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compat: move FS_IOC_RESVSP_32 handling to fs/ioctl.c

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... and lose the ridiculous games with compat_alloc_user_space()
there.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Al Viro
2019-04-21 19:24:03 -04:00
committed by Arnd Bergmann
parent 34d3d0e65e
commit 011da44bc5
3 changed files with 49 additions and 35 deletions
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20
include/linux/falloc.h
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@@ -29,4 +29,24 @@ struct space_resv {
FALLOC_FL_INSERT_RANGE | \
FALLOC_FL_UNSHARE_RANGE)
/* on ia32 l_start is on a 32-bit boundary */
#if defined(CONFIG_X86_64)
struct space_resv_32 {
__s16 l_type;
__s16 l_whence;
__s64 l_start __attribute__((packed));
/* len == 0 means until end of file */
__s64 l_len __attribute__((packed));
__s32 l_sysid;
__u32 l_pid;
__s32 l_pad[4]; /* reserve area */
};
#define FS_IOC_RESVSP_32 _IOW ('X', 40, struct space_resv_32)
#define FS_IOC_RESVSP64_32 _IOW ('X', 42, struct space_resv_32)
int compat_ioctl_preallocate(struct file *, struct space_resv_32 __user *);
#endif
#endif /* _FALLOC_H_ */