2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 1994-1995 Søren Schmidt
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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>
57 #include <machine/../linux32/linux.h>
58 #include <machine/../linux32/linux32_proto.h>
60 #include <machine/../linux/linux.h>
61 #include <machine/../linux/linux_proto.h>
63 #include <compat/linux/linux_misc.h>
64 #include <compat/linux/linux_util.h>
65 #include <compat/linux/linux_file.h>
67 static int linux_common_open(struct thread *, int, char *, int, int);
68 static int linux_getdents_error(struct thread *, int, int);
71 #ifdef LINUX_LEGACY_SYSCALLS
73 linux_creat(struct thread *td, struct linux_creat_args *args)
78 LCONVPATHEXIST(td, args->path, &path);
81 printf(ARGS(creat, "%s, %d"), path, args->mode);
83 error = kern_openat(td, AT_FDCWD, path, UIO_SYSSPACE,
84 O_WRONLY | O_CREAT | O_TRUNC, args->mode);
91 linux_common_open(struct thread *td, int dirfd, char *path, int l_flags, int mode)
93 struct proc *p = td->td_proc;
99 switch (l_flags & LINUX_O_ACCMODE) {
101 bsd_flags |= O_WRONLY;
107 bsd_flags |= O_RDONLY;
109 if (l_flags & LINUX_O_NDELAY)
110 bsd_flags |= O_NONBLOCK;
111 if (l_flags & LINUX_O_APPEND)
112 bsd_flags |= O_APPEND;
113 if (l_flags & LINUX_O_SYNC)
114 bsd_flags |= O_FSYNC;
115 if (l_flags & LINUX_O_NONBLOCK)
116 bsd_flags |= O_NONBLOCK;
117 if (l_flags & LINUX_FASYNC)
118 bsd_flags |= O_ASYNC;
119 if (l_flags & LINUX_O_CREAT)
120 bsd_flags |= O_CREAT;
121 if (l_flags & LINUX_O_TRUNC)
122 bsd_flags |= O_TRUNC;
123 if (l_flags & LINUX_O_EXCL)
125 if (l_flags & LINUX_O_NOCTTY)
126 bsd_flags |= O_NOCTTY;
127 if (l_flags & LINUX_O_DIRECT)
128 bsd_flags |= O_DIRECT;
129 if (l_flags & LINUX_O_NOFOLLOW)
130 bsd_flags |= O_NOFOLLOW;
131 if (l_flags & LINUX_O_DIRECTORY)
132 bsd_flags |= O_DIRECTORY;
133 /* XXX LINUX_O_NOATIME: unable to be easily implemented. */
135 error = kern_openat(td, dirfd, path, UIO_SYSSPACE, bsd_flags, mode);
138 if (bsd_flags & O_NOCTTY)
142 * XXX In between kern_openat() and fget(), another process
143 * having the same filedesc could use that fd without
146 fd = td->td_retval[0];
147 if (fget(td, fd, &cap_ioctl_rights, &fp) == 0) {
148 if (fp->f_type != DTYPE_VNODE) {
152 sx_slock(&proctree_lock);
154 if (SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) {
156 sx_sunlock(&proctree_lock);
157 /* XXXPJD: Verify if TIOCSCTTY is allowed. */
158 (void) fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0,
162 sx_sunlock(&proctree_lock);
169 #ifdef LINUX_LEGACY_SYSCALLS
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));
199 #ifdef LINUX_LEGACY_SYSCALLS
201 linux_open(struct thread *td, struct linux_open_args *args)
205 if (args->flags & LINUX_O_CREAT)
206 LCONVPATHCREAT(td, args->path, &path);
208 LCONVPATHEXIST(td, args->path, &path);
211 printf(ARGS(open, "%s, 0x%x, 0x%x"),
212 path, args->flags, args->mode);
214 return (linux_common_open(td, AT_FDCWD, path, args->flags, args->mode));
219 linux_lseek(struct thread *td, struct linux_lseek_args *args)
224 printf(ARGS(lseek, "%d, %ld, %d"),
225 args->fdes, (long)args->off, args->whence);
227 return (kern_lseek(td, args->fdes, args->off, args->whence));
230 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
232 linux_llseek(struct thread *td, struct linux_llseek_args *args)
239 printf(ARGS(llseek, "%d, %d:%d, %d"),
240 args->fd, args->ohigh, args->olow, args->whence);
242 off = (args->olow) | (((off_t) args->ohigh) << 32);
244 error = kern_lseek(td, args->fd, off, args->whence);
248 error = copyout(td->td_retval, args->res, sizeof(off_t));
252 td->td_retval[0] = 0;
255 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
258 * Note that linux_getdents(2) and linux_getdents64(2) have the same
259 * arguments. They only differ in the definition of struct dirent they
261 * Note that linux_readdir(2) is a special case of linux_getdents(2)
262 * where count is always equals 1, meaning that the buffer is one
263 * dirent-structure in size and that the code can't handle more anyway.
264 * Note that linux_readdir(2) can't be implemented by means of linux_getdents(2)
265 * as in case when the *dent buffer size is equal to 1 linux_getdents(2) will
270 linux_getdents_error(struct thread *td, int fd, int err)
276 /* Linux return ENOTDIR in case when fd is not a directory. */
277 error = getvnode(td, fd, &cap_read_rights, &fp);
281 if (vp->v_type != VDIR) {
293 char d_name[LINUX_NAME_MAX + 1];
301 char d_name[LINUX_NAME_MAX + 1];
305 * Linux uses the last byte in the dirent buffer to store d_type,
306 * at least glibc-2.7 requires it. That is why l_dirent is padded with 2 bytes.
308 #define LINUX_RECLEN(namlen) \
309 roundup(offsetof(struct l_dirent, d_name) + (namlen) + 2, sizeof(l_ulong))
311 #define LINUX_RECLEN64(namlen) \
312 roundup(offsetof(struct l_dirent64, d_name) + (namlen) + 1, \
315 #ifdef LINUX_LEGACY_SYSCALLS
317 linux_getdents(struct thread *td, struct linux_getdents_args *args)
320 caddr_t inp, buf; /* BSD-format */
321 int len, reclen; /* BSD-format */
322 caddr_t outp; /* Linux-format */
323 int resid, linuxreclen; /* Linux-format */
324 caddr_t lbuf; /* Linux-format */
326 struct l_dirent *linux_dirent;
331 if (ldebug(getdents))
332 printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count);
334 buflen = min(args->count, MAXBSIZE);
335 buf = malloc(buflen, M_TEMP, M_WAITOK);
337 error = kern_getdirentries(td, args->fd, buf, buflen,
338 &base, NULL, UIO_SYSSPACE);
340 error = linux_getdents_error(td, args->fd, error);
344 lbuf = malloc(LINUX_RECLEN(LINUX_NAME_MAX), M_TEMP, M_WAITOK | M_ZERO);
346 len = td->td_retval[0];
348 outp = (caddr_t)args->dent;
353 bdp = (struct dirent *) inp;
354 reclen = bdp->d_reclen;
355 linuxreclen = LINUX_RECLEN(bdp->d_namlen);
357 * No more space in the user supplied dirent buffer.
360 if (resid < linuxreclen) {
365 linux_dirent = (struct l_dirent*)lbuf;
366 linux_dirent->d_ino = bdp->d_fileno;
367 linux_dirent->d_off = base + reclen;
368 linux_dirent->d_reclen = linuxreclen;
370 * Copy d_type to last byte of l_dirent buffer
372 lbuf[linuxreclen - 1] = bdp->d_type;
373 strlcpy(linux_dirent->d_name, bdp->d_name,
374 linuxreclen - offsetof(struct l_dirent, d_name)-1);
375 error = copyout(linux_dirent, outp, linuxreclen);
383 retval += linuxreclen;
385 resid -= linuxreclen;
387 td->td_retval[0] = retval;
398 linux_getdents64(struct thread *td, struct linux_getdents64_args *args)
401 caddr_t inp, buf; /* BSD-format */
402 int len, reclen; /* BSD-format */
403 caddr_t outp; /* Linux-format */
404 int resid, linuxreclen; /* Linux-format */
405 caddr_t lbuf; /* Linux-format */
407 struct l_dirent64 *linux_dirent64;
412 if (ldebug(getdents64))
413 uprintf(ARGS(getdents64, "%d, *, %d"), args->fd, args->count);
415 buflen = min(args->count, MAXBSIZE);
416 buf = malloc(buflen, M_TEMP, M_WAITOK);
418 error = kern_getdirentries(td, args->fd, buf, buflen,
419 &base, NULL, UIO_SYSSPACE);
421 error = linux_getdents_error(td, args->fd, error);
425 lbuf = malloc(LINUX_RECLEN64(LINUX_NAME_MAX), M_TEMP, M_WAITOK | M_ZERO);
427 len = td->td_retval[0];
429 outp = (caddr_t)args->dirent;
434 bdp = (struct dirent *) inp;
435 reclen = bdp->d_reclen;
436 linuxreclen = LINUX_RECLEN64(bdp->d_namlen);
438 * No more space in the user supplied dirent buffer.
441 if (resid < linuxreclen) {
446 linux_dirent64 = (struct l_dirent64*)lbuf;
447 linux_dirent64->d_ino = bdp->d_fileno;
448 linux_dirent64->d_off = base + reclen;
449 linux_dirent64->d_reclen = linuxreclen;
450 linux_dirent64->d_type = bdp->d_type;
451 strlcpy(linux_dirent64->d_name, bdp->d_name,
452 linuxreclen - offsetof(struct l_dirent64, d_name));
453 error = copyout(linux_dirent64, outp, linuxreclen);
461 retval += linuxreclen;
463 resid -= linuxreclen;
465 td->td_retval[0] = retval;
474 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
476 linux_readdir(struct thread *td, struct linux_readdir_args *args)
479 caddr_t buf; /* BSD-format */
480 int linuxreclen; /* Linux-format */
481 caddr_t lbuf; /* Linux-format */
483 struct l_dirent *linux_dirent;
488 printf(ARGS(readdir, "%d, *"), args->fd);
490 buflen = LINUX_RECLEN(LINUX_NAME_MAX);
491 buf = malloc(buflen, M_TEMP, M_WAITOK);
493 error = kern_getdirentries(td, args->fd, buf, buflen,
494 &base, NULL, UIO_SYSSPACE);
496 error = linux_getdents_error(td, args->fd, error);
499 if (td->td_retval[0] == 0)
502 lbuf = malloc(LINUX_RECLEN(LINUX_NAME_MAX), M_TEMP, M_WAITOK | M_ZERO);
504 bdp = (struct dirent *) buf;
505 linuxreclen = LINUX_RECLEN(bdp->d_namlen);
507 linux_dirent = (struct l_dirent*)lbuf;
508 linux_dirent->d_ino = bdp->d_fileno;
509 linux_dirent->d_off = linuxreclen;
510 linux_dirent->d_reclen = bdp->d_namlen;
511 strlcpy(linux_dirent->d_name, bdp->d_name,
512 linuxreclen - offsetof(struct l_dirent, d_name));
513 error = copyout(linux_dirent, args->dent, linuxreclen);
515 td->td_retval[0] = linuxreclen;
522 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
526 * These exist mainly for hooks for doing /compat/linux translation.
529 #ifdef LINUX_LEGACY_SYSCALLS
531 linux_access(struct thread *td, struct linux_access_args *args)
536 /* Linux convention. */
537 if (args->amode & ~(F_OK | X_OK | W_OK | R_OK))
540 LCONVPATHEXIST(td, args->path, &path);
544 printf(ARGS(access, "%s, %d"), path, args->amode);
546 error = kern_accessat(td, AT_FDCWD, path, UIO_SYSSPACE, 0,
555 linux_faccessat(struct thread *td, struct linux_faccessat_args *args)
560 /* Linux convention. */
561 if (args->amode & ~(F_OK | X_OK | W_OK | R_OK))
564 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
565 LCONVPATHEXIST_AT(td, args->filename, &path, dfd);
568 if (ldebug(faccessat))
569 printf(ARGS(access, "%s, %d"), path, args->amode);
572 error = kern_accessat(td, dfd, path, UIO_SYSSPACE, 0, args->amode);
578 #ifdef LINUX_LEGACY_SYSCALLS
580 linux_unlink(struct thread *td, struct linux_unlink_args *args)
586 LCONVPATHEXIST(td, args->path, &path);
590 printf(ARGS(unlink, "%s"), path);
593 error = kern_unlinkat(td, AT_FDCWD, path, UIO_SYSSPACE, 0);
594 if (error == EPERM) {
595 /* Introduce POSIX noncompliant behaviour of Linux */
596 if (kern_statat(td, 0, AT_FDCWD, path, UIO_SYSSPACE, &st,
598 if (S_ISDIR(st.st_mode))
608 linux_unlinkat(struct thread *td, struct linux_unlinkat_args *args)
614 if (args->flag & ~LINUX_AT_REMOVEDIR)
617 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
618 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd);
621 if (ldebug(unlinkat))
622 printf(ARGS(unlinkat, "%s"), path);
625 if (args->flag & LINUX_AT_REMOVEDIR)
626 error = kern_rmdirat(td, dfd, path, UIO_SYSSPACE);
628 error = kern_unlinkat(td, dfd, path, UIO_SYSSPACE, 0);
629 if (error == EPERM && !(args->flag & LINUX_AT_REMOVEDIR)) {
630 /* Introduce POSIX noncompliant behaviour of Linux */
631 if (kern_statat(td, AT_SYMLINK_NOFOLLOW, dfd, path,
632 UIO_SYSSPACE, &st, NULL) == 0 && S_ISDIR(st.st_mode))
639 linux_chdir(struct thread *td, struct linux_chdir_args *args)
644 LCONVPATHEXIST(td, args->path, &path);
648 printf(ARGS(chdir, "%s"), path);
650 error = kern_chdir(td, path, UIO_SYSSPACE);
655 #ifdef LINUX_LEGACY_SYSCALLS
657 linux_chmod(struct thread *td, struct linux_chmod_args *args)
662 LCONVPATHEXIST(td, args->path, &path);
666 printf(ARGS(chmod, "%s, %d"), path, args->mode);
668 error = kern_fchmodat(td, AT_FDCWD, path, UIO_SYSSPACE,
676 linux_fchmodat(struct thread *td, struct linux_fchmodat_args *args)
681 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
682 LCONVPATHEXIST_AT(td, args->filename, &path, dfd);
685 if (ldebug(fchmodat))
686 printf(ARGS(fchmodat, "%s, %d"), path, args->mode);
689 error = kern_fchmodat(td, dfd, path, UIO_SYSSPACE, args->mode, 0);
694 #ifdef LINUX_LEGACY_SYSCALLS
696 linux_mkdir(struct thread *td, struct linux_mkdir_args *args)
701 LCONVPATHCREAT(td, args->path, &path);
705 printf(ARGS(mkdir, "%s, %d"), path, args->mode);
707 error = kern_mkdirat(td, AT_FDCWD, path, UIO_SYSSPACE, args->mode);
714 linux_mkdirat(struct thread *td, struct linux_mkdirat_args *args)
719 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
720 LCONVPATHCREAT_AT(td, args->pathname, &path, dfd);
724 printf(ARGS(mkdirat, "%s, %d"), path, args->mode);
726 error = kern_mkdirat(td, dfd, path, UIO_SYSSPACE, args->mode);
731 #ifdef LINUX_LEGACY_SYSCALLS
733 linux_rmdir(struct thread *td, struct linux_rmdir_args *args)
738 LCONVPATHEXIST(td, args->path, &path);
742 printf(ARGS(rmdir, "%s"), path);
744 error = kern_rmdirat(td, AT_FDCWD, path, UIO_SYSSPACE);
750 linux_rename(struct thread *td, struct linux_rename_args *args)
755 LCONVPATHEXIST(td, args->from, &from);
756 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */
757 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD);
765 printf(ARGS(rename, "%s, %s"), from, to);
767 error = kern_renameat(td, AT_FDCWD, from, AT_FDCWD, to, UIO_SYSSPACE);
775 linux_renameat(struct thread *td, struct linux_renameat_args *args)
778 int error, olddfd, newdfd;
780 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd;
781 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd;
782 LCONVPATHEXIST_AT(td, args->oldname, &from, olddfd);
783 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */
784 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd);
791 if (ldebug(renameat))
792 printf(ARGS(renameat, "%s, %s"), from, to);
794 error = kern_renameat(td, olddfd, from, newdfd, to, UIO_SYSSPACE);
800 #ifdef LINUX_LEGACY_SYSCALLS
802 linux_symlink(struct thread *td, struct linux_symlink_args *args)
807 LCONVPATHEXIST(td, args->path, &path);
808 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
809 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD);
817 printf(ARGS(symlink, "%s, %s"), path, to);
819 error = kern_symlinkat(td, path, AT_FDCWD, to, UIO_SYSSPACE);
827 linux_symlinkat(struct thread *td, struct linux_symlinkat_args *args)
832 dfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd;
833 LCONVPATHEXIST(td, args->oldname, &path);
834 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
835 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, dfd);
842 if (ldebug(symlinkat))
843 printf(ARGS(symlinkat, "%s, %s"), path, to);
846 error = kern_symlinkat(td, path, dfd, to, UIO_SYSSPACE);
852 #ifdef LINUX_LEGACY_SYSCALLS
854 linux_readlink(struct thread *td, struct linux_readlink_args *args)
859 LCONVPATHEXIST(td, args->name, &name);
862 if (ldebug(readlink))
863 printf(ARGS(readlink, "%s, %p, %d"), name, (void *)args->buf,
866 error = kern_readlinkat(td, AT_FDCWD, name, UIO_SYSSPACE,
867 args->buf, UIO_USERSPACE, args->count);
874 linux_readlinkat(struct thread *td, struct linux_readlinkat_args *args)
879 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
880 LCONVPATHEXIST_AT(td, args->path, &name, dfd);
883 if (ldebug(readlinkat))
884 printf(ARGS(readlinkat, "%s, %p, %d"), name, (void *)args->buf,
888 error = kern_readlinkat(td, dfd, name, UIO_SYSSPACE, args->buf,
889 UIO_USERSPACE, args->bufsiz);
895 linux_truncate(struct thread *td, struct linux_truncate_args *args)
900 LCONVPATHEXIST(td, args->path, &path);
903 if (ldebug(truncate))
904 printf(ARGS(truncate, "%s, %ld"), path, (long)args->length);
907 error = kern_truncate(td, path, UIO_SYSSPACE, args->length);
912 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
914 linux_truncate64(struct thread *td, struct linux_truncate64_args *args)
919 LCONVPATHEXIST(td, args->path, &path);
922 if (ldebug(truncate64))
923 printf(ARGS(truncate64, "%s, %jd"), path, args->length);
926 error = kern_truncate(td, path, UIO_SYSSPACE, args->length);
930 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
933 linux_ftruncate(struct thread *td, struct linux_ftruncate_args *args)
936 return (kern_ftruncate(td, args->fd, args->length));
939 #ifdef LINUX_LEGACY_SYSCALLS
941 linux_link(struct thread *td, struct linux_link_args *args)
946 LCONVPATHEXIST(td, args->path, &path);
947 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
948 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD);
956 printf(ARGS(link, "%s, %s"), path, to);
958 error = kern_linkat(td, AT_FDCWD, AT_FDCWD, path, to, UIO_SYSSPACE,
967 linux_linkat(struct thread *td, struct linux_linkat_args *args)
970 int error, olddfd, newdfd, follow;
972 if (args->flag & ~LINUX_AT_SYMLINK_FOLLOW)
975 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd;
976 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd;
977 LCONVPATHEXIST_AT(td, args->oldname, &path, olddfd);
978 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
979 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd);
987 printf(ARGS(linkat, "%i, %s, %i, %s, %i"), args->olddfd, path,
988 args->newdfd, to, args->flag);
991 follow = (args->flag & LINUX_AT_SYMLINK_FOLLOW) == 0 ? NOFOLLOW :
993 error = kern_linkat(td, olddfd, newdfd, path, to, UIO_SYSSPACE, follow);
1000 linux_fdatasync(td, uap)
1002 struct linux_fdatasync_args *uap;
1005 return (kern_fsync(td, uap->fd, false));
1009 linux_pread(struct thread *td, struct linux_pread_args *uap)
1014 error = kern_pread(td, uap->fd, uap->buf, uap->nbyte, uap->offset);
1016 /* This seems to violate POSIX but Linux does it. */
1017 error = fgetvp(td, uap->fd, &cap_pread_rights, &vp);
1020 if (vp->v_type == VDIR) {
1030 linux_pwrite(struct thread *td, struct linux_pwrite_args *uap)
1033 return (kern_pwrite(td, uap->fd, uap->buf, uap->nbyte, uap->offset));
1037 linux_preadv(struct thread *td, struct linux_preadv_args *uap)
1044 * According http://man7.org/linux/man-pages/man2/preadv.2.html#NOTES
1045 * pos_l and pos_h, respectively, contain the
1046 * low order and high order 32 bits of offset.
1048 offset = (((off_t)uap->pos_h << (sizeof(offset) * 4)) <<
1049 (sizeof(offset) * 4)) | uap->pos_l;
1052 #ifdef COMPAT_LINUX32
1053 error = linux32_copyinuio(PTRIN(uap->vec), uap->vlen, &auio);
1055 error = copyinuio(uap->vec, uap->vlen, &auio);
1059 error = kern_preadv(td, uap->fd, auio, offset);
1065 linux_pwritev(struct thread *td, struct linux_pwritev_args *uap)
1072 * According http://man7.org/linux/man-pages/man2/pwritev.2.html#NOTES
1073 * pos_l and pos_h, respectively, contain the
1074 * low order and high order 32 bits of offset.
1076 offset = (((off_t)uap->pos_h << (sizeof(offset) * 4)) <<
1077 (sizeof(offset) * 4)) | uap->pos_l;
1080 #ifdef COMPAT_LINUX32
1081 error = linux32_copyinuio(PTRIN(uap->vec), uap->vlen, &auio);
1083 error = copyinuio(uap->vec, uap->vlen, &auio);
1087 error = kern_pwritev(td, uap->fd, auio, offset);
1093 linux_mount(struct thread *td, struct linux_mount_args *args)
1095 char fstypename[MFSNAMELEN];
1096 char *mntonname, *mntfromname;
1099 mntonname = malloc(MNAMELEN, M_TEMP, M_WAITOK);
1100 mntfromname = malloc(MNAMELEN, M_TEMP, M_WAITOK);
1101 error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1,
1105 error = copyinstr(args->specialfile, mntfromname, MNAMELEN - 1, NULL);
1108 error = copyinstr(args->dir, mntonname, MNAMELEN - 1, NULL);
1114 printf(ARGS(mount, "%s, %s, %s"),
1115 fstypename, mntfromname, mntonname);
1118 if (strcmp(fstypename, "ext2") == 0) {
1119 strcpy(fstypename, "ext2fs");
1120 } else if (strcmp(fstypename, "proc") == 0) {
1121 strcpy(fstypename, "linprocfs");
1122 } else if (strcmp(fstypename, "vfat") == 0) {
1123 strcpy(fstypename, "msdosfs");
1128 if ((args->rwflag & 0xffff0000) == 0xc0ed0000) {
1130 * Linux SYNC flag is not included; the closest equivalent
1131 * FreeBSD has is !ASYNC, which is our default.
1133 if (args->rwflag & LINUX_MS_RDONLY)
1134 fsflags |= MNT_RDONLY;
1135 if (args->rwflag & LINUX_MS_NOSUID)
1136 fsflags |= MNT_NOSUID;
1137 if (args->rwflag & LINUX_MS_NOEXEC)
1138 fsflags |= MNT_NOEXEC;
1139 if (args->rwflag & LINUX_MS_REMOUNT)
1140 fsflags |= MNT_UPDATE;
1143 error = kernel_vmount(fsflags,
1144 "fstype", fstypename,
1145 "fspath", mntonname,
1146 "from", mntfromname,
1149 free(mntonname, M_TEMP);
1150 free(mntfromname, M_TEMP);
1154 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1156 linux_oldumount(struct thread *td, struct linux_oldumount_args *args)
1158 struct linux_umount_args args2;
1160 args2.path = args->path;
1162 return (linux_umount(td, &args2));
1164 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1166 #ifdef LINUX_LEGACY_SYSCALLS
1168 linux_umount(struct thread *td, struct linux_umount_args *args)
1170 struct unmount_args bsd;
1172 bsd.path = args->path;
1173 bsd.flags = args->flags; /* XXX correct? */
1174 return (sys_unmount(td, &bsd));
1179 * fcntl family of syscalls
1189 #if defined(__amd64__) && defined(COMPAT_LINUX32)
1195 linux_to_bsd_flock(struct l_flock *linux_flock, struct flock *bsd_flock)
1197 switch (linux_flock->l_type) {
1199 bsd_flock->l_type = F_RDLCK;
1202 bsd_flock->l_type = F_WRLCK;
1205 bsd_flock->l_type = F_UNLCK;
1208 bsd_flock->l_type = -1;
1211 bsd_flock->l_whence = linux_flock->l_whence;
1212 bsd_flock->l_start = (off_t)linux_flock->l_start;
1213 bsd_flock->l_len = (off_t)linux_flock->l_len;
1214 bsd_flock->l_pid = (pid_t)linux_flock->l_pid;
1215 bsd_flock->l_sysid = 0;
1219 bsd_to_linux_flock(struct flock *bsd_flock, struct l_flock *linux_flock)
1221 switch (bsd_flock->l_type) {
1223 linux_flock->l_type = LINUX_F_RDLCK;
1226 linux_flock->l_type = LINUX_F_WRLCK;
1229 linux_flock->l_type = LINUX_F_UNLCK;
1232 linux_flock->l_whence = bsd_flock->l_whence;
1233 linux_flock->l_start = (l_off_t)bsd_flock->l_start;
1234 linux_flock->l_len = (l_off_t)bsd_flock->l_len;
1235 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid;
1238 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1246 #if defined(__amd64__) && defined(COMPAT_LINUX32)
1252 linux_to_bsd_flock64(struct l_flock64 *linux_flock, struct flock *bsd_flock)
1254 switch (linux_flock->l_type) {
1256 bsd_flock->l_type = F_RDLCK;
1259 bsd_flock->l_type = F_WRLCK;
1262 bsd_flock->l_type = F_UNLCK;
1265 bsd_flock->l_type = -1;
1268 bsd_flock->l_whence = linux_flock->l_whence;
1269 bsd_flock->l_start = (off_t)linux_flock->l_start;
1270 bsd_flock->l_len = (off_t)linux_flock->l_len;
1271 bsd_flock->l_pid = (pid_t)linux_flock->l_pid;
1272 bsd_flock->l_sysid = 0;
1276 bsd_to_linux_flock64(struct flock *bsd_flock, struct l_flock64 *linux_flock)
1278 switch (bsd_flock->l_type) {
1280 linux_flock->l_type = LINUX_F_RDLCK;
1283 linux_flock->l_type = LINUX_F_WRLCK;
1286 linux_flock->l_type = LINUX_F_UNLCK;
1289 linux_flock->l_whence = bsd_flock->l_whence;
1290 linux_flock->l_start = (l_loff_t)bsd_flock->l_start;
1291 linux_flock->l_len = (l_loff_t)bsd_flock->l_len;
1292 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid;
1294 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1297 fcntl_common(struct thread *td, struct linux_fcntl_args *args)
1299 struct l_flock linux_flock;
1300 struct flock bsd_flock;
1305 switch (args->cmd) {
1307 return (kern_fcntl(td, args->fd, F_DUPFD, args->arg));
1310 return (kern_fcntl(td, args->fd, F_GETFD, 0));
1313 return (kern_fcntl(td, args->fd, F_SETFD, args->arg));
1316 error = kern_fcntl(td, args->fd, F_GETFL, 0);
1317 result = td->td_retval[0];
1318 td->td_retval[0] = 0;
1319 if (result & O_RDONLY)
1320 td->td_retval[0] |= LINUX_O_RDONLY;
1321 if (result & O_WRONLY)
1322 td->td_retval[0] |= LINUX_O_WRONLY;
1323 if (result & O_RDWR)
1324 td->td_retval[0] |= LINUX_O_RDWR;
1325 if (result & O_NDELAY)
1326 td->td_retval[0] |= LINUX_O_NONBLOCK;
1327 if (result & O_APPEND)
1328 td->td_retval[0] |= LINUX_O_APPEND;
1329 if (result & O_FSYNC)
1330 td->td_retval[0] |= LINUX_O_SYNC;
1331 if (result & O_ASYNC)
1332 td->td_retval[0] |= LINUX_FASYNC;
1333 #ifdef LINUX_O_NOFOLLOW
1334 if (result & O_NOFOLLOW)
1335 td->td_retval[0] |= LINUX_O_NOFOLLOW;
1337 #ifdef LINUX_O_DIRECT
1338 if (result & O_DIRECT)
1339 td->td_retval[0] |= LINUX_O_DIRECT;
1345 if (args->arg & LINUX_O_NDELAY)
1347 if (args->arg & LINUX_O_APPEND)
1349 if (args->arg & LINUX_O_SYNC)
1351 if (args->arg & LINUX_FASYNC)
1353 #ifdef LINUX_O_NOFOLLOW
1354 if (args->arg & LINUX_O_NOFOLLOW)
1357 #ifdef LINUX_O_DIRECT
1358 if (args->arg & LINUX_O_DIRECT)
1361 return (kern_fcntl(td, args->fd, F_SETFL, arg));
1364 error = copyin((void *)args->arg, &linux_flock,
1365 sizeof(linux_flock));
1368 linux_to_bsd_flock(&linux_flock, &bsd_flock);
1369 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock);
1372 bsd_to_linux_flock(&bsd_flock, &linux_flock);
1373 return (copyout(&linux_flock, (void *)args->arg,
1374 sizeof(linux_flock)));
1377 error = copyin((void *)args->arg, &linux_flock,
1378 sizeof(linux_flock));
1381 linux_to_bsd_flock(&linux_flock, &bsd_flock);
1382 return (kern_fcntl(td, args->fd, F_SETLK,
1383 (intptr_t)&bsd_flock));
1385 case LINUX_F_SETLKW:
1386 error = copyin((void *)args->arg, &linux_flock,
1387 sizeof(linux_flock));
1390 linux_to_bsd_flock(&linux_flock, &bsd_flock);
1391 return (kern_fcntl(td, args->fd, F_SETLKW,
1392 (intptr_t)&bsd_flock));
1394 case LINUX_F_GETOWN:
1395 return (kern_fcntl(td, args->fd, F_GETOWN, 0));
1397 case LINUX_F_SETOWN:
1399 * XXX some Linux applications depend on F_SETOWN having no
1400 * significant effect for pipes (SIGIO is not delivered for
1401 * pipes under Linux-2.2.35 at least).
1403 error = fget(td, args->fd,
1404 &cap_fcntl_rights, &fp);
1407 if (fp->f_type == DTYPE_PIPE) {
1413 return (kern_fcntl(td, args->fd, F_SETOWN, args->arg));
1415 case LINUX_F_DUPFD_CLOEXEC:
1416 return (kern_fcntl(td, args->fd, F_DUPFD_CLOEXEC, args->arg));
1423 linux_fcntl(struct thread *td, struct linux_fcntl_args *args)
1428 printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd);
1431 return (fcntl_common(td, args));
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;
1440 struct linux_fcntl_args fcntl_args;
1444 if (ldebug(fcntl64))
1445 printf(ARGS(fcntl64, "%d, %08x, *"), args->fd, args->cmd);
1448 switch (args->cmd) {
1449 case LINUX_F_GETLK64:
1450 error = copyin((void *)args->arg, &linux_flock,
1451 sizeof(linux_flock));
1454 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
1455 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock);
1458 bsd_to_linux_flock64(&bsd_flock, &linux_flock);
1459 return (copyout(&linux_flock, (void *)args->arg,
1460 sizeof(linux_flock)));
1462 case LINUX_F_SETLK64:
1463 error = copyin((void *)args->arg, &linux_flock,
1464 sizeof(linux_flock));
1467 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
1468 return (kern_fcntl(td, args->fd, F_SETLK,
1469 (intptr_t)&bsd_flock));
1471 case LINUX_F_SETLKW64:
1472 error = copyin((void *)args->arg, &linux_flock,
1473 sizeof(linux_flock));
1476 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
1477 return (kern_fcntl(td, args->fd, F_SETLKW,
1478 (intptr_t)&bsd_flock));
1481 fcntl_args.fd = args->fd;
1482 fcntl_args.cmd = args->cmd;
1483 fcntl_args.arg = args->arg;
1484 return (fcntl_common(td, &fcntl_args));
1486 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1488 #ifdef LINUX_LEGACY_SYSCALLS
1490 linux_chown(struct thread *td, struct linux_chown_args *args)
1495 LCONVPATHEXIST(td, args->path, &path);
1499 printf(ARGS(chown, "%s, %d, %d"), path, args->uid, args->gid);
1501 error = kern_fchownat(td, AT_FDCWD, path, UIO_SYSSPACE, args->uid,
1509 linux_fchownat(struct thread *td, struct linux_fchownat_args *args)
1512 int error, dfd, flag;
1514 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW)
1517 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
1518 LCONVPATHEXIST_AT(td, args->filename, &path, dfd);
1521 if (ldebug(fchownat))
1522 printf(ARGS(fchownat, "%s, %d, %d"), path, args->uid, args->gid);
1525 flag = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) == 0 ? 0 :
1526 AT_SYMLINK_NOFOLLOW;
1527 error = kern_fchownat(td, dfd, path, UIO_SYSSPACE, args->uid, args->gid,
1533 #ifdef LINUX_LEGACY_SYSCALLS
1535 linux_lchown(struct thread *td, struct linux_lchown_args *args)
1540 LCONVPATHEXIST(td, args->path, &path);
1544 printf(ARGS(lchown, "%s, %d, %d"), path, args->uid, args->gid);
1546 error = kern_fchownat(td, AT_FDCWD, path, UIO_SYSSPACE, args->uid,
1547 args->gid, AT_SYMLINK_NOFOLLOW);
1554 convert_fadvice(int advice)
1557 case LINUX_POSIX_FADV_NORMAL:
1558 return (POSIX_FADV_NORMAL);
1559 case LINUX_POSIX_FADV_RANDOM:
1560 return (POSIX_FADV_RANDOM);
1561 case LINUX_POSIX_FADV_SEQUENTIAL:
1562 return (POSIX_FADV_SEQUENTIAL);
1563 case LINUX_POSIX_FADV_WILLNEED:
1564 return (POSIX_FADV_WILLNEED);
1565 case LINUX_POSIX_FADV_DONTNEED:
1566 return (POSIX_FADV_DONTNEED);
1567 case LINUX_POSIX_FADV_NOREUSE:
1568 return (POSIX_FADV_NOREUSE);
1575 linux_fadvise64(struct thread *td, struct linux_fadvise64_args *args)
1579 advice = convert_fadvice(args->advice);
1582 return (kern_posix_fadvise(td, args->fd, args->offset, args->len,
1586 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1588 linux_fadvise64_64(struct thread *td, struct linux_fadvise64_64_args *args)
1592 advice = convert_fadvice(args->advice);
1595 return (kern_posix_fadvise(td, args->fd, args->offset, args->len,
1598 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1600 #ifdef LINUX_LEGACY_SYSCALLS
1602 linux_pipe(struct thread *td, struct linux_pipe_args *args)
1609 printf(ARGS(pipe, "*"));
1612 error = kern_pipe(td, fildes, 0, NULL, NULL);
1616 error = copyout(fildes, args->pipefds, sizeof(fildes));
1618 (void)kern_close(td, fildes[0]);
1619 (void)kern_close(td, fildes[1]);
1627 linux_pipe2(struct thread *td, struct linux_pipe2_args *args)
1634 printf(ARGS(pipe2, "*, %d"), args->flags);
1637 if ((args->flags & ~(LINUX_O_NONBLOCK | LINUX_O_CLOEXEC)) != 0)
1641 if ((args->flags & LINUX_O_NONBLOCK) != 0)
1642 flags |= O_NONBLOCK;
1643 if ((args->flags & LINUX_O_CLOEXEC) != 0)
1645 error = kern_pipe(td, fildes, flags, NULL, NULL);
1649 error = copyout(fildes, args->pipefds, sizeof(fildes));
1651 (void)kern_close(td, fildes[0]);
1652 (void)kern_close(td, fildes[1]);
1659 linux_dup3(struct thread *td, struct linux_dup3_args *args)
1664 if (args->oldfd == args->newfd)
1666 if ((args->flags & ~LINUX_O_CLOEXEC) != 0)
1668 if (args->flags & LINUX_O_CLOEXEC)
1669 cmd = F_DUP2FD_CLOEXEC;
1673 newfd = args->newfd;
1674 return (kern_fcntl(td, args->oldfd, cmd, newfd));
1678 linux_fallocate(struct thread *td, struct linux_fallocate_args *args)
1682 * We emulate only posix_fallocate system call for which
1685 if (args->mode != 0)
1688 return (kern_posix_fallocate(td, args->fd, args->offset,