Some ndctl routines return errno after logging a result. Given the log message may have updated errno save and restore it over calls to ->log_fn(). Suggested-by: Andy Rudoff <andy.rudoff(a)intel.com&gt; Signed-off-by: Dan Williams <dan.j.williams(a)intel.com&gt; --- util/log.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/util/log.c b/util/log.c index 8ecaf11d3d64..cc4d7d8aad7c 100644 --- a/util/log.c +++ b/util/log.c @@ -14,16 +14,19 @@ #include <stdlib.h> #include <ctype.h> #include <string.h> +#include <errno.h> #include <util/log.h> void do_log(struct log_ctx *ctx, int priority, const char *file, int line, const char *fn, const char *format, ...) { va_list args; + int errno_save = errno; va_start(args, format); ctx->log_fn(ctx, priority, file, line, fn, format, args); va_end(args); + errno = errno_save; } static void log_stderr(struct log_ctx *ctx, int priority, const char *file,