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Avoid crashing in LD_DEBUG when program name is unavailable

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Resolves: #15465

The program name may be unavailable if the user application tampers
with argc and argv[].  Some parts of the dynamic linker caters for
this while others don't, so this patch consolidates the check and
fallback into a single macro and updates all users.
This commit is contained in:
Siddhesh Poyarekar
2013-05-29 21:30:20 +05:30
parent d0501bfbe2
commit b937534868
41 changed files with 220 additions and 103 deletions
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3
sysdeps/sparc/sparc32/dl-machine.h
View File

@ -411,8 +411,7 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
strtab = (const void *) D_PTR (map, l_info[DT_STRTAB]);
_dl_error_printf ("\
%s: Symbol `%s' has different size in shared object, consider re-linking\n",
rtld_progname ?: "<program name unknown>",
strtab + refsym->st_name);
RTLD_PROGNAME, strtab + refsym->st_name);
}
memcpy (reloc_addr_arg, (void *) value,
MIN (sym->st_size, refsym->st_size));

3
sysdeps/sparc/sparc64/dl-machine.h
View File

@ -436,8 +436,7 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc,
strtab = (const void *) D_PTR (map, l_info[DT_STRTAB]);
_dl_error_printf ("\
%s: Symbol `%s' has different size in shared object, consider re-linking\n",
rtld_progname ?: "<program name unknown>",
strtab + refsym->st_name);
RTLD_PROGNAME, strtab + refsym->st_name);
}
memcpy (reloc_addr_arg, (void *) value,
MIN (sym->st_size, refsym->st_size));