Merge commit 'origin/master' into pr6429-comp-unwindsyms

* commit 'origin/master':
  Always include libdw using link groups.
  Fix bug in handling process(PID) probes.
  Added tests for 'process(PID)' variants.
  This commit makes changes to the VFS tapset. The changes include deprecation of
  syscalls2.stp: Add sys_renameat.
  Only probe lines once for the :* wildcard line pattern.
  Revert checking address in runtime
  bz451707: fix conversions.exp test $name
  Cleanup in tapsets.cxx
  Added powerpc support to runtime/syscall.h.
  Remove validating _stext due to many aliased symbols
  PR6646: Add checking address in runtime
  Fixed offset argument to vm_callback.

1 files changed, 297 insertions, 6 deletions

diff --git a/tapset/vfs.stp b/tapset/vfs.stp
index 6073dffc..78c79051 100644
--- a/tapset/vfs.stp
+++ b/tapset/vfs.stp
@@ -57,6 +57,18 @@ function __page_ino:long (page:long) %{ /* pure */
 	CATCH_DEREF_FAULT();
 %}
 
+function __address_inode:long (page:long) %{ /* pure */
+	struct page *page = (struct page *)(long)THIS->page;
+	struct address_space *mapping =
+			(struct address_space *)(long)THIS;
+	if (mapping == NULL) {
+		THIS->__retvalue = -1;
+	} else {
+		THIS->__retvalue = (long)kread(&(mapping->host));
+	}
+	CATCH_DEREF_FAULT();
+%}
+
 function __page_dev:long (page:long) %{ /* pure */
 	struct page *page = (struct page *)(long)THIS->page;
 	struct address_space *mapping = page? kread(&(page->mapping)) : NULL;
@@ -152,11 +164,47 @@ function __file_filename:string (file:long) %{ /* pure */
 	CATCH_DEREF_FAULT();
 %}
 
+function __inode_num:long(file:long)
+%{
+	struct file *file = NULL;
+	struct dentry *dentry = NULL;
+	struct inode *inode = NULL;
+
+	file = (struct file *)(long)THIS->file;
+	dentry = file? kread(&(file->f_dentry)) : NULL;
+	inode = dentry? kread(&(dentry->d_inode)) : NULL;
+	THIS->__retvalue = inode? (long)(kread(&(inode->i_ino))) : 0;
+	CATCH_DEREF_FAULT();
+%}
+
+function _get_fopv_size:long (iov:long, nr_segs:long)
+%{
+	struct iovec *iovp = (struct iovec *)(long)THIS->iov;
+	if (iovp) {
+		int i;
+		THIS->__retvalue = 0;
+		for (i = 0 ; i < THIS->nr_segs ; i++)
+			THIS->__retvalue += kread(&(iovp[i].iov_len));
+	} else
+		THIS->__retvalue = -1;
+
+	CATCH_DEREF_FAULT();
+%}
+
+function _dev_minor:long (dev:long) %{ /* pure */
+	THIS->__retvalue = (long)MINOR((dev_t)THIS->dev);
+%}
+
+function _dev_major:long (dev:long) %{ /* pure */
+	THIS->__retvalue = (long)MAJOR((dev_t)THIS->dev);
+%}
+
 probe generic.fop.llseek = kernel.function ("generic_file_llseek")
 {
 	dev = __file_dev($file)
 	devname = __find_bdevname(dev, __file_bdev($file))
 	ino = __file_ino($file)
+	file = $file
 
 	offset = $offset
 	origin = $origin
@@ -168,11 +216,19 @@ probe generic.fop.llseek = kernel.function ("generic_file_llseek")
 probe generic.fop.llseek.return = kernel.function ("generic_file_llseek").return
 {
 	name = "generic_file_llseek"
-	retstr = returnstr(1)
+	name = "generic_file_llseek"
+	retstr = $return
+	file = $file
+	offset = $offset
+	origin = $origin
+
+	error = $return < 0 ? $return : 0
+	error_str = error ? errno_str(error) : ""
 }
 
 probe generic.fop.aio_read = kernel.function ("generic_file_aio_read")
 {
+	file = $iocb->ki_filp
 	dev = __file_dev($iocb->ki_filp)
 	devname = __find_bdevname(dev, __file_bdev($iocb->ki_filp))
 	ino = __file_ino($iocb->ki_filp)
@@ -194,9 +250,15 @@ probe generic.fop.aio_read = kernel.function ("generic_file_aio_read")
 }
 probe generic.fop.aio_read.return = kernel.function ("generic_file_aio_read").return
 {
+	file = $iocb->ki_filp
+	nr_segs = $nr_segs
 	name = "generic_file_aio_read"
 	retstr = sprintf("%d", $return)
 
+	bytes_read = $return > 0 ? $return : 0
+	error = $return < 0 ? $return : 0
+ 	error_str = error ? errno_str(error) : ""
+
 	if ($return > 0) {
 		size = $return
 		units = "bytes"
@@ -205,6 +267,7 @@ probe generic.fop.aio_read.return = kernel.function ("generic_file_aio_read").re
 
 probe generic.fop.aio_write = kernel.function ("generic_file_aio_write")
 {
+	file = $iocb->ki_filp
 	dev = __file_dev($iocb->ki_filp)
 	devname = __find_bdevname(dev, __file_bdev($iocb->ki_filp))
 	ino = __file_ino($iocb->ki_filp)
@@ -226,6 +289,7 @@ probe generic.fop.aio_write = kernel.function ("generic_file_aio_write")
 }
 probe generic.fop.aio_write.return = kernel.function ("generic_file_aio_write").return
 {
+	file = $iocb->ki_filp
 	name = "generic_file_aio_write"
 	retstr = sprintf("%d", $return)
 
@@ -235,6 +299,7 @@ probe generic.fop.aio_write.return = kernel.function ("generic_file_aio_write").
 	}
 }
 
+%( kernel_v < "2.6.19" %?
 probe generic.fop.readv = kernel.function ("generic_file_readv") ?
 {
 	dev = __file_dev($filp)
@@ -279,20 +344,28 @@ probe generic.fop.writev = kernel.function ("generic_file_writev")?
 }
 probe generic.fop.writev.return = kernel.function ("generic_file_writev").return ?
 {
+	file = $file
 	name = "generic_file_writev"
 	retstr = sprintf("%d", $return)
 
+	bytes_written = $return > 0 ? $return : 0
+	error = $return < 0 ? $return : 0
+	error_str = error ? errno_str(error) : ""
+
 	if ($return > 0) {
 		size = $return
 		units = "bytes"
 	}
 }
+%:
+%)
 
 /* checks for aops->readpage, if not defined, return -ENOEXEC
    else assigns generic_file_vm_ops to vma
    add filemap_nopage, filemap_populate */
 probe generic.fop.mmap = kernel.function ("generic_file_mmap")
 {
+	file = $file
 	dev = __file_dev($file)
 	devname = __find_bdevname(dev, __file_bdev($file))
 	ino = __file_ino($file)
@@ -306,8 +379,12 @@ probe generic.fop.mmap = kernel.function ("generic_file_mmap")
 }
 probe generic.fop.mmap.return = kernel.function ("generic_file_mmap").return
 {
+	file = $file
 	name = "generic_file_mmap"
 	retstr = sprintf("%d", $return)
+
+	error = $return < 0 ? $return : 0
+	error_str = error ? errno_str(error) : ""
 }
 
 probe generic.fop.open = kernel.function ("generic_file_open")
@@ -362,6 +439,7 @@ probe generic.fop.splice_read = kernel.function ("generic_file_splice_read") ?
 	dev = __file_dev($in)
 	devname = __find_bdevname(dev, __file_bdev($in))
 	ino = __file_ino($in)
+	file = $in
 
 	len = $len
 	flags = $flags
@@ -376,9 +454,17 @@ probe generic.fop.splice_read.return = kernel.function ("generic_file_splice_rea
 {
 	name = "generic_file_splice_read"
 	retstr = sprintf("%d", $return)
+	file = $in
+	ino = __file_ino($in)
+	dev_major = _dev_major(_dev)
+	dev_minor = _dev_minor(_dev)
 
-	if ($return > 0) {
-		size = $return
+	ret = $return
+	error = ret < 0 ? ret : 0
+	error_str = error ? errno_str(error) : ""
+
+	if (error) {
+		size = ret
 		units = "bytes"
 	}
 }
@@ -388,6 +474,7 @@ probe generic.fop.splice_write = kernel.function ("generic_file_splice_write") ?
 	dev = __file_dev($out)
 	devname = __find_bdevname(dev, __file_bdev($out))
 	ino = __file_ino($out)
+	file = $out
 
 	len = $len
 	flags = $flags
@@ -403,12 +490,18 @@ probe generic.fop.splice_write.return = kernel.function ("generic_file_splice_wr
 	name = "generic_file_splice_write"
 	retstr = sprintf("%d", $return)
 
-	if ($return > 0) {
+	file = $out
+
+	error = $return < 0 ? $return : 0
+	error_str = error ? errno_str(error) : ""
+
+	if (error) {
 		size = $return
 		units = "bytes"
 	}
 }
 
+%( kernel_v < "2.6.19" %?
 probe generic.fop.read = kernel.function ("generic_file_read") ?
 {
 	dev = __file_dev($filp)
@@ -458,6 +551,7 @@ probe generic.fop.write.return = kernel.function ("generic_file_write").return ?
 		units = "bytes"
 	}
 }
+%)
 
 /* generic_writepages calls mpage_writepages(mapping, wbc, NULL) */
 probe generic.aop.writepages = kernel.function ("mpage_writepages")
@@ -494,12 +588,19 @@ probe vfs.do_sync_read = kernel.function ("do_sync_read")
 
 	size = len
 	units = "bytes"
+	bytes_to_read = len
 }
 probe vfs.do_sync_read.return = kernel.function ("do_sync_read").return
 {
 	name = "do_sync_read"
 	retstr = sprintf("%d", $return)
 
+	bytes_to_read = $len
+	ret = $return
+	bytes_read = ret > 0 ? ret : 0
+	error = ret < 0 ? ret : 0
+	error_str = error ? errno_str(error) : ""
+
 	if ($return > 0) {
 		size = $return
 		units = "bytes"
@@ -515,6 +616,7 @@ probe vfs.do_sync_write = kernel.function ("do_sync_write")
 	len = $len
 	pos = ppos_pos($ppos)
 	buf = $buf
+	bytes_to_write = len
 
 	name = "do_sync_write"
 	argstr = sprintf("%d, %d , %p", len, pos, buf)
@@ -527,8 +629,15 @@ probe vfs.do_sync_write.return = kernel.function ("do_sync_write").return
 	name = "do_sync_write"
 	retstr = sprintf("%d", $return)
 
-	if ($return > 0) {
-		size = $return
+	bytes_to_write = $len
+	ppos = $ppos
+	ret = $return
+	bytes_written = ret > 0 ? ret : 0
+	error = $return < 0 ? ret : 0
+ 	error_str = error ? errno_str(error) : ""
+
+	if (error) {
+		size = ret
 		units = "bytes"
 	}
 }
@@ -677,3 +786,185 @@ probe vfs.remove_from_page_cache.return = kernel.function ("__remove_from_page_c
 	retstr = sprintf("N/A")
 }
 
+probe vfs.read = kernel.function ("vfs_read")
+{
+	file = $file
+	pos = $pos
+	buf = $buf
+	bytes_to_read = $count
+}
+
+probe vfs.read.return = kernel.function ("vfs_read").return
+{
+	file = $file
+	pos = $pos
+	buf = $buf
+	bytes_to_read = $count
+
+	ret = $return
+	bytes_read = ret > 0 ? ret : 0
+	error = ret < 0 ? ret : 0
+	error_str = error ? errno_str(error) : ""
+}
+
+probe vfs.readv = kernel.function ("vfs_readv")
+{
+	file = $file
+	pos = $pos
+	vec = $vec
+	vlen = $vlen
+	bytes_to_read = _get_fopv_size($vec, $vlen)
+}
+
+probe vfs.readv.return = kernel.function ("vfs_readv").return
+{
+	file = $file
+	pos = $pos
+	vec = $vec
+	vlen = $vlen
+	bytes_to_read = _get_fopv_size($vec, $vlen)
+
+	ret = $return
+	bytes_read = ret > 0 ? ret : 0
+	error = ret < 0 ? ret : 0
+	error_str = error ? errno_str(error) : ""
+}
+
+probe vfs.write = kernel.function ("vfs_write")
+{
+	file = $file
+	pos = $pos
+	buf = $buf
+	bytes_to_write = $count
+}
+
+probe vfs.write.return = kernel.function ("vfs_write").return
+{
+	file = $file
+	pos = $pos
+	buf = $buf
+	bytes_to_write = $count
+
+	ret = $return
+	bytes_written = ret > 0 ? ret : 0
+	error = ret < 0 ? ret : 0
+	error_str = error ? errno_str(error) : ""
+}
+
+probe vfs.writev = kernel.function("vfs_writev")
+{
+	file = $file
+	pos = $pos
+	vlen = $vlen
+	vec = $vec
+	bytes_to_write = _get_fopv_size($vec, $vlen)
+}
+
+probe vfs.writev.return = kernel.function ("vfs_writev").return
+{
+	file = $file
+	pos = $pos
+	vlen = $vlen
+	vec = $vec
+	bytes_to_write = _get_fopv_size($vec, $vlen)
+
+	ret = $return
+	bytes_written = ret > 0 ? ret : 0
+	error = ret < 0 ? ret : 0
+	error_str = error ? errno_str(error) : ""
+}
+
+probe _vfs.generic_file_readonly_mmap =
+kernel.function("generic_file_readonly_mmap")
+{
+	file = $file
+	vma = $vma
+}
+
+probe _vfs.generic_file_readonly_mmap.return = kernel.function ("generic_file_readonly_mmap").return
+{
+	file = $file
+	vma = $vma
+
+	ret = $return
+	error = ret < 0 ? ret : 0
+	error_str = error ? errno_str(error) : ""
+}
+
+probe _vfs.generic_block_bmap = kernel.function ("generic_block_bmap")
+{
+	mapping = $mapping
+	block = $block
+	get_block = $get_block
+}
+
+probe _vfs.generic_commit_write = kernel.function ("generic_commit_write")
+{
+	file = $file
+	page = $page
+	from = $from
+	to = $to
+}
+
+probe _vfs.block_prepare_write = kernel.function ("__block_prepare_write")
+{
+	_inode = $inode
+	page = $page
+	write_from = $from
+	write_upto = $to
+}
+
+probe _vfs.block_prepare_write.return = kernel.function("__block_prepare_write").return
+{
+	_inode = $inode
+	page = $page
+	write_from = $from
+	write_upto = $to
+
+	ret = $return
+	error = ret < 0 ? ret : 0
+	error_str = error ? errno_str(error) : ""
+}
+
+probe _vfs.block_write_begin = kernel.function ("block_write_begin")
+{
+	file = $file
+	pos = $pos
+	len = $len
+	flags = $flags
+
+	_inode = __address_inode($mapping)
+}
+
+probe _vfs.block_write_begin.return = kernel.function ("block_write_begin").return
+{
+	file = $file
+	pos = $pos
+	len = $len
+	flags = $flags
+
+	_inode = __address_inode($mapping)
+
+	ret = $return
+	error = ret < 0 ? ret : 0
+	error_str = error ? errno_str(error) : ""
+}
+
+probe _vfs.block_write_end = kernel.function ("block_write_end")
+{
+	file = $file
+	pos = $pos
+	len = $len
+	page = $page
+	_inode = __address_inode($mapping)
+}
+
+probe _vfs.block_write_end.return = kernel.function ("block_write_end").return
+{
+	file = $file
+	pos = $pos
+	len = $len
+	page = $page
+	_inode = __address_inode($mapping)
+	ret = $return
+}