LIBTRACEEVENT

NAME

tep_strerror - Returns a string describing regular errno and tep error number.

SYNOPSIS

#include <event-parse.h>

int tep_strerror(struct tep_handle *tep, enum tep_errno errnum, char *buf, size_t buflen);

DESCRIPTION

The tep_strerror() function converts tep error number into a human readable string. The tep argument is trace event parser context. The errnum is a regular errno, defined in errno.h, or a tep error number. The string, describing this error number is copied in the buf argument. The buflen argument is the size of the buf.

It as a thread safe wrapper around strerror_r(). The library function has two different behaviors - POSIX and GNU specific. The tep_strerror() API always behaves as the POSIX version - the error string is copied in the user supplied buffer.

RETURN VALUE

The tep_strerror() function returns 0, if a valid errnum is passed and the string is copied into buf. If errnum is not a valid error number, -1 is returned and buf is not modified.

EXAMPLE

#include <event-parse.h>
...
struct tep_handle *tep = tep_alloc();
...
char buf[32];
char *pool = calloc(1, 128);
if (tep == NULL) {
tep_strerror(tep, TEP_ERRNO__MEM_ALLOC_FAILED, buf, 32);
printf ("The pool is not initialized, %s", buf);
}
...

FILES

event-parse.h
Header file to include in order to have access to the library APIs.
-ltraceevent
Linker switch to add when building a program that uses the library.

SEE ALSO

libtraceevent(3), trace-cmd(1)

AUTHOR

Steven Rostedt <rostedt@goodmis.org [1] >, author of libtraceevent.
Tzvetomir Stoyanov <tz.stoyanov@gmail.com [2] >, author of this man page.

REPORTING BUGS

Report bugs to <linux-trace-devel@vger.kernel.org [3] >

LICENSE

libtraceevent is Free Software licensed under the GNU LGPL 2.1

RESOURCES

https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git/

NOTES

1.

rostedt@goodmis.org

mailto:rostedt@goodmis.org

2.

tz.stoyanov@gmail.com

mailto:tz.stoyanov@gmail.com

3.

linux-trace-devel@vger.kernel.org

mailto:linux-trace-devel@vger.kernel.org