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==================== Changes in man-pages-3.53 ==================== Released: 2013-07-31, 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: Al Viro <viro@ZenIV.linux.org.uk> Andrey Vagin <avagin@openvz.org> Benjamin Poirier <bpoirier@suse.de> Chris Heath <chris@heathens.co.nz> Chuck Coffing <clc@alum.mit.edu> David Prévot <taffit@debian.org> Denys Vlasenko <dvlasenk@redhat.com> Dmitry V. Levin <ldv@altlinux.org> Felix_Schulte@McAfee.com graud@gmx.com Michael Kerrisk <mtk.manpages@gmail.com> Oleg Nesterov <oleg@redhat.com> Peng Haitao <penght@cn.fujitsu.com> Peter Schiffer <pschiffe@redhat.com> Simon Paillard <spaillard@debian.org> Vince Weaver <vincent.weaver@maine.edu> Apologies if I missed anyone! New and rewritten pages ----------------------- restart_syscall.2 Michael Kerrisk New page for restart_syscall(2) system call Newly documented interfaces in existing pages --------------------------------------------- fchownat.2 Michael Kerrisk Document AT_EMPTY_PATH fstatat.2 Michael Kerrisk Document AT_EMPTY_PATH linkat.2 Michael Kerrisk Document AT_EMPTY_PATH open.2 Michael Kerrisk [Al Viro] Document O_PATH See also https://bugzilla.redhat.com/show_bug.cgi?id=885740 Changes to individual pages --------------------------- clock_nanosleep.2 futex.2 nanosleep.2 poll.2 sigaction.2 sigreturn.2 signal.7 Michael Kerrisk SEE ALSO: add restart_syscall(2) open.2 Michael Kerrisk [Geoffrey Thomas] Remove warning that O_DIRECTORY is only for use with opendir(3) O_DIRECTORY can also be used with, for example, O_PATH. perf_event_open.2 Vince Weaver Improve PERF_SAMPLE_BRANCH_STACK documentation Vince Weaver Fix indentation of the MMAP layout section The indentation of the MMAP layout section wasn't quite right. I think this improves things but I admit I'm not an expert at the low-level indentation directives. Vince Weaver Update PERF_IOC_FLAG_GROUP info It turns out PERF_IOC_FLAG_GROUP was broken from 75f937f24bd9 (in Linux 2.6.31, the initial perf_event release) until 724b6daa1 (Linux 3.4). I've done some extensive kernel source code digging plus running tests of various kernels and I hope the info presented is accurate now. (Patch edited somewhat by mtk.) Vince Weaver Improve sysfs files documentation This improves the documentation of the various perf_event_open()-related sysfs files. ptrace.2 Denys Vlasenko [Oleg Nesterov, Dmitry V. Levin] If SEIZE was used, initial auto-attach stop is EVENT_STOP For every PTRACE_O_TRACEfoo option, mention that old-style SIGSTOP is replaced by PTRACE_EVENT_STOP if PTRACE_SEIZE attach was used. Mention the same thing again in the description of PTRACE_EVENT_STOP. Denys Vlasenko [Oleg Nesterov, Dmitry V. Levin] Mention that PTRACE_PEEK* libc API and kernel API are different Denys Vlasenko [Oleg Nesterov, Dmitry V. Levin] Clarify PTRACE_INTERRUPT, PTRACE_LISTEN, and group-stop behavior readlink.2 Michael Kerrisk Document use of empty 'pathname' argument Michael Kerrisk Change error check in example program from "< 0" to "== -1" setpgid.2 Michael Kerrisk [graud@gmx.com] s/SIGTSTP/SIGTTIN/ when discussing reads from terminal See https://bugzilla.kernel.org/show_bug.cgi?id=60504 clog2.3 Michael Kerrisk Note that these functions are still not present in glibc 2.17 dirfd.3 Peng Haitao ATTRIBUTES: Note function that is thread-safe The function dirfd() is thread safe. div.3 Peng Haitao ATTRIBUTES: Note functions that are thread-safe The functions div(), ldiv(), lldiv() and imaxdiv() are thread safe. fabs.3 Peng Haitao ATTRIBUTES: Note functions that are thread-safe The functions fabs(), fabsf() and fabsl() are thread safe. fdim.3 Peng Haitao ATTRIBUTES: Note functions that are thread-safe The functions fdim(), fdimf() and fdiml() are thread safe. fflush.3 Peng Haitao ATTRIBUTES: Note function that is thread-safe The function fflush() is thread safe. finite.3 Peng Haitao ATTRIBUTES: Note functions that are thread-safe The functions finite(), finitef(), finitel(), isinf(), isinff(), isinfl(), isnan(), isnanf() and isnanl() are thread safe. flockfile.3 Peng Haitao ATTRIBUTES: Note functions that are thread-safe The functions flockfile(), ftrylockfile() and funlockfile() are thread safe. floor.3 Peng Haitao ATTRIBUTES: Note functions that are thread-safe The functions floor(), floorf() and floorl() are thread safe. resolv.conf.5 Simon Paillard Explain how to set empty domain See http://bugs.debian.org/463575 capabilities.7 Michael Kerrisk Add open_by_handle_at(2) under CAP_DAC_READ_SEARCH inotify.7 Michael Kerrisk [Felix_Schulte@McAfee.com] Clarify description of IN_MOVED_FROM and IN_MOVED_TO man-pages.7 Michael Kerrisk DESCRIPTION should note versions for new interface features or behavior udp.7 Benjamin Poirier Add missing #include directive Using the UDP_CORK socket option documented in udp.7 requires including <netinet/udp.h>. ld.so.8 Michael Kerrisk Rework rpath token expansion text Michael Kerrisk Describe $PLATFORM rpath token Michael Kerrisk Describe $LIB rpath token Michael Kerrisk Document LD_BIND_NOT Michael Kerrisk [Simon Paillard] Add reference to pthreads(7) in discussion of LD_ASSUME_KERNEL readlink.2 Chuck Coffing Fix possible race condition in readlink.2 example I noticed that the example in the readlink.2 man pages does error checking for a race condition that would cause the value of the symbolic link to get larger. However, it doesn't handle the opposite case, in which the value gets shorter. (The NULL terminator is always set at the old, longer offset.) This could cause the program to operate on uninitialized data.