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linux-user: Add support for FS_IOC_<GET|SET>VERSION ioctls

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A very specific thing for these two ioctls is that their code
implies that their third argument is of type 'long', but the
kernel uses that argument as if it is of type 'int'. This anomaly
is recognized also in commit 6080723 (linux-user: Implement
FS_IOC_GETFLAGS and FS_IOC_SETFLAGS ioctls).

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1579214991-19602-2-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Aleksandar Markovic 2020-01-16 23:49:40 +01:00 committed by Laurent Vivier
parent 6fd5944980
commit 5ae774a91f
2 changed files with 7 additions and 3 deletions
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2
linux-user/ioctls.h
View File

@ -138,6 +138,8 @@
IOCTL(FS_IOC_GETFLAGS, IOC_R, MK_PTR(TYPE_INT))
IOCTL(FS_IOC_SETFLAGS, IOC_W, MK_PTR(TYPE_INT))
IOCTL(FS_IOC_GETVERSION, IOC_R, MK_PTR(TYPE_INT))
IOCTL(FS_IOC_SETVERSION, IOC_W, MK_PTR(TYPE_INT))
#ifdef CONFIG_USBFS
/* USB ioctls */

8
linux-user/syscall_defs.h
View File

@ -911,12 +911,14 @@ struct target_pollfd {
#define TARGET_FICLONE TARGET_IOW(0x94, 9, int)
#define TARGET_FICLONERANGE TARGET_IOW(0x94, 13, struct file_clone_range)
/* Note that the ioctl numbers claim type "long" but the actual type
* used by the kernel is "int".
/*
* Note that the ioctl numbers for FS_IOC_<GET|SET><FLAGS|VERSION>
* claim type "long" but the actual type used by the kernel is "int".
*/
#define TARGET_FS_IOC_GETFLAGS TARGET_IOR('f', 1, abi_long)
#define TARGET_FS_IOC_SETFLAGS TARGET_IOW('f', 2, abi_long)
#define TARGET_FS_IOC_GETVERSION TARGET_IOR('v', 1, abi_long)
#define TARGET_FS_IOC_SETVERSION TARGET_IOW('v', 2, abi_long)
#define TARGET_FS_IOC_FIEMAP TARGET_IOWR('f',11,struct fiemap)
/* usb ioctls */