Wire up the statx syscall to xfs_io.
xfs_io> help statx
statx [-O | -m mask][-FDLA] -- extended information about the currently open file
Display extended file status.
Options:
-m mask -- Specify the field mask for the statx call (default STATX_ALL)
-A -- Suppress terminal automount traversal
-D -- Don't sync attributes with the server
-F -- Force the attributes to be sync'd with the server
-L -- Follow symlinks (statx link target)
-O -- Add only basic stats (STATX_BASIC_STATS) to default mask
Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
---
V2: Fix dumb typos, add usage for bad options, change the -O meaning,
remove pretty print code, move all compat #defines to statx.h
diff --git a/io/init.c b/io/init.c
index 06002e6..c15a1e1 100644
--- a/io/init.c
+++ b/io/init.c
@@ -86,6 +86,7 @@ init_commands(void)
seek_init();
sendfile_init();
shutdown_init();
+ stat_init();
sync_init();
sync_range_init();
truncate_init();
diff --git a/io/io.h b/io/io.h
index 7e95bd5..952bdb8 100644
--- a/io/io.h
+++ b/io/io.h
@@ -112,6 +112,7 @@ extern void pwrite_init(void);
extern void quit_init(void);
extern void seek_init(void);
extern void shutdown_init(void);
+extern void stat_init(void);
extern void sync_init(void);
extern void truncate_init(void);
extern void utimes_init(void);
diff --git a/io/stat.c b/io/stat.c
index 3ae9903..a7aebcd 100644
--- a/io/stat.c
+++ b/io/stat.c
@@ -2,6 +2,9 @@
* Copyright (c) 2003-2005 Silicon Graphics, Inc.
* All Rights Reserved.
*
+ * Copyright (C) 2015, 2017 Red Hat, Inc.
+ * Portions of statx support written by David Howells (dhowells@xxxxxxxxxx)
+ *
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
@@ -20,10 +23,14 @@
#include "input.h"
#include "init.h"
#include "io.h"
+#include "statx.h"
#include "libxfs.h"
+#include <fcntl.h>
+
static cmdinfo_t stat_cmd;
static cmdinfo_t statfs_cmd;
+static cmdinfo_t statx_cmd;
off64_t
filesize(void)
@@ -167,6 +174,125 @@ statfs_f(
return 0;
}
+static ssize_t
+statx(int dfd, const char *filename, unsigned flags,
+ unsigned int mask, struct statx *buffer)
+{
+ return syscall(__NR_statx, dfd, filename, flags, mask, buffer);
+}
+
+static void
+statx_help(void)
+{
+ printf(_(
+"\n"
+" Display extended file status.\n"
+"\n"
+" Options:\n"
+" -m mask -- Specify the field mask for the statx call (default STATX_ALL)\n"
+" -A -- Suppress terminal automount traversal\n"
+" -D -- Don't sync attributes with the server\n"
+" -F -- Force the attributes to be sync'd with the server\n"
+" -L -- Follow symlinks (statx link target)\n"
+" -O -- Add only basic stats (STATX_BASIC_STATS) to default mask\n"
+"\n"));
+}
+
+/* statx helper */
+static void
+dump_statx(struct statx *stx)
+{
+ printf("stx_mask: 0x%x\n", stx->stx_mask);
+ printf("stx_blksize: %u\n", stx->stx_blksize);
+ printf("stx_attributes: 0x%llx\n", stx->stx_attributes);
+ printf("stx_nlink: %u\n", stx->stx_nlink);
+ printf("stx_uid: %u\n", stx->stx_uid);
+ printf("stx_gid: %u\n", stx->stx_gid);
+ printf("stx_mode: 0%o\n", stx->stx_mode);
+ printf("stx_ino: %llu\n", stx->stx_ino);
+ printf("stx_size: %llu\n", stx->stx_size);
+ printf("stx_blocks: %llu\n", stx->stx_blocks);
+ printf("stx_atime.tv_sec: %lld\n", stx->stx_atime.tv_sec);
+ printf("stx_atime.tv_nsec: %d\n", stx->stx_atime.tv_nsec);
+ printf("stx_btime.tv_sec: %lld\n", stx->stx_btime.tv_sec);
+ printf("stx_btime.tv_nsec: %d\n", stx->stx_btime.tv_nsec);
+ printf("stx_ctime.tv_sec: %lld\n", stx->stx_ctime.tv_sec);
+ printf("stx_ctime.tv_nsec: %d\n", stx->stx_ctime.tv_nsec);
+ printf("stx_mtime.tv_sec: %lld\n", stx->stx_mtime.tv_sec);
+ printf("stx_mtime.tv_nsec: %d\n", stx->stx_mtime.tv_nsec);
+ printf("stx_rdev_major: %u\n", stx->stx_rdev_major);
+ printf("stx_rdev_minor: %u\n", stx->stx_rdev_minor);
+ printf("stx_dev_major: %u\n", stx->stx_dev_major);
+ printf("stx_dev_minor: %u\n", stx->stx_dev_minor);
+}
+
+/*
+ * options:
+ * - input flags - query type
+ * - output style for flags (and all else?) (chars vs. hex?)
+ * - output - mask out incidental flag or not?
+ */
+int
+statx_f(
+ int argc,
+ char **argv)
+{
+ int c;
+ struct statx stx;
+ int atflag = AT_SYMLINK_NOFOLLOW;
+ unsigned int m_mask = 0; /* mask requested with -m */
+ int Oflag = 0, mflag = 0; /* -O or -m was used */
+ unsigned int mask = STATX_ALL;
+
+ while ((c = getopt(argc, argv, "m:FDLOA")) != EOF) {
+ switch (c) {
+ case 'm':
+ m_mask = atoi(optarg);
+ mflag = 1;
+ break;
+ case 'F':
+ atflag &= ~AT_STATX_SYNC_TYPE;
+ atflag |= AT_STATX_FORCE_SYNC;
+ break;
+ case 'D':
+ atflag &= ~AT_STATX_SYNC_TYPE;
+ atflag |= AT_STATX_DONT_SYNC;
+ break;
+ case 'L':
+ atflag &= ~AT_SYMLINK_NOFOLLOW;
+ break;
+ case 'O':
+ mask = STATX_BASIC_STATS;
+ Oflag = 1;
+ break;
+ case 'A':
+ atflag |= AT_NO_AUTOMOUNT;
+ break;
+ default:
+ return command_usage(&statx_cmd);
+ }
+ }
+
+ if (Oflag && mflag) {
+ printf("Cannot specify both -m mask and -O\n");
+ return 0;
+ }
+
+ /* -m overrides any other mask options */
+ if (mflag)
+ mask = m_mask;
+
+ memset(&stx, 0xbf, sizeof(stx));
+ if (statx(AT_FDCWD, file->name, atflag, mask, &stx) < 0) {
+ perror("statx");
+ return 0;
+ }
+
+ dump_statx(&stx);
+
+ return 0;
+}
+
void
stat_init(void)
{
@@ -176,14 +302,25 @@ stat_init(void)
stat_cmd.argmax = 1;
stat_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK;
stat_cmd.args = _("[-v]");
- stat_cmd.oneline = _("statistics on the currently open file");
+ stat_cmd.oneline = _("information about the currently open file");
statfs_cmd.name = "statfs";
statfs_cmd.cfunc = statfs_f;
statfs_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK;
statfs_cmd.oneline =
- _("statistics on the filesystem of the currently open file");
+ _("information about the filesystem of the currently open file");
+
+ statx_cmd.name = "statx";
+ statx_cmd.cfunc = statx_f;
+ statx_cmd.argmin = 0;
+ statx_cmd.argmax = -1;
+ statx_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK;
+ statx_cmd.args = _("[-O | -m mask][-FDLAP]");
+ statx_cmd.oneline =
+ _("extended information about the currently open file");
+ statx_cmd.help = statx_help;
add_command(&stat_cmd);
add_command(&statfs_cmd);
+ add_command(&statx_cmd);
}
diff --git a/io/statx.h b/io/statx.h
new file mode 100644
index 0000000..729a147
--- /dev/null
+++ b/io/statx.h
@@ -0,0 +1,158 @@
+#ifndef XFS_IO_STATX_H
+#define XFS_IO_STATX_H
+
+#include <unistd.h>
+
+#ifndef AT_STATX_SYNC_TYPE
+#define AT_STATX_SYNC_TYPE 0x6000 /* Type of synchronisation required from statx() */
+#define AT_STATX_SYNC_AS_STAT 0x0000 /* - Do whatever stat() does */
+#define AT_STATX_FORCE_SYNC 0x2000 /* - Force the attributes to be sync'd with the server */
+#define AT_STATX_DONT_SYNC 0x4000 /* - Don't sync attributes with the server */
+#endif
+
+#ifndef AT_NO_AUTOMOUNT
+#define AT_NO_AUTOMOUNT 0x800 /* Suppress terminal automount traversal */
+#endif
+
+#ifdef __i386__
+#define __NR_statx 383
+#elif defined (__ILP32__)
+#define __NR_statx (__X32_SYSCALL_BIT + 332)
+#else
+#define __NR_statx 332
+#endif
+
+#ifndef STATX_TYPE
+
+/*
+ * Timestamp structure for the timestamps in struct statx.
+ *
+ * tv_sec holds the number of seconds before (negative) or after (positive)
+ * 00:00:00 1st January 1970 UTC.
+ *
+ * tv_nsec holds a number of nanoseconds before (0..-999,999,999 if tv_sec is
+ * negative) or after (0..999,999,999 if tv_sec is positive) the tv_sec time.
+ *
+ * Note that if both tv_sec and tv_nsec are non-zero, then the two values must
+ * either be both positive or both negative.
+ *
+ * __reserved is held in case we need a yet finer resolution.
+ */
+struct statx_timestamp {
+ __s64 tv_sec;
+ __s32 tv_nsec;
+ __s32 __reserved;
+};
+
+/*
+ * Structures for the extended file attribute retrieval system call
+ * (statx()).
+ *
+ * The caller passes a mask of what they're specifically interested in as a
+ * parameter to statx(). What statx() actually got will be indicated in
+ * st_mask upon return.
+ *
+ * For each bit in the mask argument:
+ *
+ * - if the datum is not supported:
+ *
+ * - the bit will be cleared, and
+ *
+ * - the datum will be set to an appropriate fabricated value if one is
+ * available (eg. CIFS can take a default uid and gid), otherwise
+ *
+ * - the field will be cleared;
+ *
+ * - otherwise, if explicitly requested:
+ *
+ * - the datum will be synchronised to the server if AT_STATX_FORCE_SYNC is
+ * set or if the datum is considered out of date, and
+ *
+ * - the field will be filled in and the bit will be set;
+ *
+ * - otherwise, if not requested, but available in approximate form without any
+ * effort, it will be filled in anyway, and the bit will be set upon return
+ * (it might not be up to date, however, and no attempt will be made to
+ * synchronise the internal state first);
+ *
+ * - otherwise the field and the bit will be cleared before returning.
+ *
+ * Items in STATX_BASIC_STATS may be marked unavailable on return, but they
+ * will have values installed for compatibility purposes so that stat() and
+ * co. can be emulated in userspace.
+ */
+struct statx {
+ /* 0x00 */
+ __u32 stx_mask; /* What results were written [uncond] */
+ __u32 stx_blksize; /* Preferred general I/O size [uncond] */
+ __u64 stx_attributes; /* Flags conveying information about the file [uncond] */
+ /* 0x10 */
+ __u32 stx_nlink; /* Number of hard links */
+ __u32 stx_uid; /* User ID of owner */
+ __u32 stx_gid; /* Group ID of owner */
+ __u16 stx_mode; /* File mode */
+ __u16 __spare0[1];
+ /* 0x20 */
+ __u64 stx_ino; /* Inode number */
+ __u64 stx_size; /* File size */
+ __u64 stx_blocks; /* Number of 512-byte blocks allocated */
+ __u64 __spare1[1];
+ /* 0x40 */
+ struct statx_timestamp stx_atime; /* Last access time */
+ struct statx_timestamp stx_btime; /* File creation time */
+ struct statx_timestamp stx_ctime; /* Last attribute change time */
+ struct statx_timestamp stx_mtime; /* Last data modification time */
+ /* 0x80 */
+ __u32 stx_rdev_major; /* Device ID of special file [if bdev/cdev] */
+ __u32 stx_rdev_minor;
+ __u32 stx_dev_major; /* ID of device containing file [uncond] */
+ __u32 stx_dev_minor;
+ /* 0x90 */
+ __u64 __spare2[14]; /* Spare space for future expansion */
+ /* 0x100 */
+};
+
+/*
+ * Flags to be stx_mask
+ *
+ * Query request/result mask for statx() and struct statx::stx_mask.
+ *
+ * These bits should be set in the mask argument of statx() to request
+ * particular items when calling statx().
+ */
+#define STATX_TYPE 0x00000001U /* Want/got stx_mode & S_IFMT */
+#define STATX_MODE 0x00000002U /* Want/got stx_mode & ~S_IFMT */
+#define STATX_NLINK 0x00000004U /* Want/got stx_nlink */
+#define STATX_UID 0x00000008U /* Want/got stx_uid */
+#define STATX_GID 0x00000010U /* Want/got stx_gid */
+#define STATX_ATIME 0x00000020U /* Want/got stx_atime */
+#define STATX_MTIME 0x00000040U /* Want/got stx_mtime */
+#define STATX_CTIME 0x00000080U /* Want/got stx_ctime */
+#define STATX_INO 0x00000100U /* Want/got stx_ino */
+#define STATX_SIZE 0x00000200U /* Want/got stx_size */
+#define STATX_BLOCKS 0x00000400U /* Want/got stx_blocks */
+#define STATX_BASIC_STATS 0x000007ffU /* The stuff in the normal stat struct */
+#define STATX_BTIME 0x00000800U /* Want/got stx_btime */
+#define STATX_ALL 0x00000fffU /* All currently supported flags */
+
+/*
+ * Attributes to be found in stx_attributes
+ *
+ * These give information about the features or the state of a file that might
+ * be of use to ordinary userspace programs such as GUIs or ls rather than
+ * specialised tools.
+ *
+ * Note that the flags marked [I] correspond to generic FS_IOC_FLAGS
+ * semantically. Where possible, the numerical value is picked to correspond
+ * also.
+ */
+#define STATX_ATTR_COMPRESSED 0x00000004 /* [I] File is compressed by the fs */
+#define STATX_ATTR_IMMUTABLE 0x00000010 /* [I] File is marked immutable */
+#define STATX_ATTR_APPEND 0x00000020 /* [I] File is append-only */
+#define STATX_ATTR_NODUMP 0x00000040 /* [I] File is not to be dumped */
+#define STATX_ATTR_ENCRYPTED 0x00000800 /* [I] File requires key to decrypt in fs */
+
+#define STATX_ATTR_AUTOMOUNT 0x00001000 /* Dir: Automount trigger */
+
+#endif /* STATX_TYPE */
+#endif /* XFS_IO_STATX_H */
diff --git a/man/man8/xfs_io.8 b/man/man8/xfs_io.8
index 19e1ae4..022f0ea 100644
--- a/man/man8/xfs_io.8
+++ b/man/man8/xfs_io.8
@@ -880,6 +880,32 @@ and the XFS_IOC_GETXATTR system call on the current file. If the
option is specified, the atime (last access), mtime
(last modify), and ctime (last change) timestamps are also displayed.
.TP
+.BR statx " [ " \-O " | " "\-m mask" " ][ \-" FDLA " ]"
+Extended information from the statx syscall.
+.RS 1.0i
+.PD 0
+.TP 0.4i
+.B \-m mask
+Specify the field mask for the statx call (default STATX_ALL)
+.TP
+.B \-O
+Add only basic stats (STATX_BASIC_STATS) to default mask
+.TP
+.B \-F
+Force the attributes to be sync'd with the server
+.TP
+.B \-D
+Don't sync attributes with the server
+.TP
+.B \-L
+Follow symlinks (statx link target)
+.TP
+.B \-A
+Suppress terminal automount traversal
+.TP
+.RE
+.IP
+.TP
.B statfs
Selected statistics from
.BR statfs (2)
