Author: dchagin Date: Thu Mar 30 19:42:49 2017 New Revision: 316288 URL: https://svnweb.freebsd.org/changeset/base/316288
Log: Add kern_mincore() helper for micore() syscall. Suggested by: kib@ Reviewed by: kib@ MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D10143 Modified: head/sys/sys/syscallsubr.h head/sys/vm/vm_mmap.c Modified: head/sys/sys/syscallsubr.h ============================================================================== --- head/sys/sys/syscallsubr.h Thu Mar 30 19:32:25 2017 (r316287) +++ head/sys/sys/syscallsubr.h Thu Mar 30 19:42:49 2017 (r316288) @@ -152,6 +152,7 @@ int kern_lseek(struct thread *td, int fd int kern_lutimes(struct thread *td, char *path, enum uio_seg pathseg, struct timeval *tptr, enum uio_seg tptrseg); int kern_madvise(struct thread *td, uintptr_t addr, size_t len, int behav); +int kern_mincore(struct thread *td, uintptr_t addr, size_t len, char *vec); int kern_mkdirat(struct thread *td, int fd, char *path, enum uio_seg segflg, int mode); int kern_mkfifoat(struct thread *td, int fd, char *path, Modified: head/sys/vm/vm_mmap.c ============================================================================== --- head/sys/vm/vm_mmap.c Thu Mar 30 19:32:25 2017 (r316287) +++ head/sys/vm/vm_mmap.c Thu Mar 30 19:42:49 2017 (r316288) @@ -711,11 +711,17 @@ struct mincore_args { int sys_mincore(struct thread *td, struct mincore_args *uap) { + + return (kern_mincore(td, (uintptr_t)uap->addr, uap->len, uap->vec)); +} + +int +kern_mincore(struct thread *td, uintptr_t addr0, size_t len, char *vec) +{ vm_offset_t addr, first_addr; vm_offset_t end, cend; pmap_t pmap; vm_map_t map; - char *vec; int error = 0; int vecindex, lastvecindex; vm_map_entry_t current; @@ -732,17 +738,12 @@ sys_mincore(struct thread *td, struct mi * Make sure that the addresses presented are valid for user * mode. */ - first_addr = addr = trunc_page((vm_offset_t) uap->addr); - end = addr + (vm_size_t)round_page(uap->len); + first_addr = addr = trunc_page(addr0); + end = addr + (vm_size_t)round_page(len); map = &td->td_proc->p_vmspace->vm_map; if (end > vm_map_max(map) || end < addr) return (ENOMEM); - /* - * Address of byte vector - */ - vec = uap->vec; - pmap = vmspace_pmap(td->td_proc->p_vmspace); vm_map_lock_read(map); _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
