diff options
| author | Timo Teräs <timo.teras at iki.fi> | 2011-11-07 18:08:33 +0100 |
|---|---|---|
| committer | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2011-11-07 18:10:32 +0100 |
| commit | 0c7690f6a5d6e073052ee6487f768289db3a58f7 (patch) | |
| tree | 1028f6a895d2a3babe934d92585e43a99c009fde /ldso/libdl | |
| parent | 515d54433138596e81267237542bd9168b8cc787 (diff) | |
ldso: support RTLD_NOLOAD
So application query if specified module is loaded or not with
dlopen.
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Diffstat (limited to 'ldso/libdl')
| -rw-r--r-- | ldso/libdl/libdl.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/ldso/libdl/libdl.c b/ldso/libdl/libdl.c index c164ffbee..cbbbcd49e 100644 --- a/ldso/libdl/libdl.c +++ b/ldso/libdl/libdl.c @@ -52,11 +52,13 @@ extern struct link_map *_dl_update_slotinfo(unsigned long int req_modid); /* When libdl is loaded as a shared library, we need to load in * and use a pile of symbols from ldso... */ - -extern struct elf_resolve * _dl_load_shared_library(int, struct dyn_elf **, +#include <dl-elf.h> +#if 0 +extern struct elf_resolve * _dl_load_shared_library(unsigned, struct dyn_elf **, struct elf_resolve *, char *, int); extern int _dl_fixup(struct dyn_elf *rpnt, struct r_scope_elem *scope, int lazy); extern void _dl_protect_relro(struct elf_resolve * tpnt); +#endif extern int _dl_errno; extern struct dyn_elf *_dl_symbol_tables; extern struct dyn_elf *_dl_handles; @@ -308,7 +310,7 @@ void *dlopen(const char *libname, int flag) #endif /* A bit of sanity checking... */ - if (!(flag & (RTLD_LAZY|RTLD_NOW))) { + if (!(flag & (RTLD_LAZY|RTLD_NOW|RTLD_NOLOAD))) { _dl_error_number = LD_BAD_HANDLE; return NULL; } @@ -378,8 +380,9 @@ void *dlopen(const char *libname, int flag) /* Try to load the specified library */ _dl_if_debug_print("Trying to dlopen '%s', RTLD_GLOBAL:%d RTLD_NOW:%d\n", (char*)libname, (flag & RTLD_GLOBAL ? 1:0), (now_flag & RTLD_NOW ? 1:0)); - tpnt = _dl_load_shared_library(0, &rpnt, tfrom, (char*)libname, 0); + tpnt = _dl_load_shared_library((flag & RTLD_NOLOAD) ? DL_RESOLVE_NOLOAD : 0, + &rpnt, tfrom, (char*)libname, 0); if (tpnt == NULL) { _dl_unmap_cache(); return NULL; |