Commit 36027604 authored by Magnus Damm's avatar Magnus Damm Committed by Linus Torvalds

[PATCH] elf: fix kcore note size calculation

 - Define "CORE" string as CORE_STR in single common place.
 - Include terminating zero in CORE_STR length calculation for elf_buflen.
 - Use roundup(,4) to include alignment in elf_buflen calculation.

[akpm@osdl.org: simplification suggested by Roland]
Signed-off-by: default avatarMagnus Damm <magnus@valinux.co.jp>
Cc: Daniel Jacobowitz <drow@false.org>
Cc: Roland McGrath <roland@redhat.com>
Cc: Jakub Jelinek <jakub@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 584236ac
......@@ -22,6 +22,7 @@
#include <asm/uaccess.h>
#include <asm/io.h>
#define CORE_STR "CORE"
static int open_kcore(struct inode * inode, struct file * filp)
{
......@@ -82,10 +83,11 @@ static size_t get_kcore_size(int *nphdr, size_t *elf_buflen)
}
*elf_buflen = sizeof(struct elfhdr) +
(*nphdr + 2)*sizeof(struct elf_phdr) +
3 * (sizeof(struct elf_note) + 4) +
sizeof(struct elf_prstatus) +
sizeof(struct elf_prpsinfo) +
sizeof(struct task_struct);
3 * ((sizeof(struct elf_note)) +
roundup(sizeof(CORE_STR), 4)) +
roundup(sizeof(struct elf_prstatus), 4) +
roundup(sizeof(struct elf_prpsinfo), 4) +
roundup(sizeof(struct task_struct), 4);
*elf_buflen = PAGE_ALIGN(*elf_buflen);
return size + *elf_buflen;
}
......@@ -210,7 +212,7 @@ static void elf_kcore_store_hdr(char *bufp, int nphdr, int dataoff)
nhdr->p_offset = offset;
/* set up the process status */
notes[0].name = "CORE";
notes[0].name = CORE_STR;
notes[0].type = NT_PRSTATUS;
notes[0].datasz = sizeof(struct elf_prstatus);
notes[0].data = &prstatus;
......@@ -221,7 +223,7 @@ static void elf_kcore_store_hdr(char *bufp, int nphdr, int dataoff)
bufp = storenote(&notes[0], bufp);
/* set up the process info */
notes[1].name = "CORE";
notes[1].name = CORE_STR;
notes[1].type = NT_PRPSINFO;
notes[1].datasz = sizeof(struct elf_prpsinfo);
notes[1].data = &prpsinfo;
......@@ -238,7 +240,7 @@ static void elf_kcore_store_hdr(char *bufp, int nphdr, int dataoff)
bufp = storenote(&notes[1], bufp);
/* set up the task structure */
notes[2].name = "CORE";
notes[2].name = CORE_STR;
notes[2].type = NT_TASKSTRUCT;
notes[2].datasz = sizeof(struct task_struct);
notes[2].data = current;
......
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