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* The runtime_loader's test_executable() no longer analyzes the 

executable permissions of the file by hand. We use _kern_access()
  instead, which also handles the root case correctly.
* The user and group arguments of test_executable() aren't needed any
  longer.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24483 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold 2008-03-20 01:45:00 +00:00
parent eb258077e7
commit 8560d1885b
4 changed files with 5 additions and 20 deletions
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3
headers/private/kernel/user_runtime.h
View File

@ -34,8 +34,7 @@ struct rld_export {
int32 symbolType, void **_location);
status_t (*get_nth_image_symbol)(image_id imageID, int32 num, char *symbolName,
int32 *nameLength, int32 *symbolType, void **_location);
status_t (*test_executable)(const char *path, uid_t user, gid_t group,
char *starter);
status_t (*test_executable)(const char *path, char *interpreter);
status_t (*get_next_image_dependency)(image_id id, uint32 *cookie,
const char **_name);

2
src/system/libroot/os/image.c
View File

@ -195,7 +195,7 @@ __get_next_image_dependency(image_id id, uint32 *cookie, const char **_name)
status_t
__test_executable(const char *path, char *invoker)
{
return __gRuntimeLoader->test_executable(path, geteuid(), getegid(), invoker);
return __gRuntimeLoader->test_executable(path, invoker);
}

17
src/system/runtime_loader/runtime_loader.c
View File

@ -267,12 +267,11 @@ open_executable(char *name, image_type type, const char *rpath,
both types, the caller will give scripts a proper treatment.
*/
status_t
test_executable(const char *name, uid_t user, gid_t group, char *invoker)
test_executable(const char *name, char *invoker)
{
char path[B_PATH_NAME_LENGTH];
char buffer[B_FILE_NAME_LENGTH];
// must be large enough to hold the ELF header
struct stat stat;
status_t status;
ssize_t length;
int fd;
@ -287,22 +286,10 @@ test_executable(const char *name, uid_t user, gid_t group, char *invoker)
return fd;
// see if it's executable at all
status = _kern_read_stat(fd, NULL, true, &stat, sizeof(struct stat));
status = _kern_access(path, X_OK);
if (status != B_OK)
goto out;
// shift mode bits, to check directly against accessMode
if (user == stat.st_uid)
stat.st_mode >>= 6;
else if (group == stat.st_gid)
stat.st_mode >>= 3;
if (~(stat.st_mode & S_IRWXO) & X_OK) {
status = B_NOT_ALLOWED;
goto out;
}
// read and verify the ELF header
length = _kern_read(fd, 0, buffer, sizeof(buffer));

3
src/system/runtime_loader/runtime_loader_private.h
View File

@ -25,8 +25,7 @@ extern "C" {
int runtime_loader(void *arg);
int open_executable(char *name, image_type type, const char *rpath,
const char *programPath);
status_t test_executable(const char *path, uid_t user, gid_t group,
char *starter);
status_t test_executable(const char *path, char *interpreter);
void terminate_program(void);
image_id load_program(char const *path, void **entry);