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Viewing changes to elf_core.c

  • Committer: Scott James Remnant
  • Date: 2009-07-16 15:24:17 UTC
  • mfrom: (152.1.38)
  • Revision ID: scott@netsplit.com-20090716152417-7ak1sklxb59cs4fz
Merge 3.10

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Lines of Context:
elf_core.c
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void *PERBIT(get_section)(void *file,
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                          unsigned long fsize,
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                          const char *secname,
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                          unsigned long *secsize,
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                          int conv)
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{
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        ElfPERBIT(Ehdr) *hdr;
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        ElfPERBIT(Shdr) *sechdrs;
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        ElfPERBIT(Off) e_shoff;
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        ElfPERBIT(Half) e_shnum, e_shstrndx;
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        const char *secnames;
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        unsigned int i;
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        if (fsize > 0 && fsize < sizeof(*hdr))
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                return NULL;
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        hdr = file;
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        e_shoff = END(hdr->e_shoff, conv);
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        e_shnum = END(hdr->e_shnum, conv);
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        e_shstrndx = END(hdr->e_shstrndx, conv);
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        if (fsize > 0 && fsize < e_shoff + e_shnum * sizeof(sechdrs[0]))
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                return NULL;
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        sechdrs = file + e_shoff;
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        if (fsize > 0 && fsize < END(sechdrs[e_shstrndx].sh_offset, conv))
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                return NULL;
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        /* Find section by name, return pointer and size. */
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        secnames = file + END(sechdrs[e_shstrndx].sh_offset, conv);
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        for (i = 1; i < e_shnum; i++) {
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                if (streq(secnames + END(sechdrs[i].sh_name, conv), secname)) {
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                        *secsize = END(sechdrs[i].sh_size, conv);
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                        return file + END(sechdrs[i].sh_offset, conv);
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                }
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        }
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        *secsize = 0;
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        return NULL;
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}
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