This fixes a common user complaint - uninformative error messages from various bcachefs-tools commands.
Add v2 versions of various ioctls that include a 'struct bch_ioctl_err_mesg', a pointer to a userspace buffer for an error message - and plumb a printbuf through various code for returning errors. Kent Overstreet (3): bcachefs: Add v2 ioctls that return error strings bcachefs: v2 versions of subvolume ioctls bcachefs: Plumb error messages through data drop paths fs/bcachefs/bcachefs_ioctl.h | 87 ++++++++++++++----- fs/bcachefs/chardev.c | 159 +++++++++++++++++++++++++++++++++-- fs/bcachefs/chardev.h | 3 + fs/bcachefs/ec.c | 23 +++-- fs/bcachefs/ec.h | 5 +- fs/bcachefs/fs-ioctl.c | 91 ++++++++++++++++++-- fs/bcachefs/migrate.c | 55 ++++++------ fs/bcachefs/migrate.h | 4 +- fs/bcachefs/super.c | 6 +- 9 files changed, 359 insertions(+), 74 deletions(-) -- 2.50.1
