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8009558: linked_md.c::dll_build_name can get stuck in an infinite loop

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Reviewed-by: alanb, sspitsyn
This commit is contained in:
Staffan Larsen 2013-04-02 10:32:21 +02:00
parent 7d45058eaa
commit bce70c8f7b
7 changed files with 73 additions and 107 deletions
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2
jdk/src/share/back/export/sys.h
View File

@ -37,7 +37,7 @@
/* Implemented in linker_md.c */
void dbgsysBuildLibName(char *, int, char *, char *);
void dbgsysBuildLibName(char *, int, const char *, const char *);
void * dbgsysLoadLibrary(const char *, char *err_buf, int err_buflen);
void dbgsysUnloadLibrary(void *);
void * dbgsysFindLibraryEntry(void *, const char *);

8
jdk/src/share/back/transport.c
View File

@ -97,12 +97,12 @@ findTransportOnLoad(void *handle)
/* Load transport library (directory=="" means do system search) */
static void *
loadTransportLibrary(char *libdir, char *name)
loadTransportLibrary(const char *libdir, const char *name)
{
void *handle;
char libname[MAXPATHLEN+2];
char buf[MAXPATHLEN*2+100];
char *plibdir;
const char *plibdir;
/* Convert libdir from UTF-8 to platform encoding */
plibdir = NULL;
@ -131,12 +131,12 @@ loadTransportLibrary(char *libdir, char *name)
* JDK 1.2 javai.c v1.61
*/
static jdwpError
loadTransport(char *name, jdwpTransportEnv **transportPtr)
loadTransport(const char *name, jdwpTransportEnv **transportPtr)
{
JNIEnv *env;
jdwpTransport_OnLoad_t onLoad;
void *handle;
char *libdir;
const char *libdir;
/* Make sure library name is not empty */
if (name == NULL) {

2
jdk/src/share/demo/jvmti/hprof/hprof_md.h
View File

@ -69,7 +69,7 @@ unsigned md_htonl(unsigned l);
unsigned md_ntohs(unsigned short s);
unsigned md_ntohl(unsigned l);
void md_build_library_name(char *holder, int holderlen, char *pname, char *fname);
void md_build_library_name(char *holder, int holderlen, const char *pname, const char *fname);
void * md_load_library(const char *name, char *err_buf, int err_buflen);
void md_unload_library(void *handle);
void * md_find_library_entry(void *handle, const char *name);

35
jdk/src/solaris/back/linker_md.c
View File

@ -55,34 +55,27 @@
#endif
static void dll_build_name(char* buffer, size_t buflen,
const char* pname, const char* fname) {
// Based on os_solaris.cpp
const char* paths, const char* fname) {
char *path, *paths_copy, *next_token;
char *path_sep = PATH_SEPARATOR;
char *pathname = (char *)pname;
*buffer = '\0';
while (strlen(pathname) > 0) {
char *p = strchr(pathname, *path_sep);
if (p == NULL) {
p = pathname + strlen(pathname);
paths_copy = strdup(paths);
if (paths_copy == NULL) {
return;
}
/* check for NULL path */
if (p == pathname) {
continue;
}
(void)snprintf(buffer, buflen, "%.*s/lib%s." LIB_SUFFIX, (int)(p - pathname),
pathname, fname);
next_token = NULL;
path = strtok_r(paths_copy, PATH_SEPARATOR, &next_token);
while (path != NULL) {
snprintf(buffer, buflen, "%s/lib%s." LIB_SUFFIX, path, fname);
if (access(buffer, F_OK) == 0) {
break;
}
if (*p == '\0') {
pathname = p;
} else {
pathname = p + 1;
}
*buffer = '\0';
path = strtok_r(NULL, PATH_SEPARATOR, &next_token);
}
free(paths_copy);
}
/*
@ -103,7 +96,7 @@ dbgsysBuildFunName(char *name, int nameLen, int args_size, int encodingIndex)
* appropriate pre and extensions to a filename and the path
*/
void
dbgsysBuildLibName(char *holder, int holderlen, char *pname, char *fname)
dbgsysBuildLibName(char *holder, int holderlen, const char *pname, const char *fname)
{
const int pnamelen = pname ? strlen(pname) : 0;

34
jdk/src/solaris/demo/jvmti/hprof/hprof_md.c
View File

@ -381,38 +381,32 @@ md_ntohl(unsigned l)
}
static void dll_build_name(char* buffer, size_t buflen,
const char* pname, const char* fname) {
// Loosely based on os_solaris.cpp
const char* paths, const char* fname) {
char *path, *paths_copy, *next_token;
char *pathname = (char *)pname;
*buffer = '\0';
while (strlen(pathname) > 0) {
char *p = strchr(pathname, ':');
if (p == NULL) {
p = pathname + strlen(pathname);
paths_copy = strdup(paths);
if (paths_copy == NULL) {
return;
}
/* check for NULL path */
if (p == pathname) {
continue;
}
(void)snprintf(buffer, buflen, "%.*s/lib%s" JNI_LIB_SUFFIX,
(int)(p - pathname), pathname, fname);
next_token = NULL;
path = strtok_r(paths_copy, ":", &next_token);
while (path != NULL) {
snprintf(buffer, buflen, "%s/lib%s" JNI_LIB_SUFFIX, path, fname);
if (access(buffer, F_OK) == 0) {
break;
}
if (*p == '\0') {
pathname = p;
} else {
pathname = p + 1;
}
*buffer = '\0';
path = strtok_r(NULL, ":", &next_token);
}
free(paths_copy);
}
/* Create the actual fill filename for a dynamic library. */
void
md_build_library_name(char *holder, int holderlen, char *pname, char *fname)
md_build_library_name(char *holder, int holderlen, const char *pname, const char *fname)
{
int pnamelen;

41
jdk/src/windows/back/linker_md.c
View File

@ -39,38 +39,27 @@
#include "path_md.h"
static void dll_build_name(char* buffer, size_t buflen,
const char* pname, const char* fname) {
// Based on os_windows.cpp
const char* paths, const char* fname) {
char *path, *paths_copy, *next_token;
char *path_sep = PATH_SEPARATOR;
char *pathname = (char *)pname;
*buffer = '\0';
while (strlen(pathname) > 0) {
char *p = strchr(pathname, *path_sep);
if (p == NULL) {
p = pathname + strlen(pathname);
}
/* check for NULL path */
if (p == pathname) {
continue;
}
if (*(p-1) == ':' || *(p-1) == '\\') {
(void)_snprintf(buffer, buflen, "%.*s%s.dll", (int)(p - pathname),
pathname, fname);
} else {
(void)_snprintf(buffer, buflen, "%.*s\\%s.dll", (int)(p - pathname),
pathname, fname);
paths_copy = strdup(paths);
if (paths_copy == NULL) {
return;
}
next_token = NULL;
path = strtok_s(paths_copy, PATH_SEPARATOR, &next_token);
while (path != NULL) {
_snprintf(buffer, buflen, "%s\\%s.dll", path, fname);
if (_access(buffer, 0) == 0) {
break;
}
if (*p == '\0') {
pathname = p;
} else {
pathname = p + 1;
}
*buffer = '\0';
path = strtok_s(NULL, PATH_SEPARATOR, &next_token);
}
free(paths_copy);
}
/*
@ -113,7 +102,7 @@ dbgsysGetLastErrorString(char *buf, int len)
* Build a machine dependent library name out of a path and file name.
*/
void
dbgsysBuildLibName(char *holder, int holderlen, char *pname, char *fname)
dbgsysBuildLibName(char *holder, int holderlen, const char *pname, const char *fname)
{
const int pnamelen = pname ? (int)strlen(pname) : 0;

40
jdk/src/windows/demo/jvmti/hprof/hprof_md.c
View File

@ -368,42 +368,32 @@ get_last_error_string(char *buf, int len)
}
static void dll_build_name(char* buffer, size_t buflen,
const char* pname, const char* fname) {
// Loosley based on os_windows.cpp
const char* paths, const char* fname) {
char *path, *paths_copy, *next_token;
char *pathname = (char *)pname;
*buffer = '\0';
while (strlen(pathname) > 0) {
char *p = strchr(pathname, ';');
if (p == NULL) {
p = pathname + strlen(pathname);
}
/* check for NULL path */
if (p == pathname) {
continue;
}
if (*(p-1) == ':' || *(p-1) == '\\') {
(void)_snprintf(buffer, buflen, "%.*s%s.dll", (int)(p - pathname),
pathname, fname);
} else {
(void)_snprintf(buffer, buflen, "%.*s\\%s.dll", (int)(p - pathname),
pathname, fname);
paths_copy = strdup(paths);
if (paths_copy == NULL) {
return;
}
next_token = NULL;
path = strtok_s(paths_copy, ";", &next_token);
while (path != NULL) {
_snprintf(buffer, buflen, "%s\\%s.dll", path, fname);
if (_access(buffer, 0) == 0) {
break;
}
if (*p == '\0') {
pathname = p;
} else {
pathname = p + 1;
}
*buffer = '\0';
path = strtok_s(NULL, ";", &next_token);
}
free(paths_copy);
}
/* Build a machine dependent library name out of a path and file name. */
void
md_build_library_name(char *holder, int holderlen, char *pname, char *fname)
md_build_library_name(char *holder, int holderlen, const char *pname, const char *fname)
{
int pnamelen;