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Code Issues Releases Activity

Fix a problem with RTLD_TRACE flag to dlopen(3), which sometimes can return

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even if there was no error occured (when trying to dlopen(3) object that
already linked into executable which does dlopen(3) call). This is more
proper fix for `ldd /usr/lib/libc.so' problem, because the new behaviour
conforms to documentation.

Remove workaround from ldd.c (rev.1.32).

PR:		35099
Submitted by:	Nathan Hawkins <utsl@quic.net>
MFC after:	1 week
This commit is contained in:
Maxim Sobolev 2002-10-19 10:18:29 +00:00
parent be23b71211
commit d1cf9ea2c4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=105439
2 changed files with 12 additions and 11 deletions
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14
libexec/rtld-elf/rtld.c
View File

@ -1605,11 +1605,8 @@ dlopen(const char *name, int mode)
assert(*old_obj_tail == obj);
result = load_needed_objects(obj);
if (result != -1 && ld_tracing) {
trace_loaded_objects(obj);
wlock_release();
exit(0);
}
if (result != -1 && ld_tracing)
goto trace;
if (result == -1 ||
(init_dag(obj), relocate_objects(obj, mode == RTLD_NOW,
@ -1623,7 +1620,8 @@ dlopen(const char *name, int mode)
/* Make list of init functions to call. */
initlist_add_objects(obj, &obj->next, &initlist);
}
}
} else if (ld_tracing)
goto trace;
}
GDB_STATE(RT_CONSISTENT,obj ? &obj->linkmap : NULL);
@ -1635,6 +1633,10 @@ dlopen(const char *name, int mode)
objlist_clear(&initlist);
wlock_release();
return obj;
trace:
trace_loaded_objects(obj);
wlock_release();
exit(0);
}
void *

9
usr.bin/ldd/ldd.c
View File

@ -220,13 +220,12 @@ main(int argc, char *argv[])
}
break;
case 0:
if (is_shlib) {
if (dlopen(*argv, RTLD_TRACE))
_exit(0); /* libc.so */
warnx("%s: %s", *argv, dlerror());
} else {
if (is_shlib == 0) {
execl(*argv, *argv, (char *)NULL);
warn("%s", *argv);
} else {
dlopen(*argv, RTLD_TRACE);
warnx("%s: %s", *argv, dlerror());
}
_exit(1);
}