diff options
Diffstat (limited to 'sys/i386/linux/linux_stats.c')
-rw-r--r-- | sys/i386/linux/linux_stats.c | 161 |
1 files changed, 94 insertions, 67 deletions
diff --git a/sys/i386/linux/linux_stats.c b/sys/i386/linux/linux_stats.c index 327343b..8d562e0 100644 --- a/sys/i386/linux/linux_stats.c +++ b/sys/i386/linux/linux_stats.c @@ -25,7 +25,7 @@ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * - * $Id: linux_stats.c,v 1.3 1995/11/22 07:43:51 bde Exp $ + * $Id: linux_stats.c,v 1.4 1996/01/30 12:23:17 peter Exp $ */ #include <sys/param.h> @@ -42,7 +42,8 @@ #include <sys/pipe.h> #include <i386/linux/linux.h> -#include <i386/linux/sysproto.h> +#include <i386/linux/linux_proto.h> +#include <i386/linux/linux_util.h> struct linux_newstat { unsigned short stat_dev; @@ -67,10 +68,6 @@ struct linux_newstat { unsigned long __unused5; }; -struct linux_newstat_args { - char *path; - struct linux_newstat *buf; -}; static int newstat_copyout(struct stat *buf, void *ubuf) @@ -97,9 +94,12 @@ int linux_newstat(struct proc *p, struct linux_newstat_args *args, int *retval) { struct stat buf; - struct linux_newstat tbuf; struct nameidata nd; int error; + caddr_t sg; + + sg = stackgap_init(); + CHECKALTEXIST(p, &sg, args->path); #ifdef DEBUG printf("Linux-emul(%d): newstat(%s, *)\n", p->p_pid, args->path); @@ -115,44 +115,78 @@ linux_newstat(struct proc *p, struct linux_newstat_args *args, int *retval) return error; } +/* + * Get file status; this version does not follow links. + */ int -linux_newlstat(struct proc *p, struct linux_newstat_args *args, int *retval) +linux_newlstat(p, uap, retval) + struct proc *p; + struct linux_newlstat_args *uap; + int *retval; { - struct stat buf; - struct linux_newstat tbuf; - struct nameidata nd; - int error; + int error; + struct vnode *vp, *dvp; + struct stat sb, sb1; + struct nameidata nd; + caddr_t sg; + + sg = stackgap_init(); + CHECKALTEXIST(p, &sg, uap->path); #ifdef DEBUG - printf("Linux-emul(%d): newlstat(%s, *)\n", p->p_pid, args->path); + printf("Linux-emul(%d): newlstat(%s, *)\n", p->p_pid, uap->path); #endif - NDINIT(&nd, LOOKUP, LOCKLEAF|FOLLOW, UIO_USERSPACE, args->path, p); - error = namei(&nd); - if (!error) { - error = vn_stat(nd.ni_vp, &buf, p); - vput(nd.ni_vp); - } - if (!error) - error = newstat_copyout(&buf, args->buf); - return error; + NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | LOCKPARENT, UIO_USERSPACE, + uap->path, p); + error = namei(&nd); + if (error) + return (error); + /* + * For symbolic links, always return the attributes of its + * containing directory, except for mode, size, and links. + */ + vp = nd.ni_vp; + dvp = nd.ni_dvp; + if (vp->v_type != VLNK) { + if (dvp == vp) + vrele(dvp); + else + vput(dvp); + error = vn_stat(vp, &sb, p); + vput(vp); + if (error) + return (error); + } else { + error = vn_stat(dvp, &sb, p); + vput(dvp); + if (error) { + vput(vp); + return (error); + } + error = vn_stat(vp, &sb1, p); + vput(vp); + if (error) + return (error); + sb.st_mode &= ~S_IFDIR; + sb.st_mode |= S_IFLNK; + sb.st_nlink = sb1.st_nlink; + sb.st_size = sb1.st_size; + sb.st_blocks = sb1.st_blocks; + } + error = newstat_copyout(&sb, uap->buf); + return (error); } -struct linux_newfstat_args { - int fd; - struct linux_newstat *buf; -}; - int linux_newfstat(struct proc *p, struct linux_newfstat_args *args, int *retval) { - struct linux_newstat tbuf; struct filedesc *fdp = p->p_fd; struct file *fp; struct stat buf; int error; #ifdef DEBUG - printf("Linux-emul(%d): newlstat(%d, *)\n", p->p_pid, args->fd); + printf("Linux-emul(%d): newfstat(%d, *)\n", p->p_pid, args->fd); #endif if ((unsigned)args->fd >= fdp->fd_nfiles || (fp = fdp->fd_ofiles[args->fd]) == NULL) @@ -175,7 +209,7 @@ linux_newfstat(struct proc *p, struct linux_newfstat_args *args, int *retval) return error; } -struct linux_statfs { +struct linux_statfs_buf { long ftype; long fbsize; long fblocks; @@ -188,12 +222,6 @@ struct linux_statfs { long fspare[6]; }; - -struct linux_statfs_args { - char *path; - struct statfs *buf; -}; - int linux_statfs(struct proc *p, struct linux_statfs_args *args, int *retval) { @@ -201,8 +229,12 @@ linux_statfs(struct proc *p, struct linux_statfs_args *args, int *retval) struct nameidata *ndp; struct statfs *bsd_statfs; struct nameidata nd; - struct linux_statfs linux_statfs; + struct linux_statfs_buf linux_statfs_buf; int error; + caddr_t sg; + + sg = stackgap_init(); + CHECKALTEXIST(p, &sg, args->path); #ifdef DEBUG printf("Linux-emul(%d): statfs(%s, *)\n", p->p_pid, args->path); @@ -217,32 +249,27 @@ linux_statfs(struct proc *p, struct linux_statfs_args *args, int *retval) if (error = VFS_STATFS(mp, bsd_statfs, p)) return error; bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; - linux_statfs.ftype = bsd_statfs->f_type; - linux_statfs.fbsize = bsd_statfs->f_bsize; - linux_statfs.fblocks = bsd_statfs->f_blocks; - linux_statfs.fbfree = bsd_statfs->f_bfree; - linux_statfs.fbavail = bsd_statfs->f_bavail; - linux_statfs.fffree = bsd_statfs->f_ffree; - linux_statfs.ffiles = bsd_statfs->f_files; - linux_statfs.ffsid.val[0] = bsd_statfs->f_fsid.val[0]; - linux_statfs.ffsid.val[1] = bsd_statfs->f_fsid.val[1]; - linux_statfs.fnamelen = MAXNAMLEN; - return copyout((caddr_t)&linux_statfs, (caddr_t)args->buf, - sizeof(struct linux_statfs)); + linux_statfs_buf.ftype = bsd_statfs->f_type; + linux_statfs_buf.fbsize = bsd_statfs->f_bsize; + linux_statfs_buf.fblocks = bsd_statfs->f_blocks; + linux_statfs_buf.fbfree = bsd_statfs->f_bfree; + linux_statfs_buf.fbavail = bsd_statfs->f_bavail; + linux_statfs_buf.fffree = bsd_statfs->f_ffree; + linux_statfs_buf.ffiles = bsd_statfs->f_files; + linux_statfs_buf.ffsid.val[0] = bsd_statfs->f_fsid.val[0]; + linux_statfs_buf.ffsid.val[1] = bsd_statfs->f_fsid.val[1]; + linux_statfs_buf.fnamelen = MAXNAMLEN; + return copyout((caddr_t)&linux_statfs_buf, (caddr_t)args->buf, + sizeof(struct linux_statfs_buf)); } -struct linux_fstatfs_args { - int fd; - struct statfs *buf; -}; - int linux_fstatfs(struct proc *p, struct linux_fstatfs_args *args, int *retval) { struct file *fp; struct mount *mp; struct statfs *bsd_statfs; - struct linux_statfs linux_statfs; + struct linux_statfs_buf linux_statfs_buf; int error; #ifdef DEBUG @@ -255,16 +282,16 @@ linux_fstatfs(struct proc *p, struct linux_fstatfs_args *args, int *retval) if (error = VFS_STATFS(mp, bsd_statfs, p)) return error; bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; - linux_statfs.ftype = bsd_statfs->f_type; - linux_statfs.fbsize = bsd_statfs->f_bsize; - linux_statfs.fblocks = bsd_statfs->f_blocks; - linux_statfs.fbfree = bsd_statfs->f_bfree; - linux_statfs.fbavail = bsd_statfs->f_bavail; - linux_statfs.fffree = bsd_statfs->f_ffree; - linux_statfs.ffiles = bsd_statfs->f_files; - linux_statfs.ffsid.val[0] = bsd_statfs->f_fsid.val[0]; - linux_statfs.ffsid.val[1] = bsd_statfs->f_fsid.val[1]; - linux_statfs.fnamelen = MAXNAMLEN; - return copyout((caddr_t)&linux_statfs, (caddr_t)args->buf, - sizeof(struct linux_statfs)); + linux_statfs_buf.ftype = bsd_statfs->f_type; + linux_statfs_buf.fbsize = bsd_statfs->f_bsize; + linux_statfs_buf.fblocks = bsd_statfs->f_blocks; + linux_statfs_buf.fbfree = bsd_statfs->f_bfree; + linux_statfs_buf.fbavail = bsd_statfs->f_bavail; + linux_statfs_buf.fffree = bsd_statfs->f_ffree; + linux_statfs_buf.ffiles = bsd_statfs->f_files; + linux_statfs_buf.ffsid.val[0] = bsd_statfs->f_fsid.val[0]; + linux_statfs_buf.ffsid.val[1] = bsd_statfs->f_fsid.val[1]; + linux_statfs_buf.fnamelen = MAXNAMLEN; + return copyout((caddr_t)&linux_statfs_buf, (caddr_t)args->buf, + sizeof(struct linux_statfs_buf)); } |