2017-04-06 14:15:45 +00:00
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.\" Copyright (c) 2017 David Howells <dhowells@redhat.com>
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.\"
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.\" Derived from the stat.2 manual page:
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.\" Copyright (c) 1992 Drew Eckhardt (drew@cs.colorado.edu), March 28, 1992
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.\" Parts Copyright (c) 1995 Nicolai Langfeldt (janl@ifi.uio.no), 1/1/95
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.\" and Copyright (c) 2006, 2007, 2014 Michael Kerrisk <mtk.manpages@gmail.com>
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.\"
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.\" %%%LICENSE_START(VERBATIM)
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.\" Permission is granted to make and distribute verbatim copies of this
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.\" manual provided the copyright notice and this permission notice are
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.\" preserved on all copies.
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.\"
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.\" Permission is granted to copy and distribute modified versions of this
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.\" manual under the conditions for verbatim copying, provided that the
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.\" entire resulting derived work is distributed under the terms of a
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.\" permission notice identical to this one.
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.\"
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.\" Since the Linux kernel and libraries are constantly changing, this
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.\" manual page may be incorrect or out-of-date. The author(s) assume no
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.\" responsibility for errors or omissions, or for damages resulting from
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.\" the use of the information contained herein. The author(s) may not
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.\" have taken the same level of care in the production of this manual,
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.\" which is licensed free of charge, as they might when working
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.\" professionally.
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.\"
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.\" Formatted or processed versions of this manual, if unaccompanied by
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.\" the source, must acknowledge the copyright and authors of this work.
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.\" %%%LICENSE_END
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.\"
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iconv.1, ldd.1, accept.2, access.2, add_key.2, arch_prctl.2, bpf.2, chmod.2, chown.2, close_range.2, copy_file_range.2, execve.2, execveat.2, fanotify_mark.2, futex.2, futimesat.2, getpriority.2, intro.2, ioctl_tty.2, keyctl.2, link.2, membarrier.2, mkdir.2, mknod.2, mlock.2, mount.2, mount_setattr.2, open.2, open_by_handle_at.2, perf_event_open.2, pidfd_open.2, readlink.2, readv.2, rename.2, request_key.2, seccomp.2, sigaction.2, stat.2, statx.2, symlink.2, syscalls.2, umount.2, unlink.2, utimensat.2, wait.2, bsearch.3, fflush.3, getaddrinfo.3, getauxval.3, getopt.3, getsubopt.3, mkfifo.3, pthread_mutex_consistent.3, pthread_setname_np.3, pthread_tryjoin_np.3, scandir.3, sem_wait.3, stailq.3, strlen.3, strstr.3, termios.3, tsearch.3, wcslen.3, wcstok.3, wordexp.3, proc.5, capabilities.7, cgroups.7, fanotify.7, mount_namespaces.7, namespaces.7, path_resolution.7, pipe.7, posixoptions.7, user_namespaces.7, vdso.7, iconvconfig.8, ld.so.8: tstamp
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2021-08-27 00:44:07 +00:00
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.TH STATX 2 2021-08-27 "Linux" "Linux Programmer's Manual"
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2017-04-06 14:15:45 +00:00
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.SH NAME
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2017-04-22 19:15:56 +00:00
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statx \- get file status (extended)
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2017-04-06 14:15:45 +00:00
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.SH SYNOPSIS
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.nf
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2021-06-12 08:31:25 +00:00
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.BR "#include <fcntl.h> " "/* Definition of " AT_* " constants */"
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2017-04-06 14:15:45 +00:00
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.B #include <sys/stat.h>
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_syscall.2, clock_getres.2, clone.2, copy_file_range.2, create_module.2, delete_module.2, fallocate.2, futex.2, get_kernel_syms.2, get_robust_list.2, getcpu.2, getdents.2, gettid.2, gettimeofday.2, getunwind.2, init_module.2, io_cancel.2, io_destroy.2, io_getevents.2, io_setup.2, io_submit.2, ioctl_userfaultfd.2, ioprio_set.2, kcmp.2, kexec_load.2, keyctl.2, link.2, llseek.2, memfd_create.2, mmap.2, mq_getsetattr.2, msgctl.2, msgget.2, open_by_handle_at.2, outb.2, perf_event_open.2, pivot_root.2, process_vm_readv.2, query_module.2, readdir.2, recvmmsg.2, rename.2, request_key.2, restart_syscall.2, rt_sigqueueinfo.2, s390_pci_mmio_write.2, s390_runtime_instr.2, sched_setattr.2, seccomp.2, select.2, select_tut.2, send.2, sendmmsg.2, set_thread_area.2, set_tid_address.2, sgetmask.2, shmop.2, sigaction.2, sigprocmask.2, splice.2, spu_create.2, spu_run.2, statx.2, subpage_prot.2, sync_file_range.2, syscall.2, sysctl.2, sysfs.2, tee.2, timer_create.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, tkill.2, uselib.2, utimensat.2, vmsplice.2, wait.2, aio_init.3, asinh.3, atan2.3, atanh.3, backtrace.3, basename.3, bswap.3, bzero.3, catgets.3, catopen.3, dladdr.3, dlsym.3, endian.3, envz_add.3, erf.3, erfc.3, error.3, ferror.3, ffs.3, fgetc.3, fmemopen.3, fopen.3, fopencookie.3, fseek.3, ftw.3, futimes.3, getdate.3, getenv.3, getline.3, getlogin.3, getrpcent.3, getsubopt.3, getutmp.3, getw.3, gnu_get_libc_version.3, inet_net_pton.3, isalpha.3, lio_listio.3, makedev.3, malloc_get_state.3, malloc_stats.3, malloc_trim.3, malloc_usable_size.3, matherr.3, memchr.3, nextup.3, ntp_gettime.3, posix_madvise.3, program_invocation_name.3, pthread_atfork.3, pthread_attr_setaffinity_np.3, pthread_attr_setdetachstate.3, pthread_attr_setguardsize.3, pthread_attr_setinheritsched.3, pthread_attr_setschedparam.3, pthread_attr_setschedpolicy.3, pthread_attr_setscope.3, pthread_attr_setstack.3, pthread_attr_setstackaddr.3, pthread_attr_setstacksize.3, pthread_cleanup_push_defer_np.3, pthread_detach.3, pthread_equal.3, pthread_exit.3, pthread_join.3, pthread_kill.3, pthread_kill_other_threads_np.3, pthread_rwlockattr_setkind_np.3, pthread_self.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setschedprio.3, pthread_testcancel.3, pthread_tryjoin_np.3, pthread_yield.3, puts.3, random.3, random_r.3, rpc.3, sched_getcpu.3, setnetgrent.3, sigwait.3, stdin.3, strerror.3, strfmon.3, timeradd.3, tmpnam.3, toupper.3, towlower.3, towupper.3, ttyname.3, uselocale.3, xdr.3, dsp56k.4, sigevent.7, vdso.7: ffix
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-15 17:26:11 +00:00
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.PP
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2021-02-13 23:10:21 +00:00
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.BI "int statx(int " dirfd ", const char *restrict " pathname ", int " flags ,
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.BI " unsigned int " mask ", struct statx *restrict " statxbuf );
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2017-04-06 14:15:45 +00:00
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.fi
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.SH DESCRIPTION
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This function returns information about a file, storing it in the buffer
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pointed to by
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2017-04-27 12:27:15 +00:00
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.IR statxbuf .
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2017-04-23 10:05:25 +00:00
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The returned buffer is a structure of the following type:
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2017-04-06 14:15:45 +00:00
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.PP
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.in +4n
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execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
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.EX
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2017-04-06 14:15:45 +00:00
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struct statx {
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2017-04-21 14:51:52 +00:00
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__u32 stx_mask; /* Mask of bits indicating
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filled fields */
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__u32 stx_blksize; /* Block size for filesystem I/O */
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__u64 stx_attributes; /* Extra file attribute indicators */
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__u32 stx_nlink; /* Number of hard links */
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__u32 stx_uid; /* User ID of owner */
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__u32 stx_gid; /* Group ID of owner */
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__u16 stx_mode; /* File type and mode */
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__u64 stx_ino; /* Inode number */
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__u64 stx_size; /* Total size in bytes */
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__u64 stx_blocks; /* Number of 512B blocks allocated */
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2017-04-26 12:09:00 +00:00
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__u64 stx_attributes_mask;
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pldd.1, bpf.2, clone.2, dup.2, ioctl_fat.2, nfsservctl.2, open_by_handle_at.2, perf_event_open.2, pivot_root.2, request_key.2, sched_setaffinity.2, seccomp.2, select.2, statx.2, dl_iterate_phdr.3, dlinfo.3, dlopen.3, insque.3, newlocale.3, printf.3, pthread_setname_np.3, rpc.3, stdarg.3, strfmon.3, veth.4, proc.5, slabinfo.5, cgroup_namespaces.7, cgroups.7, cpuset.7, fanotify.7, inotify.7, mount_namespaces.7, sock_diag.7, user_namespaces.7, ld.so.8: Use \(aq instead of ' inside monospace fonts
Use \(aq to get an unslanted single quote inside monospace code
blocks. Using a simple ' results in a slanted quote inside PDFs.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-09-24 07:32:31 +00:00
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/* Mask to show what\(aqs supported
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2017-04-26 12:09:00 +00:00
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in stx_attributes */
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2017-04-21 14:42:39 +00:00
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/* The following fields are file timestamps */
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struct statx_timestamp stx_atime; /* Last access */
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struct statx_timestamp stx_btime; /* Creation */
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struct statx_timestamp stx_ctime; /* Last status change */
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struct statx_timestamp stx_mtime; /* Last modification */
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2017-04-25 11:05:15 +00:00
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/* If this file represents a device, then the next two
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fields contain the ID of the device */
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2017-04-21 14:51:52 +00:00
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__u32 stx_rdev_major; /* Major ID */
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__u32 stx_rdev_minor; /* Minor ID */
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2017-04-21 14:42:39 +00:00
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/* The next two fields contain the ID of the device
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2017-04-23 11:22:18 +00:00
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containing the filesystem where the file resides */
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2017-04-21 14:51:52 +00:00
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__u32 stx_dev_major; /* Major ID */
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__u32 stx_dev_minor; /* Minor ID */
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2021-08-12 22:46:47 +00:00
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__u64 stx_mnt_id; /* Mount ID */
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2017-04-06 14:15:45 +00:00
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};
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execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
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.EE
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2017-04-06 14:15:45 +00:00
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.in
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.PP
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2017-04-21 14:42:39 +00:00
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The file timestamps are structures of the following type:
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2017-04-06 14:15:45 +00:00
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.PP
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.in +4n
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execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
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.EX
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2017-04-06 14:15:45 +00:00
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struct statx_timestamp {
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2017-04-21 14:42:39 +00:00
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__s64 tv_sec; /* Seconds since the Epoch (UNIX time) */
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2017-04-26 12:09:00 +00:00
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__u32 tv_nsec; /* Nanoseconds since tv_sec */
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2017-04-06 14:15:45 +00:00
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};
|
execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
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.EE
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2017-04-06 14:15:45 +00:00
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.in
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.PP
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2017-04-23 11:22:18 +00:00
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(Note that reserved space and padding is omitted.)
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2017-04-06 14:15:45 +00:00
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.SS
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Invoking \fBstatx\fR():
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2017-04-21 14:44:51 +00:00
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To access a file's status, no permissions are required on the file itself,
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but in the case of
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2017-04-06 14:15:45 +00:00
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.BR statx ()
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2017-04-22 19:15:56 +00:00
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with a pathname,
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2017-04-21 14:44:51 +00:00
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execute (search) permission is required on all of the directories in
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2017-04-06 14:15:45 +00:00
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.I pathname
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that lead to the file.
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.PP
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.BR statx ()
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uses
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2017-04-21 14:42:39 +00:00
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.IR pathname ,
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.IR dirfd ,
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and
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.IR flags
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2017-04-25 19:39:56 +00:00
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to identify the target file in one of the following ways:
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2017-04-06 14:15:45 +00:00
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.TP
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2017-04-23 11:09:43 +00:00
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An absolute pathname
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If
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2017-04-06 14:15:45 +00:00
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.I pathname
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2017-04-23 11:09:43 +00:00
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begins with a slash,
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then it is an absolute pathname that identifies the target file.
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In this case,
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2017-04-06 14:15:45 +00:00
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.I dirfd
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2017-04-21 14:44:51 +00:00
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is ignored.
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2017-04-06 14:15:45 +00:00
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.TP
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2017-04-23 11:09:43 +00:00
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A relative pathname
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If
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2017-04-06 14:15:45 +00:00
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.I pathname
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2017-04-23 11:09:43 +00:00
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is a string that begins with a character other than a slash and
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2017-04-21 14:42:39 +00:00
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.IR dirfd
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is
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2017-04-23 11:09:43 +00:00
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.BR AT_FDCWD ,
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then
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.I pathname
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is a relative pathname that is interpreted relative to the process's
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current working directory.
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2017-04-06 14:15:45 +00:00
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.TP
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2017-04-26 12:09:00 +00:00
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A directory-relative pathname
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2017-04-23 11:09:43 +00:00
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If
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2017-04-06 14:15:45 +00:00
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.I pathname
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2017-04-23 11:09:43 +00:00
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is a string that begins with a character other than a slash and
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2017-04-06 14:15:45 +00:00
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.I dirfd
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2017-04-23 11:09:43 +00:00
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is a file descriptor that refers to a directory, then
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.I pathname
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is a relative pathname that is interpreted relative to the directory
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referred to by
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2017-04-06 14:15:45 +00:00
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.IR dirfd .
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2021-08-12 03:01:00 +00:00
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(See
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.BR openat (2)
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for an explanation of why this is useful.)
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2017-04-06 14:15:45 +00:00
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.TP
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2017-04-23 11:09:43 +00:00
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By file descriptor
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If
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2017-04-21 14:51:52 +00:00
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.IR pathname
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2017-04-27 12:20:52 +00:00
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is an empty string and the
|
2017-04-23 11:09:43 +00:00
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.B AT_EMPTY_PATH
|
2017-04-27 12:20:52 +00:00
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flag is specified in
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.IR flags
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(see below),
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then the target file is the one referred to by the file descriptor
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.IR dirfd .
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2017-04-06 14:15:45 +00:00
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.PP
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.I flags
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2017-04-22 19:15:56 +00:00
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can be used to influence a pathname-based lookup.
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2017-04-21 14:44:51 +00:00
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A value for
|
2017-04-06 14:15:45 +00:00
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.I flags
|
2017-04-23 10:05:25 +00:00
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is constructed by ORing together zero or more of the following constants:
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2017-04-06 14:15:45 +00:00
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.TP
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.BR AT_EMPTY_PATH
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.\" commit 65cfc6722361570bfe255698d9cd4dccaf47570d
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If
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.I pathname
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|
is an empty string, operate on the file referred to by
|
|
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.IR dirfd
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(which may have been obtained using the
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.BR open (2)
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.B O_PATH
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flag).
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2017-04-27 12:20:52 +00:00
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In this case,
|
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.I dirfd
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can refer to any type of file, not just a directory.
|
_syscall.2, bpf.2, cacheflush.2, capget.2, chdir.2, chmod.2, chroot.2, clock_getres.2, clock_nanosleep.2, clone.2, close.2, connect.2, copy_file_range.2, create_module.2, delete_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, execveat.2, fallocate.2, flock.2, fork.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_mempolicy.2, get_robust_list.2, getcpu.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpriority.2, getrandom.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.2, init_module.2, inotify_add_watch.2, inotify_init.2, inotify_rm_watch.2, intro.2, io_cancel.2, io_destroy.2, io_getevents.2, io_setup.2, io_submit.2, ioctl_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_tty.2, ioctl_userfaultfd.2, ioperm.2, iopl.2, ioprio_set.2, kcmp.2, kexec_load.2, keyctl.2, kill.2, link.2, listen.2, listxattr.2, llseek.2, lookup_dcookie.2, lseek.2, madvise.2, mbind.2, membarrier.2, memfd_create.2, migrate_pages.2, mincore.2, mkdir.2, mknod.2, mlock.2, mmap.2, mmap2.2, modify_ldt.2, move_pages.2, mprotect.2, mq_getsetattr.2, mremap.2, msgctl.2, msgget.2, msgop.2, msync.2, nanosleep.2, nfsservctl.2, nice.2, open_by_handle_at.2, outb.2, perf_event_open.2, perfmonctl.2, personality.2, pivot_root.2, pkey_alloc.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, read.2, readahead.2, readdir.2, readv.2, reboot.2, recv.2, recvmmsg.2, remap_file_pages.2, rename.2, request_key.2, restart_syscall.2, rt_sigqueueinfo.2, s390_pci_mmio_write.2, s390_runtime_instr.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, seccomp.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, sendmmsg.2, set_mempolicy.2, set_thread_area.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setns.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, splice.2, spu_create.2, spu_run.2, stat.2, statfs.2, statx.2, subpage_prot.2, swapon.2, symlink.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysinfo.2, syslog.2, tee.2, time.2, timer_create.2, timer_getoverrun.2, timer_settime.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, unimplemented.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, utime.2, utimensat.2, vfork.2, vmsplice.2, wait.2, wait4.2, write.2: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 07:30:51 +00:00
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|
|
.IP
|
2017-04-06 14:15:45 +00:00
|
|
|
If
|
|
|
|
.I dirfd
|
|
|
|
is
|
|
|
|
.BR AT_FDCWD ,
|
|
|
|
the call operates on the current working directory.
|
_syscall.2, bpf.2, cacheflush.2, capget.2, chdir.2, chmod.2, chroot.2, clock_getres.2, clock_nanosleep.2, clone.2, close.2, connect.2, copy_file_range.2, create_module.2, delete_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, execveat.2, fallocate.2, flock.2, fork.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_mempolicy.2, get_robust_list.2, getcpu.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpriority.2, getrandom.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.2, init_module.2, inotify_add_watch.2, inotify_init.2, inotify_rm_watch.2, intro.2, io_cancel.2, io_destroy.2, io_getevents.2, io_setup.2, io_submit.2, ioctl_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_tty.2, ioctl_userfaultfd.2, ioperm.2, iopl.2, ioprio_set.2, kcmp.2, kexec_load.2, keyctl.2, kill.2, link.2, listen.2, listxattr.2, llseek.2, lookup_dcookie.2, lseek.2, madvise.2, mbind.2, membarrier.2, memfd_create.2, migrate_pages.2, mincore.2, mkdir.2, mknod.2, mlock.2, mmap.2, mmap2.2, modify_ldt.2, move_pages.2, mprotect.2, mq_getsetattr.2, mremap.2, msgctl.2, msgget.2, msgop.2, msync.2, nanosleep.2, nfsservctl.2, nice.2, open_by_handle_at.2, outb.2, perf_event_open.2, perfmonctl.2, personality.2, pivot_root.2, pkey_alloc.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, read.2, readahead.2, readdir.2, readv.2, reboot.2, recv.2, recvmmsg.2, remap_file_pages.2, rename.2, request_key.2, restart_syscall.2, rt_sigqueueinfo.2, s390_pci_mmio_write.2, s390_runtime_instr.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, seccomp.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, sendmmsg.2, set_mempolicy.2, set_thread_area.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setns.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, splice.2, spu_create.2, spu_run.2, stat.2, statfs.2, statx.2, subpage_prot.2, swapon.2, symlink.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysinfo.2, syslog.2, tee.2, time.2, timer_create.2, timer_getoverrun.2, timer_settime.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, unimplemented.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, utime.2, utimensat.2, vfork.2, vmsplice.2, wait.2, wait4.2, write.2: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 07:30:51 +00:00
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.IP
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2017-04-06 14:15:45 +00:00
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This flag is Linux-specific; define
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.B _GNU_SOURCE
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.\" Before glibc 2.16, defining _ATFILE_SOURCE sufficed
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to obtain its definition.
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.TP
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.BR AT_NO_AUTOMOUNT
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Don't automount the terminal ("basename") component of
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.I pathname
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if it is a directory that is an automount point.
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This allows the caller to gather attributes of an automount point
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(rather than the location it would mount).
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This flag can be used in tools that scan directories
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to prevent mass-automounting of a directory of automount points.
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The
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.B AT_NO_AUTOMOUNT
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flag has no effect if the mount point has already been mounted over.
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This flag is Linux-specific; define
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.B _GNU_SOURCE
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.\" Before glibc 2.16, defining _ATFILE_SOURCE sufficed
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to obtain its definition.
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.TP
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.B AT_SYMLINK_NOFOLLOW
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If
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.I pathname
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is a symbolic link, do not dereference it:
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instead return information about the link itself, like
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2017-04-21 14:42:39 +00:00
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.BR lstat (2).
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.PP
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.I flags
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2017-04-21 14:44:51 +00:00
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can also be used to control what sort of synchronization the kernel will do
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when querying a file on a remote filesystem.
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This is done by ORing in one of the following values:
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.TP
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.B AT_STATX_SYNC_AS_STAT
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Do whatever
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.BR stat (2)
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does.
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2017-04-25 19:39:56 +00:00
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This is the default and is very much filesystem-specific.
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.TP
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2017-04-21 14:47:05 +00:00
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.B AT_STATX_FORCE_SYNC
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2017-04-22 18:55:24 +00:00
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Force the attributes to be synchronized with the server.
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This may require that
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a network filesystem perform a data writeback to get the timestamps correct.
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.TP
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2017-04-21 14:47:05 +00:00
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.B AT_STATX_DONT_SYNC
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2017-04-22 18:55:24 +00:00
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Don't synchronize anything, but rather just take whatever
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the system has cached if possible.
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This may mean that the information returned is approximate, but,
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on a network filesystem, it may not involve a round trip to the server - even
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if no lease is held.
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.PP
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The
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.I mask
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argument to
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.BR statx ()
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is used to tell the kernel which fields the caller is interested in.
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.I mask
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is an ORed combination of the following constants:
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.PP
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.in +4n
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.TS
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lB l.
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STATX_TYPE Want stx_mode & S_IFMT
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intro.1, clock_getres.2, clone.2, futex.2, ioctl_fat.2, mkdir.2, mknod.2, mmap.2, open.2, statx.2, umask.2, userfaultfd.2, glob.3, mkfifo.3, termios.3, wordexp.3, console_codes.4, sk98lin.4, vcs.4, dir_colors.5, hosts.equiv.5, proc.5, termcap.5, utmp.5, ascii.7, bpf-helpers.7, charsets.7, environ.7, glob.7, mailaddr.7, netlink.7, operator.7, suffixes.7, tcp.7, unicode.7, uri.7, zic.8: Use "\(ti" instead of "~"
A naked tilde ("~") renders poorly in PDF. Instead use "\(ti",
which renders better in a PDF, and produces the same glyph
when rendering on a terminal.
Reported-by: Geoff Clare <gwc@opengroup.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-08-06 19:43:46 +00:00
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STATX_MODE Want stx_mode & \(tiS_IFMT
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2017-04-06 14:15:45 +00:00
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STATX_NLINK Want stx_nlink
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STATX_UID Want stx_uid
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STATX_GID Want stx_gid
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2017-04-23 11:12:12 +00:00
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STATX_ATIME Want stx_atime
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STATX_MTIME Want stx_mtime
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STATX_CTIME Want stx_ctime
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STATX_INO Want stx_ino
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STATX_SIZE Want stx_size
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STATX_BLOCKS Want stx_blocks
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STATX_BASIC_STATS [All of the above]
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STATX_BTIME Want stx_btime
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STATX_MNT_ID Want stx_mnt_id (since Linux 5.8)
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2017-04-06 14:15:45 +00:00
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STATX_ALL [All currently available fields]
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.TE
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.in
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.PP
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2019-08-20 07:29:49 +00:00
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Note that, in general, the kernel does
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2017-04-23 11:15:33 +00:00
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.I not
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reject values in
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.I mask
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other than the above.
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2019-08-20 07:29:49 +00:00
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(For an exception, see
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.B EINVAL
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in errors.)
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2017-04-23 11:15:33 +00:00
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Instead, it simply informs the caller which values are supported
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by this kernel and filesystem via the
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.I statx.stx_mask
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field.
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Therefore,
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.I "do not"
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simply set
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.I mask
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to
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.B UINT_MAX
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(all bits set),
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as one or more bits may, in the future, be used to specify an
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extension to the buffer.
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.SS
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The returned information
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The status information for the target file is returned in the
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.I statx
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structure pointed to by
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.IR statxbuf .
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Included in this is
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.I stx_mask
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which indicates what other information has been returned.
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.I stx_mask
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2017-04-23 11:22:18 +00:00
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has the same format as the
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.I mask
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argument and bits are set in it to indicate
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which fields have been filled in.
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.PP
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2017-04-21 14:48:55 +00:00
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It should be noted that the kernel may return fields that weren't
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requested and may fail to return fields that were requested,
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depending on what the backing filesystem supports.
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2017-04-26 19:09:00 +00:00
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(Fields that are given values despite being unrequested can just be ignored.)
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In either case,
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.I stx_mask
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will not be equal
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.IR mask .
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.PP
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If a filesystem does not support a field or if it has
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an unrepresentable value (for instance, a file with an exotic type),
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then the mask bit corresponding to that field will be cleared in
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.I stx_mask
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even if the user asked for it and a dummy value will be filled in for
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compatibility purposes if one is available (e.g., a dummy UID and GID may be
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specified to mount under some circumstances).
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.PP
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A filesystem may also fill in fields that the caller didn't ask for if it has
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values for them available and the information is available at no extra cost.
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If this happens, the corresponding bits will be set in
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.IR stx_mask .
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.PP
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.\" Background: inode attributes are modified with i_mutex held, but
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.\" read by stat() without taking the mutex.
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.IR Note :
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for performance and simplicity reasons, different fields in the
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.I statx
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structure may contain state information from different moments
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during the execution of the system call.
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For example, if
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.IR stx_mode
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or
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.IR stx_uid
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is changed by another process by calling
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.BR chmod (2)
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or
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.BR chown (2),
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.BR stat ()
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might return the old
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.I stx_mode
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together with the new
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.IR stx_uid ,
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or the old
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.I stx_uid
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together with the new
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.IR stx_mode .
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.PP
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2017-04-21 14:51:52 +00:00
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Apart from
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.I stx_mask
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(which is described above), the fields in the
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.I statx
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structure are:
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.TP
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2017-04-26 12:21:59 +00:00
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.I stx_blksize
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The "preferred" block size for efficient filesystem I/O.
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(Writing to a file in
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smaller chunks may cause an inefficient read-modify-rewrite.)
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.TP
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.I stx_attributes
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Further status information about the file (see below for more information).
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.TP
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.I stx_nlink
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The number of hard links on a file.
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.TP
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.I stx_uid
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This field contains the user ID of the owner of the file.
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.TP
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.I stx_gid
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This field contains the ID of the group owner of the file.
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.TP
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.I stx_mode
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The file type and mode.
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2017-04-22 19:50:10 +00:00
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See
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.BR inode (7)
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for details.
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.TP
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2017-04-26 12:23:19 +00:00
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.I stx_ino
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The inode number of the file.
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.TP
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.I stx_size
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The size of the file (if it is a regular file or a symbolic link) in bytes.
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2017-04-21 14:48:55 +00:00
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The size of a symbolic link is the length of the pathname it contains,
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without a terminating null byte.
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.TP
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.I stx_blocks
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The number of blocks allocated to the file on the medium, in 512-byte units.
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(This may be smaller than
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.IR stx_size /512
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when the file has holes.)
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.TP
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2017-04-26 12:21:59 +00:00
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.I stx_attributes_mask
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A mask indicating which bits in
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.IR stx_attributes
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are supported by the VFS and the filesystem.
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.TP
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.I stx_atime
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The file's last access timestamp.
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.TP
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.I stx_btime
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2017-04-21 14:44:51 +00:00
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The file's creation timestamp.
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2017-04-06 14:15:45 +00:00
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.TP
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.I stx_ctime
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The file's last status change timestamp.
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2017-04-06 14:15:45 +00:00
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.TP
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.I stx_mtime
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2017-04-21 14:44:51 +00:00
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The file's last modification timestamp.
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2017-04-26 12:21:59 +00:00
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.TP
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.IR stx_dev_major " and " stx_dev_minor
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The device on which this file (inode) resides.
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.TP
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.IR stx_rdev_major " and " stx_rdev_minor
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The device that this file (inode) represents if the file is of block or
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character device type.
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2021-08-12 22:46:47 +00:00
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.TP
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.I stx_mnt_id
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.\" commit fa2fcf4f1df1559a0a4ee0f46915b496cc2ebf60
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2021-08-12 23:12:45 +00:00
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The mount ID of the mount containing the file.
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This is the same number reported by
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2021-08-12 22:46:47 +00:00
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.BR name_to_handle_at (2)
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and corresponds to the number in the first field in one of the records in
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.IR /proc/self/mountinfo .
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2017-04-06 14:15:45 +00:00
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.PP
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2017-04-22 19:50:10 +00:00
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For further information on the above fields, see
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.BR inode (7).
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2017-04-21 14:44:51 +00:00
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.\"
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2017-04-06 14:15:45 +00:00
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.SS File attributes
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The
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.I stx_attributes
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2017-04-23 10:05:25 +00:00
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field contains a set of ORed flags that indicate additional attributes
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2017-04-26 12:09:00 +00:00
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of the file.
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Note that any attribute that is not indicated as supported by
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.I stx_attributes_mask
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has no usable value here.
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The bits in
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.I stx_attributes_mask
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correspond bit-by-bit to
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.IR stx_attributes .
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_syscall.2, bpf.2, cacheflush.2, capget.2, chdir.2, chmod.2, chroot.2, clock_getres.2, clock_nanosleep.2, clone.2, close.2, connect.2, copy_file_range.2, create_module.2, delete_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, execveat.2, fallocate.2, flock.2, fork.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_mempolicy.2, get_robust_list.2, getcpu.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpriority.2, getrandom.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.2, init_module.2, inotify_add_watch.2, inotify_init.2, inotify_rm_watch.2, intro.2, io_cancel.2, io_destroy.2, io_getevents.2, io_setup.2, io_submit.2, ioctl_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_tty.2, ioctl_userfaultfd.2, ioperm.2, iopl.2, ioprio_set.2, kcmp.2, kexec_load.2, keyctl.2, kill.2, link.2, listen.2, listxattr.2, llseek.2, lookup_dcookie.2, lseek.2, madvise.2, mbind.2, membarrier.2, memfd_create.2, migrate_pages.2, mincore.2, mkdir.2, mknod.2, mlock.2, mmap.2, mmap2.2, modify_ldt.2, move_pages.2, mprotect.2, mq_getsetattr.2, mremap.2, msgctl.2, msgget.2, msgop.2, msync.2, nanosleep.2, nfsservctl.2, nice.2, open_by_handle_at.2, outb.2, perf_event_open.2, perfmonctl.2, personality.2, pivot_root.2, pkey_alloc.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, read.2, readahead.2, readdir.2, readv.2, reboot.2, recv.2, recvmmsg.2, remap_file_pages.2, rename.2, request_key.2, restart_syscall.2, rt_sigqueueinfo.2, s390_pci_mmio_write.2, s390_runtime_instr.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, seccomp.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, sendmmsg.2, set_mempolicy.2, set_thread_area.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setns.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, splice.2, spu_create.2, spu_run.2, stat.2, statfs.2, statx.2, subpage_prot.2, swapon.2, symlink.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysinfo.2, syslog.2, tee.2, time.2, timer_create.2, timer_getoverrun.2, timer_settime.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, unimplemented.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, utime.2, utimensat.2, vfork.2, vmsplice.2, wait.2, wait4.2, write.2: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 07:30:51 +00:00
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.PP
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2017-04-26 12:09:00 +00:00
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The flags are as follows:
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2017-04-06 14:15:45 +00:00
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.TP
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2017-04-21 14:51:52 +00:00
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.B STATX_ATTR_COMPRESSED
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2017-04-25 19:39:56 +00:00
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The file is compressed by the filesystem and may take extra resources
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to access.
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2017-04-06 14:15:45 +00:00
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.TP
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2017-04-21 14:51:52 +00:00
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.B STATX_ATTR_IMMUTABLE
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2017-04-21 14:48:55 +00:00
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The file cannot be modified: it cannot be deleted or renamed,
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no hard links can be created to this file and no data can be written to it.
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2017-04-21 14:47:05 +00:00
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See
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.BR chattr (1).
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2017-04-06 14:15:45 +00:00
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.TP
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2017-04-21 14:51:52 +00:00
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.B STATX_ATTR_APPEND
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2017-04-21 14:44:51 +00:00
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The file can only be opened in append mode for writing.
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Random access writing
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is not permitted.
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2017-04-21 14:47:05 +00:00
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See
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.BR chattr (1).
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2017-04-06 14:15:45 +00:00
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.TP
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2017-04-21 14:51:52 +00:00
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.B STATX_ATTR_NODUMP
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2017-04-21 14:47:05 +00:00
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File is not a candidate for backup when a backup program such as
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.BR dump (8)
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is run.
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See
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.BR chattr (1).
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2017-04-06 14:15:45 +00:00
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.TP
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2017-04-21 14:51:52 +00:00
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.B STATX_ATTR_ENCRYPTED
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2017-04-06 14:15:45 +00:00
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A key is required for the file to be encrypted by the filesystem.
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2020-01-28 19:24:49 +00:00
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.TP
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2020-03-12 08:20:50 +00:00
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.BR STATX_ATTR_VERITY " (since Linux 5.5)"
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.\" commit 3ad2522c64cff1f5aebb987b00683268f0cc7c29
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The file has fs-verity enabled.
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It cannot be written to, and all reads from it will be verified
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against a cryptographic hash that covers the
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entire file (e.g., via a Merkle tree).
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2020-05-05 00:20:16 +00:00
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.TP
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2020-11-01 06:15:54 +00:00
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.BR STATX_ATTR_DAX " (since Linux 5.8)"
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2020-09-29 08:25:02 +00:00
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The file is in the DAX (cpu direct access) state.
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DAX state attempts to
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2020-05-05 00:20:16 +00:00
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minimize software cache effects for both I/O and memory mappings of this file.
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It requires a file system which has been configured to support DAX.
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2020-11-01 06:15:54 +00:00
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.IP
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2020-09-29 08:25:02 +00:00
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DAX generally assumes all accesses are via CPU load / store instructions
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which can minimize overhead for small accesses,
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but may adversely affect CPU utilization for large transfers.
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2020-11-01 06:15:54 +00:00
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.IP
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2020-05-05 00:20:16 +00:00
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File I/O is done directly to/from user-space buffers and memory mapped I/O may
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2020-09-29 08:25:02 +00:00
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be performed with direct memory mappings that bypass the kernel page cache.
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2020-11-01 06:15:54 +00:00
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.IP
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2020-05-05 00:20:16 +00:00
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While the DAX property tends to result in data being transferred synchronously,
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2020-09-29 08:25:02 +00:00
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it does not give the same guarantees as the
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.B O_SYNC
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flag (see
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.BR open (2)),
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where data and the necessary metadata are transferred together.
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2020-11-01 06:15:54 +00:00
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.IP
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2020-09-29 08:25:02 +00:00
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A DAX file may support being mapped with the
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.B MAP_SYNC
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flag, which enables a
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2020-05-05 00:20:16 +00:00
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program to use CPU cache flush instructions to persist CPU store operations
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without an explicit
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2020-09-29 08:25:02 +00:00
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.BR fsync (2).
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2020-05-05 00:20:16 +00:00
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See
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2020-09-29 08:25:02 +00:00
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.BR mmap (2)
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2020-05-05 00:20:16 +00:00
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for more information.
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2017-04-06 14:15:45 +00:00
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.SH RETURN VALUE
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On success, zero is returned.
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On error, \-1 is returned, and
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.I errno
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2021-01-07 07:12:28 +00:00
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is set to indicate the error.
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2017-04-06 14:15:45 +00:00
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.SH ERRORS
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.TP
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.B EACCES
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Search permission is denied for one of the directories
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in the path prefix of
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.IR pathname .
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(See also
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.BR path_resolution (7).)
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.TP
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.B EBADF
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access.2, chmod.2, chown.2, execveat.2, futimesat.2, link.2, mkdir.2, mknod.2, mount_setattr.2, open.2, open_by_handle_at.2, readlink.2, rename.2, stat.2, statx.2, symlink.2, unlink.2, utimensat.2, mkfifo.3, scandir.3: Fix EBADF error description
Make the description of the EBADF error for invalid 'dirfd' more
uniform. In particular, note that the error only occurs when the
pathname is relative, and that it occurs when the 'dirfd' is
neither valid *nor* has the value AT_FDCWD.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2021-08-12 02:05:59 +00:00
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.I pathname
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is relative but
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2017-04-06 14:15:45 +00:00
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.I dirfd
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access.2, chmod.2, chown.2, execveat.2, futimesat.2, link.2, mkdir.2, mknod.2, mount_setattr.2, open.2, open_by_handle_at.2, readlink.2, rename.2, stat.2, statx.2, symlink.2, unlink.2, utimensat.2, mkfifo.3, scandir.3: Fix EBADF error description
Make the description of the EBADF error for invalid 'dirfd' more
uniform. In particular, note that the error only occurs when the
pathname is relative, and that it occurs when the 'dirfd' is
neither valid *nor* has the value AT_FDCWD.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2021-08-12 02:05:59 +00:00
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is neither
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.B AT_FDCWD
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nor a valid file descriptor.
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2017-04-06 14:15:45 +00:00
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.TP
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.B EFAULT
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2017-04-27 12:26:31 +00:00
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.I pathname
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or
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2017-04-27 12:27:15 +00:00
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.I statxbuf
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2017-04-27 12:26:31 +00:00
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is NULL or points to a location outside the process's
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accessible address space.
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2017-04-06 14:15:45 +00:00
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.TP
|
2017-04-23 11:29:00 +00:00
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.B EINVAL
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Invalid flag specified in
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.IR flags .
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.TP
|
2017-04-26 12:09:00 +00:00
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.B EINVAL
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Reserved flag specified in
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.IR mask .
|
2019-08-20 07:29:49 +00:00
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(Currently, there is one such flag, designated by the constant
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.BR STATX__RESERVED ,
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with the value 0x80000000U.)
|
2017-04-26 12:09:00 +00:00
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.TP
|
2017-04-06 14:15:45 +00:00
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.B ELOOP
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2017-04-22 19:15:56 +00:00
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Too many symbolic links encountered while traversing the pathname.
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2017-04-06 14:15:45 +00:00
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.TP
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.B ENAMETOOLONG
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.I pathname
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is too long.
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.TP
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.B ENOENT
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A component of
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.I pathname
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|
does not exist, or
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.I pathname
|
2017-04-23 10:05:25 +00:00
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is an empty string and
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.B AT_EMPTY_PATH
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|
|
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was not specified in
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.IR flags .
|
2017-04-06 14:15:45 +00:00
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.TP
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.B ENOMEM
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Out of memory (i.e., kernel memory).
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.TP
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|
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.B ENOTDIR
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A component of the path prefix of
|
|
|
|
.I pathname
|
|
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|
is not a directory or
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|
|
|
.I pathname
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|
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|
is relative and
|
|
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.I dirfd
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|
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|
is a file descriptor referring to a file other than a directory.
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.SH VERSIONS
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|
.BR statx ()
|
2018-07-17 10:33:21 +00:00
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was added to Linux in kernel 4.11; library support was added in glibc 2.28.
|
2017-04-23 10:02:52 +00:00
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|
.SH CONFORMING TO
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|
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|
.BR statx ()
|
2017-04-25 19:39:56 +00:00
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|
|
is Linux-specific.
|
2017-04-06 14:15:45 +00:00
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.SH SEE ALSO
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|
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.BR ls (1),
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.BR stat (1),
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.BR access (2),
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.BR chmod (2),
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.BR chown (2),
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2021-08-12 22:46:47 +00:00
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.BR name_to_handle_at (2),
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2017-04-06 14:15:45 +00:00
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.BR readlink (2),
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2017-09-06 19:10:48 +00:00
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.BR stat (2),
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2017-04-06 14:15:45 +00:00
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.BR utime (2),
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2021-08-12 22:46:47 +00:00
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.BR proc (5),
|
2017-04-06 14:15:45 +00:00
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.BR capabilities (7),
|
2017-04-22 19:54:23 +00:00
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.BR inode (7),
|
2017-04-06 14:15:45 +00:00
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.BR symlink (7)
|