2014-11-09 08:23:51 +00:00
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.\" Copyright (C) 2010 Intel Corporation, Author: Andi Kleen
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.\" and Copyright 2014, Vivek Goyal <vgoyal@redhat.com>
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2015-01-28 07:59:59 +00:00
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.\" and Copyright (c) 2015, Michael Kerrisk <mtk.manpages@gmail.com>
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2010-10-31 06:00:21 +00:00
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.\"
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intro.1, _exit.2, access.2, alarm.2, alloc_hugepages.2, arch_prctl.2, bind.2, chdir.2, chmod.2, chown.2, chroot.2, clock_getres.2, clock_nanosleep.2, close.2, connect.2, delete_module.2, dup.2, execve.2, exit_group.2, faccessat.2, fchmodat.2, fchownat.2, fcntl.2, fork.2, fstatat.2, fsync.2, futimesat.2, get_robust_list.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getpagesize.2, getpid.2, getresuid.2, getrlimit.2, getrusage.2, gettid.2, gettimeofday.2, getuid.2, getunwind.2, idle.2, init_module.2, intro.2, iopl.2, kcmp.2, kexec_load.2, kill.2, link.2, linkat.2, llseek.2, lookup_dcookie.2, madvise.2, mincore.2, mkdirat.2, mknodat.2, mmap.2, mmap2.2, mount.2, mprotect.2, mq_getsetattr.2, msgctl.2, msgget.2, msgop.2, msync.2, nice.2, open.2, openat.2, pause.2, perfmonctl.2, personality.2, pipe.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, quotactl.2, read.2, readahead.2, readdir.2, readlinkat.2, readv.2, reboot.2, recvmmsg.2, remap_file_pages.2, rename.2, renameat.2, rmdir.2, rt_sigqueueinfo.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, sendmmsg.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setresuid.2, setuid.2, setup.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, signal.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, splice.2, stat.2, statfs.2, stime.2, subpage_prot.2, swapon.2, symlink.2, symlinkat.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysfs.2, syslog.2, tee.2, time.2, timer_create.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, times.2, tkill.2, umask.2, umount.2, uname.2, unlink.2, unlinkat.2, uselib.2, ustat.2, utime.2, utimensat.2, vfork.2, vhangup.2, vm86.2, vmsplice.2, wait.2, wait4.2, write.2, CPU_SET.3, INFINITY.3, abort.3, abs.3, acos.3, acosh.3, adjtime.3, aio_init.3, asin.3, asinh.3, asprintf.3, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atexit.3, atof.3, atoi.3, basename.3, bcmp.3, bcopy.3, bindresvport.3, bsd_signal.3, bsearch.3, bstring.3, byteorder.3, bzero.3, catgets.3, catopen.3, cbrt.3, ceil.3, clearenv.3, clock.3, clock_getcpuclockid.3, closedir.3, confstr.3, copysign.3, cos.3, cosh.3, ctermid.3, ctime.3, difftime.3, dirfd.3, div.3, dl_iterate_phdr.3, dprintf.3, drand48.3, drand48_r.3, dysize.3, ecvt.3, ecvt_r.3, end.3, endian.3, erf.3, erfc.3, ether_aton.3, euidaccess.3, exit.3, exp.3, exp10.3, exp2.3, expm1.3, fabs.3, fcloseall.3, fexecve.3, ffs.3, fgetgrent.3, fgetpwent.3, finite.3, flockfile.3, floor.3, fmod.3, fnmatch.3, fopencookie.3, fpathconf.3, fpurge.3, frexp.3, fseeko.3, ftok.3, futimes.3, gcvt.3, get_nprocs_conf.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcontext.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getenv.3, getfsent.3, getgrent.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getifaddrs.3, getipnodebyname.3, getline.3, getlogin.3, getmntent.3, getnetent.3, getnetent_r.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwnam.3, getrpcent_r.3, gets.3, getservent.3, getservent_r.3, getumask.3, getusershell.3, getutmp.3, getw.3, glob.3, gnu_get_libc_version.3, gsignal.3, hypot.3, if_nameindex.3, if_nametoindex.3, ilogb.3, index.3, inet.3, inet_ntop.3, inet_pton.3, infnan.3, initgroups.3, insque.3, intro.3, isalpha.3, isatty.3, j0.3, ldexp.3, localeconv.3, log.3, log10.3, log1p.3, log2.3, logb.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, makedev.3, mallinfo.3, malloc.3, malloc_get_state.3, malloc_info.3, malloc_stats.3, malloc_trim.3, malloc_usable_size.3, mallopt.3, matherr.3, mcheck.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, memfrob.3, memmem.3, memmove.3, memset.3, mkdtemp.3, mkfifo.3, mkfifoat.3, mkstemp.3, mktemp.3, modf.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_open.3, mq_receive.3, mq_send.3, mq_unlink.3, mtrace.3, on_exit.3, opendir.3, posix_fallocate.3, posix_memalign.3, posix_openpt.3, pow.3, pow10.3, profil.3, psignal.3, pthread_attr_init.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_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_detach.3, pthread_equal.3, pthread_exit.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_join.3, pthread_kill.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_setschedprio.3, pthread_sigmask.3, pthread_sigqueue.3, pthread_testcancel.3, pthread_tryjoin_np.3, pthread_yield.3, putenv.3, putpwent.3, puts.3, qecvt.3, qsort.3, raise.3, rand.3, random.3, random_r.3, re_comp.3, readdir.3, realpath.3, regex.3, remainder.3, remove.3, resolver.3, rewinddir.3, rint.3, round.3, scalb.3, scalbln.3, scandir.3, sched_getcpu.3, seekdir.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_post.3, sem_unlink.3, sem_wait.3, setenv.3, setlocale.3, setlogmask.3, shm_open.3, siginterrupt.3, sigpause.3, sigqueue.3, sigset.3, sigsetops.3, sigvec.3, sigwait.3, sin.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdio_ext.3, stpcpy.3, strcasecmp.3, strcat.3, strchr.3, strcmp.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfry.3, strftime.3, string.3, strlen.3, strpbrk.3, strptime.3, strsep.3, strsignal.3, strspn.3, strstr.3, strtok.3, strtol.3, strtoul.3, strverscmp.3, strxfrm.3, swab.3, sysconf.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, tcgetpgrp.3, tcgetsid.3, telldir.3, tempnam.3, timegm.3, timeradd.3, tmpfile.3, tmpnam.3, toascii.3, toupper.3, trunc.3, tsearch.3, ttyslot.3, tzset.3, ulimit.3, undocumented.3, unlocked_stdio.3, usleep.3, y0.3, cpuid.4, full.4, initrd.4, mouse.4, msr.4, sd.4, st.4, acct.5, core.5, services.5, slabinfo.5, aio.7, capabilities.7, credentials.7, feature_test_macros.7, hier.7, inotify.7, libc.7, locale.7, man-pages.7, man.7, math_error.7, mq_overview.7, numa.7, path_resolution.7, pipe.7, pthreads.7, pty.7, rtld-audit.7, sem_overview.7, shm_overview.7, sigevent.7, signal.7, suffixes.7, svipc.7, termio.7, time.7, udplite.7, units.7, uri.7, sln.8: s/LICENSE_START(verbatim)/LICENSE_START(VERBATIM)/
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-10 09:29:01 +00:00
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.\" %%%LICENSE_START(VERBATIM)
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2010-10-31 06:00:21 +00:00
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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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intro.1, _exit.2, access.2, alarm.2, alloc_hugepages.2, arch_prctl.2, bind.2, chdir.2, chmod.2, chown.2, chroot.2, clock_getres.2, clock_nanosleep.2, close.2, connect.2, delete_module.2, dup.2, execve.2, exit_group.2, faccessat.2, fchmodat.2, fchownat.2, fcntl.2, fork.2, fstatat.2, fsync.2, futimesat.2, get_robust_list.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getpagesize.2, getpid.2, getresuid.2, getrlimit.2, getrusage.2, gettid.2, gettimeofday.2, getuid.2, getunwind.2, idle.2, init_module.2, intro.2, iopl.2, kcmp.2, kexec_load.2, kill.2, link.2, linkat.2, llseek.2, lookup_dcookie.2, madvise.2, mincore.2, mkdirat.2, mknodat.2, mmap.2, mmap2.2, mount.2, mprotect.2, mq_getsetattr.2, msgctl.2, msgget.2, msgop.2, msync.2, nice.2, open.2, openat.2, pause.2, perfmonctl.2, personality.2, pipe.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, quotactl.2, read.2, readahead.2, readdir.2, readlinkat.2, readv.2, reboot.2, recvmmsg.2, remap_file_pages.2, rename.2, renameat.2, rmdir.2, rt_sigqueueinfo.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, sendmmsg.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setresuid.2, setuid.2, setup.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, signal.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, splice.2, stat.2, statfs.2, stime.2, subpage_prot.2, swapon.2, symlink.2, symlinkat.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysfs.2, syslog.2, tee.2, time.2, timer_create.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, times.2, tkill.2, umask.2, umount.2, uname.2, unlink.2, unlinkat.2, uselib.2, ustat.2, utime.2, utimensat.2, vfork.2, vhangup.2, vm86.2, vmsplice.2, wait.2, wait4.2, write.2, CPU_SET.3, INFINITY.3, abort.3, abs.3, acos.3, acosh.3, adjtime.3, aio_init.3, asin.3, asinh.3, asprintf.3, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atexit.3, atof.3, atoi.3, basename.3, bcmp.3, bcopy.3, bindresvport.3, bsd_signal.3, bsearch.3, bstring.3, byteorder.3, bzero.3, catgets.3, catopen.3, cbrt.3, ceil.3, clearenv.3, clock.3, clock_getcpuclockid.3, closedir.3, confstr.3, copysign.3, cos.3, cosh.3, ctermid.3, ctime.3, difftime.3, dirfd.3, div.3, dl_iterate_phdr.3, dprintf.3, drand48.3, drand48_r.3, dysize.3, ecvt.3, ecvt_r.3, end.3, endian.3, erf.3, erfc.3, ether_aton.3, euidaccess.3, exit.3, exp.3, exp10.3, exp2.3, expm1.3, fabs.3, fcloseall.3, fexecve.3, ffs.3, fgetgrent.3, fgetpwent.3, finite.3, flockfile.3, floor.3, fmod.3, fnmatch.3, fopencookie.3, fpathconf.3, fpurge.3, frexp.3, fseeko.3, ftok.3, futimes.3, gcvt.3, get_nprocs_conf.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcontext.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getenv.3, getfsent.3, getgrent.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getifaddrs.3, getipnodebyname.3, getline.3, getlogin.3, getmntent.3, getnetent.3, getnetent_r.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwnam.3, getrpcent_r.3, gets.3, getservent.3, getservent_r.3, getumask.3, getusershell.3, getutmp.3, getw.3, glob.3, gnu_get_libc_version.3, gsignal.3, hypot.3, if_nameindex.3, if_nametoindex.3, ilogb.3, index.3, inet.3, inet_ntop.3, inet_pton.3, infnan.3, initgroups.3, insque.3, intro.3, isalpha.3, isatty.3, j0.3, ldexp.3, localeconv.3, log.3, log10.3, log1p.3, log2.3, logb.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, makedev.3, mallinfo.3, malloc.3, malloc_get_state.3, malloc_info.3, malloc_stats.3, malloc_trim.3, malloc_usable_size.3, mallopt.3, matherr.3, mcheck.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, memfrob.3, memmem.3, memmove.3, memset.3, mkdtemp.3, mkfifo.3, mkfifoat.3, mkstemp.3, mktemp.3, modf.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_open.3, mq_receive.3, mq_send.3, mq_unlink.3, mtrace.3, on_exit.3, opendir.3, posix_fallocate.3, posix_memalign.3, posix_openpt.3, pow.3, pow10.3, profil.3, psignal.3, pthread_attr_init.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_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_detach.3, pthread_equal.3, pthread_exit.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_join.3, pthread_kill.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_setschedprio.3, pthread_sigmask.3, pthread_sigqueue.3, pthread_testcancel.3, pthread_tryjoin_np.3, pthread_yield.3, putenv.3, putpwent.3, puts.3, qecvt.3, qsort.3, raise.3, rand.3, random.3, random_r.3, re_comp.3, readdir.3, realpath.3, regex.3, remainder.3, remove.3, resolver.3, rewinddir.3, rint.3, round.3, scalb.3, scalbln.3, scandir.3, sched_getcpu.3, seekdir.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_post.3, sem_unlink.3, sem_wait.3, setenv.3, setlocale.3, setlogmask.3, shm_open.3, siginterrupt.3, sigpause.3, sigqueue.3, sigset.3, sigsetops.3, sigvec.3, sigwait.3, sin.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdio_ext.3, stpcpy.3, strcasecmp.3, strcat.3, strchr.3, strcmp.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfry.3, strftime.3, string.3, strlen.3, strpbrk.3, strptime.3, strsep.3, strsignal.3, strspn.3, strstr.3, strtok.3, strtol.3, strtoul.3, strverscmp.3, strxfrm.3, swab.3, sysconf.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, tcgetpgrp.3, tcgetsid.3, telldir.3, tempnam.3, timegm.3, timeradd.3, tmpfile.3, tmpnam.3, toascii.3, toupper.3, trunc.3, tsearch.3, ttyslot.3, tzset.3, ulimit.3, undocumented.3, unlocked_stdio.3, usleep.3, y0.3, cpuid.4, full.4, initrd.4, mouse.4, msr.4, sd.4, st.4, acct.5, core.5, services.5, slabinfo.5, aio.7, capabilities.7, credentials.7, feature_test_macros.7, hier.7, inotify.7, libc.7, locale.7, man-pages.7, man.7, math_error.7, mq_overview.7, numa.7, path_resolution.7, pipe.7, pthreads.7, pty.7, rtld-audit.7, sem_overview.7, shm_overview.7, sigevent.7, signal.7, suffixes.7, svipc.7, termio.7, time.7, udplite.7, units.7, uri.7, sln.8: Global fix: Add LICENSE_START(verbatim)
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-10 09:28:40 +00:00
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.\" %%%LICENSE_END
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ldd.1, arch_prctl.2, faccessat.2, fchmodat.2, fchownat.2, flock.2, futimesat.2, getcpu.2, getdents.2, getitimer.2, getpid.2, getresuid.2, getunwind.2, kexec_load.2, mkdirat.2, mknodat.2, openat.2, outb.2, perfmonctl.2, readlinkat.2, renameat.2, symlinkat.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, unlinkat.2: srcfix
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-12 11:35:04 +00:00
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.\"
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memusage.1, memusagestat.1, pldd.1, accept.2, adjtimex.2, arch_prctl.2, bdflush.2, bpf.2, close.2, epoll_ctl.2, epoll_wait.2, execve.2, execveat.2, fanotify_init.2, fanotify_mark.2, fcntl.2, fsync.2, get_kernel_syms.2, getdomainname.2, getgroups.2, gethostname.2, getrandom.2, getrlimit.2, getrusage.2, getsid.2, getunwind.2, io_getevents.2, ioctl_fat.2, kexec_load.2, killpg.2, listxattr.2, lseek.2, madvise.2, memfd_create.2, mknod.2, mlock.2, modify_ldt.2, msgctl.2, msgget.2, msgop.2, readlink.2, readv.2, reboot.2, recvmmsg.2, rename.2, request_key.2, restart_syscall.2, sched_setaffinity.2, sched_setattr.2, sched_setparam.2, seccomp.2, select_tut.2, semctl.2, semget.2, semop.2, set_thread_area.2, seteuid.2, setgid.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigprocmask.2, stat.2, symlink.2, syscall.2, sysctl.2, unlink.2, bindresvport.3, byteorder.3, dlopen.3, endian.3, error.3, ffs.3, fmemopen.3, getcwd.3, getlogin.3, getnetent.3, getprotoent.3, getservent.3, getumask.3, getutent.3, glob.3, isalpha.3, lio_listio.3, login.3, mbsinit.3, mbstowcs.3, mbtowc.3, mkstemp.3, nextup.3, ntp_gettime.3, posix_fallocate.3, posix_spawn.3, pthread_join.3, pthread_rwlockattr_setkind_np.3, random.3, rcmd.3, realpath.3, resolver.3, setjmp.3, setnetgrent.3, sigvec.3, strerror.3, strverscmp.3, system.3, toupper.3, towlower.3, towupper.3, wcstombs.3, wordexp.3, cciss.4, loop.4, mouse.4, random.4, core.5, group.5, hosts.5, resolv.conf.5, ascii.7, environ.7, epoll.7, glob.7, ip.7, mq_overview.7, packet.7, pipe.7, raw.7, sched.7, signal.7, socket.7, symlink.7, ld.so.8, sln.8: tstamp
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-08 10:53:47 +00:00
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.TH KEXEC_LOAD 2 2016-10-08 "Linux" "Linux Programmer's Manual"
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2010-10-31 05:56:47 +00:00
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.SH NAME
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2014-10-31 13:49:56 +00:00
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kexec_load, kexec_file_load \- load a new kernel for later execution
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2010-10-31 05:56:47 +00:00
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.SH SYNOPSIS
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2014-11-01 05:23:20 +00:00
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.nf
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2010-11-04 06:16:30 +00:00
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.B #include <linux/kexec.h>
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2014-10-31 13:49:56 +00:00
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|
2010-10-31 05:56:47 +00:00
|
|
|
.BI "long kexec_load(unsigned long " entry ", unsigned long " nr_segments ","
|
2010-10-31 06:06:49 +00:00
|
|
|
.BI " struct kexec_segment *" segments \
|
|
|
|
", unsigned long " flags ");"
|
2014-10-31 13:49:56 +00:00
|
|
|
|
2015-01-07 16:15:29 +00:00
|
|
|
.BI "long kexec_file_load(int " kernel_fd ", int " initrd_fd ","
|
2014-10-31 13:49:56 +00:00
|
|
|
.br
|
|
|
|
.BI " unsigned long " cmdline_len \
|
|
|
|
", const char *" cmdline ","
|
|
|
|
.BI " unsigned long " flags ");"
|
get_robust_list.2, get_thread_area.2, getcpu.2, getdents.2, gettid.2, io_cancel.2, io_destroy.2, io_getevents.2, io_setup.2, io_submit.2, ioprio_set.2, kexec_load.2, llseek.2, modify_ldt.2, mq_getsetattr.2, pivot_root.2, readdir.2, rt_sigqueueinfo.2, set_thread_area.2, sgetmask.2, spu_create.2, spu_run.2, subpage_prot.2, sysctl.2, tkill.2: Add note to SYNOPSIS that there is no glibc wrapper for system call
Reduce the chance that the reader may be misled into thinking
that there is a wrapper function for this system call by noting
explicitly in the SYNOPSIS that there is no glibc wrapper and
pointing the reader to NOTES for further details.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2012-07-13 06:48:20 +00:00
|
|
|
|
2014-11-01 05:23:20 +00:00
|
|
|
.fi
|
get_robust_list.2, get_thread_area.2, getcpu.2, getdents.2, gettid.2, io_cancel.2, io_destroy.2, io_getevents.2, io_setup.2, io_submit.2, ioprio_set.2, kexec_load.2, llseek.2, modify_ldt.2, mq_getsetattr.2, pivot_root.2, readdir.2, rt_sigqueueinfo.2, set_thread_area.2, sgetmask.2, spu_create.2, spu_run.2, subpage_prot.2, sysctl.2, tkill.2: Add note to SYNOPSIS that there is no glibc wrapper for system call
Reduce the chance that the reader may be misled into thinking
that there is a wrapper function for this system call by noting
explicitly in the SYNOPSIS that there is no glibc wrapper and
pointing the reader to NOTES for further details.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2012-07-13 06:48:20 +00:00
|
|
|
.IR Note :
|
2014-10-31 13:49:56 +00:00
|
|
|
There are no glibc wrappers for these system calls; see NOTES.
|
2010-10-31 05:56:47 +00:00
|
|
|
.SH DESCRIPTION
|
2010-10-31 06:06:49 +00:00
|
|
|
The
|
|
|
|
.BR kexec_load ()
|
|
|
|
system call loads a new kernel that can be executed later by
|
2010-11-04 06:40:06 +00:00
|
|
|
.BR reboot (2).
|
2010-10-31 06:06:49 +00:00
|
|
|
.PP
|
|
|
|
The
|
2010-10-31 05:56:47 +00:00
|
|
|
.I flags
|
2014-06-06 05:18:24 +00:00
|
|
|
argument is a bit mask that controls the operation of the call.
|
2010-10-31 06:06:49 +00:00
|
|
|
The following values can be specified in
|
|
|
|
.IR flags :
|
|
|
|
.TP
|
2010-11-04 05:47:18 +00:00
|
|
|
.BR KEXEC_ON_CRASH " (since Linux 2.6.13)"
|
2010-10-31 06:06:49 +00:00
|
|
|
Execute the new kernel automatically on a system crash.
|
2015-01-16 13:27:52 +00:00
|
|
|
This "crash kernel" is loaded into an area of reserved memory that
|
|
|
|
is determined at boot time using the
|
2016-02-02 20:50:45 +00:00
|
|
|
.I crashkernel
|
2015-01-16 13:27:52 +00:00
|
|
|
kernel command-line parameter.
|
|
|
|
The location of this reserved memory is exported to user space via the
|
|
|
|
.I /proc/iomem
|
|
|
|
file, in an entry labeled "Crash kernel".
|
|
|
|
A user-space application can parse this file and prepare a list of
|
|
|
|
segments (see below) that specify this reserved memory as destination.
|
|
|
|
If this flag is specified, the kernel checks that the
|
|
|
|
target segments specified in
|
|
|
|
.I segments
|
|
|
|
fall within the reserved region.
|
2010-10-31 06:06:49 +00:00
|
|
|
.TP
|
2012-07-07 06:22:07 +00:00
|
|
|
.BR KEXEC_PRESERVE_CONTEXT " (since Linux 2.6.27)"
|
2010-10-31 06:06:49 +00:00
|
|
|
Preserve the system hardware and
|
|
|
|
software states before executing the new kernel.
|
|
|
|
This could be used for system suspend.
|
intro.1, _syscall.2, access.2, arch_prctl.2, cacheflush.2, chown.2, clock_getres.2, clone.2, create_module.2, fcntl.2, flock.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getpriority.2, getrlimit.2, getrusage.2, ioprio_set.2, kexec_load.2, madvise.2, mbind.2, migrate_pages.2, mknod.2, mmap.2, mount.2, move_pages.2, mprotect.2, open.2, pause.2, pciconfig_read.2, perf_event_open.2, prctl.2, ptrace.2, query_module.2, read.2, reboot.2, recv.2, s390_runtime_instr.2, sched_setscheduler.2, select_tut.2, send.2, set_mempolicy.2, setfsgid.2, setfsuid.2, sigaction.2, spu_create.2, spu_run.2, stime.2, swapon.2, syslog.2, timer_create.2, timer_getoverrun.2, times.2, tkill.2, umount.2, unimplemented.2, ustat.2, vm86.2, wait.2, abs.3, aio_read.3, aio_write.3, bsd_signal.3, catgets.3, clearenv.3, cmsg.3, dbopen.3, dirfd.3, dlopen.3, exec.3, fenv.3, ferror.3, fmemopen.3, fnmatch.3, fopen.3, futimes.3, getaddrinfo.3, getifaddrs.3, getipnodebyname.3, hsearch.3, if_nameindex.3, inet_pton.3, mblen.3, mbrlen.3, mbsrtowcs.3, mbtowc.3, mcheck.3, memfrob.3, mq_notify.3, netlink.3, posix_memalign.3, printf.3, pthread_attr_setscope.3, pthread_cleanup_push.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setcancelstate.3, pthread_setconcurrency.3, raise.3, resolver.3, rpc.3, rtime.3, rtnetlink.3, scanf.3, setbuf.3, setnetgrent.3, shm_open.3, sigpause.3, sigset.3, sigwait.3, sockatmark.3, strcasecmp.3, strcmp.3, strdup.3, strftime.3, strptime.3, strsignal.3, strverscmp.3, sysv_signal.3, termios.3, wcrtomb.3, wcsnlen.3, wcsnrtombs.3, wcsrtombs.3, wctomb.3, wprintf.3, console_codes.4, cpuid.4, msr.4, rtc.4, sk98lin.4, st.4, tty.4, charmap.5, core.5, elf.5, hosts.equiv.5, proc.5, resolv.conf.5, services.5, slabinfo.5, arp.7, bootparam.7, capabilities.7, charsets.7, cpuset.7, ddp.7, epoll.7, feature_test_macros.7, futex.7, hier.7, icmp.7, inotify.7, ip.7, ipv6.7, man-pages.7, mdoc.7, mdoc.samples.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, posixoptions.7, pthreads.7, raw.7, rtld-audit.7, rtnetlink.7, sem_overview.7, sigevent.7, socket.7, spufs.7, tcp.7, udp.7, unicode.7, uri.7, utf-8.7, intro.8, ldconfig.8, sync.8: Global fix: fix placement of word "only"
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-31 08:53:00 +00:00
|
|
|
This flag is available only if the kernel was configured with
|
2010-10-31 06:06:49 +00:00
|
|
|
.BR CONFIG_KEXEC_JUMP ,
|
intro.1, _syscall.2, access.2, arch_prctl.2, cacheflush.2, chown.2, clock_getres.2, clone.2, create_module.2, fcntl.2, flock.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getpriority.2, getrlimit.2, getrusage.2, ioprio_set.2, kexec_load.2, madvise.2, mbind.2, migrate_pages.2, mknod.2, mmap.2, mount.2, move_pages.2, mprotect.2, open.2, pause.2, pciconfig_read.2, perf_event_open.2, prctl.2, ptrace.2, query_module.2, read.2, reboot.2, recv.2, s390_runtime_instr.2, sched_setscheduler.2, select_tut.2, send.2, set_mempolicy.2, setfsgid.2, setfsuid.2, sigaction.2, spu_create.2, spu_run.2, stime.2, swapon.2, syslog.2, timer_create.2, timer_getoverrun.2, times.2, tkill.2, umount.2, unimplemented.2, ustat.2, vm86.2, wait.2, abs.3, aio_read.3, aio_write.3, bsd_signal.3, catgets.3, clearenv.3, cmsg.3, dbopen.3, dirfd.3, dlopen.3, exec.3, fenv.3, ferror.3, fmemopen.3, fnmatch.3, fopen.3, futimes.3, getaddrinfo.3, getifaddrs.3, getipnodebyname.3, hsearch.3, if_nameindex.3, inet_pton.3, mblen.3, mbrlen.3, mbsrtowcs.3, mbtowc.3, mcheck.3, memfrob.3, mq_notify.3, netlink.3, posix_memalign.3, printf.3, pthread_attr_setscope.3, pthread_cleanup_push.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setcancelstate.3, pthread_setconcurrency.3, raise.3, resolver.3, rpc.3, rtime.3, rtnetlink.3, scanf.3, setbuf.3, setnetgrent.3, shm_open.3, sigpause.3, sigset.3, sigwait.3, sockatmark.3, strcasecmp.3, strcmp.3, strdup.3, strftime.3, strptime.3, strsignal.3, strverscmp.3, sysv_signal.3, termios.3, wcrtomb.3, wcsnlen.3, wcsnrtombs.3, wcsrtombs.3, wctomb.3, wprintf.3, console_codes.4, cpuid.4, msr.4, rtc.4, sk98lin.4, st.4, tty.4, charmap.5, core.5, elf.5, hosts.equiv.5, proc.5, resolv.conf.5, services.5, slabinfo.5, arp.7, bootparam.7, capabilities.7, charsets.7, cpuset.7, ddp.7, epoll.7, feature_test_macros.7, futex.7, hier.7, icmp.7, inotify.7, ip.7, ipv6.7, man-pages.7, mdoc.7, mdoc.samples.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, posixoptions.7, pthreads.7, raw.7, rtld-audit.7, rtnetlink.7, sem_overview.7, sigevent.7, socket.7, spufs.7, tcp.7, udp.7, unicode.7, uri.7, utf-8.7, intro.8, ldconfig.8, sync.8: Global fix: fix placement of word "only"
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-31 08:53:00 +00:00
|
|
|
and is effective only if
|
2010-10-31 06:06:49 +00:00
|
|
|
.I nr_segments
|
|
|
|
is greater than 0.
|
|
|
|
.PP
|
2014-06-06 05:14:07 +00:00
|
|
|
The high-order bits (corresponding to the mask 0xffff0000) of
|
2010-10-31 05:56:47 +00:00
|
|
|
.I flags
|
2010-10-31 06:06:49 +00:00
|
|
|
contain the architecture of the to-be-executed kernel.
|
|
|
|
Specify (OR) the constant
|
|
|
|
.B KEXEC_ARCH_DEFAULT
|
|
|
|
to use the current architecture,
|
|
|
|
or one of the following architecture constants
|
|
|
|
.BR KEXEC_ARCH_386 ,
|
2014-06-06 05:28:49 +00:00
|
|
|
.BR KEXEC_ARCH_68K ,
|
2010-10-31 06:06:49 +00:00
|
|
|
.BR KEXEC_ARCH_X86_64 ,
|
|
|
|
.BR KEXEC_ARCH_PPC ,
|
|
|
|
.BR KEXEC_ARCH_PPC64 ,
|
|
|
|
.BR KEXEC_ARCH_IA_64 ,
|
|
|
|
.BR KEXEC_ARCH_ARM ,
|
|
|
|
.BR KEXEC_ARCH_S390 ,
|
|
|
|
.BR KEXEC_ARCH_SH ,
|
|
|
|
.BR KEXEC_ARCH_MIPS ,
|
|
|
|
and
|
|
|
|
.BR KEXEC_ARCH_MIPS_LE .
|
2010-10-31 05:56:47 +00:00
|
|
|
The architecture must be executable on the CPU of the system.
|
|
|
|
|
2010-10-31 06:06:49 +00:00
|
|
|
The
|
|
|
|
.I entry
|
2010-10-31 06:16:03 +00:00
|
|
|
argument is the physical entry address in the kernel image.
|
2010-10-31 06:06:49 +00:00
|
|
|
The
|
2010-10-31 05:56:47 +00:00
|
|
|
.I nr_segments
|
2010-10-31 06:06:49 +00:00
|
|
|
argument is the number of segments pointed to by the
|
2010-10-31 05:56:47 +00:00
|
|
|
.I segments
|
2014-06-06 05:25:48 +00:00
|
|
|
pointer;
|
|
|
|
the kernel imposes an (arbitrary) limit of 16 on the number of segments.
|
2010-10-31 06:06:49 +00:00
|
|
|
The
|
|
|
|
.I segments
|
|
|
|
argument is an array of
|
|
|
|
.I kexec_segment
|
2010-10-31 05:56:47 +00:00
|
|
|
structures which define the kernel layout:
|
|
|
|
.in +4n
|
|
|
|
.nf
|
|
|
|
|
|
|
|
struct kexec_segment {
|
2010-10-31 06:06:49 +00:00
|
|
|
void *buf; /* Buffer in user space */
|
|
|
|
size_t bufsz; /* Buffer length in user space */
|
2010-10-31 06:16:03 +00:00
|
|
|
void *mem; /* Physical address of kernel */
|
|
|
|
size_t memsz; /* Physical address length */
|
2010-10-31 05:56:47 +00:00
|
|
|
};
|
|
|
|
.fi
|
|
|
|
.in
|
|
|
|
.PP
|
|
|
|
The kernel image defined by
|
|
|
|
.I segments
|
2015-01-16 13:27:52 +00:00
|
|
|
is copied from the calling process into
|
|
|
|
the kernel either in regular
|
|
|
|
memory or in reserved memory (if
|
|
|
|
.BR KEXEC_ON_CRASH
|
|
|
|
is set).
|
|
|
|
The kernel first performs various sanity checks on the
|
|
|
|
information passed in
|
|
|
|
.IR segments .
|
|
|
|
If these checks pass, the kernel copies the segment data to kernel memory.
|
|
|
|
Each segment specified in
|
|
|
|
.I segments
|
|
|
|
is copied as follows:
|
|
|
|
.IP * 3
|
|
|
|
.I buf
|
|
|
|
and
|
2015-01-28 07:35:19 +00:00
|
|
|
.I bufsz
|
2015-01-16 13:27:52 +00:00
|
|
|
identify a memory region in the caller's virtual address space
|
|
|
|
that is the source of the copy.
|
2015-01-28 07:35:19 +00:00
|
|
|
The value in
|
|
|
|
.I bufsz
|
|
|
|
may not exceed the value in the
|
|
|
|
.I memsz
|
|
|
|
field.
|
2015-01-16 13:27:52 +00:00
|
|
|
.IP *
|
|
|
|
.I mem
|
|
|
|
and
|
|
|
|
.I memsz
|
|
|
|
specify a physical address range that is the target of the copy.
|
2015-01-28 07:35:19 +00:00
|
|
|
The values specified in both fields must be multiples of
|
|
|
|
the system page size.
|
2015-01-16 13:27:52 +00:00
|
|
|
.IP *
|
|
|
|
.I bufsz
|
2015-01-28 07:35:19 +00:00
|
|
|
bytes are copied from the source buffer to the target kernel buffer.
|
2015-01-16 13:27:52 +00:00
|
|
|
If
|
|
|
|
.I bufsz
|
|
|
|
is less than
|
|
|
|
.IR memsz ,
|
|
|
|
then the excess bytes in the kernel buffer are zeroed out.
|
|
|
|
.PP
|
|
|
|
In case of a normal kexec (i.e., the
|
|
|
|
.BR KEXEC_ON_CRASH
|
|
|
|
flag is not set), the segment data is loaded in any available memory
|
|
|
|
and is moved to the final destination at kexec reboot time (e.g., when the
|
|
|
|
.BR kexec (8)
|
|
|
|
command is executed with the
|
|
|
|
.I \-e
|
|
|
|
option).
|
|
|
|
|
|
|
|
In case of kexec on panic (i.e., the
|
|
|
|
.BR KEXEC_ON_CRASH
|
|
|
|
flag is set), the segment data is
|
|
|
|
loaded to reserved memory at the time of the call, and, after a crash,
|
|
|
|
the kexec mechanism simply passes control to that kernel.
|
2015-01-07 20:21:11 +00:00
|
|
|
|
|
|
|
The
|
|
|
|
.BR kexec_load ()
|
|
|
|
system call is available only if the kernel was configured with
|
|
|
|
.BR CONFIG_KEXEC .
|
2014-10-31 13:49:56 +00:00
|
|
|
.SS kexec_file_load()
|
|
|
|
The
|
|
|
|
.BR kexec_file_load ()
|
|
|
|
system call is similar to
|
2014-10-31 13:55:12 +00:00
|
|
|
.BR kexec_load (),
|
|
|
|
but it takes a different set of arguments.
|
2016-01-01 10:45:50 +00:00
|
|
|
It reads the kernel to be loaded from the file referred to by
|
|
|
|
the file descriptor
|
2014-10-31 13:55:12 +00:00
|
|
|
.IR kernel_fd ,
|
2014-10-31 19:18:37 +00:00
|
|
|
and the initrd (initial RAM disk)
|
2016-01-01 10:45:50 +00:00
|
|
|
to be loaded from file referred to by the file descriptor
|
2014-10-31 13:49:56 +00:00
|
|
|
.IR initrd_fd .
|
2014-11-01 11:20:37 +00:00
|
|
|
The
|
|
|
|
.IR cmdline
|
2015-01-28 07:56:12 +00:00
|
|
|
argument is a pointer to a buffer containing the command line
|
|
|
|
for the new kernel.
|
|
|
|
The
|
2014-10-31 13:49:56 +00:00
|
|
|
.IR cmdline_len
|
2015-01-28 07:56:12 +00:00
|
|
|
argument specifies size of the buffer.
|
|
|
|
The last byte in the buffer must be a null byte (\(aq\\0\(aq).
|
2014-10-31 13:49:56 +00:00
|
|
|
|
|
|
|
The
|
|
|
|
.IR flags
|
2014-10-31 13:55:12 +00:00
|
|
|
argument is a bit mask which modifies the behavior of the call.
|
|
|
|
The following values can be specified in
|
|
|
|
.IR flags :
|
2014-10-31 13:49:56 +00:00
|
|
|
.TP
|
|
|
|
.BR KEXEC_FILE_UNLOAD
|
2014-10-31 13:55:12 +00:00
|
|
|
Unload the currently loaded kernel.
|
2014-10-31 13:49:56 +00:00
|
|
|
.TP
|
|
|
|
.BR KEXEC_FILE_ON_CRASH
|
2015-01-28 07:35:19 +00:00
|
|
|
Load the new kernel in the memory region reserved for the crash kernel
|
|
|
|
(as for
|
|
|
|
.BR KEXEC_ON_CRASH).
|
2014-10-31 13:55:12 +00:00
|
|
|
This kernel is booted if the currently running kernel crashes.
|
2014-10-31 13:49:56 +00:00
|
|
|
.TP
|
|
|
|
.BR KEXEC_FILE_NO_INITRAMFS
|
2014-10-31 13:55:12 +00:00
|
|
|
Loading initrd/initramfs is optional.
|
|
|
|
Specify this flag if no initramfs is being loaded.
|
|
|
|
If this flag is set, the value passed in
|
2014-10-31 13:49:56 +00:00
|
|
|
.IR initrd_fd
|
2014-10-31 13:55:12 +00:00
|
|
|
is ignored.
|
2015-01-07 20:21:11 +00:00
|
|
|
.PP
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The
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.BR kexec_file_load ()
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.\" See also http://lwn.net/Articles/603116/
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system call was added to provide support for systems
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where "kexec" loading should be restricted to
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only kernels that are signed.
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This system call is available only if the kernel was configured with
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.BR CONFIG_KEXEC_FILE .
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2010-10-31 06:06:49 +00:00
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.SH RETURN VALUE
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2014-10-31 13:55:12 +00:00
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On success, these system calls returns 0.
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On error, \-1 is returned and
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2010-10-31 06:06:49 +00:00
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.I errno
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is set to indicate the error.
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.SH ERRORS
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.TP
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2015-01-16 13:27:52 +00:00
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.B EADDRNOTAVAIL
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.\" See kernel/kexec.::sanity_check_segment_list in the 3.19 kernel source
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The
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.B KEXEC_ON_CRASH
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flags was specified, but the region specified by the
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.I mem
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and
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.I memsz
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fields of one of the
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.I segments
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entries lies outside the range of memory reserved for the crash kernel.
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2015-01-28 07:35:19 +00:00
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.TP
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.B EADDRNOTAVAIL
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The value in a
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.I mem
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or
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.I memsz
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field in one of the
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.I segments
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entries is not a multiple of the system page size.
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2015-01-16 13:27:52 +00:00
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.TP
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2015-01-28 07:56:12 +00:00
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.B EBADF
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.I kernel_fd
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or
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.I initrd_fd
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is not a valid file descriptor.
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.TP
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2010-10-31 06:06:49 +00:00
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.B EBUSY
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Another crash kernel is already being loaded
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or a crash kernel is already in use.
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.TP
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.B EINVAL
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.I flags
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2015-01-07 20:42:42 +00:00
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is invalid.
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.TP
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.B EINVAL
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2015-01-28 07:35:19 +00:00
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The value of a
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.I bufsz
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field in one of the
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.I segments
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entries exceeds the value in the corresponding
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.I memsz
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field.
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.TP
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.B EINVAL
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2010-11-04 06:40:06 +00:00
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.IR nr_segments
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2015-01-07 20:42:42 +00:00
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exceeds
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.BR KEXEC_SEGMENT_MAX
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(16).
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2010-10-31 06:06:49 +00:00
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.TP
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2015-01-28 07:35:19 +00:00
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.B EINVAL
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Two or more of the kernel target buffers overlap.
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.TP
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2015-01-28 07:56:12 +00:00
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.B EINVAL
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The value in
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.I cmdline[cmdline_len-1]
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is not \(aq\\0\(aq.
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.TP
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.B EINVAL
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The file referred to by
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.I kernel_fd
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or
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.I initrd_fd
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is empty (length zero).
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.TP
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2014-10-31 13:55:12 +00:00
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.B ENOEXEC
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.I kernel_fd
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does not refer to an open file, or the kernel can't load this file.
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2015-01-30 15:23:45 +00:00
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Currently, the file must be a bzImage and contain an x86 kernel that
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is loadable above 4GiB in memory (see the kernel source file
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.IR Documentation/x86/boot.txt ).
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2014-10-31 13:55:12 +00:00
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.TP
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2016-08-07 17:00:37 +00:00
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.B ENOMEM
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Could not allocate memory.
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.TP
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2010-10-31 06:06:49 +00:00
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.B EPERM
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The caller does not have the
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.BR CAP_SYS_BOOT
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capability.
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2010-10-31 06:14:08 +00:00
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.SH VERSIONS
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The
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.BR kexec_load ()
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2010-11-04 06:11:11 +00:00
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system call first appeared in Linux 2.6.13.
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2014-10-31 13:57:44 +00:00
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The
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.BR kexec_file_load ()
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system call first appeared in Linux 3.17.
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2010-10-31 06:13:11 +00:00
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.SH CONFORMING TO
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2014-10-31 20:21:08 +00:00
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These system calls are Linux-specific.
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2010-10-31 05:56:47 +00:00
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.SH NOTES
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2014-10-31 13:55:12 +00:00
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Currently, there is no glibc support for these system calls.
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Call them using
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2010-10-31 06:06:49 +00:00
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.BR syscall (2).
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2010-10-31 05:56:47 +00:00
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.SH SEE ALSO
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clock_nanosleep.2, getpriority.2, kexec_load.2, nanosleep.2, nice.2, sched_setaffinity.2, timer_create.2, timer_delete.2, timer_settime.2, utime.2, btowc.3, futimes.3, log.3, pthread_attr_setguardsize.3, pthread_kill_other_threads_np.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setschedparam.3, pthread_setschedprio.3, pthread_tryjoin_np.3, strcoll.3, strcpy.3, string.3, strxfrm.3, networks.5, aio.7, sigevent.7, udplite.7: SEE ALSO: Place entries in correct order
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2010-11-01 05:34:26 +00:00
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.BR reboot (2),
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2014-11-01 06:40:28 +00:00
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.BR syscall (2),
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.BR kexec (8)
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2015-01-07 16:17:10 +00:00
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2015-01-07 16:18:32 +00:00
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The kernel source files
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.IR Documentation/kdump/kdump.txt
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and
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2017-04-20 11:22:12 +00:00
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.IR Documentation/admin-guide/kernel-parameters.txt
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