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errmsg_ioctl() - v2 ioctls that return error messages

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2025-08-18 12:55:28 -04:00
parent ca482e7fd8
commit 760d43376c
1 changed files with 19 additions and 20 deletions
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39
c_src/libbcachefs.h
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@ -130,57 +130,56 @@ struct bchfs_handle bchu_fs_open_by_dev(const char *, int *);
int bchu_dev_path_to_idx(struct bchfs_handle, const char *);
#define errmsg_ioctl(_ioctl_fd, _ioctl_nr, _ioctl_arg) \
do { \
char err[8192]; \
(_ioctl_arg)->err.msg_ptr = (ulong) err; \
(_ioctl_arg)->err.msg_len = sizeof(err); \
int ret = ioctl(_ioctl_fd, _ioctl_nr, _ioctl_arg); \
if (ret < 0) \
die(#_ioctl_nr " error:\n%s", err); \
} while (0)
static inline void bchu_disk_add(struct bchfs_handle fs, const char *dev)
{
struct bch_ioctl_disk i = { .dev = (unsigned long) dev, };
struct bch_ioctl_disk_v2 i = { .dev = (unsigned long) dev, };
xioctl(fs.ioctl_fd, BCH_IOCTL_DISK_ADD, &i);
errmsg_ioctl(fs.ioctl_fd, BCH_IOCTL_DISK_ADD_v2, &i);
}
static inline void bchu_disk_remove(struct bchfs_handle fs, unsigned dev_idx,
unsigned flags)
{
struct bch_ioctl_disk i = {
.flags = flags|BCH_BY_INDEX,
.dev = dev_idx,
};
struct bch_ioctl_disk_v2 i = { .flags = flags|BCH_BY_INDEX, .dev = dev_idx, };
xioctl(fs.ioctl_fd, BCH_IOCTL_DISK_REMOVE, &i);
errmsg_ioctl(fs.ioctl_fd, BCH_IOCTL_DISK_REMOVE_v2, &i);
}
static inline void bchu_disk_online(struct bchfs_handle fs, char *dev)
{
struct bch_ioctl_disk i = { .dev = (unsigned long) dev, };
struct bch_ioctl_disk_v2 i = { .dev = (unsigned long) dev, };
xioctl(fs.ioctl_fd, BCH_IOCTL_DISK_ONLINE, &i);
errmsg_ioctl(fs.ioctl_fd, BCH_IOCTL_DISK_ONLINE_v2, &i);
}
static inline void bchu_disk_offline(struct bchfs_handle fs, unsigned dev_idx,
unsigned flags)
{
struct bch_ioctl_disk i = {
.flags = flags|BCH_BY_INDEX,
.dev = dev_idx,
};
struct bch_ioctl_disk_v2 i = { .flags = flags|BCH_BY_INDEX, .dev = dev_idx, };
xioctl(fs.ioctl_fd, BCH_IOCTL_DISK_OFFLINE, &i);
errmsg_ioctl(fs.ioctl_fd, BCH_IOCTL_DISK_OFFLINE_v2, &i);
}
static inline void bchu_disk_set_state(struct bchfs_handle fs, unsigned dev,
unsigned new_state, unsigned flags)
{
char err[8192];
struct bch_ioctl_disk_set_state_v2 i = {
.flags = flags|BCH_BY_INDEX,
.new_state = new_state,
.dev = dev,
.err.msg_ptr = (unsigned long)err,
.err.msg_len = sizeof(err),
};
int ret = ioctl(fs.ioctl_fd, BCH_IOCTL_DISK_SET_STATE_v2, &i);
if (ret < 0)
die("disk_set_state error:\n%s", err);
errmsg_ioctl(fs.ioctl_fd, BCH_IOCTL_DISK_SET_STATE_v2, &i);
}
static inline struct bch_ioctl_fs_usage *bchu_fs_usage(struct bchfs_handle fs)