diff options
Diffstat (limited to 'elf/dlerror.c')
-rw-r--r-- | elf/dlerror.c | 57 |
1 files changed, 32 insertions, 25 deletions
diff --git a/elf/dlerror.c b/elf/dlerror.c index 0eed60a45d..4ec5037de4 100644 --- a/elf/dlerror.c +++ b/elf/dlerror.c @@ -23,42 +23,49 @@ Cambridge, MA 02139, USA. */ #include <string.h> #include <stdlib.h> -static int _dl_last_errcode; -static const char *_dl_last_errstring; +static int last_errcode; +static const char *last_errstring; +static const char *last_object_name; char * dlerror (void) { - char *ret; + static char *buf; + char *ret; - if (! _dl_last_errstring) - return NULL; - - if (_dl_last_errcode) + if (buf) { - static char *buf; - if (buf) - { - free (buf); - buf = NULL; - } - if (asprintf (&buf, "%s: %s", - _dl_last_errstring, strerror (_dl_last_errcode)) == -1) - return NULL; - else - ret = buf; + free (buf); + buf = NULL; } - else - ret = (char *) _dl_last_errstring; - /* Reset the error indicator. */ - _dl_last_errstring = NULL; - return ret; + if (! last_errstring) + return NULL; + + if (last_errcode == 0 && ! last_object_name) + ret = (char *) last_errstring; + else if (last_errcode == 0) + ret = (asprintf (&buf, "%s: %s", last_object_name, last_errstring) == -1 + ? NULL : buf); + else if (! last_object_name) + ret = (asprintf (&buf, "%s: %s", + last_errstring, strerror (last_errcode)) == -1 + ? NULL : buf); + else + ret = (asprintf (&buf, "%s: %s: %s", + last_object_name, last_errstring, + strerror (last_errcode)) == -1 + ? NULL : buf); + + /* Reset the error indicator. */ + last_errstring = NULL; + return ret; } int _dlerror_run (void (*operate) (void)) { - _dl_last_errcode = _dl_catch_error (&_dl_last_errstring, operate); - return _dl_last_errstring != NULL; + last_errcode = _dl_catch_error (&last_errstring, &last_object_name, + operate); + return last_errstring != NULL; } |