Date: Fri, 24 Feb 2017 20:04:02 +0000 (UTC) From: Mahdi Mokhtari <mmokhi@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r314219 - in head/sys: amd64/linux amd64/linux32 compat/linux i386/linux Message-ID: <201702242004.v1OK42Kb033259@repo.freebsd.org>
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Author: mmokhi (ports committer) Date: Fri Feb 24 20:04:02 2017 New Revision: 314219 URL: https://svnweb.freebsd.org/changeset/base/314219 Log: Add linux_preadv() and linux_pwritev() syscalls to Linuxulator. Reviewed by: dchagin Approved by: dchagin, trasz (src committers) MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D9722 Modified: head/sys/amd64/linux/linux_dummy.c head/sys/amd64/linux32/linux.h head/sys/amd64/linux32/linux32_dummy.c head/sys/amd64/linux32/linux32_machdep.c head/sys/compat/linux/linux_file.c head/sys/i386/linux/linux_dummy.c Modified: head/sys/amd64/linux/linux_dummy.c ============================================================================== --- head/sys/amd64/linux/linux_dummy.c Fri Feb 24 19:47:27 2017 (r314218) +++ head/sys/amd64/linux/linux_dummy.c Fri Feb 24 20:04:02 2017 (r314219) @@ -110,9 +110,6 @@ DUMMY(timerfd_gettime); /* linux 2.6.27: */ DUMMY(signalfd4); DUMMY(inotify_init1); -/* linux 2.6.30: */ -DUMMY(preadv); -DUMMY(pwritev); /* linux 2.6.31: */ DUMMY(perf_event_open); /* linux 2.6.38: */ Modified: head/sys/amd64/linux32/linux.h ============================================================================== --- head/sys/amd64/linux32/linux.h Fri Feb 24 19:47:27 2017 (r314218) +++ head/sys/amd64/linux32/linux.h Fri Feb 24 20:04:02 2017 (r314219) @@ -663,6 +663,7 @@ struct l_user_desc { (((desc)->b >> LINUX_ENTRY_B_USEABLE) & 1) struct iovec; +struct uio; struct l_iovec32 { uint32_t iov_base; @@ -671,6 +672,8 @@ struct l_iovec32 { int linux32_copyiniov(struct l_iovec32 *iovp32, l_ulong iovcnt, struct iovec **iovp, int error); +int linux32_copyinuio(struct l_iovec32 *iovp, l_ulong iovcnt, + struct uio **uiop); int linux_copyout_rusage(struct rusage *ru, void *uaddr); /* robust futexes */ Modified: head/sys/amd64/linux32/linux32_dummy.c ============================================================================== --- head/sys/amd64/linux32/linux32_dummy.c Fri Feb 24 19:47:27 2017 (r314218) +++ head/sys/amd64/linux32/linux32_dummy.c Fri Feb 24 20:04:02 2017 (r314219) @@ -110,9 +110,6 @@ DUMMY(timerfd_gettime); /* linux 2.6.27: */ DUMMY(signalfd4); DUMMY(inotify_init1); -/* linux 2.6.30: */ -DUMMY(preadv); -DUMMY(pwritev); /* linux 2.6.31: */ DUMMY(perf_event_open); /* linux 2.6.33: */ Modified: head/sys/amd64/linux32/linux32_machdep.c ============================================================================== --- head/sys/amd64/linux32/linux32_machdep.c Fri Feb 24 19:47:27 2017 (r314218) +++ head/sys/amd64/linux32/linux32_machdep.c Fri Feb 24 20:04:02 2017 (r314219) @@ -144,7 +144,7 @@ linux_execve(struct thread *td, struct l CTASSERT(sizeof(struct l_iovec32) == 8); -static int +int linux32_copyinuio(struct l_iovec32 *iovp, l_ulong iovcnt, struct uio **uiop) { struct l_iovec32 iov32; Modified: head/sys/compat/linux/linux_file.c ============================================================================== --- head/sys/compat/linux/linux_file.c Fri Feb 24 19:47:27 2017 (r314218) +++ head/sys/compat/linux/linux_file.c Fri Feb 24 20:04:02 2017 (r314219) @@ -1028,6 +1028,62 @@ linux_pwrite(struct thread *td, struct l } int +linux_preadv(struct thread *td, struct linux_preadv_args *uap) +{ + struct uio *auio; + int error; + off_t offset; + + /* + * According http://man7.org/linux/man-pages/man2/preadv.2.html#NOTES + * pos_l and pos_h, respectively, contain the + * low order and high order 32 bits of offset. + */ + offset = (((off_t)uap->pos_h << (sizeof(offset) * 4)) << + (sizeof(offset) * 4)) | uap->pos_l; + if (offset < 0) + return (EINVAL); +#ifdef COMPAT_LINUX32 + error = linux32_copyinuio(PTRIN(uap->vec), uap->vlen, &auio); +#else + error = copyinuio(uap->vec, uap->vlen, &auio); +#endif + if (error != 0) + return (error); + error = kern_preadv(td, uap->fd, auio, offset); + free(auio, M_IOV); + return (error); +} + +int +linux_pwritev(struct thread *td, struct linux_pwritev_args *uap) +{ + struct uio *auio; + int error; + off_t offset; + + /* + * According http://man7.org/linux/man-pages/man2/pwritev.2.html#NOTES + * pos_l and pos_h, respectively, contain the + * low order and high order 32 bits of offset. + */ + offset = (((off_t)uap->pos_h << (sizeof(offset) * 4)) << + (sizeof(offset) * 4)) | uap->pos_l; + if (offset < 0) + return (EINVAL); +#ifdef COMPAT_LINUX32 + error = linux32_copyinuio(PTRIN(uap->vec), uap->vlen, &auio); +#else + error = copyinuio(uap->vec, uap->vlen, &auio); +#endif + if (error != 0) + return (error); + error = kern_pwritev(td, uap->fd, auio, offset); + free(auio, M_IOV); + return (error); +} + +int linux_mount(struct thread *td, struct linux_mount_args *args) { char fstypename[MFSNAMELEN]; Modified: head/sys/i386/linux/linux_dummy.c ============================================================================== --- head/sys/i386/linux/linux_dummy.c Fri Feb 24 19:47:27 2017 (r314218) +++ head/sys/i386/linux/linux_dummy.c Fri Feb 24 20:04:02 2017 (r314219) @@ -106,9 +106,6 @@ DUMMY(timerfd_gettime); /* linux 2.6.27: */ DUMMY(signalfd4); DUMMY(inotify_init1); -/* linux 2.6.30: */ -DUMMY(preadv); -DUMMY(pwritev); /* linux 2.6.31: */ DUMMY(perf_event_open); /* linux 2.6.33: */
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