path: root/po/cs/man2/sigreturn.2.po

# Czech translation of manpages
# This file is distributed under the same license as the manpages-l10n package.
# Copyright © of this file:
# Marek Kubita <Kubitovi@mbox.lantanet.cz>, 2001.
# Pavel Heimlich <tropikhajma@gmail.com>, 2009.
msgid ""
msgstr ""
"Project-Id-Version: manpages-l10n\n"
"POT-Creation-Date: 2024-06-01 06:22+0200\n"
"PO-Revision-Date: 2022-07-22 12:55+0200\n"
"Last-Translator: Pavel Heimlich <tropikhajma@gmail.com>\n"
"Language-Team: Czech <translation-team-cs@lists.sourceforge.net>\n"
"Language: cs\n"
"MIME-Version: 1.0\n"
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"X-Generator: Lokalize 20.08.2\n"
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#. type: TH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "sigreturn"
msgstr "sigreturn"

#. type: TH
#: archlinux debian-unstable opensuse-tumbleweed
#, no-wrap
msgid "2024-05-02"
msgstr "2. května 2024"

#. type: TH
#: archlinux debian-unstable
#, no-wrap
msgid "Linux man-pages 6.8"
msgstr "Linux man-pages 6.8"

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "NAME"
msgstr "JMÉNO"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"sigreturn, rt_sigreturn - return from signal handler and cleanup stack frame"
msgstr "sigreturn, rt_sigreturn - návrat z obsluhy signálu a úklid zásobníku"

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "LIBRARY"
msgstr "KNIHOVNA"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Standard C library (I<libc>, I<-lc>)"
msgstr "Standardní knihovna C (I<libc>, I<-lc>)"

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "SYNOPSIS"
msgstr "POUŽITÍ"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<int sigreturn(...);>\n"
msgstr "B<int sigreturn(...);>\n"

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "DESCRIPTION"
msgstr "POPIS"

#.  See arch/x86/kernel/signal.c::__setup_frame() [in Linux 3.17 source code]
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"If the Linux kernel determines that an unblocked signal is pending for a "
"process, then, at the next transition back to user mode in that process (e."
"g., upon return from a system call or when the process is rescheduled onto "
"the CPU), it creates a new frame on the user-space stack where it saves "
"various pieces of process context (processor status word, registers, signal "
"mask, and signal stack settings)."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The kernel also arranges that, during the transition back to user mode, the "
"signal handler is called, and that, upon return from the handler, control "
"passes to a piece of user-space code commonly called the \"signal trampoline"
"\".  The signal trampoline code in turn calls B<sigreturn>()."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, fuzzy
msgid ""
"This B<sigreturn>()  call undoes everything that was done\\[em]changing the "
"process's signal mask, switching signal stacks (see "
"B<sigaltstack>(2))\\[em]in order to invoke the signal handler.  Using the "
"information that was earlier saved on the user-space stack B<sigreturn>()  "
"restores the process's signal mask, switches stacks, and restores the "
"process's context (processor flags and registers, including the stack "
"pointer and instruction pointer), so that the process resumes execution at "
"the point where it was interrupted by the signal."
msgstr ""
"Toto volání B<sigreturn>() vrátí zásobník do původního stavu;obnoví masku "
"signálů, přehodí zásobníky a znovu nastaví kontext procesu (registry, flagy "
"procesoru), takže proces může pokračovat v místě, kde byl přerušen signálem."

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "RETURN VALUE"
msgstr "NÁVRATOVÉ HODNOTY"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "B<sigreturn>()  never returns."
msgstr "Volání funkce B<sigreturn>() se nikdy nevrací."

#. type: SH
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "VERSIONS"
msgstr "VERZE"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Many UNIX-type systems have a B<sigreturn>()  system call or near "
"equivalent.  However, this call is not specified in POSIX, and details of "
"its behavior vary across systems."
msgstr ""

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "STANDARDS"
msgstr "STANDARDY"

#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
msgid "None."
msgstr ""

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "NOTES"
msgstr "POZNÁMKY"

#.  See sysdeps/unix/sysv/linux/sigreturn.c and
#.  signal/sigreturn.c in the glibc source
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"B<sigreturn>()  exists only to allow the implementation of signal handlers.  "
"It should B<never> be called directly.  (Indeed, a simple B<sigreturn>()  "
"wrapper in the GNU C library simply returns -1, with I<errno> set to "
"B<ENOSYS>.)  Details of the arguments (if any) passed to B<sigreturn>()  "
"vary depending on the architecture.  (On some architectures, such as x86-64, "
"B<sigreturn>()  takes no arguments, since all of the information that it "
"requires is available in the stack frame that was previously created by the "
"kernel on the user-space stack.)"
msgstr ""

#.  See, for example, sysdeps/unix/sysv/linux/i386/sigaction.c and
#.  sysdeps/unix/sysv/linux/x86_64/sigaction.c in the glibc (2.20) source.
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Once upon a time, UNIX systems placed the signal trampoline code onto the "
"user stack.  Nowadays, pages of the user stack are protected so as to "
"disallow code execution.  Thus, on contemporary Linux systems, depending on "
"the architecture, the signal trampoline code lives either in the B<vdso>(7)  "
"or in the C library.  In the latter case, the C library's B<sigaction>(2)  "
"wrapper function informs the kernel of the location of the trampoline code "
"by placing its address in the I<sa_restorer> field of the I<sigaction> "
"structure, and sets the B<SA_RESTORER> flag in the I<sa_flags> field."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The saved process context information is placed in a I<ucontext_t> structure "
"(see I<E<lt>sys/ucontext.hE<gt>>).  That structure is visible within the "
"signal handler as the third argument of a handler established via "
"B<sigaction>(2)  with the B<SA_SIGINFO> flag."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"On some other UNIX systems, the operation of the signal trampoline differs a "
"little.  In particular, on some systems, upon transitioning back to user "
"mode, the kernel passes control to the trampoline (rather than the signal "
"handler), and the trampoline code calls the signal handler (and then calls "
"B<sigreturn>()  once the handler returns)."
msgstr ""

#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "C library/kernel differences"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The original Linux system call was named B<sigreturn>().  However, with the "
"addition of real-time signals in Linux 2.2, a new system call, "
"B<rt_sigreturn>()  was added to support an enlarged I<sigset_t> type.  The "
"GNU C library hides these details from us, transparently employing "
"B<rt_sigreturn>()  when the kernel provides it."
msgstr ""

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "SEE ALSO"
msgstr "DALŠÍ INFORMACE"

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"B<kill>(2), B<restart_syscall>(2), B<sigaltstack>(2), B<signal>(2), "
"B<getcontext>(3), B<signal>(7), B<vdso>(7)"
msgstr ""
"B<kill>(2), B<restart_syscall>(2), B<sigaltstack>(2), B<signal>(2), "
"B<getcontext>(3), B<signal>(7), B<vdso>(7)"

#. type: TH
#: debian-bookworm
#, no-wrap
msgid "2023-02-05"
msgstr "5. února 2023"

#. type: TH
#: debian-bookworm
#, no-wrap
msgid "Linux man-pages 6.03"
msgstr "Linux man-pages 6.03"

#. type: TH
#: fedora-40 fedora-rawhide mageia-cauldron
#, no-wrap
msgid "2023-10-31"
msgstr "31. října 2023"

#. type: TH
#: fedora-40 mageia-cauldron
#, no-wrap
msgid "Linux man-pages 6.06"
msgstr "Linux man-pages 6.06"

#. type: TH
#: fedora-rawhide
#, no-wrap
msgid "Linux man-pages 6.7"
msgstr "Linux man-pages 6.7"

#. type: TH
#: opensuse-leap-15-6
#, no-wrap
msgid "2023-03-30"
msgstr "30. března 2023"

#. type: TH
#: opensuse-leap-15-6
#, no-wrap
msgid "Linux man-pages 6.04"
msgstr "Linux man-pages 6.04"

#. type: TH
#: opensuse-tumbleweed
#, fuzzy, no-wrap
#| msgid "Linux man-pages 6.7"
msgid "Linux man-pages (unreleased)"
msgstr "Linux man-pages 6.7"