The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/compat/linux/linux_stats.c

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    1 /*-
    2  * Copyright (c) 1994-1995 Søren Schmidt
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    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
   16  *
   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.
   27  */
   28 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD: releng/8.1/sys/compat/linux/linux_stats.c 193511 2009-06-05 14:55:22Z rwatson $");
   31 
   32 #include "opt_compat.h"
   33 
   34 #include <sys/param.h>
   35 #include <sys/dirent.h>
   36 #include <sys/file.h>
   37 #include <sys/filedesc.h>
   38 #include <sys/proc.h>
   39 #include <sys/malloc.h>
   40 #include <sys/mount.h>
   41 #include <sys/namei.h>
   42 #include <sys/stat.h>
   43 #include <sys/syscallsubr.h>
   44 #include <sys/systm.h>
   45 #include <sys/tty.h>
   46 #include <sys/vnode.h>
   47 #include <sys/conf.h>
   48 #include <sys/fcntl.h>
   49 
   50 #ifdef COMPAT_LINUX32
   51 #include <machine/../linux32/linux.h>
   52 #include <machine/../linux32/linux32_proto.h>
   53 #else
   54 #include <machine/../linux/linux.h>
   55 #include <machine/../linux/linux_proto.h>
   56 #endif
   57 
   58 #include <compat/linux/linux_util.h>
   59 #include <compat/linux/linux_file.h>
   60 
   61 #include <security/mac/mac_framework.h>
   62 
   63 static void
   64 translate_vnhook_major_minor(struct vnode *vp, struct stat *sb)
   65 {
   66         int major, minor;
   67 
   68         if (vp->v_type == VCHR && vp->v_rdev != NULL &&
   69             linux_driver_get_major_minor(vp->v_rdev->si_name,
   70             &major, &minor) == 0) {
   71                 sb->st_rdev = (major << 8 | minor);
   72         }
   73 }
   74 
   75 static int
   76 linux_kern_statat(struct thread *td, int flag, int fd, char *path,
   77     enum uio_seg pathseg, struct stat *sbp)
   78 {
   79 
   80         return (kern_statat_vnhook(td, flag, fd, path, pathseg, sbp,
   81             translate_vnhook_major_minor));
   82 }
   83 
   84 static int
   85 linux_kern_stat(struct thread *td, char *path, enum uio_seg pathseg,
   86     struct stat *sbp)
   87 {
   88 
   89         return (linux_kern_statat(td, 0, AT_FDCWD, path, pathseg, sbp));
   90 }
   91 
   92 static int
   93 linux_kern_lstat(struct thread *td, char *path, enum uio_seg pathseg,
   94     struct stat *sbp)
   95 {
   96 
   97         return (linux_kern_statat(td, AT_SYMLINK_NOFOLLOW, AT_FDCWD, path,
   98             pathseg, sbp));
   99 }
  100 
  101 /*
  102  * XXX: This was removed from newstat_copyout(), and almost identical
  103  * XXX: code was in stat64_copyout().  findcdev() needs to be replaced
  104  * XXX: with something that does lookup and locking properly.
  105  * XXX: When somebody fixes this: please try to avoid duplicating it.
  106  */
  107 #if 0
  108 static void
  109 disk_foo(struct somestat *tbuf)
  110 {
  111         struct cdevsw *cdevsw;
  112         struct cdev *dev;
  113 
  114         /* Lie about disk drives which are character devices
  115          * in FreeBSD but block devices under Linux.
  116          */
  117         if (S_ISCHR(tbuf.st_mode) &&
  118             (dev = findcdev(buf->st_rdev)) != NULL) {
  119                 cdevsw = dev_refthread(dev);
  120                 if (cdevsw != NULL) {
  121                         if (cdevsw->d_flags & D_DISK) {
  122                                 tbuf.st_mode &= ~S_IFMT;
  123                                 tbuf.st_mode |= S_IFBLK;
  124 
  125                                 /* XXX this may not be quite right */
  126                                 /* Map major number to 0 */
  127                                 tbuf.st_dev = minor(buf->st_dev) & 0xf;
  128                                 tbuf.st_rdev = buf->st_rdev & 0xff;
  129                         }
  130                         dev_relthread(dev);
  131                 }
  132         }
  133 
  134 }
  135 #endif
  136 
  137 static void
  138 translate_fd_major_minor(struct thread *td, int fd, struct stat *buf)
  139 {
  140         struct file *fp;
  141         struct vnode *vp;
  142         int major, minor;
  143 
  144         if ((!S_ISCHR(buf->st_mode) && !S_ISBLK(buf->st_mode)) ||
  145             fget(td, fd, &fp) != 0)
  146                 return;
  147         vp = fp->f_vnode;
  148         if (vp != NULL && vp->v_rdev != NULL &&
  149             linux_driver_get_major_minor(vp->v_rdev->si_name,
  150                                          &major, &minor) == 0) {
  151                 buf->st_rdev = (major << 8 | minor);
  152         } else if (fp->f_type == DTYPE_PTS) {
  153                 struct tty *tp = fp->f_data;
  154 
  155                 /* Convert the numbers for the slave device. */
  156                 if (linux_driver_get_major_minor(tp->t_dev->si_name,
  157                                          &major, &minor) == 0) {
  158                         buf->st_rdev = (major << 8 | minor);
  159                 }
  160         }
  161         fdrop(fp, td);
  162 }
  163 
  164 static int
  165 newstat_copyout(struct stat *buf, void *ubuf)
  166 {
  167         struct l_newstat tbuf;
  168 
  169         bzero(&tbuf, sizeof(tbuf));
  170         tbuf.st_dev = minor(buf->st_dev) | (major(buf->st_dev) << 8);
  171         tbuf.st_ino = buf->st_ino;
  172         tbuf.st_mode = buf->st_mode;
  173         tbuf.st_nlink = buf->st_nlink;
  174         tbuf.st_uid = buf->st_uid;
  175         tbuf.st_gid = buf->st_gid;
  176         tbuf.st_rdev = buf->st_rdev;
  177         tbuf.st_size = buf->st_size;
  178         tbuf.st_atime = buf->st_atime;
  179         tbuf.st_mtime = buf->st_mtime;
  180         tbuf.st_ctime = buf->st_ctime;
  181         tbuf.st_blksize = buf->st_blksize;
  182         tbuf.st_blocks = buf->st_blocks;
  183 
  184         return (copyout(&tbuf, ubuf, sizeof(tbuf)));
  185 }
  186 
  187 int
  188 linux_newstat(struct thread *td, struct linux_newstat_args *args)
  189 {
  190         struct stat buf;
  191         char *path;
  192         int error;
  193 
  194         LCONVPATHEXIST(td, args->path, &path);
  195 
  196 #ifdef DEBUG
  197         if (ldebug(newstat))
  198                 printf(ARGS(newstat, "%s, *"), path);
  199 #endif
  200 
  201         error = linux_kern_stat(td, path, UIO_SYSSPACE, &buf);
  202         LFREEPATH(path);
  203         if (error)
  204                 return (error);
  205         return (newstat_copyout(&buf, args->buf));
  206 }
  207 
  208 int
  209 linux_newlstat(struct thread *td, struct linux_newlstat_args *args)
  210 {
  211         struct stat sb;
  212         char *path;
  213         int error;
  214 
  215         LCONVPATHEXIST(td, args->path, &path);
  216 
  217 #ifdef DEBUG
  218         if (ldebug(newlstat))
  219                 printf(ARGS(newlstat, "%s, *"), path);
  220 #endif
  221 
  222         error = linux_kern_lstat(td, path, UIO_SYSSPACE, &sb);
  223         LFREEPATH(path);
  224         if (error)
  225                 return (error);
  226         return (newstat_copyout(&sb, args->buf));
  227 }
  228 
  229 int
  230 linux_newfstat(struct thread *td, struct linux_newfstat_args *args)
  231 {
  232         struct stat buf;
  233         int error;
  234 
  235 #ifdef DEBUG
  236         if (ldebug(newfstat))
  237                 printf(ARGS(newfstat, "%d, *"), args->fd);
  238 #endif
  239 
  240         error = kern_fstat(td, args->fd, &buf);
  241         translate_fd_major_minor(td, args->fd, &buf);
  242         if (!error)
  243                 error = newstat_copyout(&buf, args->buf);
  244 
  245         return (error);
  246 }
  247 
  248 static int
  249 stat_copyout(struct stat *buf, void *ubuf)
  250 {
  251         struct l_stat lbuf;
  252         
  253         bzero(&lbuf, sizeof(lbuf));
  254         lbuf.st_dev = buf->st_dev;
  255         lbuf.st_ino = buf->st_ino;
  256         lbuf.st_mode = buf->st_mode;
  257         lbuf.st_nlink = buf->st_nlink;
  258         lbuf.st_uid = buf->st_uid;
  259         lbuf.st_gid = buf->st_gid;
  260         lbuf.st_rdev = buf->st_rdev;
  261         if (buf->st_size < (quad_t)1 << 32)
  262                 lbuf.st_size = buf->st_size;
  263         else
  264                 lbuf.st_size = -2;
  265         lbuf.st_atime = buf->st_atime;
  266         lbuf.st_mtime = buf->st_mtime;
  267         lbuf.st_ctime = buf->st_ctime;
  268         lbuf.st_blksize = buf->st_blksize;
  269         lbuf.st_blocks = buf->st_blocks;
  270         lbuf.st_flags = buf->st_flags;
  271         lbuf.st_gen = buf->st_gen;
  272 
  273         return (copyout(&lbuf, ubuf, sizeof(lbuf)));
  274 }
  275 
  276 int
  277 linux_stat(struct thread *td, struct linux_stat_args *args)
  278 {
  279         struct stat buf;
  280         char *path;
  281         int error;
  282 
  283         LCONVPATHEXIST(td, args->path, &path);
  284 
  285 #ifdef DEBUG
  286         if (ldebug(stat))
  287                 printf(ARGS(stat, "%s, *"), path);
  288 #endif
  289         error = linux_kern_stat(td, path, UIO_SYSSPACE, &buf);
  290         if (error) {
  291                 LFREEPATH(path);
  292                 return (error);
  293         }
  294         LFREEPATH(path);
  295         return(stat_copyout(&buf, args->up));
  296 }
  297 
  298 int
  299 linux_lstat(struct thread *td, struct linux_lstat_args *args)
  300 {
  301         struct stat buf;
  302         char *path;
  303         int error;
  304 
  305         LCONVPATHEXIST(td, args->path, &path);
  306 
  307 #ifdef DEBUG
  308         if (ldebug(lstat))
  309                 printf(ARGS(lstat, "%s, *"), path);
  310 #endif
  311         error = linux_kern_lstat(td, path, UIO_SYSSPACE, &buf);
  312         if (error) {
  313                 LFREEPATH(path);
  314                 return (error);
  315         }
  316         LFREEPATH(path);
  317         return(stat_copyout(&buf, args->up));
  318 }
  319 
  320 /* XXX - All fields of type l_int are defined as l_long on i386 */
  321 struct l_statfs {
  322         l_int           f_type;
  323         l_int           f_bsize;
  324         l_int           f_blocks;
  325         l_int           f_bfree;
  326         l_int           f_bavail;
  327         l_int           f_files;
  328         l_int           f_ffree;
  329         l_fsid_t        f_fsid;
  330         l_int           f_namelen;
  331         l_int           f_spare[6];
  332 };
  333 
  334 #define LINUX_CODA_SUPER_MAGIC  0x73757245L
  335 #define LINUX_EXT2_SUPER_MAGIC  0xEF53L
  336 #define LINUX_HPFS_SUPER_MAGIC  0xf995e849L
  337 #define LINUX_ISOFS_SUPER_MAGIC 0x9660L
  338 #define LINUX_MSDOS_SUPER_MAGIC 0x4d44L
  339 #define LINUX_NCP_SUPER_MAGIC   0x564cL
  340 #define LINUX_NFS_SUPER_MAGIC   0x6969L
  341 #define LINUX_NTFS_SUPER_MAGIC  0x5346544EL
  342 #define LINUX_PROC_SUPER_MAGIC  0x9fa0L
  343 #define LINUX_UFS_SUPER_MAGIC   0x00011954L     /* XXX - UFS_MAGIC in Linux */
  344 #define LINUX_DEVFS_SUPER_MAGIC 0x1373L
  345 
  346 static long
  347 bsd_to_linux_ftype(const char *fstypename)
  348 {
  349         int i;
  350         static struct {const char *bsd_name; long linux_type;} b2l_tbl[] = {
  351                 {"ufs",     LINUX_UFS_SUPER_MAGIC},
  352                 {"cd9660",  LINUX_ISOFS_SUPER_MAGIC},
  353                 {"nfs",     LINUX_NFS_SUPER_MAGIC},
  354                 {"ext2fs",  LINUX_EXT2_SUPER_MAGIC},
  355                 {"procfs",  LINUX_PROC_SUPER_MAGIC},
  356                 {"msdosfs", LINUX_MSDOS_SUPER_MAGIC},
  357                 {"ntfs",    LINUX_NTFS_SUPER_MAGIC},
  358                 {"nwfs",    LINUX_NCP_SUPER_MAGIC},
  359                 {"hpfs",    LINUX_HPFS_SUPER_MAGIC},
  360                 {"coda",    LINUX_CODA_SUPER_MAGIC},
  361                 {"devfs",   LINUX_DEVFS_SUPER_MAGIC},
  362                 {NULL,      0L}};
  363 
  364         for (i = 0; b2l_tbl[i].bsd_name != NULL; i++)
  365                 if (strcmp(b2l_tbl[i].bsd_name, fstypename) == 0)
  366                         return (b2l_tbl[i].linux_type);
  367 
  368         return (0L);
  369 }
  370 
  371 static void
  372 bsd_to_linux_statfs(struct statfs *bsd_statfs, struct l_statfs *linux_statfs)
  373 {
  374 
  375         linux_statfs->f_type = bsd_to_linux_ftype(bsd_statfs->f_fstypename);
  376         linux_statfs->f_bsize = bsd_statfs->f_bsize;
  377         linux_statfs->f_blocks = bsd_statfs->f_blocks;
  378         linux_statfs->f_bfree = bsd_statfs->f_bfree;
  379         linux_statfs->f_bavail = bsd_statfs->f_bavail;
  380         linux_statfs->f_ffree = bsd_statfs->f_ffree;
  381         linux_statfs->f_files = bsd_statfs->f_files;
  382         linux_statfs->f_fsid.val[0] = bsd_statfs->f_fsid.val[0];
  383         linux_statfs->f_fsid.val[1] = bsd_statfs->f_fsid.val[1];
  384         linux_statfs->f_namelen = MAXNAMLEN;
  385 }
  386 
  387 int
  388 linux_statfs(struct thread *td, struct linux_statfs_args *args)
  389 {
  390         struct l_statfs linux_statfs;
  391         struct statfs bsd_statfs;
  392         char *path;
  393         int error;
  394 
  395         LCONVPATHEXIST(td, args->path, &path);
  396 
  397 #ifdef DEBUG
  398         if (ldebug(statfs))
  399                 printf(ARGS(statfs, "%s, *"), path);
  400 #endif
  401         error = kern_statfs(td, path, UIO_SYSSPACE, &bsd_statfs);
  402         LFREEPATH(path);
  403         if (error)
  404                 return (error);
  405         bsd_to_linux_statfs(&bsd_statfs, &linux_statfs);
  406         return copyout(&linux_statfs, args->buf, sizeof(linux_statfs));
  407 }
  408 
  409 static void
  410 bsd_to_linux_statfs64(struct statfs *bsd_statfs, struct l_statfs64 *linux_statfs)
  411 {
  412 
  413         linux_statfs->f_type = bsd_to_linux_ftype(bsd_statfs->f_fstypename);
  414         linux_statfs->f_bsize = bsd_statfs->f_bsize;
  415         linux_statfs->f_blocks = bsd_statfs->f_blocks;
  416         linux_statfs->f_bfree = bsd_statfs->f_bfree;
  417         linux_statfs->f_bavail = bsd_statfs->f_bavail;
  418         linux_statfs->f_ffree = bsd_statfs->f_ffree;
  419         linux_statfs->f_files = bsd_statfs->f_files;
  420         linux_statfs->f_fsid.val[0] = bsd_statfs->f_fsid.val[0];
  421         linux_statfs->f_fsid.val[1] = bsd_statfs->f_fsid.val[1];
  422         linux_statfs->f_namelen = MAXNAMLEN;
  423 }
  424 
  425 int
  426 linux_statfs64(struct thread *td, struct linux_statfs64_args *args)
  427 {
  428         struct l_statfs64 linux_statfs;
  429         struct statfs bsd_statfs;
  430         char *path;
  431         int error;
  432 
  433         if (args->bufsize != sizeof(struct l_statfs64))
  434                 return EINVAL;
  435 
  436         LCONVPATHEXIST(td, args->path, &path);
  437 
  438 #ifdef DEBUG
  439         if (ldebug(statfs64))
  440                 printf(ARGS(statfs64, "%s, *"), path);
  441 #endif
  442         error = kern_statfs(td, path, UIO_SYSSPACE, &bsd_statfs);
  443         LFREEPATH(path);
  444         if (error)
  445                 return (error);
  446         bsd_to_linux_statfs64(&bsd_statfs, &linux_statfs);
  447         return copyout(&linux_statfs, args->buf, sizeof(linux_statfs));
  448 }
  449 
  450 int
  451 linux_fstatfs(struct thread *td, struct linux_fstatfs_args *args)
  452 {
  453         struct l_statfs linux_statfs;
  454         struct statfs bsd_statfs;
  455         int error;
  456 
  457 #ifdef DEBUG
  458         if (ldebug(fstatfs))
  459                 printf(ARGS(fstatfs, "%d, *"), args->fd);
  460 #endif
  461         error = kern_fstatfs(td, args->fd, &bsd_statfs);
  462         if (error)
  463                 return error;
  464         bsd_to_linux_statfs(&bsd_statfs, &linux_statfs);
  465         return copyout(&linux_statfs, args->buf, sizeof(linux_statfs));
  466 }
  467 
  468 struct l_ustat
  469 {
  470         l_daddr_t       f_tfree;
  471         l_ino_t         f_tinode;
  472         char            f_fname[6];
  473         char            f_fpack[6];
  474 };
  475 
  476 int
  477 linux_ustat(struct thread *td, struct linux_ustat_args *args)
  478 {
  479 #ifdef DEBUG
  480         if (ldebug(ustat))
  481                 printf(ARGS(ustat, "%d, *"), args->dev);
  482 #endif
  483 
  484         return (EOPNOTSUPP);
  485 }
  486 
  487 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
  488 
  489 static int
  490 stat64_copyout(struct stat *buf, void *ubuf)
  491 {
  492         struct l_stat64 lbuf;
  493 
  494         bzero(&lbuf, sizeof(lbuf));
  495         lbuf.st_dev = minor(buf->st_dev) | (major(buf->st_dev) << 8);
  496         lbuf.st_ino = buf->st_ino;
  497         lbuf.st_mode = buf->st_mode;
  498         lbuf.st_nlink = buf->st_nlink;
  499         lbuf.st_uid = buf->st_uid;
  500         lbuf.st_gid = buf->st_gid;
  501         lbuf.st_rdev = buf->st_rdev;
  502         lbuf.st_size = buf->st_size;
  503         lbuf.st_atime = buf->st_atime;
  504         lbuf.st_mtime = buf->st_mtime;
  505         lbuf.st_ctime = buf->st_ctime;
  506         lbuf.st_blksize = buf->st_blksize;
  507         lbuf.st_blocks = buf->st_blocks;
  508 
  509         /*
  510          * The __st_ino field makes all the difference. In the Linux kernel
  511          * it is conditionally compiled based on STAT64_HAS_BROKEN_ST_INO,
  512          * but without the assignment to __st_ino the runtime linker refuses
  513          * to mmap(2) any shared libraries. I guess it's broken alright :-)
  514          */
  515         lbuf.__st_ino = buf->st_ino;
  516 
  517         return (copyout(&lbuf, ubuf, sizeof(lbuf)));
  518 }
  519 
  520 int
  521 linux_stat64(struct thread *td, struct linux_stat64_args *args)
  522 {
  523         struct stat buf;
  524         char *filename;
  525         int error;
  526 
  527         LCONVPATHEXIST(td, args->filename, &filename);
  528 
  529 #ifdef DEBUG
  530         if (ldebug(stat64))
  531                 printf(ARGS(stat64, "%s, *"), filename);
  532 #endif
  533 
  534         error = linux_kern_stat(td, filename, UIO_SYSSPACE, &buf);
  535         LFREEPATH(filename);
  536         if (error)
  537                 return (error);
  538         return (stat64_copyout(&buf, args->statbuf));
  539 }
  540 
  541 int
  542 linux_lstat64(struct thread *td, struct linux_lstat64_args *args)
  543 {
  544         struct stat sb;
  545         char *filename;
  546         int error;
  547 
  548         LCONVPATHEXIST(td, args->filename, &filename);
  549 
  550 #ifdef DEBUG
  551         if (ldebug(lstat64))
  552                 printf(ARGS(lstat64, "%s, *"), args->filename);
  553 #endif
  554 
  555         error = linux_kern_lstat(td, filename, UIO_SYSSPACE, &sb);
  556         LFREEPATH(filename);
  557         if (error)
  558                 return (error);
  559         return (stat64_copyout(&sb, args->statbuf));
  560 }
  561 
  562 int
  563 linux_fstat64(struct thread *td, struct linux_fstat64_args *args)
  564 {
  565         struct stat buf;
  566         int error;
  567 
  568 #ifdef DEBUG
  569         if (ldebug(fstat64))
  570                 printf(ARGS(fstat64, "%d, *"), args->fd);
  571 #endif
  572 
  573         error = kern_fstat(td, args->fd, &buf);
  574         translate_fd_major_minor(td, args->fd, &buf);
  575         if (!error)
  576                 error = stat64_copyout(&buf, args->statbuf);
  577 
  578         return (error);
  579 }
  580 
  581 int
  582 linux_fstatat64(struct thread *td, struct linux_fstatat64_args *args)
  583 {
  584         char *path;
  585         int error, dfd, flag;
  586         struct stat buf;
  587 
  588         if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW)
  589                 return (EINVAL);
  590         flag = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) ?
  591             AT_SYMLINK_NOFOLLOW : 0;
  592 
  593         dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
  594         LCONVPATHEXIST_AT(td, args->pathname, &path, dfd);
  595 
  596 #ifdef DEBUG
  597         if (ldebug(fstatat64))
  598                 printf(ARGS(fstatat64, "%i, %s, %i"), args->dfd, path, args->flag);
  599 #endif
  600 
  601         error = linux_kern_statat(td, flag, dfd, path, UIO_SYSSPACE, &buf);
  602         if (!error)
  603                 error = stat64_copyout(&buf, args->statbuf);
  604         LFREEPATH(path);
  605 
  606         return (error);
  607 }
  608 
  609 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */

Cache object: 6d975125904cf29f246d0d236a776f16


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.