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author | Renato Botelho <renato@netgate.com> | 2016-08-25 10:40:54 -0300 |
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committer | Renato Botelho <renato@netgate.com> | 2016-08-25 10:40:54 -0300 |
commit | 5f4dbd408a354e294fdffc23ee889af03b7cfc28 (patch) | |
tree | 2d140e0691c400a324f9da94ed1282ab1a1c8710 /libexec/rtld-elf/rtld.c | |
parent | ff37ccbef82fdcee6f5306945547bc8541986a03 (diff) | |
parent | 986f593e4573a0f751ae6fa39b49e0a0dcbefbf8 (diff) | |
download | FreeBSD-src-5f4dbd408a354e294fdffc23ee889af03b7cfc28.zip FreeBSD-src-5f4dbd408a354e294fdffc23ee889af03b7cfc28.tar.gz |
Merge remote-tracking branch 'origin/stable/11' into devel-11
Diffstat (limited to 'libexec/rtld-elf/rtld.c')
-rw-r--r-- | libexec/rtld-elf/rtld.c | 50 |
1 files changed, 13 insertions, 37 deletions
diff --git a/libexec/rtld-elf/rtld.c b/libexec/rtld-elf/rtld.c index ca722cf..fe25e59 100644 --- a/libexec/rtld-elf/rtld.c +++ b/libexec/rtld-elf/rtld.c @@ -59,6 +59,7 @@ #include "paths.h" #include "rtld_tls.h" #include "rtld_printf.h" +#include "rtld_utrace.h" #include "notes.h" /* Types. */ @@ -273,29 +274,6 @@ char *ld_env_prefix = LD_; (dlp)->num_alloc = obj_count, \ (dlp)->num_used = 0) -#define UTRACE_DLOPEN_START 1 -#define UTRACE_DLOPEN_STOP 2 -#define UTRACE_DLCLOSE_START 3 -#define UTRACE_DLCLOSE_STOP 4 -#define UTRACE_LOAD_OBJECT 5 -#define UTRACE_UNLOAD_OBJECT 6 -#define UTRACE_ADD_RUNDEP 7 -#define UTRACE_PRELOAD_FINISHED 8 -#define UTRACE_INIT_CALL 9 -#define UTRACE_FINI_CALL 10 -#define UTRACE_DLSYM_START 11 -#define UTRACE_DLSYM_STOP 12 - -struct utrace_rtld { - char sig[4]; /* 'RTLD' */ - int event; - void *handle; - void *mapbase; /* Used for 'parent' and 'init/fini' */ - size_t mapsize; - int refcnt; /* Used for 'mode' */ - char name[MAXPATHLEN]; -}; - #define LD_UTRACE(e, h, mb, ms, r, n) do { \ if (ld_utrace != NULL) \ ld_utrace_log(e, h, mb, ms, r, n); \ @@ -306,11 +284,9 @@ ld_utrace_log(int event, void *handle, void *mapbase, size_t mapsize, int refcnt, const char *name) { struct utrace_rtld ut; + static const char rtld_utrace_sig[RTLD_UTRACE_SIG_SZ] = RTLD_UTRACE_SIG; - ut.sig[0] = 'R'; - ut.sig[1] = 'T'; - ut.sig[2] = 'L'; - ut.sig[3] = 'D'; + memcpy(ut.sig, rtld_utrace_sig, sizeof(ut.sig)); ut.event = event; ut.handle = handle; ut.mapbase = mapbase; @@ -1916,6 +1892,7 @@ static void init_rtld(caddr_t mapbase, Elf_Auxinfo **aux_info) { Obj_Entry objtmp; /* Temporary rtld object */ + const Elf_Ehdr *ehdr; const Elf_Dyn *dyn_rpath; const Elf_Dyn *dyn_soname; const Elf_Dyn *dyn_runpath; @@ -1954,6 +1931,9 @@ init_rtld(caddr_t mapbase, Elf_Auxinfo **aux_info) relocate_objects(&objtmp, true, &objtmp, 0, NULL); } + ehdr = (Elf_Ehdr *)mapbase; + objtmp.phdr = (Elf_Phdr *)((char *)mapbase + ehdr->e_phoff); + objtmp.phsize = ehdr->e_phnum * sizeof(objtmp.phdr[0]); /* Initialize the object list. */ TAILQ_INIT(&obj_list); @@ -2164,8 +2144,7 @@ load_needed_objects(Obj_Entry *first, int flags) { Obj_Entry *obj; - obj = first; - TAILQ_FOREACH_FROM(obj, &obj_list, next) { + for (obj = first; obj != NULL; obj = TAILQ_NEXT(obj, next)) { if (obj->marker) continue; if (process_needed(obj, obj->needed, flags) == -1) @@ -2769,9 +2748,8 @@ relocate_objects(Obj_Entry *first, bool bind_now, Obj_Entry *rtldobj, Obj_Entry *obj; int error; - error = 0; - obj = first; - TAILQ_FOREACH_FROM(obj, &obj_list, next) { + for (error = 0, obj = first; obj != NULL; + obj = TAILQ_NEXT(obj, next)) { if (obj->marker) continue; error = relocate_object(obj, bind_now, rtldobj, flags, @@ -2811,8 +2789,7 @@ resolve_objects_ifunc(Obj_Entry *first, bool bind_now, int flags, { Obj_Entry *obj; - obj = first; - TAILQ_FOREACH_FROM(obj, &obj_list, next) { + for (obj = first; obj != NULL; obj = TAILQ_NEXT(obj, next)) { if (obj->marker) continue; if (resolve_object_ifunc(obj, bind_now, flags, lockstate) == -1) @@ -4316,7 +4293,7 @@ trace_loaded_objects(Obj_Entry *obj) list_containers = getenv(_LD("TRACE_LOADED_OBJECTS_ALL")); - TAILQ_FOREACH_FROM(obj, &obj_list, next) { + for (; obj != NULL; obj = TAILQ_NEXT(obj, next)) { Needed_Entry *needed; char *name, *path; bool is_lib; @@ -4661,8 +4638,7 @@ allocate_tls(Obj_Entry *objs, void *oldtls, size_t tcbsize, size_t tcbalign) */ free_tls(oldtls, 2*sizeof(Elf_Addr), sizeof(Elf_Addr)); } else { - obj = objs; - TAILQ_FOREACH_FROM(obj, &obj_list, next) { + for (obj = objs; obj != NULL; obj = TAILQ_NEXT(obj, next)) { if (obj->marker || obj->tlsoffset == 0) continue; addr = segbase - obj->tlsoffset; |