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- Upstream-Status: Inappropriate [embedded specific]
- We run the ldconfig in the cross fashion. make the code bitsize aware so that
- we can cross build ldconfig cache for various architectures.
- Richard Purdie <richard.purdie@linuxfoundation.org> 2009/05/19
- Nitin A Kamble <nitin.a.kamble@intel.com> 2009/03/29
- Index: ldconfig-native-2.12.1/readelflib.c
- ===================================================================
- --- ldconfig-native-2.12.1.orig/readelflib.c
- +++ ldconfig-native-2.12.1/readelflib.c
- @@ -40,39 +40,212 @@ do \
-
- /* Returns 0 if everything is ok, != 0 in case of error. */
- int
- -process_elf_file (const char *file_name, const char *lib, int *flag,
- +process_elf_file32 (const char *file_name, const char *lib, int *flag,
- unsigned int *osversion, char **soname, void *file_contents,
- size_t file_length)
- {
- int i;
- unsigned int j;
- - ElfW(Addr) loadaddr;
- + Elf32_Addr loadaddr;
- unsigned int dynamic_addr;
- size_t dynamic_size;
- char *program_interpreter;
-
- - ElfW(Ehdr) *elf_header;
- - ElfW(Phdr) *elf_pheader, *segment;
- - ElfW(Dyn) *dynamic_segment, *dyn_entry;
- + Elf32_Ehdr *elf_header;
- + Elf32_Phdr *elf_pheader, *segment;
- + Elf32_Dyn *dynamic_segment, *dyn_entry;
- char *dynamic_strings;
-
- - elf_header = (ElfW(Ehdr) *) file_contents;
- + elf_header = (Elf32_Ehdr *) file_contents;
- *osversion = 0;
-
- - if (elf_header->e_ident [EI_CLASS] != ElfW (CLASS))
- + if (elf_header->e_type != ET_DYN)
- {
- - if (opt_verbose)
- + error (0, 0, _("%s is not a shared object file (Type: %d).\n"), file_name,
- + elf_header->e_type);
- + return 1;
- + }
- +
- + /* Get information from elf program header. */
- + elf_pheader = (Elf32_Phdr *) (elf_header->e_phoff + file_contents);
- + check_ptr (elf_pheader);
- +
- + /* The library is an elf library, now search for soname and
- + libc5/libc6. */
- + *flag = FLAG_ELF;
- +
- + loadaddr = -1;
- + dynamic_addr = 0;
- + dynamic_size = 0;
- + program_interpreter = NULL;
- + for (i = 0, segment = elf_pheader;
- + i < elf_header->e_phnum; i++, segment++)
- + {
- + check_ptr (segment);
- +
- + switch (segment->p_type)
- {
- - if (elf_header->e_ident [EI_CLASS] == ELFCLASS32)
- - error (0, 0, _("%s is a 32 bit ELF file.\n"), file_name);
- - else if (elf_header->e_ident [EI_CLASS] == ELFCLASS64)
- - error (0, 0, _("%s is a 64 bit ELF file.\n"), file_name);
- - else
- - error (0, 0, _("Unknown ELFCLASS in file %s.\n"), file_name);
- + case PT_LOAD:
- + if (loadaddr == (Elf32_Addr) -1)
- + loadaddr = segment->p_vaddr - segment->p_offset;
- + break;
- +
- + case PT_DYNAMIC:
- + if (dynamic_addr)
- + error (0, 0, _("more than one dynamic segment\n"));
- +
- + dynamic_addr = segment->p_offset;
- + dynamic_size = segment->p_filesz;
- + break;
- +
- + case PT_INTERP:
- + program_interpreter = (char *) (file_contents + segment->p_offset);
- + check_ptr (program_interpreter);
- +
- + /* Check if this is enough to classify the binary. */
- + for (j = 0; j < sizeof (interpreters) / sizeof (interpreters [0]);
- + ++j)
- + if (strcmp (program_interpreter, interpreters[j].soname) == 0)
- + {
- + *flag = interpreters[j].flag;
- + break;
- + }
- + break;
- +
- + case PT_NOTE:
- + if (!*osversion && segment->p_filesz >= 32 && segment->p_align >= 4)
- + {
- + Elf32_Word *abi_note = (Elf32_Word *) (file_contents
- + + segment->p_offset);
- + Elf32_Addr size = segment->p_filesz;
- +
- + while (abi_note [0] != 4 || abi_note [1] != 16
- + || abi_note [2] != 1
- + || memcmp (abi_note + 3, "GNU", 4) != 0)
- + {
- +#define ROUND(len) (((len) + sizeof (Elf32_Word)) - 1) & -sizeof (Elf32_Word)))
- + Elf32_Addr) note_size = 3 * sizeof (Elf32_Word))
- + + ROUND (abi_note[0])
- + + ROUND (abi_note[1]);
- +
- + if (size - 32 < note_size || note_size == 0)
- + {
- + size = 0;
- + break;
- + }
- + size -= note_size;
- + abi_note = (void *) abi_note + note_size;
- + }
- +
- + if (size == 0)
- + break;
- +
- + *osversion = (abi_note [4] << 24) |
- + ((abi_note [5] & 0xff) << 16) |
- + ((abi_note [6] & 0xff) << 8) |
- + (abi_note [7] & 0xff);
- + }
- + break;
- +
- + default:
- + break;
- + }
- +
- + }
- + if (loadaddr == (Elf32_Addr) -1)
- + {
- + /* Very strange. */
- + loadaddr = 0;
- + }
- +
- + /* Now we can read the dynamic sections. */
- + if (dynamic_size == 0)
- + return 1;
- +
- + dynamic_segment = (Elf32_Dyn *) (file_contents + dynamic_addr);
- + check_ptr (dynamic_segment);
- +
- + /* Find the string table. */
- + dynamic_strings = NULL;
- + for (dyn_entry = dynamic_segment; dyn_entry->d_tag != DT_NULL;
- + ++dyn_entry)
- + {
- + check_ptr (dyn_entry);
- + if (dyn_entry->d_tag == DT_STRTAB)
- + {
- + dynamic_strings = (char *) (file_contents + dyn_entry->d_un.d_val - loadaddr);
- + check_ptr (dynamic_strings);
- + break;
- }
- - return 1;
- }
-
- + if (dynamic_strings == NULL)
- + return 1;
- +
- + /* Now read the DT_NEEDED and DT_SONAME entries. */
- + for (dyn_entry = dynamic_segment; dyn_entry->d_tag != DT_NULL;
- + ++dyn_entry)
- + {
- + if (dyn_entry->d_tag == DT_NEEDED || dyn_entry->d_tag == DT_SONAME)
- + {
- + char *name = dynamic_strings + dyn_entry->d_un.d_val;
- + check_ptr (name);
- +
- + if (dyn_entry->d_tag == DT_NEEDED)
- + {
- +
- + if (*flag == FLAG_ELF)
- + {
- + /* Check if this is enough to classify the binary. */
- + for (j = 0;
- + j < sizeof (known_libs) / sizeof (known_libs [0]);
- + ++j)
- + if (strcmp (name, known_libs [j].soname) == 0)
- + {
- + *flag = known_libs [j].flag;
- + break;
- + }
- + }
- + }
- +
- + else if (dyn_entry->d_tag == DT_SONAME)
- + *soname = xstrdup (name);
- +
- + /* Do we have everything we need? */
- + if (*soname && *flag != FLAG_ELF)
- + return 0;
- + }
- + }
- +
- + /* We reach this point only if the file doesn't contain a DT_SONAME
- + or if we can't classify the library. If it doesn't have a
- + soname, return the name of the library. */
- + if (*soname == NULL)
- + *soname = xstrdup (lib);
- +
- + return 0;
- +}
- +
- +int
- +process_elf_file64 (const char *file_name, const char *lib, int *flag,
- + unsigned int *osversion, char **soname, void *file_contents,
- + size_t file_length)
- +{
- + int i;
- + unsigned int j;
- + Elf64_Addr loadaddr;
- + unsigned int dynamic_addr;
- + size_t dynamic_size;
- + char *program_interpreter;
- +
- + Elf64_Ehdr *elf_header;
- + Elf64_Phdr *elf_pheader, *segment;
- + Elf64_Dyn *dynamic_segment, *dyn_entry;
- + char *dynamic_strings;
- +
- + elf_header = (Elf64_Ehdr *) file_contents;
- + *osversion = 0;
- +
- if (elf_header->e_type != ET_DYN)
- {
- error (0, 0, _("%s is not a shared object file (Type: %d).\n"), file_name,
- @@ -81,7 +254,7 @@ process_elf_file (const char *file_name,
- }
-
- /* Get information from elf program header. */
- - elf_pheader = (ElfW(Phdr) *) (elf_header->e_phoff + file_contents);
- + elf_pheader = (Elf64_Phdr *) (elf_header->e_phoff + file_contents);
- check_ptr (elf_pheader);
-
- /* The library is an elf library, now search for soname and
- @@ -100,7 +273,7 @@ process_elf_file (const char *file_name,
- switch (segment->p_type)
- {
- case PT_LOAD:
- - if (loadaddr == (ElfW(Addr)) -1)
- + if (loadaddr == (Elf64_Addr) -1)
- loadaddr = segment->p_vaddr - segment->p_offset;
- break;
-
- @@ -129,16 +302,16 @@ process_elf_file (const char *file_name,
- case PT_NOTE:
- if (!*osversion && segment->p_filesz >= 32 && segment->p_align >= 4)
- {
- - ElfW(Word) *abi_note = (ElfW(Word) *) (file_contents
- + Elf64_Word *abi_note = (Elf64_Word *) (file_contents
- + segment->p_offset);
- - ElfW(Addr) size = segment->p_filesz;
- + Elf64_Addr size = segment->p_filesz;
-
- while (abi_note [0] != 4 || abi_note [1] != 16
- || abi_note [2] != 1
- || memcmp (abi_note + 3, "GNU", 4) != 0)
- {
- -#define ROUND(len) (((len) + sizeof (ElfW(Word)) - 1) & -sizeof (ElfW(Word)))
- - ElfW(Addr) note_size = 3 * sizeof (ElfW(Word))
- +#define ROUND(len) (((len) + sizeof (Elf64_Word) - 1) & -sizeof (Elf64_Word))
- + Elf64_Addr note_size = 3 * sizeof (Elf64_Word)
- + ROUND (abi_note[0])
- + ROUND (abi_note[1]);
-
- @@ -166,7 +339,7 @@ process_elf_file (const char *file_name,
- }
-
- }
- - if (loadaddr == (ElfW(Addr)) -1)
- + if (loadaddr == (Elf64_Addr) -1)
- {
- /* Very strange. */
- loadaddr = 0;
- @@ -176,7 +349,7 @@ process_elf_file (const char *file_name,
- if (dynamic_size == 0)
- return 1;
-
- - dynamic_segment = (ElfW(Dyn) *) (file_contents + dynamic_addr);
- + dynamic_segment = (Elf64_Dyn *) (file_contents + dynamic_addr);
- check_ptr (dynamic_segment);
-
- /* Find the string table. */
- @@ -233,3 +406,33 @@ process_elf_file (const char *file_name,
-
- return 0;
- }
- +/* Returns 0 if everything is ok, != 0 in case of error. */
- +int
- +process_elf_file (const char *file_name, const char *lib, int *flag,
- + unsigned int *osversion, char **soname, void *file_contents,
- + size_t file_length)
- +{
- + int i;
- + unsigned int j;
- + ElfW(Addr) loadaddr;
- + unsigned int dynamic_addr;
- + size_t dynamic_size;
- + char *program_interpreter;
- +
- + ElfW(Ehdr) *elf_header;
- + ElfW(Phdr) *elf_pheader, *segment;
- + ElfW(Dyn) *dynamic_segment, *dyn_entry;
- + char *dynamic_strings;
- +
- + elf_header = (ElfW(Ehdr) *) file_contents;
- + *osversion = 0;
- +
- + if (elf_header->e_ident [EI_CLASS] == ELFCLASS32)
- + return process_elf_file32(file_name, lib,flag, osversion, soname, file_contents, file_length);
- + else if (elf_header->e_ident [EI_CLASS] == ELFCLASS64)
- + return process_elf_file64(file_name, lib,flag, osversion, soname, file_contents, file_length);
- + error (0, 0, _("Unknown ELFCLASS in file %s.\n"), file_name);
- + return 1;
- +}
- +
- +
|