Date: Sat, 29 Apr 2017 09:20:04 +0000 (UTC) From: Dmitry Chagin <dchagin@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r317588 - in stable/11/sys: sys vm Message-ID: <201704290920.v3T9K4Nl063812@repo.freebsd.org>
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Author: dchagin Date: Sat Apr 29 09:20:04 2017 New Revision: 317588 URL: https://svnweb.freebsd.org/changeset/base/317588 Log: MFC r316288: Add kern_mincore() helper for mincore() syscall. Modified: stable/11/sys/sys/syscallsubr.h stable/11/sys/vm/vm_mmap.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/sys/syscallsubr.h ============================================================================== --- stable/11/sys/sys/syscallsubr.h Sat Apr 29 09:18:55 2017 (r317587) +++ stable/11/sys/sys/syscallsubr.h Sat Apr 29 09:20:04 2017 (r317588) @@ -151,6 +151,7 @@ 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: stable/11/sys/vm/vm_mmap.c ============================================================================== --- stable/11/sys/vm/vm_mmap.c Sat Apr 29 09:18:55 2017 (r317587) +++ stable/11/sys/vm/vm_mmap.c Sat Apr 29 09:20:04 2017 (r317588) @@ -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);
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