linux/tools/lib/traceevent/event-utils.h
Namhyung Kim e1aa7c30c5 tools lib traceevent: Fix strerror_r() use in pevent_strerror
glibc-2.16 starts to mark the function with attribute warn_unused_result
so that it can cause a build warning.

Since GNU version of strerror_r() can return a pointer to a string
without setting @buf, check the return value and copy/truncate it to our
buffer if needed.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1345618831-9148-5-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-22 16:04:05 -03:00

86 lines
2 KiB
C

/*
* Copyright (C) 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License (not later!)
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#ifndef __UTIL_H
#define __UTIL_H
#include <ctype.h>
/* Can be overridden */
void die(const char *fmt, ...);
void *malloc_or_die(unsigned int size);
void warning(const char *fmt, ...);
void pr_stat(const char *fmt, ...);
void vpr_stat(const char *fmt, va_list ap);
/* Always available */
void __die(const char *fmt, ...);
void __warning(const char *fmt, ...);
void __pr_stat(const char *fmt, ...);
void __vdie(const char *fmt, ...);
void __vwarning(const char *fmt, ...);
void __vpr_stat(const char *fmt, ...);
#define min(x, y) ({ \
typeof(x) _min1 = (x); \
typeof(y) _min2 = (y); \
(void) (&_min1 == &_min2); \
_min1 < _min2 ? _min1 : _min2; })
static inline char *strim(char *string)
{
char *ret;
if (!string)
return NULL;
while (*string) {
if (!isspace(*string))
break;
string++;
}
ret = string;
string = ret + strlen(ret) - 1;
while (string > ret) {
if (!isspace(*string))
break;
string--;
}
string[1] = 0;
return ret;
}
static inline int has_text(const char *text)
{
if (!text)
return 0;
while (*text) {
if (!isspace(*text))
return 1;
text++;
}
return 0;
}
#endif