diff options
Diffstat (limited to 'dln.c')
| -rw-r--r-- | dln.c | 54 |
1 files changed, 41 insertions, 13 deletions
@@ -25,6 +25,7 @@ static void dln_loaderror(const char *format, ...); #endif #include "dln.h" #include "internal.h" +#include "internal/box.h" #include "internal/compilers.h" #ifdef HAVE_STDLIB_H @@ -76,6 +77,10 @@ void *xrealloc(); # include <unistd.h> #endif +#ifndef UNREACHABLE_RETURN +# define UNREACHABLE_RETURN(x) return (x) +#endif + #ifndef dln_loaderror static void dln_loaderror(const char *format, ...) @@ -284,7 +289,7 @@ dln_incompatible_func(void *handle, const char *funcname, void *const fp, const void *ex = dlsym(handle, funcname); if (!ex) return false; if (ex == fp) return false; -# if defined(HAVE_DLADDR) +# if defined(HAVE_DLADDR) && !defined(__CYGWIN__) Dl_info dli; if (dladdr(ex, &dli)) { *libname = dli.dli_fname; @@ -339,7 +344,7 @@ dln_disable_dlclose(void) #endif #if defined(_WIN32) || defined(USE_DLN_DLOPEN) -void * +static void * dln_open(const char *file) { static const char incompatible[] = "incompatible library version"; @@ -347,6 +352,7 @@ dln_open(const char *file) void *handle; #if defined(_WIN32) +# define DLN_DEFINED char message[1024]; /* Convert the file path to wide char */ @@ -373,6 +379,7 @@ dln_open(const char *file) # endif #elif defined(USE_DLN_DLOPEN) +# define DLN_DEFINED # ifndef RTLD_LAZY # define RTLD_LAZY 1 @@ -383,9 +390,13 @@ dln_open(const char *file) # ifndef RTLD_GLOBAL # define RTLD_GLOBAL 0 # endif +# ifndef RTLD_LOCAL +# define RTLD_LOCAL 0 /* TODO: 0??? some systems (including libc) use 0x00100 for RTLD_GLOBAL, 0x00000 for RTLD_LOCAL */ +# endif /* Load file */ - handle = dlopen(file, RTLD_LAZY|RTLD_GLOBAL); + int mode = rb_box_available() ? RTLD_LAZY|RTLD_LOCAL : RTLD_LAZY|RTLD_GLOBAL; + handle = dlopen(file, mode); if (handle == NULL) { error = dln_strerror(); goto failed; @@ -427,7 +438,7 @@ dln_open(const char *file) dln_loaderror("%s - %s", error, file); } -void * +static void * dln_sym(void *handle, const char *symbol) { #if defined(_WIN32) @@ -437,7 +448,7 @@ dln_sym(void *handle, const char *symbol) #endif } -static void * +static uintptr_t dln_sym_func(void *handle, const char *symbol) { void *func = dln_sym(handle, symbol); @@ -453,7 +464,7 @@ dln_sym_func(void *handle, const char *symbol) #endif dln_loaderror("%s - %s", error, symbol); } - return func; + return (uintptr_t)func; } #define dln_sym_callable(rettype, argtype, handle, symbol) \ @@ -497,10 +508,10 @@ abi_check_enabled_p(void) } #endif -void * -dln_load(const char *file) +static void * +dln_load_and_init(const char *file, const char *init_fct_name) { -#if defined(_WIN32) || defined(USE_DLN_DLOPEN) +#if defined(DLN_DEFINED) void *handle = dln_open(file); #ifdef RUBY_DLN_CHECK_ABI @@ -512,18 +523,17 @@ dln_load(const char *file) } #endif - char *init_fct_name; - init_funcname(&init_fct_name, file); - /* Call the init code */ dln_sym_callable(void, (void), handle, init_fct_name)(); return handle; #elif defined(_AIX) +# define DLN_DEFINED { void (*init_fct)(void); + /* TODO: check - AIX's load system call will return the first/last symbol/function? */ init_fct = (void(*)(void))load((char*)file, 1, 0); if (init_fct == NULL) { aix_loaderror(file); @@ -536,7 +546,25 @@ dln_load(const char *file) } #else dln_notimplement(); + UNREACHABLE_RETURN(0); #endif +} + +void * +dln_load(const char *file) +{ + return dln_load_feature(file, file); +} - return 0; /* dummy return */ +void * +dln_load_feature(const char *file, const char *fname) +{ +#if defined(DLN_DEFINED) + char *init_fct_name; + init_funcname(&init_fct_name, fname); + return dln_load_and_init(file, init_fct_name); +#else + dln_notimplement(); + UNREACHABLE_RETURN(0); +#endif } |