Date: Sun, 3 Jun 2007 10:48:31 GMT From: Roman Divacky <rdivacky@FreeBSD.org> To: Perforce Change Reviews <perforce@FreeBSD.org> Subject: PERFORCE change 120827 for review Message-ID: <200706031048.l53AmVGJ010086@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=120827 Change 120827 by rdivacky@rdivacky_witten on 2007/06/03 10:48:09 Implement kern_statat. Not tested at all yet. Suggested by: rwatson Affected files ... .. //depot/projects/soc2007/rdivacky/linux_at/sys/kern/vfs_syscalls.c#5 edit Differences ... ==== //depot/projects/soc2007/rdivacky/linux_at/sys/kern/vfs_syscalls.c#5 (text+ko) ==== @@ -91,6 +91,8 @@ int flags, int mode, struct nameidata *nd); static int kern_common_access(struct thread *td, char *path, enum uio_seg pathseg, int flags, struct nameidata *nd); +static int kern_common_stat(struct thread *td, struct stat *sbp, + struct nameidata *nd); /* * The module initialization routine for POSIX asynchronous I/O will @@ -2132,18 +2134,53 @@ kern_stat(struct thread *td, char *path, enum uio_seg pathseg, struct stat *sbp) { struct nameidata nd; - struct stat sb; - int error, vfslocked; - + NDINIT(&nd, LOOKUP, FOLLOW | LOCKSHARED | LOCKLEAF | MPSAFE | AUDITVNODE1, pathseg, path, td); if ((error = namei(&nd)) != 0) return (error); + + return kern_common_stat(td, sbp, nd); +} + +int +kern_statat(struct thread *td, char *path, enum uio_seg pathseg, struct stat *sbp, int dfd) +{ + int error; + struct nameidata nd; + struct vnode *dir_vn; + + if (dirfd == AT_FDCWD) + dir_vn = NULL; + else { + error = fgetvp(td, dirfd, &dir_vn); + if (error) + return (error); + if (dir_vn->v_type != VDIR) { + vrele(dir_vn); + return (ENOTDIR); + } + } + + NDINIT_AT(&nd, LOOKUP, FOLLOW | AUDITVNODE1 | MPSAFE, pathseg, path, td, dir_vn); + + error = kern_common_stat(td, sbp, &nd); + if (dirfd != AT_FDCWD) + vrele(dir_vn); + return (error); +} + +static int +kern_common_stat(struct thread *td, struct stat *sbp, struct nameidata *nd) +{ + struct stat sb; + int error, vfslocked; + vfslocked = NDHASGIANT(&nd); - error = vn_stat(nd.ni_vp, &sb, td->td_ucred, NOCRED, td); + error = vn_stat(nd->ni_vp, &sb, td->td_ucred, NOCRED, td); NDFREE(&nd, NDF_ONLY_PNBUF); - vput(nd.ni_vp); + vput(nd->ni_vp); VFS_UNLOCK_GIANT(vfslocked); if (mtx_owned(&Giant)) printf("stat(%d): %s\n", vfslocked, path); @@ -2152,7 +2189,6 @@ *sbp = sb; return (0); } - /* * Get file status; this version does not follow links. */
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