From 21875dd09002efad4dc0a3815a73b0debe31a067 Mon Sep 17 00:00:00 2001 From: Coleman Kane Date: Fri, 15 Sep 2023 00:36:39 -0400 Subject: [PATCH] Linux 6.6 compat: generic_fillattr has a new u32 request_mask added at arg2 In commit 0d72b92883c651a11059d93335f33d65c6eb653b, a new u32 argument for the request_mask was added to generic_fillattr. This is the same request_mask for statx that's present in the most recent API implemented by zpl_getattr_impl. This commit conditionally adds it to the zpl_generic_fillattr(...) macro, as well as the zfs_getattr_fast(...) implementation, when configure determines it's present in the kernel's generic_fillattr(...). Reviewed-by: Brian Behlendorf Signed-off-by: Coleman Kane Closes #15263 --- config/kernel-generic_fillattr.m4 | 39 +++++++++++++++++----- include/os/linux/kernel/linux/vfs_compat.h | 6 ++++ include/os/linux/zfs/sys/zfs_vnops_os.h | 5 +++ module/os/linux/zfs/zfs_vnops_os.c | 9 +++++ module/os/linux/zfs/zpl_ctldir.c | 11 +++++- module/os/linux/zfs/zpl_inode.c | 4 ++- 6 files changed, 63 insertions(+), 11 deletions(-) diff --git a/config/kernel-generic_fillattr.m4 b/config/kernel-generic_fillattr.m4 index 02dee4d4c000..f5323f0dcb9f 100644 --- a/config/kernel-generic_fillattr.m4 +++ b/config/kernel-generic_fillattr.m4 @@ -7,6 +7,10 @@ dnl # dnl # 6.3 API dnl # generic_fillattr() now takes struct mnt_idmap* as the first argument dnl # +dnl # 6.6 API +dnl # generic_fillattr() now takes u32 as second argument, representing a +dnl # request_mask for statx +dnl # AC_DEFUN([ZFS_AC_KERNEL_SRC_GENERIC_FILLATTR], [ ZFS_LINUX_TEST_SRC([generic_fillattr_userns], [ #include @@ -25,22 +29,39 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_GENERIC_FILLATTR], [ struct kstat *k = NULL; generic_fillattr(idmap, in, k); ]) + + ZFS_LINUX_TEST_SRC([generic_fillattr_mnt_idmap_reqmask], [ + #include + ],[ + struct mnt_idmap *idmap = NULL; + struct inode *in = NULL; + struct kstat *k = NULL; + generic_fillattr(idmap, 0, in, k); + ]) ]) AC_DEFUN([ZFS_AC_KERNEL_GENERIC_FILLATTR], [ - AC_MSG_CHECKING([whether generic_fillattr requires struct mnt_idmap*]) - ZFS_LINUX_TEST_RESULT([generic_fillattr_mnt_idmap], [ + AC_MSG_CHECKING( + [whether generic_fillattr requires struct mnt_idmap* and request_mask]) + ZFS_LINUX_TEST_RESULT([generic_fillattr_mnt_idmap_reqmask], [ AC_MSG_RESULT([yes]) - AC_DEFINE(HAVE_GENERIC_FILLATTR_IDMAP, 1, - [generic_fillattr requires struct mnt_idmap*]) + AC_DEFINE(HAVE_GENERIC_FILLATTR_IDMAP_REQMASK, 1, + [generic_fillattr requires struct mnt_idmap* and u32 request_mask]) ],[ - AC_MSG_CHECKING([whether generic_fillattr requires struct user_namespace*]) - ZFS_LINUX_TEST_RESULT([generic_fillattr_userns], [ + AC_MSG_CHECKING([whether generic_fillattr requires struct mnt_idmap*]) + ZFS_LINUX_TEST_RESULT([generic_fillattr_mnt_idmap], [ AC_MSG_RESULT([yes]) - AC_DEFINE(HAVE_GENERIC_FILLATTR_USERNS, 1, - [generic_fillattr requires struct user_namespace*]) + AC_DEFINE(HAVE_GENERIC_FILLATTR_IDMAP, 1, + [generic_fillattr requires struct mnt_idmap*]) ],[ - AC_MSG_RESULT([no]) + AC_MSG_CHECKING([whether generic_fillattr requires struct user_namespace*]) + ZFS_LINUX_TEST_RESULT([generic_fillattr_userns], [ + AC_MSG_RESULT([yes]) + AC_DEFINE(HAVE_GENERIC_FILLATTR_USERNS, 1, + [generic_fillattr requires struct user_namespace*]) + ],[ + AC_MSG_RESULT([no]) + ]) ]) ]) ]) diff --git a/include/os/linux/kernel/linux/vfs_compat.h b/include/os/linux/kernel/linux/vfs_compat.h index e156ed41c28c..aea8bd5ed22c 100644 --- a/include/os/linux/kernel/linux/vfs_compat.h +++ b/include/os/linux/kernel/linux/vfs_compat.h @@ -461,10 +461,16 @@ zpl_is_32bit_api(void) * 6.3 API change * generic_fillattr() first arg is changed to struct mnt_idmap * * + * 6.6 API change + * generic_fillattr() gets new second arg request_mask, a u32 type + * */ #ifdef HAVE_GENERIC_FILLATTR_IDMAP #define zpl_generic_fillattr(idmap, ip, sp) \ generic_fillattr(idmap, ip, sp) +#elif defined(HAVE_GENERIC_FILLATTR_IDMAP_REQMASK) +#define zpl_generic_fillattr(idmap, rqm, ip, sp) \ + generic_fillattr(idmap, rqm, ip, sp) #elif defined(HAVE_GENERIC_FILLATTR_USERNS) #define zpl_generic_fillattr(user_ns, ip, sp) \ generic_fillattr(user_ns, ip, sp) diff --git a/include/os/linux/zfs/sys/zfs_vnops_os.h b/include/os/linux/zfs/sys/zfs_vnops_os.h index 7a1db7deeec8..830c76e5743a 100644 --- a/include/os/linux/zfs/sys/zfs_vnops_os.h +++ b/include/os/linux/zfs/sys/zfs_vnops_os.h @@ -56,7 +56,12 @@ extern int zfs_mkdir(znode_t *dzp, char *dirname, vattr_t *vap, extern int zfs_rmdir(znode_t *dzp, char *name, znode_t *cwd, cred_t *cr, int flags); extern int zfs_readdir(struct inode *ip, zpl_dir_context_t *ctx, cred_t *cr); +#ifdef HAVE_GENERIC_FILLATTR_IDMAP_REQMASK +extern int zfs_getattr_fast(zidmap_t *, u32 request_mask, struct inode *ip, + struct kstat *sp); +#else extern int zfs_getattr_fast(zidmap_t *, struct inode *ip, struct kstat *sp); +#endif extern int zfs_setattr(znode_t *zp, vattr_t *vap, int flag, cred_t *cr, zidmap_t *mnt_ns); extern int zfs_rename(znode_t *sdzp, char *snm, znode_t *tdzp, diff --git a/module/os/linux/zfs/zfs_vnops_os.c b/module/os/linux/zfs/zfs_vnops_os.c index 03865661d315..d30290c69ebd 100644 --- a/module/os/linux/zfs/zfs_vnops_os.c +++ b/module/os/linux/zfs/zfs_vnops_os.c @@ -1652,7 +1652,12 @@ zfs_readdir(struct inode *ip, zpl_dir_context_t *ctx, cred_t *cr) * RETURN: 0 (always succeeds) */ int +#ifdef HAVE_GENERIC_FILLATTR_IDMAP_REQMASK +zfs_getattr_fast(zidmap_t *user_ns, u32 request_mask, struct inode *ip, + struct kstat *sp) +#else zfs_getattr_fast(zidmap_t *user_ns, struct inode *ip, struct kstat *sp) +#endif { znode_t *zp = ITOZ(ip); zfsvfs_t *zfsvfs = ITOZSB(ip); @@ -1665,7 +1670,11 @@ zfs_getattr_fast(zidmap_t *user_ns, struct inode *ip, struct kstat *sp) mutex_enter(&zp->z_lock); +#ifdef HAVE_GENERIC_FILLATTR_IDMAP_REQMASK + zpl_generic_fillattr(user_ns, request_mask, ip, sp); +#else zpl_generic_fillattr(user_ns, ip, sp); +#endif /* * +1 link count for root inode with visible '.zfs' directory. */ diff --git a/module/os/linux/zfs/zpl_ctldir.c b/module/os/linux/zfs/zpl_ctldir.c index 7786444fea35..8ee7fcecc7b7 100644 --- a/module/os/linux/zfs/zpl_ctldir.c +++ b/module/os/linux/zfs/zpl_ctldir.c @@ -124,6 +124,8 @@ zpl_root_getattr_impl(const struct path *path, struct kstat *stat, generic_fillattr(user_ns, ip, stat); #elif defined(HAVE_GENERIC_FILLATTR_IDMAP) generic_fillattr(user_ns, ip, stat); +#elif defined(HAVE_GENERIC_FILLATTR_IDMAP_REQMASK) + generic_fillattr(user_ns, request_mask, ip, stat); #else (void) user_ns; #endif @@ -435,6 +437,8 @@ zpl_snapdir_getattr_impl(const struct path *path, struct kstat *stat, generic_fillattr(user_ns, ip, stat); #elif defined(HAVE_GENERIC_FILLATTR_IDMAP) generic_fillattr(user_ns, ip, stat); +#elif defined(HAVE_GENERIC_FILLATTR_IDMAP_REQMASK) + generic_fillattr(user_ns, request_mask, ip, stat); #else (void) user_ns; #endif @@ -609,6 +613,8 @@ zpl_shares_getattr_impl(const struct path *path, struct kstat *stat, generic_fillattr(user_ns, path->dentry->d_inode, stat); #elif defined(HAVE_GENERIC_FILLATTR_IDMAP) generic_fillattr(user_ns, path->dentry->d_inode, stat); +#elif defined(HAVE_GENERIC_FILLATTR_IDMAP_REQMASK) + generic_fillattr(user_ns, request_mask, ip, stat); #else (void) user_ns; #endif @@ -623,7 +629,10 @@ zpl_shares_getattr_impl(const struct path *path, struct kstat *stat, error = -zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &dzp); if (error == 0) { -#if (defined(HAVE_USERNS_IOPS_GETATTR) || defined(HAVE_IDMAP_IOPS_GETATTR)) +#ifdef HAVE_GENERIC_FILLATTR_IDMAP_REQMASK + error = -zfs_getattr_fast(user_ns, request_mask, ZTOI(dzp), + stat); +#elif (defined(HAVE_USERNS_IOPS_GETATTR) || defined(HAVE_IDMAP_IOPS_GETATTR)) error = -zfs_getattr_fast(user_ns, ZTOI(dzp), stat); #else error = -zfs_getattr_fast(kcred->user_ns, ZTOI(dzp), stat); diff --git a/module/os/linux/zfs/zpl_inode.c b/module/os/linux/zfs/zpl_inode.c index ef50f8687779..96f65b9e94e2 100644 --- a/module/os/linux/zfs/zpl_inode.c +++ b/module/os/linux/zfs/zpl_inode.c @@ -435,7 +435,9 @@ zpl_getattr_impl(const struct path *path, struct kstat *stat, u32 request_mask, * XXX query_flags currently ignored. */ -#if (defined(HAVE_USERNS_IOPS_GETATTR) || defined(HAVE_IDMAP_IOPS_GETATTR)) +#ifdef HAVE_GENERIC_FILLATTR_IDMAP_REQMASK + error = -zfs_getattr_fast(user_ns, request_mask, ip, stat); +#elif (defined(HAVE_USERNS_IOPS_GETATTR) || defined(HAVE_IDMAP_IOPS_GETATTR)) error = -zfs_getattr_fast(user_ns, ip, stat); #else error = -zfs_getattr_fast(kcred->user_ns, ip, stat);