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Use getpagesize in gcore to find the page size

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Reviewed by:	markj
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D35194
This commit is contained in:
Andrew Turner 2022-05-13 12:56:14 +01:00
parent 88ac318759
commit f9ca52bab5
1 changed files with 5 additions and 3 deletions
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8
usr.bin/gcore/elfcore.c
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@ -234,7 +234,7 @@ elf_coredump(int efd, int fd, pid_t pid)
/* Put notes. */
elf_putnotes(pid, sb, &notesz);
/* Align up to a page boundary for the program segments. */
sbuf_end_section(sb, -1, PAGE_SIZE, 0);
sbuf_end_section(sb, -1, getpagesize(), 0);
if (sbuf_finish(sb) != 0)
err(1, "sbuf_finish");
hdr = sbuf_data(sb);
@ -295,15 +295,17 @@ cb_put_phdr(struct map_entry *entry, void *closure)
{
struct phdr_closure *phc = (struct phdr_closure *)closure;
Elf_Phdr *phdr = phc->phdr;
size_t page_size;
phc->offset = round_page(phc->offset);
page_size = getpagesize();
phc->offset = roundup2(phc->offset, page_size);
phdr->p_type = PT_LOAD;
phdr->p_offset = phc->offset;
phdr->p_vaddr = entry->start;
phdr->p_paddr = 0;
phdr->p_filesz = phdr->p_memsz = entry->end - entry->start;
phdr->p_align = PAGE_SIZE;
phdr->p_align = page_size;
phdr->p_flags = 0;
if (entry->protection & VM_PROT_READ)
phdr->p_flags |= PF_R;