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>
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);
72 linux_creat(struct thread *td, struct linux_creat_args *args)
77 LCONVPATHEXIST(td, args->path, &path);
80 printf(ARGS(creat, "%s, %d"), path, args->mode);
82 error = kern_openat(td, AT_FDCWD, path, UIO_SYSSPACE,
83 O_WRONLY | O_CREAT | O_TRUNC, args->mode);
90 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_open() 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_rights_init(&rights, CAP_IOCTL), &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);
170 printf(LMSG("open returns error %d"), error);
177 linux_openat(struct thread *td, struct linux_openat_args *args)
182 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
183 if (args->flags & LINUX_O_CREAT)
184 LCONVPATH_AT(td, args->filename, &path, 1, dfd);
186 LCONVPATH_AT(td, args->filename, &path, 0, dfd);
189 printf(ARGS(openat, "%i, %s, 0x%x, 0x%x"), args->dfd,
190 path, args->flags, args->mode);
192 return (linux_common_open(td, dfd, path, args->flags, args->mode));
196 linux_open(struct thread *td, struct linux_open_args *args)
200 if (args->flags & LINUX_O_CREAT)
201 LCONVPATHCREAT(td, args->path, &path);
203 LCONVPATHEXIST(td, args->path, &path);
206 printf(ARGS(open, "%s, 0x%x, 0x%x"),
207 path, args->flags, args->mode);
209 return (linux_common_open(td, AT_FDCWD, path, args->flags, args->mode));
213 linux_lseek(struct thread *td, struct linux_lseek_args *args)
218 printf(ARGS(lseek, "%d, %ld, %d"),
219 args->fdes, (long)args->off, args->whence);
221 return (kern_lseek(td, args->fdes, args->off, args->whence));
224 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
226 linux_llseek(struct thread *td, struct linux_llseek_args *args)
233 printf(ARGS(llseek, "%d, %d:%d, %d"),
234 args->fd, args->ohigh, args->olow, args->whence);
236 off = (args->olow) | (((off_t) args->ohigh) << 32);
238 error = kern_lseek(td, args->fd, off, args->whence);
242 error = copyout(td->td_retval, args->res, sizeof(off_t));
246 td->td_retval[0] = 0;
249 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
252 * Note that linux_getdents(2) and linux_getdents64(2) have the same
253 * arguments. They only differ in the definition of struct dirent they
255 * Note that linux_readdir(2) is a special case of linux_getdents(2)
256 * where count is always equals 1, meaning that the buffer is one
257 * dirent-structure in size and that the code can't handle more anyway.
258 * Note that linux_readdir(2) can't be implemented by means of linux_getdents(2)
259 * as in case when the *dent buffer size is equal to 1 linux_getdents(2) will
264 linux_getdents_error(struct thread *td, int fd, int err)
271 /* Linux return ENOTDIR in case when fd is not a directory. */
272 error = getvnode(td, fd, cap_rights_init(&rights, CAP_READ), &fp);
276 if (vp->v_type != VDIR) {
288 char d_name[LINUX_NAME_MAX + 1];
296 char d_name[LINUX_NAME_MAX + 1];
300 * Linux uses the last byte in the dirent buffer to store d_type,
301 * at least glibc-2.7 requires it. That is why l_dirent is padded with 2 bytes.
303 #define LINUX_RECLEN(namlen) \
304 roundup(offsetof(struct l_dirent, d_name) + (namlen) + 2, sizeof(l_ulong))
306 #define LINUX_RECLEN64(namlen) \
307 roundup(offsetof(struct l_dirent64, d_name) + (namlen) + 1, \
310 #define LINUX_DIRBLKSIZ 512
313 linux_getdents(struct thread *td, struct linux_getdents_args *args)
316 caddr_t inp, buf; /* BSD-format */
317 int len, reclen; /* BSD-format */
318 caddr_t outp; /* Linux-format */
319 int resid, linuxreclen; /* Linux-format */
320 caddr_t lbuf; /* Linux-format */
322 struct l_dirent *linux_dirent;
327 if (ldebug(getdents))
328 printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count);
330 buflen = min(args->count, MAXBSIZE);
331 buf = malloc(buflen, M_TEMP, M_WAITOK);
333 error = kern_getdirentries(td, args->fd, buf, buflen,
334 &base, NULL, UIO_SYSSPACE);
336 error = linux_getdents_error(td, args->fd, error);
340 lbuf = malloc(LINUX_RECLEN(LINUX_NAME_MAX), M_TEMP, M_WAITOK | M_ZERO);
342 len = td->td_retval[0];
344 outp = (caddr_t)args->dent;
349 bdp = (struct dirent *) inp;
350 reclen = bdp->d_reclen;
351 linuxreclen = LINUX_RECLEN(bdp->d_namlen);
353 * No more space in the user supplied dirent buffer.
356 if (resid < linuxreclen) {
361 linux_dirent = (struct l_dirent*)lbuf;
362 linux_dirent->d_ino = bdp->d_fileno;
363 linux_dirent->d_off = base + reclen;
364 linux_dirent->d_reclen = linuxreclen;
366 * Copy d_type to last byte of l_dirent buffer
368 lbuf[linuxreclen - 1] = bdp->d_type;
369 strlcpy(linux_dirent->d_name, bdp->d_name,
370 linuxreclen - offsetof(struct l_dirent, d_name)-1);
371 error = copyout(linux_dirent, outp, linuxreclen);
379 retval += linuxreclen;
381 resid -= linuxreclen;
383 td->td_retval[0] = retval;
393 linux_getdents64(struct thread *td, struct linux_getdents64_args *args)
396 caddr_t inp, buf; /* BSD-format */
397 int len, reclen; /* BSD-format */
398 caddr_t outp; /* Linux-format */
399 int resid, linuxreclen; /* Linux-format */
400 caddr_t lbuf; /* Linux-format */
402 struct l_dirent64 *linux_dirent64;
407 if (ldebug(getdents64))
408 uprintf(ARGS(getdents64, "%d, *, %d"), args->fd, args->count);
410 buflen = min(args->count, MAXBSIZE);
411 buf = malloc(buflen, M_TEMP, M_WAITOK);
413 error = kern_getdirentries(td, args->fd, buf, buflen,
414 &base, NULL, UIO_SYSSPACE);
416 error = linux_getdents_error(td, args->fd, error);
420 lbuf = malloc(LINUX_RECLEN64(LINUX_NAME_MAX), M_TEMP, M_WAITOK | M_ZERO);
422 len = td->td_retval[0];
424 outp = (caddr_t)args->dirent;
429 bdp = (struct dirent *) inp;
430 reclen = bdp->d_reclen;
431 linuxreclen = LINUX_RECLEN64(bdp->d_namlen);
433 * No more space in the user supplied dirent buffer.
436 if (resid < linuxreclen) {
441 linux_dirent64 = (struct l_dirent64*)lbuf;
442 linux_dirent64->d_ino = bdp->d_fileno;
443 linux_dirent64->d_off = base + reclen;
444 linux_dirent64->d_reclen = linuxreclen;
445 linux_dirent64->d_type = bdp->d_type;
446 strlcpy(linux_dirent64->d_name, bdp->d_name,
447 linuxreclen - offsetof(struct l_dirent64, d_name));
448 error = copyout(linux_dirent64, outp, linuxreclen);
456 retval += linuxreclen;
458 resid -= linuxreclen;
460 td->td_retval[0] = retval;
469 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
471 linux_readdir(struct thread *td, struct linux_readdir_args *args)
474 caddr_t buf; /* BSD-format */
475 int linuxreclen; /* Linux-format */
476 caddr_t lbuf; /* Linux-format */
478 struct l_dirent *linux_dirent;
483 printf(ARGS(readdir, "%d, *"), args->fd);
485 buflen = LINUX_RECLEN(LINUX_NAME_MAX);
486 buf = malloc(buflen, M_TEMP, M_WAITOK);
488 error = kern_getdirentries(td, args->fd, buf, buflen,
489 &base, NULL, UIO_SYSSPACE);
491 error = linux_getdents_error(td, args->fd, error);
494 if (td->td_retval[0] == 0)
497 lbuf = malloc(LINUX_RECLEN(LINUX_NAME_MAX), M_TEMP, M_WAITOK | M_ZERO);
499 bdp = (struct dirent *) buf;
500 linuxreclen = LINUX_RECLEN(bdp->d_namlen);
502 linux_dirent = (struct l_dirent*)lbuf;
503 linux_dirent->d_ino = bdp->d_fileno;
504 linux_dirent->d_off = linuxreclen;
505 linux_dirent->d_reclen = bdp->d_namlen;
506 strlcpy(linux_dirent->d_name, bdp->d_name,
507 linuxreclen - offsetof(struct l_dirent, d_name));
508 error = copyout(linux_dirent, args->dent, linuxreclen);
510 td->td_retval[0] = linuxreclen;
517 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
521 * These exist mainly for hooks for doing /compat/linux translation.
525 linux_access(struct thread *td, struct linux_access_args *args)
530 /* linux convention */
531 if (args->amode & ~(F_OK | X_OK | W_OK | R_OK))
534 LCONVPATHEXIST(td, args->path, &path);
538 printf(ARGS(access, "%s, %d"), path, args->amode);
540 error = kern_accessat(td, AT_FDCWD, path, UIO_SYSSPACE, 0,
548 linux_faccessat(struct thread *td, struct linux_faccessat_args *args)
553 /* linux convention */
554 if (args->amode & ~(F_OK | X_OK | W_OK | R_OK))
557 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
558 LCONVPATHEXIST_AT(td, args->filename, &path, dfd);
562 printf(ARGS(access, "%s, %d"), path, args->amode);
565 error = kern_accessat(td, dfd, path, UIO_SYSSPACE, 0, args->amode);
572 linux_unlink(struct thread *td, struct linux_unlink_args *args)
578 LCONVPATHEXIST(td, args->path, &path);
582 printf(ARGS(unlink, "%s"), path);
585 error = kern_unlinkat(td, AT_FDCWD, path, UIO_SYSSPACE, 0);
586 if (error == EPERM) {
587 /* Introduce POSIX noncompliant behaviour of Linux */
588 if (kern_statat(td, 0, AT_FDCWD, path, UIO_SYSSPACE, &st,
590 if (S_ISDIR(st.st_mode))
599 linux_unlinkat(struct thread *td, struct linux_unlinkat_args *args)
605 if (args->flag & ~LINUX_AT_REMOVEDIR)
608 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
609 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd);
612 if (ldebug(unlinkat))
613 printf(ARGS(unlinkat, "%s"), path);
616 if (args->flag & LINUX_AT_REMOVEDIR)
617 error = kern_rmdirat(td, dfd, path, UIO_SYSSPACE);
619 error = kern_unlinkat(td, dfd, path, UIO_SYSSPACE, 0);
620 if (error == EPERM && !(args->flag & LINUX_AT_REMOVEDIR)) {
621 /* Introduce POSIX noncompliant behaviour of Linux */
622 if (kern_statat(td, AT_SYMLINK_NOFOLLOW, dfd, path,
623 UIO_SYSSPACE, &st, NULL) == 0 && S_ISDIR(st.st_mode))
630 linux_chdir(struct thread *td, struct linux_chdir_args *args)
635 LCONVPATHEXIST(td, args->path, &path);
639 printf(ARGS(chdir, "%s"), path);
641 error = kern_chdir(td, path, UIO_SYSSPACE);
647 linux_chmod(struct thread *td, struct linux_chmod_args *args)
652 LCONVPATHEXIST(td, args->path, &path);
656 printf(ARGS(chmod, "%s, %d"), path, args->mode);
658 error = kern_fchmodat(td, AT_FDCWD, path, UIO_SYSSPACE,
665 linux_fchmodat(struct thread *td, struct linux_fchmodat_args *args)
670 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
671 LCONVPATHEXIST_AT(td, args->filename, &path, dfd);
674 if (ldebug(fchmodat))
675 printf(ARGS(fchmodat, "%s, %d"), path, args->mode);
678 error = kern_fchmodat(td, dfd, path, UIO_SYSSPACE, args->mode, 0);
684 linux_mkdir(struct thread *td, struct linux_mkdir_args *args)
689 LCONVPATHCREAT(td, args->path, &path);
693 printf(ARGS(mkdir, "%s, %d"), path, args->mode);
695 error = kern_mkdirat(td, AT_FDCWD, path, UIO_SYSSPACE, args->mode);
701 linux_mkdirat(struct thread *td, struct linux_mkdirat_args *args)
706 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
707 LCONVPATHCREAT_AT(td, args->pathname, &path, dfd);
711 printf(ARGS(mkdirat, "%s, %d"), path, args->mode);
713 error = kern_mkdirat(td, dfd, path, UIO_SYSSPACE, args->mode);
719 linux_rmdir(struct thread *td, struct linux_rmdir_args *args)
724 LCONVPATHEXIST(td, args->path, &path);
728 printf(ARGS(rmdir, "%s"), path);
730 error = kern_rmdirat(td, AT_FDCWD, path, UIO_SYSSPACE);
736 linux_rename(struct thread *td, struct linux_rename_args *args)
741 LCONVPATHEXIST(td, args->from, &from);
742 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */
743 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD);
751 printf(ARGS(rename, "%s, %s"), from, to);
753 error = kern_renameat(td, AT_FDCWD, from, AT_FDCWD, to, UIO_SYSSPACE);
760 linux_renameat(struct thread *td, struct linux_renameat_args *args)
763 int error, olddfd, newdfd;
765 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd;
766 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd;
767 LCONVPATHEXIST_AT(td, args->oldname, &from, olddfd);
768 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */
769 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd);
776 if (ldebug(renameat))
777 printf(ARGS(renameat, "%s, %s"), from, to);
779 error = kern_renameat(td, olddfd, from, newdfd, to, UIO_SYSSPACE);
786 linux_symlink(struct thread *td, struct linux_symlink_args *args)
791 LCONVPATHEXIST(td, args->path, &path);
792 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
793 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD);
801 printf(ARGS(symlink, "%s, %s"), path, to);
803 error = kern_symlinkat(td, path, AT_FDCWD, to, UIO_SYSSPACE);
810 linux_symlinkat(struct thread *td, struct linux_symlinkat_args *args)
815 dfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd;
816 LCONVPATHEXIST(td, args->oldname, &path);
817 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
818 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, dfd);
825 if (ldebug(symlinkat))
826 printf(ARGS(symlinkat, "%s, %s"), path, to);
829 error = kern_symlinkat(td, path, dfd, to, UIO_SYSSPACE);
836 linux_readlink(struct thread *td, struct linux_readlink_args *args)
841 LCONVPATHEXIST(td, args->name, &name);
844 if (ldebug(readlink))
845 printf(ARGS(readlink, "%s, %p, %d"), name, (void *)args->buf,
848 error = kern_readlinkat(td, AT_FDCWD, name, UIO_SYSSPACE,
849 args->buf, UIO_USERSPACE, args->count);
855 linux_readlinkat(struct thread *td, struct linux_readlinkat_args *args)
860 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
861 LCONVPATHEXIST_AT(td, args->path, &name, dfd);
864 if (ldebug(readlinkat))
865 printf(ARGS(readlinkat, "%s, %p, %d"), name, (void *)args->buf,
869 error = kern_readlinkat(td, dfd, name, UIO_SYSSPACE, args->buf,
870 UIO_USERSPACE, args->bufsiz);
876 linux_truncate(struct thread *td, struct linux_truncate_args *args)
881 LCONVPATHEXIST(td, args->path, &path);
884 if (ldebug(truncate))
885 printf(ARGS(truncate, "%s, %ld"), path, (long)args->length);
888 error = kern_truncate(td, path, UIO_SYSSPACE, args->length);
893 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
895 linux_truncate64(struct thread *td, struct linux_truncate64_args *args)
900 LCONVPATHEXIST(td, args->path, &path);
903 if (ldebug(truncate64))
904 printf(ARGS(truncate64, "%s, %jd"), path, args->length);
907 error = kern_truncate(td, path, UIO_SYSSPACE, args->length);
911 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
914 linux_ftruncate(struct thread *td, struct linux_ftruncate_args *args)
917 return (kern_ftruncate(td, args->fd, args->length));
921 linux_link(struct thread *td, struct linux_link_args *args)
926 LCONVPATHEXIST(td, args->path, &path);
927 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
928 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD);
936 printf(ARGS(link, "%s, %s"), path, to);
938 error = kern_linkat(td, AT_FDCWD, AT_FDCWD, path, to, UIO_SYSSPACE,
946 linux_linkat(struct thread *td, struct linux_linkat_args *args)
949 int error, olddfd, newdfd, follow;
951 if (args->flag & ~LINUX_AT_SYMLINK_FOLLOW)
954 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd;
955 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd;
956 LCONVPATHEXIST_AT(td, args->oldname, &path, olddfd);
957 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
958 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd);
966 printf(ARGS(linkat, "%i, %s, %i, %s, %i"), args->olddfd, path,
967 args->newdfd, to, args->flag);
970 follow = (args->flag & LINUX_AT_SYMLINK_FOLLOW) == 0 ? NOFOLLOW :
972 error = kern_linkat(td, olddfd, newdfd, path, to, UIO_SYSSPACE, follow);
979 linux_fdatasync(td, uap)
981 struct linux_fdatasync_args *uap;
984 return (kern_fsync(td, uap->fd, false));
988 linux_pread(struct thread *td, struct linux_pread_args *uap)
994 error = kern_pread(td, uap->fd, uap->buf, uap->nbyte, uap->offset);
996 /* This seems to violate POSIX but linux does it */
997 error = fgetvp(td, uap->fd,
998 cap_rights_init(&rights, CAP_PREAD), &vp);
1001 if (vp->v_type == VDIR) {
1011 linux_pwrite(struct thread *td, struct linux_pwrite_args *uap)
1014 return (kern_pwrite(td, uap->fd, uap->buf, uap->nbyte, uap->offset));
1018 linux_preadv(struct thread *td, struct linux_preadv_args *uap)
1025 * According http://man7.org/linux/man-pages/man2/preadv.2.html#NOTES
1026 * pos_l and pos_h, respectively, contain the
1027 * low order and high order 32 bits of offset.
1029 offset = (((off_t)uap->pos_h << (sizeof(offset) * 4)) <<
1030 (sizeof(offset) * 4)) | uap->pos_l;
1033 #ifdef COMPAT_LINUX32
1034 error = linux32_copyinuio(PTRIN(uap->vec), uap->vlen, &auio);
1036 error = copyinuio(uap->vec, uap->vlen, &auio);
1040 error = kern_preadv(td, uap->fd, auio, offset);
1046 linux_pwritev(struct thread *td, struct linux_pwritev_args *uap)
1053 * According http://man7.org/linux/man-pages/man2/pwritev.2.html#NOTES
1054 * pos_l and pos_h, respectively, contain the
1055 * low order and high order 32 bits of offset.
1057 offset = (((off_t)uap->pos_h << (sizeof(offset) * 4)) <<
1058 (sizeof(offset) * 4)) | uap->pos_l;
1061 #ifdef COMPAT_LINUX32
1062 error = linux32_copyinuio(PTRIN(uap->vec), uap->vlen, &auio);
1064 error = copyinuio(uap->vec, uap->vlen, &auio);
1068 error = kern_pwritev(td, uap->fd, auio, offset);
1074 linux_mount(struct thread *td, struct linux_mount_args *args)
1076 char fstypename[MFSNAMELEN];
1077 char *mntonname, *mntfromname;
1080 mntonname = malloc(MNAMELEN, M_TEMP, M_WAITOK);
1081 mntfromname = malloc(MNAMELEN, M_TEMP, M_WAITOK);
1082 error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1,
1086 error = copyinstr(args->specialfile, mntfromname, MNAMELEN - 1, NULL);
1089 error = copyinstr(args->dir, mntonname, MNAMELEN - 1, NULL);
1095 printf(ARGS(mount, "%s, %s, %s"),
1096 fstypename, mntfromname, mntonname);
1099 if (strcmp(fstypename, "ext2") == 0) {
1100 strcpy(fstypename, "ext2fs");
1101 } else if (strcmp(fstypename, "proc") == 0) {
1102 strcpy(fstypename, "linprocfs");
1103 } else if (strcmp(fstypename, "vfat") == 0) {
1104 strcpy(fstypename, "msdosfs");
1109 if ((args->rwflag & 0xffff0000) == 0xc0ed0000) {
1111 * Linux SYNC flag is not included; the closest equivalent
1112 * FreeBSD has is !ASYNC, which is our default.
1114 if (args->rwflag & LINUX_MS_RDONLY)
1115 fsflags |= MNT_RDONLY;
1116 if (args->rwflag & LINUX_MS_NOSUID)
1117 fsflags |= MNT_NOSUID;
1118 if (args->rwflag & LINUX_MS_NOEXEC)
1119 fsflags |= MNT_NOEXEC;
1120 if (args->rwflag & LINUX_MS_REMOUNT)
1121 fsflags |= MNT_UPDATE;
1124 error = kernel_vmount(fsflags,
1125 "fstype", fstypename,
1126 "fspath", mntonname,
1127 "from", mntfromname,
1130 free(mntonname, M_TEMP);
1131 free(mntfromname, M_TEMP);
1135 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1137 linux_oldumount(struct thread *td, struct linux_oldumount_args *args)
1139 struct linux_umount_args args2;
1141 args2.path = args->path;
1143 return (linux_umount(td, &args2));
1145 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1148 linux_umount(struct thread *td, struct linux_umount_args *args)
1150 struct unmount_args bsd;
1152 bsd.path = args->path;
1153 bsd.flags = args->flags; /* XXX correct? */
1154 return (sys_unmount(td, &bsd));
1158 * fcntl family of syscalls
1168 #if defined(__amd64__) && defined(COMPAT_LINUX32)
1174 linux_to_bsd_flock(struct l_flock *linux_flock, struct flock *bsd_flock)
1176 switch (linux_flock->l_type) {
1178 bsd_flock->l_type = F_RDLCK;
1181 bsd_flock->l_type = F_WRLCK;
1184 bsd_flock->l_type = F_UNLCK;
1187 bsd_flock->l_type = -1;
1190 bsd_flock->l_whence = linux_flock->l_whence;
1191 bsd_flock->l_start = (off_t)linux_flock->l_start;
1192 bsd_flock->l_len = (off_t)linux_flock->l_len;
1193 bsd_flock->l_pid = (pid_t)linux_flock->l_pid;
1194 bsd_flock->l_sysid = 0;
1198 bsd_to_linux_flock(struct flock *bsd_flock, struct l_flock *linux_flock)
1200 switch (bsd_flock->l_type) {
1202 linux_flock->l_type = LINUX_F_RDLCK;
1205 linux_flock->l_type = LINUX_F_WRLCK;
1208 linux_flock->l_type = LINUX_F_UNLCK;
1211 linux_flock->l_whence = bsd_flock->l_whence;
1212 linux_flock->l_start = (l_off_t)bsd_flock->l_start;
1213 linux_flock->l_len = (l_off_t)bsd_flock->l_len;
1214 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid;
1217 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1225 #if defined(__amd64__) && defined(COMPAT_LINUX32)
1231 linux_to_bsd_flock64(struct l_flock64 *linux_flock, struct flock *bsd_flock)
1233 switch (linux_flock->l_type) {
1235 bsd_flock->l_type = F_RDLCK;
1238 bsd_flock->l_type = F_WRLCK;
1241 bsd_flock->l_type = F_UNLCK;
1244 bsd_flock->l_type = -1;
1247 bsd_flock->l_whence = linux_flock->l_whence;
1248 bsd_flock->l_start = (off_t)linux_flock->l_start;
1249 bsd_flock->l_len = (off_t)linux_flock->l_len;
1250 bsd_flock->l_pid = (pid_t)linux_flock->l_pid;
1251 bsd_flock->l_sysid = 0;
1255 bsd_to_linux_flock64(struct flock *bsd_flock, struct l_flock64 *linux_flock)
1257 switch (bsd_flock->l_type) {
1259 linux_flock->l_type = LINUX_F_RDLCK;
1262 linux_flock->l_type = LINUX_F_WRLCK;
1265 linux_flock->l_type = LINUX_F_UNLCK;
1268 linux_flock->l_whence = bsd_flock->l_whence;
1269 linux_flock->l_start = (l_loff_t)bsd_flock->l_start;
1270 linux_flock->l_len = (l_loff_t)bsd_flock->l_len;
1271 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid;
1273 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1276 fcntl_common(struct thread *td, struct linux_fcntl_args *args)
1278 struct l_flock linux_flock;
1279 struct flock bsd_flock;
1280 cap_rights_t rights;
1285 switch (args->cmd) {
1287 return (kern_fcntl(td, args->fd, F_DUPFD, args->arg));
1290 return (kern_fcntl(td, args->fd, F_GETFD, 0));
1293 return (kern_fcntl(td, args->fd, F_SETFD, args->arg));
1296 error = kern_fcntl(td, args->fd, F_GETFL, 0);
1297 result = td->td_retval[0];
1298 td->td_retval[0] = 0;
1299 if (result & O_RDONLY)
1300 td->td_retval[0] |= LINUX_O_RDONLY;
1301 if (result & O_WRONLY)
1302 td->td_retval[0] |= LINUX_O_WRONLY;
1303 if (result & O_RDWR)
1304 td->td_retval[0] |= LINUX_O_RDWR;
1305 if (result & O_NDELAY)
1306 td->td_retval[0] |= LINUX_O_NONBLOCK;
1307 if (result & O_APPEND)
1308 td->td_retval[0] |= LINUX_O_APPEND;
1309 if (result & O_FSYNC)
1310 td->td_retval[0] |= LINUX_O_SYNC;
1311 if (result & O_ASYNC)
1312 td->td_retval[0] |= LINUX_FASYNC;
1313 #ifdef LINUX_O_NOFOLLOW
1314 if (result & O_NOFOLLOW)
1315 td->td_retval[0] |= LINUX_O_NOFOLLOW;
1317 #ifdef LINUX_O_DIRECT
1318 if (result & O_DIRECT)
1319 td->td_retval[0] |= LINUX_O_DIRECT;
1325 if (args->arg & LINUX_O_NDELAY)
1327 if (args->arg & LINUX_O_APPEND)
1329 if (args->arg & LINUX_O_SYNC)
1331 if (args->arg & LINUX_FASYNC)
1333 #ifdef LINUX_O_NOFOLLOW
1334 if (args->arg & LINUX_O_NOFOLLOW)
1337 #ifdef LINUX_O_DIRECT
1338 if (args->arg & LINUX_O_DIRECT)
1341 return (kern_fcntl(td, args->fd, F_SETFL, arg));
1344 error = copyin((void *)args->arg, &linux_flock,
1345 sizeof(linux_flock));
1348 linux_to_bsd_flock(&linux_flock, &bsd_flock);
1349 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock);
1352 bsd_to_linux_flock(&bsd_flock, &linux_flock);
1353 return (copyout(&linux_flock, (void *)args->arg,
1354 sizeof(linux_flock)));
1357 error = copyin((void *)args->arg, &linux_flock,
1358 sizeof(linux_flock));
1361 linux_to_bsd_flock(&linux_flock, &bsd_flock);
1362 return (kern_fcntl(td, args->fd, F_SETLK,
1363 (intptr_t)&bsd_flock));
1365 case LINUX_F_SETLKW:
1366 error = copyin((void *)args->arg, &linux_flock,
1367 sizeof(linux_flock));
1370 linux_to_bsd_flock(&linux_flock, &bsd_flock);
1371 return (kern_fcntl(td, args->fd, F_SETLKW,
1372 (intptr_t)&bsd_flock));
1374 case LINUX_F_GETOWN:
1375 return (kern_fcntl(td, args->fd, F_GETOWN, 0));
1377 case LINUX_F_SETOWN:
1379 * XXX some Linux applications depend on F_SETOWN having no
1380 * significant effect for pipes (SIGIO is not delivered for
1381 * pipes under Linux-2.2.35 at least).
1383 error = fget(td, args->fd,
1384 cap_rights_init(&rights, CAP_FCNTL), &fp);
1387 if (fp->f_type == DTYPE_PIPE) {
1393 return (kern_fcntl(td, args->fd, F_SETOWN, args->arg));
1395 case LINUX_F_DUPFD_CLOEXEC:
1396 return (kern_fcntl(td, args->fd, F_DUPFD_CLOEXEC, args->arg));
1403 linux_fcntl(struct thread *td, struct linux_fcntl_args *args)
1408 printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd);
1411 return (fcntl_common(td, args));
1414 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1416 linux_fcntl64(struct thread *td, struct linux_fcntl64_args *args)
1418 struct l_flock64 linux_flock;
1419 struct flock bsd_flock;
1420 struct linux_fcntl_args fcntl_args;
1424 if (ldebug(fcntl64))
1425 printf(ARGS(fcntl64, "%d, %08x, *"), args->fd, args->cmd);
1428 switch (args->cmd) {
1429 case LINUX_F_GETLK64:
1430 error = copyin((void *)args->arg, &linux_flock,
1431 sizeof(linux_flock));
1434 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
1435 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock);
1438 bsd_to_linux_flock64(&bsd_flock, &linux_flock);
1439 return (copyout(&linux_flock, (void *)args->arg,
1440 sizeof(linux_flock)));
1442 case LINUX_F_SETLK64:
1443 error = copyin((void *)args->arg, &linux_flock,
1444 sizeof(linux_flock));
1447 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
1448 return (kern_fcntl(td, args->fd, F_SETLK,
1449 (intptr_t)&bsd_flock));
1451 case LINUX_F_SETLKW64:
1452 error = copyin((void *)args->arg, &linux_flock,
1453 sizeof(linux_flock));
1456 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
1457 return (kern_fcntl(td, args->fd, F_SETLKW,
1458 (intptr_t)&bsd_flock));
1461 fcntl_args.fd = args->fd;
1462 fcntl_args.cmd = args->cmd;
1463 fcntl_args.arg = args->arg;
1464 return (fcntl_common(td, &fcntl_args));
1466 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1469 linux_chown(struct thread *td, struct linux_chown_args *args)
1474 LCONVPATHEXIST(td, args->path, &path);
1478 printf(ARGS(chown, "%s, %d, %d"), path, args->uid, args->gid);
1480 error = kern_fchownat(td, AT_FDCWD, path, UIO_SYSSPACE, args->uid,
1487 linux_fchownat(struct thread *td, struct linux_fchownat_args *args)
1490 int error, dfd, flag;
1492 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW)
1495 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
1496 LCONVPATHEXIST_AT(td, args->filename, &path, dfd);
1499 if (ldebug(fchownat))
1500 printf(ARGS(fchownat, "%s, %d, %d"), path, args->uid, args->gid);
1503 flag = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) == 0 ? 0 :
1504 AT_SYMLINK_NOFOLLOW;
1505 error = kern_fchownat(td, dfd, path, UIO_SYSSPACE, args->uid, args->gid,
1512 linux_lchown(struct thread *td, struct linux_lchown_args *args)
1517 LCONVPATHEXIST(td, args->path, &path);
1521 printf(ARGS(lchown, "%s, %d, %d"), path, args->uid, args->gid);
1523 error = kern_fchownat(td, AT_FDCWD, path, UIO_SYSSPACE, args->uid,
1524 args->gid, AT_SYMLINK_NOFOLLOW);
1530 convert_fadvice(int advice)
1533 case LINUX_POSIX_FADV_NORMAL:
1534 return (POSIX_FADV_NORMAL);
1535 case LINUX_POSIX_FADV_RANDOM:
1536 return (POSIX_FADV_RANDOM);
1537 case LINUX_POSIX_FADV_SEQUENTIAL:
1538 return (POSIX_FADV_SEQUENTIAL);
1539 case LINUX_POSIX_FADV_WILLNEED:
1540 return (POSIX_FADV_WILLNEED);
1541 case LINUX_POSIX_FADV_DONTNEED:
1542 return (POSIX_FADV_DONTNEED);
1543 case LINUX_POSIX_FADV_NOREUSE:
1544 return (POSIX_FADV_NOREUSE);
1551 linux_fadvise64(struct thread *td, struct linux_fadvise64_args *args)
1555 advice = convert_fadvice(args->advice);
1558 return (kern_posix_fadvise(td, args->fd, args->offset, args->len,
1562 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
1564 linux_fadvise64_64(struct thread *td, struct linux_fadvise64_64_args *args)
1568 advice = convert_fadvice(args->advice);
1571 return (kern_posix_fadvise(td, args->fd, args->offset, args->len,
1574 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
1577 linux_pipe(struct thread *td, struct linux_pipe_args *args)
1584 printf(ARGS(pipe, "*"));
1587 error = kern_pipe(td, fildes, 0, NULL, NULL);
1591 error = copyout(fildes, args->pipefds, sizeof(fildes));
1593 (void)kern_close(td, fildes[0]);
1594 (void)kern_close(td, fildes[1]);
1601 linux_pipe2(struct thread *td, struct linux_pipe2_args *args)
1608 printf(ARGS(pipe2, "*, %d"), args->flags);
1611 if ((args->flags & ~(LINUX_O_NONBLOCK | LINUX_O_CLOEXEC)) != 0)
1615 if ((args->flags & LINUX_O_NONBLOCK) != 0)
1616 flags |= O_NONBLOCK;
1617 if ((args->flags & LINUX_O_CLOEXEC) != 0)
1619 error = kern_pipe(td, fildes, flags, NULL, NULL);
1623 error = copyout(fildes, args->pipefds, sizeof(fildes));
1625 (void)kern_close(td, fildes[0]);
1626 (void)kern_close(td, fildes[1]);
1633 linux_dup3(struct thread *td, struct linux_dup3_args *args)
1638 if (args->oldfd == args->newfd)
1640 if ((args->flags & ~LINUX_O_CLOEXEC) != 0)
1642 if (args->flags & LINUX_O_CLOEXEC)
1643 cmd = F_DUP2FD_CLOEXEC;
1647 newfd = args->newfd;
1648 return (kern_fcntl(td, args->oldfd, cmd, newfd));
1652 linux_fallocate(struct thread *td, struct linux_fallocate_args *args)
1656 * We emulate only posix_fallocate system call for which
1659 if (args->mode != 0)
1662 return (kern_posix_fallocate(td, args->fd, args->offset,