2f304845e2
Right now size of the structure is 472 bytes on amd64, which is already large and stack allocations are indesirable. With the ino64 work, MNAMELEN is increased to 1024, which will make it impossible to have struct statfs on the stack. Extracted from: ino64 work by gleb Discussed with: mckusick Tested by: pho Sponsored by: The FreeBSD Foundation MFC after: 1 week
244 lines
6.3 KiB
C
244 lines
6.3 KiB
C
/*-
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* Copyright (c) 1995 Scott Bartram
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* Copyright (c) 1995 Steven Wallace
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/namei.h>
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#include <sys/fcntl.h>
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#include <sys/file.h>
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#include <sys/stat.h>
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#include <sys/filedesc.h>
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#include <sys/jail.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/mount.h>
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#include <sys/malloc.h>
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#include <sys/vnode.h>
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#include <sys/syscallsubr.h>
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#include <sys/sysctl.h>
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#include <sys/sysproto.h>
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#include <i386/ibcs2/ibcs2_signal.h>
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#include <i386/ibcs2/ibcs2_stat.h>
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#include <i386/ibcs2/ibcs2_statfs.h>
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#include <i386/ibcs2/ibcs2_proto.h>
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#include <i386/ibcs2/ibcs2_util.h>
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#include <i386/ibcs2/ibcs2_utsname.h>
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static void bsd_stat2ibcs_stat(struct stat *, struct ibcs2_stat *);
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static int cvt_statfs(struct statfs *, caddr_t, int);
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static void
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bsd_stat2ibcs_stat(st, st4)
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struct stat *st;
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struct ibcs2_stat *st4;
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{
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bzero(st4, sizeof(*st4));
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st4->st_dev = (ibcs2_dev_t)st->st_dev;
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st4->st_ino = (ibcs2_ino_t)st->st_ino;
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st4->st_mode = (ibcs2_mode_t)st->st_mode;
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st4->st_nlink= (ibcs2_nlink_t)st->st_nlink;
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st4->st_uid = (ibcs2_uid_t)st->st_uid;
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st4->st_gid = (ibcs2_gid_t)st->st_gid;
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st4->st_rdev = (ibcs2_dev_t)st->st_rdev;
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if (st->st_size < (quad_t)1 << 32)
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st4->st_size = (ibcs2_off_t)st->st_size;
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else
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st4->st_size = -2;
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st4->st_atim = (ibcs2_time_t)st->st_atim.tv_sec;
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st4->st_mtim = (ibcs2_time_t)st->st_mtim.tv_sec;
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st4->st_ctim = (ibcs2_time_t)st->st_ctim.tv_sec;
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}
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static int
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cvt_statfs(sp, buf, len)
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struct statfs *sp;
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caddr_t buf;
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int len;
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{
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struct ibcs2_statfs ssfs;
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if (len < 0)
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return (EINVAL);
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else if (len > sizeof(ssfs))
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len = sizeof(ssfs);
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bzero(&ssfs, sizeof ssfs);
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ssfs.f_fstyp = 0;
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ssfs.f_bsize = sp->f_bsize;
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ssfs.f_frsize = 0;
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ssfs.f_blocks = sp->f_blocks;
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ssfs.f_bfree = sp->f_bfree;
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ssfs.f_files = sp->f_files;
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ssfs.f_ffree = sp->f_ffree;
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ssfs.f_fname[0] = 0;
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ssfs.f_fpack[0] = 0;
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return copyout((caddr_t)&ssfs, buf, len);
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}
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int
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ibcs2_statfs(td, uap)
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struct thread *td;
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struct ibcs2_statfs_args *uap;
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{
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struct statfs *sf;
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char *path;
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int error;
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CHECKALTEXIST(td, uap->path, &path);
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sf = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK);
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error = kern_statfs(td, path, UIO_SYSSPACE, sf);
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free(path, M_TEMP);
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if (error == 0)
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error = cvt_statfs(sf, (caddr_t)uap->buf, uap->len);
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free(sf, M_STATFS);
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return (error);
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}
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int
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ibcs2_fstatfs(td, uap)
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struct thread *td;
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struct ibcs2_fstatfs_args *uap;
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{
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struct statfs *sf;
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int error;
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sf = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK);
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error = kern_fstatfs(td, uap->fd, sf);
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if (error == 0)
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error = cvt_statfs(sf, (caddr_t)uap->buf, uap->len);
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free(sf, M_STATFS);
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return (error);
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}
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int
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ibcs2_stat(td, uap)
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struct thread *td;
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struct ibcs2_stat_args *uap;
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{
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struct ibcs2_stat ibcs2_st;
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struct stat st;
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char *path;
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int error;
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CHECKALTEXIST(td, uap->path, &path);
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error = kern_statat(td, 0, AT_FDCWD, path, UIO_SYSSPACE, &st, NULL);
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free(path, M_TEMP);
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if (error)
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return (error);
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bsd_stat2ibcs_stat(&st, &ibcs2_st);
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return copyout((caddr_t)&ibcs2_st, (caddr_t)uap->st,
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ibcs2_stat_len);
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}
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int
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ibcs2_lstat(td, uap)
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struct thread *td;
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struct ibcs2_lstat_args *uap;
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{
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struct ibcs2_stat ibcs2_st;
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struct stat st;
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char *path;
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int error;
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CHECKALTEXIST(td, uap->path, &path);
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error = kern_statat(td, AT_SYMLINK_NOFOLLOW, AT_FDCWD, path,
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UIO_SYSSPACE, &st, NULL);
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free(path, M_TEMP);
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if (error)
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return (error);
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bsd_stat2ibcs_stat(&st, &ibcs2_st);
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return copyout((caddr_t)&ibcs2_st, (caddr_t)uap->st,
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ibcs2_stat_len);
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}
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int
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ibcs2_fstat(td, uap)
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struct thread *td;
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struct ibcs2_fstat_args *uap;
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{
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struct ibcs2_stat ibcs2_st;
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struct stat st;
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int error;
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error = kern_fstat(td, uap->fd, &st);
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if (error)
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return (error);
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bsd_stat2ibcs_stat(&st, &ibcs2_st);
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return copyout((caddr_t)&ibcs2_st, (caddr_t)uap->st,
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ibcs2_stat_len);
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}
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int
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ibcs2_utssys(td, uap)
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struct thread *td;
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struct ibcs2_utssys_args *uap;
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{
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switch (uap->flag) {
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case 0: /* uname(2) */
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{
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char machine_name[9], *p;
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struct ibcs2_utsname sut;
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bzero(&sut, ibcs2_utsname_len);
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strncpy(sut.sysname,
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IBCS2_UNAME_SYSNAME, sizeof(sut.sysname) - 1);
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strncpy(sut.release,
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IBCS2_UNAME_RELEASE, sizeof(sut.release) - 1);
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strncpy(sut.version,
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IBCS2_UNAME_VERSION, sizeof(sut.version) - 1);
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getcredhostname(td->td_ucred, machine_name,
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sizeof(machine_name) - 1);
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p = strchr(machine_name, '.');
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if ( p )
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*p = '\0';
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strncpy(sut.nodename, machine_name, sizeof(sut.nodename) - 1);
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strncpy(sut.machine, machine, sizeof(sut.machine) - 1);
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DPRINTF(("IBCS2 uname: sys=%s rel=%s ver=%s node=%s mach=%s\n",
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sut.sysname, sut.release, sut.version, sut.nodename,
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sut.machine));
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return copyout((caddr_t)&sut, (caddr_t)uap->a1,
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ibcs2_utsname_len);
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}
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case 2: /* ustat(2) */
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{
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return ENOSYS; /* XXX - TODO */
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}
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default:
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return ENOSYS;
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}
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}
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