mirror of
https://github.com/torvalds/linux.git
synced 2024-09-20 06:53:04 +00:00
295f10061a
Most architectures that implement the old-style mmap() with byte offset use 'unsigned long' as the type for that offset, but microblaze and riscv have the off_t type that is shared with userspace, matching the prototype in include/asm-generic/syscalls.h. Make this consistent by using an unsigned argument everywhere. This changes the behavior slightly, as the argument is shifted to a page number, and an user input with the top bit set would result in a negative page offset rather than a large one as we use elsewhere. For riscv, the 32-bit sys_mmap2() definition actually used a custom type that is different from the global declaration, but this was missed due to an incorrect type check. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
30 lines
745 B
C
30 lines
745 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __ASM_GENERIC_SYSCALLS_H
|
|
#define __ASM_GENERIC_SYSCALLS_H
|
|
|
|
#include <linux/compiler.h>
|
|
#include <linux/linkage.h>
|
|
|
|
/*
|
|
* Calling conventions for these system calls can differ, so
|
|
* it's possible to override them.
|
|
*/
|
|
|
|
#ifndef sys_mmap2
|
|
asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
|
|
unsigned long prot, unsigned long flags,
|
|
unsigned long fd, unsigned long pgoff);
|
|
#endif
|
|
|
|
#ifndef sys_mmap
|
|
asmlinkage long sys_mmap(unsigned long addr, unsigned long len,
|
|
unsigned long prot, unsigned long flags,
|
|
unsigned long fd, unsigned long off);
|
|
#endif
|
|
|
|
#ifndef sys_rt_sigreturn
|
|
asmlinkage long sys_rt_sigreturn(struct pt_regs *regs);
|
|
#endif
|
|
|
|
#endif /* __ASM_GENERIC_SYSCALLS_H */
|