diff options
| -rw-r--r-- | include/dlfcn.h | 110 |
1 files changed, 106 insertions, 4 deletions
diff --git a/include/dlfcn.h b/include/dlfcn.h index 282fd076c..2348e436d 100644 --- a/include/dlfcn.h +++ b/include/dlfcn.h @@ -1,5 +1,6 @@ /* User functions for run-time dynamic loading. - Copyright (C) 1995-1999,2000,2001,2003,2004 Free Software Foundation, Inc. + Copyright (C) 1995-1999,2000,2001,2003,2004,2006 + Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -39,6 +40,16 @@ the run-time address of the symbol called NAME in the global scope is returned. */ # define RTLD_DEFAULT ((void *) 0) + + +# if 0 /* uClibc doesnt support this */ +/* Type for namespace indeces. */ +typedef long int Lmid_t; + +/* Special namespace ID values. */ +# define LM_ID_BASE 0 /* Initial namespace. */ +# define LM_ID_NEWLM -1 /* For dlmopen: request new namespace. */ +# endif #endif __BEGIN_DECLS @@ -56,8 +67,10 @@ extern int dlclose (void *__handle) __THROW __nonnull ((1)); extern void *dlsym (void *__restrict __handle, __const char *__restrict __name) __THROW __nonnull ((2)); -#if 0 -#ifdef __USE_GNU +#if 0 /*def __USE_GNU*/ +/* Like `dlopen', but request object to be allocated in a new namespace. */ +extern void *dlmopen (Lmid_t __nsid, __const char *__file, int __mode) __THROW; + /* Find the run-time address in the shared object HANDLE refers to of the symbol called NAME with VERSION. */ extern void *dlvsym (void *__restrict __handle, @@ -65,7 +78,6 @@ extern void *dlvsym (void *__restrict __handle, __const char *__restrict __version) __THROW __nonnull ((2, 3)); #endif -#endif /* When any of the above functions fails, call this function to return a string describing the error. Each call resets @@ -89,10 +101,100 @@ typedef struct extern int dladdr (__const void *__address, Dl_info *__info) __THROW __nonnull ((2)); +#if 0 /* not supported by uClibc */ +/* Same as `dladdr', but additionally sets *EXTRA_INFO according to FLAGS. */ +extern int dladdr1 (__const void *__address, Dl_info *__info, + void **__extra_info, int __flags) __THROW __nonnull ((2)); + +/* These are the possible values for the FLAGS argument to `dladdr1'. + This indicates what extra information is stored at *EXTRA_INFO. + It may also be zero, in which case the EXTRA_INFO argument is not used. */ +enum + { + /* Matching symbol table entry (const ElfNN_Sym *). */ + RTLD_DL_SYMENT = 1, + + /* The object containing the address (struct link_map *). */ + RTLD_DL_LINKMAP = 2 + }; + + +/* Get information about the shared object HANDLE refers to. + REQUEST is from among the values below, and determines the use of ARG. + + On success, returns zero. On failure, returns -1 and records an error + message to be fetched with `dlerror'. */ +extern int dlinfo (void *__restrict __handle, + int __request, void *__restrict __arg) + __THROW __nonnull ((1, 3)); + +/* These are the possible values for the REQUEST argument to `dlinfo'. */ +enum + { + /* Treat ARG as `lmid_t *'; store namespace ID for HANDLE there. */ + RTLD_DI_LMID = 1, + + /* Treat ARG as `struct link_map **'; + store the `struct link_map *' for HANDLE there. */ + RTLD_DI_LINKMAP = 2, + + RTLD_DI_CONFIGADDR = 3, /* Unsupported, defined by Solaris. */ + + /* Treat ARG as `Dl_serinfo *' (see below), and fill in to describe the + directories that will be searched for dependencies of this object. + RTLD_DI_SERINFOSIZE fills in just the `dls_cnt' and `dls_size' + entries to indicate the size of the buffer that must be passed to + RTLD_DI_SERINFO to fill in the full information. */ + RTLD_DI_SERINFO = 4, + RTLD_DI_SERINFOSIZE = 5, + + /* Treat ARG as `char *', and store there the directory name used to + expand $ORIGIN in this shared object's dependency file names. */ + RTLD_DI_ORIGIN = 6, + + RTLD_DI_PROFILENAME = 7, /* Unsupported, defined by Solaris. */ + RTLD_DI_PROFILEOUT = 8, /* Unsupported, defined by Solaris. */ + + /* Treat ARG as `size_t *', and store there the TLS module ID + of this object's PT_TLS segment, as used in TLS relocations; + store zero if this object does not define a PT_TLS segment. */ + RTLD_DI_TLS_MODID = 9, + + /* Treat ARG as `void **', and store there a pointer to the calling + thread's TLS block corresponding to this object's PT_TLS segment. + Store a null pointer if this object does not define a PT_TLS + segment, or if the calling thread has not allocated a block for it. */ + RTLD_DI_TLS_DATA = 10, + + RTLD_DI_MAX = 10, + }; + + +/* This is the type of elements in `Dl_serinfo', below. + The `dls_name' member points to space in the buffer passed to `dlinfo'. */ +typedef struct +{ + char *dls_name; /* Name of library search path directory. */ + unsigned int dls_flags; /* Indicates where this directory came from. */ +} Dl_serpath; + +/* This is the structure that must be passed (by reference) to `dlinfo' for + the RTLD_DI_SERINFO and RTLD_DI_SERINFOSIZE requests. */ +typedef struct +{ + size_t dls_size; /* Size in bytes of the whole buffer. */ + unsigned int dls_cnt; /* Number of elements in `dls_serpath'. */ + Dl_serpath dls_serpath[1]; /* Actually longer, dls_cnt elements. */ +} Dl_serinfo; + +#else + /* Get information about the shared objects currently loaded */ extern int dlinfo (void); #endif +#endif /* __USE_GNU */ + __END_DECLS |