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 {
|