Index: head/sys/compat/linux/linux_stats.c =================================================================== --- head/sys/compat/linux/linux_stats.c (revision 366898) +++ head/sys/compat/linux/linux_stats.c (revision 366899) @@ -1,728 +1,723 @@ /*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 1994-1995 Søren Schmidt * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include "opt_compat.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef COMPAT_LINUX32 #include #include #else #include #include #endif #include #include static void translate_vnhook_major_minor(struct vnode *vp, struct stat *sb) { int major, minor; if (vn_isdisk(vp)) { sb->st_mode &= ~S_IFMT; sb->st_mode |= S_IFBLK; } /* * Return the same st_dev for every devfs instance. The reason * for this is to work around an idiosyncrasy of glibc getttynam() * implementation: it checks whether st_dev returned for fd 0 * is the same as st_dev returned for the target of /proc/self/fd/0 * symlink, and with linux chroots having their own devfs instance, * the check will fail if you chroot into it. */ if (rootdevmp != NULL && vp->v_mount->mnt_vfc == rootdevmp->mnt_vfc) sb->st_dev = rootdevmp->mnt_stat.f_fsid.val[0]; - if (vp->v_type == VCHR && vp->v_rdev != NULL && - linux_driver_get_major_minor(devtoname(vp->v_rdev), - &major, &minor) == 0) { + if (linux_vn_get_major_minor(vp, &major, &minor) == 0) sb->st_rdev = (major << 8 | minor); - } } static int linux_kern_statat(struct thread *td, int flag, int fd, const char *path, enum uio_seg pathseg, struct stat *sbp) { return (kern_statat(td, flag, fd, path, pathseg, sbp, translate_vnhook_major_minor)); } #ifdef LINUX_LEGACY_SYSCALLS static int linux_kern_stat(struct thread *td, const char *path, enum uio_seg pathseg, struct stat *sbp) { return (linux_kern_statat(td, 0, AT_FDCWD, path, pathseg, sbp)); } static int linux_kern_lstat(struct thread *td, const char *path, enum uio_seg pathseg, struct stat *sbp) { return (linux_kern_statat(td, AT_SYMLINK_NOFOLLOW, AT_FDCWD, path, pathseg, sbp)); } #endif static void translate_fd_major_minor(struct thread *td, int fd, struct stat *buf) { struct file *fp; struct vnode *vp; struct mount *mp; int major, minor; /* * No capability rights required here. */ if ((!S_ISCHR(buf->st_mode) && !S_ISBLK(buf->st_mode)) || fget(td, fd, &cap_no_rights, &fp) != 0) return; vp = fp->f_vnode; if (vp != NULL && vn_isdisk(vp)) { buf->st_mode &= ~S_IFMT; buf->st_mode |= S_IFBLK; } if (vp != NULL && rootdevmp != NULL) { mp = vp->v_mount; __compiler_membar(); if (mp != NULL && mp->mnt_vfc == rootdevmp->mnt_vfc) buf->st_dev = rootdevmp->mnt_stat.f_fsid.val[0]; } - if (vp != NULL && vp->v_rdev != NULL && - linux_driver_get_major_minor(devtoname(vp->v_rdev), - &major, &minor) == 0) { + if (linux_vn_get_major_minor(vp, &major, &minor) == 0) { buf->st_rdev = (major << 8 | minor); } else if (fp->f_type == DTYPE_PTS) { struct tty *tp = fp->f_data; /* Convert the numbers for the slave device. */ if (linux_driver_get_major_minor(devtoname(tp->t_dev), &major, &minor) == 0) { buf->st_rdev = (major << 8 | minor); } } fdrop(fp, td); } /* * l_dev_t has the same encoding as dev_t in the latter's low 16 bits, so * truncation of a dev_t to 16 bits gives the same result as unpacking * using major() and minor() and repacking in the l_dev_t format. This * detail is hidden in dev_to_ldev(). Overflow in conversions of dev_t's * are not checked for, as for other fields. * * dev_to_ldev() is only used for translating st_dev. When we convert * st_rdev for copying it out, it isn't really a dev_t, but has already * been translated to an l_dev_t in a nontrivial way. Translating it * again would be illogical but would have no effect since the low 16 * bits have the same encoding. * * The nontrivial translation for st_rdev renumbers some devices, but not * ones that can be mounted on, so it is consistent with the translation * for st_dev except when the renumbering or truncation causes conflicts. */ #define dev_to_ldev(d) ((uint16_t)(d)) static int newstat_copyout(struct stat *buf, void *ubuf) { struct l_newstat tbuf; bzero(&tbuf, sizeof(tbuf)); tbuf.st_dev = dev_to_ldev(buf->st_dev); tbuf.st_ino = buf->st_ino; tbuf.st_mode = buf->st_mode; tbuf.st_nlink = buf->st_nlink; tbuf.st_uid = buf->st_uid; tbuf.st_gid = buf->st_gid; tbuf.st_rdev = buf->st_rdev; tbuf.st_size = buf->st_size; tbuf.st_atim.tv_sec = buf->st_atim.tv_sec; tbuf.st_atim.tv_nsec = buf->st_atim.tv_nsec; tbuf.st_mtim.tv_sec = buf->st_mtim.tv_sec; tbuf.st_mtim.tv_nsec = buf->st_mtim.tv_nsec; tbuf.st_ctim.tv_sec = buf->st_ctim.tv_sec; tbuf.st_ctim.tv_nsec = buf->st_ctim.tv_nsec; tbuf.st_blksize = buf->st_blksize; tbuf.st_blocks = buf->st_blocks; return (copyout(&tbuf, ubuf, sizeof(tbuf))); } #ifdef LINUX_LEGACY_SYSCALLS int linux_newstat(struct thread *td, struct linux_newstat_args *args) { struct stat buf; char *path; int error; if (!LUSECONVPATH(td)) { error = linux_kern_stat(td, args->path, UIO_USERSPACE, &buf); } else { LCONVPATHEXIST(td, args->path, &path); error = linux_kern_stat(td, path, UIO_SYSSPACE, &buf); LFREEPATH(path); } if (error) return (error); return (newstat_copyout(&buf, args->buf)); } int linux_newlstat(struct thread *td, struct linux_newlstat_args *args) { struct stat sb; char *path; int error; if (!LUSECONVPATH(td)) { error = linux_kern_lstat(td, args->path, UIO_USERSPACE, &sb); } else { LCONVPATHEXIST(td, args->path, &path); error = linux_kern_lstat(td, path, UIO_SYSSPACE, &sb); LFREEPATH(path); } if (error) return (error); return (newstat_copyout(&sb, args->buf)); } #endif int linux_newfstat(struct thread *td, struct linux_newfstat_args *args) { struct stat buf; int error; error = kern_fstat(td, args->fd, &buf); translate_fd_major_minor(td, args->fd, &buf); if (!error) error = newstat_copyout(&buf, args->buf); return (error); } #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) static int stat_copyout(struct stat *buf, void *ubuf) { struct l_stat lbuf; bzero(&lbuf, sizeof(lbuf)); lbuf.st_dev = dev_to_ldev(buf->st_dev); lbuf.st_ino = buf->st_ino; lbuf.st_mode = buf->st_mode; lbuf.st_nlink = buf->st_nlink; lbuf.st_uid = buf->st_uid; lbuf.st_gid = buf->st_gid; lbuf.st_rdev = buf->st_rdev; lbuf.st_size = MIN(buf->st_size, INT32_MAX); lbuf.st_atim.tv_sec = buf->st_atim.tv_sec; lbuf.st_atim.tv_nsec = buf->st_atim.tv_nsec; lbuf.st_mtim.tv_sec = buf->st_mtim.tv_sec; lbuf.st_mtim.tv_nsec = buf->st_mtim.tv_nsec; lbuf.st_ctim.tv_sec = buf->st_ctim.tv_sec; lbuf.st_ctim.tv_nsec = buf->st_ctim.tv_nsec; lbuf.st_blksize = buf->st_blksize; lbuf.st_blocks = buf->st_blocks; lbuf.st_flags = buf->st_flags; lbuf.st_gen = buf->st_gen; return (copyout(&lbuf, ubuf, sizeof(lbuf))); } int linux_stat(struct thread *td, struct linux_stat_args *args) { struct stat buf; char *path; int error; if (!LUSECONVPATH(td)) { error = linux_kern_stat(td, args->path, UIO_USERSPACE, &buf); } else { LCONVPATHEXIST(td, args->path, &path); error = linux_kern_stat(td, path, UIO_SYSSPACE, &buf); LFREEPATH(path); } if (error) { return (error); } return (stat_copyout(&buf, args->up)); } int linux_lstat(struct thread *td, struct linux_lstat_args *args) { struct stat buf; char *path; int error; if (!LUSECONVPATH(td)) { error = linux_kern_lstat(td, args->path, UIO_USERSPACE, &buf); } else { LCONVPATHEXIST(td, args->path, &path); error = linux_kern_lstat(td, path, UIO_SYSSPACE, &buf); LFREEPATH(path); } if (error) { return (error); } return (stat_copyout(&buf, args->up)); } #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ struct l_statfs { l_long f_type; l_long f_bsize; l_long f_blocks; l_long f_bfree; l_long f_bavail; l_long f_files; l_long f_ffree; l_fsid_t f_fsid; l_long f_namelen; l_long f_frsize; l_long f_flags; l_long f_spare[4]; }; #define LINUX_CODA_SUPER_MAGIC 0x73757245L #define LINUX_EXT2_SUPER_MAGIC 0xEF53L #define LINUX_HPFS_SUPER_MAGIC 0xf995e849L #define LINUX_ISOFS_SUPER_MAGIC 0x9660L #define LINUX_MSDOS_SUPER_MAGIC 0x4d44L #define LINUX_NCP_SUPER_MAGIC 0x564cL #define LINUX_NFS_SUPER_MAGIC 0x6969L #define LINUX_NTFS_SUPER_MAGIC 0x5346544EL #define LINUX_PROC_SUPER_MAGIC 0x9fa0L #define LINUX_UFS_SUPER_MAGIC 0x00011954L /* XXX - UFS_MAGIC in Linux */ #define LINUX_ZFS_SUPER_MAGIC 0x2FC12FC1 #define LINUX_DEVFS_SUPER_MAGIC 0x1373L #define LINUX_SHMFS_MAGIC 0x01021994 static long bsd_to_linux_ftype(const char *fstypename) { int i; static struct {const char *bsd_name; long linux_type;} b2l_tbl[] = { {"ufs", LINUX_UFS_SUPER_MAGIC}, {"zfs", LINUX_ZFS_SUPER_MAGIC}, {"cd9660", LINUX_ISOFS_SUPER_MAGIC}, {"nfs", LINUX_NFS_SUPER_MAGIC}, {"ext2fs", LINUX_EXT2_SUPER_MAGIC}, {"procfs", LINUX_PROC_SUPER_MAGIC}, {"msdosfs", LINUX_MSDOS_SUPER_MAGIC}, {"ntfs", LINUX_NTFS_SUPER_MAGIC}, {"nwfs", LINUX_NCP_SUPER_MAGIC}, {"hpfs", LINUX_HPFS_SUPER_MAGIC}, {"coda", LINUX_CODA_SUPER_MAGIC}, {"devfs", LINUX_DEVFS_SUPER_MAGIC}, {"tmpfs", LINUX_SHMFS_MAGIC}, {NULL, 0L}}; for (i = 0; b2l_tbl[i].bsd_name != NULL; i++) if (strcmp(b2l_tbl[i].bsd_name, fstypename) == 0) return (b2l_tbl[i].linux_type); return (0L); } static int bsd_to_linux_statfs(struct statfs *bsd_statfs, struct l_statfs *linux_statfs) { #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) uint64_t tmp; #define LINUX_HIBITS 0xffffffff00000000ULL tmp = bsd_statfs->f_blocks | bsd_statfs->f_bfree | bsd_statfs->f_files | bsd_statfs->f_bsize; if ((bsd_statfs->f_bavail != -1 && (bsd_statfs->f_bavail & LINUX_HIBITS)) || (bsd_statfs->f_ffree != -1 && (bsd_statfs->f_ffree & LINUX_HIBITS)) || (tmp & LINUX_HIBITS)) return (EOVERFLOW); #undef LINUX_HIBITS #endif linux_statfs->f_type = bsd_to_linux_ftype(bsd_statfs->f_fstypename); linux_statfs->f_bsize = bsd_statfs->f_bsize; linux_statfs->f_blocks = bsd_statfs->f_blocks; linux_statfs->f_bfree = bsd_statfs->f_bfree; linux_statfs->f_bavail = bsd_statfs->f_bavail; linux_statfs->f_ffree = bsd_statfs->f_ffree; linux_statfs->f_files = bsd_statfs->f_files; linux_statfs->f_fsid.val[0] = bsd_statfs->f_fsid.val[0]; linux_statfs->f_fsid.val[1] = bsd_statfs->f_fsid.val[1]; linux_statfs->f_namelen = MAXNAMLEN; linux_statfs->f_frsize = bsd_statfs->f_bsize; linux_statfs->f_flags = 0; memset(linux_statfs->f_spare, 0, sizeof(linux_statfs->f_spare)); return (0); } int linux_statfs(struct thread *td, struct linux_statfs_args *args) { struct l_statfs linux_statfs; struct statfs *bsd_statfs; char *path; int error; if (!LUSECONVPATH(td)) { bsd_statfs = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK); error = kern_statfs(td, args->path, UIO_USERSPACE, bsd_statfs); } else { LCONVPATHEXIST(td, args->path, &path); bsd_statfs = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK); error = kern_statfs(td, path, UIO_SYSSPACE, bsd_statfs); LFREEPATH(path); } if (error == 0) error = bsd_to_linux_statfs(bsd_statfs, &linux_statfs); free(bsd_statfs, M_STATFS); if (error != 0) return (error); return (copyout(&linux_statfs, args->buf, sizeof(linux_statfs))); } #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) static void bsd_to_linux_statfs64(struct statfs *bsd_statfs, struct l_statfs64 *linux_statfs) { linux_statfs->f_type = bsd_to_linux_ftype(bsd_statfs->f_fstypename); linux_statfs->f_bsize = bsd_statfs->f_bsize; linux_statfs->f_blocks = bsd_statfs->f_blocks; linux_statfs->f_bfree = bsd_statfs->f_bfree; linux_statfs->f_bavail = bsd_statfs->f_bavail; linux_statfs->f_ffree = bsd_statfs->f_ffree; linux_statfs->f_files = bsd_statfs->f_files; linux_statfs->f_fsid.val[0] = bsd_statfs->f_fsid.val[0]; linux_statfs->f_fsid.val[1] = bsd_statfs->f_fsid.val[1]; linux_statfs->f_namelen = MAXNAMLEN; linux_statfs->f_frsize = bsd_statfs->f_bsize; linux_statfs->f_flags = 0; memset(linux_statfs->f_spare, 0, sizeof(linux_statfs->f_spare)); } int linux_statfs64(struct thread *td, struct linux_statfs64_args *args) { struct l_statfs64 linux_statfs; struct statfs *bsd_statfs; char *path; int error; if (args->bufsize != sizeof(struct l_statfs64)) return (EINVAL); if (!LUSECONVPATH(td)) { bsd_statfs = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK); error = kern_statfs(td, args->path, UIO_USERSPACE, bsd_statfs); } else { LCONVPATHEXIST(td, args->path, &path); bsd_statfs = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK); error = kern_statfs(td, path, UIO_SYSSPACE, bsd_statfs); LFREEPATH(path); } if (error == 0) bsd_to_linux_statfs64(bsd_statfs, &linux_statfs); free(bsd_statfs, M_STATFS); if (error != 0) return (error); return (copyout(&linux_statfs, args->buf, sizeof(linux_statfs))); } int linux_fstatfs64(struct thread *td, struct linux_fstatfs64_args *args) { struct l_statfs64 linux_statfs; struct statfs *bsd_statfs; int error; if (args->bufsize != sizeof(struct l_statfs64)) return (EINVAL); bsd_statfs = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK); error = kern_fstatfs(td, args->fd, bsd_statfs); if (error == 0) bsd_to_linux_statfs64(bsd_statfs, &linux_statfs); free(bsd_statfs, M_STATFS); if (error != 0) return (error); return (copyout(&linux_statfs, args->buf, sizeof(linux_statfs))); } #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ int linux_fstatfs(struct thread *td, struct linux_fstatfs_args *args) { struct l_statfs linux_statfs; struct statfs *bsd_statfs; int error; bsd_statfs = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK); error = kern_fstatfs(td, args->fd, bsd_statfs); if (error == 0) error = bsd_to_linux_statfs(bsd_statfs, &linux_statfs); free(bsd_statfs, M_STATFS); if (error != 0) return (error); return (copyout(&linux_statfs, args->buf, sizeof(linux_statfs))); } struct l_ustat { l_daddr_t f_tfree; l_ino_t f_tinode; char f_fname[6]; char f_fpack[6]; }; #ifdef LINUX_LEGACY_SYSCALLS int linux_ustat(struct thread *td, struct linux_ustat_args *args) { return (EOPNOTSUPP); } #endif #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) static int stat64_copyout(struct stat *buf, void *ubuf) { struct l_stat64 lbuf; bzero(&lbuf, sizeof(lbuf)); lbuf.st_dev = dev_to_ldev(buf->st_dev); lbuf.st_ino = buf->st_ino; lbuf.st_mode = buf->st_mode; lbuf.st_nlink = buf->st_nlink; lbuf.st_uid = buf->st_uid; lbuf.st_gid = buf->st_gid; lbuf.st_rdev = buf->st_rdev; lbuf.st_size = buf->st_size; lbuf.st_atim.tv_sec = buf->st_atim.tv_sec; lbuf.st_atim.tv_nsec = buf->st_atim.tv_nsec; lbuf.st_mtim.tv_sec = buf->st_mtim.tv_sec; lbuf.st_mtim.tv_nsec = buf->st_mtim.tv_nsec; lbuf.st_ctim.tv_sec = buf->st_ctim.tv_sec; lbuf.st_ctim.tv_nsec = buf->st_ctim.tv_nsec; lbuf.st_blksize = buf->st_blksize; lbuf.st_blocks = buf->st_blocks; /* * The __st_ino field makes all the difference. In the Linux kernel * it is conditionally compiled based on STAT64_HAS_BROKEN_ST_INO, * but without the assignment to __st_ino the runtime linker refuses * to mmap(2) any shared libraries. I guess it's broken alright :-) */ lbuf.__st_ino = buf->st_ino; return (copyout(&lbuf, ubuf, sizeof(lbuf))); } int linux_stat64(struct thread *td, struct linux_stat64_args *args) { struct stat buf; char *filename; int error; if (!LUSECONVPATH(td)) { error = linux_kern_stat(td, args->filename, UIO_USERSPACE, &buf); } else { LCONVPATHEXIST(td, args->filename, &filename); error = linux_kern_stat(td, filename, UIO_SYSSPACE, &buf); LFREEPATH(filename); } if (error) return (error); return (stat64_copyout(&buf, args->statbuf)); } int linux_lstat64(struct thread *td, struct linux_lstat64_args *args) { struct stat sb; char *filename; int error; if (!LUSECONVPATH(td)) { error = linux_kern_lstat(td, args->filename, UIO_USERSPACE, &sb); } else { LCONVPATHEXIST(td, args->filename, &filename); error = linux_kern_lstat(td, filename, UIO_SYSSPACE, &sb); LFREEPATH(filename); } if (error) return (error); return (stat64_copyout(&sb, args->statbuf)); } int linux_fstat64(struct thread *td, struct linux_fstat64_args *args) { struct stat buf; int error; error = kern_fstat(td, args->fd, &buf); translate_fd_major_minor(td, args->fd, &buf); if (!error) error = stat64_copyout(&buf, args->statbuf); return (error); } int linux_fstatat64(struct thread *td, struct linux_fstatat64_args *args) { char *path; int error, dfd, flag; struct stat buf; if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW) return (EINVAL); flag = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) ? AT_SYMLINK_NOFOLLOW : 0; dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; if (!LUSECONVPATH(td)) { error = linux_kern_statat(td, flag, dfd, args->pathname, UIO_USERSPACE, &buf); } else { LCONVPATHEXIST_AT(td, args->pathname, &path, dfd); error = linux_kern_statat(td, flag, dfd, path, UIO_SYSSPACE, &buf); LFREEPATH(path); } if (error == 0) error = stat64_copyout(&buf, args->statbuf); return (error); } #else /* __amd64__ && !COMPAT_LINUX32 */ int linux_newfstatat(struct thread *td, struct linux_newfstatat_args *args) { char *path; int error, dfd, flag; struct stat buf; if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW) return (EINVAL); flag = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) ? AT_SYMLINK_NOFOLLOW : 0; dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; if (!LUSECONVPATH(td)) { error = linux_kern_statat(td, flag, dfd, args->pathname, UIO_USERSPACE, &buf); } else { LCONVPATHEXIST_AT(td, args->pathname, &path, dfd); error = linux_kern_statat(td, flag, dfd, path, UIO_SYSSPACE, &buf); LFREEPATH(path); } if (error == 0) error = newstat_copyout(&buf, args->statbuf); return (error); } #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ int linux_syncfs(struct thread *td, struct linux_syncfs_args *args) { struct mount *mp; struct vnode *vp; int error, save; error = fgetvp(td, args->fd, &cap_fsync_rights, &vp); if (error != 0) /* * Linux syncfs() returns only EBADF, however fgetvp() * can return EINVAL in case of file descriptor does * not represent a vnode. XXX. */ return (error); mp = vp->v_mount; mtx_lock(&mountlist_mtx); error = vfs_busy(mp, MBF_MNTLSTLOCK); if (error != 0) { /* See comment above. */ mtx_unlock(&mountlist_mtx); goto out; } if ((mp->mnt_flag & MNT_RDONLY) == 0 && vn_start_write(NULL, &mp, V_NOWAIT) == 0) { save = curthread_pflags_set(TDP_SYNCIO); vfs_periodic(mp, MNT_NOWAIT); VFS_SYNC(mp, MNT_NOWAIT); curthread_pflags_restore(save); vn_finished_write(mp); } vfs_unbusy(mp); out: vrele(vp); return (error); } Index: head/sys/compat/linux/linux_util.c =================================================================== --- head/sys/compat/linux/linux_util.c (revision 366898) +++ head/sys/compat/linux/linux_util.c (revision 366899) @@ -1,282 +1,301 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1994 Christos Zoulas * Copyright (c) 1995 Frank van der Linden * Copyright (c) 1995 Scott Bartram * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * from: svr4_util.c,v 1.5 1995/01/22 23:44:50 christos Exp */ #include __FBSDID("$FreeBSD$"); #include #include +#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include MALLOC_DEFINE(M_LINUX, "linux", "Linux mode structures"); MALLOC_DEFINE(M_EPOLL, "lepoll", "Linux events structures"); MALLOC_DEFINE(M_FUTEX, "futex", "Linux futexes"); MALLOC_DEFINE(M_FUTEX_WP, "futex wp", "Linux futex waiting proc"); char linux_emul_path[MAXPATHLEN] = "/compat/linux"; SYSCTL_STRING(_compat_linux, OID_AUTO, emul_path, CTLFLAG_RWTUN, linux_emul_path, sizeof(linux_emul_path), "Linux runtime environment path"); /* * Search an alternate path before passing pathname arguments on to * system calls. Useful for keeping a separate 'emulation tree'. * * If cflag is set, we check if an attempt can be made to create the * named file, i.e. we check if the directory it should be in exists. */ int linux_emul_convpath(struct thread *td, const char *path, enum uio_seg pathseg, char **pbuf, int cflag, int dfd) { int retval; retval = kern_alternate_path(td, linux_emul_path, path, pathseg, pbuf, cflag, dfd); return (retval); } void linux_msg(const struct thread *td, const char *fmt, ...) { va_list ap; struct proc *p; if (linux_debug == 0) return; p = td->td_proc; printf("linux: pid %d (%s): ", (int)p->p_pid, p->p_comm); va_start(ap, fmt); vprintf(fmt, ap); va_end(ap); printf("\n"); } struct device_element { TAILQ_ENTRY(device_element) list; struct linux_device_handler entry; }; static TAILQ_HEAD(, device_element) devices = TAILQ_HEAD_INITIALIZER(devices); static struct linux_device_handler null_handler = { "mem", "mem", "null", "null", 1, 3, 1}; DATA_SET(linux_device_handler_set, null_handler); char * linux_driver_get_name_dev(device_t dev) { struct device_element *de; const char *device_name = device_get_name(dev); if (device_name == NULL) return (NULL); TAILQ_FOREACH(de, &devices, list) { if (strcmp(device_name, de->entry.bsd_driver_name) == 0) return (de->entry.linux_driver_name); } return (NULL); } int linux_driver_get_major_minor(const char *node, int *major, int *minor) { struct device_element *de; unsigned long devno; size_t sz; if (node == NULL || major == NULL || minor == NULL) return (1); sz = sizeof("pts/") - 1; if (strncmp(node, "pts/", sz) == 0 && node[sz] != '\0') { /* * Linux checks major and minors of the slave device * to make sure it's a pty device, so let's make him * believe it is. */ devno = strtoul(node + sz, NULL, 10); *major = 136 + (devno / 256); *minor = devno % 256; return (0); } sz = sizeof("dri/card") - 1; if (strncmp(node, "dri/card", sz) == 0 && node[sz] != '\0') { devno = strtoul(node + sz, NULL, 10); *major = 226 + (devno / 256); *minor = devno % 256; return (0); } sz = sizeof("dri/controlD") - 1; if (strncmp(node, "dri/controlD", sz) == 0 && node[sz] != '\0') { devno = strtoul(node + sz, NULL, 10); *major = 226 + (devno / 256); *minor = devno % 256; return (0); } sz = sizeof("dri/renderD") - 1; if (strncmp(node, "dri/renderD", sz) == 0 && node[sz] != '\0') { devno = strtoul(node + sz, NULL, 10); *major = 226 + (devno / 256); *minor = devno % 256; return (0); } sz = sizeof("drm/") - 1; if (strncmp(node, "drm/", sz) == 0 && node[sz] != '\0') { devno = strtoul(node + sz, NULL, 10); *major = 226 + (devno / 256); *minor = devno % 256; return (0); } TAILQ_FOREACH(de, &devices, list) { if (strcmp(node, de->entry.bsd_device_name) == 0) { *major = de->entry.linux_major; *minor = de->entry.linux_minor; return (0); } } return (1); +} + +int +linux_vn_get_major_minor(const struct vnode *vp, int *major, int *minor) +{ + int error; + + if (vp->v_type != VCHR) + return (ENOTBLK); + dev_lock(); + if (vp->v_rdev == NULL) { + dev_unlock(); + return (ENXIO); + } + error = linux_driver_get_major_minor(devtoname(vp->v_rdev), + major, minor); + dev_unlock(); + return (error); } char * linux_get_char_devices() { struct device_element *de; char *temp, *string, *last; char formated[256]; int current_size = 0, string_size = 1024; string = malloc(string_size, M_LINUX, M_WAITOK); string[0] = '\000'; last = ""; TAILQ_FOREACH(de, &devices, list) { if (!de->entry.linux_char_device) continue; temp = string; if (strcmp(last, de->entry.bsd_driver_name) != 0) { last = de->entry.bsd_driver_name; snprintf(formated, sizeof(formated), "%3d %s\n", de->entry.linux_major, de->entry.linux_device_name); if (strlen(formated) + current_size >= string_size) { string_size *= 2; string = malloc(string_size, M_LINUX, M_WAITOK); bcopy(temp, string, current_size); free(temp, M_LINUX); } strcat(string, formated); current_size = strlen(string); } } return (string); } void linux_free_get_char_devices(char *string) { free(string, M_LINUX); } static int linux_major_starting = 200; int linux_device_register_handler(struct linux_device_handler *d) { struct device_element *de; if (d == NULL) return (EINVAL); de = malloc(sizeof(*de), M_LINUX, M_WAITOK); if (d->linux_major < 0) { d->linux_major = linux_major_starting++; } bcopy(d, &de->entry, sizeof(*d)); /* Add the element to the list, sorted on span. */ TAILQ_INSERT_TAIL(&devices, de, list); return (0); } int linux_device_unregister_handler(struct linux_device_handler *d) { struct device_element *de; if (d == NULL) return (EINVAL); TAILQ_FOREACH(de, &devices, list) { if (bcmp(d, &de->entry, sizeof(*d)) == 0) { TAILQ_REMOVE(&devices, de, list); free(de, M_LINUX); return (0); } } return (EINVAL); } Index: head/sys/compat/linux/linux_util.h =================================================================== --- head/sys/compat/linux/linux_util.h (revision 366898) +++ head/sys/compat/linux/linux_util.h (revision 366899) @@ -1,157 +1,158 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1994 Christos Zoulas * Copyright (c) 1995 Frank van der Linden * Copyright (c) 1995 Scott Bartram * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp * from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp * $FreeBSD$ */ #ifndef _LINUX_UTIL_H_ #define _LINUX_UTIL_H_ #include #include #include #include #include #include #include #include MALLOC_DECLARE(M_LINUX); MALLOC_DECLARE(M_EPOLL); MALLOC_DECLARE(M_FUTEX); MALLOC_DECLARE(M_FUTEX_WP); extern char linux_emul_path[]; extern int linux_use_emul_path; int linux_emul_convpath(struct thread *, const char *, enum uio_seg, char **, int, int); #define LUSECONVPATH(td) atomic_load_int(&linux_use_emul_path) #define LCONVPATH_AT(td, upath, pathp, i, dfd) \ do { \ int _error; \ \ _error = linux_emul_convpath(td, upath, UIO_USERSPACE, \ pathp, i, dfd); \ if (*(pathp) == NULL) \ return (_error); \ } while (0) #define LCONVPATH(td, upath, pathp, i) \ LCONVPATH_AT(td, upath, pathp, i, AT_FDCWD) #define LCONVPATHEXIST(td, upath, pathp) LCONVPATH(td, upath, pathp, 0) #define LCONVPATHEXIST_AT(td, upath, pathp, dfd) LCONVPATH_AT(td, upath, pathp, 0, dfd) #define LCONVPATHCREAT(td, upath, pathp) LCONVPATH(td, upath, pathp, 1) #define LCONVPATHCREAT_AT(td, upath, pathp, dfd) LCONVPATH_AT(td, upath, pathp, 1, dfd) #define LFREEPATH(path) free(path, M_TEMP) #define DUMMY(s) \ LIN_SDT_PROBE_DEFINE0(dummy, s, entry); \ LIN_SDT_PROBE_DEFINE0(dummy, s, not_implemented); \ LIN_SDT_PROBE_DEFINE1(dummy, s, return, "int"); \ int \ linux_ ## s(struct thread *td, struct linux_ ## s ## _args *args) \ { \ static pid_t pid; \ \ LIN_SDT_PROBE0(dummy, s, entry); \ \ if (pid != td->td_proc->p_pid) { \ linux_msg(td, "syscall %s not implemented", #s); \ LIN_SDT_PROBE0(dummy, s, not_implemented); \ pid = td->td_proc->p_pid; \ }; \ \ LIN_SDT_PROBE1(dummy, s, return, ENOSYS); \ return (ENOSYS); \ } \ struct __hack /* * This is for the syscalls that are not even yet implemented in Linux. * * They're marked as UNIMPL in syscall.master so it will * have nosys record in linux_sysent[]. */ #define UNIMPLEMENTED(s) void linux_msg(const struct thread *td, const char *fmt, ...) __printflike(2, 3); struct linux_device_handler { char *bsd_driver_name; char *linux_driver_name; char *bsd_device_name; char *linux_device_name; int linux_major; int linux_minor; int linux_char_device; }; int linux_device_register_handler(struct linux_device_handler *h); int linux_device_unregister_handler(struct linux_device_handler *h); char *linux_driver_get_name_dev(device_t dev); int linux_driver_get_major_minor(const char *node, int *major, int *minor); +int linux_vn_get_major_minor(const struct vnode *vn, int *major, int *minor); char *linux_get_char_devices(void); void linux_free_get_char_devices(char *string); #if defined(KTR) #define KTR_LINUX KTR_SUBSYS #define LINUX_CTRFMT(nm, fmt) #nm"("fmt")" #define LINUX_CTR6(f, m, p1, p2, p3, p4, p5, p6) do { \ CTR6(KTR_LINUX, LINUX_CTRFMT(f, m), \ p1, p2, p3, p4, p5, p6); \ } while (0) #define LINUX_CTR(f) LINUX_CTR6(f, "", 0, 0, 0, 0, 0, 0) #define LINUX_CTR0(f, m) LINUX_CTR6(f, m, 0, 0, 0, 0, 0, 0) #define LINUX_CTR1(f, m, p1) LINUX_CTR6(f, m, p1, 0, 0, 0, 0, 0) #define LINUX_CTR2(f, m, p1, p2) LINUX_CTR6(f, m, p1, p2, 0, 0, 0, 0) #define LINUX_CTR3(f, m, p1, p2, p3) LINUX_CTR6(f, m, p1, p2, p3, 0, 0, 0) #define LINUX_CTR4(f, m, p1, p2, p3, p4) LINUX_CTR6(f, m, p1, p2, p3, p4, 0, 0) #define LINUX_CTR5(f, m, p1, p2, p3, p4, p5) LINUX_CTR6(f, m, p1, p2, p3, p4, p5, 0) #else #define LINUX_CTR(f) #define LINUX_CTR0(f, m) #define LINUX_CTR1(f, m, p1) #define LINUX_CTR2(f, m, p1, p2) #define LINUX_CTR3(f, m, p1, p2, p3) #define LINUX_CTR4(f, m, p1, p2, p3, p4) #define LINUX_CTR5(f, m, p1, p2, p3, p4, p5) #define LINUX_CTR6(f, m, p1, p2, p3, p4, p5, p6) #endif #endif /* !_LINUX_UTIL_H_ */