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Teach err.c how to live without standard I/O

This commit is contained in:
px4dev 2012-08-18 22:24:58 -07:00
parent 99515fc1dd
commit fcad5b52c5
1 changed files with 27 additions and 1 deletions
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28
apps/systemlib/err.c
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@ -38,7 +38,8 @@
* the same names.
*/
#include <stdio.h>
#include <nuttx/config.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
@ -47,17 +48,31 @@
#define NOCODE 1000 /* larger than maximum errno */
#if CONFIG_NFILE_STREAMS > 0
# include <stdio.h>
#elif defined(CONFIG_ARCH_LOWPUTC)
# include <debug.h>
extern int lib_lowvprintf(const char *fmt, va_list ap);
#else
# warning Cannot output without one of CONFIG_NFILE_STREAMS or CONFIG_ARCH_LOWPUTC
#endif
const char *
getprogname(void)
{
#if CONFIG_TASK_NAME_SIZE > 0
_TCB *thisproc = sched_self();
return thisproc->name;
#else
return "app";
#endif
}
static void
warnerr_core(int errcode, const char *fmt, va_list args)
{
#if CONFIG_NFILE_STREAMS > 0
fprintf(stderr, "%s: ", getprogname());
vfprintf(stderr, fmt, args);
@ -67,6 +82,17 @@ warnerr_core(int errcode, const char *fmt, va_list args)
if (errcode < NOCODE)
fprintf(stderr, ": %s", strerror(errcode));
fprintf(stderr, "\n");
#elif CONFIG_ARCH_LOWPUTC
lib_lowprintf("%s: ", getprogname());
lib_lowvprintf(fmt, args);
/* convenience as many parts of NuttX use negative errno */
if (errcode < 0)
errcode = -errcode;
if (errcode < NOCODE)
lib_lowprintf(": %s", strerror(errcode));
lib_lowprintf("\n");
#endif
}
void