2 * Copyright (c) 1994-1995 Søren Schmidt
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include "opt_compat.h"
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/capsicum.h>
38 #include <sys/dirent.h>
39 #include <sys/fcntl.h>
41 #include <sys/filedesc.h>
43 #include <sys/malloc.h>
44 #include <sys/mount.h>
45 #include <sys/mutex.h>
46 #include <sys/namei.h>
50 #include <sys/syscallsubr.h>
51 #include <sys/sysproto.h>
53 #include <sys/unistd.h>
54 #include <sys/vnode.h>
56 #include <security/mac/mac_framework.h>
58 #include <ufs/ufs/extattr.h>
59 #include <ufs/ufs/quota.h>
60 #include <ufs/ufs/ufsmount.h>
63 #include <machine/../linux32/linux.h>
64 #include <machine/../linux32/linux32_proto.h>
66 #include <machine/../linux/linux.h>
67 #include <machine/../linux/linux_proto.h>
69 #include <compat/linux/linux_misc.h>
70 #include <compat/linux/linux_util.h>
71 #include <compat/linux/linux_file.h>
74 linux_creat(struct thread *td, struct linux_creat_args *args)
79 LCONVPATHEXIST(td, args->path, &path);
83 printf(ARGS(creat, "%s, %d"), path, args->mode);
85 error = kern_openat(td, AT_FDCWD, path, UIO_SYSSPACE,
86 O_WRONLY | O_CREAT | O_TRUNC, args->mode);
93 linux_common_open(struct thread *td, int dirfd, char *path, int l_flags, int mode)
96 struct proc *p = td->td_proc;
102 switch (l_flags & LINUX_O_ACCMODE) {
104 bsd_flags |= O_WRONLY;
110 bsd_flags |= O_RDONLY;
112 if (l_flags & LINUX_O_NDELAY)
113 bsd_flags |= O_NONBLOCK;
114 if (l_flags & LINUX_O_APPEND)
115 bsd_flags |= O_APPEND;
116 if (l_flags & LINUX_O_SYNC)
117 bsd_flags |= O_FSYNC;
118 if (l_flags & LINUX_O_NONBLOCK)
119 bsd_flags |= O_NONBLOCK;
120 if (l_flags & LINUX_FASYNC)
121 bsd_flags |= O_ASYNC;
122 if (l_flags & LINUX_O_CREAT)
123 bsd_flags |= O_CREAT;
124 if (l_flags & LINUX_O_TRUNC)
125 bsd_flags |= O_TRUNC;
126 if (l_flags & LINUX_O_EXCL)
128 if (l_flags & LINUX_O_NOCTTY)
129 bsd_flags |= O_NOCTTY;
130 if (l_flags & LINUX_O_DIRECT)
131 bsd_flags |= O_DIRECT;
132 if (l_flags & LINUX_O_NOFOLLOW)
133 bsd_flags |= O_NOFOLLOW;
134 if (l_flags & LINUX_O_DIRECTORY)
135 bsd_flags |= O_DIRECTORY;
136 /* XXX LINUX_O_NOATIME: unable to be easily implemented. */
138 error = kern_openat(td, dirfd, path, UIO_SYSSPACE, bsd_flags, mode);
141 fd = td->td_retval[0];
143 * XXX In between kern_open() and fget(), another process
144 * having the same filedesc could use that fd without
147 error = fget(td, fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
149 sx_slock(&proctree_lock);
151 if (!(bsd_flags & O_NOCTTY) &&
152 SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) {
154 sx_unlock(&proctree_lock);
155 /* XXXPJD: Verify if TIOCSCTTY is allowed. */
156 if (fp->f_type == DTYPE_VNODE)
157 (void) fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0,
161 sx_sunlock(&proctree_lock);
165 * XXX as above, fdrop()/kern_close() pair is racy.
174 printf(LMSG("open returns error %d"), error);
181 linux_openat(struct thread *td, struct linux_openat_args *args)
186 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
187 if (args->flags & LINUX_O_CREAT)
188 LCONVPATH_AT(td, args->filename, &path, 1, dfd);
190 LCONVPATH_AT(td, args->filename, &path, 0, dfd);
193 printf(ARGS(openat, "%i, %s, 0x%x, 0x%x"), args->dfd,
194 path, args->flags, args->mode);
196 return (linux_common_open(td, dfd, path, args->flags, args->mode));
200 linux_open(struct thread *td, struct linux_open_args *args)
204 if (args->flags & LINUX_O_CREAT)
205 LCONVPATHCREAT(td, args->path, &path);
207 LCONVPATHEXIST(td, args->path, &path);
211 printf(ARGS(open, "%s, 0x%x, 0x%x"),
212 path, args->flags, args->mode);
215 return (linux_common_open(td, AT_FDCWD, path, args->flags, args->mode));
219 linux_lseek(struct thread *td, struct linux_lseek_args *args)
222 struct lseek_args /* {
232 printf(ARGS(lseek, "%d, %ld, %d"),
233 args->fdes, (long)args->off, args->whence);
235 tmp_args.fd = args->fdes;
236 tmp_args.offset = (off_t)args->off;
237 tmp_args.whence = args->whence;
238 error = sys_lseek(td, &tmp_args);
243 linux_llseek(struct thread *td, struct linux_llseek_args *args)
245 struct lseek_args bsd_args;
251 printf(ARGS(llseek, "%d, %d:%d, %d"),
252 args->fd, args->ohigh, args->olow, args->whence);
254 off = (args->olow) | (((off_t) args->ohigh) << 32);
256 bsd_args.fd = args->fd;
257 bsd_args.offset = off;
258 bsd_args.whence = args->whence;
260 if ((error = sys_lseek(td, &bsd_args)))
263 if ((error = copyout(td->td_retval, args->res, sizeof (off_t))))
266 td->td_retval[0] = 0;
271 linux_readdir(struct thread *td, struct linux_readdir_args *args)
273 struct linux_getdents_args lda;
276 lda.dent = args->dent;
278 return linux_getdents(td, &lda);
282 * Note that linux_getdents(2) and linux_getdents64(2) have the same
283 * arguments. They only differ in the definition of struct dirent they
284 * operate on. We use this to common the code, with the exception of
285 * accessing struct dirent. Note that linux_readdir(2) is implemented
286 * by means of linux_getdents(2). In this case we never operate on
287 * struct dirent64 and thus don't need to handle it...
294 char d_name[LINUX_NAME_MAX + 1];
302 char d_name[LINUX_NAME_MAX + 1];
306 * Linux uses the last byte in the dirent buffer to store d_type,
307 * at least glibc-2.7 requires it. That is why l_dirent is padded with 2 bytes.
309 #define LINUX_RECLEN(namlen) \
310 roundup((offsetof(struct l_dirent, d_name) + (namlen) + 2), \
313 #define LINUX_RECLEN64(namlen) \
314 roundup((offsetof(struct l_dirent64, d_name) + (namlen) + 1), \
317 #define LINUX_MAXRECLEN max(LINUX_RECLEN(LINUX_NAME_MAX), \
318 LINUX_RECLEN64(LINUX_NAME_MAX))
319 #define LINUX_DIRBLKSIZ 512
322 getdents_common(struct thread *td, struct linux_getdents64_args *args,
327 caddr_t inp, buf; /* BSD-format */
328 int len, reclen; /* BSD-format */
329 caddr_t outp; /* Linux-format */
330 int resid, linuxreclen=0; /* Linux-format */
331 caddr_t lbuf; /* Linux-format */
337 struct l_dirent *linux_dirent;
338 struct l_dirent64 *linux_dirent64;
339 int buflen, error, eofflag, nbytes, justone;
340 u_long *cookies = NULL, *cookiep;
343 nbytes = args->count;
345 /* readdir(2) case. Always struct dirent. */
348 nbytes = sizeof(*linux_dirent);
353 error = getvnode(td->td_proc->p_fd, args->fd,
354 cap_rights_init(&rights, CAP_READ), &fp);
358 if ((fp->f_flag & FREAD) == 0) {
363 off = foffset_lock(fp, 0);
365 if (vp->v_type != VDIR) {
366 foffset_unlock(fp, off, 0);
372 buflen = max(LINUX_DIRBLKSIZ, nbytes);
373 buflen = min(buflen, MAXBSIZE);
374 buf = malloc(buflen, M_TEMP, M_WAITOK);
375 lbuf = malloc(LINUX_MAXRECLEN, M_TEMP, M_WAITOK | M_ZERO);
376 vn_lock(vp, LK_SHARED | LK_RETRY);
379 aiov.iov_len = buflen;
380 auio.uio_iov = &aiov;
382 auio.uio_rw = UIO_READ;
383 auio.uio_segflg = UIO_SYSSPACE;
385 auio.uio_resid = buflen;
386 auio.uio_offset = off;
390 * Do directory search MAC check using non-cached credentials.
392 if ((error = mac_vnode_check_readdir(td->td_ucred, vp)))
395 if ((error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies,
400 outp = (caddr_t)args->dirent;
402 if ((len = buflen - auio.uio_resid) <= 0)
409 * When using cookies, the vfs has the option of reading from
410 * a different offset than that supplied (UFS truncates the
411 * offset to a block boundary to make sure that it never reads
412 * partway through a directory entry, even if the directory
413 * has been compacted).
415 while (len > 0 && ncookies > 0 && *cookiep <= off) {
416 bdp = (struct dirent *) inp;
417 len -= bdp->d_reclen;
418 inp += bdp->d_reclen;
425 if (cookiep && ncookies == 0)
427 bdp = (struct dirent *) inp;
428 reclen = bdp->d_reclen;
434 if (bdp->d_fileno == 0) {
446 linuxreclen = (is64bit)
447 ? LINUX_RECLEN64(bdp->d_namlen)
448 : LINUX_RECLEN(bdp->d_namlen);
450 if (reclen > len || resid < linuxreclen) {
456 /* readdir(2) case. */
457 linux_dirent = (struct l_dirent*)lbuf;
458 linux_dirent->d_ino = bdp->d_fileno;
459 linux_dirent->d_off = (l_off_t)linuxreclen;
460 linux_dirent->d_reclen = (l_ushort)bdp->d_namlen;
461 strlcpy(linux_dirent->d_name, bdp->d_name,
462 linuxreclen - offsetof(struct l_dirent, d_name));
463 error = copyout(linux_dirent, outp, linuxreclen);
466 linux_dirent64 = (struct l_dirent64*)lbuf;
467 linux_dirent64->d_ino = bdp->d_fileno;
468 linux_dirent64->d_off = (cookiep)
470 : (l_off_t)(off + reclen);
471 linux_dirent64->d_reclen = (l_ushort)linuxreclen;
472 linux_dirent64->d_type = bdp->d_type;
473 strlcpy(linux_dirent64->d_name, bdp->d_name,
474 linuxreclen - offsetof(struct l_dirent64, d_name));
475 error = copyout(linux_dirent64, outp, linuxreclen);
476 } else if (!justone) {
477 linux_dirent = (struct l_dirent*)lbuf;
478 linux_dirent->d_ino = bdp->d_fileno;
479 linux_dirent->d_off = (cookiep)
481 : (l_off_t)(off + reclen);
482 linux_dirent->d_reclen = (l_ushort)linuxreclen;
484 * Copy d_type to last byte of l_dirent buffer
486 lbuf[linuxreclen-1] = bdp->d_type;
487 strlcpy(linux_dirent->d_name, bdp->d_name,
488 linuxreclen - offsetof(struct l_dirent, d_name)-1);
489 error = copyout(linux_dirent, outp, linuxreclen);
503 resid -= linuxreclen;
509 if (outp == (caddr_t)args->dirent) {
515 nbytes = resid + linuxreclen;
518 td->td_retval[0] = nbytes - resid;
521 free(cookies, M_TEMP);
524 foffset_unlock(fp, off, 0);
532 linux_getdents(struct thread *td, struct linux_getdents_args *args)
536 if (ldebug(getdents))
537 printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count);
540 return (getdents_common(td, (struct linux_getdents64_args*)args, 0));
544 linux_getdents64(struct thread *td, struct linux_getdents64_args *args)
548 if (ldebug(getdents64))
549 printf(ARGS(getdents64, "%d, *, %d"), args->fd, args->count);
552 return (getdents_common(td, args, 1));
556 * These exist mainly for hooks for doing /compat/linux translation.
560 linux_access(struct thread *td, struct linux_access_args *args)
565 /* linux convention */
566 if (args->amode & ~(F_OK | X_OK | W_OK | R_OK))
569 LCONVPATHEXIST(td, args->path, &path);
573 printf(ARGS(access, "%s, %d"), path, args->amode);
575 error = kern_accessat(td, AT_FDCWD, path, UIO_SYSSPACE, 0,
583 linux_faccessat(struct thread *td, struct linux_faccessat_args *args)
586 int error, dfd, flag;
588 if (args->flag & ~LINUX_AT_EACCESS)
590 /* linux convention */
591 if (args->amode & ~(F_OK | X_OK | W_OK | R_OK))
594 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
595 LCONVPATHEXIST_AT(td, args->filename, &path, dfd);
599 printf(ARGS(access, "%s, %d"), path, args->amode);
602 flag = (args->flag & LINUX_AT_EACCESS) == 0 ? 0 : AT_EACCESS;
603 error = kern_accessat(td, dfd, path, UIO_SYSSPACE, flag, args->amode);
610 linux_unlink(struct thread *td, struct linux_unlink_args *args)
616 LCONVPATHEXIST(td, args->path, &path);
620 printf(ARGS(unlink, "%s"), path);
623 error = kern_unlinkat(td, AT_FDCWD, path, UIO_SYSSPACE, 0);
624 if (error == EPERM) {
625 /* Introduce POSIX noncompliant behaviour of Linux */
626 if (kern_statat(td, 0, AT_FDCWD, path, UIO_SYSSPACE, &st,
628 if (S_ISDIR(st.st_mode))
637 linux_unlinkat(struct thread *td, struct linux_unlinkat_args *args)
643 if (args->flag & ~LINUX_AT_REMOVEDIR)
646 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
647 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd);
650 if (ldebug(unlinkat))
651 printf(ARGS(unlinkat, "%s"), path);
654 if (args->flag & LINUX_AT_REMOVEDIR)
655 error = kern_rmdirat(td, dfd, path, UIO_SYSSPACE);
657 error = kern_unlinkat(td, dfd, path, UIO_SYSSPACE, 0);
658 if (error == EPERM && !(args->flag & LINUX_AT_REMOVEDIR)) {
659 /* Introduce POSIX noncompliant behaviour of Linux */
660 if (kern_statat(td, AT_SYMLINK_NOFOLLOW, dfd, path,
661 UIO_SYSSPACE, &st, NULL) == 0 && S_ISDIR(st.st_mode))
668 linux_chdir(struct thread *td, struct linux_chdir_args *args)
673 LCONVPATHEXIST(td, args->path, &path);
677 printf(ARGS(chdir, "%s"), path);
679 error = kern_chdir(td, path, UIO_SYSSPACE);
685 linux_chmod(struct thread *td, struct linux_chmod_args *args)
690 LCONVPATHEXIST(td, args->path, &path);
694 printf(ARGS(chmod, "%s, %d"), path, args->mode);
696 error = kern_fchmodat(td, AT_FDCWD, path, UIO_SYSSPACE,
703 linux_fchmodat(struct thread *td, struct linux_fchmodat_args *args)
708 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
709 LCONVPATHEXIST_AT(td, args->filename, &path, dfd);
712 if (ldebug(fchmodat))
713 printf(ARGS(fchmodat, "%s, %d"), path, args->mode);
716 error = kern_fchmodat(td, dfd, path, UIO_SYSSPACE, args->mode, 0);
722 linux_mkdir(struct thread *td, struct linux_mkdir_args *args)
727 LCONVPATHCREAT(td, args->path, &path);
731 printf(ARGS(mkdir, "%s, %d"), path, args->mode);
733 error = kern_mkdirat(td, AT_FDCWD, path, UIO_SYSSPACE, args->mode);
739 linux_mkdirat(struct thread *td, struct linux_mkdirat_args *args)
744 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
745 LCONVPATHCREAT_AT(td, args->pathname, &path, dfd);
749 printf(ARGS(mkdirat, "%s, %d"), path, args->mode);
751 error = kern_mkdirat(td, dfd, path, UIO_SYSSPACE, args->mode);
757 linux_rmdir(struct thread *td, struct linux_rmdir_args *args)
762 LCONVPATHEXIST(td, args->path, &path);
766 printf(ARGS(rmdir, "%s"), path);
768 error = kern_rmdirat(td, AT_FDCWD, path, UIO_SYSSPACE);
774 linux_rename(struct thread *td, struct linux_rename_args *args)
779 LCONVPATHEXIST(td, args->from, &from);
780 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */
781 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD);
789 printf(ARGS(rename, "%s, %s"), from, to);
791 error = kern_renameat(td, AT_FDCWD, from, AT_FDCWD, to, UIO_SYSSPACE);
798 linux_renameat(struct thread *td, struct linux_renameat_args *args)
801 int error, olddfd, newdfd;
803 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd;
804 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd;
805 LCONVPATHEXIST_AT(td, args->oldname, &from, olddfd);
806 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */
807 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd);
814 if (ldebug(renameat))
815 printf(ARGS(renameat, "%s, %s"), from, to);
817 error = kern_renameat(td, olddfd, from, newdfd, to, UIO_SYSSPACE);
824 linux_symlink(struct thread *td, struct linux_symlink_args *args)
829 LCONVPATHEXIST(td, args->path, &path);
830 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
831 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD);
839 printf(ARGS(symlink, "%s, %s"), path, to);
841 error = kern_symlinkat(td, path, AT_FDCWD, to, UIO_SYSSPACE);
848 linux_symlinkat(struct thread *td, struct linux_symlinkat_args *args)
853 dfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd;
854 LCONVPATHEXIST_AT(td, args->oldname, &path, dfd);
855 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
856 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, dfd);
863 if (ldebug(symlinkat))
864 printf(ARGS(symlinkat, "%s, %s"), path, to);
867 error = kern_symlinkat(td, path, dfd, to, UIO_SYSSPACE);
874 linux_readlink(struct thread *td, struct linux_readlink_args *args)
879 LCONVPATHEXIST(td, args->name, &name);
882 if (ldebug(readlink))
883 printf(ARGS(readlink, "%s, %p, %d"), name, (void *)args->buf,
886 error = kern_readlinkat(td, AT_FDCWD, name, UIO_SYSSPACE,
887 args->buf, UIO_USERSPACE, args->count);
893 linux_readlinkat(struct thread *td, struct linux_readlinkat_args *args)
898 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
899 LCONVPATHEXIST_AT(td, args->path, &name, dfd);
902 if (ldebug(readlinkat))
903 printf(ARGS(readlinkat, "%s, %p, %d"), name, (void *)args->buf,
907 error = kern_readlinkat(td, dfd, name, UIO_SYSSPACE, args->buf,
908 UIO_USERSPACE, args->bufsiz);
914 linux_truncate(struct thread *td, struct linux_truncate_args *args)
919 LCONVPATHEXIST(td, args->path, &path);
922 if (ldebug(truncate))
923 printf(ARGS(truncate, "%s, %ld"), path, (long)args->length);
926 error = kern_truncate(td, path, UIO_SYSSPACE, args->length);
932 linux_truncate64(struct thread *td, struct linux_truncate64_args *args)
937 LCONVPATHEXIST(td, args->path, &path);
940 if (ldebug(truncate64))
941 printf(ARGS(truncate64, "%s, %jd"), path, args->length);
944 error = kern_truncate(td, path, UIO_SYSSPACE, args->length);
949 linux_ftruncate(struct thread *td, struct linux_ftruncate_args *args)
951 struct ftruncate_args /* {
958 nuap.length = args->length;
959 return (sys_ftruncate(td, &nuap));
963 linux_link(struct thread *td, struct linux_link_args *args)
968 LCONVPATHEXIST(td, args->path, &path);
969 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
970 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD);
978 printf(ARGS(link, "%s, %s"), path, to);
980 error = kern_linkat(td, AT_FDCWD, AT_FDCWD, path, to, UIO_SYSSPACE,
988 linux_linkat(struct thread *td, struct linux_linkat_args *args)
991 int error, olddfd, newdfd, follow;
993 if (args->flag & ~LINUX_AT_SYMLINK_FOLLOW)
996 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd;
997 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd;
998 LCONVPATHEXIST_AT(td, args->oldname, &path, olddfd);
999 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
1000 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd);
1008 printf(ARGS(linkat, "%i, %s, %i, %s, %i"), args->olddfd, path,
1009 args->newdfd, to, args->flag);
1012 follow = (args->flag & LINUX_AT_SYMLINK_FOLLOW) == 0 ? NOFOLLOW :
1014 error = kern_linkat(td, olddfd, newdfd, path, to, UIO_SYSSPACE, follow);
1021 linux_fdatasync(td, uap)
1023 struct linux_fdatasync_args *uap;
1025 struct fsync_args bsd;
1028 return sys_fsync(td, &bsd);
1032 linux_pread(td, uap)
1034 struct linux_pread_args *uap;
1036 struct pread_args bsd;
1037 cap_rights_t rights;
1043 bsd.nbyte = uap->nbyte;
1044 bsd.offset = uap->offset;
1046 error = sys_pread(td, &bsd);
1049 /* This seems to violate POSIX but linux does it */
1050 error = fgetvp(td, uap->fd,
1051 cap_rights_init(&rights, CAP_PREAD), &vp);
1054 if (vp->v_type == VDIR) {
1065 linux_pwrite(td, uap)
1067 struct linux_pwrite_args *uap;
1069 struct pwrite_args bsd;
1073 bsd.nbyte = uap->nbyte;
1074 bsd.offset = uap->offset;
1075 return sys_pwrite(td, &bsd);
1079 linux_mount(struct thread *td, struct linux_mount_args *args)
1081 struct ufs_args ufs;
1082 char fstypename[MFSNAMELEN];
1083 char mntonname[MNAMELEN], mntfromname[MNAMELEN];
1088 error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1,
1092 error = copyinstr(args->specialfile, mntfromname, MNAMELEN - 1, NULL);
1095 error = copyinstr(args->dir, mntonname, MNAMELEN - 1, NULL);
1101 printf(ARGS(mount, "%s, %s, %s"),
1102 fstypename, mntfromname, mntonname);
1105 if (strcmp(fstypename, "ext2") == 0) {
1106 strcpy(fstypename, "ext2fs");
1108 ufs.fspec = mntfromname;
1109 #define DEFAULT_ROOTID -2
1110 ufs.export.ex_root = DEFAULT_ROOTID;
1111 ufs.export.ex_flags =
1112 args->rwflag & LINUX_MS_RDONLY ? MNT_EXRDONLY : 0;
1113 } else if (strcmp(fstypename, "proc") == 0) {
1114 strcpy(fstypename, "linprocfs");
1116 } else if (strcmp(fstypename, "vfat") == 0) {
1117 strcpy(fstypename, "msdosfs");
1125 if ((args->rwflag & 0xffff0000) == 0xc0ed0000) {
1127 * Linux SYNC flag is not included; the closest equivalent
1128 * FreeBSD has is !ASYNC, which is our default.
1130 if (args->rwflag & LINUX_MS_RDONLY)
1131 fsflags |= MNT_RDONLY;
1132 if (args->rwflag & LINUX_MS_NOSUID)
1133 fsflags |= MNT_NOSUID;
1134 if (args->rwflag & LINUX_MS_NOEXEC)
1135 fsflags |= MNT_NOEXEC;
1136 if (args->rwflag & LINUX_MS_REMOUNT)
1137 fsflags |= MNT_UPDATE;
1140 if (strcmp(fstypename, "linprocfs") == 0) {
1141 error = kernel_vmount(fsflags,
1142 "fstype", fstypename,
1143 "fspath", mntonname,
1145 } else if (strcmp(fstypename, "msdosfs") == 0) {
1146 error = kernel_vmount(fsflags,
1147 "fstype", fstypename,
1148 "fspath", mntonname,
1149 "from", mntfromname,
1157 linux_oldumount(struct thread *td, struct linux_oldumount_args *args)
1159 struct linux_umount_args args2;
1161 args2.path = args->path;
1163 return (linux_umount(td, &args2));
1167 linux_umount(struct thread *td, struct linux_umount_args *args)
1169 struct unmount_args bsd;
1171 bsd.path = args->path;
1172 bsd.flags = args->flags; /* XXX correct? */
1173 return (sys_unmount(td, &bsd));
1177 * fcntl family of syscalls
1187 #if defined(__amd64__) && defined(COMPAT_LINUX32)
1193 linux_to_bsd_flock(struct l_flock *linux_flock, struct flock *bsd_flock)
1195 switch (linux_flock->l_type) {
1197 bsd_flock->l_type = F_RDLCK;
1200 bsd_flock->l_type = F_WRLCK;
1203 bsd_flock->l_type = F_UNLCK;
1206 bsd_flock->l_type = -1;
1209 bsd_flock->l_whence = linux_flock->l_whence;
1210 bsd_flock->l_start = (off_t)linux_flock->l_start;
1211 bsd_flock->l_len = (off_t)linux_flock->l_len;
1212 bsd_flock->l_pid = (pid_t)linux_flock->l_pid;
1213 bsd_flock->l_sysid = 0;
1217 bsd_to_linux_flock(struct flock *bsd_flock, struct l_flock *linux_flock)
1219 switch (bsd_flock->l_type) {
1221 linux_flock->l_type = LINUX_F_RDLCK;
1224 linux_flock->l_type = LINUX_F_WRLCK;
1227 linux_flock->l_type = LINUX_F_UNLCK;
1230 linux_flock->l_whence = bsd_flock->l_whence;
1231 linux_flock->l_start = (l_off_t)bsd_flock->l_start;
1232 linux_flock->l_len = (l_off_t)bsd_flock->l_len;
1233 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid;
1236 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1244 #if defined(__amd64__) && defined(COMPAT_LINUX32)
1250 linux_to_bsd_flock64(struct l_flock64 *linux_flock, struct flock *bsd_flock)
1252 switch (linux_flock->l_type) {
1254 bsd_flock->l_type = F_RDLCK;
1257 bsd_flock->l_type = F_WRLCK;
1260 bsd_flock->l_type = F_UNLCK;
1263 bsd_flock->l_type = -1;
1266 bsd_flock->l_whence = linux_flock->l_whence;
1267 bsd_flock->l_start = (off_t)linux_flock->l_start;
1268 bsd_flock->l_len = (off_t)linux_flock->l_len;
1269 bsd_flock->l_pid = (pid_t)linux_flock->l_pid;
1270 bsd_flock->l_sysid = 0;
1274 bsd_to_linux_flock64(struct flock *bsd_flock, struct l_flock64 *linux_flock)
1276 switch (bsd_flock->l_type) {
1278 linux_flock->l_type = LINUX_F_RDLCK;
1281 linux_flock->l_type = LINUX_F_WRLCK;
1284 linux_flock->l_type = LINUX_F_UNLCK;
1287 linux_flock->l_whence = bsd_flock->l_whence;
1288 linux_flock->l_start = (l_loff_t)bsd_flock->l_start;
1289 linux_flock->l_len = (l_loff_t)bsd_flock->l_len;
1290 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid;
1292 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1295 fcntl_common(struct thread *td, struct linux_fcntl64_args *args)
1297 struct l_flock linux_flock;
1298 struct flock bsd_flock;
1299 cap_rights_t rights;
1304 switch (args->cmd) {
1306 return (kern_fcntl(td, args->fd, F_DUPFD, args->arg));
1309 return (kern_fcntl(td, args->fd, F_GETFD, 0));
1312 return (kern_fcntl(td, args->fd, F_SETFD, args->arg));
1315 error = kern_fcntl(td, args->fd, F_GETFL, 0);
1316 result = td->td_retval[0];
1317 td->td_retval[0] = 0;
1318 if (result & O_RDONLY)
1319 td->td_retval[0] |= LINUX_O_RDONLY;
1320 if (result & O_WRONLY)
1321 td->td_retval[0] |= LINUX_O_WRONLY;
1322 if (result & O_RDWR)
1323 td->td_retval[0] |= LINUX_O_RDWR;
1324 if (result & O_NDELAY)
1325 td->td_retval[0] |= LINUX_O_NONBLOCK;
1326 if (result & O_APPEND)
1327 td->td_retval[0] |= LINUX_O_APPEND;
1328 if (result & O_FSYNC)
1329 td->td_retval[0] |= LINUX_O_SYNC;
1330 if (result & O_ASYNC)
1331 td->td_retval[0] |= LINUX_FASYNC;
1332 #ifdef LINUX_O_NOFOLLOW
1333 if (result & O_NOFOLLOW)
1334 td->td_retval[0] |= LINUX_O_NOFOLLOW;
1336 #ifdef LINUX_O_DIRECT
1337 if (result & O_DIRECT)
1338 td->td_retval[0] |= LINUX_O_DIRECT;
1344 if (args->arg & LINUX_O_NDELAY)
1346 if (args->arg & LINUX_O_APPEND)
1348 if (args->arg & LINUX_O_SYNC)
1350 if (args->arg & LINUX_FASYNC)
1352 #ifdef LINUX_O_NOFOLLOW
1353 if (args->arg & LINUX_O_NOFOLLOW)
1356 #ifdef LINUX_O_DIRECT
1357 if (args->arg & LINUX_O_DIRECT)
1360 return (kern_fcntl(td, args->fd, F_SETFL, arg));
1363 error = copyin((void *)args->arg, &linux_flock,
1364 sizeof(linux_flock));
1367 linux_to_bsd_flock(&linux_flock, &bsd_flock);
1368 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock);
1371 bsd_to_linux_flock(&bsd_flock, &linux_flock);
1372 return (copyout(&linux_flock, (void *)args->arg,
1373 sizeof(linux_flock)));
1376 error = copyin((void *)args->arg, &linux_flock,
1377 sizeof(linux_flock));
1380 linux_to_bsd_flock(&linux_flock, &bsd_flock);
1381 return (kern_fcntl(td, args->fd, F_SETLK,
1382 (intptr_t)&bsd_flock));
1384 case LINUX_F_SETLKW:
1385 error = copyin((void *)args->arg, &linux_flock,
1386 sizeof(linux_flock));
1389 linux_to_bsd_flock(&linux_flock, &bsd_flock);
1390 return (kern_fcntl(td, args->fd, F_SETLKW,
1391 (intptr_t)&bsd_flock));
1393 case LINUX_F_GETOWN:
1394 return (kern_fcntl(td, args->fd, F_GETOWN, 0));
1396 case LINUX_F_SETOWN:
1398 * XXX some Linux applications depend on F_SETOWN having no
1399 * significant effect for pipes (SIGIO is not delivered for
1400 * pipes under Linux-2.2.35 at least).
1402 error = fget(td, args->fd,
1403 cap_rights_init(&rights, CAP_FCNTL), &fp);
1406 if (fp->f_type == DTYPE_PIPE) {
1412 return (kern_fcntl(td, args->fd, F_SETOWN, args->arg));
1419 linux_fcntl(struct thread *td, struct linux_fcntl_args *args)
1421 struct linux_fcntl64_args args64;
1425 printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd);
1428 args64.fd = args->fd;
1429 args64.cmd = args->cmd;
1430 args64.arg = args->arg;
1431 return (fcntl_common(td, &args64));
1434 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1436 linux_fcntl64(struct thread *td, struct linux_fcntl64_args *args)
1438 struct l_flock64 linux_flock;
1439 struct flock bsd_flock;
1443 if (ldebug(fcntl64))
1444 printf(ARGS(fcntl64, "%d, %08x, *"), args->fd, args->cmd);
1447 switch (args->cmd) {
1448 case LINUX_F_GETLK64:
1449 error = copyin((void *)args->arg, &linux_flock,
1450 sizeof(linux_flock));
1453 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
1454 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock);
1457 bsd_to_linux_flock64(&bsd_flock, &linux_flock);
1458 return (copyout(&linux_flock, (void *)args->arg,
1459 sizeof(linux_flock)));
1461 case LINUX_F_SETLK64:
1462 error = copyin((void *)args->arg, &linux_flock,
1463 sizeof(linux_flock));
1466 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
1467 return (kern_fcntl(td, args->fd, F_SETLK,
1468 (intptr_t)&bsd_flock));
1470 case LINUX_F_SETLKW64:
1471 error = copyin((void *)args->arg, &linux_flock,
1472 sizeof(linux_flock));
1475 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
1476 return (kern_fcntl(td, args->fd, F_SETLKW,
1477 (intptr_t)&bsd_flock));
1480 return (fcntl_common(td, args));
1482 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1485 linux_chown(struct thread *td, struct linux_chown_args *args)
1490 LCONVPATHEXIST(td, args->path, &path);
1494 printf(ARGS(chown, "%s, %d, %d"), path, args->uid, args->gid);
1496 error = kern_fchownat(td, AT_FDCWD, path, UIO_SYSSPACE, args->uid,
1503 linux_fchownat(struct thread *td, struct linux_fchownat_args *args)
1506 int error, dfd, flag;
1508 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW)
1511 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
1512 LCONVPATHEXIST_AT(td, args->filename, &path, dfd);
1515 if (ldebug(fchownat))
1516 printf(ARGS(fchownat, "%s, %d, %d"), path, args->uid, args->gid);
1519 flag = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) == 0 ? 0 :
1520 AT_SYMLINK_NOFOLLOW;
1521 error = kern_fchownat(td, dfd, path, UIO_SYSSPACE, args->uid, args->gid,
1528 linux_lchown(struct thread *td, struct linux_lchown_args *args)
1533 LCONVPATHEXIST(td, args->path, &path);
1537 printf(ARGS(lchown, "%s, %d, %d"), path, args->uid, args->gid);
1539 error = kern_fchownat(td, AT_FDCWD, path, UIO_SYSSPACE, args->uid,
1540 args->gid, AT_SYMLINK_NOFOLLOW);
1546 convert_fadvice(int advice)
1549 case LINUX_POSIX_FADV_NORMAL:
1550 return (POSIX_FADV_NORMAL);
1551 case LINUX_POSIX_FADV_RANDOM:
1552 return (POSIX_FADV_RANDOM);
1553 case LINUX_POSIX_FADV_SEQUENTIAL:
1554 return (POSIX_FADV_SEQUENTIAL);
1555 case LINUX_POSIX_FADV_WILLNEED:
1556 return (POSIX_FADV_WILLNEED);
1557 case LINUX_POSIX_FADV_DONTNEED:
1558 return (POSIX_FADV_DONTNEED);
1559 case LINUX_POSIX_FADV_NOREUSE:
1560 return (POSIX_FADV_NOREUSE);
1567 linux_fadvise64(struct thread *td, struct linux_fadvise64_args *args)
1571 advice = convert_fadvice(args->advice);
1574 return (kern_posix_fadvise(td, args->fd, args->offset, args->len,
1579 linux_fadvise64_64(struct thread *td, struct linux_fadvise64_64_args *args)
1583 advice = convert_fadvice(args->advice);
1586 return (kern_posix_fadvise(td, args->fd, args->offset, args->len,
1591 linux_pipe(struct thread *td, struct linux_pipe_args *args)
1598 printf(ARGS(pipe, "*"));
1601 error = kern_pipe2(td, fildes, 0);
1605 /* XXX: Close descriptors on error. */
1606 return (copyout(fildes, args->pipefds, sizeof(fildes)));
1610 linux_pipe2(struct thread *td, struct linux_pipe2_args *args)
1617 printf(ARGS(pipe2, "*, %d"), args->flags);
1620 if ((args->flags & ~(LINUX_O_NONBLOCK | LINUX_O_CLOEXEC)) != 0)
1624 if ((args->flags & LINUX_O_NONBLOCK) != 0)
1625 flags |= O_NONBLOCK;
1626 if ((args->flags & LINUX_O_CLOEXEC) != 0)
1628 error = kern_pipe2(td, fildes, flags);
1632 /* XXX: Close descriptors on error. */
1633 return (copyout(fildes, args->pipefds, sizeof(fildes)));