g/^decreate/ s/(Chan\*, char\*, int, ulong)/(Chan *c, char *name, int mode, ulong perm)/
g/^devremove/ s/(Chan\*)/(Chan *c)/
g/^devwstat/ s/(Chan\*, uchar\*, int)/(Chan *c, uchar *stat, int nstat)/
g/^devpower/ s/(int)/(int toggle)/
g/^devconfig/ s/(int, char \*, DevConf \*)/(int toggle, char *name, DevConf *conf)/
g/^devcreate/ s/(Chan\*, char\*, int, ulong)/(Chan *c, char *name, int mode, ulong perm)/