ssize_t rep_fgetxattr (int filedes, const char *name, void *value, size_t size)
{
#if defined(HAVE_FGETXATTR)
#ifndef XATTR_ADDITIONAL_OPTIONS
return fgetxattr(filedes, name, value, size);
#else
/* So that we do not recursivly call this function */
#undef fgetxattr
int options = 0;
return fgetxattr(filedes, name, value, size, 0, options);
#endif
#elif defined(HAVE_FGETEA)
return fgetea(filedes, name, value, size);
#elif defined(HAVE_EXTATTR_GET_FD)
char *s;
ssize_t retval;
int attrnamespace = (strncmp(name, "system", 6) == 0) ?
EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
const char *attrname = ((s=strchr(name, '.')) == NULL) ? name : s + 1;
if((retval=extattr_get_fd(filedes, attrnamespace, attrname, NULL, 0)) >= 0) {
if (size == 0) {
return retval;
} else if (retval > size) {
errno = ERANGE;
return -1;
}
if((retval=extattr_get_fd(filedes, attrnamespace, attrname, value, size)) >= 0)
return retval;
}
return -1;
#elif defined(HAVE_ATTR_GETF)
int retval, flags = 0;
int valuelength = (int)size;
char *attrname = strchr(name,'.') + 1;
if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
retval = attr_getf(filedes, attrname, (char *)value, &valuelength, flags);
if (size == 0 && retval == -1 && errno == E2BIG) {
return valuelength;
}
return retval ? retval : valuelength;
#elif defined(HAVE_ATTROPEN)
ssize_t ret = -1;
int attrfd = solaris_openat(filedes, name, O_RDONLY|O_XATTR, 0);
if (attrfd >= 0) {
ret = solaris_read_xattr(attrfd, value, size);
close(attrfd);
}
return ret;
#else
errno = ENOSYS;
return -1;
#endif
}
ssize_t sys_fgetxattr (int filedes, const char *uname, void *value, size_t size)
{
const char *name = prefix(uname);
#if defined(HAVE_FGETXATTR)
#ifndef XATTR_ADD_OPT
return fgetxattr(filedes, name, value, size);
#else
int options = 0;
return fgetxattr(filedes, name, value, size, 0, options);
#endif
#elif defined(HAVE_FGETEA)
return fgetea(filedes, name, value, size);
#elif defined(HAVE_EXTATTR_GET_FD)
char *s;
ssize_t retval;
int attrnamespace = (strncmp(name, "system", 6) == 0) ?
EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
const char *attrname = ((s=strchr(name, '.')) == NULL) ? name : s + 1;
if((retval=extattr_get_fd(filedes, attrnamespace, attrname, NULL, 0)) >= 0) {
if(retval > size) {
errno = ERANGE;
return -1;
}
if((retval=extattr_get_fd(filedes, attrnamespace, attrname, value, size)) >= 0)
return retval;
}
LOG(log_debug, logtype_default, "sys_fgetxattr: extattr_get_fd(): %s", strerror(errno));
return -1;
#elif defined(HAVE_ATTR_GETF)
int retval, flags = 0;
int valuelength = (int)size;
char *attrname = strchr(name,'.') + 1;
if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
retval = attr_getf(filedes, attrname, (char *)value, &valuelength, flags);
return retval ? retval : valuelength;
#elif defined(HAVE_ATTROPEN)
ssize_t ret = -1;
int attrfd = solaris_openat(filedes, name, O_RDONLY|O_XATTR, 0);
if (attrfd >= 0) {
ret = solaris_read_xattr(attrfd, value, size);
close(attrfd);
}
return ret;
#else
errno = ENOSYS;
return -1;
#endif
}
ssize_t sys_fgetxattr (int filedes, const char *name, void *value, size_t size)
{
#if defined(HAVE_FGETXATTR)
return fgetxattr(filedes, name, value, size);
#elif defined(HAVE_ATTR_GETF)
int retval, flags = 0;
int valuelength = (int)size;
char *attrname = strchr(name,'.') +1;
if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;
retval = attr_getf(filedes, attrname, (char *)value, &valuelength, flags);
return retval ? retval : valuelength;
#else
errno = ENOSYS;
return -1;
#endif
}
extern int
HsmInitFileContext(
hsm_f_ctxt_t *contextp,
const xfs_bstat_t *statp)
{
dmf_f_ctxt_t *dmf_f_ctxtp = (dmf_f_ctxt_t *)contextp;
XFSattrvalue1_t *dmfattrp;
int attrlen;
void *hanp;
size_t hlen;
dm_ino_t ino;
dm_igen_t igen;
int fd;
int error;
dmf_f_ctxtp->candidate = 0; /* assume file will NOT be of interest */
/* Try and rule out a dualstate inode by doing some quick tests. */
if ((statp->bs_mode & S_IFMT) != S_IFREG) {
return 0; /* not a regular file */
}
if ((statp->bs_xflags & XFS_XFLAG_HASATTR) == 0) {
return 0; /* no DMF attribute exists */
}
if ((statp->bs_dmevmask & DUALSTATE_BITS) != DUALSTATE_BITS) {
return 0; /* non-dualstate managed region bits */
}
/* We have a likely candidate, so we have to pay the price and look
for the DMF attribute. (It could be in a disk block separate from
the inode.)
*/
ino = (dm_ino_t)statp->bs_ino;
igen = (dm_igen_t)statp->bs_gen;
if (dm_make_handle(&dmf_f_ctxtp->fsys.fsid, &ino, &igen, &hanp, &hlen) != 0) {
return 0; /* can't make a proper handle */
}
/* The following code should eventually be replaced with the
attr_multif-by-handle call when it is available.
*/
fd = open_by_handle(hanp, hlen, O_RDONLY);
dm_handle_free(hanp, hlen);
if (fd < 0) {
return 0;
}
attrlen = sizeof(dmf_f_ctxtp->attrval);
error = attr_getf(fd, DMF_ATTR_NAME, dmf_f_ctxtp->attrval,
&attrlen, ATTR_ROOT);
(void)close(fd);
if (error) {
return 0;
}
if (attrlen != DMF_ATTR_LEN) {
return 0; /* not the right length to be the attribute */
}
dmfattrp = (XFSattrvalue1_t *)dmf_f_ctxtp->attrval;
if (dmfattrp->version != XFS_ATTR_VERSION_1) {
return 0; /* we don't support this version */
}
if (dmfattrp->state[0] != '\0') {
return 0; /* should be zero */
}
if (dmfattrp->state[1] != DMF_ST_DUALSTATE &&
dmfattrp->state[1] != DMF_ST_UNMIGRATING) {
return 0;
}
/* We have a DMF dual state file. */
dmf_f_ctxtp->candidate = 1;
dmf_f_ctxtp->filesize = BTOBB(statp->bs_size);
return 0;
}