From b119339610d752f799e44bc42f4fe8f9d2bf8072 Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Wed, 2 Sep 2020 14:57:52 +0200 Subject: [PATCH 1/9] linux-user: fix implicit conversion from enumeration type error MK_ARRAY(type,size) is used to fill the field_types buffer, and if the "size" parameter is an enum type, clang [-Werror,-Wenum-conversion] reports an error when it is assigned to field_types which is also an enum, argtypes. To avoid that, convert "size" to "int" in MK_ARRAY(). "int" is the type used for the size evaluation in thunk_type_size(). Signed-off-by: Laurent Vivier Message-Id: <20200902125752.1033524-1-laurent@vivier.eu> --- include/exec/user/thunk.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/exec/user/thunk.h b/include/exec/user/thunk.h index a5bbb2c733..b281dfa30f 100644 --- a/include/exec/user/thunk.h +++ b/include/exec/user/thunk.h @@ -42,7 +42,7 @@ typedef enum argtype { } argtype; #define MK_PTR(type) TYPE_PTR, type -#define MK_ARRAY(type, size) TYPE_ARRAY, size, type +#define MK_ARRAY(type, size) TYPE_ARRAY, (int)(size), type #define MK_STRUCT(id) TYPE_STRUCT, id #define THUNK_TARGET 0 From d6092e085d23ee2884eb9df3ffb5306ff625e937 Mon Sep 17 00:00:00 2001 From: Filip Bozuta Date: Sun, 23 Aug 2020 21:50:07 +0200 Subject: [PATCH 2/9] linux-user: Add support for a group of btrfs ioctls used for subvolumes MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch implements functionality of following ioctls: BTRFS_IOC_SUBVOL_CREATE - Creating a btrfs subvolume Create a btrfs subvolume. The subvolume is created using the ioctl's third argument which represents a pointer to a following structure type: struct btrfs_ioctl_vol_args { __s64 fd; char name[BTRFS_PATH_NAME_MAX + 1]; }; Before calling this ioctl, the fields of this structure should be filled with aproppriate values. The fd field represents the file descriptor value of the subvolume and the name field represents the subvolume path. BTRFS_IOC_SUBVOL_GETFLAGS - Getting subvolume flags Read the flags of the btrfs subvolume. The flags are read using the ioctl's third argument that is a pointer of __u64 (unsigned long). The third argument represents a bit mask that can be composed of following values: BTRFS_SUBVOL_RDONLY (1ULL << 1) BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2) BTRFS_DEVICE_SPEC_BY_ID (1ULL << 3) BTRFS_SUBVOL_SPEC_BY_ID (1ULL << 4) BTRFS_IOC_SUBVOL_SETFLAGS - Setting subvolume flags Set the flags of the btrfs subvolume. The flags are set using the ioctl's third argument that is a pointer of __u64 (unsigned long). The third argument represents a bit mask that can be composed of same values as in the case of previous ioctl (BTRFS_IOC_SUBVOL_GETFLAGS). BTRFS_IOC_SUBVOL_GETINFO - Getting subvolume information Read information about the subvolume. The subvolume information is returned in the ioctl's third argument which represents a pointer to a following structure type: struct btrfs_ioctl_get_subvol_info_args { /* Id of this subvolume */ __u64 treeid; /* Name of this subvolume, used to get the real name at mount point */ char name[BTRFS_VOL_NAME_MAX + 1]; /* * Id of the subvolume which contains this subvolume. * Zero for top-level subvolume or a deleted subvolume. */ __u64 parent_id; /* * Inode number of the directory which contains this subvolume. * Zero for top-level subvolume or a deleted subvolume */ __u64 dirid; /* Latest transaction id of this subvolume */ __u64 generation; /* Flags of this subvolume */ __u64 flags; /* UUID of this subvolume */ __u8 uuid[BTRFS_UUID_SIZE]; /* * UUID of the subvolume of which this subvolume is a snapshot. * All zero for a non-snapshot subvolume. */ __u8 parent_uuid[BTRFS_UUID_SIZE]; /* * UUID of the subvolume from which this subvolume was received. * All zero for non-received subvolume. */ __u8 received_uuid[BTRFS_UUID_SIZE]; /* Transaction id indicating when change/create/send/receive happened */ __u64 ctransid; __u64 otransid; __u64 stransid; __u64 rtransid; /* Time corresponding to c/o/s/rtransid */ struct btrfs_ioctl_timespec ctime; struct btrfs_ioctl_timespec otime; struct btrfs_ioctl_timespec stime; struct btrfs_ioctl_timespec rtime; /* Must be zero */ __u64 reserved[8]; }; All of the fields of this structure are filled after the ioctl call. Implementation notes: Ioctls BTRFS_IOC_SUBVOL_CREATE and BTRFS_IOC_SUBVOL_GETINFO have structure types as third arguments. That is the reason why a corresponding definition are added in file 'linux-user/syscall_types.h'. The line '#include ' is added in file 'linux-user/syscall.c' to recognise preprocessor definitions for these ioctls. Since the file "linux/btrfs.h" was added in the kernel version 3.9, it is enwrapped in an #ifdef statement with parameter CONFIG_BTRFS which is defined in 'configure' if the header file is present. Signed-off-by: Filip Bozuta Tested-by: Daniel P. Berrangé Message-Id: <20200823195014.116226-2-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier --- configure | 9 +++++++++ linux-user/ioctls.h | 15 +++++++++++++++ linux-user/syscall.c | 3 +++ linux-user/syscall_defs.h | 8 ++++++++ linux-user/syscall_types.h | 32 ++++++++++++++++++++++++++++++++ 5 files changed, 67 insertions(+) diff --git a/configure b/configure index 8a3acef89d..277b70f259 100755 --- a/configure +++ b/configure @@ -4920,6 +4920,12 @@ if check_include sys/kcov.h ; then kcov=yes fi +# check for btrfs filesystem support (kernel must be 3.9+) +btrfs=no +if check_include linux/btrfs.h ; then + btrfs=yes +fi + # If we're making warnings fatal, apply this to Sphinx runs as well sphinx_werror="" if test "$werror" = "yes"; then @@ -6898,6 +6904,9 @@ fi if test "$kcov" = "yes" ; then echo "CONFIG_KCOV=y" >> $config_host_mak fi +if test "$btrfs" = "yes" ; then + echo "CONFIG_BTRFS=y" >> $config_host_mak +fi if test "$inotify" = "yes" ; then echo "CONFIG_INOTIFY=y" >> $config_host_mak fi diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h index e2fc09b5a5..bf89b96d27 100644 --- a/linux-user/ioctls.h +++ b/linux-user/ioctls.h @@ -174,6 +174,21 @@ IOCTL(FS_IOC32_GETVERSION, IOC_R, MK_PTR(TYPE_INT)) IOCTL(FS_IOC32_SETVERSION, IOC_W, MK_PTR(TYPE_INT)) +#ifdef BTRFS_IOC_SUBVOL_CREATE + IOCTL(BTRFS_IOC_SUBVOL_CREATE, IOC_W, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_vol_args))) +#endif +#ifdef BTRFS_IOC_SUBVOL_GETFLAGS + IOCTL(BTRFS_IOC_SUBVOL_GETFLAGS, IOC_R, MK_PTR(TYPE_ULONGLONG)) +#endif +#ifdef BTRFS_IOC_SUBVOL_SETFLAGS + IOCTL(BTRFS_IOC_SUBVOL_SETFLAGS, IOC_W, MK_PTR(TYPE_ULONGLONG)) +#endif +#ifdef BTRFS_IOC_GET_SUBVOL_INFO + IOCTL(BTRFS_IOC_GET_SUBVOL_INFO, IOC_R, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_get_subvol_info_args))) +#endif + #ifdef CONFIG_USBFS /* USB ioctls */ IOCTL(USBDEVFS_CONTROL, IOC_RW, diff --git a/linux-user/syscall.c b/linux-user/syscall.c index d14d849a72..93da3b9728 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -112,6 +112,9 @@ #include #include #include +#ifdef CONFIG_BTRFS +#include +#endif #ifdef HAVE_DRM_H #include #include diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index 9d07991176..cae79f8492 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -1005,6 +1005,14 @@ struct target_rtc_pll_info { #define TARGET_FS_IOC32_GETVERSION TARGET_IOR('v', 1, int) #define TARGET_FS_IOC32_SETVERSION TARGET_IOW('v', 2, int) +/* btrfs ioctls */ +#define TARGET_BTRFS_IOC_SUBVOL_CREATE TARGET_IOWU(BTRFS_IOCTL_MAGIC, 14) +#define TARGET_BTRFS_IOC_SUBVOL_GETFLAGS TARGET_IOR(BTRFS_IOCTL_MAGIC, 25,\ + abi_ullong) +#define TARGET_BTRFS_IOC_SUBVOL_SETFLAGS TARGET_IOW(BTRFS_IOCTL_MAGIC, 26,\ + abi_ullong) +#define TARGET_BTRFS_IOC_GET_SUBVOL_INFO TARGET_IORU(BTRFS_IOCTL_MAGIC, 60) + /* usb ioctls */ #define TARGET_USBDEVFS_CONTROL TARGET_IOWRU('U', 0) #define TARGET_USBDEVFS_BULK TARGET_IOWRU('U', 2) diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h index 12bf3484e2..0ce58d7772 100644 --- a/linux-user/syscall_types.h +++ b/linux-user/syscall_types.h @@ -358,6 +358,38 @@ STRUCT(blkpg_partition, MK_ARRAY(TYPE_CHAR, BLKPG_DEVNAMELTH), /* devname */ MK_ARRAY(TYPE_CHAR, BLKPG_VOLNAMELTH)) /* volname */ +#ifdef BTRFS_IOC_SUBVOL_CREATE +STRUCT(btrfs_ioctl_vol_args, + TYPE_LONGLONG, /* fd */ + MK_ARRAY(TYPE_CHAR, BTRFS_PATH_NAME_MAX + 1)) /* name */ +#endif + +#ifdef BTRFS_IOC_GET_SUBVOL_INFO +STRUCT(btrfs_ioctl_timespec, + TYPE_ULONGLONG, /* sec */ + TYPE_INT) /* nsec */ + +STRUCT(btrfs_ioctl_get_subvol_info_args, + TYPE_ULONGLONG, /* treeid */ + MK_ARRAY(TYPE_CHAR, BTRFS_VOL_NAME_MAX + 1), + TYPE_ULONGLONG, /* parentid */ + TYPE_ULONGLONG, /* dirid */ + TYPE_ULONGLONG, /* generation */ + TYPE_ULONGLONG, /* flags */ + MK_ARRAY(TYPE_CHAR, BTRFS_UUID_SIZE), /* uuid */ + MK_ARRAY(TYPE_CHAR, BTRFS_UUID_SIZE), /* parent_uuid */ + MK_ARRAY(TYPE_CHAR, BTRFS_UUID_SIZE), /* received_uuid */ + TYPE_ULONGLONG, /* ctransid */ + TYPE_ULONGLONG, /* otransid */ + TYPE_ULONGLONG, /* stransid */ + TYPE_ULONGLONG, /* rtransid */ + MK_STRUCT(STRUCT_btrfs_ioctl_timespec), /* ctime */ + MK_STRUCT(STRUCT_btrfs_ioctl_timespec), /* otime */ + MK_STRUCT(STRUCT_btrfs_ioctl_timespec), /* stime */ + MK_STRUCT(STRUCT_btrfs_ioctl_timespec), /* rtime */ + MK_ARRAY(TYPE_ULONGLONG, 8)) /* reserved */ +#endif + STRUCT(rtc_time, TYPE_INT, /* tm_sec */ TYPE_INT, /* tm_min */ From 527e8d8fe0908d5c64adf583af9dec3dff723f05 Mon Sep 17 00:00:00 2001 From: Filip Bozuta Date: Sun, 23 Aug 2020 21:50:08 +0200 Subject: [PATCH 3/9] linux-user: Add support for a group of btrfs ioctls used for snapshots MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch implements functionality for following ioctls: BTRFS_IOC_SNAP_CREATE - Creating a subvolume snapshot Create a snapshot of a btrfs subvolume. The snapshot is created using the ioctl's third argument that is a pointer to a 'struct btrfs_ioctl_vol_args' (which was mentioned in the previous patch). Before calling this ioctl, the fields of the structure should be filled with aproppriate values for the file descriptor and path of the subvolume for which the snapshot is to be created. BTRFS_IOC_SNAP_DESTROY - Removing a subvolume snapshot Delete a snapshot of a btrfs subvolume. The snapshot is deleted using the ioctl's third argument that is a pointer to a 'struct btrfs_ioctl_vol_args' (which was mentioned in the previous patch). Before calling this ioctl, the fields of the structure should be filled with aproppriate values for the file descriptor and path of the subvolume for which the snapshot is to be deleted. Implementation notes: Since the thunk type 'struct btrfs_ioctl_vol_args' is defined in the previous patch, the implementation for these ioctls was straightforward. Signed-off-by: Filip Bozuta Tested-by: Daniel P. Berrangé Message-Id: <20200823195014.116226-3-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier --- linux-user/ioctls.h | 8 ++++++++ linux-user/syscall_defs.h | 2 ++ linux-user/syscall_types.h | 3 ++- 3 files changed, 12 insertions(+), 1 deletion(-) diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h index bf89b96d27..bddeaca9e7 100644 --- a/linux-user/ioctls.h +++ b/linux-user/ioctls.h @@ -174,10 +174,18 @@ IOCTL(FS_IOC32_GETVERSION, IOC_R, MK_PTR(TYPE_INT)) IOCTL(FS_IOC32_SETVERSION, IOC_W, MK_PTR(TYPE_INT)) +#ifdef BTRFS_IOC_SNAP_CREATE + IOCTL(BTRFS_IOC_SNAP_CREATE, IOC_W, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_vol_args))) +#endif #ifdef BTRFS_IOC_SUBVOL_CREATE IOCTL(BTRFS_IOC_SUBVOL_CREATE, IOC_W, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_vol_args))) #endif +#ifdef BTRFS_IOC_SNAP_DESTROY + IOCTL(BTRFS_IOC_SNAP_DESTROY, IOC_W, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_vol_args))) +#endif #ifdef BTRFS_IOC_SUBVOL_GETFLAGS IOCTL(BTRFS_IOC_SUBVOL_GETFLAGS, IOC_R, MK_PTR(TYPE_ULONGLONG)) #endif diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index cae79f8492..1519de7a55 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -1006,7 +1006,9 @@ struct target_rtc_pll_info { #define TARGET_FS_IOC32_SETVERSION TARGET_IOW('v', 2, int) /* btrfs ioctls */ +#define TARGET_BTRFS_IOC_SNAP_CREATE TARGET_IOWU(BTRFS_IOCTL_MAGIC, 1) #define TARGET_BTRFS_IOC_SUBVOL_CREATE TARGET_IOWU(BTRFS_IOCTL_MAGIC, 14) +#define TARGET_BTRFS_IOC_SNAP_DESTROY TARGET_IOWU(BTRFS_IOCTL_MAGIC, 15) #define TARGET_BTRFS_IOC_SUBVOL_GETFLAGS TARGET_IOR(BTRFS_IOCTL_MAGIC, 25,\ abi_ullong) #define TARGET_BTRFS_IOC_SUBVOL_SETFLAGS TARGET_IOW(BTRFS_IOCTL_MAGIC, 26,\ diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h index 0ce58d7772..853b91d212 100644 --- a/linux-user/syscall_types.h +++ b/linux-user/syscall_types.h @@ -358,7 +358,8 @@ STRUCT(blkpg_partition, MK_ARRAY(TYPE_CHAR, BLKPG_DEVNAMELTH), /* devname */ MK_ARRAY(TYPE_CHAR, BLKPG_VOLNAMELTH)) /* volname */ -#ifdef BTRFS_IOC_SUBVOL_CREATE +#if defined(BTRFS_IOC_SUBVOL_CREATE) || defined(BTRFS_IOC_SNAP_CREATE) || \ + defined(BTRFS_IOC_SNAP_DESTROY) STRUCT(btrfs_ioctl_vol_args, TYPE_LONGLONG, /* fd */ MK_ARRAY(TYPE_CHAR, BTRFS_PATH_NAME_MAX + 1)) /* name */ From 9bbd60e7f7c17bca78df2dfc2f1d6786db429328 Mon Sep 17 00:00:00 2001 From: Filip Bozuta Date: Sun, 23 Aug 2020 21:50:09 +0200 Subject: [PATCH 4/9] linux-user: Add support for btrfs ioctls used to manipulate with devices MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch implements functionality for following ioctls: BTRFS_IOC_SCAN_DEV - Scanning device for a btrfs filesystem Scan a device for a btrfs filesystem. The device that is to be scanned is passed in the ioctl's third argument which represents a pointer to a 'struct ioc_vol_args' (which was mentioned in a previous patch). Before calling this ioctl, the name field of this structure should be filled with the aproppriate name value which represents a path for the device. If the device contains a btrfs filesystem, the ioctl returns 0, otherwise a negative value is returned. BTRFS_IOC_ADD_DEV - Adding a device to a btrfs filesystem Add a device to a btrfs filesystem. The device that is to be added is passed in the ioctl's third argument which represents a pointer to a 'struct ioc_vol_args' (which was mentioned in a previous patch). Before calling this ioctl, the name field of this structure should be filled with the aproppriate name value which represents a path for the device. BTRFS_IOC_RM_DEV - Removing a device from a btrfs filesystem Remove a device from a btrfs filesystem. The device that is to be removed is passed in the ioctl's third argument which represents a pointer to a 'struct ioc_vol_args' (which was mentioned in a previous patch). Before calling this ioctl, the name field of this structure should be filled with the aproppriate name value which represents a path for the device. BTRFS_IOC_DEV_INFO - Getting information about a device Obtain information for device in a btrfs filesystem. The information is gathered in the ioctl's third argument which represents a pointer to a following structure type: struct btrfs_ioctl_dev_info_args { __u64 devid; /* in/out */ __u8 uuid[BTRFS_UUID_SIZE]; /* in/out */ __u64 bytes_used; /* out */ __u64 total_bytes; /* out */ __u64 unused[379]; /* pad to 4k */ __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */ }; Before calling this ioctl, field "devid" should be set with the id value for the device for which the information is to be obtained. If this field is not aproppriately set, the errno ENODEV ("No such device") is returned. BTRFS_IOC_GET_DEV_STATS - Getting device statistics Obtain stats informatin for device in a btrfs filesystem. The information is gathered in the ioctl's third argument which represents a pointer to a following structure type: struct btrfs_ioctl_get_dev_stats { __u64 devid; /* in */ __u64 nr_items; /* in/out */ __u64 flags; /* in/out */ /* out values: */ __u64 values[BTRFS_DEV_STAT_VALUES_MAX]; /* * This pads the struct to 1032 bytes. It was originally meant to pad to * 1024 bytes, but when adding the flags field, the padding calculation * was not adjusted. */ __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; }; Before calling this ioctl, field "devid" should be set with the id value for the device for which the information is to be obtained. If this field is not aproppriately set, the errno ENODEV ("No such device") is returned. BTRFS_IOC_FORGET_DEV - Remove unmounted devices Search and remove all stale devices (devices which are not mounted). The third ioctl argument is a pointer to a 'struct btrfs_ioctl_vol_args'. The ioctl call will release all unmounted devices which match the path which is specified in the "name" field of the structure. If an empty path ("") is specified, all unmounted devices will be released. Implementation notes: Ioctls BTRFS_IOC_DEV_INFO and BTRFS_IOC_GET_DEV_STATS use types 'struct btrfs_ioctl_dev_info_args' and ' struct btrfs_ioctl_get_dev_stats' as third argument types. That is the reason why corresponding structure definitions were added in file 'linux-user/syscall_types.h'. Since the thunk type for 'struct ioc_vol_args' was already added in a previous patch, the rest of the implementation was straightforward. Signed-off-by: Filip Bozuta Tested-by: Daniel P. Berrangé Message-Id: <20200823195014.116226-4-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier --- linux-user/ioctls.h | 24 ++++++++++++++++++++++++ linux-user/syscall_defs.h | 6 ++++++ linux-user/syscall_types.h | 24 +++++++++++++++++++++++- 3 files changed, 53 insertions(+), 1 deletion(-) diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h index bddeaca9e7..74d73994f6 100644 --- a/linux-user/ioctls.h +++ b/linux-user/ioctls.h @@ -178,6 +178,22 @@ IOCTL(BTRFS_IOC_SNAP_CREATE, IOC_W, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_vol_args))) #endif +#ifdef BTRFS_IOC_SCAN_DEV + IOCTL(BTRFS_IOC_SCAN_DEV, IOC_W, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_vol_args))) +#endif +#ifdef BTRFS_IOC_FORGET_DEV + IOCTL(BTRFS_IOC_FORGET_DEV, IOC_W, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_vol_args))) +#endif +#ifdef BTRFS_IOC_ADD_DEV + IOCTL(BTRFS_IOC_ADD_DEV, IOC_W, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_vol_args))) +#endif +#ifdef BTRFS_IOC_RM_DEV + IOCTL(BTRFS_IOC_RM_DEV, IOC_W, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_vol_args))) +#endif #ifdef BTRFS_IOC_SUBVOL_CREATE IOCTL(BTRFS_IOC_SUBVOL_CREATE, IOC_W, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_vol_args))) @@ -192,6 +208,14 @@ #ifdef BTRFS_IOC_SUBVOL_SETFLAGS IOCTL(BTRFS_IOC_SUBVOL_SETFLAGS, IOC_W, MK_PTR(TYPE_ULONGLONG)) #endif +#ifdef BTRFS_IOC_DEV_INFO + IOCTL(BTRFS_IOC_DEV_INFO, IOC_RW, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_dev_info_args))) +#endif +#ifdef BTRFS_IOC_GET_DEV_STATS + IOCTL(BTRFS_IOC_GET_DEV_STATS, IOC_RW, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_get_dev_stats))) +#endif #ifdef BTRFS_IOC_GET_SUBVOL_INFO IOCTL(BTRFS_IOC_GET_SUBVOL_INFO, IOC_R, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_get_subvol_info_args))) diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index 1519de7a55..d11279b78b 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -1007,12 +1007,18 @@ struct target_rtc_pll_info { /* btrfs ioctls */ #define TARGET_BTRFS_IOC_SNAP_CREATE TARGET_IOWU(BTRFS_IOCTL_MAGIC, 1) +#define TARGET_BTRFS_IOC_SCAN_DEV TARGET_IOWU(BTRFS_IOCTL_MAGIC, 4) +#define TARGET_BTRFS_IOC_FORGET_DEV TARGET_IOWU(BTRFS_IOCTL_MAGIC, 5) +#define TARGET_BTRFS_IOC_ADD_DEV TARGET_IOWU(BTRFS_IOCTL_MAGIC, 10) +#define TARGET_BTRFS_IOC_RM_DEV TARGET_IOWU(BTRFS_IOCTL_MAGIC, 11) #define TARGET_BTRFS_IOC_SUBVOL_CREATE TARGET_IOWU(BTRFS_IOCTL_MAGIC, 14) #define TARGET_BTRFS_IOC_SNAP_DESTROY TARGET_IOWU(BTRFS_IOCTL_MAGIC, 15) #define TARGET_BTRFS_IOC_SUBVOL_GETFLAGS TARGET_IOR(BTRFS_IOCTL_MAGIC, 25,\ abi_ullong) #define TARGET_BTRFS_IOC_SUBVOL_SETFLAGS TARGET_IOW(BTRFS_IOCTL_MAGIC, 26,\ abi_ullong) +#define TARGET_BTRFS_IOC_DEV_INFO TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 30) +#define TARGET_BTRFS_IOC_GET_DEV_STATS TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 52) #define TARGET_BTRFS_IOC_GET_SUBVOL_INFO TARGET_IORU(BTRFS_IOCTL_MAGIC, 60) /* usb ioctls */ diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h index 853b91d212..7e52b7aec5 100644 --- a/linux-user/syscall_types.h +++ b/linux-user/syscall_types.h @@ -359,7 +359,9 @@ STRUCT(blkpg_partition, MK_ARRAY(TYPE_CHAR, BLKPG_VOLNAMELTH)) /* volname */ #if defined(BTRFS_IOC_SUBVOL_CREATE) || defined(BTRFS_IOC_SNAP_CREATE) || \ - defined(BTRFS_IOC_SNAP_DESTROY) + defined(BTRFS_IOC_SNAP_DESTROY) || defined(BTRFS_IOC_SCAN_DEV) || \ + defined(BTRFS_IOC_FORGET_DEV) || defined(BTRFS_IOC_ADD_DEV) || \ + defined(BTRFS_IOC_RM_DEV) || defined(BTRFS_IOC_DEV_INFO) STRUCT(btrfs_ioctl_vol_args, TYPE_LONGLONG, /* fd */ MK_ARRAY(TYPE_CHAR, BTRFS_PATH_NAME_MAX + 1)) /* name */ @@ -391,6 +393,26 @@ STRUCT(btrfs_ioctl_get_subvol_info_args, MK_ARRAY(TYPE_ULONGLONG, 8)) /* reserved */ #endif +#ifdef BTRFS_IOC_DEV_INFO +STRUCT(btrfs_ioctl_dev_info_args, + TYPE_ULONGLONG, /* devid */ + MK_ARRAY(TYPE_CHAR, BTRFS_UUID_SIZE), /* uuid */ + TYPE_ULONGLONG, /* bytes_used */ + TYPE_ULONGLONG, /* total_bytes */ + MK_ARRAY(TYPE_ULONGLONG, 379), /* unused */ + MK_ARRAY(TYPE_CHAR, BTRFS_DEVICE_PATH_NAME_MAX)) /* path */ +#endif + +#ifdef BTRFS_IOC_GET_DEV_STATS +STRUCT(btrfs_ioctl_get_dev_stats, + TYPE_ULONGLONG, /* devid */ + TYPE_ULONGLONG, /* nr_items */ + TYPE_ULONGLONG, /* flags */ + MK_ARRAY(TYPE_ULONGLONG, BTRFS_DEV_STAT_VALUES_MAX), /* values */ + MK_ARRAY(TYPE_ULONGLONG, + 128 - 2 - BTRFS_DEV_STAT_VALUES_MAX)) /* unused */ +#endif + STRUCT(rtc_time, TYPE_INT, /* tm_sec */ TYPE_INT, /* tm_min */ From 49b422a8c5d640b37cfb121e6676b8cdffb763c9 Mon Sep 17 00:00:00 2001 From: Filip Bozuta Date: Sun, 23 Aug 2020 21:50:10 +0200 Subject: [PATCH 5/9] linux-user: Add support for btrfs ioctls used to get/set features MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch implements functionality for following ioctls: BTRFS_IOC_GET_FEATURES - Getting feature flags Read feature flags for a btrfs filesystem. The feature flags are returned inside the ioctl's third argument which represents a pointer to a following structure type: struct btrfs_ioctl_feature_flags { __u64 compat_flags; __u64 compat_ro_flags; __u64 incompat_flags; }; All of the structure field represent bit masks that can be composed of values which can be found on: https://elixir.bootlin.com/linux/latest/source/fs/btrfs/ctree.h#L282 BTRFS_IOC_SET_FEATURES - Setting feature flags Set and clear feature flags for a btrfs filesystem. The feature flags are set using the ioctl's third argument which represents a 'struct btrfs_ioctl_feature_flags[2]' array. The first element of the array represent flags which are to be cleared and the second element of the array represent flags which are to be set. The second element has the priority over the first, which means that if there are matching flags in the elements, they will be set in the filesystem. If the flag values in the third argument aren't correctly set to be composed of the available predefined flag values, errno ENOPERM ("Operation not permitted") is returned. BTRFS_IOC_GET_SUPPORTED_FEATURES - Getting supported feature flags Read supported feature flags for a btrfs filesystem. The supported feature flags are read using the ioctl's third argument which represents a 'struct btrfs_ioctl_feature_flags[3]' array. The first element of this array represents all of the supported flags in the btrfs filesystem. The second element represents flags that can be safely set and third element represent flags that can be safely clearead. Implementation notes: All of the implemented ioctls use 'struct btrfs_ioctl_feature_flags' as third argument. That is the reason why a corresponding defintion was added in file 'linux-user/syscall_types.h'. Signed-off-by: Filip Bozuta Tested-by: Daniel P. Berrangé Message-Id: <20200823195014.116226-5-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier --- linux-user/ioctls.h | 12 ++++++++++++ linux-user/syscall_defs.h | 3 +++ linux-user/syscall_types.h | 5 +++++ 3 files changed, 20 insertions(+) diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h index 74d73994f6..11d7361848 100644 --- a/linux-user/ioctls.h +++ b/linux-user/ioctls.h @@ -216,6 +216,18 @@ IOCTL(BTRFS_IOC_GET_DEV_STATS, IOC_RW, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_get_dev_stats))) #endif +#ifdef BTRFS_IOC_GET_FEATURES + IOCTL(BTRFS_IOC_GET_FEATURES, IOC_R, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_feature_flags))) +#endif +#ifdef BTRFS_IOC_SET_FEATURES + IOCTL(BTRFS_IOC_SET_FEATURES, IOC_W, + MK_PTR(MK_ARRAY(MK_STRUCT(STRUCT_btrfs_ioctl_feature_flags), 2))) +#endif +#ifdef BTRFS_IOC_GET_SUPPORTED_FEATURES + IOCTL(BTRFS_IOC_GET_SUPPORTED_FEATURES, IOC_R, + MK_PTR(MK_ARRAY(MK_STRUCT(STRUCT_btrfs_ioctl_feature_flags), 3))) +#endif #ifdef BTRFS_IOC_GET_SUBVOL_INFO IOCTL(BTRFS_IOC_GET_SUBVOL_INFO, IOC_R, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_get_subvol_info_args))) diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index d11279b78b..f701389797 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -1019,6 +1019,9 @@ struct target_rtc_pll_info { abi_ullong) #define TARGET_BTRFS_IOC_DEV_INFO TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 30) #define TARGET_BTRFS_IOC_GET_DEV_STATS TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 52) +#define TARGET_BTRFS_IOC_GET_FEATURES TARGET_IORU(BTRFS_IOCTL_MAGIC, 57) +#define TARGET_BTRFS_IOC_SET_FEATURES TARGET_IOWU(BTRFS_IOCTL_MAGIC, 57) +#define TARGET_BTRFS_IOC_GET_SUPPORTED_FEATURES TARGET_IORU(BTRFS_IOCTL_MAGIC, 57) #define TARGET_BTRFS_IOC_GET_SUBVOL_INFO TARGET_IORU(BTRFS_IOCTL_MAGIC, 60) /* usb ioctls */ diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h index 7e52b7aec5..eba0c43d44 100644 --- a/linux-user/syscall_types.h +++ b/linux-user/syscall_types.h @@ -413,6 +413,11 @@ STRUCT(btrfs_ioctl_get_dev_stats, 128 - 2 - BTRFS_DEV_STAT_VALUES_MAX)) /* unused */ #endif +STRUCT(btrfs_ioctl_feature_flags, + TYPE_ULONGLONG, /* compat_flags */ + TYPE_ULONGLONG, /* compat_ro_flags */ + TYPE_ULONGLONG) /* incompat_flags */ + STRUCT(rtc_time, TYPE_INT, /* tm_sec */ TYPE_INT, /* tm_min */ From 0ff496a05f296fcb413a3b42dc5b238a3380dfb7 Mon Sep 17 00:00:00 2001 From: Filip Bozuta Date: Sun, 23 Aug 2020 21:50:11 +0200 Subject: [PATCH 6/9] linux-user: Add support for a group of btrfs inode ioctls MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch implements functionality of following ioctls: BTRFS_IOC_INO_LOOKUP - Reading tree root id and path Read tree root id and path for a given file or directory. The name and tree root id are returned in an ioctl's third argument that represents a pointer to a following type: struct btrfs_ioctl_ino_lookup_args { __u64 treeid; __u64 objectid; char name[BTRFS_INO_LOOKUP_PATH_MAX]; }; Before calling this ioctl, field 'objectid' should be filled with the object id value for which the tree id and path are to be read. Value 'BTRFS_FIRST_FREE_OBJECTID' represents the object id for the first available btrfs object (directory or file). BTRFS_IOC_INO_PATHS - Reading paths to all files Read path to all files with a certain inode number. The paths are returned in the ioctl's third argument which represents a pointer to a following type: struct btrfs_ioctl_ino_path_args { __u64 inum; /* in */ __u64 size; /* in */ __u64 reserved[4]; /* struct btrfs_data_container *fspath; out */ __u64 fspath; /* out */ }; Before calling this ioctl, the 'inum' and 'size' field should be filled with the aproppriate inode number and size of the directory where file paths should be looked for. For now, the paths are returned in an '__u64' (unsigned long long) value 'fspath'. BTRFS_IOC_LOGICAL_INO - Reading inode numbers Read inode numbers for files on a certain logical adress. The inode numbers are returned in the ioctl's third argument which represents a pointer to a following type: struct btrfs_ioctl_logical_ino_args { __u64 logical; /* in */ __u64 size; /* in */ __u64 reserved[3]; /* must be 0 for now */ __u64 flags; /* in, v2 only */ /* struct btrfs_data_container *inodes; out */ __u64 inodes; }; Before calling this ioctl, the 'logical' and 'size' field should be filled with the aproppriate logical adress and size of where the inode numbers of files should be looked for. For now, the inode numbers are returned in an '__u64' (unsigned long long) value 'inodes'. BTRFS_IOC_LOGICAL_INO_V2 - Reading inode numbers Same as the above mentioned ioctl except that it allows passing a flags 'BTRFS_LOGICAL_INO_ARGS_IGNORE_OFFSET'. BTRFS_IOC_INO_LOOKUP_USER - Reading subvolume name and path Read name and path of a subvolume. The tree root id and path are read in an ioctl's third argument which represents a pointer to a following type: struct btrfs_ioctl_ino_lookup_user_args { /* in, inode number containing the subvolume of 'subvolid' */ __u64 dirid; /* in */ __u64 treeid; /* out, name of the subvolume of 'treeid' */ char name[BTRFS_VOL_NAME_MAX + 1]; /* * out, constructed path from the directory with which the ioctl is * called to dirid */ char path[BTRFS_INO_LOOKUP_USER_PATH_MAX]; }; Before calling this ioctl, the 'dirid' and 'treeid' field should be filled with aproppriate values which represent the inode number of the directory that contains the subvolume and treeid of the subvolume. Implementation notes: All of the ioctls in this patch use structure types as third arguments. That is the reason why aproppriate thunk definitions were added in file 'syscall_types.h'. Signed-off-by: Filip Bozuta Tested-by: Daniel P. Berrangé Message-Id: <20200823195014.116226-6-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier --- linux-user/ioctls.h | 20 ++++++++++++++++++++ linux-user/syscall_defs.h | 5 +++++ linux-user/syscall_types.h | 32 ++++++++++++++++++++++++++++++++ 3 files changed, 57 insertions(+) diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h index 11d7361848..23807513ee 100644 --- a/linux-user/ioctls.h +++ b/linux-user/ioctls.h @@ -202,6 +202,10 @@ IOCTL(BTRFS_IOC_SNAP_DESTROY, IOC_W, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_vol_args))) #endif +#ifdef BTRFS_IOC_INO_LOOKUP + IOCTL(BTRFS_IOC_INO_LOOKUP, IOC_RW, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_ino_lookup_args))) +#endif #ifdef BTRFS_IOC_SUBVOL_GETFLAGS IOCTL(BTRFS_IOC_SUBVOL_GETFLAGS, IOC_R, MK_PTR(TYPE_ULONGLONG)) #endif @@ -212,6 +216,14 @@ IOCTL(BTRFS_IOC_DEV_INFO, IOC_RW, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_dev_info_args))) #endif +#ifdef BTRFS_IOC_INO_PATHS + IOCTL(BTRFS_IOC_INO_PATHS, IOC_RW, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_ino_path_args))) +#endif +#ifdef BTRFS_IOC_LOGICAL_INO + IOCTL(BTRFS_IOC_LOGICAL_INO, IOC_RW, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_logical_ino_args))) +#endif #ifdef BTRFS_IOC_GET_DEV_STATS IOCTL(BTRFS_IOC_GET_DEV_STATS, IOC_RW, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_get_dev_stats))) @@ -228,10 +240,18 @@ IOCTL(BTRFS_IOC_GET_SUPPORTED_FEATURES, IOC_R, MK_PTR(MK_ARRAY(MK_STRUCT(STRUCT_btrfs_ioctl_feature_flags), 3))) #endif +#ifdef BTRFS_IOC_LOGICAL_INO_V2 + IOCTL(BTRFS_IOC_LOGICAL_INO_V2, IOC_RW, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_logical_ino_args))) +#endif #ifdef BTRFS_IOC_GET_SUBVOL_INFO IOCTL(BTRFS_IOC_GET_SUBVOL_INFO, IOC_R, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_get_subvol_info_args))) #endif +#ifdef BTRFS_IOC_INO_LOOKUP_USER + IOCTL(BTRFS_IOC_INO_LOOKUP_USER, IOC_RW, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_ino_lookup_user_args))) +#endif #ifdef CONFIG_USBFS /* USB ioctls */ diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index f701389797..4929121956 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -1013,16 +1013,21 @@ struct target_rtc_pll_info { #define TARGET_BTRFS_IOC_RM_DEV TARGET_IOWU(BTRFS_IOCTL_MAGIC, 11) #define TARGET_BTRFS_IOC_SUBVOL_CREATE TARGET_IOWU(BTRFS_IOCTL_MAGIC, 14) #define TARGET_BTRFS_IOC_SNAP_DESTROY TARGET_IOWU(BTRFS_IOCTL_MAGIC, 15) +#define TARGET_BTRFS_IOC_INO_LOOKUP TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 18) #define TARGET_BTRFS_IOC_SUBVOL_GETFLAGS TARGET_IOR(BTRFS_IOCTL_MAGIC, 25,\ abi_ullong) #define TARGET_BTRFS_IOC_SUBVOL_SETFLAGS TARGET_IOW(BTRFS_IOCTL_MAGIC, 26,\ abi_ullong) #define TARGET_BTRFS_IOC_DEV_INFO TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 30) +#define TARGET_BTRFS_IOC_INO_PATHS TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 35) +#define TARGET_BTRFS_IOC_LOGICAL_INO TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 36) #define TARGET_BTRFS_IOC_GET_DEV_STATS TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 52) #define TARGET_BTRFS_IOC_GET_FEATURES TARGET_IORU(BTRFS_IOCTL_MAGIC, 57) #define TARGET_BTRFS_IOC_SET_FEATURES TARGET_IOWU(BTRFS_IOCTL_MAGIC, 57) #define TARGET_BTRFS_IOC_GET_SUPPORTED_FEATURES TARGET_IORU(BTRFS_IOCTL_MAGIC, 57) +#define TARGET_BTRFS_IOC_LOGICAL_INO_V2 TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 59) #define TARGET_BTRFS_IOC_GET_SUBVOL_INFO TARGET_IORU(BTRFS_IOCTL_MAGIC, 60) +#define TARGET_BTRFS_IOC_INO_LOOKUP_USER TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 62) /* usb ioctls */ #define TARGET_USBDEVFS_CONTROL TARGET_IOWRU('U', 0) diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h index eba0c43d44..dab2c16bca 100644 --- a/linux-user/syscall_types.h +++ b/linux-user/syscall_types.h @@ -393,6 +393,38 @@ STRUCT(btrfs_ioctl_get_subvol_info_args, MK_ARRAY(TYPE_ULONGLONG, 8)) /* reserved */ #endif +#ifdef BTRFS_IOC_INO_LOOKUP +STRUCT(btrfs_ioctl_ino_lookup_args, + TYPE_ULONGLONG, /* treeid */ + TYPE_ULONGLONG, /* objectid */ + MK_ARRAY(TYPE_CHAR, BTRFS_INO_LOOKUP_PATH_MAX)) /* name */ +#endif + +#ifdef BTRFS_IOC_INO_PATHS +STRUCT(btrfs_ioctl_ino_path_args, + TYPE_ULONGLONG, /* inum */ + TYPE_ULONGLONG, /* size */ + MK_ARRAY(TYPE_ULONGLONG, 4), /* reserved */ + TYPE_ULONGLONG) /* fspath */ +#endif + +#if defined(BTRFS_IOC_LOGICAL_INO) || defined(BTRFS_IOC_LOGICAL_INO_V2) +STRUCT(btrfs_ioctl_logical_ino_args, + TYPE_ULONGLONG, /* logical */ + TYPE_ULONGLONG, /* size */ + MK_ARRAY(TYPE_ULONGLONG, 3), /* reserved */ + TYPE_ULONGLONG, /* flags */ + TYPE_ULONGLONG) /* inodes */ +#endif + +#ifdef BTRFS_IOC_INO_LOOKUP_USER +STRUCT(btrfs_ioctl_ino_lookup_user_args, + TYPE_ULONGLONG, /* dirid */ + TYPE_ULONGLONG, /* treeid */ + MK_ARRAY(TYPE_CHAR, BTRFS_VOL_NAME_MAX + 1), /* name */ + MK_ARRAY(TYPE_CHAR, BTRFS_INO_LOOKUP_USER_PATH_MAX)) /* path */ +#endif + #ifdef BTRFS_IOC_DEV_INFO STRUCT(btrfs_ioctl_dev_info_args, TYPE_ULONGLONG, /* devid */ From 784c08c8c4c069c8d7136ef39ef37b5ab33da97c Mon Sep 17 00:00:00 2001 From: Filip Bozuta Date: Sun, 23 Aug 2020 21:50:12 +0200 Subject: [PATCH 7/9] linux-user: Add support for two btrfs ioctls used for subvolume MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch implements functionality for following ioctl: BTRFS_IOC_DEFAULT_SUBVOL - Setting a default subvolume Set a default subvolume for a btrfs filesystem. The third ioctl's argument is a '__u64' (unsigned long long) which represents the id of a subvolume that is to be set as the default. BTRFS_IOC_GET_SUBVOL_ROOTREF - Getting tree and directory id of subvolumes Read tree and directory id of subvolumes from a btrfs filesystem. The tree and directory id's are returned in the ioctl's third argument which represents a pointer to a following type: struct btrfs_ioctl_get_subvol_rootref_args { /* in/out, minimum id of rootref's treeid to be searched */ __u64 min_treeid; /* out */ struct { __u64 treeid; __u64 dirid; } rootref[BTRFS_MAX_ROOTREF_BUFFER_NUM]; /* out, number of found items */ __u8 num_items; __u8 align[7]; }; Before calling this ioctl, 'min_treeid' field should be filled with value that represent the minimum value for the tree id. Implementation notes: Ioctl BTRFS_IOC_GET_SUBVOL_ROOTREF uses the above mentioned structure type as third argument. That is the reason why a aproppriate thunk structure definition is added in file 'syscall_types.h'. Signed-off-by: Filip Bozuta Tested-by: Daniel P. Berrangé Message-Id: <20200823195014.116226-7-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier --- linux-user/ioctls.h | 7 +++++++ linux-user/syscall_defs.h | 3 +++ linux-user/syscall_types.h | 13 +++++++++++++ 3 files changed, 23 insertions(+) diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h index 23807513ee..dc2f3d2413 100644 --- a/linux-user/ioctls.h +++ b/linux-user/ioctls.h @@ -206,6 +206,9 @@ IOCTL(BTRFS_IOC_INO_LOOKUP, IOC_RW, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_ino_lookup_args))) #endif +#ifdef BTRFS_IOC_DEFAULT_SUBVOL + IOCTL(BTRFS_IOC_DEFAULT_SUBVOL, IOC_W, MK_PTR(TYPE_ULONGLONG)) +#endif #ifdef BTRFS_IOC_SUBVOL_GETFLAGS IOCTL(BTRFS_IOC_SUBVOL_GETFLAGS, IOC_R, MK_PTR(TYPE_ULONGLONG)) #endif @@ -248,6 +251,10 @@ IOCTL(BTRFS_IOC_GET_SUBVOL_INFO, IOC_R, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_get_subvol_info_args))) #endif +#ifdef BTRFS_IOC_GET_SUBVOL_ROOTREF + IOCTL(BTRFS_IOC_GET_SUBVOL_ROOTREF, IOC_RW, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_get_subvol_rootref_args))) +#endif #ifdef BTRFS_IOC_INO_LOOKUP_USER IOCTL(BTRFS_IOC_INO_LOOKUP_USER, IOC_RW, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_ino_lookup_user_args))) diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index 4929121956..bb60c728d8 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -1014,6 +1014,8 @@ struct target_rtc_pll_info { #define TARGET_BTRFS_IOC_SUBVOL_CREATE TARGET_IOWU(BTRFS_IOCTL_MAGIC, 14) #define TARGET_BTRFS_IOC_SNAP_DESTROY TARGET_IOWU(BTRFS_IOCTL_MAGIC, 15) #define TARGET_BTRFS_IOC_INO_LOOKUP TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 18) +#define TARGET_BTRFS_IOC_DEFAULT_SUBVOL TARGET_IOW(BTRFS_IOCTL_MAGIC, 19,\ + abi_ullong) #define TARGET_BTRFS_IOC_SUBVOL_GETFLAGS TARGET_IOR(BTRFS_IOCTL_MAGIC, 25,\ abi_ullong) #define TARGET_BTRFS_IOC_SUBVOL_SETFLAGS TARGET_IOW(BTRFS_IOCTL_MAGIC, 26,\ @@ -1027,6 +1029,7 @@ struct target_rtc_pll_info { #define TARGET_BTRFS_IOC_GET_SUPPORTED_FEATURES TARGET_IORU(BTRFS_IOCTL_MAGIC, 57) #define TARGET_BTRFS_IOC_LOGICAL_INO_V2 TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 59) #define TARGET_BTRFS_IOC_GET_SUBVOL_INFO TARGET_IORU(BTRFS_IOCTL_MAGIC, 60) +#define TARGET_BTRFS_IOC_GET_SUBVOL_ROOTREF TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 61) #define TARGET_BTRFS_IOC_INO_LOOKUP_USER TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 62) /* usb ioctls */ diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h index dab2c16bca..73e36620ce 100644 --- a/linux-user/syscall_types.h +++ b/linux-user/syscall_types.h @@ -435,6 +435,19 @@ STRUCT(btrfs_ioctl_dev_info_args, MK_ARRAY(TYPE_CHAR, BTRFS_DEVICE_PATH_NAME_MAX)) /* path */ #endif +#ifdef BTRFS_IOC_GET_SUBVOL_ROOTREF +STRUCT(rootref, + TYPE_ULONGLONG, /* treeid */ + TYPE_ULONGLONG) /* dirid */ + +STRUCT(btrfs_ioctl_get_subvol_rootref_args, + TYPE_ULONGLONG, /* min_treeid */ + MK_ARRAY(MK_STRUCT(STRUCT_rootref), + BTRFS_MAX_ROOTREF_BUFFER_NUM), /* rootref */ + TYPE_CHAR, /* num_items */ + MK_ARRAY(TYPE_CHAR, 7)) /* align */ +#endif + #ifdef BTRFS_IOC_GET_DEV_STATS STRUCT(btrfs_ioctl_get_dev_stats, TYPE_ULONGLONG, /* devid */ From 53906f689dc6d644b0a0b8473f7909276fbabd72 Mon Sep 17 00:00:00 2001 From: Filip Bozuta Date: Sun, 23 Aug 2020 21:50:13 +0200 Subject: [PATCH 8/9] linux-user: Add support for btrfs ioctls used to manage quota MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch implements functionality for following ioctls: BTRFS_IOC_QUOTA_CTL - Enabling/Disabling quota support Enable or disable quota support for a btrfs filesystem. Quota support is enabled or disabled using the ioctls third argument which represents a pointer to a following type: struct btrfs_ioctl_quota_ctl_args { __u64 cmd; __u64 status; }; Before calling this ioctl, the 'cmd' field should be filled with one of the values 'BTRFS_QUOTA_CTL_ENABLE' (enabling quota) 'BTRFS_QUOTA_CTL_DISABLE' (disabling quota). BTRFS_IOC_QGROUP_CREATE - Creating/Removing a subvolume quota group Create or remove a subvolume quota group. The subvolume quota group is created or removed using the ioctl's third argument which represents a pointer to a following type: struct btrfs_ioctl_qgroup_create_args { __u64 create; __u64 qgroupid; }; Before calling this ioctl, the 'create' field should be filled with the aproppriate value depending on if the user wants to create or remove a quota group (0 for removing, everything else for creating). Also, the 'qgroupid' field should be filled with the value for the quota group id that is to be created. BTRFS_IOC_QGROUP_ASSIGN - Asigning or removing a quota group as child group Asign or remove a quota group as child quota group of another group in the btrfs filesystem. The asignment is done using the ioctl's third argument which represents a pointert to a following type: struct btrfs_ioctl_qgroup_assign_args { __u64 assign; __u64 src; __u64 dst; }; Before calling this ioctl, the 'assign' field should be filled with the aproppriate value depending on if the user wants to asign or remove a quota group as a child quota group of another group (0 for removing, everythin else for asigning). Also, the 'src' and 'dst' fields should be filled with the aproppriate quota group id values depending on which quota group needs to asigned or removed as child quota group of another group ('src' gets asigned or removed as child group of 'dst'). BTRFS_IOC_QGROUP_LIMIT - Limiting the size of a quota group Limit the size of a quota group. The size of the quota group is limited with the ioctls third argument which represents a pointer to a following type: struct btrfs_ioctl_qgroup_limit_args { __u64 qgroupid; struct btrfs_qgroup_limit lim; }; Before calling this ioctl, the 'qgroup' id field should be filled with aproppriate value of the quota group id for which the size is to be limited. The second field is of following type: struct btrfs_qgroup_limit { __u64 flags; __u64 max_rfer; __u64 max_excl; __u64 rsv_rfer; __u64 rsv_excl; }; The 'max_rfer' field should be filled with the size to which the quota group should be limited. The 'flags' field can be used for passing additional options and can have values which can be found on: https://elixir.bootlin.com/linux/latest/source/include/uapi/linux/btrfs.h#L67 BTRFS_IOC_QUOTA_RESCAN_STATUS - Checking status of running rescan operation Check status of a running rescan operation. The status is checked using the ioctl's third argument which represents a pointer to a following type: struct btrfs_ioctl_quota_rescan_args { __u64 flags; __u64 progress; __u64 reserved[6]; }; If there is a rescan operation running, 'flags' field is set to 1, and 'progress' field is set to aproppriate value which represents the progress of the operation. BTRFS_IOC_QUOTA_RESCAN - Starting a rescan operation Start ar rescan operation to Trash all quota groups and scan the metadata again with the current config. Before calling this ioctl, BTRFS_IOC_QUOTA_RESCAN_STATUS sould be run to check if there is already a rescan operation runing. After that ioctl call, the received 'struct btrfs_ioctl_quota_rescan_args' should be than passed as this ioctls third argument. BTRFS_IOC_QUOTA_RESCAN_WAIT - Waiting for a rescan operation to finish Wait until a rescan operation is finished (if there is a rescan operation running). The third ioctls argument is ignored. Implementation notes: Almost all of the ioctls in this patch use structure types as third arguments. That is the reason why aproppriate thunk definitions were added in file 'syscall_types.h'. Signed-off-by: Filip Bozuta Tested-by: Daniel P. Berrangé Message-Id: <20200823195014.116226-8-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier --- linux-user/ioctls.h | 27 +++++++++++++++++++++++++++ linux-user/syscall_defs.h | 7 +++++++ linux-user/syscall_types.h | 29 +++++++++++++++++++++++++++++ 3 files changed, 63 insertions(+) diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h index dc2f3d2413..42759c0778 100644 --- a/linux-user/ioctls.h +++ b/linux-user/ioctls.h @@ -227,6 +227,33 @@ IOCTL(BTRFS_IOC_LOGICAL_INO, IOC_RW, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_logical_ino_args))) #endif +#ifdef BTRFS_IOC_QUOTA_CTL + IOCTL(BTRFS_IOC_QUOTA_CTL, IOC_RW, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_quota_ctl_args))) +#endif +#ifdef BTRFS_IOC_QGROUP_ASSIGN + IOCTL(BTRFS_IOC_QGROUP_ASSIGN, IOC_W, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_qgroup_assign_args))) +#endif +#ifdef BTRFS_IOC_QGROUP_CREATE + IOCTL(BTRFS_IOC_QGROUP_CREATE, IOC_W, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_qgroup_create_args))) +#endif +#ifdef BTRFS_IOC_QGROUP_LIMIT + IOCTL(BTRFS_IOC_QGROUP_LIMIT, IOC_R, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_qgroup_limit_args))) +#endif +#ifdef BTRFS_IOC_QUOTA_RESCAN + IOCTL(BTRFS_IOC_QUOTA_RESCAN, IOC_W, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_quota_rescan_args))) +#endif +#ifdef BTRFS_IOC_QUOTA_RESCAN_STATUS + IOCTL(BTRFS_IOC_QUOTA_RESCAN_STATUS, IOC_R, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_quota_rescan_args))) +#endif +#ifdef BTRFS_IOC_QUOTA_RESCAN_WAIT + IOCTL(BTRFS_IOC_QUOTA_RESCAN_WAIT, 0, TYPE_NULL) +#endif #ifdef BTRFS_IOC_GET_DEV_STATS IOCTL(BTRFS_IOC_GET_DEV_STATS, IOC_RW, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_get_dev_stats))) diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index bb60c728d8..b557b07eec 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -1023,6 +1023,13 @@ struct target_rtc_pll_info { #define TARGET_BTRFS_IOC_DEV_INFO TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 30) #define TARGET_BTRFS_IOC_INO_PATHS TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 35) #define TARGET_BTRFS_IOC_LOGICAL_INO TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 36) +#define TARGET_BTRFS_IOC_QUOTA_CTL TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 40) +#define TARGET_BTRFS_IOC_QGROUP_ASSIGN TARGET_IOWU(BTRFS_IOCTL_MAGIC, 41) +#define TARGET_BTRFS_IOC_QGROUP_CREATE TARGET_IOWU(BTRFS_IOCTL_MAGIC, 42) +#define TARGET_BTRFS_IOC_QGROUP_LIMIT TARGET_IORU(BTRFS_IOCTL_MAGIC, 43) +#define TARGET_BTRFS_IOC_QUOTA_RESCAN TARGET_IOWU(BTRFS_IOCTL_MAGIC, 44) +#define TARGET_BTRFS_IOC_QUOTA_RESCAN_STATUS TARGET_IORU(BTRFS_IOCTL_MAGIC, 45) +#define TARGET_BTRFS_IOC_QUOTA_RESCAN_WAIT TARGET_IO(BTRFS_IOCTL_MAGIC, 46) #define TARGET_BTRFS_IOC_GET_DEV_STATS TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 52) #define TARGET_BTRFS_IOC_GET_FEATURES TARGET_IORU(BTRFS_IOCTL_MAGIC, 57) #define TARGET_BTRFS_IOC_SET_FEATURES TARGET_IOWU(BTRFS_IOCTL_MAGIC, 57) diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h index 73e36620ce..51d9931b95 100644 --- a/linux-user/syscall_types.h +++ b/linux-user/syscall_types.h @@ -458,6 +458,35 @@ STRUCT(btrfs_ioctl_get_dev_stats, 128 - 2 - BTRFS_DEV_STAT_VALUES_MAX)) /* unused */ #endif +STRUCT(btrfs_ioctl_quota_ctl_args, + TYPE_ULONGLONG, /* cmd */ + TYPE_ULONGLONG) /* status */ + +STRUCT(btrfs_ioctl_quota_rescan_args, + TYPE_ULONGLONG, /* flags */ + TYPE_ULONGLONG, /* progress */ + MK_ARRAY(TYPE_ULONGLONG, 6)) /* reserved */ + +STRUCT(btrfs_ioctl_qgroup_assign_args, + TYPE_ULONGLONG, /* assign */ + TYPE_ULONGLONG, /* src */ + TYPE_ULONGLONG) /* dst */ + +STRUCT(btrfs_ioctl_qgroup_create_args, + TYPE_ULONGLONG, /* create */ + TYPE_ULONGLONG) /* qgroupid */ + +STRUCT(btrfs_qgroup_limit, + TYPE_ULONGLONG, /* flags */ + TYPE_ULONGLONG, /* max_rfer */ + TYPE_ULONGLONG, /* max_excl */ + TYPE_ULONGLONG, /* rsv_rfer */ + TYPE_ULONGLONG) /* rsv_excl */ + +STRUCT(btrfs_ioctl_qgroup_limit_args, + TYPE_ULONGLONG, /* qgroupid */ + MK_STRUCT(STRUCT_btrfs_qgroup_limit)) /* lim */ + STRUCT(btrfs_ioctl_feature_flags, TYPE_ULONGLONG, /* compat_flags */ TYPE_ULONGLONG, /* compat_ro_flags */ From 9a5a5a05523651d4c887388a6e0d0e446ffb279d Mon Sep 17 00:00:00 2001 From: Filip Bozuta Date: Sun, 23 Aug 2020 21:50:14 +0200 Subject: [PATCH 9/9] linux-user: Add support for btrfs ioctls used to scrub a filesystem MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch implements functionality for following ioctls: BTRFS_IOC_SCRUB - Starting a btrfs filesystem scrub Start a btrfs filesystem scrub. The third ioctls argument is a pointer to a following type: struct btrfs_ioctl_scrub_args { __u64 devid; /* in */ __u64 start; /* in */ __u64 end; /* in */ __u64 flags; /* in */ struct btrfs_scrub_progress progress; /* out */ /* pad to 1k */ __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8]; }; Before calling this ioctl, field 'devid' should be filled with value that represents the device id of the btrfs filesystem for which the scrub is to be started. BTRFS_IOC_SCRUB_CANCEL - Canceling scrub of a btrfs filesystem Cancel a btrfs filesystem scrub if it is running. The third ioctls argument is ignored. BTRFS_IOC_SCRUB_PROGRESS - Getting status of a running scrub Read the status of a running btrfs filesystem scrub. The third ioctls argument is a pointer to the above mentioned 'struct btrfs_ioctl_scrub_args'. Similarly as with 'BTRFS_IOC_SCRUB', the 'devid' field should be filled with value that represents the id of the btrfs device for which the scrub has started. The status of a running scrub is returned in the field 'progress' which is of type 'struct btrfs_scrub_progress' and its definition can be found at: https://elixir.bootlin.com/linux/latest/source/include/uapi/linux/btrfs.h#L150 Implementation nots: Ioctls in this patch use type 'struct btrfs_ioctl_scrub_args' as their third argument. That is the reason why an aproppriate thunk type definition is added in file 'syscall_types.h'. Signed-off-by: Filip Bozuta Tested-by: Daniel P. Berrangé Message-Id: <20200823195014.116226-9-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier --- linux-user/ioctls.h | 11 +++++++++++ linux-user/syscall_defs.h | 3 +++ linux-user/syscall_types.h | 29 +++++++++++++++++++++++++++++ 3 files changed, 43 insertions(+) diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h index 42759c0778..585874f090 100644 --- a/linux-user/ioctls.h +++ b/linux-user/ioctls.h @@ -215,6 +215,17 @@ #ifdef BTRFS_IOC_SUBVOL_SETFLAGS IOCTL(BTRFS_IOC_SUBVOL_SETFLAGS, IOC_W, MK_PTR(TYPE_ULONGLONG)) #endif +#ifdef BTRFS_IOC_SCRUB + IOCTL(BTRFS_IOC_SCRUB, IOC_RW, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_scrub_args))) +#endif +#ifdef BTRFS_IOC_SCRUB_CANCEL + IOCTL(BTRFS_IOC_SCRUB_CANCEL, 0, TYPE_NULL) +#endif +#ifdef BTRFS_IOC_SCRUB_PROGRESS + IOCTL(BTRFS_IOC_SCRUB_PROGRESS, IOC_RW, + MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_scrub_args))) +#endif #ifdef BTRFS_IOC_DEV_INFO IOCTL(BTRFS_IOC_DEV_INFO, IOC_RW, MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_dev_info_args))) diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index b557b07eec..33a414c50f 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -1020,6 +1020,9 @@ struct target_rtc_pll_info { abi_ullong) #define TARGET_BTRFS_IOC_SUBVOL_SETFLAGS TARGET_IOW(BTRFS_IOCTL_MAGIC, 26,\ abi_ullong) +#define TARGET_BTRFS_IOC_SCRUB TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 27) +#define TARGET_BTRFS_IOC_SCRUB_CANCEL TARGET_IO(BTRFS_IOCTL_MAGIC, 28) +#define TARGET_BTRFS_IOC_SCRUB_PROGRESS TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 29) #define TARGET_BTRFS_IOC_DEV_INFO TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 30) #define TARGET_BTRFS_IOC_INO_PATHS TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 35) #define TARGET_BTRFS_IOC_LOGICAL_INO TARGET_IOWRU(BTRFS_IOCTL_MAGIC, 36) diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h index 51d9931b95..ba2c1518eb 100644 --- a/linux-user/syscall_types.h +++ b/linux-user/syscall_types.h @@ -425,6 +425,35 @@ STRUCT(btrfs_ioctl_ino_lookup_user_args, MK_ARRAY(TYPE_CHAR, BTRFS_INO_LOOKUP_USER_PATH_MAX)) /* path */ #endif +#if defined(BTRFS_IOC_SCRUB) || defined(BTRFS_IOC_SCRUB_PROGRESS) +STRUCT(btrfs_scrub_progress, + TYPE_ULONGLONG, /* data_extents_scrubbed */ + TYPE_ULONGLONG, /* tree_extents_scrubbed */ + TYPE_ULONGLONG, /* data_bytes_scrubbed */ + TYPE_ULONGLONG, /* tree_bytes_scrubbed */ + TYPE_ULONGLONG, /* read_errors */ + TYPE_ULONGLONG, /* csum_errors */ + TYPE_ULONGLONG, /* verify_errors */ + TYPE_ULONGLONG, /* no_csum */ + TYPE_ULONGLONG, /* csum_discards */ + TYPE_ULONGLONG, /* super_errors */ + TYPE_ULONGLONG, /* malloc_errors */ + TYPE_ULONGLONG, /* uncorrectable_errors */ + TYPE_ULONGLONG, /* corrected_er */ + TYPE_ULONGLONG, /* last_physical */ + TYPE_ULONGLONG) /* unverified_errors */ + +STRUCT(btrfs_ioctl_scrub_args, + TYPE_ULONGLONG, /* devid */ + TYPE_ULONGLONG, /* start */ + TYPE_ULONGLONG, /* end */ + TYPE_ULONGLONG, /* flags */ + MK_STRUCT(STRUCT_btrfs_scrub_progress), /* progress */ + MK_ARRAY(TYPE_ULONGLONG, + (1024 - 32 - + sizeof(struct btrfs_scrub_progress)) / 8)) /* unused */ +#endif + #ifdef BTRFS_IOC_DEV_INFO STRUCT(btrfs_ioctl_dev_info_args, TYPE_ULONGLONG, /* devid */