| ==================== Changes in man-pages-5.06 ==================== |
| |
| Released: 2020-04-11, Munich |
| |
| |
| Contributors |
| ------------ |
| |
| The following people contributed patches/fixes or (noted in brackets |
| in the changelog below) reports, notes, and ideas that have been |
| incorporated in changes in this release: |
| |
| Alejandro Colomar <colomar.6.4.3@gmail.com> |
| Aleksa Sarai <cyphar@cyphar.com> |
| Alexander Miller <alex.miller@gmx.de> |
| Andrea Arcangeli <aarcange@redhat.com> |
| André Almeida <andrealmeid@collabora.com> |
| Andrei Vagin <avagin@gmail.com> |
| Andrew Micallef <andrew.micallef@live.com.au> |
| Bart Van Assche <bvanassche@acm.org> |
| Benjamin Peterson <benjamin@python.org> |
| Bjarni Ingi Gislason <bjarniig@rhi.hi.is> |
| Christian Brauner <christian@brauner.io> |
| devi R.K <devi.feb27@gmail.com> |
| Dmitry Safonov <dima@arista.com> |
| Eric Biggers <ebiggers@google.com> |
| Eric Dumazet <eric.dumazet@gmail.com> |
| Eric Rannaud <e@nanocritical.com> |
| Eugene Syromyatnikov <evgsyr@gmail.com> |
| Heinrich Schuchardt <xypron.glpk@gmx.de> |
| Helge Deller <deller@gmx.de> |
| Jakub Wilk <jwilk@jwilk.net> |
| Jorgen Hansen <jhansen@vmware.com> |
| Julia Suvorova <jusual@mail.ru> |
| Keno Fischer <keno@juliacomputing.com> |
| Krzysztof Małysa <varqox@gmail.com> |
| Marc Lehmann <debian-reportbug@plan9.de> |
| Matthew Bobrowski <mbobrowski@mbobrowski.org> |
| Michael Galassi <michael@galassi.us> |
| Michael Kerrisk <mtk.manpages@gmail.com> |
| Michal Hocko <mhocko@kernel.org> |
| Mike Christie <mchristi@redhat.com> |
| Mike Frysinger <vapier@gentoo.org> |
| Pablo M. Ronchi <pmronchi@yahoo.com.ar> |
| Ricardo Biehl Pasquali <pasqualirb@gmail.com> |
| Stefan Hajnoczi <stefanha@redhat.com> |
| Stefano Garzarella <sgarzare@redhat.com> |
| Thomas Gleixner <tglx@linutronix.de> |
| Walter Harms <wharms@bfs.de> |
| Zack Weinberg <zackw@panix.com> |
| |
| Apologies if I missed anyone! |
| |
| |
| New and rewritten pages |
| ----------------------- |
| |
| openat2.2 |
| Aleksa Sarai [Michael Kerrisk] |
| Document new openat2(2) syscall |
| |
| pidfd_getfd.2 |
| Michael Kerrisk [Christian Brauner] |
| New manual page documenting the pidfd_getfd() system call |
| |
| select.2 |
| Michael Kerrisk |
| Rewrite DESCRIPTION |
| Improve structure and readability, at the same time incorporating |
| text and details that were formerly in select_tut(2). Also |
| move a few details in other parts of the page into DESCRIPTION. |
| Michael Kerrisk |
| Consolidate the discussion of pselect into a headed subsection |
| Michael Kerrisk |
| Consolidate historical glibc pselect() details under one subhead |
| Michael Kerrisk |
| Consolidate info on usleep() emulation in one place |
| Michael Kerrisk |
| Place the discussion of the self-pipe technique in a headed subsection |
| Michael Kerrisk |
| Note that FD_SET() and FD_CLR() do not return errors |
| Michael Kerrisk |
| Remove details of historical #include requirements |
| The POSIX situation has been the norm for a long time now, |
| and including ancient details overcomplicates the page. |
| Michael Kerrisk |
| Remove some ancient information about pre-POSIX types for 'timeout' |
| |
| select_tut.2 |
| Michael Kerrisk |
| Eliminate duplication of info across select_tut.2 and select2 |
| There was a lot of a duplication of info in SYNOPSIS, DESCRIPTION |
| RETURN VALUE, and SEE ALSO. Move all of the info to one place: |
| the select(2) page. |
| |
| sysvipc.7 |
| Michael Kerrisk |
| Rewrite this page as just a summary of the System V IPC APIs |
| All of the other details in this page have by now been moved into |
| the relevant *ctl(2) pages. |
| |
| time_namespaces.7 |
| Michael Kerrisk [Andrei Vagin, Dmitry Safonov, Thomas Gleixner] |
| New page documenting time namespaces |
| |
| |
| Newly documented interfaces in existing pages |
| --------------------------------------------- |
| |
| arch_prctl.2 |
| Keno Fischer |
| Add ARCH_SET_CPUID subcommand |
| |
| clock_getres.2 |
| Benjamin Peterson |
| Document CLOCK_TAI |
| Michael Kerrisk |
| Add CLOCK_REALTIME_ALARM and CLOCK_BOOTTIME_ALARM |
| |
| prctl.2 |
| Mike Christie [Michal Hocko, Michael Kerrisk, Bart Van Assche] |
| Document PR_SETIO_FLUSHER/GET_IO_FLUSHER |
| |
| setns.2 |
| Michael Kerrisk |
| Document CLONE_NEWTIME |
| |
| statx.2 |
| Eric Biggers |
| Document STATX_ATTR_VERITY |
| |
| unshare.2 |
| Michael Kerrisk |
| Document CLONE_NEWTIME |
| |
| socket.7 |
| Ricardo Biehl Pasquali, Michael Kerrisk |
| Add description of SO_SELECT_ERR_QUEUE |
| Alejandro Colomar [Michael Kerrisk] |
| Document SO_TIMESTAMPNS |
| |
| |
| Global changes |
| -------------- |
| |
| Various pages |
| Michael Kerrisk |
| Remove a few mentions of the ancient "Linux libc" |
| |
| Various pages |
| Michael Kerrisk |
| Global formatting fix: disfavor nonstandard .TP indents |
| In many cases, these don't improve readability, and (when stacked) |
| they sometimes have the side effect of sometimes forcing text |
| to be justified within a narrow column range. |
| |
| Various pages |
| Michael Kerrisk [Christian Brauner] |
| Fix clumsy wording around "nonnegative file descriptors" |
| |
| |
| Changes to individual pages |
| --------------------------- |
| |
| clock_getres.2 |
| Helge Deller [Michael Kerrisk] |
| Consecutive calls for CLOCK_MONOTONIC may return same value |
| Consecutive calls to clock_gettime(CLOCK_MONOTONIC) are guaranteed |
| to return MONOTONIC values, which means that they either return |
| the *SAME* time value like the last call, or a later (higher) time |
| value. |
| Eric Rannaud |
| Dynamic POSIX clock devices can return other errors |
| Michael Kerrisk |
| Improve description of CPU-time clocks |
| Michael Kerrisk |
| Add an example program |
| Michael Kerrisk |
| CLOCK_REALTIME_COARSE is not settable |
| Michael Kerrisk |
| Note that CPU-time clocks are not settable. |
| Explicitly note that CLOCK_PROCESS_CPUTIME_ID and |
| CLOCK_PROCESS_CPUTIME_ID are not settable. |
| Michael Kerrisk |
| Clarify that CLOCK_TAI is nonsettable |
| Michael Kerrisk |
| Clarify that CLOCK_MONOTONIC is system-wide |
| Michael Kerrisk |
| ERRORS: add EINVAL for attempt to set a nonsettable clock |
| Michael Kerrisk |
| Move text in BUGS to NOTES |
| The fact that CLOCK_PROCESS_CPUTIME_ID and |
| CLOCK_PROCESS_CPUTIME_ID are not settable isn't a bug, |
| since POSIX does allow the possibility that these clocks |
| are not settable. |
| Michael Kerrisk |
| SEE ALSO: add time_namespaces(7) |
| |
| clock_nanosleep.2 |
| Michael Kerrisk |
| clock_nanosleep() can also sleep against CLOCK_TAI |
| Michael Kerrisk |
| clock_nanosleep() also supports CLOCK_BOOTTIME |
| Presumably (and from a quick glance at the source code) |
| since Linux 2.6.39, when CLOCK_BOOTTIME was introduced. |
| |
| clock_nanosleep.2 |
| timer_create.2 |
| timerfd_create.2 |
| Michael Kerrisk |
| Add various missing errors |
| Mostly verified by testing and reading the code. |
| |
| There is unfortunately quite a bit of inconsistency across API~s: |
| |
| clock_gettime clock_settime clock_nanosleep timer_create timerfd_create |
| |
| CLOCK_BOOTTIME y n (EINVAL) y y y |
| CLOCK_BOOTTIME_ALARM y n (EINVAL) y [1] y [1] y [1] |
| CLOCK_MONOTONIC y n (EINVAL) y y y |
| CLOCK_MONOTONIC_COARSE y n (EINVAL) n (ENOTSUP) n (ENOTSUP) n (EINVAL) |
| CLOCK_MONOTONIC_RAW y n (EINVAL) n (ENOTSUP) n (ENOTSUP) n (EINVAL) |
| CLOCK_REALTIME y y y y y |
| CLOCK_REALTIME_ALARM y n (EINVAL) y [1] y [1] y [1] |
| CLOCK_REALTIME_COARSE y n (EINVAL) n (ENOTSUP) n (ENOTSUP) n (EINVAL) |
| CLOCK_TAI y n (EINVAL) y y n (EINVAL) |
| CLOCK_PROCESS_CPUTIME_ID y n (EINVAL) y y n (EINVAL) |
| CLOCK_THREAD_CPUTIME_ID y n (EINVAL) n (EINVAL [2]) y n (EINVAL) |
| pthread_getcpuclockid() y n (EINVAL) y y n (EINVAL) |
| |
| [1] The caller must have CAP_WAKE_ALARM, or the error EPERM results. |
| |
| [2] This error is generated in the glibc wrapper. |
| |
| connect.2 |
| Michael Kerrisk [Eric Dumazet] |
| Update the details on AF_UNSPEC |
| Update the details on AF_UNSPEC and circumstances in which |
| socket can be reconnected. |
| |
| dup.2 |
| Michael Kerrisk |
| SEE ALSO: add pidfd_getfd(2) |
| |
| epoll_ctl.2 |
| Michael Kerrisk |
| Various minor additions and clarifications |
| |
| epoll_wait.2 |
| Michael Kerrisk |
| A few minor additions and rewrites |
| |
| execve.2 |
| Michael Kerrisk |
| Add a subhead for the discussion of effect on process attributes |
| Michael Kerrisk |
| Explicitly note that argv[argc] == NULL in the new program |
| Michael Kerrisk |
| ERRORS: ENOENT does not occur for missing shared libraries |
| See http://sourceware.org/bugzilla/show_bug.cgi?id=12241. |
| |
| _exit.2 |
| Michael Kerrisk |
| Clarify that raw _exit() system call terminates only the calling thread |
| |
| inotify_add_watch.2 |
| Michael Kerrisk |
| EXAMPLE: add reference to example in inotify(7) |
| |
| io_submit.2 |
| Julia Suvorova |
| Add IOCB_CMD_POLL opcode |
| |
| lseek.2 |
| Michael Kerrisk |
| ERRORS: ENXIO can also occur SEEK_DATA in middle of hole at end of file |
| |
| madvise.2 |
| Michael Kerrisk [Andrea Arcangeli] |
| Incorporate some (ancient) comments about MADV_HUGEPAGE |
| Back in 2011, a mail from Andrea Arcangeli noted some details |
| that I never got round to incorporating into the manual page. |
| |
| mmap.2 |
| Michael Kerrisk |
| Add a subhead for the 'flags' argument |
| Michael Kerrisk |
| Move some text hidden at the end of DESCRIPTION to NOTES |
| |
| msgctl.2 |
| Michael Kerrisk |
| Add information on permission bits (based on sysvipc(7) text) |
| Michael Kerrisk |
| Copy information on 'msqid_ds' fields from sysvipc(7) |
| |
| open.2 |
| Michael Kerrisk |
| Clarify that O_NOFOLLOW is relevant (only) for basename of 'pathname' |
| Aleksa Sarai |
| Add references to new openat2(2) page |
| Michael Kerrisk |
| Note EINVAL error for invalid character in basename of 'pathname' |
| |
| pidfd_open.2 |
| Michael Kerrisk |
| Mention pidfd_getfd(2) |
| |
| poll.2 |
| Michael Kerrisk |
| Add an example program |
| Michael Kerrisk |
| Mention epoll(7) in the introductory paragraph |
| Michael Kerrisk |
| Improve description of EFAULT error |
| Michael Kerrisk |
| Fix description of ENOMEM error |
| |
| select_tut.2 |
| Michael Kerrisk |
| Adjust header file includes in example |
| Employ <sys/select.h>, rather than the historical header files. |
| |
| semctl.2 |
| Michael Kerrisk |
| Copy information on 'semid_ds' fields from sysvipc(7) |
| Michael Kerrisk |
| Add a reference to the example in shmop(2) |
| Michael Kerrisk |
| Add information on permission bits (based on sysvipc(7) text) |
| |
| semget.2 |
| Michael Kerrisk |
| EXAMPLE: add an example program |
| |
| semop.2 |
| Michael Kerrisk |
| Add a reference to the semop(2) example in shmop(2) |
| |
| shmctl.2 |
| Michael Kerrisk |
| Add information on permission bits (based on sysvipc(7) text) |
| Michael Kerrisk |
| Note that execute permission is not needed for shmat() SHM_EXEC |
| Michael Kerrisk |
| Copy information on 'shmid_ds' fields from sysvipc(7) |
| Michael Kerrisk |
| Some small improvements to the description of the 'shmid_ds' structure |
| |
| shmget.2 |
| Michael Kerrisk |
| Add a reference to the example in shmop(2) |
| |
| shmop.2 |
| Michael Kerrisk |
| EXAMPLE: add a pair of example programs |
| Add example programs demonstrating usage of shmget(2), shmat(2), |
| semget(2), semctl(2), and semop(2). |
| |
| sigaction.2 |
| signal.7 |
| Zack Weinberg |
| Document kernel bugs in delivery of signals from CPU exceptions |
| |
| stat.2 |
| Michael Kerrisk |
| Clarify definitions of timestamp fields |
| In particular, make it clear that atime and mtime relate to the |
| file *data*. |
| |
| syscalls.2 |
| Michael Kerrisk |
| Add new Linux 5.6 system calls |
| Michael Kerrisk |
| Note that the 5.x series followed 4.20 |
| |
| timer_create.2 |
| Michael Kerrisk |
| timer_create(2) also supports CLOCK_TAI |
| Michael Kerrisk |
| Mention clock_getres(2) for further details on the various clocks |
| |
| timerfd_create.2 |
| Michael Kerrisk [Thomas Gleixner] |
| Note a case where timerfd_settime() can fail with ECANCELED |
| Michael Kerrisk [devi R.K, Thomas Gleixner] |
| Negative changes to CLOCK_REALTIME may cause read() to return 0 |
| Michael Kerrisk |
| Rework text for EINVAL for invalid clock ID |
| Michael Kerrisk |
| Refer reader to clock_getres(2) for further details on the clocks |
| |
| unshare.2 |
| Michael Kerrisk |
| Add CLONE_NEWCGROUP and CLONE_NEWTIME to example program |
| |
| exit.3 |
| Michael Kerrisk [Walter Harms] |
| Small improvement to the discussion of 'status' argument |
| |
| ftok.3 |
| Michael Kerrisk |
| EXAMPLE: add a reference to the example in semget(2) |
| |
| getifaddrs.3 |
| Michael Kerrisk [Michael Galassi] |
| EXAMPLE: remove unneeded loop variable |
| |
| nl_langinfo.3 |
| Eugene Syromyatnikov |
| Document era-related locale elements |
| Eugene Syromyatnikov |
| Add information about AM/PM time format locale elements |
| Eugene Syromyatnikov |
| Mention the respective strftime(3) conversion specifications |
| |
| sem_init.3 |
| Michael Kerrisk |
| Add references to example code in shm_open(3) and sem_wait(3) |
| |
| sem_post.3 |
| Michael Kerrisk |
| Add a reference to code example code in shm_open(3) |
| |
| shm_open.3 |
| Michael Kerrisk |
| EXAMPLE: add some example programs |
| |
| strcmp.3 |
| Michael Kerrisk |
| Add an example program |
| Michael Kerrisk [Andrew Micallef, Walter Harms] |
| Rework text describing return value to be clearer |
| Michael Kerrisk |
| Note that the comparison is done using unsigned char |
| Michael Kerrisk |
| SEE ALSO: add ascii(7) |
| |
| strftime.3 |
| Eugene Syromyatnikov [Michael Kerrisk] |
| Refer to the relevant nl_langinfo(3) items |
| Eugene Syromyatnikov |
| Expand %E and %O description |
| Eugene Syromyatnikov |
| Consistently document fall-back format string |
| |
| proc.5 |
| Mike Frysinger |
| Clarify /proc/[pid]/cmdline mutability |
| |
| cgroups.7 |
| Michael Kerrisk |
| Update list of cgroups v2 controllers |
| Update the list of cgroups v2 controllers (several controllers |
| were missing). |
| Michael Kerrisk |
| Add a subsection on cgroup v2 mount options and include 'nsdelegate' |
| Michael Kerrisk |
| Document the cgroups v2 'memory_localevents' mount option |
| Michael Kerrisk |
| SEE ALSO: add Documentation/admin-guide/cgroup-v2.rst |
| |
| namespaces.7 |
| Michael Kerrisk |
| Add time namespaces information |
| Michael Kerrisk |
| Eliminate some superfluous info from display of /proc/PID/ns links |
| |
| path_resolution.7 |
| Aleksa Sarai |
| Update to mention openat2(2) features |
| |
| socket.7 |
| Michael Kerrisk |
| Note SCM message types for SO_TIMESTAMP and SO_TIMESTAMPNS |
| |
| tcp.7 |
| Michael Kerrisk |
| SEE ALSO: mention Documentation/networking/ip-sysctl.txt |
| |
| time.7 |
| Michael Kerrisk |
| Add small subsection on clocks and time namespaces |
| |
| unix.7 |
| Heinrich Schuchardt |
| Correct example |
| |
| vsock.7 |
| Stefano Garzarella [Jorgen Hansen, Stefan Hajnoczi] |
| Add VMADDR_CID_LOCAL description |
