diff options
-rw-r--r-- | src/ldso/dlerror.c | 52 | ||||
-rw-r--r-- | src/ldso/dynlink.c | 35 |
2 files changed, 55 insertions, 32 deletions
diff --git a/src/ldso/dlerror.c b/src/ldso/dlerror.c new file mode 100644 index 00000000..588828e9 --- /dev/null +++ b/src/ldso/dlerror.c @@ -0,0 +1,52 @@ +#include <dlfcn.h> +#include <stdlib.h> +#include <stdarg.h> +#include "pthread_impl.h" + +char *dlerror() +{ + pthread_t self = __pthread_self(); + if (!self->dlerror_flag) return 0; + self->dlerror_flag = 0; + char *s = self->dlerror_buf; + if (s == (void *)-1) + return "Dynamic linker failed to allocate memory for error message"; + else + return s; +} + +void __dl_thread_cleanup(void) +{ + pthread_t self = __pthread_self(); + if (self->dlerror_buf != (void *)-1) + free(self->dlerror_buf); +} + +__attribute__((__visibility__("hidden"))) +void __dl_vseterr(const char *fmt, va_list ap) +{ + va_list ap2; + va_copy(ap2, ap); + pthread_t self = __pthread_self(); + if (self->dlerror_buf != (void *)-1) + free(self->dlerror_buf); + size_t len = vsnprintf(0, 0, fmt, ap2); + va_end(ap2); + char *buf = malloc(len+1); + if (buf) { + vsnprintf(buf, len+1, fmt, ap); + } else { + buf = (void *)-1; + } + self->dlerror_buf = buf; + self->dlerror_flag = 1; +} + +__attribute__((__visibility__("hidden"))) +void __dl_seterr(const char *fmt, ...) +{ + va_list ap; + va_start(ap, fmt); + __dl_vseterr(fmt, ap); + va_end(ap); +} diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c index b42b3360..492c22a8 100644 --- a/src/ldso/dynlink.c +++ b/src/ldso/dynlink.c @@ -1945,29 +1945,13 @@ int __dlinfo(void *dso, int req, void *res) return 0; } -char *dlerror() -{ - pthread_t self = __pthread_self(); - if (!self->dlerror_flag) return 0; - self->dlerror_flag = 0; - char *s = self->dlerror_buf; - if (s == (void *)-1) - return "Dynamic linker failed to allocate memory for error message"; - else - return s; -} - int dlclose(void *p) { return invalid_dso_handle(p); } -void __dl_thread_cleanup(void) -{ - pthread_t self = __pthread_self(); - if (self->dlerror_buf != (void *)-1) - free(self->dlerror_buf); -} +__attribute__((__visibility__("hidden"))) +void __dl_vseterr(const char *, va_list); static void error(const char *fmt, ...) { @@ -1982,19 +1966,6 @@ static void error(const char *fmt, ...) return; } #endif - pthread_t self = __pthread_self(); - if (self->dlerror_buf != (void *)-1) - free(self->dlerror_buf); - size_t len = vsnprintf(0, 0, fmt, ap); + __dl_vseterr(fmt, ap); va_end(ap); - char *buf = malloc(len+1); - if (buf) { - va_start(ap, fmt); - vsnprintf(buf, len+1, fmt, ap); - va_end(ap); - } else { - buf = (void *)-1; - } - self->dlerror_buf = buf; - self->dlerror_flag = 1; } |