Most files that have TABs only contain a handful of them. Change them to spaces so that we don't confuse people. disas, standard-headers, linux-headers and libdecnumber are imported from other projects and probably should be exempted from the check. Outside those, after this patch the following files still contain both 8-space and TAB sequences at the beginning of the line. Many of them have a majority of TABs, or were initially committed with all tabs. bsd-user/i386/target_syscall.h bsd-user/x86_64/target_syscall.h crypto/aes.c hw/audio/fmopl.c hw/audio/fmopl.h hw/block/tc58128.c hw/display/cirrus_vga.c hw/display/xenfb.c hw/dma/etraxfs_dma.c hw/intc/sh_intc.c hw/misc/mst_fpga.c hw/net/pcnet.c hw/sh4/sh7750.c hw/timer/m48t59.c hw/timer/sh_timer.c include/crypto/aes.h include/disas/bfd.h include/hw/sh4/sh.h libdecnumber/decNumber.c linux-headers/asm-generic/unistd.h linux-headers/linux/kvm.h linux-user/alpha/target_syscall.h linux-user/arm/nwfpe/double_cpdo.c linux-user/arm/nwfpe/fpa11_cpdt.c linux-user/arm/nwfpe/fpa11_cprt.c linux-user/arm/nwfpe/fpa11.h linux-user/flat.h linux-user/flatload.c linux-user/i386/target_syscall.h linux-user/ppc/target_syscall.h linux-user/sparc/target_syscall.h linux-user/syscall.c linux-user/syscall_defs.h linux-user/x86_64/target_syscall.h slirp/cksum.c slirp/if.c slirp/ip.h slirp/ip_icmp.c slirp/ip_icmp.h slirp/ip_input.c slirp/ip_output.c slirp/mbuf.c slirp/misc.c slirp/sbuf.c slirp/socket.c slirp/socket.h slirp/tcp_input.c slirp/tcpip.h slirp/tcp_output.c slirp/tcp_subr.c slirp/tcp_timer.c slirp/tftp.c slirp/udp.c slirp/udp.h target/cris/cpu.h target/cris/mmu.c target/cris/op_helper.c target/sh4/helper.c target/sh4/op_helper.c target/sh4/translate.c tcg/sparc/tcg-target.inc.c tests/tcg/cris/check_addo.c tests/tcg/cris/check_moveq.c tests/tcg/cris/check_swap.c tests/tcg/multiarch/test-mmap.c ui/vnc-enc-hextile-template.h ui/vnc-enc-zywrle.h util/envlist.c util/readline.c The following have only TABs: bsd-user/i386/target_signal.h bsd-user/sparc64/target_signal.h bsd-user/sparc64/target_syscall.h bsd-user/sparc/target_signal.h bsd-user/sparc/target_syscall.h bsd-user/x86_64/target_signal.h crypto/desrfb.c hw/audio/intel-hda-defs.h hw/core/uboot_image.h hw/sh4/sh7750_regnames.c hw/sh4/sh7750_regs.h include/hw/cris/etraxfs_dma.h linux-user/alpha/termbits.h linux-user/arm/nwfpe/fpopcode.h linux-user/arm/nwfpe/fpsr.h linux-user/arm/syscall_nr.h linux-user/arm/target_signal.h linux-user/cris/target_signal.h linux-user/i386/target_signal.h linux-user/linux_loop.h linux-user/m68k/target_signal.h linux-user/microblaze/target_signal.h linux-user/mips64/target_signal.h linux-user/mips/target_signal.h linux-user/mips/target_syscall.h linux-user/mips/termbits.h linux-user/ppc/target_signal.h linux-user/sh4/target_signal.h linux-user/sh4/termbits.h linux-user/sparc64/target_syscall.h linux-user/sparc/target_signal.h linux-user/x86_64/target_signal.h linux-user/x86_64/termbits.h pc-bios/optionrom/optionrom.h slirp/mbuf.h slirp/misc.h slirp/sbuf.h slirp/tcp.h slirp/tcp_timer.h slirp/tcp_var.h target/i386/svm.h target/sparc/asi.h target/xtensa/core-dc232b/xtensa-modules.inc.c target/xtensa/core-dc233c/xtensa-modules.inc.c target/xtensa/core-de212/core-isa.h target/xtensa/core-de212/xtensa-modules.inc.c target/xtensa/core-fsf/xtensa-modules.inc.c target/xtensa/core-sample_controller/core-isa.h target/xtensa/core-sample_controller/xtensa-modules.inc.c target/xtensa/core-test_kc705_be/core-isa.h target/xtensa/core-test_kc705_be/xtensa-modules.inc.c tests/tcg/cris/check_abs.c tests/tcg/cris/check_addc.c tests/tcg/cris/check_addcm.c tests/tcg/cris/check_addoq.c tests/tcg/cris/check_bound.c tests/tcg/cris/check_ftag.c tests/tcg/cris/check_int64.c tests/tcg/cris/check_lz.c tests/tcg/cris/check_openpf5.c tests/tcg/cris/check_sigalrm.c tests/tcg/cris/crisutils.h tests/tcg/cris/sys.c tests/tcg/i386/test-i386-ssse3.c ui/vgafont.h Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20181213223737.11793-3-pbonzini@redhat.com> Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com> Acked-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Eric Blake <eblake@redhat.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Stefan Markovic <smarkovic@wavecomp.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
550 lines
12 KiB
C
550 lines
12 KiB
C
/*
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* QEMU low level functions
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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/* Needed early for CONFIG_BSD etc. */
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#ifdef CONFIG_SOLARIS
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#include <sys/statvfs.h>
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/* See MySQL bug #7156 (http://bugs.mysql.com/bug.php?id=7156) for
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discussion about Solaris header problems */
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extern int madvise(caddr_t, size_t, int);
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#endif
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#include "qemu-common.h"
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#include "qemu/cutils.h"
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#include "qemu/sockets.h"
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#include "qemu/error-report.h"
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#include "monitor/monitor.h"
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static bool fips_enabled = false;
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static const char *hw_version = QEMU_HW_VERSION;
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int socket_set_cork(int fd, int v)
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{
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#if defined(SOL_TCP) && defined(TCP_CORK)
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return qemu_setsockopt(fd, SOL_TCP, TCP_CORK, &v, sizeof(v));
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#else
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return 0;
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#endif
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}
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int socket_set_nodelay(int fd)
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{
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int v = 1;
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return qemu_setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &v, sizeof(v));
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}
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int qemu_madvise(void *addr, size_t len, int advice)
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{
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if (advice == QEMU_MADV_INVALID) {
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errno = EINVAL;
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return -1;
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}
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#if defined(CONFIG_MADVISE)
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return madvise(addr, len, advice);
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#elif defined(CONFIG_POSIX_MADVISE)
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return posix_madvise(addr, len, advice);
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#else
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errno = EINVAL;
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return -1;
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#endif
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}
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static int qemu_mprotect__osdep(void *addr, size_t size, int prot)
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{
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g_assert(!((uintptr_t)addr & ~qemu_real_host_page_mask));
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g_assert(!(size & ~qemu_real_host_page_mask));
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#ifdef _WIN32
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DWORD old_protect;
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if (!VirtualProtect(addr, size, prot, &old_protect)) {
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error_report("%s: VirtualProtect failed with error code %ld",
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__func__, GetLastError());
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return -1;
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}
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return 0;
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#else
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if (mprotect(addr, size, prot)) {
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error_report("%s: mprotect failed: %s", __func__, strerror(errno));
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return -1;
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}
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return 0;
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#endif
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}
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int qemu_mprotect_rwx(void *addr, size_t size)
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{
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#ifdef _WIN32
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return qemu_mprotect__osdep(addr, size, PAGE_EXECUTE_READWRITE);
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#else
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return qemu_mprotect__osdep(addr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
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#endif
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}
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int qemu_mprotect_none(void *addr, size_t size)
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{
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#ifdef _WIN32
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return qemu_mprotect__osdep(addr, size, PAGE_NOACCESS);
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#else
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return qemu_mprotect__osdep(addr, size, PROT_NONE);
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#endif
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}
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#ifndef _WIN32
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static int fcntl_op_setlk = -1;
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static int fcntl_op_getlk = -1;
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/*
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* Dups an fd and sets the flags
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*/
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static int qemu_dup_flags(int fd, int flags)
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{
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int ret;
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int serrno;
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int dup_flags;
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ret = qemu_dup(fd);
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if (ret == -1) {
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goto fail;
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}
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dup_flags = fcntl(ret, F_GETFL);
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if (dup_flags == -1) {
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goto fail;
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}
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if ((flags & O_SYNC) != (dup_flags & O_SYNC)) {
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errno = EINVAL;
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goto fail;
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}
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/* Set/unset flags that we can with fcntl */
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if (fcntl(ret, F_SETFL, flags) == -1) {
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goto fail;
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}
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/* Truncate the file in the cases that open() would truncate it */
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if (flags & O_TRUNC ||
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((flags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))) {
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if (ftruncate(ret, 0) == -1) {
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goto fail;
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}
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}
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return ret;
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fail:
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serrno = errno;
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if (ret != -1) {
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close(ret);
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}
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errno = serrno;
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return -1;
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}
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int qemu_dup(int fd)
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{
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int ret;
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#ifdef F_DUPFD_CLOEXEC
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ret = fcntl(fd, F_DUPFD_CLOEXEC, 0);
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#else
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ret = dup(fd);
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if (ret != -1) {
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qemu_set_cloexec(ret);
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}
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#endif
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return ret;
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}
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static int qemu_parse_fdset(const char *param)
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{
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return qemu_parse_fd(param);
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}
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static void qemu_probe_lock_ops(void)
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{
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if (fcntl_op_setlk == -1) {
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#ifdef F_OFD_SETLK
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int fd;
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int ret;
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struct flock fl = {
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.l_whence = SEEK_SET,
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.l_start = 0,
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.l_len = 0,
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.l_type = F_WRLCK,
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};
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fd = open("/dev/null", O_RDWR);
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if (fd < 0) {
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fprintf(stderr,
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"Failed to open /dev/null for OFD lock probing: %s\n",
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strerror(errno));
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fcntl_op_setlk = F_SETLK;
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fcntl_op_getlk = F_GETLK;
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return;
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}
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ret = fcntl(fd, F_OFD_GETLK, &fl);
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close(fd);
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if (!ret) {
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fcntl_op_setlk = F_OFD_SETLK;
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fcntl_op_getlk = F_OFD_GETLK;
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} else {
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fcntl_op_setlk = F_SETLK;
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fcntl_op_getlk = F_GETLK;
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}
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#else
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fcntl_op_setlk = F_SETLK;
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fcntl_op_getlk = F_GETLK;
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#endif
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}
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}
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bool qemu_has_ofd_lock(void)
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{
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qemu_probe_lock_ops();
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#ifdef F_OFD_SETLK
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return fcntl_op_setlk == F_OFD_SETLK;
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#else
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return false;
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#endif
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}
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static int qemu_lock_fcntl(int fd, int64_t start, int64_t len, int fl_type)
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{
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int ret;
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struct flock fl = {
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.l_whence = SEEK_SET,
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.l_start = start,
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.l_len = len,
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.l_type = fl_type,
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};
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qemu_probe_lock_ops();
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do {
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ret = fcntl(fd, fcntl_op_setlk, &fl);
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} while (ret == -1 && errno == EINTR);
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return ret == -1 ? -errno : 0;
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}
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int qemu_lock_fd(int fd, int64_t start, int64_t len, bool exclusive)
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{
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return qemu_lock_fcntl(fd, start, len, exclusive ? F_WRLCK : F_RDLCK);
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}
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int qemu_unlock_fd(int fd, int64_t start, int64_t len)
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{
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return qemu_lock_fcntl(fd, start, len, F_UNLCK);
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}
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int qemu_lock_fd_test(int fd, int64_t start, int64_t len, bool exclusive)
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{
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int ret;
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struct flock fl = {
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.l_whence = SEEK_SET,
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.l_start = start,
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.l_len = len,
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.l_type = exclusive ? F_WRLCK : F_RDLCK,
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};
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qemu_probe_lock_ops();
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ret = fcntl(fd, fcntl_op_getlk, &fl);
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if (ret == -1) {
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return -errno;
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} else {
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return fl.l_type == F_UNLCK ? 0 : -EAGAIN;
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}
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}
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#endif
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/*
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* Opens a file with FD_CLOEXEC set
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*/
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int qemu_open(const char *name, int flags, ...)
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{
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int ret;
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int mode = 0;
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#ifndef _WIN32
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const char *fdset_id_str;
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/* Attempt dup of fd from fd set */
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if (strstart(name, "/dev/fdset/", &fdset_id_str)) {
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int64_t fdset_id;
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int fd, dupfd;
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fdset_id = qemu_parse_fdset(fdset_id_str);
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if (fdset_id == -1) {
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errno = EINVAL;
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return -1;
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}
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fd = monitor_fdset_get_fd(fdset_id, flags);
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if (fd < 0) {
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errno = -fd;
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return -1;
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}
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dupfd = qemu_dup_flags(fd, flags);
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if (dupfd == -1) {
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return -1;
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}
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ret = monitor_fdset_dup_fd_add(fdset_id, dupfd);
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if (ret == -1) {
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close(dupfd);
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errno = EINVAL;
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return -1;
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}
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return dupfd;
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}
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#endif
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if (flags & O_CREAT) {
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va_list ap;
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va_start(ap, flags);
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mode = va_arg(ap, int);
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va_end(ap);
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}
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#ifdef O_CLOEXEC
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ret = open(name, flags | O_CLOEXEC, mode);
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#else
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ret = open(name, flags, mode);
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if (ret >= 0) {
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qemu_set_cloexec(ret);
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}
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#endif
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#ifdef O_DIRECT
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if (ret == -1 && errno == EINVAL && (flags & O_DIRECT)) {
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error_report("file system may not support O_DIRECT");
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errno = EINVAL; /* in case it was clobbered */
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}
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#endif /* O_DIRECT */
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return ret;
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}
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int qemu_close(int fd)
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{
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int64_t fdset_id;
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/* Close fd that was dup'd from an fdset */
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fdset_id = monitor_fdset_dup_fd_find(fd);
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if (fdset_id != -1) {
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int ret;
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ret = close(fd);
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if (ret == 0) {
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monitor_fdset_dup_fd_remove(fd);
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}
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return ret;
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}
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return close(fd);
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}
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/*
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* A variant of write(2) which handles partial write.
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*
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* Return the number of bytes transferred.
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* Set errno if fewer than `count' bytes are written.
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*
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* This function don't work with non-blocking fd's.
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* Any of the possibilities with non-bloking fd's is bad:
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* - return a short write (then name is wrong)
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* - busy wait adding (errno == EAGAIN) to the loop
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*/
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ssize_t qemu_write_full(int fd, const void *buf, size_t count)
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{
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ssize_t ret = 0;
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ssize_t total = 0;
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while (count) {
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ret = write(fd, buf, count);
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if (ret < 0) {
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if (errno == EINTR)
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continue;
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break;
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}
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count -= ret;
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buf += ret;
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total += ret;
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}
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return total;
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}
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/*
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* Opens a socket with FD_CLOEXEC set
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*/
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int qemu_socket(int domain, int type, int protocol)
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{
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int ret;
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#ifdef SOCK_CLOEXEC
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ret = socket(domain, type | SOCK_CLOEXEC, protocol);
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if (ret != -1 || errno != EINVAL) {
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return ret;
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}
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#endif
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ret = socket(domain, type, protocol);
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if (ret >= 0) {
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qemu_set_cloexec(ret);
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}
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return ret;
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}
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/*
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* Accept a connection and set FD_CLOEXEC
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*/
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int qemu_accept(int s, struct sockaddr *addr, socklen_t *addrlen)
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{
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|
int ret;
|
|
|
|
#ifdef CONFIG_ACCEPT4
|
|
ret = accept4(s, addr, addrlen, SOCK_CLOEXEC);
|
|
if (ret != -1 || errno != ENOSYS) {
|
|
return ret;
|
|
}
|
|
#endif
|
|
ret = accept(s, addr, addrlen);
|
|
if (ret >= 0) {
|
|
qemu_set_cloexec(ret);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void qemu_set_hw_version(const char *version)
|
|
{
|
|
hw_version = version;
|
|
}
|
|
|
|
const char *qemu_hw_version(void)
|
|
{
|
|
return hw_version;
|
|
}
|
|
|
|
void fips_set_state(bool requested)
|
|
{
|
|
#ifdef __linux__
|
|
if (requested) {
|
|
FILE *fds = fopen("/proc/sys/crypto/fips_enabled", "r");
|
|
if (fds != NULL) {
|
|
fips_enabled = (fgetc(fds) == '1');
|
|
fclose(fds);
|
|
}
|
|
}
|
|
#else
|
|
fips_enabled = false;
|
|
#endif /* __linux__ */
|
|
|
|
#ifdef _FIPS_DEBUG
|
|
fprintf(stderr, "FIPS mode %s (requested %s)\n",
|
|
(fips_enabled ? "enabled" : "disabled"),
|
|
(requested ? "enabled" : "disabled"));
|
|
#endif
|
|
}
|
|
|
|
bool fips_get_state(void)
|
|
{
|
|
return fips_enabled;
|
|
}
|
|
|
|
#ifdef _WIN32
|
|
static void socket_cleanup(void)
|
|
{
|
|
WSACleanup();
|
|
}
|
|
#endif
|
|
|
|
int socket_init(void)
|
|
{
|
|
#ifdef _WIN32
|
|
WSADATA Data;
|
|
int ret, err;
|
|
|
|
ret = WSAStartup(MAKEWORD(2, 2), &Data);
|
|
if (ret != 0) {
|
|
err = WSAGetLastError();
|
|
fprintf(stderr, "WSAStartup: %d\n", err);
|
|
return -1;
|
|
}
|
|
atexit(socket_cleanup);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
|
|
#ifndef CONFIG_IOVEC
|
|
/* helper function for iov_send_recv() */
|
|
static ssize_t
|
|
readv_writev(int fd, const struct iovec *iov, int iov_cnt, bool do_write)
|
|
{
|
|
unsigned i = 0;
|
|
ssize_t ret = 0;
|
|
while (i < iov_cnt) {
|
|
ssize_t r = do_write
|
|
? write(fd, iov[i].iov_base, iov[i].iov_len)
|
|
: read(fd, iov[i].iov_base, iov[i].iov_len);
|
|
if (r > 0) {
|
|
ret += r;
|
|
} else if (!r) {
|
|
break;
|
|
} else if (errno == EINTR) {
|
|
continue;
|
|
} else {
|
|
/* else it is some "other" error,
|
|
* only return if there was no data processed. */
|
|
if (ret == 0) {
|
|
ret = -1;
|
|
}
|
|
break;
|
|
}
|
|
i++;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
ssize_t
|
|
readv(int fd, const struct iovec *iov, int iov_cnt)
|
|
{
|
|
return readv_writev(fd, iov, iov_cnt, false);
|
|
}
|
|
|
|
ssize_t
|
|
writev(int fd, const struct iovec *iov, int iov_cnt)
|
|
{
|
|
return readv_writev(fd, iov, iov_cnt, true);
|
|
}
|
|
#endif
|