Parent pointer userspace support. Adds in libhandle code and xfs_io parent command...

[thirdparty/xfsprogs-dev.git] / libhandle / handle.c

diff --git a/libhandle/handle.c b/libhandle/handle.c
index dbd40f18280d54b5d182f8e444cc2ea4dd0b70bc..4bd052b23cf087cbce02108494e64b168da885d3 100644 (file)
--- a/libhandle/handle.c
+++ b/libhandle/handle.c
@@ -18,6 +18,7 @@
 
 #include <xfs/xfs.h>
 #include <xfs/handle.h>
+#include <xfs/parent.h>
 
 /* just pick a value we know is more than big enough */
 #define        MAXHANSIZ       64
@@ -342,7 +343,7 @@ attr_list_by_handle(
        int             flags,
        struct attrlist_cursor *cursor)
 {
-       int             fd;
+       int             error, fd;
        char            *path;
        xfs_fsop_attrlist_handlereq_t alhreq;
 
@@ -362,7 +363,93 @@ attr_list_by_handle(
        alhreq.buflen = bufsize;
        alhreq.buffer = buf;
 
-       return xfsctl(path, fd, XFS_IOC_ATTRLIST_BY_HANDLE, &alhreq);
+       error = xfsctl(path, fd, XFS_IOC_ATTRLIST_BY_HANDLE, &alhreq);
+
+       memcpy(cursor, &alhreq.pos, sizeof(alhreq.pos));
+       return error;
+}
+
+int
+getparents_by_handle(
+       void            *hanp,
+       size_t          hlen,
+       parent_t        *buf,
+       size_t          bufsiz,
+       parent_cursor_t *cursor,
+       unsigned int    *count,
+       unsigned int    *more)
+{
+#if !defined(__sgi__)
+       errno = EOPNOTSUPP;
+       return -1;
+#else
+
+       int             error, fd;
+       char            *path;
+       xfs_fsop_getparents_handlereq_t gphreq;
+
+       if ((fd = handle_to_fsfd(hanp, &path)) < 0)
+               return -1;
+
+       gphreq.hreq.fd       = 0;
+       gphreq.hreq.path     = NULL;
+       gphreq.hreq.oflags   = O_LARGEFILE;
+       gphreq.hreq.ihandle  = hanp;
+       gphreq.hreq.ihandlen = hlen;
+       gphreq.hreq.ohandle  = NULL;
+       gphreq.hreq.ohandlen = NULL;
+       memcpy(&gphreq.pos, cursor, sizeof(gphreq.pos));
+       gphreq.buflen = bufsiz;
+       gphreq.buffer = buf;
+       gphreq.ocount = count;
+       gphreq.omore = more;
+
+       error = xfsctl(path, fd, XFS_IOC_GETPARENTS, &gphreq);
+
+       memcpy(cursor, &gphreq.pos, sizeof(gphreq.pos));
+       return error;
+#endif
+}
+
+int
+getparentpaths_by_handle(
+       void            *hanp,
+       size_t          hlen,
+       parent_t        *buf,
+       size_t          bufsiz,
+       parent_cursor_t *cursor,
+       unsigned int    *count,
+       unsigned int    *more)
+{
+#if !defined(__sgi__)
+       errno = EOPNOTSUPP;
+       return -1;
+#else
+       int             error, fd;
+       char            *path;
+       xfs_fsop_getparents_handlereq_t gphreq;
+
+       if ((fd = handle_to_fsfd(hanp, &path)) < 0)
+               return -1;
+
+       gphreq.hreq.fd       = 0;
+       gphreq.hreq.path     = NULL;
+       gphreq.hreq.oflags   = O_LARGEFILE;
+       gphreq.hreq.ihandle  = hanp;
+       gphreq.hreq.ihandlen = hlen;
+       gphreq.hreq.ohandle  = NULL;
+       gphreq.hreq.ohandlen = NULL;
+       memcpy(&gphreq.pos, cursor, sizeof(gphreq.pos));
+       gphreq.buflen = bufsiz;
+       gphreq.buffer = buf;
+       gphreq.ocount = count;
+       gphreq.omore = more;
+
+       error = xfsctl(path, fd, XFS_IOC_GETPARENTPATHS, &gphreq);
+
+       memcpy(cursor, &gphreq.pos, sizeof(gphreq.pos));
+       return error;
+#endif
 }
 
 int