@@ -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@redhat.com)
+ *
* 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)
@@ -226,6 +233,146 @@ 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"
+" -v -- More verbose output\n"
+" -r -- Print raw statx structure fields\n"
+" -m mask -- Specify the field mask for the statx call\n"
+" (can also be 'basic' or 'all'; default STATX_ALL)\n"
+" -D -- Don't sync attributes with the server\n"
+" -F -- Force the attributes to be sync'd with the server\n"
+"\n"));
+}
+
+/* statx helper */
+static int
+dump_raw_statx(struct statx *stx)
+{
+ printf("stat.mask = 0x%x\n", stx->stx_mask);
+ printf("stat.blksize = %u\n", stx->stx_blksize);
+ printf("stat.attributes = 0x%llx\n", stx->stx_attributes);
+ printf("stat.nlink = %u\n", stx->stx_nlink);
+ printf("stat.uid = %u\n", stx->stx_uid);
+ printf("stat.gid = %u\n", stx->stx_gid);
+ printf("stat.mode: 0%o\n", stx->stx_mode);
+ printf("stat.ino = %llu\n", stx->stx_ino);
+ printf("stat.size = %llu\n", stx->stx_size);
+ printf("stat.blocks = %llu\n", stx->stx_blocks);
+ printf("stat.atime.tv_sec = %lld\n", stx->stx_atime.tv_sec);
+ printf("stat.atime.tv_nsec = %d\n", stx->stx_atime.tv_nsec);
+ printf("stat.btime.tv_sec = %lld\n", stx->stx_btime.tv_sec);
+ printf("stat.btime.tv_nsec = %d\n", stx->stx_btime.tv_nsec);
+ printf("stat.ctime.tv_sec = %lld\n", stx->stx_ctime.tv_sec);
+ printf("stat.ctime.tv_nsec = %d\n", stx->stx_ctime.tv_nsec);
+ printf("stat.mtime.tv_sec = %lld\n", stx->stx_mtime.tv_sec);
+ printf("stat.mtime.tv_nsec = %d\n", stx->stx_mtime.tv_nsec);
+ printf("stat.rdev_major = %u\n", stx->stx_rdev_major);
+ printf("stat.rdev_minor = %u\n", stx->stx_rdev_minor);
+ printf("stat.dev_major = %u\n", stx->stx_dev_major);
+ printf("stat.dev_minor = %u\n", stx->stx_dev_minor);
+ return 0;
+}
+
+/*
+ * 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, verbose = 0, raw = 0;
+ char *p;
+ struct statx stx;
+ int atflag = 0;
+ unsigned int mask = STATX_ALL;
+
+ while ((c = getopt(argc, argv, "m:rvFD")) != EOF) {
+ switch (c) {
+ case 'm':
+ if (strcmp(optarg, "basic") == 0)
+ mask = STATX_BASIC_STATS;
+ else if (strcmp(optarg, "all") == 0)
+ mask = STATX_ALL;
+ else {
+ mask = strtoul(optarg, &p, 0);
+ if (!p || p == optarg) {
+ printf(
+ _("non-numeric mask -- %s\n"), optarg);
+ return 0;
+ }
+ }
+ break;
+ case 'r':
+ raw = 1;
+ break;
+ case 'v':
+ verbose = 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;
+ default:
+ return command_usage(&statx_cmd);
+ }
+ }
+
+ if (raw && verbose)
+ return command_usage(&statx_cmd);
+
+ memset(&stx, 0xbf, sizeof(stx));
+ if (_statx(file->fd, NULL, atflag, mask, &stx) < 0) {
+ perror("statx");
+ return 0;
+ }
+
+ if (raw)
+ return dump_raw_statx(&stx);
+
+ print_file_info();
+
+ printf(_("stat.ino = %lld\n"), (long long)stx.stx_ino);
+ printf(_("stat.type = %s\n"), filetype(stx.stx_mode));
+ printf(_("stat.size = %lld\n"), (long long)stx.stx_size);
+ printf(_("stat.blocks = %lld\n"), (long long)stx.stx_blocks);
+ if (verbose) {
+ printf(_("stat.atime = %s"), ctime((time_t *)&stx.stx_atime.tv_sec));
+ printf(_("stat.mtime = %s"), ctime((time_t *)&stx.stx_mtime.tv_sec));
+ printf(_("stat.ctime = %s"), ctime((time_t *)&stx.stx_ctime.tv_sec));
+ if (stx.stx_mask & STATX_BTIME)
+ printf(_("stat.btime = %s"),
+ ctime((time_t *)&stx.stx_btime.tv_sec));
+ }
+
+ if (file->flags & IO_FOREIGN)
+ return 0;
+
+ print_xfs_info(verbose);
+
+ return 0;
+}
+
void
stat_init(void)
{
@@ -237,6 +384,15 @@ stat_init(void)
stat_cmd.args = _("[-v|-r]");
stat_cmd.oneline = _("statistics on 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 = _("[-v|-r][-m basic | -m all | -m <mask>][-FD]");
+ statx_cmd.oneline = _("extended statistics on the currently open file");
+ statx_cmd.help = statx_help;
+
statfs_cmd.name = "statfs";
statfs_cmd.cfunc = statfs_f;
statfs_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK;
@@ -244,5 +400,6 @@ stat_init(void)
_("statistics on the filesystem of the currently open file");
add_command(&stat_cmd);
+ add_command(&statx_cmd);
add_command(&statfs_cmd);
}
new file mode 100644
@@ -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 */
@@ -882,6 +882,36 @@ option is specified, the atime (last access), mtime
.B \-r
option dumps raw fields from the stat structure.
.TP
+.BI "statx [ \-v|\-r ][ \-m " basic " | \-m " all " | -m " <mask> " ][ \-FD ]"
+Selected statistics from
+.BR stat (2)
+and the XFS_IOC_GETXATTR system call on the current file.
+.RS 1.0i
+.PD 0
+.TP 0.4i
+.B \-v
+Show timestamps
+.TP
+.B \-r
+Dump raw statx structure values
+.TP
+.B \-m basic
+Set the field mask for the statx call to STATX_BASIC_STATS
+.TP
+.B \-m all
+Set the the field mask for the statx call to STATX_ALL (default)
+.TP
+.B \-m <mask>
+Specify a numeric field mask for the statx call
+.TP
+.B \-F
+Force the attributes to be synced with the server
+.TP
+.B \-D
+Don't sync attributes with the server
+.PD
+.RE
+.TP
.B statfs
Selected statistics from
.BR statfs (2)
Wire up the statx syscall to xfs_io. xfs_io> help statx statx [-v|-r][-m basic | -m all | -m <mask>][-FD] -- extended statistics on the currently open file Display extended file status. Options: -v -- More verbose output -r -- Print raw statx structure fields -m mask -- Specify the field mask for the statx call (can also be 'basic' or 'all'; default STATX_ALL) -D -- Don't sync attributes with the server -F -- Force the attributes to be sync'd with the server Signed-off-by: Eric Sandeen <sandeen@redhat.com> --- V3: remove -A, -L, and -O options allow "basic" and "all" masks change raw dump format to match stat raw format make -r and -v exclusive follow factoring of stat_f() -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html