86 lines
2.0 KiB
Plaintext
86 lines
2.0 KiB
Plaintext
libtraceevent(3)
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================
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NAME
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----
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tep_strerror - Returns a string describing regular errno and tep error number.
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SYNOPSIS
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--------
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[verse]
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--
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*#include <event-parse.h>*
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int *tep_strerror*(struct tep_handle pass:[*]_tep_, enum tep_errno _errnum_, char pass:[*]_buf_, size_t _buflen_);
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--
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DESCRIPTION
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-----------
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The _tep_strerror()_ function converts tep error number into a human
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readable string.
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The _tep_ argument is trace event parser context. The _errnum_ is a regular
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errno, defined in errno.h, or a tep error number. The string, describing this
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error number is copied in the _buf_ argument. The _buflen_ argument is
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the size of the _buf_.
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It as a thread safe wrapper around strerror_r(). The library function has two
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different behaviors - POSIX and GNU specific. The _tep_strerror()_ API always
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behaves as the POSIX version - the error string is copied in the user supplied
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buffer.
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RETURN VALUE
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------------
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The _tep_strerror()_ function returns 0, if a valid _errnum_ is passed and the
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string is copied into _buf_. If _errnum_ is not a valid error number,
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-1 is returned and _buf_ is not modified.
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EXAMPLE
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-------
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[source,c]
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--
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#include <event-parse.h>
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...
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struct tep_handle *tep = tep_alloc();
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...
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char buf[32];
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char *pool = calloc(1, 128);
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if (tep == NULL) {
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tep_strerror(tep, TEP_ERRNO__MEM_ALLOC_FAILED, buf, 32);
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printf ("The pool is not initialized, %s", buf);
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}
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...
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--
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FILES
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-----
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[verse]
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--
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*event-parse.h*
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Header file to include in order to have access to the library APIs.
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*-ltraceevent*
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Linker switch to add when building a program that uses the library.
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--
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SEE ALSO
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--------
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_libtraceevent(3)_, _trace-cmd(1)_
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AUTHOR
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------
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[verse]
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--
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*Steven Rostedt* <rostedt@goodmis.org>, author of *libtraceevent*.
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*Tzvetomir Stoyanov* <tz.stoyanov@gmail.com>, author of this man page.
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--
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REPORTING BUGS
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--------------
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Report bugs to <linux-trace-devel@vger.kernel.org>
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LICENSE
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-------
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libtraceevent is Free Software licensed under the GNU LGPL 2.1
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RESOURCES
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---------
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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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