From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752931AbaG2IVX (ORCPT ); Tue, 29 Jul 2014 04:21:23 -0400 Received: from mail-oi0-f52.google.com ([209.85.218.52]:56978 "EHLO mail-oi0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751430AbaG2IVU (ORCPT ); Tue, 29 Jul 2014 04:21:20 -0400 MIME-Version: 1.0 In-Reply-To: <1406309888-10749-3-git-send-email-adas@redhat.com> References: <1406309888-10749-1-git-send-email-adas@redhat.com> <1406309888-10749-3-git-send-email-adas@redhat.com> From: Michael Kerrisk Date: Tue, 29 Jul 2014 10:20:59 +0200 X-Google-Sender-Auth: 9Dj-rRr5V30aD6aC_TdTcxRfOt4 Message-ID: Subject: Re: [RFC PATCH 2/5] fs: Add xgetdents system call and xreaddir file operation To: Abhi Das Cc: Linux Kernel , Linux-Fsdevel , cluster-devel@redhat.com, Linux API Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [CC += linux-api] On Fri, Jul 25, 2014 at 7:38 PM, Abhi Das wrote: > Also add linux_xdirent structure that will be the container for > dirent, stat and xattr info. > > Signed-off-by: Abhi Das > --- > arch/x86/syscalls/syscall_32.tbl | 1 + > arch/x86/syscalls/syscall_64.tbl | 1 + > fs/readdir.c | 42 ++++++++++++++++++++++++++++++++++++++++ > fs/stat.c | 4 +++- > include/linux/fs.h | 1 + > include/linux/stat.h | 2 ++ > include/uapi/linux/stat.h | 33 +++++++++++++++++++++++++++++++ > 7 files changed, 83 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/syscalls/syscall_32.tbl b/arch/x86/syscalls/syscall_32.tbl > index 6d6ca37..35723e3 100644 > --- a/arch/x86/syscalls/syscall_32.tbl > +++ b/arch/x86/syscalls/syscall_32.tbl > @@ -362,3 +362,4 @@ > 353 i386 renameat2 sys_renameat2 > 354 i386 xstat sys_xstat > 355 i386 fxstat sys_fxstat > +356 i386 xgetdents sys_xgetdents > diff --git a/arch/x86/syscalls/syscall_64.tbl b/arch/x86/syscalls/syscall_64.tbl > index 1308ee3..566aab1 100644 > --- a/arch/x86/syscalls/syscall_64.tbl > +++ b/arch/x86/syscalls/syscall_64.tbl > @@ -325,6 +325,7 @@ > 316 common renameat2 sys_renameat2 > 317 common xstat sys_xstat > 318 common fxstat sys_fxstat > +319 common xgetdents sys_xgetdents > > # > # x32-specific system call numbers start at 512 to avoid cache impact > diff --git a/fs/readdir.c b/fs/readdir.c > index 33fd922..d676088 100644 > --- a/fs/readdir.c > +++ b/fs/readdir.c > @@ -224,6 +224,48 @@ SYSCALL_DEFINE3(getdents, unsigned int, fd, > return error; > } > > +SYSCALL_DEFINE5(xgetdents, unsigned int, fd, unsigned, flags, unsigned int, mask, > + void __user *, buf, unsigned int, count) > +{ > + struct fd f; > + struct inode *inode; > + int error = -ENOTDIR; > + > + if (!count) > + return -EINVAL; > + > + if (!access_ok(VERIFY_WRITE, buf, count)) > + return -EFAULT; > + > + f = fdget(fd); > + if (!f.file) > + return -EBADF; > + > + inode = f.file->f_path.dentry->d_inode; > + > + error = -ENOTSUPP; > + if (!f.file->f_op || !f.file->f_op->xreaddir) > + goto out; > + > + error = security_file_permission(f.file, MAY_READ); > + if (error) > + goto out; > + > + error = mutex_lock_killable(&inode->i_mutex); > + if (error) > + goto out; > + > + error = -ENOENT; > + if (!IS_DEADDIR(inode)) { > + error = f.file->f_op->xreaddir(f.file, flags, mask, buf, count); > + file_accessed(f.file); > + } > + mutex_unlock(&inode->i_mutex); > +out: > + fdput(f); > + return error; > +} > + > struct getdents_callback64 { > struct dir_context ctx; > struct linux_dirent64 __user * current_dir; > diff --git a/fs/stat.c b/fs/stat.c > index 1fd0b3e..db45f8b 100644 > --- a/fs/stat.c > +++ b/fs/stat.c > @@ -651,7 +651,7 @@ static int xstat_get_params(unsigned int mask, struct xstat __user *buffer, > * Otherwise we copy the extended stats to userspace and return the amount of > * data written into the buffer (or -EFAULT). > */ > -static long xstat_set_result(struct kstat *stat, struct xstat __user *buffer) > +long xstat_set_result(struct kstat *stat, struct xstat __user *buffer) > { > u32 mask = stat->result_mask, gran = stat->tv_granularity; > > @@ -701,6 +701,8 @@ static long xstat_set_result(struct kstat *stat, struct xstat __user *buffer) > return 0; > } > > +EXPORT_SYMBOL(xstat_set_result); > + > /* > * System call to get extended stats by path > */ > diff --git a/include/linux/fs.h b/include/linux/fs.h > index b91f235..79c7d39 100644 > --- a/include/linux/fs.h > +++ b/include/linux/fs.h > @@ -1464,6 +1464,7 @@ struct file_operations { > ssize_t (*read_iter) (struct kiocb *, struct iov_iter *); > ssize_t (*write_iter) (struct kiocb *, struct iov_iter *); > int (*iterate) (struct file *, struct dir_context *); > + size_t (*xreaddir) (struct file *, unsigned int, unsigned int, void __user *, size_t); > unsigned int (*poll) (struct file *, struct poll_table_struct *); > long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long); > long (*compat_ioctl) (struct file *, unsigned int, unsigned long); > diff --git a/include/linux/stat.h b/include/linux/stat.h > index 552e047..75be415 100644 > --- a/include/linux/stat.h > +++ b/include/linux/stat.h > @@ -46,4 +46,6 @@ struct kstat { > unsigned char volume_id[16]; /* volume identifier */ > }; > > +long xstat_set_result(struct kstat *stat, struct xstat __user *buffer); > + > #endif > diff --git a/include/uapi/linux/stat.h b/include/uapi/linux/stat.h > index 2907352..d7ea6c5 100644 > --- a/include/uapi/linux/stat.h > +++ b/include/uapi/linux/stat.h > @@ -90,6 +90,14 @@ > #define XSTAT_VOLUME_ID 0x00008000U /* want/got st_volume_id */ > #define XSTAT_ALL_STATS 0x0000ffffU /* all supported stats */ > > +/* xattr request flags */ > +#define XSTAT_XATTR_USER 0x00010000U /* user.* xattrs */ > +#define XSTAT_XATTR_SYSTEM 0x00020000U /* system.* xattrs */ > +#define XSTAT_XATTR_SECURITY 0x00040000U /* security.* xattrs */ > +#define XSTAT_XATTR_POSIX_ACL 0x00080000U /* posix acl xattrs */ > +#define XSTAT_XATTR_ALL 0x00ff0000U /* all xattrs */ > +#define XSTAT_XATTR_VALUES 0x01000000U /* retrieve values along with keys */ > + > /* > * Extended stat structures > */ > @@ -152,4 +160,29 @@ struct xstat { > #define XSTAT_INFO_SYSTEM 0x00001000U /* File is marked system (DOS+) */ > #define XSTAT_INFO_ARCHIVE 0x00002000U /* File is marked archive (DOS+) */ > > +struct xdirent_xattr { > + size_t xa_value_len; /* length of value field */ > + char xa_name_val[1]; /* name/value pair, name is NULL terminated and > + * value is xa_value_len in length */ > +}; > + > +/* > + * xb_blob: first contains NULL terminated name, followed by struct xdirent_xattr > + * objects packed together. > + */ > +struct xdirent_blob { > + unsigned int xb_xattr_count; > + char xb_blob[1]; /* contains variable length data like > + * NULL-terminated name, xattrs etc */ > +}; > + > +struct linux_xdirent { > + unsigned long xd_ino; > + char xd_type; > + unsigned long xd_off; > + struct xstat xd_stat; > + unsigned long xd_reclen; > + struct xdirent_blob xd_blob; > +}; > + > #endif /* _UAPI_LINUX_STAT_H */ > -- > 1.8.1.4 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Author of "The Linux Programming Interface", http://blog.man7.org/ From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Kerrisk Subject: Re: [RFC PATCH 2/5] fs: Add xgetdents system call and xreaddir file operation Date: Tue, 29 Jul 2014 10:20:59 +0200 Message-ID: References: <1406309888-10749-1-git-send-email-adas@redhat.com> <1406309888-10749-3-git-send-email-adas@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Cc: Linux Kernel , Linux-Fsdevel , cluster-devel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, Linux API To: Abhi Das Return-path: In-Reply-To: <1406309888-10749-3-git-send-email-adas-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> Sender: linux-api-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-fsdevel.vger.kernel.org [CC += linux-api] On Fri, Jul 25, 2014 at 7:38 PM, Abhi Das wrote: > Also add linux_xdirent structure that will be the container for > dirent, stat and xattr info. > > Signed-off-by: Abhi Das > --- > arch/x86/syscalls/syscall_32.tbl | 1 + > arch/x86/syscalls/syscall_64.tbl | 1 + > fs/readdir.c | 42 ++++++++++++++++++++++++++++++++++++++++ > fs/stat.c | 4 +++- > include/linux/fs.h | 1 + > include/linux/stat.h | 2 ++ > include/uapi/linux/stat.h | 33 +++++++++++++++++++++++++++++++ > 7 files changed, 83 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/syscalls/syscall_32.tbl b/arch/x86/syscalls/syscall_32.tbl > index 6d6ca37..35723e3 100644 > --- a/arch/x86/syscalls/syscall_32.tbl > +++ b/arch/x86/syscalls/syscall_32.tbl > @@ -362,3 +362,4 @@ > 353 i386 renameat2 sys_renameat2 > 354 i386 xstat sys_xstat > 355 i386 fxstat sys_fxstat > +356 i386 xgetdents sys_xgetdents > diff --git a/arch/x86/syscalls/syscall_64.tbl b/arch/x86/syscalls/syscall_64.tbl > index 1308ee3..566aab1 100644 > --- a/arch/x86/syscalls/syscall_64.tbl > +++ b/arch/x86/syscalls/syscall_64.tbl > @@ -325,6 +325,7 @@ > 316 common renameat2 sys_renameat2 > 317 common xstat sys_xstat > 318 common fxstat sys_fxstat > +319 common xgetdents sys_xgetdents > > # > # x32-specific system call numbers start at 512 to avoid cache impact > diff --git a/fs/readdir.c b/fs/readdir.c > index 33fd922..d676088 100644 > --- a/fs/readdir.c > +++ b/fs/readdir.c > @@ -224,6 +224,48 @@ SYSCALL_DEFINE3(getdents, unsigned int, fd, > return error; > } > > +SYSCALL_DEFINE5(xgetdents, unsigned int, fd, unsigned, flags, unsigned int, mask, > + void __user *, buf, unsigned int, count) > +{ > + struct fd f; > + struct inode *inode; > + int error = -ENOTDIR; > + > + if (!count) > + return -EINVAL; > + > + if (!access_ok(VERIFY_WRITE, buf, count)) > + return -EFAULT; > + > + f = fdget(fd); > + if (!f.file) > + return -EBADF; > + > + inode = f.file->f_path.dentry->d_inode; > + > + error = -ENOTSUPP; > + if (!f.file->f_op || !f.file->f_op->xreaddir) > + goto out; > + > + error = security_file_permission(f.file, MAY_READ); > + if (error) > + goto out; > + > + error = mutex_lock_killable(&inode->i_mutex); > + if (error) > + goto out; > + > + error = -ENOENT; > + if (!IS_DEADDIR(inode)) { > + error = f.file->f_op->xreaddir(f.file, flags, mask, buf, count); > + file_accessed(f.file); > + } > + mutex_unlock(&inode->i_mutex); > +out: > + fdput(f); > + return error; > +} > + > struct getdents_callback64 { > struct dir_context ctx; > struct linux_dirent64 __user * current_dir; > diff --git a/fs/stat.c b/fs/stat.c > index 1fd0b3e..db45f8b 100644 > --- a/fs/stat.c > +++ b/fs/stat.c > @@ -651,7 +651,7 @@ static int xstat_get_params(unsigned int mask, struct xstat __user *buffer, > * Otherwise we copy the extended stats to userspace and return the amount of > * data written into the buffer (or -EFAULT). > */ > -static long xstat_set_result(struct kstat *stat, struct xstat __user *buffer) > +long xstat_set_result(struct kstat *stat, struct xstat __user *buffer) > { > u32 mask = stat->result_mask, gran = stat->tv_granularity; > > @@ -701,6 +701,8 @@ static long xstat_set_result(struct kstat *stat, struct xstat __user *buffer) > return 0; > } > > +EXPORT_SYMBOL(xstat_set_result); > + > /* > * System call to get extended stats by path > */ > diff --git a/include/linux/fs.h b/include/linux/fs.h > index b91f235..79c7d39 100644 > --- a/include/linux/fs.h > +++ b/include/linux/fs.h > @@ -1464,6 +1464,7 @@ struct file_operations { > ssize_t (*read_iter) (struct kiocb *, struct iov_iter *); > ssize_t (*write_iter) (struct kiocb *, struct iov_iter *); > int (*iterate) (struct file *, struct dir_context *); > + size_t (*xreaddir) (struct file *, unsigned int, unsigned int, void __user *, size_t); > unsigned int (*poll) (struct file *, struct poll_table_struct *); > long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long); > long (*compat_ioctl) (struct file *, unsigned int, unsigned long); > diff --git a/include/linux/stat.h b/include/linux/stat.h > index 552e047..75be415 100644 > --- a/include/linux/stat.h > +++ b/include/linux/stat.h > @@ -46,4 +46,6 @@ struct kstat { > unsigned char volume_id[16]; /* volume identifier */ > }; > > +long xstat_set_result(struct kstat *stat, struct xstat __user *buffer); > + > #endif > diff --git a/include/uapi/linux/stat.h b/include/uapi/linux/stat.h > index 2907352..d7ea6c5 100644 > --- a/include/uapi/linux/stat.h > +++ b/include/uapi/linux/stat.h > @@ -90,6 +90,14 @@ > #define XSTAT_VOLUME_ID 0x00008000U /* want/got st_volume_id */ > #define XSTAT_ALL_STATS 0x0000ffffU /* all supported stats */ > > +/* xattr request flags */ > +#define XSTAT_XATTR_USER 0x00010000U /* user.* xattrs */ > +#define XSTAT_XATTR_SYSTEM 0x00020000U /* system.* xattrs */ > +#define XSTAT_XATTR_SECURITY 0x00040000U /* security.* xattrs */ > +#define XSTAT_XATTR_POSIX_ACL 0x00080000U /* posix acl xattrs */ > +#define XSTAT_XATTR_ALL 0x00ff0000U /* all xattrs */ > +#define XSTAT_XATTR_VALUES 0x01000000U /* retrieve values along with keys */ > + > /* > * Extended stat structures > */ > @@ -152,4 +160,29 @@ struct xstat { > #define XSTAT_INFO_SYSTEM 0x00001000U /* File is marked system (DOS+) */ > #define XSTAT_INFO_ARCHIVE 0x00002000U /* File is marked archive (DOS+) */ > > +struct xdirent_xattr { > + size_t xa_value_len; /* length of value field */ > + char xa_name_val[1]; /* name/value pair, name is NULL terminated and > + * value is xa_value_len in length */ > +}; > + > +/* > + * xb_blob: first contains NULL terminated name, followed by struct xdirent_xattr > + * objects packed together. > + */ > +struct xdirent_blob { > + unsigned int xb_xattr_count; > + char xb_blob[1]; /* contains variable length data like > + * NULL-terminated name, xattrs etc */ > +}; > + > +struct linux_xdirent { > + unsigned long xd_ino; > + char xd_type; > + unsigned long xd_off; > + struct xstat xd_stat; > + unsigned long xd_reclen; > + struct xdirent_blob xd_blob; > +}; > + > #endif /* _UAPI_LINUX_STAT_H */ > -- > 1.8.1.4 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Author of "The Linux Programming Interface", http://blog.man7.org/ From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Kerrisk Date: Tue, 29 Jul 2014 10:20:59 +0200 Subject: [Cluster-devel] [RFC PATCH 2/5] fs: Add xgetdents system call and xreaddir file operation In-Reply-To: <1406309888-10749-3-git-send-email-adas@redhat.com> References: <1406309888-10749-1-git-send-email-adas@redhat.com> <1406309888-10749-3-git-send-email-adas@redhat.com> Message-ID: List-Id: To: cluster-devel.redhat.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit [CC += linux-api] On Fri, Jul 25, 2014 at 7:38 PM, Abhi Das wrote: > Also add linux_xdirent structure that will be the container for > dirent, stat and xattr info. > > Signed-off-by: Abhi Das > --- > arch/x86/syscalls/syscall_32.tbl | 1 + > arch/x86/syscalls/syscall_64.tbl | 1 + > fs/readdir.c | 42 ++++++++++++++++++++++++++++++++++++++++ > fs/stat.c | 4 +++- > include/linux/fs.h | 1 + > include/linux/stat.h | 2 ++ > include/uapi/linux/stat.h | 33 +++++++++++++++++++++++++++++++ > 7 files changed, 83 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/syscalls/syscall_32.tbl b/arch/x86/syscalls/syscall_32.tbl > index 6d6ca37..35723e3 100644 > --- a/arch/x86/syscalls/syscall_32.tbl > +++ b/arch/x86/syscalls/syscall_32.tbl > @@ -362,3 +362,4 @@ > 353 i386 renameat2 sys_renameat2 > 354 i386 xstat sys_xstat > 355 i386 fxstat sys_fxstat > +356 i386 xgetdents sys_xgetdents > diff --git a/arch/x86/syscalls/syscall_64.tbl b/arch/x86/syscalls/syscall_64.tbl > index 1308ee3..566aab1 100644 > --- a/arch/x86/syscalls/syscall_64.tbl > +++ b/arch/x86/syscalls/syscall_64.tbl > @@ -325,6 +325,7 @@ > 316 common renameat2 sys_renameat2 > 317 common xstat sys_xstat > 318 common fxstat sys_fxstat > +319 common xgetdents sys_xgetdents > > # > # x32-specific system call numbers start at 512 to avoid cache impact > diff --git a/fs/readdir.c b/fs/readdir.c > index 33fd922..d676088 100644 > --- a/fs/readdir.c > +++ b/fs/readdir.c > @@ -224,6 +224,48 @@ SYSCALL_DEFINE3(getdents, unsigned int, fd, > return error; > } > > +SYSCALL_DEFINE5(xgetdents, unsigned int, fd, unsigned, flags, unsigned int, mask, > + void __user *, buf, unsigned int, count) > +{ > + struct fd f; > + struct inode *inode; > + int error = -ENOTDIR; > + > + if (!count) > + return -EINVAL; > + > + if (!access_ok(VERIFY_WRITE, buf, count)) > + return -EFAULT; > + > + f = fdget(fd); > + if (!f.file) > + return -EBADF; > + > + inode = f.file->f_path.dentry->d_inode; > + > + error = -ENOTSUPP; > + if (!f.file->f_op || !f.file->f_op->xreaddir) > + goto out; > + > + error = security_file_permission(f.file, MAY_READ); > + if (error) > + goto out; > + > + error = mutex_lock_killable(&inode->i_mutex); > + if (error) > + goto out; > + > + error = -ENOENT; > + if (!IS_DEADDIR(inode)) { > + error = f.file->f_op->xreaddir(f.file, flags, mask, buf, count); > + file_accessed(f.file); > + } > + mutex_unlock(&inode->i_mutex); > +out: > + fdput(f); > + return error; > +} > + > struct getdents_callback64 { > struct dir_context ctx; > struct linux_dirent64 __user * current_dir; > diff --git a/fs/stat.c b/fs/stat.c > index 1fd0b3e..db45f8b 100644 > --- a/fs/stat.c > +++ b/fs/stat.c > @@ -651,7 +651,7 @@ static int xstat_get_params(unsigned int mask, struct xstat __user *buffer, > * Otherwise we copy the extended stats to userspace and return the amount of > * data written into the buffer (or -EFAULT). > */ > -static long xstat_set_result(struct kstat *stat, struct xstat __user *buffer) > +long xstat_set_result(struct kstat *stat, struct xstat __user *buffer) > { > u32 mask = stat->result_mask, gran = stat->tv_granularity; > > @@ -701,6 +701,8 @@ static long xstat_set_result(struct kstat *stat, struct xstat __user *buffer) > return 0; > } > > +EXPORT_SYMBOL(xstat_set_result); > + > /* > * System call to get extended stats by path > */ > diff --git a/include/linux/fs.h b/include/linux/fs.h > index b91f235..79c7d39 100644 > --- a/include/linux/fs.h > +++ b/include/linux/fs.h > @@ -1464,6 +1464,7 @@ struct file_operations { > ssize_t (*read_iter) (struct kiocb *, struct iov_iter *); > ssize_t (*write_iter) (struct kiocb *, struct iov_iter *); > int (*iterate) (struct file *, struct dir_context *); > + size_t (*xreaddir) (struct file *, unsigned int, unsigned int, void __user *, size_t); > unsigned int (*poll) (struct file *, struct poll_table_struct *); > long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long); > long (*compat_ioctl) (struct file *, unsigned int, unsigned long); > diff --git a/include/linux/stat.h b/include/linux/stat.h > index 552e047..75be415 100644 > --- a/include/linux/stat.h > +++ b/include/linux/stat.h > @@ -46,4 +46,6 @@ struct kstat { > unsigned char volume_id[16]; /* volume identifier */ > }; > > +long xstat_set_result(struct kstat *stat, struct xstat __user *buffer); > + > #endif > diff --git a/include/uapi/linux/stat.h b/include/uapi/linux/stat.h > index 2907352..d7ea6c5 100644 > --- a/include/uapi/linux/stat.h > +++ b/include/uapi/linux/stat.h > @@ -90,6 +90,14 @@ > #define XSTAT_VOLUME_ID 0x00008000U /* want/got st_volume_id */ > #define XSTAT_ALL_STATS 0x0000ffffU /* all supported stats */ > > +/* xattr request flags */ > +#define XSTAT_XATTR_USER 0x00010000U /* user.* xattrs */ > +#define XSTAT_XATTR_SYSTEM 0x00020000U /* system.* xattrs */ > +#define XSTAT_XATTR_SECURITY 0x00040000U /* security.* xattrs */ > +#define XSTAT_XATTR_POSIX_ACL 0x00080000U /* posix acl xattrs */ > +#define XSTAT_XATTR_ALL 0x00ff0000U /* all xattrs */ > +#define XSTAT_XATTR_VALUES 0x01000000U /* retrieve values along with keys */ > + > /* > * Extended stat structures > */ > @@ -152,4 +160,29 @@ struct xstat { > #define XSTAT_INFO_SYSTEM 0x00001000U /* File is marked system (DOS+) */ > #define XSTAT_INFO_ARCHIVE 0x00002000U /* File is marked archive (DOS+) */ > > +struct xdirent_xattr { > + size_t xa_value_len; /* length of value field */ > + char xa_name_val[1]; /* name/value pair, name is NULL terminated and > + * value is xa_value_len in length */ > +}; > + > +/* > + * xb_blob: first contains NULL terminated name, followed by struct xdirent_xattr > + * objects packed together. > + */ > +struct xdirent_blob { > + unsigned int xb_xattr_count; > + char xb_blob[1]; /* contains variable length data like > + * NULL-terminated name, xattrs etc */ > +}; > + > +struct linux_xdirent { > + unsigned long xd_ino; > + char xd_type; > + unsigned long xd_off; > + struct xstat xd_stat; > + unsigned long xd_reclen; > + struct xdirent_blob xd_blob; > +}; > + > #endif /* _UAPI_LINUX_STAT_H */ > -- > 1.8.1.4 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo at vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Author of "The Linux Programming Interface", http://blog.man7.org/