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LIBTRACEEVENT(3) | libtraceevent Manual | LIBTRACEEVENT(3) |
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 2.1RESOURCES¶
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.gitNOTES¶
- 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
11/26/2020 | libtraceevent 1.1.0 |