Commit a5454f95 authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Andrew Morton
Browse files

tmpfs: ensure O_LARGEFILE with generic_file_open() 

Without this check open() will open large files on tmpfs although
O_LARGEFILE was not specified.  This is inconsistent with other
filesystems.  Also it will later result in EOVERFLOW on stat() or EFBIG on
write().

Link: https://lore.kernel.org/lkml/76bedae6-22ea-4abc-8c06-b424ceb39217@t-8ch.de/
Link: https://lkml.kernel.org/r/20220928104535.61186-1-linux@weissschuh.net


Signed-off-by: default avatarThomas Weißschuh <thomas.weissschuh@amadeus.com>
Acked-by: default avatarHugh Dickins <hughd@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 7848ed62

mm/shmem.c

+1 −0
Original line number Diff line number Diff line
@@ -3902,6 +3902,7 @@ EXPORT_SYMBOL(shmem_aops); 


static const struct file_operations shmem_file_operations = {

	.mmap		= shmem_mmap,

	.open		= generic_file_open,

	.get_unmapped_area = shmem_get_unmapped_area,

#ifdef CONFIG_TMPFS

	.llseek		= shmem_file_llseek,