#ifndef _PROBE_FINDER_H
#define _PROBE_FINDER_H

#include <stdbool.h>
#include "util.h"
#include "intlist.h"
#include "probe-event.h"

#define MAX_PROBE_BUFFER	1024
#define MAX_PROBES		 128
#define MAX_PROBE_ARGS		 128

#define PROBE_ARG_VARS		"$vars"
#define PROBE_ARG_PARAMS	"$params"

static inline int is_c_varname(const char *name)
{
	/* TODO */
	return isalpha(name[0]) || name[0] == '_';
}

#ifdef HAVE_DWARF_SUPPORT

#include "dwarf-aux.h"

/* TODO: export debuginfo data structure even if no dwarf support */

/* debug information structure */
struct debuginfo {
	Dwarf		*dbg;
	Dwfl_Module	*mod;
	Dwfl		*dwfl;
	Dwarf_Addr	bias;
};

/* This also tries to open distro debuginfo */
struct debuginfo *debuginfo__new(const char *path);
void debuginfo__delete(struct debuginfo *dbg);

/* Find probe_trace_events specified by perf_probe_event from debuginfo */
int debuginfo__find_trace_events(struct debuginfo *dbg,
				 struct perf_probe_event *pev,
				 struct probe_trace_event **tevs);

/* Find a perf_probe_point from debuginfo */
int debuginfo__find_probe_point(struct debuginfo *dbg, unsigned long addr,
				struct perf_probe_point *ppt);

int debuginfo__get_text_offset(struct debuginfo *dbg, Dwarf_Addr *offs,
			       bool adjust_offset);

/* Find a line range */
int debuginfo__find_line_range(struct debuginfo *dbg, struct line_range *lr);

/* Find available variables */
int debuginfo__find_available_vars_at(struct debuginfo *dbg,
				      struct perf_probe_event *pev,
				      struct variable_list **vls);

/* Find a src file from a DWARF tag path */
int get_real_path(const char *raw_path, const char *comp_dir,
			 char **new_path);

struct probe_finder {
	struct perf_probe_event	*pev;		/* Target probe event */

	/* Callback when a probe point is found */
	int (*callback)(Dwarf_Die *sc_die, struct probe_finder *pf);

	/* For function searching */
	int			lno;		/* Line number */
	Dwarf_Addr		addr;		/* Address */
	const char		*fname;		/* Real file name */
	Dwarf_Die		cu_die;		/* Current CU */
	Dwarf_Die		sp_die;
	struct intlist		*lcache;	/* Line cache for lazy match */

	/* For variable searching */
#if _ELFUTILS_PREREQ(0, 142)
	/* Call Frame Information from .eh_frame */
	Dwarf_CFI		*cfi_eh;
	/* Call Frame Information from .debug_frame */
	Dwarf_CFI		*cfi_dbg;
#endif
	Dwarf_Op		*fb_ops;	/* Frame base attribute */
	unsigned int		machine;	/* Target machine arch */
	struct perf_probe_arg	*pvar;		/* Current target variable */
	struct probe_trace_arg	*tvar;		/* Current result variable */
};

struct trace_event_finder {
	struct probe_finder	pf;
	Dwfl_Module		*mod;		/* For solving symbols */
	struct probe_trace_event *tevs;		/* Found trace events */
	int			ntevs;		/* Number of trace events */
	int			max_tevs;	/* Max number of trace events */
};

struct available_var_finder {
	struct probe_finder	pf;
	Dwfl_Module		*mod;		/* For solving symbols */
	struct variable_list	*vls;		/* Found variable lists */
	int			nvls;		/* Number of variable lists */
	int			max_vls;	/* Max no. of variable lists */
	bool			child;		/* Search child scopes */
};

struct line_finder {
	struct line_range	*lr;		/* Target line range */

	const char		*fname;		/* File name */
	int			lno_s;		/* Start line number */
	int			lno_e;		/* End line number */
	Dwarf_Die		cu_die;		/* Current CU */
	Dwarf_Die		sp_die;
	int			found;
};

#endif /* HAVE_DWARF_SUPPORT */

#endif /*_PROBE_FINDER_H */
<input type='hidden' name='id' value='3365135d43f861003555c963b309672d053a2228'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-27 12:44:32 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-27 12:44:32 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/trace/events/sunrpc.h?id=3365135d43f861003555c963b309672d053a2228'>3365135d43f861003555c963b309672d053a2228</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/trace/events/sunrpc.h?id=3365135d43f861003555c963b309672d053a2228'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=3365135d43f861003555c963b309672d053a2228'>bfef4adec5da118bf1b3df7e5cff74f45af9e02d</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/trace/events/sunrpc.h?id=3365135d43f861003555c963b309672d053a2228'>include/trace/events/sunrpc.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/trace/events/sunrpc.h?id=5906374446386fd16fe562b042429d905d231ec3'>5906374446386fd16fe562b042429d905d231ec3</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/trace/events/sunrpc.h?id=3365135d43f861003555c963b309672d053a2228&amp;id2=5906374446386fd16fe562b042429d905d231ec3'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/trace/events/sunrpc.h?id=e0d76fa4475ef2cf4b52d18588b8ce95153d021b'>e0d76fa4475ef2cf4b52d18588b8ce95153d021b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/trace/events/sunrpc.h?id=3365135d43f861003555c963b309672d053a2228&amp;id2=e0d76fa4475ef2cf4b52d18588b8ce95153d021b'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'xfs-for-linus-4.10-rc6-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux</div><div class='commit-msg'>Pull xfs uodates from Darrick Wong:
 "I have some more fixes this week: better input validation, corruption
  avoidance, build fixes, memory leak fixes, and a couple from Christoph
  to avoid an ENOSPC failure.

  Summary:
   - Fix race conditions in the CoW code
   - Fix some incorrect input validation checks
   - Avoid crashing fs by running out of space when freeing inodes
   - Fix toctou race wrt whether or not an inode has an attr
   - Fix build error on arm
   - Fix page refcount corruption when readahead fails
   - Don't corrupt userspace in the bmap ioctl"

* tag 'xfs-for-linus-4.10-rc6-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: prevent quotacheck from overloading inode lru
  xfs: fix bmv_count confusion w/ shared extents
  xfs: clear _XBF_PAGES from buffers when readahead page
  xfs: extsize hints are not unlikely in xfs_bmap_btalloc
  xfs: remove racy hasattr check from attr ops
  xfs: use per-AG reservations for the finobt
  xfs: only update mount/resv fields on success in __xfs_ag_resv_init
  xfs: verify dirblocklog correctly
  xfs: fix COW writeback race
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=3365135d43f861003555c963b309672d053a2228'>Diffstat</a> (limited to 'include/trace/events/sunrpc.h')</div><table summary='diffstat' class='diffstat'>