.
+ */
+ if (aclx_get(jcr->last_fname, 0, &type, aclbuf, &aclsize, &mode) < 0) {
+ switch (errno) {
+ case ENOENT:
+ retval = bacl_exit_ok;
+ goto bail_out;
+ default:
+ Mmsg2(jcr->errmsg, _("aclx_get error on file \"%s\": ERR=%s\n"),
+ jcr->last_fname, be.bstrerror());
+ Dmsg2(100, "aclx_get error file=%s ERR=%s\n",
+ jcr->last_fname, be.bstrerror());
+ goto bail_out;
+ }
+ }
+
+ /**
+ * See if the acl is non trivial.
+ */
+ switch (type.u64) {
+ case ACL_AIXC:
+ if (acl_is_trivial((struct acl *)aclbuf)) {
+ retval = bacl_exit_ok;
+ goto bail_out;
+ }
+ break;
+ case ACL_NFS4:
+ if (acl_nfs4_is_trivial((nfs4_acl_int_t *)aclbuf)) {
+ retval = bacl_exit_ok;
+ goto bail_out;
+ }
+ break;
+ default:
+ Mmsg2(jcr->errmsg, _("Unknown acl type encountered on file \"%s\": %ld\n"),
+ jcr->last_fname, type.u64);
+ Dmsg2(100, "Unknown acl type encountered on file \"%s\": %ld\n",
+ jcr->last_fname, type.u64);
+ goto bail_out;
+ }
+
+ /**
+ * We have a non-trivial acl lets convert it into some ASCII form.
+ */
+ acltxtsize = sizeof_pool_memory(jcr->acl_data->content);
+ if (aclx_printStr(jcr->acl_data->content, &acltxtsize, aclbuf,
+ aclsize, type, jcr->last_fname, 0) < 0) {
+ switch (errno) {
+ case ENOSPC:
+ /**
+ * Our buffer is not big enough, acltxtsize should be updated with the value
+ * the aclx_printStr really need. So we increase the buffer and try again.
+ */
+ jcr->acl_data->content = check_pool_memory_size(jcr->acl_data->content, acltxtsize + 1);
+ if (aclx_printStr(jcr->acl_data->content, &acltxtsize, aclbuf,
+ aclsize, type, jcr->last_fname, 0) < 0) {
+ Mmsg1(jcr->errmsg, _("Failed to convert acl into text on file \"%s\"\n"),
+ jcr->last_fname);
+ Dmsg2(100, "Failed to convert acl into text on file \"%s\": %ld\n",
+ jcr->last_fname, type.u64);
+ goto bail_out;
+ }
+ break;
+ default:
+ Mmsg1(jcr->errmsg, _("Failed to convert acl into text on file \"%s\"\n"),
+ jcr->last_fname);
+ Dmsg2(100, "Failed to convert acl into text on file \"%s\": %ld\n",
+ jcr->last_fname, type.u64);
+ goto bail_out;
+ }
+ }
+
+ jcr->acl_data->content_length = strlen(jcr->acl_data->content) + 1;
+ switch (type.u64) {
+ case ACL_AIXC:
+ retval = send_acl_stream(jcr, STREAM_ACL_AIX_AIXC);
+ case ACL_NFS4:
+ retval = send_acl_stream(jcr, STREAM_ACL_AIX_NFS4);
+ }
+
+bail_out:
+ free_pool_memory(aclbuf);
+
+ return retval;
}
static bacl_exit_code aix_parse_acl_streams(JCR *jcr, int stream)
{
+ int cnt;
+ berrno be;
+ acl_type_t type;
+ size_t aclsize;
+ bacl_exit_code retval = bacl_exit_error;
+ POOLMEM *aclbuf = get_pool_memory(PM_MESSAGE);
+
switch (stream) {
case STREAM_ACL_AIX_TEXT:
+ /**
+ * Handle the old stream using the old system call for now.
+ */
+ if (acl_put(jcr->last_fname, jcr->acl_data->content, 0) != 0) {
+ retval = bacl_exit_error;
+ goto bail_out;
+ }
+ retval = bacl_exit_ok;
+ goto bail_out;
case STREAM_ACL_AIX_AIXC:
+ type.u64 = ACL_AIXC;
break;
case STREAM_ACL_AIX_NFS4:
+ type.u64 = ACL_NFS4;
break;
+ default:
+ goto bail_out;
+ } /* end switch (stream) */
+
+ /**
+ * Set the acl buffer to an initial size. For now we set it
+ * to the same size as the ASCII representation.
+ */
+ aclbuf = check_pool_memory_size(aclbuf, jcr->acl_data->content_length);
+ aclsize = jcr->acl_data->content_length;
+ if (aclx_scanStr(jcr->acl_data->content, aclbuf, &aclsize, type) < 0) {
+ switch (errno) {
+ case ENOSPC:
+ /**
+ * The buffer isn't big enough. The man page doesn't say that aclsize
+ * is updated to the needed size as what is done with aclx_printStr.
+ * So for now we try to increase the buffer a maximum of 3 times
+ * and retry the conversion.
+ */
+ for (cnt = 0; cnt < 3; cnt++) {
+ aclsize = 2 * aclsize;
+ aclbuf = check_pool_memory_size(aclbuf, aclsize);
+
+ if (aclx_scanStr(jcr->acl_data->content, aclbuf, &aclsize, type) == 0) {
+ break;
+ }
+
+ /**
+ * See why we failed this time, ENOSPC retry if max retries not met,
+ * otherwise abort.
+ */
+ switch (errno) {
+ case ENOSPC:
+ if (cnt < 3) {
+ continue;
+ }
+ /* FALL THROUGH */
+ default:
+ Mmsg2(jcr->errmsg, _("aclx_scanStr error on file \"%s\": ERR=%s\n"),
+ jcr->last_fname, be.bstrerror());
+ Dmsg2(100, "aclx_scanStr error file=%s ERR=%s\n",
+ jcr->last_fname, be.bstrerror());
+ goto bail_out;
+ }
+ }
+ break;
+ default:
+ Mmsg2(jcr->errmsg, _("aclx_scanStr error on file \"%s\": ERR=%s\n"),
+ jcr->last_fname, be.bstrerror());
+ Dmsg2(100, "aclx_scanStr error file=%s ERR=%s\n",
+ jcr->last_fname, be.bstrerror());
+ }
}
- return bacl_exit_error;
+ if (aclx_put(jcr->last_fname, SET_ACL, type, aclbuf, aclsize, 0) < 0) {
+ switch (errno) {
+ case ENOENT:
+ retval = bacl_exit_ok;
+ goto bail_out;
+ default:
+ Mmsg2(jcr->errmsg, _("aclx_put error on file \"%s\": ERR=%s\n"),
+ jcr->last_fname, be.bstrerror());
+ Dmsg2(100, "aclx_put error file=%s ERR=%s\n",
+ jcr->last_fname, be.bstrerror());
+ goto bail_out;
+ }
+ }
+
+ retval = bacl_exit_ok;
+
+bail_out:
+ free_pool_memory(aclbuf);
+
+ return retval;
}
#else /* HAVE_EXTENDED_ACL */
#endif
/**
- * In Linux we can get numeric and/or shorted ACLs
+ * On Linux we can get numeric and/or shorted ACLs
*/
#if defined(HAVE_LINUX_OS)
#if defined(BACL_WANT_SHORT_ACLS) && defined(BACL_WANT_NUMERIC_IDS)
#endif
#endif
+/**
+ * On FreeBSD we can get numeric ACLs
+ */
+#if defined(HAVE_FREEBSD_OS)
+#if defined(BACL_WANT_NUMERIC_IDS)
+#define BACL_ALTERNATE_TEXT ACL_TEXT_NUMERIC_IDS
+#endif
+#ifdef BACL_ALTERNATE_TEXT
+#define acl_to_text(acl,len) (acl_to_text_np((acl), (len), BACL_ALTERNATE_TEXT))
+#endif
+#endif
+
/**
* Some generic functions used by multiple OSes.
*/
case BACL_TYPE_DEFAULT:
ostype = ACL_TYPE_DEFAULT;
break;
-
+#ifdef ACL_TYPE_NFS4
+ /**
+ * FreeBSD has an additional acl type named ACL_TYPE_NFS4.
+ */
+ case BACL_TYPE_NFS4:
+ ostype = ACL_TYPE_NFS4;
+ break;
+#endif
#ifdef ACL_TYPE_DEFAULT_DIR
case BACL_TYPE_DEFAULT_DIR:
/**
- * OSF1 has an additional acl type named ACL_TYPE_DEFAULT_DIR.
+ * TRU64 has an additional acl type named ACL_TYPE_DEFAULT_DIR.
*/
ostype = ACL_TYPE_DEFAULT_DIR;
break;
}
#endif
-#if !defined(HAVE_DARWIN_OS)
/**
* Make sure this is not just a trivial ACL.
*/
+#if !defined(HAVE_DARWIN_OS)
if (acltype == BACL_TYPE_ACCESS && acl_is_trivial(acl)) {
/**
* The ACLs simply reflect the (already known) standard permissions
return bacl_exit_ok;
}
#endif
+#if defined(HAVE_FREEBSD_OS) && defined(_PC_ACL_NFS4)
+ if (acltype == BACL_TYPE_NFS4) {
+ int trivial;
+ if (acl_is_trivial_np(acl, &trivial) == 0) {
+ if (trivial == 1) {
+ /**
+ * The ACLs simply reflect the (already known) standard permissions
+ * So we don't send an ACL stream to the SD.
+ */
+ pm_strcpy(jcr->acl_data->content, "");
+ jcr->acl_data->content_length = 0;
+ acl_free(acl);
+ return bacl_exit_ok;
+ }
+ }
+ }
+#endif
if ((acl_text = acl_to_text(acl, NULL)) != NULL) {
jcr->acl_data->content_length = pm_strcpy(jcr->acl_data->content, acl_text);
static bacl_exit_code (*os_build_acl_streams)(JCR *jcr, FF_PKT *ff_pkt) = darwin_build_acl_streams;
static bacl_exit_code (*os_parse_acl_streams)(JCR *jcr, int stream) = darwin_parse_acl_streams;
-#elif defined(HAVE_FREEBSD_OS) || \
- defined(HAVE_IRIX_OS) || \
- defined(HAVE_LINUX_OS)
-
+#elif defined(HAVE_FREEBSD_OS)
/**
* Define the supported ACL streams for these OSes
*/
-#if defined(HAVE_FREEBSD_OS)
-static int os_access_acl_streams[1] = { STREAM_ACL_FREEBSD_ACCESS_ACL };
+static int os_access_acl_streams[2] = { STREAM_ACL_FREEBSD_ACCESS_ACL, STREAM_ACL_FREEBSD_NFS4_ACL };
static int os_default_acl_streams[1] = { STREAM_ACL_FREEBSD_DEFAULT_ACL };
-#elif defined(HAVE_IRIX_OS)
+
+static bacl_exit_code freebsd_build_acl_streams(JCR *jcr, FF_PKT *ff_pkt)
+{
+ int acl_enabled = 0;
+ bacl_type acltype = BACL_TYPE_NONE;
+ berrno be;
+
+#if defined(_PC_ACL_NFS4)
+ /**
+ * See if filesystem supports NFS4 acls.
+ */
+ acl_enabled = pathconf(jcr->last_fname, _PC_ACL_NFS4);
+ switch (acl_enabled) {
+ case -1:
+ switch (errno) {
+ case ENOENT:
+ return bacl_exit_ok;
+ default:
+ Mmsg2(jcr->errmsg, _("pathconf error on file \"%s\": ERR=%s\n"),
+ jcr->last_fname, be.bstrerror());
+ Dmsg2(100, "pathconf error file=%s ERR=%s\n",
+ jcr->last_fname, be.bstrerror());
+ return bacl_exit_error;
+ }
+ case 0:
+ break;
+ default:
+ acltype = BACL_TYPE_NFS4;
+ break;
+ }
+#endif
+
+ if (acl_enabled == 0) {
+ /**
+ * See if filesystem supports POSIX acls.
+ */
+ acl_enabled = pathconf(jcr->last_fname, _PC_ACL_EXTENDED);
+ switch (acl_enabled) {
+ case -1:
+ switch (errno) {
+ case ENOENT:
+ return bacl_exit_ok;
+ default:
+ Mmsg2(jcr->errmsg, _("pathconf error on file \"%s\": ERR=%s\n"),
+ jcr->last_fname, be.bstrerror());
+ Dmsg2(100, "pathconf error file=%s ERR=%s\n",
+ jcr->last_fname, be.bstrerror());
+ return bacl_exit_error;
+ }
+ case 0:
+ break;
+ default:
+ acltype = BACL_TYPE_ACCESS;
+ break;
+ }
+ }
+
+ /**
+ * If the filesystem reports it doesn't support ACLs we clear the
+ * BACL_FLAG_SAVE_NATIVE flag so we skip ACL saves on all other files
+ * on the same filesystem. The BACL_FLAG_SAVE_NATIVE flag gets set again
+ * when we change from one filesystem to an other.
+ */
+ if (acl_enabled == 0) {
+ jcr->acl_data->flags &= ~BACL_FLAG_SAVE_NATIVE;
+ pm_strcpy(jcr->acl_data->content, "");
+ jcr->acl_data->content_length = 0;
+ return bacl_exit_ok;
+ }
+
+ /**
+ * Based on the supported ACLs retrieve and store them.
+ */
+ switch (acltype) {
+ case BACL_TYPE_NFS4:
+ /**
+ * Read NFS4 ACLs for files, dirs and links
+ */
+ if (generic_get_acl_from_os(jcr, BACL_TYPE_NFS4) == bacl_exit_fatal)
+ return bacl_exit_fatal;
+
+ if (jcr->acl_data->content_length > 0) {
+ if (send_acl_stream(jcr, STREAM_ACL_FREEBSD_NFS4_ACL) == bacl_exit_fatal)
+ return bacl_exit_fatal;
+ }
+ break;
+ case BACL_TYPE_ACCESS:
+ /**
+ * Read access ACLs for files, dirs and links
+ */
+ if (generic_get_acl_from_os(jcr, BACL_TYPE_ACCESS) == bacl_exit_fatal)
+ return bacl_exit_fatal;
+
+ if (jcr->acl_data->content_length > 0) {
+ if (send_acl_stream(jcr, STREAM_ACL_FREEBSD_ACCESS_ACL) == bacl_exit_fatal)
+ return bacl_exit_fatal;
+ }
+
+ /**
+ * Directories can have default ACLs too
+ */
+ if (ff_pkt->type == FT_DIREND) {
+ if (generic_get_acl_from_os(jcr, BACL_TYPE_DEFAULT) == bacl_exit_fatal)
+ return bacl_exit_fatal;
+ if (jcr->acl_data->content_length > 0) {
+ if (send_acl_stream(jcr, STREAM_ACL_FREEBSD_DEFAULT_ACL) == bacl_exit_fatal)
+ return bacl_exit_fatal;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+
+ return bacl_exit_ok;
+}
+
+static bacl_exit_code freebsd_parse_acl_streams(JCR *jcr, int stream)
+{
+ int acl_enabled = 0;
+ char *acl_type_name;
+ berrno be;
+
+ /**
+ * First make sure the filesystem supports acls.
+ */
+ switch (stream) {
+ case STREAM_UNIX_ACCESS_ACL:
+ case STREAM_ACL_FREEBSD_ACCESS_ACL:
+ case STREAM_UNIX_DEFAULT_ACL:
+ case STREAM_ACL_FREEBSD_DEFAULT_ACL:
+ acl_enabled = pathconf(jcr->last_fname, _PC_ACL_EXTENDED);
+ acl_type_name = "POSIX";
+ break;
+ case STREAM_ACL_FREEBSD_NFS4_ACL:
+#if defined(_PC_ACL_NFS4)
+ acl_enabled = pathconf(jcr->last_fname, _PC_ACL_NFS4);
+#endif
+ acl_type_name = "NFS4";
+ break;
+ default:
+ acl_type_name = "unknown";
+ break;
+ }
+
+ switch (acl_enabled) {
+ case -1:
+ switch (errno) {
+ case ENOENT:
+ return bacl_exit_ok;
+ default:
+ Mmsg2(jcr->errmsg, _("pathconf error on file \"%s\": ERR=%s\n"),
+ jcr->last_fname, be.bstrerror());
+ Dmsg3(100, "pathconf error acl=%s file=%s ERR=%s\n",
+ jcr->acl_data->content, jcr->last_fname, be.bstrerror());
+ return bacl_exit_error;
+ }
+ case 0:
+ Mmsg2(jcr->errmsg, _("Trying to restore acl on file \"%s\" on filesystem without %s acl support\n"),
+ jcr->last_fname, acl_type_name);
+ return bacl_exit_error;
+ default:
+ break;
+ }
+
+ /**
+ * Restore the ACLs.
+ */
+ switch (stream) {
+ case STREAM_UNIX_ACCESS_ACL:
+ case STREAM_ACL_FREEBSD_ACCESS_ACL:
+ return generic_set_acl_on_os(jcr, BACL_TYPE_ACCESS);
+ case STREAM_UNIX_DEFAULT_ACL:
+ case STREAM_ACL_FREEBSD_DEFAULT_ACL:
+ return generic_set_acl_on_os(jcr, BACL_TYPE_DEFAULT);
+ case STREAM_ACL_FREEBSD_NFS4_ACL:
+ return generic_set_acl_on_os(jcr, BACL_TYPE_NFS4);
+ default:
+ break;
+ }
+ return bacl_exit_error;
+}
+
+/**
+ * For this OSes setup the build and parse function pointer to the OS specific functions.
+ */
+static bacl_exit_code (*os_build_acl_streams)(JCR *jcr, FF_PKT *ff_pkt) = freebsd_build_acl_streams;
+static bacl_exit_code (*os_parse_acl_streams)(JCR *jcr, int stream) = freebsd_parse_acl_streams;
+
+#elif defined(HAVE_IRIX_OS) || \
+ defined(HAVE_LINUX_OS)
+/**
+ * Define the supported ACL streams for these OSes
+ */
+#if defined(HAVE_IRIX_OS)
static int os_access_acl_streams[1] = { STREAM_ACL_IRIX_ACCESS_ACL };
static int os_default_acl_streams[1] = { STREAM_ACL_IRIX_DEFAULT_ACL };
#elif defined(HAVE_LINUX_OS)
}
default:
/**
- * On a filesystem with ACL support make sure this particilar ACL type can be restored.
+ * On a filesystem with ACL support make sure this particular ACL type can be restored.
*/
switch (stream) {
case STREAM_ACL_SOLARIS_ACLENT:
projects / bacula / bacula / blobdiff