17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 /* 27 * Machine Dependent implementation of the dynamic linking support 28 * for java. This routine is Unix specific. 29 */ 30 31 #include <stdio.h> 32 #include <dlfcn.h> 33 #include <unistd.h> 34 #include <stdlib.h> 35 #include <string.h> 36 37 #include "path_md.h" 38 39 #ifdef __APPLE__ 40 #define LIB_SUFFIX "dylib" 41 #else 42 #define LIB_SUFFIX "so" 43 #endif 44 45 static void dll_build_name(char* buffer, size_t buflen, 46 const char* paths, const char* fname) { 47 char *path, *paths_copy, *next_token; 48 49 paths_copy = strdup(paths); 50 if (paths_copy == NULL) { 51 return; 52 } 53 54 next_token = NULL; 55 path = strtok_r(paths_copy, PATH_SEPARATOR, &next_token); 56 57 while (path != NULL) { 58 snprintf(buffer, buflen, "%s/lib%s." LIB_SUFFIX, path, fname); 59 if (access(buffer, F_OK) == 0) { 60 break; 61 } 62 *buffer = '\0'; 63 path = strtok_r(NULL, PATH_SEPARATOR, &next_token); 64 } 65 66 free(paths_copy); 67 } 68 69 /* 70 * create a string for the JNI native function name by adding the 71 * appropriate decorations. 72 */ 73 int 74 dbgsysBuildFunName(char *name, int nameLen, int args_size, int encodingIndex) 75 { 76 // On Unix, there is only one encoding method. 77 if (encodingIndex == 0) 78 return 1; 79 return 0; 80 } 81 82 /* 83 * create a string for the dynamic lib open call by adding the 84 * appropriate pre and extensions to a filename and the path 85 */ 86 void 87 dbgsysBuildLibName(char *holder, int holderlen, const char *pname, 88 const char *fname) 89 { 90 const int pnamelen = pname ? strlen(pname) : 0; 91 92 *holder = '\0'; 93 // Quietly truncate on buffer overflow. Should be an error. 94 if (pnamelen + (int)strlen(fname) + 10 > holderlen) { 95 return; 96 } 97 98 if (pnamelen == 0) { 99 (void)snprintf(holder, holderlen, "lib%s." LIB_SUFFIX, fname); 100 } else { 101 dll_build_name(holder, holderlen, pname, fname); 102 } 103 } 104 105 void * 106 dbgsysLoadLibrary(const char *name, char *err_buf, int err_buflen) 107 { 108 void * result; 109 result = dlopen(name, RTLD_LAZY); 110 if (result == NULL) { 111 (void)strncpy(err_buf, dlerror(), err_buflen-2); 112 err_buf[err_buflen-1] = '\0'; 113 } 114 return result; 115 } 116 117 void dbgsysUnloadLibrary(void *handle) 118 { | 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 /* 27 * Machine Dependent implementation of the dynamic linking support 28 * for java. This routine is Unix specific. 29 */ 30 31 #include <stdio.h> 32 #include <dlfcn.h> 33 #include <unistd.h> 34 #include <stdlib.h> 35 #include <string.h> 36 37 #include "util.h" 38 #include "path_md.h" 39 40 #ifdef __APPLE__ 41 #define LIB_SUFFIX "dylib" 42 #else 43 #define LIB_SUFFIX "so" 44 #endif 45 46 static void dll_build_name(char* buffer, size_t buflen, 47 const char* paths, const char* fname) { 48 char *path, *paths_copy, *next_token; 49 *buffer = '\0'; 50 51 paths_copy = strdup(paths); 52 if (paths_copy == NULL) { 53 return; 54 } 55 56 next_token = NULL; 57 path = strtok_r(paths_copy, PATH_SEPARATOR, &next_token); 58 59 while (path != NULL) { 60 size_t result_len = (size_t)snprintf(buffer, buflen, "%s/lib%s." LIB_SUFFIX, path, fname); 61 if (result_len >= buflen) { 62 EXIT_ERROR(JVMTI_ERROR_INVALID_LOCATION, "One or more of the library paths supplied to jdwp, " 63 "likely by sun.boot.library.path, is too long."); 64 } else if (access(buffer, F_OK) == 0) { 65 break; 66 } 67 *buffer = '\0'; 68 path = strtok_r(NULL, PATH_SEPARATOR, &next_token); 69 } 70 71 free(paths_copy); 72 } 73 74 /* 75 * create a string for the JNI native function name by adding the 76 * appropriate decorations. 77 */ 78 int 79 dbgsysBuildFunName(char *name, int nameLen, int args_size, int encodingIndex) 80 { 81 // On Unix, there is only one encoding method. 82 if (encodingIndex == 0) 83 return 1; 84 return 0; 85 } 86 87 /* 88 * create a string for the dynamic lib open call by adding the 89 * appropriate pre and extensions to a filename and the path 90 */ 91 void 92 dbgsysBuildLibName(char *holder, int holderlen, const char *pname, 93 const char *fname) 94 { 95 const int pnamelen = pname ? strlen(pname) : 0; 96 97 if (pnamelen == 0) { 98 if (pnamelen + (int)strlen(fname) + 10 > holderlen) { 99 EXIT_ERROR(JVMTI_ERROR_INVALID_LOCATION, "One or more of the library paths supplied to jdwp, " 100 "likely by sun.boot.library.path, is too long."); 101 } 102 (void)snprintf(holder, holderlen, "lib%s." LIB_SUFFIX, fname); 103 } else { 104 dll_build_name(holder, holderlen, pname, fname); 105 } 106 } 107 108 void * 109 dbgsysLoadLibrary(const char *name, char *err_buf, int err_buflen) 110 { 111 void * result; 112 result = dlopen(name, RTLD_LAZY); 113 if (result == NULL) { 114 (void)strncpy(err_buf, dlerror(), err_buflen-2); 115 err_buf[err_buflen-1] = '\0'; 116 } 117 return result; 118 } 119 120 void dbgsysUnloadLibrary(void *handle) 121 { |