diff options
Diffstat (limited to 'meta/recipes-core/glibc/ldconfig-native-2.12.1/ldconfig-handle-.dynstr-located-in-separate-segment.patch')
| -rw-r--r-- | meta/recipes-core/glibc/ldconfig-native-2.12.1/ldconfig-handle-.dynstr-located-in-separate-segment.patch | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/meta/recipes-core/glibc/ldconfig-native-2.12.1/ldconfig-handle-.dynstr-located-in-separate-segment.patch b/meta/recipes-core/glibc/ldconfig-native-2.12.1/ldconfig-handle-.dynstr-located-in-separate-segment.patch new file mode 100644 index 0000000000..36f04adfde --- /dev/null +++ b/meta/recipes-core/glibc/ldconfig-native-2.12.1/ldconfig-handle-.dynstr-located-in-separate-segment.patch @@ -0,0 +1,178 @@ +From 864054a6cb971688a181316b8227ae0361b4d69e Mon Sep 17 00:00:00 2001 +From: Andreas Schwab <schwab@suse.de> +Date: Wed, 9 Oct 2019 17:46:47 +0200 +Subject: [PATCH] ldconfig: handle .dynstr located in separate segment (bug + 25087) + +To determine the load offset of the DT_STRTAB section search for the +segment containing it, instead of using the load offset of the first +segment. + +Upstream-Status: Backport [https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=58e8f5fd2ba47b6dc47fd4d0a35e4175c7c87aaa] + +Backported: ported to support endianness and 32/64 bits. +Signed-off-by: Fabien Mahot <fabien.mahot@external.desouttertools.com> +--- + readelflib.c | 86 +++++++++++++++++++++++++++++++--------------------- + 1 file changed, 52 insertions(+), 34 deletions(-) + +diff --git a/readelflib.c b/readelflib.c +index a01e1cede3..380aed563d 100644 +--- a/readelflib.c ++++ b/readelflib.c +@@ -80,7 +80,6 @@ process_elf_file32 (const char *file_name, const char *lib, int *flag, + { + int i; + unsigned int j; +- Elf32_Addr loadaddr; + unsigned int dynamic_addr; + size_t dynamic_size; + char *program_interpreter; +@@ -110,7 +109,6 @@ process_elf_file32 (const char *file_name, const char *lib, int *flag, + libc5/libc6. */ + *flag = FLAG_ELF; + +- loadaddr = -1; + dynamic_addr = 0; + dynamic_size = 0; + program_interpreter = NULL; +@@ -121,11 +119,6 @@ process_elf_file32 (const char *file_name, const char *lib, int *flag, + + switch (read32(segment->p_type, be)) + { +- case PT_LOAD: +- if (loadaddr == (Elf32_Addr) -1) +- loadaddr = read32(segment->p_vaddr, be) - read32(segment->p_offset, be); +- break; +- + case PT_DYNAMIC: + if (dynamic_addr) + error (0, 0, _("more than one dynamic segment\n")); +@@ -188,11 +181,6 @@ process_elf_file32 (const char *file_name, const char *lib, int *flag, + } + + } +- if (loadaddr == (Elf32_Addr) -1) +- { +- /* Very strange. */ +- loadaddr = 0; +- } + + /* Now we can read the dynamic sections. */ + if (dynamic_size == 0) +@@ -208,11 +196,32 @@ process_elf_file32 (const char *file_name, const char *lib, int *flag, + { + check_ptr (dyn_entry); + if (read32(dyn_entry->d_tag, be) == DT_STRTAB) +- { +- dynamic_strings = (char *) (file_contents + read32(dyn_entry->d_un.d_val, be) - loadaddr); +- check_ptr (dynamic_strings); +- break; +- } ++ { ++ /* Find the file offset of the segment containing the dynamic ++ string table. */ ++ Elf32_Off loadoff = -1; ++ for (i = 0, segment = elf_pheader; ++ i < read16(elf_header->e_phnum, be); i++, segment++) ++ { ++ if (read32(segment->p_type, be) == PT_LOAD ++ && read32(dyn_entry->d_un.d_val, be) >= read32(segment->p_vaddr, be) ++ && (read32(dyn_entry->d_un.d_val, be) - read32(segment->p_vaddr, be) ++ < read32(segment->p_filesz, be))) ++ { ++ loadoff = read32(segment->p_vaddr, be) - read32(segment->p_offset, be); ++ break; ++ } ++ } ++ if (loadoff == (Elf32_Off) -1) ++ { ++ /* Very strange. */ ++ loadoff = 0; ++ } ++ ++ dynamic_strings = (char *) (file_contents + read32(dyn_entry->d_un.d_val, be) - loadoff); ++ check_ptr (dynamic_strings); ++ break; ++ } + } + + if (dynamic_strings == NULL) +@@ -269,7 +278,6 @@ process_elf_file64 (const char *file_name, const char *lib, int *flag, + { + int i; + unsigned int j; +- Elf64_Addr loadaddr; + Elf64_Addr dynamic_addr; + Elf64_Xword dynamic_size; + char *program_interpreter; +@@ -347,7 +355,6 @@ process_elf_file64 (const char *file_name, const char *lib, int *flag, + break; + } + +- loadaddr = -1; + dynamic_addr = 0; + dynamic_size = 0; + program_interpreter = NULL; +@@ -358,11 +365,6 @@ process_elf_file64 (const char *file_name, const char *lib, int *flag, + + switch (read32(segment->p_type, be)) + { +- case PT_LOAD: +- if (loadaddr == (Elf64_Addr) -1) +- loadaddr = read64(segment->p_vaddr, be) - read64(segment->p_offset, be); +- break; +- + case PT_DYNAMIC: + if (dynamic_addr) + error (0, 0, _("more than one dynamic segment\n")); +@@ -426,11 +428,6 @@ process_elf_file64 (const char *file_name, const char *lib, int *flag, + } + + } +- if (loadaddr == (Elf64_Addr) -1) +- { +- /* Very strange. */ +- loadaddr = 0; +- } + + /* Now we can read the dynamic sections. */ + if (dynamic_size == 0) +@@ -446,11 +443,32 @@ process_elf_file64 (const char *file_name, const char *lib, int *flag, + { + check_ptr (dyn_entry); + if (read64(dyn_entry->d_tag, be) == DT_STRTAB) +- { +- dynamic_strings = (char *) (file_contents + read64(dyn_entry->d_un.d_val, be) - loadaddr); +- check_ptr (dynamic_strings); +- break; +- } ++ { ++ /* Find the file offset of the segment containing the dynamic ++ string table. */ ++ Elf64_Off loadoff = -1; ++ for (i = 0, segment = elf_pheader; ++ i < read16(elf_header->e_phnum, be); i++, segment++) ++ { ++ if (read64(segment->p_type, be) == PT_LOAD ++ && read64(dyn_entry->d_un.d_val, be) >= read64(segment->p_vaddr, be) ++ && (read64(dyn_entry->d_un.d_val, be) - read64(segment->p_vaddr, be) ++ < read64(segment->p_filesz, be))) ++ { ++ loadoff = read64(segment->p_vaddr, be) - read64(segment->p_offset, be); ++ break; ++ } ++ } ++ if (loadoff == (Elf32_Off) -1) ++ { ++ /* Very strange. */ ++ loadoff = 0; ++ } ++ ++ dynamic_strings = (char *) (file_contents + read64(dyn_entry->d_un.d_val, be) - loadoff); ++ check_ptr (dynamic_strings); ++ break; ++ } + } + + if (dynamic_strings == NULL) |