| Message ID | a96dd21a-2962-a667-75ff-1b5acec673e8@sandeen.net (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Mon, Apr 10, 2017 at 05:07:58PM -0500, Eric Sandeen wrote: > 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> > --- > > V5: address djwong's pedantry, except for mst3k ;) Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> --D > > V4: Fix up __NR_statx defines, handle it if not defined (ala dhowells testcase) > fix trailing whitespace in manpage > > 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() > > > diff --git a/io/stat.c b/io/stat.c > index 770f3c7..c5b3075 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@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 +233,155 @@ statfs_f( > return 0; > } > > +static ssize_t > +_statx( > + int dfd, > + const char *filename, > + unsigned int flags, > + unsigned int mask, > + struct statx *buffer) > +{ > +#ifdef __NR_statx > + return syscall(__NR_statx, dfd, filename, flags, mask, buffer); > +#else > + errno = ENOSYS; > + return -1; > +#endif > +} > + > +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 +393,15 @@ 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 +409,6 @@ stat_init(void) > _("statistics on the filesystem of the currently open file"); > > add_command(&stat_cmd); > + add_command(&statx_cmd); > add_command(&statfs_cmd); > } > diff --git a/io/statx.h b/io/statx.h > new file mode 100644 > index 0000000..ff08e27 > --- /dev/null > +++ b/io/statx.h > @@ -0,0 +1,162 @@ > +#ifndef XFS_IO_STATX_H > +#define XFS_IO_STATX_H > + > +#include <unistd.h> > +#include <sys/syscall.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 > + > +#ifndef __NR_statx > +# ifdef __i386__ > +# define __NR_statx 383 > +# elif defined (__ILP32__) > +# define __NR_statx (__X32_SYSCALL_BIT + 332) > +# elif defined (__x86_64__) > +# define __NR_statx 332 > +# endif > +#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 */ > +#define STATX__RESERVED 0x80000000U /* Reserved for future struct statx expansion */ > + > +/* > + * 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 e384327..b09a178 100644 > --- a/man/man8/xfs_io.8 > +++ b/man/man8/xfs_io.8 > @@ -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) > > -- > 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
diff --git a/io/stat.c b/io/stat.c index 770f3c7..c5b3075 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@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 +233,155 @@ statfs_f( return 0; } +static ssize_t +_statx( + int dfd, + const char *filename, + unsigned int flags, + unsigned int mask, + struct statx *buffer) +{ +#ifdef __NR_statx + return syscall(__NR_statx, dfd, filename, flags, mask, buffer); +#else + errno = ENOSYS; + return -1; +#endif +} + +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 +393,15 @@ 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 +409,6 @@ stat_init(void) _("statistics on the filesystem of the currently open file"); add_command(&stat_cmd); + add_command(&statx_cmd); add_command(&statfs_cmd); } diff --git a/io/statx.h b/io/statx.h new file mode 100644 index 0000000..ff08e27 --- /dev/null +++ b/io/statx.h @@ -0,0 +1,162 @@ +#ifndef XFS_IO_STATX_H +#define XFS_IO_STATX_H + +#include <unistd.h> +#include <sys/syscall.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 + +#ifndef __NR_statx +# ifdef __i386__ +# define __NR_statx 383 +# elif defined (__ILP32__) +# define __NR_statx (__X32_SYSCALL_BIT + 332) +# elif defined (__x86_64__) +# define __NR_statx 332 +# endif +#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 */ +#define STATX__RESERVED 0x80000000U /* Reserved for future struct statx expansion */ + +/* + * 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 e384327..b09a178 100644 --- a/man/man8/xfs_io.8 +++ b/man/man8/xfs_io.8 @@ -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> --- V5: address djwong's pedantry, except for mst3k ;) V4: Fix up __NR_statx defines, handle it if not defined (ala dhowells testcase) fix trailing whitespace in manpage 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()