diff options
Diffstat (limited to 'src/copy/segments.c')
| -rw-r--r-- | src/copy/segments.c | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/src/copy/segments.c b/src/copy/segments.c deleted file mode 100644 index 0f320c1..0000000 --- a/src/copy/segments.c +++ /dev/null @@ -1,163 +0,0 @@ -#include <stdio.h> - -#include <libelf.h> -#include <gelf.h> - -#include <libelfu/libelfu.h> - - - -void elfu_copySegments1(Elf *eo, Elf *ei) -{ - size_t i, n; - - if (elf_getphdrnum(ei, &n)) { - fprintf(stderr, "elf_getphdrnum() failed: %s\n", elf_errmsg(-1)); - } - - if (!gelf_newphdr(eo, n)) { - fprintf(stderr, "gelf_newphdr() failed: %s\n", elf_errmsg(-1)); - } - - for (i = 0; i < n; i++) { - GElf_Phdr phdr, phdrOut; - - if (gelf_getphdr(ei, i, &phdr) != &phdr) { - fprintf(stderr, "gelf_getphdr() failed for #%d: %s\n", i, elf_errmsg(-1)); - break; - } - - if (gelf_getphdr(eo, i, &phdrOut) != &phdrOut) { - fprintf(stderr, "gelf_getphdr() failed for #%d: %s\n", i, elf_errmsg(-1)); - break; - } - - phdrOut.p_type = phdr.p_type; - /* p_offset */ - phdrOut.p_vaddr = phdr.p_vaddr; - phdrOut.p_paddr = phdr.p_paddr; - /* p_filesz */ - /* p_memsz */ - phdrOut.p_flags = phdr.p_flags; - phdrOut.p_align = phdr.p_align; - - if (!gelf_update_phdr (eo, i, &phdrOut)) { - fprintf(stderr, "gelf_update_ehdr() failed: %s\n", elf_errmsg(-1)); - } - } - - /* Tell libelf that phdrs have changed */ - elf_flagphdr(eo, ELF_C_SET, ELF_F_DIRTY); -} - - -void elfu_copySegments2(Elf *eo, Elf *ei) -{ - size_t i, n; - - if (elf_getphdrnum(ei, &n)) { - fprintf(stderr, "elf_getphdrnum() failed: %s\n", elf_errmsg(-1)); - } - - for (i = 0; i < n; i++) { - GElf_Phdr phdr, phdrOut; - - if (gelf_getphdr(ei, i, &phdr) != &phdr) { - fprintf(stderr, "gelf_getphdr() failed for #%d: %s\n", i, elf_errmsg(-1)); - break; - } - - if (gelf_getphdr(eo, i, &phdrOut) != &phdrOut) { - fprintf(stderr, "gelf_getphdr() failed for #%d: %s\n", i, elf_errmsg(-1)); - break; - } - - /* Start of segment */ - if (phdr.p_type == PT_PHDR) { - /* Skip PHDR entries and fix them up later */ - } - else if (phdr.p_offset == 0) { - /* The text segment usually loads the whole ELF header */ - phdrOut.p_offset = 0; - } else { - /* Try to guess the start of the segment */ - Elf_Scn *scn, *scnOut; - GElf_Shdr shdr, shdrOut; - - scn = elfu_firstSectionInSegment(ei, &phdr); - if (!scn) { - fprintf(stderr, "elfu_firstSectionInSegment() failed for segment #%d\n", i); - continue; - } - - if (gelf_getshdr(scn, &shdr) != &shdr) { - fprintf(stderr, "gelf_getshdr() failed: %s\n", elf_errmsg(-1)); - } - - if (phdr.p_offset < shdr.sh_offset) { - fprintf(stderr, "elfu_copySegments2: Segment #%d starts before first contained section.\n", i); - } - - scnOut = elf_getscn(eo, elf_ndxscn(scn)); - if (!scnOut) { - fprintf(stderr, "elf_getscn() failed: %s\n", elf_errmsg(-1)); - } - - if (gelf_getshdr(scnOut, &shdrOut) != &shdrOut) { - fprintf(stderr, "gelf_getshdr() failed: %s\n", elf_errmsg(-1)); - } - - phdrOut.p_offset = shdrOut.sh_offset; - } - - /* File length of segment */ - if (phdr.p_type == PT_PHDR) { - /* Skip PHDR entries and fix them up later */ - } - else if (phdr.p_memsz == 0) { - phdrOut.p_filesz = 0; - phdrOut.p_memsz = 0; - } else { - /* Try to guess the end of the segment */ - Elf_Scn *scn, *scnOut; - GElf_Shdr shdr, shdrOut; - - scn = elfu_lastSectionInSegment(ei, &phdr); - if (!scn) { - fprintf(stderr, "elfu_lastSectionInSegment() failed for segment #%d\n", i); - continue; - } - - if (gelf_getshdr(scn, &shdr) != &shdr) { - fprintf(stderr, "gelf_getshdr() failed: %s\n", elf_errmsg(-1)); - } - - if (phdr.p_offset + phdr.p_filesz > shdr.sh_offset + shdr.sh_size) { - fprintf(stderr, "elfu_copySegments2: Segment #%d ends after last contained section.\n", i); - } - - scnOut = elf_getscn(eo, elf_ndxscn(scn)); - if (!scnOut) { - fprintf(stderr, "elf_getscn() failed: %s\n", elf_errmsg(-1)); - } - - if (gelf_getshdr(scnOut, &shdrOut) != &shdrOut) { - fprintf(stderr, "gelf_getshdr() failed: %s\n", elf_errmsg(-1)); - } - - phdrOut.p_filesz = shdrOut.sh_offset - phdrOut.p_offset; - if (shdrOut.sh_type != SHT_NOBITS) { - phdrOut.p_filesz += shdrOut.sh_size; - } - - phdrOut.p_memsz = shdrOut.sh_offset - phdrOut.p_offset + shdrOut.sh_size; - } - - if (!gelf_update_phdr (eo, i, &phdrOut)) { - fprintf(stderr, "gelf_update_ehdr() failed: %s\n", elf_errmsg(-1)); - } - } - - /* Tell libelf that phdrs have changed */ - elf_flagphdr(eo, ELF_C_SET, ELF_F_DIRTY); -} |