diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2006-01-09 19:18:33 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-01-09 19:18:33 +0000 |
| commit | 0a3a98f6dd4e8f4d928a09302c0d1c56f2192ac3 (patch) | |
| tree | 92f55e374a84d06ce8213a4540454760fdecf137 /fs/binfmt_elf.c | |
| parent | 8ef12c9f01afba47c2d33bb939085111ca0d0f7d (diff) | |
| parent | 5367f2d67c7d0bf1faae90e6e7b4e2ac3c9b5e0f (diff) | |
Merge Linus' tree.
Diffstat (limited to 'fs/binfmt_elf.c')
| -rw-r--r-- | fs/binfmt_elf.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index f36f2210204..80ca932ba0b 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -58,7 +58,7 @@ extern int dump_fpu (struct pt_regs *, elf_fpregset_t *); * If we don't support core dumping, then supply a NULL so we * don't even try. */ -#ifdef USE_ELF_CORE_DUMP +#if defined(USE_ELF_CORE_DUMP) && defined(CONFIG_ELF_CORE) static int elf_core_dump(long signr, struct pt_regs * regs, struct file * file); #else #define elf_core_dump NULL @@ -288,11 +288,17 @@ static unsigned long elf_map(struct file *filep, unsigned long addr, struct elf_phdr *eppnt, int prot, int type) { unsigned long map_addr; + unsigned long pageoffset = ELF_PAGEOFFSET(eppnt->p_vaddr); down_write(¤t->mm->mmap_sem); - map_addr = do_mmap(filep, ELF_PAGESTART(addr), - eppnt->p_filesz + ELF_PAGEOFFSET(eppnt->p_vaddr), prot, type, - eppnt->p_offset - ELF_PAGEOFFSET(eppnt->p_vaddr)); + /* mmap() will return -EINVAL if given a zero size, but a + * segment with zero filesize is perfectly valid */ + if (eppnt->p_filesz + pageoffset) + map_addr = do_mmap(filep, ELF_PAGESTART(addr), + eppnt->p_filesz + pageoffset, prot, type, + eppnt->p_offset - pageoffset); + else + map_addr = ELF_PAGESTART(addr); up_write(¤t->mm->mmap_sem); return(map_addr); } @@ -1107,7 +1113,7 @@ out: * Note that some platforms still use traditional core dumps and not * the ELF core dump. Each platform can select it as appropriate. */ -#ifdef USE_ELF_CORE_DUMP +#if defined(USE_ELF_CORE_DUMP) && defined(CONFIG_ELF_CORE) /* * ELF core dumper |