From 6774809b6249d9d4efd982b6e3ca377c84482d9a Mon Sep 17 00:00:00 2001 From: David 'Digit' Turner Date: Wed, 21 Jul 2010 16:18:21 -0700 Subject: [PATCH] linker: Support dlopen(NULL, ...) properly. Change-Id: Icba37823cb350c34848cc466d144c3a0af87c94c --- libc/docs/CHANGES.TXT | 2 ++ linker/linker.c | 13 ++++++++++++- 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/libc/docs/CHANGES.TXT b/libc/docs/CHANGES.TXT index 96f25d34c..d1d82de49 100644 --- a/libc/docs/CHANGES.TXT +++ b/libc/docs/CHANGES.TXT @@ -70,6 +70,8 @@ Differences between current and Android 2.2: - : fixed implementation of fstatfs() (also fixes fpathconf() which uses it). +- : fixed dlopen() implementation to support dlopen(NULL, ...). + This allows one to look at the dynamic symbols exported by an executable. ------------------------------------------------------------------------------- Differences between Android 2.2. and Android 2.1: diff --git a/linker/linker.c b/linker/linker.c index 5e04e24d8..89586eb3c 100644 --- a/linker/linker.c +++ b/linker/linker.c @@ -1200,7 +1200,17 @@ init_library(soinfo *si) soinfo *find_library(const char *name) { soinfo *si; - const char *bname = strrchr(name, '/'); + const char *bname; + +#if ALLOW_SYMBOLS_FROM_MAIN + if (name == NULL) + return somain; +#else + if (name == NULL) + return NULL; +#endif + + bname = strrchr(name, '/'); bname = bname ? bname + 1 : name; for(si = solist; si != 0; si = si->next){ @@ -2193,6 +2203,7 @@ unsigned __linker_init(unsigned **elfdata) si->dynamic = (unsigned *)-1; si->wrprotect_start = 0xffffffff; si->wrprotect_end = 0; + si->refcount = 1; /* Use LD_LIBRARY_PATH if we aren't setuid/setgid */ if (ldpath_env && getuid() == geteuid() && getgid() == getegid()) -- 2.11.0