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Differential D22634 Diff 65554 head/libexec/rtld-elf/map_object.c

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head/libexec/rtld-elf/map_object.c

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for (i = 0; i <= nsegs; i++) { for (i = 0; i <= nsegs; i++) {
/* Overlay the segment onto the proper region. */ /* Overlay the segment onto the proper region. */
data_offset = trunc_page(segs[i]->p_offset); data_offset = trunc_page(segs[i]->p_offset);
data_vaddr = trunc_page(segs[i]->p_vaddr); data_vaddr = trunc_page(segs[i]->p_vaddr);
data_vlimit = round_page(segs[i]->p_vaddr + segs[i]->p_filesz); data_vlimit = round_page(segs[i]->p_vaddr + segs[i]->p_filesz);
data_addr = mapbase + (data_vaddr - base_vaddr); data_addr = mapbase + (data_vaddr - base_vaddr);
data_prot = convert_prot(segs[i]->p_flags); data_prot = convert_prot(segs[i]->p_flags);
data_flags = convert_flags(segs[i]->p_flags) | MAP_FIXED; data_flags = convert_flags(segs[i]->p_flags) | MAP_FIXED;
if (mmap(data_addr, data_vlimit - data_vaddr, data_prot, if (data_vlimit != data_vaddr &&
data_flags | MAP_PREFAULT_READ, fd, data_offset) == (caddr_t) -1) { mmap(data_addr, data_vlimit - data_vaddr, data_prot,
data_flags | MAP_PREFAULT_READ, fd, data_offset) == MAP_FAILED) {
_rtld_error("%s: mmap of data failed: %s", path, _rtld_error("%s: mmap of data failed: %s", path,
rtld_strerror(errno)); rtld_strerror(errno));
goto error1; goto error1;
} }
/* Do BSS setup */ /* Do BSS setup */
if (segs[i]->p_filesz != segs[i]->p_memsz) { if (segs[i]->p_filesz != segs[i]->p_memsz) {
/* Clear any BSS in the last page of the segment. */ /* Clear any BSS in the last page of the segment. */
clear_vaddr = segs[i]->p_vaddr + segs[i]->p_filesz; clear_vaddr = segs[i]->p_vaddr + segs[i]->p_filesz;
clear_addr = mapbase + (clear_vaddr - base_vaddr); clear_addr = mapbase + (clear_vaddr - base_vaddr);
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